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crosvm/media/ffmpeg/bindgen.sh

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virtio: video: decoder: add ffmpeg-based software decoder backend The virtio video decoder device is currently only available under very drastic conditions: a build linked against libvda (a ChromeOS-only library that needs the cros chroot to be built and linked against), and a ChromeOS-flavored Chrome instance running alongside crosvm, so the browser can provide the video decoding service through Mojo. This makes the decoder device very difficult to develop on for non-Chromies, and also for Chromies actually since they will always need a DUT to test it on. This patch introduces an alternative decoder backend based on ffmpeg's libraries that performs decoding on the host's CPU. It supports both guest pages and virtio objects as target, and can be considered a reliable and predictable way to test the decoder in any environment. We introduce our own ffmpeg bindings after a quick state of the art revealed that the existing ones were all unsuitable, either for technical or licensing reasons. Doing so is also not a big effort and does not add any new external crate dependency to crosvm. BUG=b:169295147 TEST=cargo test --features "video-decoder,ffmpeg" -p devices ffmpeg TEST=v4l2r's simple_decoder example decodes test-25fps.h264 properly with the following command: ./simple_decoder test-25fps.h264 /dev/video0 --input_format h264 --save test-25fps.nv12 TEST=ARCVM Android youtube plays videos correctly when the ffmpeg backend is used. Change-Id: Ic9c586193f7939f2a3fe59d009c3666585a8bbc7 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3026355 Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
2022-06-02 02:18:48 +00:00
#!/usr/bin/env bash
# Copyright 2022 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Regenerate ffmpeg bindgen bindings.
set -euo pipefail
cd "$(dirname "${BASH_SOURCE[0]}")/../.."
VERSIONS="media/ffmpeg/VERSIONS"
#source tools/impl/bindgen-common.sh
bindgen media/ffmpeg/src/bindings.h -o media/ffmpeg/src/ffmpeg.rs \
--allowlist-function "av_.*" \
--allowlist-function "avcodec_.*" \
--allowlist-function "sws_.*" \
--allowlist-function "av_image_.*" \
--allowlist-var "FF_PROFILE.*" \
--allowlist-var "AV_.*" \
--allowlist-var "AVERROR_.*"
media: ffmpeg: upgrade to ffmpeg 5.0 libraries Update the ffmpeg bindings and build script to use 5.0 and update our code to match the API changes since 4.4. BUG=None TEST=cargo test -p ffmpeg TEST=cargo test --features "video-decoder,ffmpeg" -p devices video TEST=v4l2r example from the crosvm book passses. Change-Id: If7820a4dd270d715e89c60d55f89b9730f40e864 Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3835501 Reviewed-by: Tatsuyuki Ishi <ishitatsuyuki@google.com> Tested-by: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Dennis Kempin <denniskempin@google.com> Commit-Queue: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Takaya Saeki <takayas@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
2022-08-18 02:26:48 +00:00
echo "# These version numbers are updated by the bindgen.sh script" >$VERSIONS
virtio: video: decoder: add ffmpeg-based software decoder backend The virtio video decoder device is currently only available under very drastic conditions: a build linked against libvda (a ChromeOS-only library that needs the cros chroot to be built and linked against), and a ChromeOS-flavored Chrome instance running alongside crosvm, so the browser can provide the video decoding service through Mojo. This makes the decoder device very difficult to develop on for non-Chromies, and also for Chromies actually since they will always need a DUT to test it on. This patch introduces an alternative decoder backend based on ffmpeg's libraries that performs decoding on the host's CPU. It supports both guest pages and virtio objects as target, and can be considered a reliable and predictable way to test the decoder in any environment. We introduce our own ffmpeg bindings after a quick state of the art revealed that the existing ones were all unsuitable, either for technical or licensing reasons. Doing so is also not a big effort and does not add any new external crate dependency to crosvm. BUG=b:169295147 TEST=cargo test --features "video-decoder,ffmpeg" -p devices ffmpeg TEST=v4l2r's simple_decoder example decodes test-25fps.h264 properly with the following command: ./simple_decoder test-25fps.h264 /dev/video0 --input_format h264 --save test-25fps.nv12 TEST=ARCVM Android youtube plays videos correctly when the ffmpeg backend is used. Change-Id: Ic9c586193f7939f2a3fe59d009c3666585a8bbc7 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3026355 Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Alexandre Courbot <acourbot@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
2022-06-02 02:18:48 +00:00
echo "avcodec: `pkg-config --modversion libavcodec`" >>$VERSIONS
echo "avutil: `pkg-config --modversion libavutil`" >>$VERSIONS
echo "swscale: `pkg-config --modversion libswscale`" >>$VERSIONS
echo "Libraries versions updated in the VERSIONS file."
echo "Please check the minimum required versions in build.rs and make sure that"
echo "the major number is the same"
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