commit | e6bb3c4b13e19dd6fdc8e1d1c98065d353c4285b | [log] [tgz] |
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author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Thu Feb 29 17:30:00 2024 +0000 |
committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Thu Feb 29 17:30:00 2024 +0000 |
tree | 6c2b5c30b2320802f44e5fabf1058c74c3f7df25 | |
parent | e26e6bd3bae599d9e77497b01db8b85828464e61 [diff] | |
parent | fb8fddeaeccbe2e4841636a91a369c1bf0dd3d80 [diff] |
Snap for 11515517 from fb8fddeaeccbe2e4841636a91a369c1bf0dd3d80 to mainline-adservices-release Change-Id: I843226003d86135c01c9645b9e823479b186612e
dav1d is an AV1 cross-platform decoder, open-source, and focused on speed and correctness.
It is now battle-tested and production-ready and can be used everywhere.
The canonical repository URL for this repo is https://code.videolan.org/videolan/dav1d
This project was partially funded by the Alliance for Open Media/AOM.
The goal of this project is to provide a decoder for most platforms, and achieve the highest speed possible to overcome the temporary lack of AV1 hardware decoder.
It supports all features from AV1, including all subsampling and bit-depth parameters.
In the future, this project will host simple tools or simple wrappings (like, for example, an MFT transform).
dav1d is released under a very liberal license, a contrario from the other VideoLAN projects, so that it can be embedded anywhere, including non-open-source software; or even drivers, to allow the creation of hybrid decoders.
The reasoning behind this decision is the same as for libvorbis, see RMS on vorbis.
The plan is the following:
Currently, we are looking for help from:
Our contributions guidelines are quite strict. We want to build a coherent codebase to simplify maintenance and achieve the highest possible speed.
Notably, the codebase is in pure C and asm.
We are on IRC, on the #dav1d channel on Libera.chat. If you do not have an IRC Client at hand, use IRC Web Interface.
See the contributions document.
There is no CLA.
People will keep their copyright and their authorship rights, while adhering to the BSD 2-clause license.
VideoLAN will only have the collective work rights.
The VideoLAN Code of Conduct applies to this project.
mkdir build && cd build
to create a build directory and enter itmeson setup ..
to configure meson, add --default-library=static
if static linking is desiredninja
to compileIf you're on a linux build machine trying to compile .exe for a Windows target/host machine, run
meson setup build --cross-file=package/crossfiles/x86_64-w64-mingw32.meson
or, for 32-bit:
meson setup build --cross-file=package/crossfiles/i686-w64-mingw32.meson
mingw-w64
is a pre-requisite and should be installed on your linux machine via your preferred method or package manager. Note the binary name formats may differ between distributions. Verify the names, and use alias
if certain binaries cannot be found.
For 32-bit linux, run
meson setup build --cross-file=package/crossfiles/i686-linux32.meson
meson setup build -Denable_docs=true
to create the build directoryninja -C build doc/html
to build the docsThe result can be found in build/doc/html/
. An online version built from master can be found here.
git clone https://code.videolan.org/videolan/dav1d-test-data.git tests/dav1d-test-data
to fetch the test data repository-Dtestdata_tests=true
meson test -v
after compilingThis project is partially funded by the Alliance for Open Media/AOM and is supported by TwoOrioles and VideoLabs.
These companies can provide support and integration help, should you need it.
Please read the AV1 patent license that applies to the AV1 specification and codec.