Unlike when resolution change on keyframes, dynamic resolution change on inter frames doesn't allow to do a stream off/on sequence because it is need to keep all previous references alive to decode inter frames. This constraint have two main problems: - more memory consumption. - more buffers in use. To solve these issue this series introduce DELETE_BUF ioctl and remove the 32 buffers limit per queue. VP9 conformance tests using fluster give a score of 210/305. The 25 resize inter tests (vp90-2-21-resize_inter_* files) are ok but require to use postprocessor. Kernel branch is available here: https://gitlab.collabora.com/benjamin.gaignard/for-upstream/-/commits/remove_vb2_queue_limit_v3 GStreamer branch to use DELETE_BUF ioctl and testing dynamic resolution change is here: https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/VP9_drc changes in version 3: - Use Xarray API to store allocated video buffers. - No module parameter to limit the number of buffer per queue. - Use Xarray inside Verisilicon driver to store postprocessor buffers and remove VB2_MAX_FRAME limit. - Allow Versilicon driver to change of resolution while streaming - Various fixes the Verisilicon VP9 code to improve fluster score. changes in version 2: - Use a dynamic array and not a list to keep trace of allocated buffers. Not use IDR interface because it is marked as deprecated in kernel documentation. - Add a module parameter to limit the number of buffer per queue. - Add DELETE_BUF ioctl and m2m helpers. Benjamin Gaignard (11): media: videobuf2: Access vb2_queue bufs array through helper functions media: videobuf2: Use Xarray instead of static buffers array media: videobuf2: Remove VB2_MAX_FRAME limit on buffer storage media: videobuf2: Stop define VB2_MAX_FRAME as global media: verisilicon: Refactor postprocessor to store more buffers media: verisilicon: Store chroma and motion vectors offset media: verisilicon: vp9: Use destination buffer height to compute chroma offset media: verisilicon: postproc: Fix down scale test media: verisilicon: vp9: Allow to change resolution while streaming media: v4l2: Add DELETE_BUF ioctl media: v4l2: Add mem2mem helpers for DELETE_BUF ioctl .../userspace-api/media/v4l/user-func.rst | 1 + .../media/v4l/vidioc-delete-buf.rst | 51 ++++ .../media/common/videobuf2/videobuf2-core.c | 275 ++++++++++++++---- .../media/common/videobuf2/videobuf2-v4l2.c | 34 ++- drivers/media/platform/amphion/vdec.c | 1 + drivers/media/platform/amphion/vpu_dbg.c | 22 +- .../platform/mediatek/jpeg/mtk_jpeg_core.c | 6 +- .../vcodec/vdec/vdec_vp9_req_lat_if.c | 4 +- drivers/media/platform/qcom/venus/hfi.h | 2 + drivers/media/platform/st/sti/hva/hva-v4l2.c | 4 + drivers/media/platform/verisilicon/hantro.h | 8 +- .../platform/verisilicon/hantro_g2_vp9_dec.c | 10 +- .../media/platform/verisilicon/hantro_hw.h | 4 +- .../platform/verisilicon/hantro_postproc.c | 114 +++++--- .../media/platform/verisilicon/hantro_v4l2.c | 37 +-- drivers/media/test-drivers/vim2m.c | 1 + drivers/media/test-drivers/visl/visl-dec.c | 28 +- drivers/media/v4l2-core/v4l2-dev.c | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 10 + drivers/media/v4l2-core/v4l2-mem2mem.c | 20 ++ .../staging/media/atomisp/pci/atomisp_ioctl.c | 2 +- drivers/staging/media/ipu3/ipu3-v4l2.c | 2 + include/media/v4l2-ioctl.h | 4 + include/media/v4l2-mem2mem.h | 12 + include/media/videobuf2-core.h | 16 +- include/media/videobuf2-v4l2.h | 15 +- include/uapi/linux/videodev2.h | 2 + 27 files changed, 523 insertions(+), 163 deletions(-) create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-buf.rst -- 2.39.2
