The goal of this series is to let userland applications enumerate all the supported pixels formats of a stateless decoder without setting all the possible codec-dependent control. That offer a simplest solution for applications to discover supported pixels formats and possibly let them doing smarter choice between stateless decoders. An example of how it can be used in GStreamer to discover the supported pixels formats for stateless decoder is available here: https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/v4l2codecs_enum_all_supported_formats?ref_type=heads changes in version 4: - Explicitly document that the new flags are targeting mem2mem devices. changes in version 3: - Add a flag to inform userspace application that driver as take care of the flag. changes in version 2: - Clarify documentation. - Only keep V4L2_FMT_FLAG_ALL_FORMATS flag in ioctl. Benjamin Benjamin Gaignard (2): media: videodev2: Add flags to unconditionnaly enumerate pixels formats media: verisilicon: Use V4L2_FMT_FLAG_ENUM_ALL_FORMATS flag .../media/v4l/dev-stateless-decoder.rst | 6 ++++++ .../userspace-api/media/v4l/vidioc-enum-fmt.rst | 11 +++++++++++ .../media/videodev2.h.rst.exceptions | 2 ++ drivers/media/platform/verisilicon/hantro_v4l2.c | 16 +++++++++++++--- drivers/media/v4l2-core/v4l2-ioctl.c | 3 +++ include/uapi/linux/videodev2.h | 2 ++ 6 files changed, 37 insertions(+), 3 deletions(-) -- 2.43.0
