Alliance for Open Media Video Codec reference implementation (Mozilla branch)
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Nathan E. Egge cfb02ddcad Add code to compute in-order mappings for tokens.
Add av1_indices_from_tree() function that computes a forward and inverse
 mapping of the tree leaf-node symbols to their in-order traversal.
This is necessary because many of the aom_tree binary trees have their
 leaf nodes out of order (e.g., an in-order traversal of a tree with n
 nodes does not start at symbol 0 and go to symbol n - 1), but the CDFs
 created by tree_to_cdf() are indexed in-order.

Change-Id: Icd0dbed4c171a67c9e84a634106c4fdb5b1b3488
2016-10-14 14:59:27 -07:00
aom enums.h: Combine related #defines into packed enums. 2016-09-22 09:44:51 -07:00
aom_dsp Fix bug in av1_tree_to_cdf_2D() macro. 2016-10-14 14:59:27 -07:00
aom_mem aom_mem,align_addr: use ~ to create mask 2016-09-08 10:45:15 -07:00
aom_ports apply clang-format 2016-09-15 16:41:21 -07:00
aom_scale Rename AOM_ENC/DEC_BORDER_IN_PIXELS 2016-09-30 15:17:16 -07:00
aom_util change to use aomedia copyright notice 2016-10-11 12:36:17 -07:00
av1 Add code to compute in-order mappings for tokens. 2016-10-14 14:59:27 -07:00
build Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
examples Add compiler flag -Wsign-compare 2016-10-12 08:27:00 -07:00
test Merge "Switch rANS to 15 bit precision, and adjust L_BASE." into nextgenv2 2016-10-14 21:56:34 +00:00
third_party Style fixes for global motion experiment 2016-09-16 16:22:24 -07:00
tools Add the tool used to generate the constrained tokenset. 2016-10-12 17:41:01 -07:00
.clang-format .clang-format: update to 3.8.1 2016-09-15 15:12:14 -07:00
.gitattributes Initial WebM release 2010-05-18 11:58:33 -04:00
.gitignore vp8_multi_resolution_encoder.sh: remove file 2016-09-09 18:46:40 +00:00
.mailmap Strip redundant entries from .mailmap 2015-12-07 09:03:00 -08:00
AUTHORS Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
CHANGELOG Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
LICENSE Use AOMedia's Patents and LICENSE files 2016-09-06 16:09:03 -07:00
PATENTS Use AOMedia's Patents and LICENSE files 2016-09-06 16:09:03 -07:00
README LIBVPX_TEST_DATA_PATH -> LIBAOM_TEST_DATA_PATH 2016-10-12 08:26:44 -07:00
aomdec.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
aomenc.c Add notes for an option 2016-09-30 15:39:53 -07:00
aomenc.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
aomstats.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
aomstats.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
args.c Include fix: use aom_integer.h 2016-10-12 08:27:00 -07:00
args.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
codereview.settings Add a codereview.setting file so that `git cl upload` works. 2015-08-07 22:24:24 +00:00
configure Add Daala entropy coder. 2016-10-14 14:59:27 -07:00
docs.mk change to use aomedia copyright notice 2016-09-23 15:37:36 -07:00
examples.mk minor format fix 2016-09-23 15:37:46 -07:00
ivfdec.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
ivfdec.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
ivfenc.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
ivfenc.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
keywords.dox Initial WebM release 2010-05-18 11:58:33 -04:00
libs.doxy_template Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
libs.mk LIBVPX_TEST_DATA_PATH -> LIBAOM_TEST_DATA_PATH 2016-10-12 08:26:44 -07:00
mainpage.dox Port renaming changes from AOMedia 2016-08-31 18:19:03 -07:00
md5_utils.c Port renaming changes from AOMedia 2016-08-31 18:19:03 -07:00
md5_utils.h top-level: add extern "C" to headers 2014-01-23 19:42:59 -08:00
rate_hist.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
rate_hist.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
solution.mk Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
tools_common.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
tools_common.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
usage.dox Port renaming changes from AOMedia 2016-08-31 18:19:03 -07:00
usage_cx.dox Port renaming changes from AOMedia 2016-08-31 18:19:03 -07:00
usage_dx.dox Port renaming changes from AOMedia 2016-08-31 18:19:03 -07:00
video_common.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
video_reader.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
video_reader.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
video_writer.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
video_writer.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
warnings.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
warnings.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
webmdec.cc Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
webmdec.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
webmenc.cc Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
webmenc.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
y4menc.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
y4menc.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
y4minput.c Change to use aom copyright notice 2016-09-02 08:22:07 -07:00
y4minput.h Change to use aom copyright notice 2016-09-02 08:22:07 -07:00

README

README - 23 March 2015

Welcome to the WebM VP8/AV1 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
    $ ../libaom/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:
    $ ../libaom/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-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
    armv7-win32-vs14
    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-vs10
    x86-win32-vs11
    x86-win32-vs12
    x86-win32-vs14
    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-vs10
    x86_64-win64-vs11
    x86_64-win64-vs12
    x86_64-win64-vs14
    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- ../libaom/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/AV1 TEST VECTORS:
  The test vectors can be downloaded and verified using the build system after
  running configure. To specify an alternate directory the
  LIBAOM_TEST_DATA_PATH environment variable can be used.

  $ ./configure --enable-unit-tests
  $ LIBAOM_TEST_DATA_PATH=../-test-data make testdata

CODE STYLE:
  The coding style used by this project is enforced with clang-format using the
  configuration contained in the .clang-format file in the root of the
  repository.

  Before pushing changes for review you can format your code with:
  # Apply clang-format to modified .c, .h and .cc files
  $ clang-format -i --style=file \
    $(git diff --name-only --diff-filter=ACMR '*.[hc]' '*.cc')

  Check the .clang-format file for the version used to generate it if there is
  any difference between your local formatting and the review system.

  See also: http://clang.llvm.org/docs/ClangFormat.html

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