This series consolidates various patches/patch series that add features or document memory-to-memory video codec interfaces.
This includes patches adding V4L2_FMT_FLAG_DYN_RESOLUTION, new code adding V4L2_FMT_FLAG_HAS_BITSTREAM_PARSER, new code adding V4L2_DEC_CMD_FLUSH, patches adding V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF (now with documentation) and patches documenting the stateful encoder/decoder and stateless decoder. The stateful encoder documentation is still RFC quality (there are open TODOs, see https://patchwork.kernel.org/cover/10972783/). The stateless decoder documentation is the same as the v5 posted by Alexandre, but with my comments incorporated. Also added are updated pixelformat descriptions. Please review this! I didn't update the MPEG4 format since I'm not sure what to put there. If anyone has access to recent codec standards, then I would really like to have the right references to 'MPEG Picture' and 'Access Unit'. It would be good to just refer to the definition of what a Picture or Access Unit is in the right standards. Changes for the stateful decoder documentation since v4: - In the Decoding section change "multiple ``OUTPUT`` buffers generate one ``CAPTURE`` buffer: timestamp of the ``OUTPUT`` buffer queued last will be copied." to "queued first" since this corresponds to existing implementations. - Document that width and height are required fields in step 4 of the Capture Setup. - Mention the new ENUM_FMT flags. Changes for the stateless decoder documentation since v5: - Document that width and height are required fields in step 4 of the Capture Setup. - Mention the new V4L2_DEC_CMD_FLUSH command to flush the last held capture buffer. This replaces the 'queue an empty buffer' solution. In my view this series is ready to go in, except for the last patch (stateful encoder). Maxime, I didn't add the proposed V4L2_FMT_FLAG_MANUAL_RESOLUTION flag since I think that can go in separately. I also am not 100% happy with that name, although I can't think of a better one. Regards, Hans Alexandre Courbot (1): media: docs-rst: Document m2m stateless video decoder interface Hans Verkuil (6): v4l2-ioctl.c: OR flags in v4l_fill_fmtdesc(), not don't overwrite videodev2.h: add V4L2_FMT_FLAG_HAS_BITSTREAM_PARSER videodev2.h.rst.exceptions: tymecode -> timecode vb2: add V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF videodev2.h: add V4L2_DEC_CMD_FLUSH pixfmt-compressed.rst: improve H264/HEVC/MPEG1+2/VP8+9 documentation Maxime Jourdan (5): videodev2.h: add V4L2_FMT_FLAG_DYN_RESOLUTION media: venus: vdec: flag OUTPUT formats with V4L2_FMT_FLAG_DYN_RESOLUTION media: s5p_mfc_dec: set flags for OUTPUT coded formats media: mtk-vcodec: flag OUTPUT formats with V4L2_FMT_FLAG_DYN_RESOLUTION media: vicodec: set flags for vdec/stateful OUTPUT coded formats Tomasz Figa (2): media: docs-rst: Document memory-to-memory video decoder interface media: docs-rst: Document memory-to-memory video encoder interface Documentation/media/uapi/v4l/buffer.rst | 13 + Documentation/media/uapi/v4l/dev-decoder.rst | 1101 +++++++++++++++++ Documentation/media/uapi/v4l/dev-encoder.rst | 608 +++++++++ Documentation/media/uapi/v4l/dev-mem2mem.rst | 10 +- .../media/uapi/v4l/dev-stateless-decoder.rst | 424 +++++++ .../media/uapi/v4l/pixfmt-compressed.rst | 36 +- Documentation/media/uapi/v4l/pixfmt-v4l2.rst | 10 + Documentation/media/uapi/v4l/v4l2.rst | 12 +- .../media/uapi/v4l/vidioc-decoder-cmd.rst | 52 +- .../media/uapi/v4l/vidioc-dqevent.rst | 11 +- .../media/uapi/v4l/vidioc-encoder-cmd.rst | 51 +- .../media/uapi/v4l/vidioc-enum-fmt.rst | 16 + .../media/uapi/v4l/vidioc-reqbufs.rst | 6 + .../media/videodev2.h.rst.exceptions | 7 +- .../media/common/videobuf2/videobuf2-v4l2.c | 8 +- .../platform/mtk-vcodec/mtk_vcodec_dec.c | 4 + .../platform/mtk-vcodec/mtk_vcodec_drv.h | 1 + drivers/media/platform/qcom/venus/core.h | 1 + drivers/media/platform/qcom/venus/vdec.c | 11 + .../media/platform/s5p-mfc/s5p_mfc_common.h | 1 + drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 18 + drivers/media/platform/vicodec/vicodec-core.c | 3 + drivers/media/v4l2-core/v4l2-ioctl.c | 2 +- include/media/v4l2-mem2mem.h | 42 + include/media/videobuf2-core.h | 3 + include/media/videobuf2-v4l2.h | 5 + include/uapi/linux/videodev2.h | 20 +- 27 files changed, 2419 insertions(+), 57 deletions(-) create mode 100644 Documentation/media/uapi/v4l/dev-decoder.rst create mode 100644 Documentation/media/uapi/v4l/dev-encoder.rst create mode 100644 Documentation/media/uapi/v4l/dev-stateless-decoder.rst -- 2.20.1
