c353da68aa
Changes: b6de61a Adds support for simple tags 75a6d2d sample_muxer: Don't write huge files. cec1f85 mkvmuxer: remove unused timecode_scale variable 8a61b40 Merge "mkvparser: Tiny whitespace fix." 7affc5c clang-format re-run d6d04ac mkvmuxer: use generic Cluster::AddFrame 4928b0b Merge "mkvmuxer: Write Block key frames correctly." c2e4a46 Merge "sample_muxer: Use AddGenericFrame to add frames." e97f296 mkvparser: Tiny whitespace fix. d66ba44 Merge "Add support to parse DisplayUnit." deb41c2 Add support to parse DisplayUnit. 42e5660 Fix issues on EBML lacing block parsing fe1e9bb Fix block parsing to not allow frame_size = 0 2cb6a28 Change assertions to checks when parsing TrackPositions d04580f Fixes issues on Block Group parsing c3550fd mkvmuxer: Write Block key frames correctly. 5dd0e40 Merge "mkvmuxer: Set is_key to true for metadata blocks." 8e96863 mkvmuxer: Set is_key to true for metadata blocks. a9e4819 sample_muxer: Use AddGenericFrame to add frames. 5a3be73 Change assertions to checks when load CuePoints f99f3b2 mkvmuxerutil::EbmlDateElementSize: remove value param ff572b5 Frame::IsValid: fix track_number check b6311dc mkvmuxer: Refactor to remove a lot of duplicate code 256cd02 Merge "mkvmuxer: DiscardPadding should be signed integer." 16c8e78 mkvmuxer: s/frame/data in all AddFrame* functions. c5e511c mkvmuxer: DiscardPadding should be signed integer. 4baaa2c Add framework build script: iosbuild.sh 3d06eb1 PATENTS: fix a typo: constitutes -> constitute d3849c2 mkvparser: Dead code removal. f439e52 Change assertions to checks when preloading Cues d3a44cd Fix track transversal when listing Cues on sample c6255af Tweak .gitignore so git status is clean after checkout and build: - added missing underscore to sample_muxer - added cmake and make related files b5229c7 Makefile.unix: s/samplemuxer/sample_muxer/ e3616a6 Add support to parse stereo mode, display width and display height in mkvparser a4b68f8 parser: Fix bug in Chapters::Atom::Parse() bab0a00 cmake: Set library and project name the proper way on Windows. feeb9b1 Set library name to match Windows expectations. b9a549b Fix CMakefile to generate libwebm.a b386aa5 Add CMakeLists.txt and msvc_runtime.cmake. b0f8a81 parser: Fix memory leak in Chapter parsing f06e152 mkvmuxer: Fix MoveCuesBeforeClustersHelper recursive call. 27bb747 allow subtitle tracks with ContentEncodings 623d182 DoLoadCluster: tolerate empty clusters 1156da8 Update PATENTS to reflect s/VP8/WebM/g 0d4cb40 mkvmuxerutil: Use rand() in MSVC builds. e12fff0 mkvmuxer: Overload WriteEbmlHeader for backward compatibility a321704 mkvmuxer: write correct DocTypeVersion 574045e mkvmuxer: fix DiscardPadding 8be6397 Include crop elements when calculating size of Video element 8f2d1b3 mkvparser: fix DiscardPadding extraction 1c36c24 mkvmuxer: fix style guide violations 568504e Merge "UUIDs can have their high bit set" acf788b Add support for CropLeft, CropRight, CropTop and CropBottom elements. 418188b Merge "muxer: codec_id is a mandatory element" 07688c9 mkvmuxer: Reject frames if invalid track number is passed. 2a63e47 muxer: codec_id is a mandatory element d13c017 UUIDs can have their high bit set Change-Id: Iba28acb1ff774349d03e565f2641ddea132cf1e7
README - 23 March 2015
Welcome to the WebM VP8/VP9 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 Doxygen[3]. If you do not
have this package, the install-docs option will be disabled.
* Downloading the data for the unit tests requires curl[4] 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[5]. These requirements are optional if not running the unit
tests.
[1]: http://www.tortall.net/projects/yasm
[2]: http://www.cygwin.com
[3]: http://www.doxygen.org
[4]: http://curl.haxx.se
[5]: 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:
armv6-darwin-gcc
armv6-linux-rvct
armv6-linux-gcc
armv6-none-rvct
arm64-darwin-gcc
armv7-android-gcc
armv7-darwin-gcc
armv7-linux-rvct
armv7-linux-gcc
armv7-none-rvct
armv7-win32-vs11
armv7-win32-vs12
armv7s-darwin-gcc
mips32-linux-gcc
mips64-linux-gcc
sparc-solaris-gcc
x86-android-gcc
x86-darwin8-gcc
x86-darwin8-icc
x86-darwin9-gcc
x86-darwin9-icc
x86-darwin10-gcc
x86-darwin11-gcc
x86-darwin12-gcc
x86-darwin13-gcc
x86-darwin14-gcc
x86-iphonesimulator-gcc
x86-linux-gcc
x86-linux-icc
x86-os2-gcc
x86-solaris-gcc
x86-win32-gcc
x86-win32-vs7
x86-win32-vs8
x86-win32-vs9
x86-win32-vs10
x86-win32-vs11
x86-win32-vs12
x86_64-android-gcc
x86_64-darwin9-gcc
x86_64-darwin10-gcc
x86_64-darwin11-gcc
x86_64-darwin12-gcc
x86_64-darwin13-gcc
x86_64-darwin14-gcc
x86_64-iphonesimulator-gcc
x86_64-linux-gcc
x86_64-linux-icc
x86_64-solaris-gcc
x86_64-win64-gcc
x86_64-win64-vs8
x86_64-win64-vs9
x86_64-win64-vs10
x86_64-win64-vs11
x86_64-win64-vs12
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.log. This should give a good indication of what went
wrong. If not, contact us for support.
VP8/VP9 TEST VECTORS:
The test vectors can be downloaded and verified using the build system after
running configure. To specify an alternate directory the
LIBVPX_TEST_DATA_PATH environment variable can be used.
$ ./configure --enable-unit-tests
$ LIBVPX_TEST_DATA_PATH=../libvpx-test-data make testdata
SUPPORT
This library is an open source project supported by its community. Please
please email webm-discuss@webmproject.org for help.