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_CONTINUOUS_BYTESTREAM, 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. (I now have access to most of the standards, will use that to improve the pixfmt description in the near future). If there are no more comments, then I want to merge patches 1-7 and probably 8 as well (even though I think that one needs more work). Patches 9-11 require that a stateless decoder driver is also updated to use V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF and V4L2_DEC_CMD_FLUSH. Changes since v2: - Fixed typo (CMD_STOP -> CMD_FLUSH) - Updated text to make CMD_FLUSH required for stateless codecs (will need another patch adding helper functions for this DEC_CMD). - Added "It is also only applies to stateful codecs." to the DYN_RESOLUTION description. Changes since v1: - Replace bitstream by bytestream as per comment from Nicolas. - V4L2_FMT_FLAG_HAS_BITSTREAM_PARSER was renamed to V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM. Regards, Hans Alexandre Courbot (1): media: docs-rst: Document m2m stateless video decoder interface Hans Verkuil (4): videodev2.h: add V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM pixfmt-compressed.rst: improve H264/HEVC/MPEG1+2/VP8+9 documentation vb2: add V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF videodev2.h: add V4L2_DEC_CMD_FLUSH 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 | 3 + .../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 + include/media/v4l2-mem2mem.h | 42 + include/media/videobuf2-core.h | 3 + include/media/videobuf2-v4l2.h | 5 + include/uapi/linux/videodev2.h | 20 +- 26 files changed, 2416 insertions(+), 54 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
