[PATCH v3 0/4] Add V4L stateless video decoder API support to NVIDIA Tegra driver

Dmitry Osipenko
2022-02-07T14:46:47Z

Support V4L stateless video decoder API by NVIDIA Tegra decoder driver.
Tested using GStreamer [1] and libvdpau-tegra [2][8].

[1] https://github.com/grate-driver/gstreamer/commit/b8509bdbb69b534e61419ea1798f32f9ad2f3597
[2] https://github.com/grate-driver/libvdpau-tegra/commit/f822e95911e5e0c39f8ba19f843ddc1e0138d5ce
[8] https://github.com/grate-driver/libvdpau-tegra/commit/80db4d02369f2a984ce3173d6bc305f32e9fdb97

Changelog:

v3: - Added new decode_params flags [7] instead of V4L2_BUF_FLAG_*FRAME flags,
as was suggested by Nicolas Dufresne.

[7] https://github.com/grate-driver/gstreamer/commit/c5cd847f9c26b7669720ae58f9058de2515f51a2

- Added new patch that removes legacy UAPI.

v2: - Made V4L2_BUF_FLAG_*FRAME flags mandatory [3] and dropped reading
of raw bitstream from the driver code, as was suggested by
Nicolas Dufresne.

[3] https://github.com/grate-driver/gstreamer/commit/aee292f0f2e84b7654a314dd7e63f916888ffaa5

- Ran v4l2-compliance [4] and fluster [5][6] tests, like was suggested by
Nicolas Dufresne. Fixed minor v4l2-compliance errors that were related
to a partial initialization of the coded format and were harmless in
practice, but made compliance checker unhappy.

[4] https://gist.github.com/digetx/5d6bcdab633488f1dcc7c141ab90d30e
[5] https://gist.github.com/digetx/b06c5d779e9d25afa41d9f46946fe399
[6] https://gist.github.com/digetx/ac4198bc340e5065aa8ec3288bb21356

Dmitry Osipenko (4):
media: v4l2-ctrls: Add new V4L2_H264_DECODE_PARAM_FLAG_P/BFRAME flags
media: staging: tegra-vde: Factor out H.264 code
media: staging: tegra-vde: Support V4L stateless video decoder API
media: staging: tegra-vde: Remove legacy UAPI support

.../media/v4l/ext-ctrls-codec-stateless.rst | 6 +
drivers/staging/media/tegra-vde/Kconfig | 7 +
drivers/staging/media/tegra-vde/Makefile | 2 +-
.../staging/media/tegra-vde/dmabuf-cache.c | 2 +-
drivers/staging/media/tegra-vde/h264.c | 946 +++++++++++++++
drivers/staging/media/tegra-vde/iommu.c | 2 +-
drivers/staging/media/tegra-vde/uapi.h | 73 --
drivers/staging/media/tegra-vde/v4l2.c | 1018 +++++++++++++++++
drivers/staging/media/tegra-vde/vde.c | 945 ++-------------
drivers/staging/media/tegra-vde/vde.h | 121 +-
include/uapi/linux/v4l2-controls.h | 2 +
11 files changed, 2170 insertions(+), 954 deletions(-)
create mode 100644 drivers/staging/media/tegra-vde/h264.c
delete mode 100644 drivers/staging/media/tegra-vde/uapi.h
create mode 100644 drivers/staging/media/tegra-vde/v4l2.c

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2.34.1