Alliance for Open Media Video Codec reference implementation (Mozilla branch)
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Martin Storsjo 644587cfdd ads2gas: Allow converting code to thumb mode
Currently this only supports thumb2.

This involves rewriting certain instructions that can't be expressed
in thumb2 into equivalent instruction sequences. The regexps for
rewriting are currently written pretty narrowly, only covering the
exact cases currently encountered in the code base.

No IT instructions are added (since that would require more logic than
plain regexps), so using the thumb mode requires enabling
-mimplicit-it=always/thumb.

Change-Id: I1f676ad1d351381f02bcf00105102aa8dd7ae364
2013-05-13 12:49:36 +03:00
build ads2gas: Allow converting code to thumb mode 2013-05-13 12:49:36 +03:00
examples Build fixes to merge vp9-preview into master 2012-12-26 11:21:09 -08:00
libmkv Adding/Uncommenting elements for Alpha Support 2013-04-01 15:36:29 -07:00
nestegg webm: add support for V_VP9 2012-11-15 15:07:27 -08:00
test Merge branch 'experimental' into master 2013-04-16 06:49:46 -07:00
third_party Use smartalign for long nops with NASM 2013-02-03 21:51:05 +09:00
tools support building vp8 and vp9 into a single lib 2012-11-15 10:46:17 -08:00
vp8 Rename quantize_sse2_intrinsics.c 2013-04-24 09:08:56 -07:00
vp9 Match unsigned types 2013-04-29 14:22:30 -07:00
vpx Convert inv_tile_order to control interface 2013-03-27 11:22:20 -07:00
vpx_mem Merge vp9-preview changes into experimental branch 2013-01-08 10:19:59 -08:00
vpx_ports Merge "Add cpu detection for Android x86" 2013-05-01 22:58:41 -07:00
vpx_scale Merge branch 'experimental' into master 2013-04-16 06:49:46 -07:00
.gitattributes Initial WebM release 2010-05-18 11:58:33 -04:00
.gitignore Ignoring test video sequences in the source tree. 2013-02-28 15:10:48 -08:00
.mailmap Update .mailmap 2012-05-08 15:01:35 -07:00
AUTHORS Update AUTHORS 2012-05-08 15:01:35 -07:00
CHANGELOG Update CHANGELOG for v1.2.0 release 2012-12-21 14:22:35 -08:00
LICENSE Update LICENSE to reflect WebM authors 2011-11-11 14:46:36 -08:00
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
args.c Merge other top-level C code 2012-11-06 12:08:05 -08:00
args.h Restyle code 2012-07-17 11:46:03 -07:00
configure Merge branch 'master' into experimental 2013-03-27 10:46:19 -07:00
docs.mk Rename vp8/ codec directory to vp9/. 2012-11-01 16:31:22 -07:00
example_xma.c Rename vp8/ codec directory to vp9/. 2012-11-01 16:31:22 -07:00
examples.mk vpxdec: support scaling output 2013-02-27 08:22:40 -08:00
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 Fix Android ndk-build 2013-04-17 10:52:50 -07:00
mainpage.dox doxy: fix conditional usage, ref warnings 2012-03-15 16:51:51 -07:00
md5_utils.c Restyle code 2012-07-17 11:46:03 -07:00
md5_utils.h Restyle code 2012-07-17 11:46:03 -07:00
solution.mk Fix MSVS builds for unit test changes 2012-06-01 10:43:47 -07:00
tools_common.c Merge other top-level C code 2012-11-06 12:08:05 -08:00
tools_common.h Restyle code 2012-07-17 11:46:03 -07:00
usage.dox doxy: fix conditional usage, ref warnings 2012-03-15 16:51:51 -07:00
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
vp8_multi_resolution_encoder.c Change some settings in multi-res_encoder test. 2013-01-09 18:27:23 -08:00
vp8_scalable_patterns.c Update to 2 layer case in vp8_scalable_patterns. 2012-09-17 12:45:22 -07:00
vpxdec.c Change to fourcc to enable decoding of ffmpeg files. 2013-04-29 14:24:21 -07:00
vpxenc.c Convert g_frame_parallel_decoding to control interface 2013-03-27 11:07:26 -07:00
y4minput.c Merge other top-level C code 2012-11-06 12:08:05 -08:00
y4minput.h Restyle code 2012-07-17 11:46:03 -07:00

README

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.