generic-library/webp
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Initial commit

Browse Source 
Change-Id: I4712afb3912625e7aaccfa5160dcf78ee252f159
This commit is contained in:
Pascal Massimino 2010-09-30 09:34:38 -04:00
commit c3f41cb47e
41 changed files with 46181 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
AUTHORS Normal file
View File

@ -0,0 +1,3 @@
Main stuff:
- Pascal Massimino (pascal.massimino@gmail.com)

22
Android.mk Normal file
View File

@ -0,0 +1,22 @@
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
src/bits.c \
src/dsp.c \
src/frame.c \
src/quant.c \
src/tree.c \
src/vp8.c \
src/webp.c \
src/yuv.c
LOCAL_CFLAGS := -Wall -DANDROID -DHAVE_MALLOC_H -DHAVE_PTHREAD \
-finline-functions -frename-registers -ffast-math \
-s -fomit-frame-pointer -std=gnu99
LOCAL_C_INCLUDES += $(LOCAL_PATH)/src
LOCAL_MODULE:= webp-decode
include $(BUILD_STATIC_LIBRARY)

30
COPYING Normal file
View File

@ -0,0 +1,30 @@
Copyright (c) 2010, Google Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Google nor the names of its contributors may
be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

1
ChangeLog Normal file
View File

@ -0,0 +1 @@
- 9/10: initial release version 0.1

237
INSTALL Normal file
View File

@ -0,0 +1,237 @@
Installation Instructions
*************************
Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
2006, 2007 Free Software Foundation, Inc.
This file is free documentation; the Free Software Foundation gives
unlimited permission to copy, distribute and modify it.
Basic Installation
==================
Briefly, the shell commands `./configure; make; make install' should
configure, build, and install this package. The following
more-detailed instructions are generic; see the `README' file for
instructions specific to this package.
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, and a
file `config.log' containing compiler output (useful mainly for
debugging `configure').
It can also use an optional file (typically called `config.cache'
and enabled with `--cache-file=config.cache' or simply `-C') that saves
the results of its tests to speed up reconfiguring. Caching is
disabled by default to prevent problems with accidental use of stale
cache files.
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release. If you are using the cache, and at
some point `config.cache' contains results you don't want to keep, you
may remove or edit it.
The file `configure.ac' (or `configure.in') is used to create
`configure' by a program called `autoconf'. You need `configure.ac' if
you want to change it or regenerate `configure' using a newer version
of `autoconf'.
The simplest way to compile this package is:
1. `cd' to the directory containing the package's source code and type
`./configure' to configure the package for your system.
Running `configure' might take a while. While running, it prints
some messages telling which features it is checking for.
2. Type `make' to compile the package.
3. Optionally, type `make check' to run any self-tests that come with
the package.
4. Type `make install' to install the programs and any data files and
documentation.
5. You can remove the program binaries and object files from the
source code directory by typing `make clean'. To also remove the
files that `configure' created (so you can compile the package for
a different kind of computer), type `make distclean'. There is
also a `make maintainer-clean' target, but that is intended mainly
for the package's developers. If you use it, you may have to get
all sorts of other programs in order to regenerate files that came
with the distribution.
6. Often, you can also type `make uninstall' to remove the installed
files again.
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that the
`configure' script does not know about. Run `./configure --help' for
details on some of the pertinent environment variables.
You can give `configure' initial values for configuration parameters
by setting variables in the command line or in the environment. Here
is an example:
./configure CC=c99 CFLAGS=-g LIBS=-lposix
*Note Defining Variables::, for more details.
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you can use GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
With a non-GNU `make', it is safer to compile the package for one
architecture at a time in the source code directory. After you have
installed the package for one architecture, use `make distclean' before
reconfiguring for another architecture.
Installation Names
==================
By default, `make install' installs the package's commands under
`/usr/local/bin', include files under `/usr/local/include', etc. You
can specify an installation prefix other than `/usr/local' by giving
`configure' the option `--prefix=PREFIX'.
You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you
pass the option `--exec-prefix=PREFIX' to `configure', the package uses
PREFIX as the prefix for installing programs and libraries.
Documentation and other data files still use the regular prefix.
In addition, if you use an unusual directory layout you can give
options like `--bindir=DIR' to specify different values for particular
kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.
If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Optional Features
=================
Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System). The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.
For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.
Specifying the System Type
==========================
There may be some features `configure' cannot figure out automatically,
but needs to determine by the type of machine the package will run on.
Usually, assuming the package is built to be run on the _same_
architectures, `configure' can figure that out, but if it prints a
message saying it cannot guess the machine type, give it the
`--build=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name which has the form:
CPU-COMPANY-SYSTEM
where SYSTEM can have one of these forms:
OS KERNEL-OS
See the file `config.sub' for the possible values of each field. If
`config.sub' isn't included in this package, then this package doesn't
need to know the machine type.
If you are _building_ compiler tools for cross-compiling, you should
use the option `--target=TYPE' to select the type of system they will
produce code for.
If you want to _use_ a cross compiler, that generates code for a
platform different from the build platform, you should specify the
"host" platform (i.e., that on which the generated programs will
eventually be run) with `--host=TYPE'.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share, you
can create a site shell script called `config.site' that gives default
values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Defining Variables
==================
Variables not defined in a site shell script can be set in the
environment passed to `configure'. However, some packages may run
configure again during the build, and the customized values of these
variables may be lost. In order to avoid this problem, you should set
them in the `configure' command line, using `VAR=value'. For example:
./configure CC=/usr/local2/bin/gcc
causes the specified `gcc' to be used as the C compiler (unless it is
overridden in the site shell script).
Unfortunately, this technique does not work for `CONFIG_SHELL' due to
an Autoconf bug. Until the bug is fixed you can use this workaround:
CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
`configure' Invocation
======================
`configure' recognizes the following options to control how it operates.
`--help'
`-h'
Print a summary of the options to `configure', and exit.
`--version'
`-V'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE,
traditionally `config.cache'. FILE defaults to `/dev/null' to
disable caching.
`--config-cache'
`-C'
Alias for `--cache-file=config.cache'.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`configure' also accepts some other, not widely useful, options. Run
`configure --help' for more details.

2
Makefile.am Normal file
View File

@ -0,0 +1,2 @@
SUBDIRS = src examples
EXTRA_DIST = COPYING autogen.sh

633
Makefile.in Normal file
View File

@ -0,0 +1,633 @@
# Makefile.in generated by automake 1.10.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
subdir = .
DIST_COMMON = README $(am__configure_deps) $(srcdir)/Makefile.am \
$(srcdir)/Makefile.in $(srcdir)/config.h.in \
$(top_srcdir)/configure AUTHORS COPYING ChangeLog INSTALL NEWS \
config.guess config.sub depcomp install-sh ltmain.sh missing
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.ac
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
configure.lineno config.status.lineno
mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = config.h
CONFIG_CLEAN_FILES =
SOURCES =
DIST_SOURCES =
RECURSIVE_TARGETS = all-recursive check-recursive dvi-recursive \
html-recursive info-recursive install-data-recursive \
install-dvi-recursive install-exec-recursive \
install-html-recursive install-info-recursive \
install-pdf-recursive install-ps-recursive install-recursive \
installcheck-recursive installdirs-recursive pdf-recursive \
ps-recursive uninstall-recursive
RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive \
distclean-recursive maintainer-clean-recursive
ETAGS = etags
CTAGS = ctags
DIST_SUBDIRS = $(SUBDIRS)
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
distdir = $(PACKAGE)-$(VERSION)
top_distdir = $(distdir)
am__remove_distdir = \
{ test ! -d $(distdir) \
|| { find $(distdir) -type d ! -perm -200 -exec chmod u+w {} ';' \
&& rm -fr $(distdir); }; }
DIST_ARCHIVES = $(distdir).tar.gz
GZIP_ENV = --best
distuninstallcheck_listfiles = find . -type f -print
distcleancheck_listfiles = find . -type f -print
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AR = @AR@
AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CXX = @CXX@
CXXCPP = @CXXCPP@
CXXDEPMODE = @CXXDEPMODE@
CXXFLAGS = @CXXFLAGS@
CYGPATH_W = @CYGPATH_W@
DEFS = @DEFS@
DEPDIR = @DEPDIR@
DSYMUTIL = @DSYMUTIL@
ECHO = @ECHO@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
F77 = @F77@
FFLAGS = @FFLAGS@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
LTLIBOBJS = @LTLIBOBJS@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
NMEDIT = @NMEDIT@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
ac_ct_CXX = @ac_ct_CXX@
ac_ct_F77 = @ac_ct_F77@
am__include = @am__include@
am__leading_dot = @am__leading_dot@
am__quote = @am__quote@
am__tar = @am__tar@
am__untar = @am__untar@
bindir = @bindir@
build = @build@
build_alias = @build_alias@
build_cpu = @build_cpu@
build_os = @build_os@
build_vendor = @build_vendor@
builddir = @builddir@
datadir = @datadir@
datarootdir = @datarootdir@
docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
host = @host@
host_alias = @host_alias@
host_cpu = @host_cpu@
host_os = @host_os@
host_vendor = @host_vendor@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
sharedstatedir = @sharedstatedir@
srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
SUBDIRS = src examples
EXTRA_DIST = COPYING autogen.sh
all: config.h
$(MAKE) $(AM_MAKEFLAGS) all-recursive
.SUFFIXES:
am--refresh:
@:
$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
@for dep in $?; do \
case '$(am__configure_deps)' in \
*$$dep*) \
echo ' cd $(srcdir) && $(AUTOMAKE) --gnu '; \
cd $(srcdir) && $(AUTOMAKE) --gnu \
&& exit 0; \
exit 1;; \
esac; \
done; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu Makefile'; \
cd $(top_srcdir) && \
$(AUTOMAKE) --gnu Makefile
.PRECIOUS: Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
*config.status*) \
echo ' $(SHELL) ./config.status'; \
$(SHELL) ./config.status;; \
*) \
echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
esac;
$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
$(SHELL) ./config.status --recheck
$(top_srcdir)/configure: $(am__configure_deps)
cd $(srcdir) && $(AUTOCONF)
$(ACLOCAL_M4): $(am__aclocal_m4_deps)
cd $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
config.h: stamp-h1
@if test ! -f $@; then \
rm -f stamp-h1; \
$(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
else :; fi
stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
@rm -f stamp-h1
cd $(top_builddir) && $(SHELL) ./config.status config.h
$(srcdir)/config.h.in: $(am__configure_deps)
cd $(top_srcdir) && $(AUTOHEADER)
rm -f stamp-h1
touch $@
distclean-hdr:
-rm -f config.h stamp-h1
mostlyclean-libtool:
-rm -f *.lo
clean-libtool:
-rm -rf .libs _libs
distclean-libtool:
-rm -f libtool
# This directory's subdirectories are mostly independent; you can cd
# into them and run `make' without going through this Makefile.
# To change the values of `make' variables: instead of editing Makefiles,
# (1) if the variable is set in `config.status', edit `config.status'
# (which will cause the Makefiles to be regenerated when you run `make');
# (2) otherwise, pass the desired values on the `make' command line.
$(RECURSIVE_TARGETS):
@failcom='exit 1'; \
for f in x $$MAKEFLAGS; do \
case $$f in \
*=* | --[!k]*);; \
*k*) failcom='fail=yes';; \
esac; \
done; \
dot_seen=no; \
target=`echo $@ | sed s/-recursive//`; \
list='$(SUBDIRS)'; for subdir in $$list; do \
echo "Making $$target in $$subdir"; \
if test "$$subdir" = "."; then \
dot_seen=yes; \
local_target="$$target-am"; \
else \
local_target="$$target"; \
fi; \
(cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
|| eval $$failcom; \
done; \
if test "$$dot_seen" = "no"; then \
$(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
fi; test -z "$$fail"
$(RECURSIVE_CLEAN_TARGETS):
@failcom='exit 1'; \
for f in x $$MAKEFLAGS; do \
case $$f in \
*=* | --[!k]*);; \
*k*) failcom='fail=yes';; \
esac; \
done; \
dot_seen=no; \
case "$@" in \
distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
*) list='$(SUBDIRS)' ;; \
esac; \
rev=''; for subdir in $$list; do \
if test "$$subdir" = "."; then :; else \
rev="$$subdir $$rev"; \
fi; \
done; \
rev="$$rev ."; \
target=`echo $@ | sed s/-recursive//`; \
for subdir in $$rev; do \
echo "Making $$target in $$subdir"; \
if test "$$subdir" = "."; then \
local_target="$$target-am"; \
else \
local_target="$$target"; \
fi; \
(cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
|| eval $$failcom; \
done && test -z "$$fail"
tags-recursive:
list='$(SUBDIRS)'; for subdir in $$list; do \
test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) tags); \
done
ctags-recursive:
list='$(SUBDIRS)'; for subdir in $$list; do \
test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) ctags); \
done
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
mkid -fID $$unique
tags: TAGS
TAGS: tags-recursive $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
here=`pwd`; \
if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
include_option=--etags-include; \
empty_fix=.; \
else \
include_option=--include; \
empty_fix=; \
fi; \
list='$(SUBDIRS)'; for subdir in $$list; do \
if test "$$subdir" = .; then :; else \
test ! -f $$subdir/TAGS || \
tags="$$tags $$include_option=$$here/$$subdir/TAGS"; \
fi; \
done; \
list='$(SOURCES) $(HEADERS) config.h.in $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
test -n "$$unique" || unique=$$empty_fix; \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
$$tags $$unique; \
fi
ctags: CTAGS
CTAGS: ctags-recursive $(HEADERS) $(SOURCES) config.h.in $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
list='$(SOURCES) $(HEADERS) config.h.in $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
test -z "$(CTAGS_ARGS)$$tags$$unique" \
|| $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
$$tags $$unique
GTAGS:
here=`$(am__cd) $(top_builddir) && pwd` \
&& cd $(top_srcdir) \
&& gtags -i $(GTAGS_ARGS) $$here
distclean-tags:
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
distdir: $(DISTFILES)
$(am__remove_distdir)
test -d $(distdir) || mkdir $(distdir)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
esac; \
for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
fi; \
cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
else \
test -f $(distdir)/$$file \
|| cp -p $$d/$$file $(distdir)/$$file \
|| exit 1; \
fi; \
done
list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
if test "$$subdir" = .; then :; else \
test -d "$(distdir)/$$subdir" \
|| $(MKDIR_P) "$(distdir)/$$subdir" \
|| exit 1; \
distdir=`$(am__cd) $(distdir) && pwd`; \
top_distdir=`$(am__cd) $(top_distdir) && pwd`; \
(cd $$subdir && \
$(MAKE) $(AM_MAKEFLAGS) \
top_distdir="$$top_distdir" \
distdir="$$distdir/$$subdir" \
am__remove_distdir=: \
am__skip_length_check=: \
distdir) \
|| exit 1; \
fi; \
done
-find $(distdir) -type d ! -perm -777 -exec chmod a+rwx {} \; -o \
! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
! -type d ! -perm -400 -exec chmod a+r {} \; -o \
! -type d ! -perm -444 -exec $(install_sh) -c -m a+r {} {} \; \
|| chmod -R a+r $(distdir)
dist-gzip: distdir
tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
$(am__remove_distdir)
dist-bzip2: distdir
tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
$(am__remove_distdir)
dist-lzma: distdir
tardir=$(distdir) && $(am__tar) | lzma -9 -c >$(distdir).tar.lzma
$(am__remove_distdir)
dist-tarZ: distdir
tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
$(am__remove_distdir)
dist-shar: distdir
shar $(distdir) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).shar.gz
$(am__remove_distdir)
dist-zip: distdir
-rm -f $(distdir).zip
zip -rq $(distdir).zip $(distdir)
$(am__remove_distdir)
dist dist-all: distdir
tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
$(am__remove_distdir)
# This target untars the dist file and tries a VPATH configuration. Then
# it guarantees that the distribution is self-contained by making another
# tarfile.
distcheck: dist
case '$(DIST_ARCHIVES)' in \
*.tar.gz*) \
GZIP=$(GZIP_ENV) gunzip -c $(distdir).tar.gz | $(am__untar) ;;\
*.tar.bz2*) \
bunzip2 -c $(distdir).tar.bz2 | $(am__untar) ;;\
*.tar.lzma*) \
unlzma -c $(distdir).tar.lzma | $(am__untar) ;;\
*.tar.Z*) \
uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
*.shar.gz*) \
GZIP=$(GZIP_ENV) gunzip -c $(distdir).shar.gz | unshar ;;\
*.zip*) \
unzip $(distdir).zip ;;\
esac
chmod -R a-w $(distdir); chmod a+w $(distdir)
mkdir $(distdir)/_build
mkdir $(distdir)/_inst
chmod a-w $(distdir)
dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
&& dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
&& cd $(distdir)/_build \
&& ../configure --srcdir=.. --prefix="$$dc_install_base" \
$(DISTCHECK_CONFIGURE_FLAGS) \
&& $(MAKE) $(AM_MAKEFLAGS) \
&& $(MAKE) $(AM_MAKEFLAGS) dvi \
&& $(MAKE) $(AM_MAKEFLAGS) check \
&& $(MAKE) $(AM_MAKEFLAGS) install \
&& $(MAKE) $(AM_MAKEFLAGS) installcheck \
&& $(MAKE) $(AM_MAKEFLAGS) uninstall \
&& $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
distuninstallcheck \
&& chmod -R a-w "$$dc_install_base" \
&& ({ \
(cd ../.. && umask 077 && mkdir "$$dc_destdir") \
&& $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
&& $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
&& $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
} || { rm -rf "$$dc_destdir"; exit 1; }) \
&& rm -rf "$$dc_destdir" \
&& $(MAKE) $(AM_MAKEFLAGS) dist \
&& rm -rf $(DIST_ARCHIVES) \
&& $(MAKE) $(AM_MAKEFLAGS) distcleancheck
$(am__remove_distdir)
@(echo "$(distdir) archives ready for distribution: "; \
list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
distuninstallcheck:
@cd $(distuninstallcheck_dir) \
&& test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
|| { echo "ERROR: files left after uninstall:" ; \
if test -n "$(DESTDIR)"; then \
echo " (check DESTDIR support)"; \
fi ; \
$(distuninstallcheck_listfiles) ; \
exit 1; } >&2
distcleancheck: distclean
@if test '$(srcdir)' = . ; then \
echo "ERROR: distcleancheck can only run from a VPATH build" ; \
exit 1 ; \
fi
@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
|| { echo "ERROR: files left in build directory after distclean:" ; \
$(distcleancheck_listfiles) ; \
exit 1; } >&2
check-am: all-am
check: check-recursive
all-am: Makefile config.h
installdirs: installdirs-recursive
installdirs-am:
install: install-recursive
install-exec: install-exec-recursive
install-data: install-data-recursive
uninstall: uninstall-recursive
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-recursive
install-strip:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-recursive
clean-am: clean-generic clean-libtool mostlyclean-am
distclean: distclean-recursive
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -f Makefile
distclean-am: clean-am distclean-generic distclean-hdr \
distclean-libtool distclean-tags
dvi: dvi-recursive
dvi-am:
html: html-recursive
info: info-recursive
info-am:
install-data-am:
install-dvi: install-dvi-recursive
install-exec-am:
install-html: install-html-recursive
install-info: install-info-recursive
install-man:
install-pdf: install-pdf-recursive
install-ps: install-ps-recursive
installcheck-am:
maintainer-clean: maintainer-clean-recursive
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -rf $(top_srcdir)/autom4te.cache
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-recursive
mostlyclean-am: mostlyclean-generic mostlyclean-libtool
pdf: pdf-recursive
pdf-am:
ps: ps-recursive
ps-am:
uninstall-am:
.MAKE: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) install-am \
install-strip
.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
all all-am am--refresh check check-am clean clean-generic \
clean-libtool ctags ctags-recursive dist dist-all dist-bzip2 \
dist-gzip dist-lzma dist-shar dist-tarZ dist-zip distcheck \
distclean distclean-generic distclean-hdr distclean-libtool \
distclean-tags distcleancheck distdir distuninstallcheck dvi \
dvi-am html html-am info info-am install install-am \
install-data install-data-am install-dvi install-dvi-am \
install-exec install-exec-am install-html install-html-am \
install-info install-info-am install-man install-pdf \
install-pdf-am install-ps install-ps-am install-strip \
installcheck installcheck-am installdirs installdirs-am \
maintainer-clean maintainer-clean-generic mostlyclean \
mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
tags tags-recursive uninstall uninstall-am
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

1
NEWS Normal file
View File

@ -0,0 +1 @@
- 9/10: initial release version 0.1

22
PATENTS Normal file
View File

@ -0,0 +1,22 @@
Additional IP Rights Grant (Patents)
"This implementation" means the copyrightable works distributed by
Google as part of the WebM Project.
Google hereby grants to you a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this section)
patent license to make, have made, use, offer to sell, sell, import,
transfer, and otherwise run, modify and propagate the contents of this
implementation of VP8, where such license applies only to those patent
claims, both currently owned by Google and acquired in the future,
licensable by Google that are necessarily infringed by this
implementation of VP8. This grant does not include claims that would be
infringed only as a consequence of further modification of this
implementation. If you or your agent or exclusive licensee institute or
order or agree to the institution of patent litigation against any
entity (including a cross-claim or counterclaim in a lawsuit) alleging
that this implementation of VP8 or any code incorporated within this
implementation of VP8 constitutes direct or contributory patent
infringement, or inducement of patent infringement, then any patent
rights granted to you under this License for this implementation of VP8
shall terminate as of the date such litigation is filed.

74
README Normal file
View File

@ -0,0 +1,74 @@
__ __ ____ ____ ____
/ \\/ \/ _ \/ _ )/ _ \
\ / __/ _ \ __/
\__\__/\____/\_____/__/ _________ ____ ____
\ \ / _ \/ _/ / \ \ / _ \ _ \
/ \ \ __/ \_/ / / \ \ __/ /_
\_____/_____/____/____/\_____/_____/_/\__/v0.1
Description:
============
WEBP decoder: libwebpdecode.so is a simple library for
decoding WEBP image files.
See http://code.google.com/speed/webp
It is released under the same license as the WebM project.
See http://www.webmproject.org/license/software/ or the
file "COPYING" file for details. An additional intellectual
property rights grant can be found in the file PATENTS.
API:
====
This is mainly just one function to call, so just have a look at
the file src/webp/decode.h for the details and variants:
#include "webp/decode.h"
uint8_t* WebPDecodeRGB(const uint8_t* data, uint32_t data_size,
int *width, int *height);
A lower-level API is available from the header file <webp/decode_vp8.h>
Building:
=========
If everything goes right, then:
./configure
make
make install
should be all you need to have the following files
/usr/local/include/webp/decode.h
/usr/local/include/webp/decode_vp8.h
/usr/local/lib/libwebpdecode.*
installed.
Decoding example:
=================
there's a decoding example in example/dwebp.c which will take a .webp file and
decode it to a PPM image file. This is simply to demonstrate use of the API.
You can verify the file test.webp decodes to exactly the same as test_ref.ppm:
`cd examples && ./dwebp test.webp -o test.ppm && diff test.ppm test_ref.ppm`
Bugs:
=====
Please report all bugs to our issue tracker:
http://code.google.com/p/webp/issues
Patches welcome! See this page to get started:
http://www.webmproject.org/code/contribute/submitting-patches/
Discuss:
========
Email: webp-discuss@webmproject.org

7520
aclocal.m4 vendored Normal file
View File

File diff suppressed because it is too large Load Diff

5
autogen.sh Executable file
View File

@ -0,0 +1,5 @@
#! /bin/sh -e
aclocal
automake
autoconf
./configure "$@"

1516
config.guess vendored Executable file
View File

File diff suppressed because it is too large Load Diff

55
config.h.in Normal file
View File

@ -0,0 +1,55 @@
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION

1626
config.sub vendored Executable file
View File

File diff suppressed because it is too large Load Diff

21348
configure vendored Executable file
View File

File diff suppressed because it is too large Load Diff

7
configure.ac Normal file
View File

@ -0,0 +1,7 @@
AC_INIT([webpdecode], [0.1])
AM_INIT_AUTOMAKE
AC_PROG_LIBTOOL
AC_PROG_CC_C99
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([Makefile examples/Makefile src/Makefile])
AC_OUTPUT

589
depcomp Executable file
View File

@ -0,0 +1,589 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2007-03-29.01
# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007 Free Software
# Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try \`$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by `PROGRAMS ARGS'.
object Object file output by `PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputing dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say).
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
## The second -e expression handles DOS-style file names with drive letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the `deleted header file' problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
tr ' ' '
' < "$tmpdepfile" |
## Some versions of gcc put a space before the `:'. On the theory
## that the space means something, we add a space to the output as
## well.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like `#:fec' to the end of the
# dependency line.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
tr '
' ' ' >> $depfile
echo >> $depfile
# The second pass generates a dummy entry for each header file.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> $depfile
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts `$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.u
tmpdepfile2=$base.u
tmpdepfile3=$dir.libs/$base.u
"$@" -Wc,-M
else
tmpdepfile1=$dir$base.u
tmpdepfile2=$dir$base.u
tmpdepfile3=$dir$base.u
"$@" -M
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
# Each line is of the form `foo.o: dependent.h'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
# That's a tab and a space in the [].
sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
icc)
# Intel's C compiler understands `-MD -MF file'. However on
# icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
# ICC 7.0 will fill foo.d with something like
# foo.o: sub/foo.c
# foo.o: sub/foo.h
# which is wrong. We want:
# sub/foo.o: sub/foo.c
# sub/foo.o: sub/foo.h
# sub/foo.c:
# sub/foo.h:
# ICC 7.1 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using \ :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
# Add `dependent.h:' lines.
sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile"
else
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in `foo.d' instead, so we check for that too.
# Subdirectories are respected.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
# With Tru64 cc, shared objects can also be used to make a
# static library. This mechanism is used in libtool 1.4 series to
# handle both shared and static libraries in a single compilation.
# With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
#
# With libtool 1.5 this exception was removed, and libtool now
# generates 2 separate objects for the 2 libraries. These two
# compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
tmpdepfile2=$dir$base.o.d # libtool 1.5
tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.o.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
tmpdepfile4=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
# That's a tab and a space in the [].
sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
else
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for `:'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
"$@" $dashmflag |
sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
tr ' ' '
' < "$tmpdepfile" | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no
for arg in "$@"; do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix="`echo $object | sed 's/^.*\././'`"
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
sed '1,2d' "$tmpdepfile" | tr ' ' '
' | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E |
sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o,
# because we must use -o when running libtool.
"$@" || exit $?
IFS=" "
for arg
do
case "$arg" in
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
echo " " >> "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

4
examples/Makefile.am Normal file
View File

@ -0,0 +1,4 @@
AM_CPPFLAGS = -I$(top_srcdir)/src
dwebp_SOURCES = dwebp.c
dwebp_LDADD = ../src/libwebpdecode.la
noinst_PROGRAMS = dwebp

433
examples/Makefile.in Normal file
View File

@ -0,0 +1,433 @@
# Makefile.in generated by automake 1.10.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
noinst_PROGRAMS = dwebp$(EXEEXT)
subdir = examples
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.ac
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES =
PROGRAMS = $(noinst_PROGRAMS)
am_dwebp_OBJECTS = dwebp.$(OBJEXT)
dwebp_OBJECTS = $(am_dwebp_OBJECTS)
dwebp_DEPENDENCIES = ../src/libwebpdecode.la
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
--mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
$(LDFLAGS) -o $@
SOURCES = $(dwebp_SOURCES)
DIST_SOURCES = $(dwebp_SOURCES)
ETAGS = etags
CTAGS = ctags
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AR = @AR@
AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CXX = @CXX@
CXXCPP = @CXXCPP@
CXXDEPMODE = @CXXDEPMODE@
CXXFLAGS = @CXXFLAGS@
CYGPATH_W = @CYGPATH_W@
DEFS = @DEFS@
DEPDIR = @DEPDIR@
DSYMUTIL = @DSYMUTIL@
ECHO = @ECHO@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
F77 = @F77@
FFLAGS = @FFLAGS@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
LTLIBOBJS = @LTLIBOBJS@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
NMEDIT = @NMEDIT@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
ac_ct_CXX = @ac_ct_CXX@
ac_ct_F77 = @ac_ct_F77@
am__include = @am__include@
am__leading_dot = @am__leading_dot@
am__quote = @am__quote@
am__tar = @am__tar@
am__untar = @am__untar@
bindir = @bindir@
build = @build@
build_alias = @build_alias@
build_cpu = @build_cpu@
build_os = @build_os@
build_vendor = @build_vendor@
builddir = @builddir@
datadir = @datadir@
datarootdir = @datarootdir@
docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
host = @host@
host_alias = @host_alias@
host_cpu = @host_cpu@
host_os = @host_os@
host_vendor = @host_vendor@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
sharedstatedir = @sharedstatedir@
srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
AM_CPPFLAGS = -I$(top_srcdir)/src
dwebp_SOURCES = dwebp.c
dwebp_LDADD = ../src/libwebpdecode.la
all: all-am
.SUFFIXES:
.SUFFIXES: .c .lo .o .obj
$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
@for dep in $?; do \
case '$(am__configure_deps)' in \
*$$dep*) \
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
&& exit 0; \
exit 1;; \
esac; \
done; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu examples/Makefile'; \
cd $(top_srcdir) && \
$(AUTOMAKE) --gnu examples/Makefile
.PRECIOUS: Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
*config.status*) \
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
*) \
echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
esac;
$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(top_srcdir)/configure: $(am__configure_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(ACLOCAL_M4): $(am__aclocal_m4_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
clean-noinstPROGRAMS:
@list='$(noinst_PROGRAMS)'; for p in $$list; do \
f=`echo $$p|sed 's/$(EXEEXT)$$//'`; \
echo " rm -f $$p $$f"; \
rm -f $$p $$f ; \
done
dwebp$(EXEEXT): $(dwebp_OBJECTS) $(dwebp_DEPENDENCIES)
@rm -f dwebp$(EXEEXT)
$(LINK) $(dwebp_OBJECTS) $(dwebp_LDADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
distclean-compile:
-rm -f *.tab.c
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dwebp.Po@am__quote@
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c $<
.c.obj:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c `$(CYGPATH_W) '$<'`
.c.lo:
@am__fastdepCC_TRUE@ $(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LTCOMPILE) -c -o $@ $<
mostlyclean-libtool:
-rm -f *.lo
clean-libtool:
-rm -rf .libs _libs
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
mkid -fID $$unique
tags: TAGS
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
here=`pwd`; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
test -n "$$unique" || unique=$$empty_fix; \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
$$tags $$unique; \
fi
ctags: CTAGS
CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
test -z "$(CTAGS_ARGS)$$tags$$unique" \
|| $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
$$tags $$unique
GTAGS:
here=`$(am__cd) $(top_builddir) && pwd` \
&& cd $(top_srcdir) \
&& gtags -i $(GTAGS_ARGS) $$here
distclean-tags:
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
distdir: $(DISTFILES)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
esac; \
for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
fi; \
cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
else \
test -f $(distdir)/$$file \
|| cp -p $$d/$$file $(distdir)/$$file \
|| exit 1; \
fi; \
done
check-am: all-am
check: check-am
all-am: Makefile $(PROGRAMS)
installdirs:
install: install-am
install-exec: install-exec-am
install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
clean-am: clean-generic clean-libtool clean-noinstPROGRAMS \
mostlyclean-am
distclean: distclean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
distclean-tags
dvi: dvi-am
dvi-am:
html: html-am
info: info-am
info-am:
install-data-am:
install-dvi: install-dvi-am
install-exec-am:
install-html: install-html-am
install-info: install-info-am
install-man:
install-pdf: install-pdf-am
install-ps: install-ps-am
installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-compile mostlyclean-generic \
mostlyclean-libtool
pdf: pdf-am
pdf-am:
ps: ps-am
ps-am:
uninstall-am:
.MAKE: install-am install-strip
.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
clean-libtool clean-noinstPROGRAMS ctags distclean \
distclean-compile distclean-generic distclean-libtool \
distclean-tags distdir dvi dvi-am html html-am info info-am \
install install-am install-data install-data-am install-dvi \
install-dvi-am install-exec install-exec-am install-html \
install-html-am install-info install-info-am install-man \
install-pdf install-pdf-am install-ps install-ps-am \
install-strip installcheck installcheck-am installdirs \
maintainer-clean maintainer-clean-generic mostlyclean \
mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
pdf pdf-am ps ps-am tags uninstall uninstall-am
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

132
examples/dwebp.c Normal file
View File

@ -0,0 +1,132 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// simple command-line example calling libwebpdecode to
// decode a WebP image into a PPM image.
//
// Compile with: gcc -o dwebp dwebp.c -lwebpdecode
//
// Author: Skal (pascal.massimino@gmail.com)
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "webp/decode.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
static void help(const char *s) {
printf("Usage: dwebp "
"[options] [in_file] [-h] [-yuv] [-o ppm_file]\n");
}
int main(int argc, char *argv[]) {
const char *in_file = NULL;
const char *out_file = NULL;
int yuv_out = 0;
int c;
for (c = 1; c < argc; ++c) {
if (!strcmp(argv[c], "-h")) {
help(argv[0]);
return 0;
} else if (!strcmp(argv[c], "-o") && c < argc - 1) {
out_file = argv[++c];
} else if (!strcmp(argv[c], "-yuv")) {
yuv_out = 1;
} else if (argv[c][0] == '-') {
printf("Unknown option '%s'\n", argv[c]);
help(argv[0]);
return -1;
} else {
in_file = argv[c];
}
}
if (in_file == NULL) {
printf("missing input file!!\n");
help(argv[0]);
return -1;
}
uint32_t data_size = 0;
void* data = NULL;
{
FILE* const in = fopen(in_file, "rb");
if (!in) {
printf("cannot open input file '%s'\n", in_file);
return 1;
}
fseek(in, 0, SEEK_END);
data_size = ftell(in);
fseek(in, 0, SEEK_SET);
data = malloc(data_size);
const int ok = (fread(data, data_size, 1, in) == 1);
fclose(in);
if (!ok) {
free(data);
return -1;
}
}
int width, height, stride, uv_stride;
uint8_t* out = NULL, *u = NULL, *v = NULL;
if (!yuv_out) {
out = WebPDecodeRGB(data, data_size, &width, &height);
} else {
out = WebPDecodeYUV(data, data_size, &width, &height,
&u, &v, &stride, &uv_stride);
}
free(data);
if (!out) {
printf("Decoding of %s failed.\n", in_file);
return -1;
}
if (out_file) {
FILE* const fout = fopen(out_file, "wb");
if (fout) {
if (!yuv_out) {
fprintf(fout, "P6\n%d %d\n255\n", width, height);
fwrite(out, width * height, 3, fout);
} else {
int y;
fprintf(fout, "P5\n%d %d\n255\n", width, height * 3 / 2);
for (y = 0; y < height; ++y) {
fwrite(out + y * stride, width, 1, fout);
}
for (y = 0; y < (height + 1) / 2; ++y) {
fwrite(u + y * uv_stride, (width + 1) / 2, 1, fout);
}
for (y = 0; y < (height + 1) / 2; ++y) {
fwrite(v + y * uv_stride, (width + 1) / 2, 1, fout);
}
}
fclose(fout);
printf("Saved file %s\n", out_file);
} else {
printf("Error opening output file %s\n", out_file);
}
}
printf("Decoded %s. Dimensions: %d x %d.\n", in_file, width, height);
free(out);
return 0;
}
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

BIN
examples/test.webp Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 4.8 KiB

BIN
examples/test_ref.ppm Normal file
View File

Binary file not shown.

519
install-sh Executable file
View File

@ -0,0 +1,519 @@
#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2006-12-25.00
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# `make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
nl='
'
IFS=" "" $nl"
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit=${DOITPROG-}
if test -z "$doit"; then
doit_exec=exec
else
doit_exec=$doit
fi
# Put in absolute file names if you don't have them in your path;
# or use environment vars.
chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}
posix_glob='?'
initialize_posix_glob='
test "$posix_glob" != "?" || {
if (set -f) 2>/dev/null; then
posix_glob=
else
posix_glob=:
fi
}
'
posix_mkdir=
# Desired mode of installed file.
mode=0755
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=
src=
dst=
dir_arg=
dst_arg=
copy_on_change=false
no_target_directory=
usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
--help display this help and exit.
--version display version info and exit.
-c (ignored)
-C install only if different (preserve the last data modification time)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
RMPROG STRIPPROG
"
while test $# -ne 0; do
case $1 in
-c) ;;
-C) copy_on_change=true;;
-d) dir_arg=true;;
-g) chgrpcmd="$chgrpprog $2"
shift;;
--help) echo "$usage"; exit $?;;
-m) mode=$2
case $mode in
*' '* | *' '* | *'
'* | *'*'* | *'?'* | *'['*)
echo "$0: invalid mode: $mode" >&2
exit 1;;
esac
shift;;
-o) chowncmd="$chownprog $2"
shift;;
-s) stripcmd=$stripprog;;
-t) dst_arg=$2
shift;;
-T) no_target_directory=true;;
--version) echo "$0 $scriptversion"; exit $?;;
--) shift
break;;
-*) echo "$0: invalid option: $1" >&2
exit 1;;
*) break;;
esac
shift
done
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
# When -d is used, all remaining arguments are directories to create.
# When -t is used, the destination is already specified.
# Otherwise, the last argument is the destination. Remove it from $@.
for arg
do
if test -n "$dst_arg"; then
# $@ is not empty: it contains at least $arg.
set fnord "$@" "$dst_arg"
shift # fnord
fi
shift # arg
dst_arg=$arg
done
fi
if test $# -eq 0; then
if test -z "$dir_arg"; then
echo "$0: no input file specified." >&2
exit 1
fi
# It's OK to call `install-sh -d' without argument.
# This can happen when creating conditional directories.
exit 0
fi
if test -z "$dir_arg"; then
trap '(exit $?); exit' 1 2 13 15
# Set umask so as not to create temps with too-generous modes.
# However, 'strip' requires both read and write access to temps.
case $mode in
# Optimize common cases.
*644) cp_umask=133;;
*755) cp_umask=22;;
*[0-7])
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw='% 200'
fi
cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
*)
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw=,u+rw
fi
cp_umask=$mode$u_plus_rw;;
esac
fi
for src
do
# Protect names starting with `-'.
case $src in
-*) src=./$src;;
esac
if test -n "$dir_arg"; then
dst=$src
dstdir=$dst
test -d "$dstdir"
dstdir_status=$?
else
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if test ! -f "$src" && test ! -d "$src"; then
echo "$0: $src does not exist." >&2
exit 1
fi
if test -z "$dst_arg"; then
echo "$0: no destination specified." >&2
exit 1
fi
dst=$dst_arg
# Protect names starting with `-'.
case $dst in
-*) dst=./$dst;;
esac
# If destination is a directory, append the input filename; won't work
# if double slashes aren't ignored.
if test -d "$dst"; then
if test -n "$no_target_directory"; then
echo "$0: $dst_arg: Is a directory" >&2
exit 1
fi
dstdir=$dst
dst=$dstdir/`basename "$src"`
dstdir_status=0
else
# Prefer dirname, but fall back on a substitute if dirname fails.
dstdir=`
(dirname "$dst") 2>/dev/null ||
expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
X"$dst" : 'X\(//\)[^/]' \| \
X"$dst" : 'X\(//\)$' \| \
X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
echo X"$dst" |
sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
s//\1/
q
}
/^X\(\/\/\)[^/].*/{
s//\1/
q
}
/^X\(\/\/\)$/{
s//\1/
q
}
/^X\(\/\).*/{
s//\1/
q
}
s/.*/./; q'
`
test -d "$dstdir"
dstdir_status=$?
fi
fi
obsolete_mkdir_used=false
if test $dstdir_status != 0; then
case $posix_mkdir in
'')
# Create intermediate dirs using mode 755 as modified by the umask.
# This is like FreeBSD 'install' as of 1997-10-28.
umask=`umask`
case $stripcmd.$umask in
# Optimize common cases.
*[2367][2367]) mkdir_umask=$umask;;
.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
*[0-7])
mkdir_umask=`expr $umask + 22 \
- $umask % 100 % 40 + $umask % 20 \
- $umask % 10 % 4 + $umask % 2
`;;
*) mkdir_umask=$umask,go-w;;
esac
# With -d, create the new directory with the user-specified mode.
# Otherwise, rely on $mkdir_umask.
if test -n "$dir_arg"; then
mkdir_mode=-m$mode
else
mkdir_mode=
fi
posix_mkdir=false
case $umask in
*[123567][0-7][0-7])
# POSIX mkdir -p sets u+wx bits regardless of umask, which
# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
;;
*)
tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
if (umask $mkdir_umask &&
exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
then
if test -z "$dir_arg" || {
# Check for POSIX incompatibilities with -m.
# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
# other-writeable bit of parent directory when it shouldn't.
# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
ls_ld_tmpdir=`ls -ld "$tmpdir"`
case $ls_ld_tmpdir in
d????-?r-*) different_mode=700;;
d????-?--*) different_mode=755;;
*) false;;
esac &&
$mkdirprog -m$different_mode -p -- "$tmpdir" && {
ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
}
}
then posix_mkdir=:
fi
rmdir "$tmpdir/d" "$tmpdir"
else
# Remove any dirs left behind by ancient mkdir implementations.
rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
fi
trap '' 0;;
esac;;
esac
if
$posix_mkdir && (
umask $mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
)
then :
else
# The umask is ridiculous, or mkdir does not conform to POSIX,
# or it failed possibly due to a race condition. Create the
# directory the slow way, step by step, checking for races as we go.
case $dstdir in
/*) prefix='/';;
-*) prefix='./';;
*) prefix='';;
esac
eval "$initialize_posix_glob"
oIFS=$IFS
IFS=/
$posix_glob set -f
set fnord $dstdir
shift
$posix_glob set +f
IFS=$oIFS
prefixes=
for d
do
test -z "$d" && continue
prefix=$prefix$d
if test -d "$prefix"; then
prefixes=
else
if $posix_mkdir; then
(umask=$mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
# Don't fail if two instances are running concurrently.
test -d "$prefix" || exit 1
else
case $prefix in
*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
*) qprefix=$prefix;;
esac
prefixes="$prefixes '$qprefix'"
fi
fi
prefix=$prefix/
done
if test -n "$prefixes"; then
# Don't fail if two instances are running concurrently.
(umask $mkdir_umask &&
eval "\$doit_exec \$mkdirprog $prefixes") ||
test -d "$dstdir" || exit 1
obsolete_mkdir_used=true
fi
fi
fi
if test -n "$dir_arg"; then
{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
else
# Make a couple of temp file names in the proper directory.
dsttmp=$dstdir/_inst.$$_
rmtmp=$dstdir/_rm.$$_
# Trap to clean up those temp files at exit.
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
# Copy the file name to the temp name.
(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
# and set any options; do chmod last to preserve setuid bits.
#
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $cpprog $src $dsttmp" command.
#
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
{ test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
{ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
# If -C, don't bother to copy if it wouldn't change the file.
if $copy_on_change &&
old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
eval "$initialize_posix_glob" &&
$posix_glob set -f &&
set X $old && old=:$2:$4:$5:$6 &&
set X $new && new=:$2:$4:$5:$6 &&
$posix_glob set +f &&
test "$old" = "$new" &&
$cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
then
rm -f "$dsttmp"
else
# Rename the file to the real destination.
$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
# The rename failed, perhaps because mv can't rename something else
# to itself, or perhaps because mv is so ancient that it does not
# support -f.
{
# Now remove or move aside any old file at destination location.
# We try this two ways since rm can't unlink itself on some
# systems and the destination file might be busy for other
# reasons. In this case, the final cleanup might fail but the new
# file should still install successfully.
{
test ! -f "$dst" ||
$doit $rmcmd -f "$dst" 2>/dev/null ||
{ $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
{ $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
} ||
{ echo "$0: cannot unlink or rename $dst" >&2
(exit 1); exit 1
}
} &&
# Now rename the file to the real destination.
$doit $mvcmd "$dsttmp" "$dst"
}
fi || exit 1
trap '' 0
fi
done
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

6964
ltmain.sh Normal file
View File

File diff suppressed because it is too large Load Diff

367
missing Executable file
View File

@ -0,0 +1,367 @@
#! /bin/sh
# Common stub for a few missing GNU programs while installing.
scriptversion=2006-05-10.23
# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006
# Free Software Foundation, Inc.
# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
if test $# -eq 0; then
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
fi
run=:
sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
# In the cases where this matters, `missing' is being run in the
# srcdir already.
if test -f configure.ac; then
configure_ac=configure.ac
else
configure_ac=configure.in
fi
msg="missing on your system"
case $1 in
--run)
# Try to run requested program, and just exit if it succeeds.
run=
shift
"$@" && exit 0
# Exit code 63 means version mismatch. This often happens
# when the user try to use an ancient version of a tool on
# a file that requires a minimum version. In this case we
# we should proceed has if the program had been absent, or
# if --run hadn't been passed.
if test $? = 63; then
run=:
msg="probably too old"
fi
;;
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
error status if there is no known handling for PROGRAM.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
--run try to run the given command, and emulate it if it fails
Supported PROGRAM values:
aclocal touch file \`aclocal.m4'
autoconf touch file \`configure'
autoheader touch file \`config.h.in'
autom4te touch the output file, or create a stub one
automake touch all \`Makefile.in' files
bison create \`y.tab.[ch]', if possible, from existing .[ch]
flex create \`lex.yy.c', if possible, from existing .c
help2man touch the output file
lex create \`lex.yy.c', if possible, from existing .c
makeinfo touch the output file
tar try tar, gnutar, gtar, then tar without non-portable flags
yacc create \`y.tab.[ch]', if possible, from existing .[ch]
Send bug reports to <bug-automake@gnu.org>."
exit $?
;;
-v|--v|--ve|--ver|--vers|--versi|--versio|--version)
echo "missing $scriptversion (GNU Automake)"
exit $?
;;
-*)
echo 1>&2 "$0: Unknown \`$1' option"
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
;;
esac
# Now exit if we have it, but it failed. Also exit now if we
# don't have it and --version was passed (most likely to detect
# the program).
case $1 in
lex|yacc)
# Not GNU programs, they don't have --version.
;;
tar)
if test -n "$run"; then
echo 1>&2 "ERROR: \`tar' requires --run"
exit 1
elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
exit 1
fi
;;
*)
if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
# We have it, but it failed.
exit 1
elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
# Could not run --version or --help. This is probably someone
# running `$TOOL --version' or `$TOOL --help' to check whether
# $TOOL exists and not knowing $TOOL uses missing.
exit 1
fi
;;
esac
# If it does not exist, or fails to run (possibly an outdated version),
# try to emulate it.
case $1 in
aclocal*)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`acinclude.m4' or \`${configure_ac}'. You might want
to install the \`Automake' and \`Perl' packages. Grab them from
any GNU archive site."
touch aclocal.m4
;;
autoconf)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`${configure_ac}'. You might want to install the
\`Autoconf' and \`GNU m4' packages. Grab them from any GNU
archive site."
touch configure
;;
autoheader)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`acconfig.h' or \`${configure_ac}'. You might want
to install the \`Autoconf' and \`GNU m4' packages. Grab them
from any GNU archive site."
files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
test -z "$files" && files="config.h"
touch_files=
for f in $files; do
case $f in
*:*) touch_files="$touch_files "`echo "$f" |
sed -e 's/^[^:]*://' -e 's/:.*//'`;;
*) touch_files="$touch_files $f.in";;
esac
done
touch $touch_files
;;
automake*)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
You might want to install the \`Automake' and \`Perl' packages.
Grab them from any GNU archive site."
find . -type f -name Makefile.am -print |
sed 's/\.am$/.in/' |
while read f; do touch "$f"; done
;;
autom4te)
echo 1>&2 "\
WARNING: \`$1' is needed, but is $msg.
You might have modified some files without having the
proper tools for further handling them.
You can get \`$1' as part of \`Autoconf' from any GNU
archive site."
file=`echo "$*" | sed -n "$sed_output"`
test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
if test -f "$file"; then
touch $file
else
test -z "$file" || exec >$file
echo "#! /bin/sh"
echo "# Created by GNU Automake missing as a replacement of"
echo "# $ $@"
echo "exit 0"
chmod +x $file
exit 1
fi
;;
bison|yacc)
echo 1>&2 "\
WARNING: \`$1' $msg. You should only need it if
you modified a \`.y' file. You may need the \`Bison' package
in order for those modifications to take effect. You can get
\`Bison' from any GNU archive site."
rm -f y.tab.c y.tab.h
if test $# -ne 1; then
eval LASTARG="\${$#}"
case $LASTARG in
*.y)
SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
if test -f "$SRCFILE"; then
cp "$SRCFILE" y.tab.c
fi
SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
if test -f "$SRCFILE"; then
cp "$SRCFILE" y.tab.h
fi
;;
esac
fi
if test ! -f y.tab.h; then
echo >y.tab.h
fi
if test ! -f y.tab.c; then
echo 'main() { return 0; }' >y.tab.c
fi
;;
lex|flex)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a \`.l' file. You may need the \`Flex' package
in order for those modifications to take effect. You can get
\`Flex' from any GNU archive site."
rm -f lex.yy.c
if test $# -ne 1; then
eval LASTARG="\${$#}"
case $LASTARG in
*.l)
SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
if test -f "$SRCFILE"; then
cp "$SRCFILE" lex.yy.c
fi
;;
esac
fi
if test ! -f lex.yy.c; then
echo 'main() { return 0; }' >lex.yy.c
fi
;;
help2man)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a dependency of a manual page. You may need the
\`Help2man' package in order for those modifications to take
effect. You can get \`Help2man' from any GNU archive site."
file=`echo "$*" | sed -n "$sed_output"`
test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
if test -f "$file"; then
touch $file
else
test -z "$file" || exec >$file
echo ".ab help2man is required to generate this page"
exit 1
fi
;;
makeinfo)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a \`.texi' or \`.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy \`make' (AIX,
DU, IRIX). You might want to install the \`Texinfo' package or
the \`GNU make' package. Grab either from any GNU archive site."
# The file to touch is that specified with -o ...
file=`echo "$*" | sed -n "$sed_output"`
test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
if test -z "$file"; then
# ... or it is the one specified with @setfilename ...
infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
file=`sed -n '
/^@setfilename/{
s/.* \([^ ]*\) *$/\1/
p
q
}' $infile`
# ... or it is derived from the source name (dir/f.texi becomes f.info)
test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
fi
# If the file does not exist, the user really needs makeinfo;
# let's fail without touching anything.
test -f $file || exit 1
touch $file
;;
tar)
shift
# We have already tried tar in the generic part.
# Look for gnutar/gtar before invocation to avoid ugly error
# messages.
if (gnutar --version > /dev/null 2>&1); then
gnutar "$@" && exit 0
fi
if (gtar --version > /dev/null 2>&1); then
gtar "$@" && exit 0
fi
firstarg="$1"
if shift; then
case $firstarg in
*o*)
firstarg=`echo "$firstarg" | sed s/o//`
tar "$firstarg" "$@" && exit 0
;;
esac
case $firstarg in
*h*)
firstarg=`echo "$firstarg" | sed s/h//`
tar "$firstarg" "$@" && exit 0
;;
esac
fi
echo 1>&2 "\
WARNING: I can't seem to be able to run \`tar' with the given arguments.
You may want to install GNU tar or Free paxutils, or check the
command line arguments."
exit 1
;;
*)
echo 1>&2 "\
WARNING: \`$1' is needed, and is $msg.
You might have modified some files without having the
proper tools for further handling them. Check the \`README' file,
it often tells you about the needed prerequisites for installing
this package. You may also peek at any GNU archive site, in case
some other package would contain this missing \`$1' program."
exit 1
;;
esac
exit 0
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

8
src/Makefile.am Normal file
View File

@ -0,0 +1,8 @@
AM_CPPFLAGS = -I$(top_buildir)/src
lib_LTLIBRARIES = libwebpdecode.la
libwebpdecode_la_SOURCES = webp/decode.h webp/vp8.h bits.h vp8i.h yuv.h bits.c dsp.c frame.c quant.c tree.c vp8.c webp.c yuv.c
libwebpdecode_la_LDFLAGS = -version-info 0:0:0
libwebpdecodeinclude_HEADERS = webp/decode.h webp/decode_vp8.h
libwebpdecodeincludedir = $(includedir)/webp
noinst_HEADERS = bits.h vp8i.h yuv.h

503
src/Makefile.in Normal file
View File

@ -0,0 +1,503 @@
# Makefile.in generated by automake 1.10.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
build_triplet = @build@
host_triplet = @host@
subdir = src
DIST_COMMON = $(libwebpdecodeinclude_HEADERS) $(noinst_HEADERS) \
$(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.ac
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES =
am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
am__vpath_adj = case $$p in \
$(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
*) f=$$p;; \
esac;
am__strip_dir = `echo $$p | sed -e 's|^.*/||'`;
am__installdirs = "$(DESTDIR)$(libdir)" \
"$(DESTDIR)$(libwebpdecodeincludedir)"
libLTLIBRARIES_INSTALL = $(INSTALL)
LTLIBRARIES = $(lib_LTLIBRARIES)
libwebpdecode_la_LIBADD =
am_libwebpdecode_la_OBJECTS = bits.lo dsp.lo frame.lo quant.lo tree.lo \
vp8.lo webp.lo yuv.lo
libwebpdecode_la_OBJECTS = $(am_libwebpdecode_la_OBJECTS)
libwebpdecode_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(libwebpdecode_la_LDFLAGS) $(LDFLAGS) -o $@
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
--mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
$(LDFLAGS) -o $@
SOURCES = $(libwebpdecode_la_SOURCES)
DIST_SOURCES = $(libwebpdecode_la_SOURCES)
libwebpdecodeincludeHEADERS_INSTALL = $(INSTALL_HEADER)
HEADERS = $(libwebpdecodeinclude_HEADERS) $(noinst_HEADERS)
ETAGS = etags
CTAGS = ctags
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AR = @AR@
AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CXX = @CXX@
CXXCPP = @CXXCPP@
CXXDEPMODE = @CXXDEPMODE@
CXXFLAGS = @CXXFLAGS@
CYGPATH_W = @CYGPATH_W@
DEFS = @DEFS@
DEPDIR = @DEPDIR@
DSYMUTIL = @DSYMUTIL@
ECHO = @ECHO@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
F77 = @F77@
FFLAGS = @FFLAGS@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LIBTOOL = @LIBTOOL@
LN_S = @LN_S@
LTLIBOBJS = @LTLIBOBJS@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
NMEDIT = @NMEDIT@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
ac_ct_CXX = @ac_ct_CXX@
ac_ct_F77 = @ac_ct_F77@
am__include = @am__include@
am__leading_dot = @am__leading_dot@
am__quote = @am__quote@
am__tar = @am__tar@
am__untar = @am__untar@
bindir = @bindir@
build = @build@
build_alias = @build_alias@
build_cpu = @build_cpu@
build_os = @build_os@
build_vendor = @build_vendor@
builddir = @builddir@
datadir = @datadir@
datarootdir = @datarootdir@
docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
host = @host@
host_alias = @host_alias@
host_cpu = @host_cpu@
host_os = @host_os@
host_vendor = @host_vendor@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
sharedstatedir = @sharedstatedir@
srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
AM_CPPFLAGS = -I$(top_buildir)/src
lib_LTLIBRARIES = libwebpdecode.la
libwebpdecode_la_SOURCES = webp/decode.h webp/vp8.h bits.h vp8i.h yuv.h bits.c dsp.c frame.c quant.c tree.c vp8.c webp.c yuv.c
libwebpdecode_la_LDFLAGS = -version-info 0:0:0
libwebpdecodeinclude_HEADERS = webp/decode.h webp/decode_vp8.h
libwebpdecodeincludedir = $(includedir)/webp
noinst_HEADERS = bits.h vp8i.h yuv.h
all: all-am
.SUFFIXES:
.SUFFIXES: .c .lo .o .obj
$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
@for dep in $?; do \
case '$(am__configure_deps)' in \
*$$dep*) \
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
&& exit 0; \
exit 1;; \
esac; \
done; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/Makefile'; \
cd $(top_srcdir) && \
$(AUTOMAKE) --gnu src/Makefile
.PRECIOUS: Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
*config.status*) \
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
*) \
echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
esac;
$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(top_srcdir)/configure: $(am__configure_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(ACLOCAL_M4): $(am__aclocal_m4_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
install-libLTLIBRARIES: $(lib_LTLIBRARIES)
@$(NORMAL_INSTALL)
test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
if test -f $$p; then \
f=$(am__strip_dir) \
echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(libdir)/$$f'"; \
$(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(libLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) "$$p" "$(DESTDIR)$(libdir)/$$f"; \
else :; fi; \
done
uninstall-libLTLIBRARIES:
@$(NORMAL_UNINSTALL)
@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
p=$(am__strip_dir) \
echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$p'"; \
$(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$p"; \
done
clean-libLTLIBRARIES:
-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
test "$$dir" != "$$p" || dir=.; \
echo "rm -f \"$${dir}/so_locations\""; \
rm -f "$${dir}/so_locations"; \
done
libwebpdecode.la: $(libwebpdecode_la_OBJECTS) $(libwebpdecode_la_DEPENDENCIES)
$(libwebpdecode_la_LINK) -rpath $(libdir) $(libwebpdecode_la_OBJECTS) $(libwebpdecode_la_LIBADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
distclean-compile:
-rm -f *.tab.c
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bits.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dsp.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/frame.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/quant.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tree.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vp8.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/webp.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/yuv.Plo@am__quote@
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c $<
.c.obj:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c `$(CYGPATH_W) '$<'`
.c.lo:
@am__fastdepCC_TRUE@ $(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@am__fastdepCC_TRUE@ mv -f $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(LTCOMPILE) -c -o $@ $<
mostlyclean-libtool:
-rm -f *.lo
clean-libtool:
-rm -rf .libs _libs
install-libwebpdecodeincludeHEADERS: $(libwebpdecodeinclude_HEADERS)
@$(NORMAL_INSTALL)
test -z "$(libwebpdecodeincludedir)" || $(MKDIR_P) "$(DESTDIR)$(libwebpdecodeincludedir)"
@list='$(libwebpdecodeinclude_HEADERS)'; for p in $$list; do \
if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
f=$(am__strip_dir) \
echo " $(libwebpdecodeincludeHEADERS_INSTALL) '$$d$$p' '$(DESTDIR)$(libwebpdecodeincludedir)/$$f'"; \
$(libwebpdecodeincludeHEADERS_INSTALL) "$$d$$p" "$(DESTDIR)$(libwebpdecodeincludedir)/$$f"; \
done
uninstall-libwebpdecodeincludeHEADERS:
@$(NORMAL_UNINSTALL)
@list='$(libwebpdecodeinclude_HEADERS)'; for p in $$list; do \
f=$(am__strip_dir) \
echo " rm -f '$(DESTDIR)$(libwebpdecodeincludedir)/$$f'"; \
rm -f "$(DESTDIR)$(libwebpdecodeincludedir)/$$f"; \
done
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
mkid -fID $$unique
tags: TAGS
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
here=`pwd`; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
test -n "$$unique" || unique=$$empty_fix; \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
$$tags $$unique; \
fi
ctags: CTAGS
CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
tags=; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
test -z "$(CTAGS_ARGS)$$tags$$unique" \
|| $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
$$tags $$unique
GTAGS:
here=`$(am__cd) $(top_builddir) && pwd` \
&& cd $(top_srcdir) \
&& gtags -i $(GTAGS_ARGS) $$here
distclean-tags:
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
distdir: $(DISTFILES)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
esac; \
for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
fi; \
cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
else \
test -f $(distdir)/$$file \
|| cp -p $$d/$$file $(distdir)/$$file \
|| exit 1; \
fi; \
done
check-am: all-am
check: check-am
all-am: Makefile $(LTLIBRARIES) $(HEADERS)
installdirs:
for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(libwebpdecodeincludedir)"; do \
test -z "$$dir" || $(MKDIR_P) "$$dir"; \
done
install: install-am
install-exec: install-exec-am
install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
mostlyclean-am
distclean: distclean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
distclean-tags
dvi: dvi-am
dvi-am:
html: html-am
info: info-am
info-am:
install-data-am: install-libwebpdecodeincludeHEADERS
install-dvi: install-dvi-am
install-exec-am: install-libLTLIBRARIES
install-html: install-html-am
install-info: install-info-am
install-man:
install-pdf: install-pdf-am
install-ps: install-ps-am
installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-compile mostlyclean-generic \
mostlyclean-libtool
pdf: pdf-am
pdf-am:
ps: ps-am
ps-am:
uninstall-am: uninstall-libLTLIBRARIES \
uninstall-libwebpdecodeincludeHEADERS
.MAKE: install-am install-strip
.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
clean-libLTLIBRARIES clean-libtool ctags distclean \
distclean-compile distclean-generic distclean-libtool \
distclean-tags distdir dvi dvi-am html html-am info info-am \
install install-am install-data install-data-am install-dvi \
install-dvi-am install-exec install-exec-am install-html \
install-html-am install-info install-info-am \
install-libLTLIBRARIES install-libwebpdecodeincludeHEADERS \
install-man install-pdf install-pdf-am install-ps \
install-ps-am install-strip installcheck installcheck-am \
installdirs maintainer-clean maintainer-clean-generic \
mostlyclean mostlyclean-compile mostlyclean-generic \
mostlyclean-libtool pdf pdf-am ps ps-am tags uninstall \
uninstall-am uninstall-libLTLIBRARIES \
uninstall-libwebpdecodeincludeHEADERS
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

78
src/bits.c Normal file
View File

@ -0,0 +1,78 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Boolean decoder
//
// Author: Skal (pascal.massimino@gmail.com)
#include "bits.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// VP8BitReader
int VP8Init(VP8BitReader* const br, const uint8_t* buf, uint32_t size) {
if (!br || !buf || size < 2) {
return 0;
}
br->buf_ = buf + 2;
br->buf_end_ = buf + size;
br->left_ = -8;
br->value_ = (buf[0] << 8) | buf[1];
br->range_ = 255 - 1;
return 1;
}
const uint8_t kVP8Log2Range[128] = {
7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0
};
// range = ((range + 1) << kVP8Log2Range[range]) - 1
const uint8_t kVP8NewRange[128] = {
127, 127, 191, 127, 159, 191, 223, 127, 143, 159, 175, 191, 207, 223, 239,
127, 135, 143, 151, 159, 167, 175, 183, 191, 199, 207, 215, 223, 231, 239,
247, 127, 131, 135, 139, 143, 147, 151, 155, 159, 163, 167, 171, 175, 179,
183, 187, 191, 195, 199, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239,
243, 247, 251, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149,
151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179,
181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, 205, 207, 209,
211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, 235, 237, 239,
241, 243, 245, 247, 249, 251, 253, 127
};
//-----------------------------------------------------------------------------
// Higher-level calls
uint32_t VP8GetValue(VP8BitReader* const br, int bits) {
uint32_t v = 0;
while (bits-- > 0) {
v |= VP8GetBit(br, 0x80) << bits;
}
return v;
}
int32_t VP8GetSignedValue(VP8BitReader* const br, int bits) {
const int value = (bits > 0) ? VP8GetValue(br, bits) : 0;
return VP8Get(br) ? -value : value;
}
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

106
src/bits.h Normal file
View File

@ -0,0 +1,106 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Boolean decoder
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_DECODE_BITS_H_
#define WEBP_DECODE_BITS_H_
#include <assert.h>
#include "webp/decode_vp8.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// Bitreader and code-tree reader
typedef struct {
const uint8_t* buf_; // next byte to be read
const uint8_t* buf_end_; // end of read buffer
int eof_; // true if input is exhausted
// boolean decoder
uint32_t range_; // current range minus 1. In [127, 254] interval.
uint32_t value_; // current value
int left_; // how many unused bits (negated)
} VP8BitReader;
// Initialize the bit reader and the boolean decoder. Return true if ok.
int VP8Init(VP8BitReader* const br, const uint8_t* buf, uint32_t size);
// return the next value made of 'num_bits' bits
uint32_t VP8GetValue(VP8BitReader* const br, int num_bits);
static inline uint32_t VP8Get(VP8BitReader* const br) {
return VP8GetValue(br, 1);
}
// return the next value with sign-extension.
int32_t VP8GetSignedValue(VP8BitReader* const br, int num_bits);
// Read a bit with proba 'prob'. Speed-critical function!
extern const uint8_t kVP8Log2Range[128];
extern const uint8_t kVP8NewRange[128];
static inline uint32_t VP8GetByte(VP8BitReader* const br) {
assert(br);
if (br->buf_ < br->buf_end_) {
assert(br->buf_);
return *br->buf_++;
}
br->eof_ = 1;
return 0x80;
}
static inline void VP8Shift(VP8BitReader* const br) {
// range_ is in [0..127] interval here.
const int shift = kVP8Log2Range[br->range_];
br->range_ = kVP8NewRange[br->range_];
br->value_ <<= shift;
br->left_ += shift;
if (br->left_ > 0) {
br->value_ |= VP8GetByte(br) << br->left_;
br->left_ -= 8;
}
}
static inline uint32_t VP8GetBit(VP8BitReader* const br, int prob) {
const uint32_t split = (br->range_ * prob) >> 8;
const uint32_t bit = ((br->value_ >> 8) > split);
if (bit) {
br->range_ -= split + 1;
br->value_ -= (split + 1) << 8;
} else {
br->range_ = split;
}
if (br->range_ < 0x7f) {
VP8Shift(br);
}
return bit;
}
static inline int VP8GetSigned(VP8BitReader* const br, int v) {
const uint32_t split = br->range_ >> 1;
const uint32_t bit = ((br->value_ >> 8) > split);
if (bit) {
br->range_ -= split + 1;
br->value_ -= (split + 1) << 8;
v = -v;
} else {
br->range_ = split;
}
VP8Shift(br);
return v;
}
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_DECODE_BITS_H_

675
src/dsp.c Normal file
View File

@ -0,0 +1,675 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// speed-critical functions.
//
// Author: Skal (pascal.massimino@gmail.com)
#include "vp8i.h"
#if defined(__SSE2__)
#include <emmintrin.h>
#endif
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// run-time tables (~4k)
static uint8_t abs0[255 + 255 + 1]; // abs(i)
static uint8_t abs1[255 + 255 + 1]; // abs(i)>>1
static int8_t sclip1[1020 + 1020 + 1]; // clips [-1020, 1020] to [-128, 127]
static int8_t sclip2[112 + 112 + 1]; // clips [-112, 112] to [-16, 15]
static uint8_t clip1[255 + 510 + 1]; // clips [-255,510] to [0,255]
static int tables_ok = 0;
void VP8DspInitTables() {
if (!tables_ok) {
for (int i = -255; i <= 255; ++i) {
abs0[255 + i] = (i < 0) ? -i : i;
abs1[255 + i] = abs0[255 + i] >> 1;
}
for (int i = -1020; i <= 1020; ++i) {
sclip1[1020 + i] = (i < -128) ? -128 : (i > 127) ? 127 : i;
}
for (int i = -112; i <= 112; ++i) {
sclip2[112 + i] = (i < -16) ? -16 : (i > 15) ? 15 : i;
}
for (int i = -255; i <= 255 + 255; ++i) {
clip1[255 + i] = (i < 0) ? 0 : (i > 255) ? 255 : i;
}
tables_ok = 1;
}
}
static inline uint8_t clip_8b(int v) {
assert(v >= -255 && v <= 255 + 255);
return clip1[255 + v];
}
//-----------------------------------------------------------------------------
// Transforms (Paragraph 14.4)
#define STORE(x, y, v) \
dst[x + y * BPS] = clip_8b(dst[x + y * BPS] + ((v) >> 3))
static const int kC1 = 20091 + (1 << 16);
static const int kC2 = 35468;
#define MUL(a, b) (((a) * (b)) >> 16)
static void Transform(const int16_t* in, uint8_t* dst) {
int C[4 * 4], *tmp;
tmp = C;
for (int i = 0; i < 4; ++i) { // vertical pass
const int a = in[0] + in[8];
const int b = in[0] - in[8];
const int c = MUL(in[4], kC2) - MUL(in[12], kC1);
const int d = MUL(in[4], kC1) + MUL(in[12], kC2);
tmp[0] = a + d;
tmp[1] = b + c;
tmp[2] = b - c;
tmp[3] = a - d;
tmp += 4;
in++;
}
tmp = C;
for (int i = 0; i < 4; ++i) { // horizontal pass
const int dc = tmp[0] + 4;
const int a = dc + tmp[8];
const int b = dc - tmp[8];
const int c = MUL(tmp[4], kC2) - MUL(tmp[12], kC1);
const int d = MUL(tmp[4], kC1) + MUL(tmp[12], kC2);
STORE(0, 0, a + d);
STORE(1, 0, b + c);
STORE(2, 0, b - c);
STORE(3, 0, a - d);
tmp++;
dst += BPS;
}
}
#undef MUL
static void TransformUV(const int16_t* in, uint8_t* dst) {
Transform(in + 0 * 16, dst);
Transform(in + 1 * 16, dst + 4);
Transform(in + 2 * 16, dst + 4 * BPS);
Transform(in + 3 * 16, dst + 4 * BPS + 4);
}
static void TransformDC(const int16_t *in, uint8_t* dst) {
const int DC = in[0] + 4;
for (int j = 0; j < 4; ++j) {
for (int i = 0; i < 4; ++i) {
STORE(i, j, DC);
}
}
}
static void TransformDCUV(const int16_t* in, uint8_t* dst) {
if (in[0 * 16]) TransformDC(in + 0 * 16, dst);
if (in[1 * 16]) TransformDC(in + 1 * 16, dst + 4);
if (in[2 * 16]) TransformDC(in + 2 * 16, dst + 4 * BPS);
if (in[3 * 16]) TransformDC(in + 3 * 16, dst + 4 * BPS + 4);
}
#undef STORE
// default C implementations:
VP8Idct VP8Transform = Transform;
VP8Idct VP8TransformUV = TransformUV;
VP8Idct VP8TransformDC = TransformDC;
VP8Idct VP8TransformDCUV = TransformDCUV;
//-----------------------------------------------------------------------------
// Paragraph 14.3
static void TransformWHT(const int16_t* in, int16_t* out) {
int tmp[16];
for (int i = 0; i < 4; ++i) {
const int a0 = in[0 + i] + in[12 + i];
const int a1 = in[4 + i] + in[ 8 + i];
const int a2 = in[4 + i] - in[ 8 + i];
const int a3 = in[0 + i] - in[12 + i];
tmp[0 + i] = a0 + a1;
tmp[8 + i] = a0 - a1;
tmp[4 + i] = a3 + a2;
tmp[12 + i] = a3 - a2;
}
for (int i = 0; i < 4; ++i) {
const int dc = tmp[0 + i * 4] + 3; // w/ rounder
const int a0 = dc + tmp[3 + i * 4];
const int a1 = tmp[1 + i * 4] + tmp[2 + i * 4];
const int a2 = tmp[1 + i * 4] - tmp[2 + i * 4];
const int a3 = dc - tmp[3 + i * 4];
out[ 0] = (a0 + a1) >> 3;
out[16] = (a3 + a2) >> 3;
out[32] = (a0 - a1) >> 3;
out[48] = (a3 - a2) >> 3;
out += 64;
}
}
void (*VP8TransformWHT)(const int16_t* in, int16_t* out) = TransformWHT;
//-----------------------------------------------------------------------------
// Intra predictions
#define OUT(x, y) dst[(x) + (y) * BPS]
static inline void TrueMotion(uint8_t *dst, int size) {
const uint8_t* top = dst - BPS;
const int tl = top[-1];
for (int y = 0; y < size; ++y) {
const uint8_t* const clip = clip1 + 255 + dst[-1] - tl;
for (int x = 0; x < size; ++x) {
dst[x] = clip[top[x]];
}
dst += BPS;
}
}
static void TM4(uint8_t *dst) { TrueMotion(dst, 4); }
static void TM8uv(uint8_t *dst) { TrueMotion(dst, 8); }
static void TM16(uint8_t *dst) { TrueMotion(dst, 16); }
//-----------------------------------------------------------------------------
// 16x16
static void V16(uint8_t *dst) { // vertical
for (int j = 0; j < 16; ++j) {
memcpy(dst + j * BPS, dst - BPS, 16);
}
}
static void H16(uint8_t *dst) { // horizontal
for (int j = 16; j > 0; --j) {
memset(dst, dst[-1], 16);
dst += BPS;
}
}
static inline void Put16(int v, uint8_t* dst) {
for (int j = 0; j < 16; ++j) {
memset(dst + j * BPS, v, 16);
}
}
static void DC16(uint8_t *dst) { // DC
int DC = 16;
for (int j = 0; j < 16; ++j) {
DC += dst[-1 + j * BPS] + dst[j - BPS];
}
Put16(DC >> 5, dst);
}
static void DC16NoTop(uint8_t *dst) { // DC with top samples not available
int DC = 8;
int j;
for (j = 0; j < 16; ++j) {
DC += dst[-1 + j * BPS];
}
Put16(DC >> 4, dst);
}
static void DC16NoLeft(uint8_t *dst) { // DC with left samples not available
int DC = 8;
int i;
for (i = 0; i < 16; ++i) {
DC += dst[i - BPS];
}
Put16(DC >> 4, dst);
}
static void DC16NoTopLeft(uint8_t *dst) { // DC with no top and left samples
Put16(0x80, dst);
}
//-----------------------------------------------------------------------------
// 4x4
static inline void Put4(uint32_t v, uint8_t* dst) {
for (int i = 4; i > 0; --i) {
*(uint32_t*)dst = v;
dst += BPS;
}
}
#define AVG3(a, b, c) (((a) + 2 * (b) + (c) + 2) >> 2)
#define AVG2(a, b) (((a) + (b) + 1) >> 1)
static void V4(uint8_t *dst) { // vertical
const uint8_t* top = dst - BPS;
const uint8_t vals[4] = {
AVG3(top[-1], top[0], top[1]),
AVG3(top[0], top[1], top[2]),
AVG3(top[1], top[2], top[3]),
AVG3(top[2], top[3], top[4])
};
const uint32_t v = *(uint32_t*)vals;
Put4(v, dst);
}
static void H4(uint8_t *dst) { // horizontal
const int A = dst[-1 - BPS];
const int B = dst[-1];
const int C = dst[-1 + BPS];
const int D = dst[-1 + 2 * BPS];
const int E = dst[-1 + 3 * BPS];
*(uint32_t*)(dst + 0 * BPS) = 0x01010101U * AVG3(A, B, C);
*(uint32_t*)(dst + 1 * BPS) = 0x01010101U * AVG3(B, C, D);
*(uint32_t*)(dst + 2 * BPS) = 0x01010101U * AVG3(C, D, E);
*(uint32_t*)(dst + 3 * BPS) = 0x01010101U * AVG3(D, E, E);
}
static void DC4(uint8_t *dst) { // DC
uint32_t dc = 4;
for (int i = 0; i < 4; ++i) {
dc += dst[i - BPS] + dst[-1 + i * BPS];
}
Put4((dc >> 3) * 0x01010101U, dst);
}
static void RD4(uint8_t *dst) { // Down-right
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
const int L = dst[-1 + 3 * BPS];
const int X = dst[-1 - BPS];
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
const int D = dst[3 - BPS];
OUT(0, 3) = AVG3(J, K, L);
OUT(0, 2) = OUT(1, 3) = AVG3(I, J, K);
OUT(0, 1) = OUT(1, 2) = OUT(2, 3) = AVG3(X, I, J);
OUT(0, 0) = OUT(1, 1) = OUT(2, 2) = OUT(3, 3) = AVG3(A, X, I);
OUT(1, 0) = OUT(2, 1) = OUT(3, 2) = AVG3(B, A, X);
OUT(2, 0) = OUT(3, 1) = AVG3(C, B, A);
OUT(3, 0) = AVG3(D, C, B);
}
static void LD4(uint8_t *dst) { // Down-Left
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
const int D = dst[3 - BPS];
const int E = dst[4 - BPS];
const int F = dst[5 - BPS];
const int G = dst[6 - BPS];
const int H = dst[7 - BPS];
OUT(0, 0) = AVG3(A, B, C);
OUT(1, 0) = OUT(0, 1) = AVG3(B, C, D);
OUT(2, 0) = OUT(1, 1) = OUT(0, 2) = AVG3(C, D, E);
OUT(3, 0) = OUT(2, 1) = OUT(1, 2) = OUT(0, 3) = AVG3(D, E, F);
OUT(3, 1) = OUT(2, 2) = OUT(1, 3) = AVG3(E, F, G);
OUT(3, 2) = OUT(2, 3) = AVG3(F, G, H);
OUT(3, 3) = AVG3(G, H, H);
}
static void VR4(uint8_t *dst) { // Vertical-Right
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
const int X = dst[-1 - BPS];
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
const int D = dst[3 - BPS];
OUT(0, 0) = OUT(1, 2) = AVG2(X, A);
OUT(1, 0) = OUT(2, 2) = AVG2(A, B);
OUT(2, 0) = OUT(3, 2) = AVG2(B, C);
OUT(3, 0) = AVG2(C, D);
OUT(0, 3) = AVG3(K, J, I);
OUT(0, 2) = AVG3(J, I, X);
OUT(0, 1) = OUT(1, 3) = AVG3(I, X, A);
OUT(1, 1) = OUT(2, 3) = AVG3(X, A, B);
OUT(2, 1) = OUT(3, 3) = AVG3(A, B, C);
OUT(3, 1) = AVG3(B, C, D);
}
static void VL4(uint8_t *dst) { // Vertical-Left
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
const int D = dst[3 - BPS];
const int E = dst[4 - BPS];
const int F = dst[5 - BPS];
const int G = dst[6 - BPS];
const int H = dst[7 - BPS];
OUT(0, 0) = AVG2(A, B);
OUT(1, 0) = OUT(0, 2) = AVG2(B, C);
OUT(2, 0) = OUT(1, 2) = AVG2(C, D);
OUT(3, 0) = OUT(2, 2) = AVG2(D, E);
OUT(0, 1) = AVG3(A, B, C);
OUT(1, 1) = OUT(0, 3) = AVG3(B, C, D);
OUT(2, 1) = OUT(1, 3) = AVG3(C, D, E);
OUT(3, 1) = OUT(2, 3) = AVG3(D, E, F);
OUT(3, 2) = AVG3(E, F, G);
OUT(3, 3) = AVG3(F, G, H);
}
static void HU4(uint8_t *dst) { // Horizontal-Up
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
const int L = dst[-1 + 3 * BPS];
OUT(0, 0) = AVG2(I, J);
OUT(2, 0) = OUT(0, 1) = AVG2(J, K);
OUT(2, 1) = OUT(0, 2) = AVG2(K, L);
OUT(1, 0) = AVG3(I, J, K);
OUT(3, 0) = OUT(1, 1) = AVG3(J, K, L);
OUT(3, 1) = OUT(1, 2) = AVG3(K, L, L);
OUT(3, 2) = OUT(2, 2) =
OUT(0, 3) = OUT(1, 3) = OUT(2, 3) = OUT(3, 3) = L;
}
static void HD4(uint8_t *dst) { // Horizontal-Down
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
const int L = dst[-1 + 3 * BPS];
const int X = dst[-1 - BPS];
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
OUT(0, 0) = OUT(2, 1) = AVG2(I, X);
OUT(0, 1) = OUT(2, 2) = AVG2(J, I);
OUT(0, 2) = OUT(2, 3) = AVG2(K, J);
OUT(0, 3) = AVG2(L, K);
OUT(3, 0) = AVG3(A, B, C);
OUT(2, 0) = AVG3(X, A, B);
OUT(1, 0) = OUT(3, 1) = AVG3(I, X, A);
OUT(1, 1) = OUT(3, 2) = AVG3(J, I, X);
OUT(1, 2) = OUT(3, 3) = AVG3(K, J, I);
OUT(1, 3) = AVG3(L, K, J);
}
#undef AVG3
#undef AVG2
//-----------------------------------------------------------------------------
// Chroma
static void V8uv(uint8_t *dst) { // vertical
for (int j = 0; j < 8; ++j) {
memcpy(dst + j * BPS, dst - BPS, 8);
}
}
static void H8uv(uint8_t *dst) { // horizontal
for (int j = 0; j < 8; ++j) {
memset(dst, dst[-1], 8);
dst += BPS;
}
}
// helper for chroma-DC predictions
static inline void Put8x8uv(uint64_t v, uint8_t* dst) {
for (int j = 0; j < 8; ++j) {
*(uint64_t*)(dst + j * BPS) = v;
}
}
static void DC8uv(uint8_t *dst) { // DC
int dc0 = 8;
for (int i = 0; i < 8; ++i) {
dc0 += dst[i - BPS] + dst[-1 + i * BPS];
}
const uint64_t t = (dc0 >> 4) * 0x0101010101010101ULL;
Put8x8uv(t, dst);
}
static void DC8uvNoLeft(uint8_t *dst) { // DC with no left samples
int dc0 = 4;
for (int i = 0; i < 8; ++i) {
dc0 += dst[i - BPS];
}
const uint64_t v = (dc0 >> 3) * 0x0101010101010101ULL;
Put8x8uv(v, dst);
}
static void DC8uvNoTop(uint8_t *dst) { // DC with no top samples
int dc0 = 4;
for (int i = 0; i < 8; ++i) {
dc0 += dst[-1 + i * BPS];
}
const uint64_t v = (dc0 >> 3) * 0x0101010101010101ULL;
Put8x8uv(v, dst);
}
static void DC8uvNoTopLeft(uint8_t *dst) { // DC with nothing
Put8x8uv(0x8080808080808080ULL, dst);
}
//-----------------------------------------------------------------------------
// default C implementations
VP8PredFunc VP8PredLuma4[11] = {
DC4, TM4, V4, H4, LD4, RD4, VR4, VL4, HD4, HU4
};
VP8PredFunc VP8PredLuma16[7] = {
DC16, TM16, V16, H16,
DC16NoTop, DC16NoLeft, DC16NoTopLeft
};
VP8PredFunc VP8PredChroma8[7] = {
DC8uv, TM8uv, V8uv, H8uv,
DC8uvNoTop, DC8uvNoLeft, DC8uvNoTopLeft
};
//-----------------------------------------------------------------------------
// Edge filtering functions
// 4 pixels in, 2 pixels out
static inline void do_filter2(uint8_t* p, int step) {
const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step];
const int a = 3 * (q0 - p0) + sclip1[1020 + p1 - q1];
const int a1 = sclip2[112 + ((a + 4) >> 3)];
const int a2 = sclip2[112 + ((a + 3) >> 3)];
p[-step] = clip1[255 + p0 + a2];
p[ 0] = clip1[255 + q0 - a1];
}
// 4 pixels in, 4 pixels out
static inline void do_filter4(uint8_t* p, int step) {
const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step];
const int a = 3 * (q0 - p0);
const int a1 = sclip2[112 + ((a + 4) >> 3)];
const int a2 = sclip2[112 + ((a + 3) >> 3)];
const int a3 = (a1 + 1) >> 1;
p[-2*step] = clip1[255 + p1 + a3];
p[- step] = clip1[255 + p0 + a2];
p[ 0] = clip1[255 + q0 - a1];
p[ step] = clip1[255 + q1 - a3];
}
// 6 pixels in, 6 pixels out
static inline void do_filter6(uint8_t* p, int step) {
const int p2 = p[-3*step], p1 = p[-2*step], p0 = p[-step];
const int q0 = p[0], q1 = p[step], q2 = p[2*step];
const int a = sclip1[1020 + 3 * (q0 - p0) + sclip1[1020 + p1 - q1]];
const int a1 = (27 * a + 63) >> 7; // eq. to ((3 * a + 7) * 9) >> 7
const int a2 = (18 * a + 63) >> 7; // eq. to ((2 * a + 7) * 9) >> 7
const int a3 = (9 * a + 63) >> 7; // eq. to ((1 * a + 7) * 9) >> 7
p[-3*step] = clip1[255 + p2 + a3];
p[-2*step] = clip1[255 + p1 + a2];
p[- step] = clip1[255 + p0 + a1];
p[ 0] = clip1[255 + q0 - a1];
p[ step] = clip1[255 + q1 - a2];
p[ 2*step] = clip1[255 + q2 - a3];
}
static inline int hev(const uint8_t* p, int step, int thresh) {
const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step];
return (abs0[255 + p1 - p0] > thresh) || (abs0[255 + q1 - q0] > thresh);
}
static inline int needs_filter(const uint8_t* p, int step, int thresh) {
const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step];
return (2 * abs0[255 + p0 - q0] + abs1[255 + p1 - q1]) <= thresh;
}
static inline int needs_filter2(const uint8_t* p, int step, int t, int it) {
const int p3 = p[-4*step], p2 = p[-3*step], p1 = p[-2*step], p0 = p[-step];
const int q0 = p[0], q1 = p[step], q2 = p[2*step], q3 = p[3*step];
if ((2 * abs0[255 + p0 - q0] + abs1[255 + p1 - q1]) > t)
return 0;
return abs0[255 + p3 - p2] <= it && abs0[255 + p2 - p1] <= it &&
abs0[255 + p1 - p0] <= it && abs0[255 + q3 - q2] <= it &&
abs0[255 + q2 - q1] <= it && abs0[255 + q1 - q0] <= it;
}
//-----------------------------------------------------------------------------
// Simple In-loop filtering (Paragraph 15.2)
static void SimpleVFilter16(uint8_t* p, int stride, int thresh) {
for (int i = 0; i < 16; ++i) {
if (needs_filter(p + i, stride, thresh)) {
do_filter2(p + i, stride);
}
}
}
static void SimpleHFilter16(uint8_t* p, int stride, int thresh) {
for (int i = 0; i < 16; ++i) {
if (needs_filter(p + i * stride, 1, thresh)) {
do_filter2(p + i * stride, 1);
}
}
}
static void SimpleVFilter16i(uint8_t* p, int stride, int thresh) {
for (int k = 3; k > 0; --k) {
p += 4 * stride;
SimpleVFilter16(p, stride, thresh);
}
}
static void SimpleHFilter16i(uint8_t* p, int stride, int thresh) {
for (int k = 3; k > 0; --k) {
p += 4;
SimpleHFilter16(p, stride, thresh);
}
}
//-----------------------------------------------------------------------------
// Complex In-loop filtering (Paragraph 15.3)
static inline void FilterLoop26(uint8_t* p, int hstride, int vstride, int size,
int thresh, int ithresh, int hev_thresh) {
while (size-- > 0) {
if (needs_filter2(p, hstride, thresh, ithresh)) {
if (hev(p, hstride, hev_thresh)) {
do_filter2(p, hstride);
} else {
do_filter6(p, hstride);
}
}
p += vstride;
}
}
static inline void FilterLoop24(uint8_t* p, int hstride, int vstride, int size,
int thresh, int ithresh, int hev_thresh) {
while (size-- > 0) {
if (needs_filter2(p, hstride, thresh, ithresh)) {
if (hev(p, hstride, hev_thresh)) {
do_filter2(p, hstride);
} else {
do_filter4(p, hstride);
}
}
p += vstride;
}
}
// on macroblock edges
static void VFilter16(uint8_t* p, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop26(p, stride, 1, 16, thresh, ithresh, hev_thresh);
}
static void HFilter16(uint8_t* p, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop26(p, 1, stride, 16, thresh, ithresh, hev_thresh);
}
// on three inner edges
static void VFilter16i(uint8_t* p, int stride,
int thresh, int ithresh, int hev_thresh) {
for (int k = 3; k > 0; --k) {
p += 4 * stride;
FilterLoop24(p, stride, 1, 16, thresh, ithresh, hev_thresh);
}
}
static void HFilter16i(uint8_t* p, int stride,
int thresh, int ithresh, int hev_thresh) {
for (int k = 3; k > 0; --k) {
p += 4;
FilterLoop24(p, 1, stride, 16, thresh, ithresh, hev_thresh);
}
}
// 8-pixels wide variant, for chroma filtering
static void VFilter8(uint8_t* u, uint8_t* v, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop26(u, stride, 1, 8, thresh, ithresh, hev_thresh);
FilterLoop26(v, stride, 1, 8, thresh, ithresh, hev_thresh);
}
static void HFilter8(uint8_t* u, uint8_t* v, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop26(u, 1, stride, 8, thresh, ithresh, hev_thresh);
FilterLoop26(v, 1, stride, 8, thresh, ithresh, hev_thresh);
}
static void VFilter8i(uint8_t* u, uint8_t* v, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop24(u + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh);
FilterLoop24(v + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh);
}
static void HFilter8i(uint8_t* u, uint8_t* v, int stride,
int thresh, int ithresh, int hev_thresh) {
FilterLoop24(u + 4, 1, stride, 8, thresh, ithresh, hev_thresh);
FilterLoop24(v + 4, 1, stride, 8, thresh, ithresh, hev_thresh);
}
//-----------------------------------------------------------------------------
void (*VP8VFilter16)(uint8_t*, int, int, int, int) = VFilter16;
void (*VP8HFilter16)(uint8_t*, int, int, int, int) = HFilter16;
void (*VP8VFilter8)(uint8_t*, uint8_t*, int, int, int, int) = VFilter8;
void (*VP8HFilter8)(uint8_t*, uint8_t*, int, int, int, int) = HFilter8;
void (*VP8VFilter16i)(uint8_t*, int, int, int, int) = VFilter16i;
void (*VP8HFilter16i)(uint8_t*, int, int, int, int) = HFilter16i;
void (*VP8VFilter8i)(uint8_t*, uint8_t*, int, int, int, int) = VFilter8i;
void (*VP8HFilter8i)(uint8_t*, uint8_t*, int, int, int, int) = HFilter8i;
void (*VP8SimpleVFilter16)(uint8_t*, int, int) = SimpleVFilter16;
void (*VP8SimpleHFilter16)(uint8_t*, int, int) = SimpleHFilter16;
void (*VP8SimpleVFilter16i)(uint8_t*, int, int) = SimpleVFilter16i;
void (*VP8SimpleHFilter16i)(uint8_t*, int, int) = SimpleHFilter16i;
//-----------------------------------------------------------------------------
void VP8DspInit() {
// later we'll plug some SSE2 variant here
}
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

407
src/frame.c Normal file
View File

@ -0,0 +1,407 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Frame-reconstruction function. Memory allocation.
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
#include "vp8i.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#define ALIGN_MASK (32 - 1)
//-----------------------------------------------------------------------------
// Memory setup
// how many extra luma lines are needed for caching, given a filtering level
static const uint8_t kFilterExtraRows[3] = { 0, 4, 8 };
int VP8InitFrame(VP8Decoder* const dec, VP8Io* io) {
const int mb_w = dec->mb_w_;
const int intra_pred_mode_size = 4 * mb_w * sizeof(uint8_t);
const int top_size = (16 + 8 + 8) * mb_w;
const int info_size = (mb_w + 1) * sizeof(VP8MB);
const int yuv_size = YUV_SIZE * sizeof(*dec->yuv_b_);
const int coeffs_size = 384 * sizeof(*dec->coeffs_);
const int cache_height = (dec->filter_type_ == 0) ? 0 :
(16 + kFilterExtraRows[dec->filter_type_]) * 3 / 2;
const int cache_size = top_size * cache_height;
const int needed = intra_pred_mode_size
+ top_size + info_size
+ yuv_size + coeffs_size
+ cache_size + ALIGN_MASK;
if (needed > dec->mem_size_) {
free(dec->mem_);
dec->mem_size_ = 0;
dec->mem_ = (uint8_t*)malloc(needed);
if (dec->mem_ == NULL) {
return VP8SetError(dec, 1, "no memory during frame initialization.");
}
dec->mem_size_ = needed;
}
uint8_t* mem = (uint8_t*)dec->mem_;
dec->intra_t_ = (uint8_t*)mem;
mem += intra_pred_mode_size;
dec->y_t_ = (uint8_t*)mem;
mem += 16 * mb_w;
dec->u_t_ = (uint8_t*)mem;
mem += 8 * mb_w;
dec->v_t_ = (uint8_t*)mem;
mem += 8 * mb_w;
dec->mb_info_ = ((VP8MB*)mem) + 1;
mem += info_size;
mem = (uint8_t*)((uint64_t)(mem + ALIGN_MASK) & ~ALIGN_MASK);
assert((yuv_size & ALIGN_MASK) == 0);
dec->yuv_b_ = (uint8_t*)mem;
mem += yuv_size;
dec->coeffs_ = (int16_t*)mem;
mem += coeffs_size;
dec->cache_y_stride_ = 16 * mb_w;
dec->cache_uv_stride_ = 8 * mb_w;
if (dec->filter_type_ == 0) {
dec->cache_y_ = NULL;
dec->cache_u_ = NULL;
dec->cache_v_ = NULL;
} else {
const int extra_rows = kFilterExtraRows[dec->filter_type_];
const int extra_y = extra_rows * dec->cache_y_stride_;
const int extra_uv =(extra_rows / 2) * dec->cache_uv_stride_;
dec->cache_y_ = ((uint8_t*)mem) + extra_y;
dec->cache_u_ = dec->cache_y_ + 16 * dec->cache_y_stride_ + extra_uv;
dec->cache_v_ = dec->cache_u_ + 8 * dec->cache_uv_stride_ + extra_uv;
}
mem += cache_size;
// note: left-info is initialized once for all.
memset(dec->mb_info_ - 1, 0, (mb_w + 1) * sizeof(*dec->mb_info_));
// initialize top
memset(dec->intra_t_, B_DC_PRED, intra_pred_mode_size);
// prepare 'io'
io->width = dec->pic_hdr_.width_;
io->height = dec->pic_hdr_.height_;
io->mb_x = 0;
io->mb_y = 0;
if (dec->filter_type_ == 0) {
io->y = dec->yuv_b_ + Y_OFF;
io->u = dec->yuv_b_ + U_OFF;
io->v = dec->yuv_b_ + V_OFF;
io->y_stride = BPS;
io->uv_stride = BPS;
} else {
io->y = dec->cache_y_;
io->u = dec->cache_u_;
io->v = dec->cache_v_;
io->y_stride = dec->cache_y_stride_;
io->uv_stride = dec->cache_uv_stride_;
io->mb_w = io->width;
}
// Init critical function pointers and look-up tables.
VP8DspInitTables();
VP8DspInit();
return 1;
}
//-----------------------------------------------------------------------------
// Filtering
static inline int hev_thresh_from_level(int level, int keyframe) {
if (keyframe) {
return (level >= 40) ? 2 : (level >= 15) ? 1 : 0;
} else {
return (level >= 40) ? 3 : (level >= 20) ? 2 : (level >= 15) ? 1 : 0;
}
}
static void DoFilter(VP8Decoder* const dec, int mb_x, int mb_y) {
VP8MB* const mb = dec->mb_info_ + mb_x;
uint8_t* const y_dst = dec->cache_y_ + mb_x * 16;
const int y_bps = dec->cache_y_stride_;
const int level = mb->f_level_;
const int ilevel = mb->f_ilevel_;
const int limit = 2 * level + ilevel;
if (dec->filter_type_ == 1) { // simple
if (mb_x > 0) {
VP8SimpleHFilter16(y_dst, y_bps, limit + 4);
}
if (mb->f_inner_) {
VP8SimpleHFilter16i(y_dst, y_bps, limit);
}
if (mb_y > 0) {
VP8SimpleVFilter16(y_dst, y_bps, limit + 4);
}
if (mb->f_inner_) {
VP8SimpleVFilter16i(y_dst, y_bps, limit);
}
} else { // complex
uint8_t* const u_dst = dec->cache_u_ + mb_x * 8;
uint8_t* const v_dst = dec->cache_v_ + mb_x * 8;
const int uv_bps = dec->cache_uv_stride_;
const int hev_thresh =
hev_thresh_from_level(level, dec->frm_hdr_.key_frame_);
if (mb_x > 0) {
VP8HFilter16(y_dst, y_bps, limit + 4, ilevel, hev_thresh);
VP8HFilter8(u_dst, v_dst, uv_bps, limit + 4, ilevel, hev_thresh);
}
if (mb->f_inner_) {
VP8HFilter16i(y_dst, y_bps, limit, ilevel, hev_thresh);
VP8HFilter8i(u_dst, v_dst, uv_bps, limit, ilevel, hev_thresh);
}
if (mb_y > 0) {
VP8VFilter16(y_dst, y_bps, limit + 4, ilevel, hev_thresh);
VP8VFilter8(u_dst, v_dst, uv_bps, limit + 4, ilevel, hev_thresh);
}
if (mb->f_inner_) {
VP8VFilter16i(y_dst, y_bps, limit, ilevel, hev_thresh);
VP8VFilter8i(u_dst, v_dst, uv_bps, limit, ilevel, hev_thresh);
}
}
}
void VP8StoreBlock(VP8Decoder* const dec) {
VP8MB* const info = dec->mb_info_ + dec->mb_x_;
int level = dec->filter_levels_[dec->segment_];
if (dec->filter_hdr_.use_lf_delta_) {
// TODO(skal): only CURRENT is handled for now.
level += dec->filter_hdr_.ref_lf_delta_[0];
if (dec->is_i4x4_) {
level += dec->filter_hdr_.mode_lf_delta_[0];
}
}
level = (level < 0) ? 0 : (level > 63) ? 63 : level;
info->f_level_ = level;
if (dec->filter_hdr_.sharpness_ > 0) {
if (dec->filter_hdr_.sharpness_ > 4) {
level >>= 2;
} else {
level >>= 1;
}
if (level > 9 - dec->filter_hdr_.sharpness_) {
level = 9 - dec->filter_hdr_.sharpness_;
}
}
info->f_ilevel_ = (level < 1) ? 1 : level;
info->f_inner_ = (!info->skip_ || dec->is_i4x4_);
// Transfer samples to row cache
uint8_t* const ydst = dec->cache_y_ + dec->mb_x_ * 16;
uint8_t* const udst = dec->cache_u_ + dec->mb_x_ * 8;
uint8_t* const vdst = dec->cache_v_ + dec->mb_x_ * 8;
for (int y = 0; y < 16; ++y) {
memcpy(ydst + y * dec->cache_y_stride_,
dec->yuv_b_ + Y_OFF + y * BPS, 16);
}
for (int y = 0; y < 8; ++y) {
memcpy(udst + y * dec->cache_uv_stride_,
dec->yuv_b_ + U_OFF + y * BPS, 8);
memcpy(vdst + y * dec->cache_uv_stride_,
dec->yuv_b_ + V_OFF + y * BPS, 8);
}
}
void VP8FilterRow(VP8Decoder* const dec, VP8Io* io) {
for (int mb_x = 0; mb_x < dec->mb_w_; ++mb_x) {
DoFilter(dec, mb_x, dec->mb_y_);
}
const int extra_y_rows = kFilterExtraRows[dec->filter_type_];
const int ysize = extra_y_rows * dec->cache_y_stride_;
const int uvsize = (extra_y_rows / 2) * dec->cache_uv_stride_;
uint8_t* const ydst = dec->cache_y_ - ysize;
uint8_t* const udst = dec->cache_u_ - uvsize;
uint8_t* const vdst = dec->cache_v_ - uvsize;
if (io->put) {
int y_end;
if (dec->mb_y_ > 0) {
io->mb_y = dec->mb_y_ * 16 - extra_y_rows;
io->y = ydst;
io->u = udst;
io->v = vdst;
if (dec->mb_y_ < dec->mb_h_ - 1) {
y_end = io->mb_y + 16;
} else {
y_end = io->height; // last macroblock row.
}
} else { // first macroblock row.
io->mb_y = 0;
y_end = 16 - extra_y_rows;
io->y = dec->cache_y_;
io->u = dec->cache_u_;
io->v = dec->cache_v_;
}
if (y_end > io->height) {
y_end = io->height;
}
io->mb_h = y_end - io->mb_y;
io->put(io);
}
// rotate top samples
if (dec->mb_y_ < dec->mb_h_ - 1) {
memcpy(ydst, ydst + 16 * dec->cache_y_stride_, ysize);
memcpy(udst, udst + 8 * dec->cache_uv_stride_, uvsize);
memcpy(vdst, vdst + 8 * dec->cache_uv_stride_, uvsize);
}
}
//-----------------------------------------------------------------------------
// Main reconstruction function.
static const int kScan[16] = {
0 + 0 * BPS, 4 + 0 * BPS, 8 + 0 * BPS, 12 + 0 * BPS,
0 + 4 * BPS, 4 + 4 * BPS, 8 + 4 * BPS, 12 + 4 * BPS,
0 + 8 * BPS, 4 + 8 * BPS, 8 + 8 * BPS, 12 + 8 * BPS,
0 + 12 * BPS, 4 + 12 * BPS, 8 + 12 * BPS, 12 + 12 * BPS
};
static inline int CheckMode(VP8Decoder* const dec, int mode) {
if (mode == B_DC_PRED) {
if (dec->mb_x_ == 0) {
return (dec->mb_y_ == 0) ? B_DC_PRED_NOTOPLEFT : B_DC_PRED_NOLEFT;
} else {
return (dec->mb_y_ == 0) ? B_DC_PRED_NOTOP : B_DC_PRED;
}
}
return mode;
}
static inline void Copy32b(uint8_t* dst, uint8_t* src) {
*(uint32_t*)dst = *(uint32_t*)src;
}
void VP8ReconstructBlock(VP8Decoder* const dec) {
uint8_t* const y_dst = dec->yuv_b_ + Y_OFF;
uint8_t* const u_dst = dec->yuv_b_ + U_OFF;
uint8_t* const v_dst = dec->yuv_b_ + V_OFF;
// Rotate in the left samples from previously decoded block. We move four
// pixels at a time for alignment reason, and because of in-loop filter.
if (dec->mb_x_ > 0) {
for (int j = -1; j < 16; ++j) {
Copy32b(&y_dst[j * BPS - 4], &y_dst[j * BPS + 12]);
}
for (int j = -1; j < 8; ++j) {
Copy32b(&u_dst[j * BPS - 4], &u_dst[j * BPS + 4]);
Copy32b(&v_dst[j * BPS - 4], &v_dst[j * BPS + 4]);
}
} else {
for (int j = 0; j < 16; ++j) {
y_dst[j * BPS - 1] = 129;
}
for (int j = 0; j < 8; ++j) {
u_dst[j * BPS - 1] = 129;
v_dst[j * BPS - 1] = 129;
}
// Init top-left sample on left column too
if (dec->mb_y_ > 0) {
y_dst[-1 - BPS] = u_dst[-1 - BPS] = v_dst[-1 - BPS] = 129;
}
}
// bring top samples into the cache
uint8_t* const top_y = dec->y_t_ + dec->mb_x_ * 16;
uint8_t* const top_u = dec->u_t_ + dec->mb_x_ * 8;
uint8_t* const top_v = dec->v_t_ + dec->mb_x_ * 8;
if (dec->mb_y_ > 0) {
memcpy(y_dst - BPS, top_y, 16);
memcpy(u_dst - BPS, top_u, 8);
memcpy(v_dst - BPS, top_v, 8);
} else if (dec->mb_x_ == 0) {
// we only need to do this init once at block (0,0).
// Afterward, it remains valid for the whole topmost row.
memset(y_dst - BPS - 1, 127, 16 + 4 + 1);
memset(u_dst - BPS - 1, 127, 8 + 1);
memset(v_dst - BPS - 1, 127, 8 + 1);
}
// predict and add residuals
const int16_t* coeffs = dec->coeffs_;
if (dec->is_i4x4_) { // 4x4
uint32_t* const top_right = (uint32_t*)(y_dst - BPS + 16);
if (dec->mb_y_ > 0) {
if (dec->mb_x_ >= dec->mb_w_ - 1) { // on rightmost border
top_right[0] = top_y[15] * 0x01010101u;
} else {
memcpy(top_right, top_y + 16, sizeof(*top_right));
}
}
// replicate the top-right pixels below
top_right[BPS] = top_right[2 * BPS] = top_right[3 * BPS] = top_right[0];
// predict and add residues for all 4x4 blocks in turn.
for (int n = 0; n < 16; n++) {
uint8_t* const dst = y_dst + kScan[n];
VP8PredLuma4[dec->imodes_[n]](dst);
if (dec->non_zero_ & (1 << n)) {
VP8Transform(coeffs + n * 16, dst);
} else if (dec->non_zero_ & (1 << n)) { // only DC is present
VP8TransformDC(coeffs + n * 16, dst);
}
}
} else { // 16x16
const int pred_func = CheckMode(dec, dec->imodes_[0]);
VP8PredLuma16[pred_func](y_dst);
if (dec->non_zero_) {
for (int n = 0; n < 16; n++) {
uint8_t* const dst = y_dst + kScan[n];
if (dec->non_zero_ac_ & (1 << n)) {
VP8Transform(coeffs + n * 16, dst);
} else if (dec->non_zero_ & (1 << n)) { // only DC is present
VP8TransformDC(coeffs + n * 16, dst);
}
}
}
}
// Chroma
const int pred_func = CheckMode(dec, dec->uvmode_);
VP8PredChroma8[pred_func](u_dst);
VP8PredChroma8[pred_func](v_dst);
if (dec->non_zero_ & 0x0f0000) { // chroma-U
const int16_t* const u_coeffs = dec->coeffs_ + 16 * 16;
if (dec->non_zero_ac_ & 0x0f0000) {
VP8TransformUV(u_coeffs, u_dst);
} else {
VP8TransformDCUV(u_coeffs, u_dst);
}
}
if (dec->non_zero_ & 0xf00000) { // chroma-V
const int16_t* const v_coeffs = dec->coeffs_ + 20 * 16;
if (dec->non_zero_ac_ & 0xf00000) {
VP8TransformUV(v_coeffs, v_dst);
} else {
VP8TransformDCUV(v_coeffs, v_dst);
}
}
// stash away top samples for next block
if (dec->mb_y_ < dec->mb_h_ - 1) {
memcpy(top_y, y_dst + 15 * BPS, 16);
memcpy(top_u, u_dst + 7 * BPS, 8);
memcpy(top_v, v_dst + 7 * BPS, 8);
}
}
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

107
src/quant.c Normal file
View File

@ -0,0 +1,107 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Quantizer initialization
//
// Author: Skal (pascal.massimino@gmail.com)
#include "vp8i.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static inline int clip(int v, int M) {
return v < 0 ? 0 : v > M ? M : v;
}
// Paragraph 14.1
static const uint8_t kDcTable[128] = {
4, 5, 6, 7, 8, 9, 10, 10,
11, 12, 13, 14, 15, 16, 17, 17,
18, 19, 20, 20, 21, 21, 22, 22,
23, 23, 24, 25, 25, 26, 27, 28,
29, 30, 31, 32, 33, 34, 35, 36,
37, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 46, 47, 48, 49, 50,
51, 52, 53, 54, 55, 56, 57, 58,
59, 60, 61, 62, 63, 64, 65, 66,
67, 68, 69, 70, 71, 72, 73, 74,
75, 76, 76, 77, 78, 79, 80, 81,
82, 83, 84, 85, 86, 87, 88, 89,
91, 93, 95, 96, 98, 100, 101, 102,
104, 106, 108, 110, 112, 114, 116, 118,
122, 124, 126, 128, 130, 132, 134, 136,
138, 140, 143, 145, 148, 151, 154, 157
};
static const uint16_t kAcTable[128] = {
4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 60,
62, 64, 66, 68, 70, 72, 74, 76,
78, 80, 82, 84, 86, 88, 90, 92,
94, 96, 98, 100, 102, 104, 106, 108,
110, 112, 14, 116, 119, 122, 125, 128,
131, 134, 37, 140, 143, 146, 149, 152,
155, 158, 161, 164, 167, 170, 173, 177,
181, 185, 189, 193, 197, 201, 205, 209,
213, 217, 221, 225, 229, 234, 239, 245,
249, 254, 259, 264, 269, 274, 279, 284
};
//-----------------------------------------------------------------------------
// Paragraph 9.6
void VP8ParseQuant(VP8Decoder* const dec) {
VP8BitReader* const br = &dec->br_;
const int base_q0 = VP8GetValue(br, 7);
const int dqy1_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dqy2_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dqy2_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dquv_dc = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const int dquv_ac = VP8Get(br) ? VP8GetSignedValue(br, 4) : 0;
const VP8SegmentHeader* const hdr = &dec->segment_hdr_;
for (int i = 0; i < NUM_MB_SEGMENTS; ++i) {
int q;
if (hdr->use_segment_) {
q = hdr->quantizer_[i];
if (!hdr->absolute_delta_) {
q += base_q0;
}
} else {
if (i > 0) {
dec->dqm_[i] = dec->dqm_[0];
continue;
} else {
q = base_q0;
}
}
VP8QuantMatrix* const m = &dec->dqm_[i];
m->y1_mat_[0] = kDcTable[clip(q + dqy1_dc, 127)];
m->y1_mat_[1] = kAcTable[clip(q + 0, 127)];
m->y2_mat_[0] = kDcTable[clip(q + dqy2_dc, 127)] * 2;
// TODO(skal): make it another table?
m->y2_mat_[1] = kAcTable[clip(q + dqy2_ac, 127)] * 155 / 100;
if (m->y2_mat_[1] < 8) m->y2_mat_[1] = 8;
m->uv_mat_[0] = kDcTable[clip(q + dquv_ac, 117)];
m->uv_mat_[1] = kAcTable[clip(q + dquv_dc, 127)];
}
}
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

579
src/tree.c Normal file
View File

@ -0,0 +1,579 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Coding trees and probas
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdio.h>
#include "vp8i.h"
#define USE_GENERIC_TREE
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#ifdef USE_GENERIC_TREE
static const int8_t kYModesIntra4[18] = {
-B_DC_PRED, 1,
-B_TM_PRED, 2,
-B_VE_PRED, 3,
4, 6,
-B_HE_PRED, 5,
-B_RD_PRED, -B_VR_PRED,
-B_LD_PRED, 7,
-B_VL_PRED, 8,
-B_HD_PRED, -B_HU_PRED
};
#endif
#ifndef ONLY_KEYFRAME_CODE
static const int8_t kYModesInter[8] = {
-DC_PRED, 1,
2, 3,
-V_PRED, -H_PRED,
-TM_PRED, -B_PRED
};
static const int8_t kMBSplit[6] = {
-3, 1,
-2, 2,
-0, -1
};
static const int8_t kMVRef[8] = {
-ZEROMV, 1,
-NEARESTMV, 2,
-NEARMV, 3,
-NEWMV, -SPLITMV
};
static const int8_t kMVRef4[6] = {
-LEFT4, 1
-ABOVE4, 2
-ZERO4, -NEW4
};
#endif
//-----------------------------------------------------------------------------
// Default probabilities
// Inter
#ifndef ONLY_KEYFRAME_CODE
static const uint8_t kYModeProbaInter0[4] = { 112, 86, 140, 37 };
static const uint8_t kUVModeProbaInter0[3] = { 162, 101, 204 };
static const uint8_t kMVProba0[2][NUM_MV_PROBAS] = {
{ 162, 128, 225, 146, 172, 147, 214, 39,
156, 128, 129, 132, 75, 145, 178, 206,
239, 254, 254 },
{ 164, 128, 204, 170, 119, 235, 140, 230,
228, 128, 130, 130, 74, 148, 180, 203,
236, 254, 254 }
};
#endif
// Paragraph 13.5
static const uint8_t
CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
// genereated using vp8_default_coef_probs() in entropy.c:129
{ { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{ { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
{ 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
{ 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 }
},
{ { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
{ 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
{ 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
},
{ { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
{ 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
{ 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
},
{ { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
{ 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
{ 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 }
},
{ { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
{ 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
{ 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 }
},
{ { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
{ 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
{ 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 }
},
{ { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
}
},
{ { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
{ 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
{ 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 }
},
{ { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
{ 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
{ 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 }
},
{ { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
{ 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
{ 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 }
},
{ { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
{ 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
{ 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 }
},
{ { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
{ 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
{ 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 }
},
{ { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
{ 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
{ 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 }
},
{ { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
{ 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
{ 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 }
},
{ { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
{ 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 }
}
},
{ { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
{ 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
{ 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 }
},
{ { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
{ 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
{ 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 }
},
{ { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
{ 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
{ 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 }
},
{ { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
{ 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 }
},
{ { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
{ 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{ { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{ { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
{ 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
},
{ { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
}
},
{ { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
{ 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
{ 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 }
},
{ { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
{ 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
{ 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 }
},
{ { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
{ 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
{ 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 }
},
{ { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
{ 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
{ 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 }
},
{ { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
{ 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
{ 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 }
},
{ { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
{ 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
{ 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 }
},
{ { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
{ 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
{ 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 }
},
{ { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
{ 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
}
}
};
// Paragraph 11.5
static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
// genereated using vp8_kf_default_bmode_probs()
{ { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
{ 152, 179, 64, 126, 170, 118, 46, 70, 95 },
{ 175, 69, 143, 80, 85, 82, 72, 155, 103 },
{ 56, 58, 10, 171, 218, 189, 17, 13, 152 },
{ 144, 71, 10, 38, 171, 213, 144, 34, 26 },
{ 114, 26, 17, 163, 44, 195, 21, 10, 173 },
{ 121, 24, 80, 195, 26, 62, 44, 64, 85 },
{ 170, 46, 55, 19, 136, 160, 33, 206, 71 },
{ 63, 20, 8, 114, 114, 208, 12, 9, 226 },
{ 81, 40, 11, 96, 182, 84, 29, 16, 36 } },
{ { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
{ 72, 187, 100, 130, 157, 111, 32, 75, 80 },
{ 66, 102, 167, 99, 74, 62, 40, 234, 128 },
{ 41, 53, 9, 178, 241, 141, 26, 8, 107 },
{ 104, 79, 12, 27, 217, 255, 87, 17, 7 },
{ 74, 43, 26, 146, 73, 166, 49, 23, 157 },
{ 65, 38, 105, 160, 51, 52, 31, 115, 128 },
{ 87, 68, 71, 44, 114, 51, 15, 186, 23 },
{ 47, 41, 14, 110, 182, 183, 21, 17, 194 },
{ 66, 45, 25, 102, 197, 189, 23, 18, 22 } },
{ { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
{ 43, 97, 183, 117, 85, 38, 35, 179, 61 },
{ 39, 53, 200, 87, 26, 21, 43, 232, 171 },
{ 56, 34, 51, 104, 114, 102, 29, 93, 77 },
{ 107, 54, 32, 26, 51, 1, 81, 43, 31 },
{ 39, 28, 85, 171, 58, 165, 90, 98, 64 },
{ 34, 22, 116, 206, 23, 34, 43, 166, 73 },
{ 68, 25, 106, 22, 64, 171, 36, 225, 114 },
{ 34, 19, 21, 102, 132, 188, 16, 76, 124 },
{ 62, 18, 78, 95, 85, 57, 50, 48, 51 } },
{ { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
{ 60, 148, 31, 172, 219, 228, 21, 18, 111 },
{ 112, 113, 77, 85, 179, 255, 38, 120, 114 },
{ 40, 42, 1, 196, 245, 209, 10, 25, 109 },
{ 100, 80, 8, 43, 154, 1, 51, 26, 71 },
{ 88, 43, 29, 140, 166, 213, 37, 43, 154 },
{ 61, 63, 30, 155, 67, 45, 68, 1, 209 },
{ 142, 78, 78, 16, 255, 128, 34, 197, 171 },
{ 41, 40, 5, 102, 211, 183, 4, 1, 221 },
{ 51, 50, 17, 168, 209, 192, 23, 25, 82 } },
{ { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
{ 95, 84, 53, 89, 128, 100, 113, 101, 45 },
{ 75, 79, 123, 47, 51, 128, 81, 171, 1 },
{ 57, 17, 5, 71, 102, 57, 53, 41, 49 },
{ 115, 21, 2, 10, 102, 255, 166, 23, 6 },
{ 38, 33, 13, 121, 57, 73, 26, 1, 85 },
{ 41, 10, 67, 138, 77, 110, 90, 47, 114 },
{ 101, 29, 16, 10, 85, 128, 101, 196, 26 },
{ 57, 18, 10, 102, 102, 213, 34, 20, 43 },
{ 117, 20, 15, 36, 163, 128, 68, 1, 26 } },
{ { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
{ 67, 87, 58, 169, 82, 115, 26, 59, 179 },
{ 63, 59, 90, 180, 59, 166, 93, 73, 154 },
{ 40, 40, 21, 116, 143, 209, 34, 39, 175 },
{ 57, 46, 22, 24, 128, 1, 54, 17, 37 },
{ 47, 15, 16, 183, 34, 223, 49, 45, 183 },
{ 46, 17, 33, 183, 6, 98, 15, 32, 183 },
{ 65, 32, 73, 115, 28, 128, 23, 128, 205 },
{ 40, 3, 9, 115, 51, 192, 18, 6, 223 },
{ 87, 37, 9, 115, 59, 77, 64, 21, 47 } },
{ { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
{ 64, 90, 70, 205, 40, 41, 23, 26, 57 },
{ 54, 57, 112, 184, 5, 41, 38, 166, 213 },
{ 30, 34, 26, 133, 152, 116, 10, 32, 134 },
{ 75, 32, 12, 51, 192, 255, 160, 43, 51 },
{ 39, 19, 53, 221, 26, 114, 32, 73, 255 },
{ 31, 9, 65, 234, 2, 15, 1, 118, 73 },
{ 88, 31, 35, 67, 102, 85, 55, 186, 85 },
{ 56, 21, 23, 111, 59, 205, 45, 37, 192 },
{ 55, 38, 70, 124, 73, 102, 1, 34, 98 } },
{ { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
{ 69, 60, 71, 38, 73, 119, 28, 222, 37 },
{ 68, 45, 128, 34, 1, 47, 11, 245, 171 },
{ 62, 17, 19, 70, 146, 85, 55, 62, 70 },
{ 75, 15, 9, 9, 64, 255, 184, 119, 16 },
{ 37, 43, 37, 154, 100, 163, 85, 160, 1 },
{ 63, 9, 92, 136, 28, 64, 32, 201, 85 },
{ 86, 6, 28, 5, 64, 255, 25, 248, 1 },
{ 56, 8, 17, 132, 137, 255, 55, 116, 128 },
{ 58, 15, 20, 82, 135, 57, 26, 121, 40 } },
{ { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
{ 51, 103, 44, 131, 131, 123, 31, 6, 158 },
{ 86, 40, 64, 135, 148, 224, 45, 183, 128 },
{ 22, 26, 17, 131, 240, 154, 14, 1, 209 },
{ 83, 12, 13, 54, 192, 255, 68, 47, 28 },
{ 45, 16, 21, 91, 64, 222, 7, 1, 197 },
{ 56, 21, 39, 155, 60, 138, 23, 102, 213 },
{ 85, 26, 85, 85, 128, 128, 32, 146, 171 },
{ 18, 11, 7, 63, 144, 171, 4, 4, 246 },
{ 35, 27, 10, 146, 174, 171, 12, 26, 128 } },
{ { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
{ 85, 126, 47, 87, 176, 51, 41, 20, 32 },
{ 101, 75, 128, 139, 118, 146, 116, 128, 85 },
{ 56, 41, 15, 176, 236, 85, 37, 9, 62 },
{ 146, 36, 19, 30, 171, 255, 97, 27, 20 },
{ 71, 30, 17, 119, 118, 255, 17, 18, 138 },
{ 101, 38, 60, 138, 55, 70, 43, 26, 142 },
{ 138, 45, 61, 62, 219, 1, 81, 188, 64 },
{ 32, 41, 20, 117, 151, 142, 20, 21, 163 },
{ 112, 19, 12, 61, 195, 128, 48, 4, 24 } }
};
void VP8ResetProba(VP8Proba* const proba) {
memset(proba->segments_, 255u, sizeof(proba->segments_));
memcpy(proba->coeffs_, CoeffsProba0, sizeof(CoeffsProba0));
#ifndef ONLY_KEYFRAME_CODE
memcpy(proba->mv_, kMVProba0, sizeof(kMVProba0));
memcpy(proba->ymode_, kYModeProbaInter0, sizeof(kYModeProbaInter0));
memcpy(proba->uvmode_, kUVModeProbaInter0, sizeof(kYModeProbaInter0));
#endif
}
void VP8ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec) {
uint8_t* const top = dec->intra_t_ + 4 * dec->mb_x_;
uint8_t* const left = dec->intra_l_;
// Hardcoded 16x16 intra-mode decision tree.
dec->is_i4x4_ = !VP8GetBit(br, 145); // decide for B_PRED first
if (!dec->is_i4x4_) {
const int ymode =
VP8GetBit(br, 156) ? (VP8GetBit(br, 128) ? TM_PRED : H_PRED)
: (VP8GetBit(br, 163) ? V_PRED : DC_PRED);
dec->imodes_[0] = ymode;
memset(top, ymode, 4 * sizeof(top[0]));
memset(left, ymode, 4 * sizeof(left[0]));
} else {
uint8_t* modes = dec->imodes_;
for (int y = 0; y < 4; ++y) {
int ymode = left[y];
for (int x = 0; x < 4; ++x) {
const uint8_t* const prob = kBModesProba[top[x]][ymode];
#ifdef USE_GENERIC_TREE
// Generic tree-parsing
int i = 0;
do {
i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i])];
} while (i > 0);
ymode = -i;
#else
// Hardcoded tree parsing
ymode = !VP8GetBit(br, prob[0]) ? B_DC_PRED :
!VP8GetBit(br, prob[1]) ? B_TM_PRED :
!VP8GetBit(br, prob[2]) ? B_VE_PRED :
!VP8GetBit(br, prob[3]) ?
(!VP8GetBit(br, prob[4]) ? B_HE_PRED :
(!VP8GetBit(br, prob[5]) ? B_RD_PRED : B_VR_PRED)) :
(!VP8GetBit(br, prob[6]) ? B_LD_PRED :
(!VP8GetBit(br, prob[7]) ? B_VL_PRED :
(!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED)));
#endif // USE_GENERIC_TREE
top[x] = ymode;
*modes++ = ymode;
}
left[y] = ymode;
}
}
// Hardcoded UVMode decision tree
dec->uvmode_ = !VP8GetBit(br, 142) ? DC_PRED
: !VP8GetBit(br, 114) ? V_PRED
: VP8GetBit(br, 183) ? TM_PRED : H_PRED;
}
//-----------------------------------------------------------------------------
// Paragraph 13
static const uint8_t
CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
{ { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{ { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
{ 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 }
},
{ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{ { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 }
},
{ { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
},
{ { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
{ 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
},
{ { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
{ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
}
}
};
#ifndef ONLY_KEYFRAME_CODE
static const uint8_t MVUpdateProba[2][NUM_MV_PROBAS] = {
{ 237, 246, 253, 253, 254, 254, 254, 254,
254, 254, 254, 254, 254, 254, 250, 250,
252, 254, 254 },
{ 231, 243, 245, 253, 254, 254, 254, 254,
254, 254, 254, 254, 254, 254, 251, 251,
254, 254, 254 }
};
#endif
// Paragraph 9.9
void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
VP8Proba* const proba = &dec->proba_;
for (int t = 0; t < NUM_TYPES; ++t) {
for (int b = 0; b < NUM_BANDS; ++b) {
for (int c = 0; c < NUM_CTX; ++c) {
for (int p = 0; p < NUM_PROBAS; ++p) {
if (VP8GetBit(br, CoeffsUpdateProba[t][b][c][p])) {
proba->coeffs_[t][b][c][p] = VP8GetValue(br, 8);
}
}
}
}
}
dec->use_skip_proba_ = VP8Get(br);
if (dec->use_skip_proba_) {
dec->skip_p_ = VP8GetValue(br, 8);
}
#ifndef ONLY_KEYFRAME_CODE
if (!dec->frm_hdr_.key_frame_) {
dec->intra_p_ = VP8GetValue(br, 8);
dec->last_p_ = VP8GetValue(br, 8);
dec->golden_p_ = VP8GetValue(br, 8);
if (VP8Get(br)) { // update y-mode
for (int i = 0; i < 4; ++i) {
proba->ymode_[i] = VP8GetValue(br, 8);
}
}
if (VP8Get(br)) { // update uv-mode
for (int i = 0; i < 3; ++i) {
proba->uvmode_[i] = VP8GetValue(br, 8);
}
}
// update MV
for (int d = 0; d < 2; ++d) {
for (int k = 0; k < NUM_MV_PROBAS; ++k) {
if (VP8GetBit(br, MVUpdateProba[d][k])) {
const int v = VP8GetValue(br, 7);
proba->mv_[d][k] = v ? v << 1 : 1;
}
}
}
}
#endif
}
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

600
src/vp8.c Normal file
View File

@ -0,0 +1,600 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// main entry for the decoder
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
#include "vp8i.h"
//-----------------------------------------------------------------------------
// VP8Decoder
static void SetOk(VP8Decoder* const dec) {
dec->status_ = 0;
dec->error_msg_ = "OK";
}
void VP8InitIo(VP8Io* const io) {
if (io) {
memset(io, 0, sizeof(*io));
}
}
VP8Decoder* VP8New() {
VP8Decoder* dec = (VP8Decoder*)calloc(1, sizeof(VP8Decoder));
if (dec) {
SetOk(dec);
dec->ready_ = 0;
}
return dec;
}
int VP8Status(VP8Decoder* const dec) {
if (!dec) return 2;
return dec->status_;
}
const char* VP8StatusMessage(VP8Decoder* const dec) {
if (!dec) return "no object";
if (!dec->error_msg_) return "OK";
return dec->error_msg_;
}
void VP8Delete(VP8Decoder* const dec) {
if (dec) {
VP8Clear(dec);
free(dec);
}
}
int VP8SetError(VP8Decoder* const dec, int error, const char *msg) {
dec->status_ = error;
dec->error_msg_ = msg;
dec->ready_ = 0;
return 0;
}
//-----------------------------------------------------------------------------
// Header parsing
static void ResetSegmentHeader(VP8SegmentHeader* const hdr) {
assert(hdr);
hdr->use_segment_ = 0;
hdr->update_map_ = 0;
hdr->absolute_delta_ = 1;
memset(hdr->quantizer_, 0, sizeof(hdr->quantizer_));
memset(hdr->filter_strength_, 0, sizeof(hdr->filter_strength_));
}
// Paragraph 9.3
static int ParseSegmentHeader(VP8BitReader* br,
VP8SegmentHeader* hdr, VP8Proba* proba) {
assert(br);
assert(hdr);
hdr->use_segment_ = VP8Get(br);
if (hdr->use_segment_) {
hdr->update_map_ = VP8Get(br);
const int update_data = VP8Get(br);
if (update_data) {
hdr->absolute_delta_ = VP8Get(br);
for (int s = 0; s < NUM_MB_SEGMENTS; ++s) {
hdr->quantizer_[s] = VP8Get(br) ? VP8GetSignedValue(br, 7) : 0;
}
for (int s = 0; s < NUM_MB_SEGMENTS; ++s) {
hdr->filter_strength_[s] = VP8Get(br) ? VP8GetSignedValue(br, 6) : 0;
}
}
if (hdr->update_map_) {
for (int s = 0; s < MB_FEATURE_TREE_PROBS; ++s) {
proba->segments_[s] = VP8Get(br) ? VP8GetValue(br, 8) : 255u;
}
}
} else {
hdr->update_map_ = 0;
}
return 1;
}
// Paragraph 9.5
static int ParsePartitions(VP8Decoder* const dec,
const uint8_t* buf, uint32_t size) {
VP8BitReader* const br = &dec->br_;
dec->num_parts_ = 1 << VP8GetValue(br, 2);
const uint8_t* sz = buf;
const int last_part = dec->num_parts_ - 1;
uint32_t offset = last_part * 3;
if (size <= offset) {
return 0;
}
for (int p = 0; p < last_part; ++p) {
const uint32_t psize = sz[0] | (sz[1] << 8) | (sz[2] << 16);
if (offset + psize > size) {
return 0;
}
VP8Init(dec->parts_ + p, buf + offset, psize);
offset += psize;
sz += 3;
}
size -= offset;
VP8Init(dec->parts_ + last_part, buf + offset, size);
return 1;
}
// Paragraph 9.4
static int ParseFilterHeader(VP8BitReader* br, VP8Decoder* const dec) {
VP8FilterHeader* const hdr = &dec->filter_hdr_;
hdr->simple_ = VP8Get(br);
hdr->level_ = VP8GetValue(br, 6);
hdr->sharpness_ = VP8GetValue(br, 3);
hdr->use_lf_delta_ = VP8Get(br);
if (hdr->use_lf_delta_) {
if (VP8Get(br)) { // update lf-delta?
for (int i = 0; i < NUM_REF_LF_DELTAS; ++i) {
if (VP8Get(br)) {
hdr->ref_lf_delta_[i] = VP8GetSignedValue(br, 6);
}
}
for (int i = 0; i < NUM_MODE_LF_DELTAS; ++i) {
if (VP8Get(br)) {
hdr->mode_lf_delta_[i] = VP8GetSignedValue(br, 6);
}
}
}
}
dec->filter_type_ = (hdr->level_ == 0) ? 0 : hdr->simple_ ? 1 : 2;
if (dec->filter_type_ > 0) { // precompute filter levels per segment
if (dec->segment_hdr_.use_segment_) {
for (int s = 0; s < NUM_MB_SEGMENTS; ++s) {
int strength = dec->segment_hdr_.filter_strength_[s];
if (!dec->segment_hdr_.absolute_delta_) {
strength += hdr->level_;
}
dec->filter_levels_[s] = strength;
}
} else {
dec->filter_levels_[0] = hdr->level_;
}
}
return 1;
}
static inline uint32_t get_le32(const uint8_t* const data) {
return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
}
// Topmost call
int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io) {
if (dec == NULL) {
return 0;
}
SetOk(dec);
if (io == NULL || io->data == NULL || io->data_size <= 4) {
return VP8SetError(dec, 2, "null VP8Io passed to VP8GetHeaders()");
}
const uint8_t* buf = io->data;
uint32_t buf_size = io->data_size;
if (buf_size < 4) {
return VP8SetError(dec, 2, "Not enough data to parse frame header");
}
// Skip over valid RIFF headers
if (!memcmp(buf, "RIFF", 4)) {
if (buf_size < 20 + 4) {
return VP8SetError(dec, 2, "RIFF: Truncated header.");
}
if (memcmp(buf + 8, "WEBP", 4)) { // wrong image file signature
return VP8SetError(dec, 2, "RIFF: WEBP signature not found.");
}
const uint32_t riff_size = get_le32(buf + 4);
if (memcmp(buf + 12, "VP8 ", 4)) {
return VP8SetError(dec, 2, "RIFF: Invalid compression format.");
}
const uint32_t chunk_size = get_le32(buf + 16);
if ((chunk_size > riff_size + 8) || (chunk_size & 1)) {
return VP8SetError(dec, 2, "RIFF: Inconsistent size information.");
}
buf += 20;
buf_size -= 20;
}
// Paragraph 9.1
VP8FrameHeader* const frm_hdr = &dec->frm_hdr_;
const uint32_t bits = buf[0] | (buf[1] << 8) | (buf[2] << 16);
frm_hdr->key_frame_ = !(bits & 1);
frm_hdr->profile_ = (bits >> 1) & 7;
frm_hdr->show_ = (bits >> 4) & 1;
frm_hdr->partition_length_ = (bits >> 5);
buf += 3;
buf_size -= 3;
VP8PictureHeader* const pic_hdr = &dec->pic_hdr_;
if (frm_hdr->key_frame_) {
// Paragraph 9.2
if (buf_size < 7) {
return VP8SetError(dec, 2, "cannot parse picture header");
}
if (buf[0] != 0x9d || buf[1] != 0x01 || buf[2] != 0x2a) {
return VP8SetError(dec, 2, "Bad code word");
}
pic_hdr->width_ = ((buf[4] << 8) | buf[3]) & 0x3fff;
pic_hdr->xscale_ = buf[4] >> 6; // ratio: 1, 5/4 5/3 or 2
pic_hdr->height_ = ((buf[6] << 8) | buf[5]) & 0x3fff;
pic_hdr->yscale_ = buf[6] >> 6;
buf += 7;
buf_size -= 7;
dec->mb_w_ = (pic_hdr->width_ + 15) >> 4;
dec->mb_h_ = (pic_hdr->height_ + 15) >> 4;
io->width = pic_hdr->width_;
io->height = pic_hdr->height_;
VP8ResetProba(&dec->proba_);
ResetSegmentHeader(&dec->segment_hdr_);
dec->segment_ = 0; // default for intra
}
VP8BitReader* const br = &dec->br_;
VP8Init(br, buf, buf_size);
buf += frm_hdr->partition_length_;
buf_size -= frm_hdr->partition_length_;
if (frm_hdr->key_frame_) {
pic_hdr->colorspace_ = VP8Get(br);
pic_hdr->clamp_type_ = VP8Get(br);
}
if (!ParseSegmentHeader(br, &dec->segment_hdr_, &dec->proba_)) {
return VP8SetError(dec, 2, "cannot parse segment header");
}
// Filter specs
if (!ParseFilterHeader(br, dec)) {
return VP8SetError(dec, 2, "cannot parse filter header");
}
if (!ParsePartitions(dec, buf, buf_size)) {
return VP8SetError(dec, 2, "cannot parse partitions");
}
// quantizer change
VP8ParseQuant(dec);
// Frame buffer marking
if (!frm_hdr->key_frame_) {
// Paragraph 9.7
#ifndef ONLY_KEYFRAME_CODE
dec->buffer_flags_ = VP8Get(br) << 0; // update golden
dec->buffer_flags_ |= VP8Get(br) << 1; // update alt ref
if (!(dec->buffer_flags_ & 1)) {
dec->buffer_flags_ |= VP8GetValue(br, 2) << 2;
}
if (!(dec->buffer_flags_ & 2)) {
dec->buffer_flags_ |= VP8GetValue(br, 2) << 4;
}
dec->buffer_flags_ |= VP8Get(br) << 6; // sign bias golden
dec->buffer_flags_ |= VP8Get(br) << 7; // sign bias alt ref
#else
return VP8SetError(dec, 2, "Not a key frame.");
#endif
} else {
dec->buffer_flags_ = 0x003 | 0x100;
}
// Paragraph 9.8
dec->update_proba_ = VP8Get(br);
if (!dec->update_proba_) { // save for later restore
dec->proba_saved_ = dec->proba_;
}
#ifndef ONLY_KEYFRAME_CODE
dec->buffer_flags_ &= 1 << 8;
dec->buffer_flags_ |=
(frm_hdr->key_frame_ || VP8Get(br)) << 8; // refresh last frame
#endif
VP8ParseProba(br, dec);
// sanitized state
dec->ready_ = 1;
return 1;
}
//-----------------------------------------------------------------------------
// Residual decoding (Paragraph 13.2 / 13.3)
static const uint8_t kBands[16 + 1] = {
0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7,
0 // extra entry as sentinel
};
static const uint8_t kCat3[] = {173, 148, 140, 0};
static const uint8_t kCat4[] = {176, 155, 140, 135, 0};
static const uint8_t kCat5[] = {180, 157, 141, 134, 130, 0};
static const uint8_t kCat6[] =
{254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0};
static const uint8_t * const kCat3456[] = { kCat3, kCat4, kCat5, kCat6 };
static const uint8_t kZigzag[16] = {
0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15
};
typedef const uint8_t PROBA_ARRAY[NUM_CTX][NUM_PROBAS];
static int GetCoeffs(VP8BitReader* const br,
const uint8_t (*prob)[NUM_CTX][NUM_PROBAS],
int ctx, const uint16_t dq[2], int n, int16_t* out) {
const uint8_t* p = prob[kBands[n]][ctx];
if (!VP8GetBit(br, p[0])) { // first EOB is more a 'CBP' bit.
return -1;
}
while (1) {
++n;
if (!VP8GetBit(br, p[1])) {
p = prob[kBands[n]][0];
} else { // non zero coeff
int v;
if (!VP8GetBit(br, p[2])) {
p = prob[kBands[n]][1];
v = 1;
} else {
if (!VP8GetBit(br, p[3])) {
if (!VP8GetBit(br, p[4])) {
v = 2;
} else {
v = 3 + VP8GetBit(br, p[5]);
}
} else {
if (!VP8GetBit(br, p[6])) {
if (!VP8GetBit(br, p[7])) {
v = 5 + VP8GetBit(br, 159);
} else {
v = 7 + 2 * VP8GetBit(br, 165) + VP8GetBit(br, 145);
}
} else {
const int bit1 = VP8GetBit(br, p[8]);
const int bit0 = VP8GetBit(br, p[9 + bit1]);
const int cat = 2 * bit1 + bit0;
v = 0;
for (const uint8_t* tab = kCat3456[cat]; *tab; ++tab) {
v += v + VP8GetBit(br, *tab);
}
v += 3 + (8 << cat);
}
}
p = prob[kBands[n]][2];
}
const int j = kZigzag[n - 1];
out[j] = VP8GetSigned(br, v) * dq[j > 0];
if (n == 16) break;
if (!VP8GetBit(br, p[0])) { // EOB
return n;
}
}
}
return 15;
}
// Table to unpack four bits into four bytes
static const uint8_t kUnpackTab[16][4] = {
{0, 0, 0, 0}, {1, 0, 0, 0}, {0, 1, 0, 0}, {1, 1, 0, 0},
{0, 0, 1, 0}, {1, 0, 1, 0}, {0, 1, 1, 0}, {1, 1, 1, 0},
{0, 0, 0, 1}, {1, 0, 0, 1}, {0, 1, 0, 1}, {1, 1, 0, 1},
{0, 0, 1, 1}, {1, 0, 1, 1}, {0, 1, 1, 1}, {1, 1, 1, 1} };
// Macro to pack four LSB of four bytes into four bits.
#define PACK(X, S) \
((((*(uint32_t*)(X)) * 0x01020408U) & 0xff000000) >> (S))
typedef const uint8_t (*Proba_t)[NUM_CTX][NUM_PROBAS]; // for const-casting
static int ParseResiduals(VP8Decoder* const dec,
VP8MB* const mb, VP8BitReader* const token_br) {
int out_t_nz, out_l_nz, first;
Proba_t ac_prob;
const VP8QuantMatrix* q = &dec->dqm_[dec->segment_];
int16_t* dst = dec->coeffs_;
VP8MB* const left_mb = dec->mb_info_ - 1;
memset(dst, 0, 384 * sizeof(*dst));
if (!dec->is_i4x4_) { // parse DC
int16_t dc[16] = { 0 };
const int ctx = mb->dc_nz_ + left_mb->dc_nz_;
const int last = GetCoeffs(token_br, (Proba_t)dec->proba_.coeffs_[1],
ctx, q->y2_mat_, 0, dc);
mb->dc_nz_ = left_mb->dc_nz_ = (last >= 0);
first = 1;
ac_prob = (Proba_t)dec->proba_.coeffs_[0];
VP8TransformWHT(dc, dst);
} else {
first = 0;
ac_prob = (Proba_t)dec->proba_.coeffs_[3];
}
uint8_t nz_ac[4], nz_dc[4];
uint32_t non_zero_ac = 0;
uint32_t non_zero_dc = 0;
uint8_t tnz[4], lnz[4];
memcpy(tnz, kUnpackTab[mb->nz_ & 0xf], sizeof(tnz));
memcpy(lnz, kUnpackTab[left_mb->nz_ & 0xf], sizeof(lnz));
for (int y = 0; y < 4; ++y) {
int l = lnz[y];
for (int x = 0; x < 4; ++x) {
const int ctx = l + tnz[x];
const int last = GetCoeffs(token_br, ac_prob, ctx,
q->y1_mat_, first, dst);
nz_dc[x] = (dst[0] != 0);
nz_ac[x] = (last > 0);
tnz[x] = l = (last >= 0);
dst += 16;
}
lnz[y] = l;
non_zero_dc |= PACK(nz_dc, 24 - y * 4);
non_zero_ac |= PACK(nz_ac, 24 - y * 4);
}
out_t_nz = PACK(tnz, 24);
out_l_nz = PACK(lnz, 24);
memcpy(tnz, kUnpackTab[mb->nz_ >> 4], sizeof(tnz));
memcpy(lnz, kUnpackTab[left_mb->nz_ >> 4], sizeof(lnz));
for (int ch = 0; ch < 4; ch += 2) {
for (int y = 0; y < 2; ++y) {
int l = lnz[ch + y];
for (int x = 0; x < 2; ++x) {
const int ctx = l + tnz[ch + x];
const int last =
GetCoeffs(token_br, (Proba_t)dec->proba_.coeffs_[2],
ctx, q->uv_mat_, 0, dst);
nz_dc[y * 2 + x] = (dst[0] != 0);
nz_ac[y * 2 + x] = (last > 0);
tnz[ch + x] = l = (last >= 0);
dst += 16;
}
lnz[ch + y] = l;
}
non_zero_dc |= PACK(nz_dc, 8 - ch * 2);
non_zero_ac |= PACK(nz_ac, 8 - ch * 2);
}
out_t_nz |= PACK(tnz, 20);
out_l_nz |= PACK(lnz, 20);
mb->nz_ = out_t_nz;
left_mb->nz_ = out_l_nz;
dec->non_zero_ac_ = non_zero_ac;
dec->non_zero_ = non_zero_ac | non_zero_dc;
mb->skip_ = !dec->non_zero_;
return 1;
}
#undef PACK
//-----------------------------------------------------------------------------
// Main loop
static void SendBlock(VP8Decoder* const dec, VP8Io* io) {
if (io->put) {
io->mb_x = dec->mb_x_ * 16;
io->mb_y = dec->mb_y_ * 16;
io->mb_w = io->width - io->mb_x;
io->mb_h = io->height - io->mb_y;
if (io->mb_w > 16) io->mb_w = 16;
if (io->mb_h > 16) io->mb_h = 16;
io->put(io);
}
}
static int ParseFrame(VP8Decoder* const dec, VP8Io* io) {
int ok = 1;
VP8BitReader* const br = &dec->br_;
for (dec->mb_y_ = 0; dec->mb_y_ < dec->mb_h_; ++dec->mb_y_) {
memset(dec->intra_l_, B_DC_PRED, sizeof(dec->intra_l_));
VP8MB* const left = dec->mb_info_ - 1;
left->nz_ = 0;
left->dc_nz_ = 0;
VP8BitReader* token_br = &dec->parts_[dec->mb_y_ & (dec->num_parts_ - 1)];
for (dec->mb_x_ = 0; dec->mb_x_ < dec->mb_w_; dec->mb_x_++) {
VP8MB* const info = dec->mb_info_ + dec->mb_x_;
// Note: we don't save segment map (yet), as we don't expect
// to decode more than 1 keyframe.
if (dec->segment_hdr_.update_map_) {
// Hardcoded tree parsing
dec->segment_ = !VP8GetBit(br, dec->proba_.segments_[0]) ?
VP8GetBit(br, dec->proba_.segments_[1]) :
2 + VP8GetBit(br, dec->proba_.segments_[2]);
}
info->skip_ = dec->use_skip_proba_ ? VP8GetBit(br, dec->skip_p_) : 0;
VP8ParseIntraMode(br, dec);
if (!info->skip_) {
if (!ParseResiduals(dec, info, token_br)) {
ok = 0;
break;
}
} else {
left->nz_ = info->nz_ = 0;
if (!dec->is_i4x4_) {
left->dc_nz_ = info->dc_nz_ = 0;
}
dec->non_zero_ = 0;
dec->non_zero_ac_ = 0;
}
VP8ReconstructBlock(dec);
// Store filter params
if (dec->filter_type_ > 0) {
VP8StoreBlock(dec);
} else { // We're done. Send block to user at once.
SendBlock(dec, io);
}
}
if (!ok) {
break;
}
if (dec->filter_type_ > 0) { // filter a row
VP8FilterRow(dec, io);
}
if (dec->br_.eof_ || token_br->eof_) {
ok = 0;
break;
}
}
// Finish
if (!dec->update_proba_) {
dec->proba_ = dec->proba_saved_;
}
return ok;
}
// Main entry point
int VP8Decode(VP8Decoder* const dec, VP8Io* const io) {
if (dec == NULL) {
return 0;
}
if (io == NULL) {
return VP8SetError(dec, 2, "NULL VP8Io parameter in VP8Decode().");
}
if (!dec->ready_) {
if (!VP8GetHeaders(dec, io)) {
return 0;
}
}
assert(dec->ready_);
// will allocate memory and prepare everything.
if (!VP8InitFrame(dec, io)) {
VP8Clear(dec);
return VP8SetError(dec, 3, "Allocation failed");
}
// set-up
if (io->setup) io->setup(io);
// Main decoding loop
if (!ParseFrame(dec, io)) {
VP8Clear(dec);
return VP8SetError(dec, 3, "Frame decoding failed");
}
// tear-down
if (io->teardown) io->teardown(io);
dec->ready_ = 0;
return 1;
}
void VP8Clear(VP8Decoder* const dec) {
if (dec == NULL) {
return;
}
if (dec->mem_) {
free(dec->mem_);
}
dec->mem_ = NULL;
dec->mem_size_ = 0;
memset(&dec->br_, 0, sizeof(dec->br_));
dec->ready_ = 0;
}

318
src/vp8i.h Normal file
View File

@ -0,0 +1,318 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// VP8 decoder: internal header.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_DECODE_VP8I_H_
#define WEBP_DECODE_VP8I_H_
#include <string.h> // for memcpy()
#include "bits.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// Various defines and enums
#define ONLY_KEYFRAME_CODE // to remove any code related to P-Frames
// intra prediction modes
enum { B_DC_PRED = 0, // 4x4 modes
B_TM_PRED,
B_VE_PRED,
B_HE_PRED,
B_LD_PRED,
B_RD_PRED,
B_VR_PRED,
B_VL_PRED,
B_HD_PRED,
B_HU_PRED,
NUM_BMODES = B_HU_PRED + 1 - B_DC_PRED, // = 10
// Luma16 or UV modes
DC_PRED = B_DC_PRED, V_PRED = B_VE_PRED,
H_PRED = B_HE_PRED, TM_PRED = B_TM_PRED,
B_PRED = NUM_BMODES, // refined I4x4 mode
// special modes
B_DC_PRED_NOTOP = 4,
B_DC_PRED_NOLEFT = 5,
B_DC_PRED_NOTOPLEFT = 6 };
#ifndef ONLY_KEYFRAME_CODE
// inter prediction modes
enum {
LEFT4 = 0, ABOVE4 = 1, ZERO4 = 2, NEW4 = 3,
NEARESTMV, NEARMV, ZEROMV, NEWMV, SPLITMV };
#endif
enum { MB_FEATURE_TREE_PROBS = 3,
NUM_MB_SEGMENTS = 4,
NUM_REF_LF_DELTAS = 4,
NUM_MODE_LF_DELTAS = 4, // I4x4, ZERO, *, SPLIT
MAX_NUM_PARTITIONS = 8,
// Probabilities
NUM_TYPES = 4,
NUM_BANDS = 8,
NUM_CTX = 3,
NUM_PROBAS = 11,
NUM_MV_PROBAS = 19 };
// YUV-cache parameters.
// Constraints are: We need to store one 16x16 block of luma samples (y),
// and two 8x8 chroma blocks (u/v). These are better be 16-bytes aligned,
// in order to be SIMD-friendly. We also need to store the top, left and
// top-left samples (from previously decoded blocks), along with four
// extra top-right samples for luma (intra4x4 prediction only).
// One possible layout is, using 32 * (17 + 9) bytes:
//
// .+------ <- only 1 pixel high
// .|yyyyt.
// .|yyyyt.
// .|yyyyt.
// .|yyyy..
// .+--.+-- <- only 1 pixel high
// .|uu.|vv
// .|uu.|vv
//
// Every character is a 4x4 block, with legend:
// '.' = unused
// 'y' = y-samples 'u' = u-samples 'v' = u-samples
// '|' = left sample, '-' = top sample, '+' = top-left sample
// 't' = extra top-right sample for 4x4 modes
// With this layout, BPS (=Bytes Per Scan-line) is one cacheline size.
#define BPS 32 // this is the common stride used by yuv[]
#define YUV_SIZE (BPS * 17 + BPS * 9)
#define Y_SIZE (BPS * 17)
#define Y_OFF (BPS * 1 + 8)
#define U_OFF (Y_OFF + BPS * 16 + BPS)
#define V_OFF (U_OFF + 16)
//-----------------------------------------------------------------------------
// Headers
typedef struct {
uint8_t key_frame_;
uint8_t profile_;
uint8_t show_;
uint32_t partition_length_;
} VP8FrameHeader;
typedef struct {
uint16_t width_;
uint16_t height_;
uint8_t xscale_;
uint8_t yscale_;
uint8_t colorspace_; // 0 = YCbCr
uint8_t clamp_type_;
} VP8PictureHeader;
// segment features
typedef struct {
int use_segment_;
int update_map_; // whether to update the segment map or not
int absolute_delta_; // absolute or delta values for quantizer and filter
int8_t quantizer_[NUM_MB_SEGMENTS]; // quantization changes
int8_t filter_strength_[NUM_MB_SEGMENTS]; // filter strength for segments
} VP8SegmentHeader;
// Struct collecting all frame-persistent probabilities.
typedef struct {
uint8_t segments_[MB_FEATURE_TREE_PROBS];
// Type: 0:Intra16-AC 1:Intra16-DC 2:Chroma 3:Intra4
uint8_t coeffs_[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS];
#ifndef ONLY_KEYFRAME_CODE
uint8_t ymode_[4], uvmode_[3];
uint8_t mv_[2][NUM_MV_PROBAS];
#endif
} VP8Proba;
// Filter parameters
typedef struct {
int simple_; // 0=complex, 1=simple
int level_; // [0..63]
int sharpness_; // [0..7]
int use_lf_delta_;
int ref_lf_delta_[NUM_REF_LF_DELTAS];
int mode_lf_delta_[NUM_MODE_LF_DELTAS];
} VP8FilterHeader;
//-----------------------------------------------------------------------------
// Informations about the macroblocks.
typedef struct {
// block type
uint8_t skip_:1;
// filter specs
uint8_t f_level_:6; // filter strength: 0..63
uint8_t f_ilevel_:6; // inner limit: 1..63
uint8_t f_inner_:1; // do inner filtering?
// cbp
uint8_t nz_; // non-zero AC/DC coeffs
uint8_t dc_nz_; // non-zero DC coeffs
} VP8MB;
// Dequantization matrices
typedef struct {
uint16_t y1_mat_[2], y2_mat_[2], uv_mat_[2]; // [DC / AC]
} VP8QuantMatrix;
//-----------------------------------------------------------------------------
// VP8Decoder: the main opaque structure handed over to user
struct VP8Decoder {
int status_; // 0 = OK
int ready_; // true if ready to decode a picture with VP8Decode()
const char* error_msg_; // set when status_ is not OK.
// Main data source
VP8BitReader br_;
// headers
VP8FrameHeader frm_hdr_;
VP8PictureHeader pic_hdr_;
VP8FilterHeader filter_hdr_;
VP8SegmentHeader segment_hdr_;
// dimension, in macroblock units.
int mb_w_, mb_h_;
// number of partitions.
int num_parts_;
// per-partition boolean decoders.
VP8BitReader parts_[MAX_NUM_PARTITIONS];
// buffer refresh flags
// bit 0: refresh Gold, bit 1: refresh Alt
// bit 2-3: copy to Gold, bit 4-5: copy to Alt
// bit 6: Gold sign bias, bit 7: Alt sign bias
// bit 8: refresh last frame
uint32_t buffer_flags_;
// dequantization (one set of DC/AC dequant factor per segment)
VP8QuantMatrix dqm_[NUM_MB_SEGMENTS];
// probabilities
VP8Proba proba_, proba_saved_;
int update_proba_;
int use_skip_proba_;
uint8_t skip_p_, intra_p_, last_p_, golden_p_;
// Boundary data cache and persistent buffers.
uint8_t* intra_t_; // top intra modes values: 4 * mb_w_
uint8_t intra_l_[4]; // left intra modes values
uint8_t *y_t_; // top luma samples: 16 * mb_w_
uint8_t *u_t_, *v_t_; // top u/v samples: 8 * mb_w_ each
VP8MB* mb_info_; // contextual macroblock infos (mb_w_ + 1)
uint8_t* yuv_b_; // main block for Y/U/V (size = YUV_SIZE)
int16_t* coeffs_; // 384 coeffs = (16+8+8) * 4*4
uint8_t* cache_y_; // macroblock row for storing unfiltered samples
uint8_t* cache_u_;
uint8_t* cache_v_;
int cache_y_stride_;
int cache_uv_stride_;
// main memory chunk for the above data. Persistent.
void* mem_;
int mem_size_;
// Per macroblock non-persistent infos.
int mb_x_, mb_y_; // current position, in macroblock units
uint8_t is_i4x4_; // true if intra4x4
uint8_t imodes_[16]; // one 16x16 mode (#0) or sixteen 4x4 modes
uint8_t uvmode_; // chroma prediction mode
uint8_t segment_; // block's segment
// bit-wise info about the content of each sub-4x4 blocks: there are 16 bits
// for luma (bits #0->#15), then 4 bits for chroma-u (#16->#19) and 4 bits for
// chroma-v (#20->#23), each corresponding to one 4x4 block in decoding order.
// If the bit is set, the 4x4 block contains some non-zero coefficients.
uint32_t non_zero_;
uint32_t non_zero_ac_;
// Filtering side-info
int filter_type_; // 0=off, 1=simple, 2=complex
uint8_t filter_levels_[NUM_MB_SEGMENTS]; // precalculated per-segment
};
//-----------------------------------------------------------------------------
// internal functions. Not public.
// in vp8.c
int VP8SetError(VP8Decoder* const dec, int error, const char *msg);
// in tree.c
void VP8ResetProba(VP8Proba* const proba);
void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec);
void VP8ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec);
// in quant.c
void VP8ParseQuant(VP8Decoder* const dec);
// in frame.c
int VP8InitFrame(VP8Decoder* const dec, VP8Io* io);
// Predict a block and add residual
void VP8ReconstructBlock(VP8Decoder* const dec);
// Filtering
void VP8StoreBlock(VP8Decoder* const dec);
void VP8FilterRow(VP8Decoder* const dec, VP8Io* io);
// in dsp.c
typedef void (*VP8Idct)(const int16_t* coeffs, uint8_t* dst);
extern VP8Idct VP8Transform;
extern VP8Idct VP8TransformUV;
extern VP8Idct VP8TransformDC;
extern VP8Idct VP8TransformDCUV;
extern void (*VP8TransformWHT)(const int16_t* in, int16_t* out);
// *dst is the destination block, with stride BPS. Boundary samples are
// assumed accessible when needed.
typedef void (*VP8PredFunc)(uint8_t *dst);
extern VP8PredFunc VP8PredLuma16[7];
extern VP8PredFunc VP8PredChroma8[7];
extern VP8PredFunc VP8PredLuma4[11];
void VP8DspInit(); // must be called before anything using the above
void VP8DspInitTables(); // needs to be called no matter what.
// simple filter (only for luma)
typedef void (*VP8SimpleFilterFunc)(uint8_t* p, int stride, int thresh);
extern VP8SimpleFilterFunc VP8SimpleVFilter16;
extern VP8SimpleFilterFunc VP8SimpleHFilter16;
extern VP8SimpleFilterFunc VP8SimpleVFilter16i; // filter 3 inner edges
extern VP8SimpleFilterFunc VP8SimpleHFilter16i;
// regular filter (on both macroblock edges and inner edges)
typedef void (*VP8LumaFilterFunc)(uint8_t* luma, int stride,
int thresh, int ithresh, int hev_t);
typedef void (*VP8ChromaFilterFunc)(uint8_t* u, uint8_t* v, int stride,
int thresh, int ithresh, int hev_t);
// on outter edge
extern VP8LumaFilterFunc VP8VFilter16;
extern VP8LumaFilterFunc VP8HFilter16;
extern VP8ChromaFilterFunc VP8VFilter8;
extern VP8ChromaFilterFunc VP8HFilter8;
// on inner edge
extern VP8LumaFilterFunc VP8VFilter16i; // filtering 3 inner edges altogether
extern VP8LumaFilterFunc VP8HFilter16i;
extern VP8ChromaFilterFunc VP8VFilter8i; // filtering u and v altogether
extern VP8ChromaFilterFunc VP8HFilter8i;
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_DECODE_VP8I_H_

361
src/webp.c Normal file
View File

@ -0,0 +1,361 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Main decoding functions for WEBP images.
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
#include "vp8i.h"
#include "yuv.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// RIFF layout is:
// 0ffset tag
// 0...3 "RIFF" 4-byte tag
// 4...7 size of image data (including metadata) starting at offset 8
// 8...11 "WEBP" our form-type signature
// 12..15 "VP8 ": 4-bytes tags, describing the raw video format used
// 16..19 size of the raw VP8 image data, starting at offset 20
// 20.... the VP8 bytes
// There can be extra chunks after the "VP8 " chunk (ICMT, ICOP, ...)
// All 32-bits sizes are in little-endian order.
// Note: chunk data must be padded to multiple of 2 in size
static inline uint32_t get_le32(const uint8_t* const data) {
return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
}
// If a RIFF container is detected, validate it and skip over it.
static int CheckRIFFHeader(const uint8_t** data_ptr, uint32_t *data_size_ptr) {
uint32_t chunk_size = 0xffffffffu;
if (*data_size_ptr >= 10 + 20 && !memcmp(*data_ptr, "RIFF", 4)) {
if (memcmp(*data_ptr + 8, "WEBP", 4)) {
return 0; // wrong image file signature
}
const uint32_t riff_size = get_le32(*data_ptr + 4);
if (memcmp(*data_ptr + 12, "VP8 ", 4)) {
return 0; // invalid compression format
}
chunk_size = get_le32(*data_ptr + 16);
if ((chunk_size > riff_size + 8) || (chunk_size & 1)) {
return 0; // inconsistent size information.
}
// We have a IFF container. Skip it.
*data_ptr += 20;
*data_size_ptr -= 20;
}
return chunk_size;
}
//-----------------------------------------------------------------------------
typedef enum { MODE_RGB = 0, MODE_RGBA = 1,
MODE_BGR = 2, MODE_BGRA = 3,
MODE_YUV = 4 } CSP_MODE;
typedef struct {
uint8_t* output; // rgb(a) or luma
uint8_t *u, *v;
int stride; // rgb(a) stride or luma stride
int u_stride;
int v_stride;
CSP_MODE mode;
} Params;
static void CustomPut(const VP8Io* io) {
Params *p = (Params*)io->opaque;
const int mb_w = io->mb_w;
const int mb_h = io->mb_h;
if (p->mode == MODE_YUV) {
uint8_t* const y_dst = p->output + io->mb_x + io->mb_y * p->stride;
for (int j = 0; j < mb_h; ++j) {
memcpy(y_dst + j * p->stride, io->y + j * io->y_stride, mb_w);
}
uint8_t* const u_dst = p->u + (io->mb_x / 2) + (io->mb_y / 2) * p->u_stride;
uint8_t* const v_dst = p->v + (io->mb_x / 2) + (io->mb_y / 2) * p->v_stride;
const int uv_w = (mb_w + 1) / 2;
for (int j = 0; j < (mb_h + 1) / 2; ++j) {
memcpy(u_dst + j * p->u_stride, io->u + j * io->uv_stride, uv_w);
memcpy(v_dst + j * p->v_stride, io->v + j * io->uv_stride, uv_w);
}
} else {
const int psize = (p->mode == MODE_RGB || p->mode == MODE_BGR) ? 3 : 4;
uint8_t* dst = p->output + psize * io->mb_x + io->mb_y * p->stride;
for (int j = 0; j < mb_h; ++j) {
const uint8_t* y_src = io->y + j * io->y_stride;
for (int i = 0; i < mb_w; ++i) {
const int y = y_src[i];
const int u = io->u[(j / 2) * io->uv_stride + (i / 2)];
const int v = io->v[(j / 2) * io->uv_stride + (i / 2)];
if (p->mode == MODE_RGB) {
VP8YuvToRgb(y, u, v, dst + i * 3);
} else if (p->mode == MODE_BGR) {
VP8YuvToBgr(y, u, v, dst + i * 3);
} else if (p->mode == MODE_RGBA) {
VP8YuvToRgba(y, u, v, dst + i * 4);
} else {
VP8YuvToBgra(y, u, v, dst + i * 4);
}
}
dst += p->stride;
}
}
}
//-----------------------------------------------------------------------------
// "Into" variants
static uint8_t* DecodeInto(CSP_MODE mode,
const uint8_t* data, uint32_t data_size,
Params* params, int output_size,
int output_u_size, int output_v_size) {
VP8Decoder* dec = VP8New();
if (dec == NULL) {
return NULL;
}
VP8Io io;
VP8InitIo(&io);
io.data = data;
io.data_size = data_size;
params->mode = mode;
io.opaque = params;
io.put = CustomPut;
if (!VP8GetHeaders(dec, &io)) {
VP8Delete(dec);
return NULL;
}
// check output buffers
int ok = 1;
ok &= (params->stride * io.height <= output_size);
if (mode == MODE_RGB || mode == MODE_BGR) {
ok &= (params->stride >= io.width * 3);
} else if (mode == MODE_RGBA || mode == MODE_BGRA) {
ok &= (params->stride >= io.width * 4);
} else {
ok &= (params->stride >= io.width);
// some extra checks for U/V
const int u_size = params->u_stride * ((io.height + 1) / 2);
const int v_size = params->v_stride * ((io.height + 1) / 2);
ok &= (params->u_stride >= (io.width + 1) / 2) &&
(params->v_stride >= (io.width + 1) / 2);
ok &= (u_size <= output_u_size && v_size <= output_v_size);
}
if (!ok) {
VP8Delete(dec);
return NULL;
}
if (mode != MODE_YUV) {
VP8YUVInit();
}
ok = VP8Decode(dec, &io);
VP8Delete(dec);
return ok ? params->output : NULL;
}
uint8_t* WebPDecodeRGBInto(const uint8_t* data, uint32_t data_size,
uint8_t* output, int output_size,
int output_stride) {
if (output == NULL) {
return NULL;
}
Params params;
params.output = output;
params.stride = output_stride;
return DecodeInto(MODE_RGB, data, data_size, &params, output_size, 0, 0);
}
uint8_t* WebPDecodeRGBAInto(const uint8_t* data, uint32_t data_size,
uint8_t* output, int output_size,
int output_stride) {
if (output == NULL) {
return NULL;
}
Params params;
params.output = output;
params.stride = output_stride;
return DecodeInto(MODE_RGBA, data, data_size, &params, output_size, 0, 0);
}
uint8_t* WebPDecodeBGRInto(const uint8_t* data, uint32_t data_size,
uint8_t* output, int output_size,
int output_stride) {
if (output == NULL) {
return NULL;
}
Params params;
params.output = output;
params.stride = output_stride;
return DecodeInto(MODE_BGR, data, data_size, &params, output_size, 0, 0);
}
uint8_t* WebPDecodeBGRAInto(const uint8_t* data, uint32_t data_size,
uint8_t* output, int output_size,
int output_stride) {
if (output == NULL) {
return NULL;
}
Params params;
params.output = output;
params.stride = output_stride;
return DecodeInto(MODE_BGRA, data, data_size, &params, output_size, 0, 0);
}
uint8_t* WebPDecodeYUVInto(const uint8_t* data, uint32_t data_size,
uint8_t* luma, int luma_size, int luma_stride,
uint8_t* u, int u_size, int u_stride,
uint8_t* v, int v_size, int v_stride) {
if (luma == NULL) {
return NULL;
}
Params params;
params.output = luma;
params.stride = luma_stride;
params.u = u;
params.u_stride = u_stride;
params.v = v;
params.v_stride = v_stride;
return DecodeInto(MODE_YUV, data, data_size, &params,
luma_size, u_size, v_size);
}
//-----------------------------------------------------------------------------
static uint8_t* Decode(CSP_MODE mode, const uint8_t* data, uint32_t data_size,
int* width, int* height, Params* params_out) {
int w, h;
if (!WebPGetInfo(data, data_size, &w, &h)) {
return NULL;
}
if (width) *width = w;
if (height) *height = h;
// initialize output buffer, now that dimensions are known.
int stride = (mode == MODE_RGB || mode == MODE_BGR) ? 3 * w
: (mode == MODE_RGBA || mode == MODE_BGRA) ? 4 * w
: w;
const int size = stride * h;
int uv_size = 0;
int uv_stride = 0;
if (mode == MODE_YUV) {
uv_stride = (w + 1) / 2;
uv_size = uv_stride * ((h + 1) / 2);
}
uint8_t* const output = (uint8_t*)malloc(size + 2 * uv_size);
if (!output) {
return NULL;
}
Params params = { 0 };
params.output = output;
params.stride = stride;
if (mode == MODE_YUV) {
params.u = output + size;
params.u_stride = uv_stride;
params.v = output + size + uv_size;
params.v_stride = uv_stride;
}
if (params_out) *params_out = params;
return DecodeInto(mode, data, data_size, &params, size, uv_size, uv_size);
}
uint8_t* WebPDecodeRGB(const uint8_t* data, uint32_t data_size,
int *width, int *height) {
return Decode(MODE_RGB, data, data_size, width, height, NULL);
}
uint8_t* WebPDecodeRGBA(const uint8_t* data, uint32_t data_size,
int *width, int *height) {
return Decode(MODE_RGBA, data, data_size, width, height, NULL);
}
uint8_t* WebPDecodeBGR(const uint8_t* data, uint32_t data_size,
int *width, int *height) {
return Decode(MODE_BGR, data, data_size, width, height, NULL);
}
uint8_t* WebPDecodeBGRA(const uint8_t* data, uint32_t data_size,
int *width, int *height) {
return Decode(MODE_BGRA, data, data_size, width, height, NULL);
}
uint8_t* WebPDecodeYUV(const uint8_t* data, uint32_t data_size,
int *width, int *height, uint8_t** u, uint8_t** v,
int *stride, int* uv_stride) {
Params params;
uint8_t* const out = Decode(MODE_YUV, data, data_size,
width, height, &params);
if (out) {
*u = params.u;
*v = params.v;
*stride = params.stride;
*uv_stride = params.u_stride;
assert(params.u_stride == params.v_stride);
}
return out;
}
//-----------------------------------------------------------------------------
// WebPGetInfo()
int WebPGetInfo(const uint8_t* data, uint32_t data_size,
int *width, int *height) {
const uint32_t chunk_size = CheckRIFFHeader(&data, &data_size);
if (!chunk_size) {
return 0; // unsupported RIFF header
}
// Validate raw video data
if (data_size < 10) {
return 0; // not enough data
}
// check signature
if (data[3] != 0x9d || data[4] != 0x01 || data[5] != 0x2a) {
return 0; // Wrong signature.
}
const uint32_t bits = data[0] | (data[1] << 8) | (data[2] << 16);
const int key_frame = !(bits & 1);
if (!key_frame) { // Not a keyframe.
return 0;
}
const int profile = (bits >> 1) & 7;
const int show_frame = (bits >> 4) & 1;
const uint32_t partition_length = (bits >> 5);
if (profile > 3) {
return 0; // unknown profile
}
if (!show_frame) {
return 0; // first frame is invisible!
}
if (partition_length >= chunk_size) {
return 0; // inconsistent size information.
}
const int w = ((data[7] << 8) | data[6]) & 0x3fff;
const int h = ((data[9] << 8) | data[8]) & 0x3fff;
if (width) {
*width = w;
}
if (height) {
*height = h;
}
return 1;
}
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

111
src/webp/decode.h Normal file
View File

@ -0,0 +1,111 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Main decoding functions for WEBP images.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_DECODE_WEBP_DECODE_H_
#define WEBP_DECODE_WEBP_DECODE_H_
#ifndef _MSC_VER
#include <inttypes.h>
#else
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed short int16_t;
typedef unsigned short uint16_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
typedef unsigned long long int uint64_t;
#define inline __forceinline
#endif
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
// Retrieve basic header information: width, height.
// This function will also validate the header and return 0 in
// case of formatting error.
// Pointers *width/*height can be passed NULL if deemed irrelevant.
int WebPGetInfo(const uint8_t* data, uint32_t data_size,
int *width, int *height);
// Decodes WEBP images pointed to by *data and returns RGB samples, along
// with the dimensions in *width and *height.
// The returned pointer should be deleted calling free().
// Returns NULL in case of error.
uint8_t* WebPDecodeRGB(const uint8_t* data, uint32_t data_size,
int *width, int *height);
// Same as WebPDecodeRGB, but returning RGBA data.
uint8_t* WebPDecodeRGBA(const uint8_t* data, uint32_t data_size,
int *width, int *height);
// This variant decode to BGR instead of RGB.
uint8_t* WebPDecodeBGR(const uint8_t* data, uint32_t data_size,
int *width, int *height);
// This variant decodes to BGRA instead of RGBA.
uint8_t* WebPDecodeBGRA(const uint8_t* data, uint32_t data_size,
int *width, int *height);
// Decode WEBP images stored in *data in Y'UV format(*). The pointer returned is
// the Y samples buffer. Upon return, *u and *v will point to the U and V
// chroma data. These U and V buffers need NOT be free()'d, unlike the returned
// Y luma one. The dimension of the U and V planes are both (*width + 1) / 2
// and (*height + 1)/ 2.
// Upon return, the Y buffer has a stride returned as '*stride', while U and V
// have a common stride returned as '*uv_stride'.
// Return NULL in case of error.
// (*) Also named Y'CbCr. See: http://en.wikipedia.org/wiki/YCbCr
uint8_t* WebPDecodeYUV(const uint8_t* data, uint32_t data_size,
int *width, int *height, uint8_t** u, uint8_t** v,
int *stride, int* uv_stride);
// These three functions are variants of the above ones, that decode the image
// directly into a pre-allocated buffer 'output_buffer'. The maximum storage
// available in this buffer is indicated by 'output_buffer_size'. If this
// storage is not sufficient (or an error occurred), NULL is returned.
// Otherwise, output_buffer is returned, for convenience.
// The parameter 'output_stride' specifies the distance (in bytes)
// between scanlines. Hence, output_buffer_size is expected to be at least
// output_stride x picture-height.
uint8_t* WebPDecodeRGBInto(const uint8_t* data, uint32_t data_size,
uint8_t* output_buffer, int output_buffer_size,
int output_stride);
uint8_t* WebPDecodeRGBAInto(const uint8_t* data, uint32_t data_size,
uint8_t* output_buffer, int output_buffer_size,
int output_stride);
// BGR variants
uint8_t* WebPDecodeBGRInto(const uint8_t* data, uint32_t data_size,
uint8_t* output_buffer, int output_buffer_size,
int output_stride);
uint8_t* WebPDecodeBGRAInto(const uint8_t* data, uint32_t data_size,
uint8_t* output_buffer, int output_buffer_size,
int output_stride);
// WebPDecodeYUVInto() is a variant of WebPDecodeYUV() that operates directly
// into pre-allocated luma/chroma plane buffers. This function requires the
// strides to be passed: one for the luma plane and one for each of the
// chroma ones. The size of each plane buffer is passed as 'luma_size',
// 'u_size' and 'v_size' respectively.
// Pointer to the luma plane ('*luma') is returned or NULL if an error occurred
// during decoding (or because some buffers were found to be too small).
uint8_t* WebPDecodeYUVInto(const uint8_t* data, uint32_t data_size,
uint8_t* luma, int luma_size, int luma_stride,
uint8_t* u, int u_size, int u_stride,
uint8_t* v, int v_size, int v_stride);
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_DECODE_WEBP_DECODE_H_

107
src/webp/decode_vp8.h Normal file
View File

@ -0,0 +1,107 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Low-level API for VP8 decoder
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_DECODE_WEBP_DECODE_VP8_H_
#define WEBP_DECODE_WEBP_DECODE_VP8_H_
#include "decode.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//-----------------------------------------------------------------------------
// Lower-level API
//
// Thes functions provide fine-grained control of the decoding process.
// The call flow should resemble:
//
// VP8Io io;
// VP8InitIo(&io);
// io.data = data;
// io.data_size = size;
// /* customize io's functions (setup()/put()/teardown()) if needed. */
//
// VP8Decoder* dec = VP8New();
// bool ok = VP8Decode(dec);
// if (!ok) printf("Error: %s\n", VP8StatusMessage(dec));
// VP8Delete(dec);
// return ok;
// Input / Output
typedef struct VP8Io VP8Io;
struct VP8Io {
// set by VP8GetHeaders()
int width, height; // picture dimensions, in pixels
// set before calling put()
int mb_x, mb_y; // position of the current sample (in pixels)
int mb_w, mb_h; // size of the current sample (usually 16x16)
const uint8_t *y, *u, *v; // samples to copy
int y_stride; // stride for luma
int uv_stride; // stride for chroma
void* opaque; // user data
// called when fresh samples are available (1 block of 16x16 pixels)
void (*put)(const VP8Io* io);
// called just before starting to decode the blocks
void (*setup)(const VP8Io* io);
// called just after block decoding is finished
void (*teardown)(const VP8Io* io);
// Input buffer.
uint32_t data_size;
const uint8_t* data;
};
// Main decoding object. This is an opaque structure.
typedef struct VP8Decoder VP8Decoder;
// Create a new decoder object.
VP8Decoder* VP8New();
// Can be called to make sure 'io' is initialized properly.
void VP8InitIo(VP8Io* const io);
// Start decoding a new picture. Returns true if ok.
int VP8GetHeaders(VP8Decoder* const dec, VP8Io* const io);
// Decode a picture. Will call VP8GetHeaders() if it wasn't done already.
int VP8Decode(VP8Decoder* const dec, VP8Io* const io);
// Return current status of the decoder:
// 0 = OK
// 1 = OUT_OF_MEMORY
// 2 = INVALID_PARAM
// 3 = BITSTREAM_ERROR
// 4 = UNSUPPORTED_FEATURE
int VP8Status(VP8Decoder* const dec);
// return readable string corresponding to the last status.
const char* VP8StatusMessage(VP8Decoder* const dec);
// Resets the decoder in its initial state, reclaiming memory.
// Not a mandatory call between calls to VP8Decode().
void VP8Clear(VP8Decoder* const dec);
// Destroy the decoder object.
void VP8Delete(VP8Decoder* const dec);
//-----------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_DECODE_WEBP_DECODE_VP8_H_

45
src/yuv.c Normal file
View File

@ -0,0 +1,45 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// YUV->RGB conversion function
//
// Author: Skal (pascal.massimino@gmail.com)
#include "yuv.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
enum { YUV_HALF = 1 << (YUV_FIX - 1) };
int16_t VP8kVToR[256], VP8kUToB[256];
int32_t VP8kVToG[256], VP8kUToG[256];
uint8_t VP8kClip[YUV_RANGE_MAX - YUV_RANGE_MIN];
static int done = 0;
void VP8YUVInit() {
if (done) {
return;
}
for (int i = 0; i < 256; ++i) {
VP8kVToR[i] = (89858 * (i - 128) + YUV_HALF) >> YUV_FIX;
VP8kUToG[i] = -22014 * (i - 128) + YUV_HALF;
VP8kVToG[i] = -45773 * (i - 128);
VP8kUToB[i] = (113618 * (i - 128) + YUV_HALF) >> YUV_FIX;
}
for (int i = YUV_RANGE_MIN; i < YUV_RANGE_MAX; ++i) {
const int j = ((i - 16) * 76283 + YUV_HALF) >> YUV_FIX;
VP8kClip[i - YUV_RANGE_MIN] = (j < 0) ? 0 : (j > 255) ? 255 : j;
}
done = 1;
}
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif

66
src/yuv.h Normal file
View File

@ -0,0 +1,66 @@
// Copyright 2010 Google Inc.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// inline YUV->RGB conversion function
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_DECODE_YUV_H_
#define WEBP_DECODE_YUV_H_
#include "webp/decode_vp8.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
enum { YUV_FIX = 16, // fixed-point precision
YUV_RANGE_MIN = -227, // min value of r/g/b output
YUV_RANGE_MAX = 256 + 226 // max value of r/g/b output
};
extern int16_t VP8kVToR[256], VP8kUToB[256];
extern int32_t VP8kVToG[256], VP8kUToG[256];
extern uint8_t VP8kClip[YUV_RANGE_MAX - YUV_RANGE_MIN];
inline static void VP8YuvToRgb(uint8_t y, uint8_t u, uint8_t v,
uint8_t* const rgb) {
const int r_off = VP8kVToR[v];
const int g_off = (VP8kVToG[v] + VP8kUToG[u]) >> YUV_FIX;
const int b_off = VP8kUToB[u];
rgb[0] = VP8kClip[y + r_off - YUV_RANGE_MIN];
rgb[1] = VP8kClip[y + g_off - YUV_RANGE_MIN];
rgb[2] = VP8kClip[y + b_off - YUV_RANGE_MIN];
}
inline static void VP8YuvToRgba(int y, int u, int v, uint8_t* const rgba) {
VP8YuvToRgb(y, u, v, rgba);
rgba[3] = 0xff;
}
inline static void VP8YuvToBgr(uint8_t y, uint8_t u, uint8_t v,
uint8_t* const bgr) {
const int r_off = VP8kVToR[v];
const int g_off = (VP8kVToG[v] + VP8kUToG[u]) >> YUV_FIX;
const int b_off = VP8kUToB[u];
bgr[0] = VP8kClip[y + b_off - YUV_RANGE_MIN];
bgr[1] = VP8kClip[y + g_off - YUV_RANGE_MIN];
bgr[2] = VP8kClip[y + r_off - YUV_RANGE_MIN];
}
inline static void VP8YuvToBgra(int y, int u, int v, uint8_t* const bgra) {
VP8YuvToBgr(y, u, v, bgra);
bgra[3] = 0xff;
}
// Must be called before everything, to initialize the tables.
void VP8YUVInit();
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_DECODE_YUV_H_