Hi,
This patch set implements region of interest (ROI) ctrls for video
encoder.
One video encoder IP may support the following two ROI configurations or
one of them:
1. configure ROI as a rectangular region, and set a QP offset parameter.
2. configure ROI as a QP map as an array. Each value represents the QP
offset of a block in raster scan order. The block size is determined by
the specific IP.
To achieve this, I made the following change:
1. Add a new ctrl type V4L2_CTRL_TYPE_REGION to describe rectangular ROI
2. Define a ctrl V4L2_CID_MPEG_VIDEO_ROI_MODE to choose ROI
configuration
3. Define 2 ctrl to configure ROI
4. Define a ctrl V4L2_CID_MPEG_VIDEO_ROI_MAP_BLOCK_SIZE to query block
size
I referred the patchset "Implement UVC v1.5 ROI" (https://lwn.net/Articles/953532/)
and pick some patches from it.
Hans Verkuil (1):
v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL
Ming Qian (3):
media: v4l2-ctrls: Add V4L2_CTRL_TYPE_REGION
media: v4l2-ctrls: Add video roi ctrls
media: vivid: Add a video region ctrl
Yunke Cao (2):
media: v4l2_ctrl: Add V4L2_CTRL_TYPE_RECT
media: vivid: Add an rectangle control
.../media/v4l/ext-ctrls-codec.rst | 73 +++++++
.../media/v4l/vidioc-g-ext-ctrls.rst | 30 ++-
.../media/v4l/vidioc-queryctrl.rst | 26 +++
.../media/videodev2.h.rst.exceptions | 5 +
drivers/media/i2c/imx214.c | 4 +-
.../media/platform/qcom/venus/venc_ctrls.c | 9 +-
.../media/test-drivers/vivid/vivid-ctrls.c | 62 ++++++
drivers/media/v4l2-core/v4l2-ctrls-api.c | 54 +++++-
drivers/media/v4l2-core/v4l2-ctrls-core.c | 179 +++++++++++++++---
drivers/media/v4l2-core/v4l2-ctrls-defs.c | 29 +++
drivers/media/v4l2-core/v4l2-ioctl.c | 4 +-
include/media/v4l2-ctrls.h | 40 +++-
include/uapi/linux/v4l2-controls.h | 10 +
include/uapi/linux/videodev2.h | 13 ++
14 files changed, 490 insertions(+), 48 deletions(-)
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2.43.0-rc1