Add a wrapper for libavcodec's AVBufferRef and allow AvPacket to be
built from one ; this makes the AvPacket the owner of the data and means
it doesn't need to internally copy it.
The input data will be dropped once avcodec signals that it doesn't need
it anymore.
BUG=b:169295147
TEST=v4l2r's simple_decoder can decode a H.264 stream.
Change-Id: I9fa54124daed031fd1f397eaa8d57dc73f83c9b8
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3782037
Reviewed-by: Takaya Saeki <takayas@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
crosvm is switching the import style to use one import per line.
While more verbose, this will greatly reduce the occurence of merge
conflicts going forward.
Note: This is using a nightly feature of rustfmt. So it's a one-off
re-format only. We are considering adding a nightly toolchain to
enable the feature permanently.
BUG=b:239937122
TEST=CQ
Change-Id: Id2dd4dbdc0adfc4f8f3dd1d09da1daafa2a39992
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3784345
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Dennis Kempin <denniskempin@google.com>
Commit-Queue: Dennis Kempin <denniskempin@google.com>
We want the ffmpeg crate to be independent of crosvm - remove a
dependency to base by adding a dedicated trait for types that can be
used as sources to a ffmpeg buffer.
BUG=b:169295147
TEST=v4l2r's simple_decoder can decode a H.264 stream.
Change-Id: I2ae6c2678a6a672746e6fc11a70dee692986db69
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3782032
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Takaya Saeki <takayas@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
We only need to enforce a lifetime to the data source of the packet ; we
are not interested in its type. Replace it by () and remove that generic
parameter.
BUG=b:169295147
TEST=cargo build --features "video-decoder,ffmpeg"
Change-Id: Ibd9e976cab9dcc9cf0a44487580eb067211cc9b8
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3782031
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Being able to build an AvCodec means that the returned name will be
valid - unless there is a bug in libavcodec itself. Simplify the method
returning the codec's name to not return an Option, but instead a string
representing an invalid codec in the unlikely case we actually get one.
BUG=None
TEST=cargo build --features "video-decoder,ffmpeg"
Change-Id: Ic2c1b5db5391c421ae6f78faabcfe3197090ce17
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3782030
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Takaya Saeki <takayas@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
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>
