This patchset adds support for Hantro G1 VP8 stateless decoding, as available on RK3288 SoC. In order to support VP8 stateless decoding, a new pixel format is introduced V4L2_PIX_FMT_VP8_FRAME, to be used with a new control V4L2_CID_MPEG_VIDEO_VP8_FRAME_HEADER. As suggested by Boris on this new version of the uAPI all the structures and fields have 8-bytes alignment. In addition, I've checked once again the VP8 spec [1] and did a few changes: * Moved 1-bit fields to a bit in the appropriate flags fields. * Dropped dequant_factors[4][3][2], I really couldn't find this field or anything similar in the spec. It's not mentioned anywhere in Chromium or FFMPEG, so I decided to drop it. I have verified the current uAPI and it now matches the VP8 specification completely, with the exception of the "macroblock_bit_offset" field. This field is present in VAAPI's VP8 interface as "macroblock_offset" and is required to find the start of the first macroblock. [1] https://www.rfc-editor.org/rfc/rfc6386.html [2] http://intel.github.io/libva/va__dec__vp8_8h_source.html Thanks, Ezequiel Changes from v1: * Move 1-bit fields to flags in the respective structures. * Add padding fields to make all structures 8-byte aligned. * Reorder fields where needed to avoid padding as much as possible. * Fix documentation as needed. * Place operators at the end of each line, as suggested by Boris. Changes from RFC: * Verify the various ABIs. * Move entropy coder state fields to a struct. * Move key_frame field to the flags. * Remove unneeded first_part_offset field. * Add documentation. As before, the ABI has been verified with Maxime Ripard's tools: https://gitlab.collabora.com/ezequiel/v4l2-ctrl-abi-check Pawel Osciak (1): media: uapi: Add VP8 stateless decoder API ZhiChao Yu (1): media: hantro: Add support for VP8 decoding on rk3288 Documentation/media/uapi/v4l/biblio.rst | 10 + .../media/uapi/v4l/ext-ctrls-codec.rst | 323 ++++++++++ .../media/uapi/v4l/pixfmt-compressed.rst | 20 + drivers/media/v4l2-core/v4l2-ctrls.c | 8 + drivers/media/v4l2-core/v4l2-ioctl.c | 1 + drivers/staging/media/hantro/Makefile | 4 +- drivers/staging/media/hantro/hantro.h | 5 + drivers/staging/media/hantro/hantro_drv.c | 6 + .../staging/media/hantro/hantro_g1_vp8_dec.c | 552 ++++++++++++++++++ drivers/staging/media/hantro/hantro_hw.h | 17 + drivers/staging/media/hantro/hantro_v4l2.c | 1 + drivers/staging/media/hantro/hantro_vp8.c | 188 ++++++ drivers/staging/media/hantro/rk3288_vpu_hw.c | 22 +- include/media/v4l2-ctrls.h | 3 + include/media/vp8-ctrls.h | 110 ++++ 15 files changed, 1268 insertions(+), 2 deletions(-) create mode 100644 drivers/staging/media/hantro/hantro_g1_vp8_dec.c create mode 100644 drivers/staging/media/hantro/hantro_vp8.c create mode 100644 include/media/vp8-ctrls.h -- 2.20.1
