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John Koleszar 30d8ba541e multi-res: work around reference mismatch
In some situations, believed to be an interaction between temporal
scalability and dropped frames, the references available to an
encoder may not be the same references available to its parent.
Previously, the code tried to force the reference frame chosen by
the parent to be used on this frame, even if it was disabled. This
was preventing the pick mode loop from running even once, which led
to a crash.

Attempts to reproduce this bug locally were unsuccessful, so it is
still undetermined what the underlying cause of this issue is. In
the specific case that was failing, the application did not set
any flags which influenced the reference selection on that frame.
ref_frame_flags indicated that the golden frame was disabled,
believed to be because the last frame updated the last and golden
frames, so golden was shut off by default. It's not clear why this
wouldn't have also been true in the lower res encoder, ie, why the
lower res encoder decided to use and/or was allowed to use the
golden frame. We weren't able to debug into the non-crashing
lower res encoder as the crash couldn't be reproduced locally.

Change-Id: Ifb265253d26963ac2afde0e20cf6792788be6af7
2012-10-08 08:39:47 -07:00
build check for x32 targets 2012-09-25 12:22:11 -04:00
examples examples: fix memory leak 2012-07-13 17:14:18 -07:00
libmkv silent compiling warnings for VC9 build 2012-08-20 11:45:01 -07:00
nestegg silent compiling warnings for VC9 build 2012-08-20 11:45:01 -07:00
test Merge "Added Reset method to TwopassStatsStore" 2012-10-03 13:45:46 -07:00
third_party Fix missing param name in NEON scaler functions 2012-05-03 13:13:38 +03:00
tools Be explicit about 'in-place' 2012-05-04 17:45:14 -07:00
vp8 multi-res: work around reference mismatch 2012-10-08 08:39:47 -07:00
vpx Added unit test of vp8_set_roimap() 2012-07-24 10:48:44 +01:00
vpx_mem Replace vpx_ports/config.h with vpx_config.h 2011-09-22 13:33:54 +03:00
vpx_ports check for x32 targets 2012-09-25 12:22:11 -04:00
vpx_scale Fix compilation with -werror 2012-06-20 09:43:42 -07:00
.gitattributes Initial WebM release 2010-05-18 11:58:33 -04:00
.gitignore update gitignores 2012-09-25 14:22:13 -04:00
.mailmap Update .mailmap 2012-05-08 15:01:35 -07:00
args.c squash some signed/unsigned comparison warnings 2011-12-21 13:49:19 -08:00
args.h Add psnr/ssim tuning option 2010-12-17 10:01:05 -05:00
AUTHORS Update AUTHORS 2012-05-08 15:01:35 -07:00
CHANGELOG Update CHANGELOG for v1.1.0 (Eider) release 2012-05-08 16:14:00 -07:00
configure do not error out on generic-gnu + --enable-shared 2012-08-14 11:39:20 -07:00
docs.mk remove deprecated pre-v0.9.0 API 2012-05-04 10:44:46 -07:00
example_xma.c Use WebM in copyright notice for consistency 2010-09-09 10:01:21 -04:00
examples.mk vp8_multi_resolution_encoder.c is not a generated example 2012-05-03 13:14:05 +03:00
keywords.dox Initial WebM release 2010-05-18 11:58:33 -04:00
libs.doxy_template Use WebM in copyright notice for consistency 2010-09-09 10:01:21 -04:00
libs.mk build: hide msvs project command in non-verbose mode 2012-08-21 13:26:42 -07:00
LICENSE Update LICENSE to reflect WebM authors 2011-11-11 14:46:36 -08:00
mainpage.dox doxy: fix conditional usage, ref warnings 2012-03-15 16:51:51 -07:00
md5_utils.c Adds "armvX-none-rvct" targets 2011-01-28 12:47:39 +02:00
md5_utils.h Use public domain implementation for MD5 algorithm 2010-06-14 08:48:22 -04:00
PATENTS LICENSE: update with latest text 2010-06-04 16:19:40 -04:00
README Add support for downloading test data 2012-06-21 10:41:48 -07:00
solution.mk Fix MSVS builds for unit test changes 2012-06-01 10:43:47 -07:00
tools_common.c Add OS/2 supports 2012-02-08 09:44:42 -08:00
tools_common.h fix pipe support on windows 2010-11-02 09:14:24 -04:00
usage_cx.dox Multiple-resolution encoder 2011-12-05 17:59:42 -05:00
usage_dx.dox Initial WebM release 2010-05-18 11:58:33 -04:00
usage.dox doxy: fix conditional usage, ref warnings 2012-03-15 16:51:51 -07:00
vp8_multi_resolution_encoder.c multi-res: add drop_frame support 2012-07-26 08:36:53 -07:00
vp8_scalable_patterns.c Update to 2 layer case in vp8_scalable_patterns. 2012-09-17 12:45:22 -07:00
vpxdec.c Moved vp8dx_get_raw_frame() call to vp8_get_frame() 2012-09-19 12:30:44 -07:00
vpxenc.c silent compiling warnings for VC9 build 2012-08-20 11:45:01 -07:00
y4minput.c silent compiling warnings for VC9 build 2012-08-20 11:45:01 -07:00
y4minput.h Use WebM in copyright notice for consistency 2010-09-09 10:01:21 -04:00

vpx Multi-Format Codec SDK
README - 21 June 2012

Welcome to the WebM VP8 Codec SDK!

COMPILING THE APPLICATIONS/LIBRARIES:
  The build system used is similar to autotools. Building generally consists of
  "configuring" with your desired build options, then using GNU make to build
  the application.

  1. Prerequisites

    * All x86 targets require the Yasm[1] assembler be installed.
    * All Windows builds require that Cygwin[2] be installed.
    * Building the documentation requires PHP[3] and Doxygen[4]. If you do not
      have these packages, you must pass --disable-install-docs to the
      configure script.
    * Downloading the data for the unit tests requires curl[5] and sha1sum.
      sha1sum is provided via the GNU coreutils, installed by default on
      many *nix platforms, as well as MinGW and Cygwin. If coreutils is not
      available, a compatible version of sha1sum can be built from
      source[6]. These requirements are optional if not running the unit
      tests.

    [1]: http://www.tortall.net/projects/yasm
    [2]: http://www.cygwin.com
    [3]: http://php.net
    [4]: http://www.doxygen.org
    [5]: http://curl.haxx.se
    [6]: http://www.microbrew.org/tools/md5sha1sum/

  2. Out-of-tree builds
  Out of tree builds are a supported method of building the application. For
  an out of tree build, the source tree is kept separate from the object
  files produced during compilation. For instance:

    $ mkdir build
    $ cd build
    $ ../libvpx/configure <options>
    $ make

  3. Configuration options
  The 'configure' script supports a number of options. The --help option can be
  used to get a list of supported options:
    $ ../libvpx/configure --help

  4. Cross development
  For cross development, the most notable option is the --target option. The
  most up-to-date list of supported targets can be found at the bottom of the
  --help output of the configure script. As of this writing, the list of
  available targets is:

    armv5te-android-gcc
    armv5te-linux-rvct
    armv5te-linux-gcc
    armv6-darwin-gcc
    armv6-linux-rvct
    armv6-linux-gcc
    armv7-android-gcc
    armv7-linux-rvct
    armv7-linux-gcc
    mips32-linux-gcc
    ppc32-darwin8-gcc
    ppc32-darwin9-gcc
    ppc64-darwin8-gcc
    ppc64-darwin9-gcc
    ppc64-linux-gcc
    x86-darwin8-gcc
    x86-darwin8-icc
    x86-darwin9-gcc
    x86-darwin9-icc
    x86-linux-gcc
    x86-linux-icc
    x86-solaris-gcc
    x86-win32-vs7
    x86-win32-vs8
    x86_64-darwin9-gcc
    x86_64-linux-gcc
    x86_64-solaris-gcc
    x86_64-win64-vs8
    universal-darwin8-gcc
    universal-darwin9-gcc
    generic-gnu

  The generic-gnu target, in conjunction with the CROSS environment variable,
  can be used to cross compile architectures that aren't explicitly listed, if
  the toolchain is a cross GNU (gcc/binutils) toolchain. Other POSIX toolchains
  will likely work as well. For instance, to build using the mipsel-linux-uclibc
  toolchain, the following command could be used (note, POSIX SH syntax, adapt
  to your shell as necessary):

    $ CROSS=mipsel-linux-uclibc- ../libvpx/configure

  In addition, the executables to be invoked can be overridden by specifying the
  environment variables: CC, AR, LD, AS, STRIP, NM. Additional flags can be
  passed to these executables with CFLAGS, LDFLAGS, and ASFLAGS.

  5. Configuration errors
  If the configuration step fails, the first step is to look in the error log.
  This defaults to config.err. This should give a good indication of what went
  wrong. If not, contact us for support.

SUPPORT
  This library is an open source project supported by its community. Please
  please email webm-discuss@webmproject.org for help.