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crosvm/media/ffmpeg
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Kaiyi Li c28067d1d9 Reformat comments 
Test: presubmit
Change-Id: I39c261d9985989873b698213c5d8b653fc13757b
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/5299850
Auto-Submit: Kaiyi Li <kaiyili@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
2024-02-15 23:30:13 +00:00
..
src Reformat comments 2024-02-15 23:30:13 +00:00
build.rs media: ffmpeg: generate bindings in build.rs 2023-12-08 20:58:57 +00:00
Cargo.toml media: ffmpeg: generate bindings in build.rs 2023-12-08 20:58:57 +00:00
README.md media: ffmpeg: generate bindings in build.rs 2023-12-08 20:58:57 +00:00

README.md

FFmpeg wrapper

This is a minimal FFmpeg 5.0+ wrapper for use with the virtio-video device, allowing to run a virtual video device backed by software decoding or encoding. This is useful for development and testing in situations where no supported video acceleration is available on the host.

Although several FFmpeg binding crates exist, most of them are not able to link against the system FFmpeg, and the only one that does is released under a software license that makes our lawyers nervous.

So taking this in consideration, as well as the extra work that it is to depend on external Rust crates in ChromeOS, it is preferable to add our own simple bindings here that cover just the parts of FFmpeg that we need.

This crate has minimal dependencies ; on the FFmpeg side, it just uses libavcodec, libavutil and libswscale.

A few elements that bindgen cannot generate because they are behind C macros are re-defined in avutil.rs and error.rs, as well as tests to ensure their correctness.

And that's about it.