talos-op-linux/Documentation/media/videodev2.h.rst.exceptions, branch master

media: v4l: Add definitions for HEVC stateless decoding

2019-10-24T21:09:18+00:00

This introduces the required definitions for HEVC decoding support with stateless VPUs. The controls associated to the HEVC slice format provide the required meta-data for decoding slices extracted from the bitstream. They are not exported to the public V4L2 API since reworking this API will likely be needed for covering various use-cases and new hardware. Multi-slice decoding is exposed as a valid decoding mode to match current H.264 support but it is not yet implemented. The interface comes with the following limitations: * No custom quantization matrices (scaling lists); * Support for a single temporal layer only; * No slice entry point offsets support; * No conformance window support; * No VUI parameters support; * No support for SPS extensions: range, multilayer, 3d, scc, 4 bits; * No support for PPS extensions: range, multilayer, 3d, scc, 4 bits. Signed-off-by: Paul Kocialkowski [hverkuil-cisco@xs4all.nl: use 1ULL in flags defines in hevc-ctrls.h] Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: videodev2.h: add V4L2_DEC_CMD_FLUSH

2019-10-21T10:39:50+00:00

Add this new V4L2_DEC_CMD_FLUSH decoder command and document it. Reviewed-by: Boris Brezillon Reviewed-by: Alexandre Courbot Signed-off-by: Hans Verkuil Signed-off-by: Jernej Skrabec Signed-off-by: Mauro Carvalho Chehab

media: Documentation: media: Document V4L2_CTRL_TYPE_AREA

2019-10-10T14:36:54+00:00

A struct v4l2_area containing the width and the height of a rectangular area. Reviewed-by: Jacopo Mondi Reviewed-by: Philipp Zabel Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: videodev2.h: add V4L2_FMT_FLAG_DYN_RESOLUTION

2019-08-19T17:56:31+00:00

Add an enum_fmt format flag to specifically tag coded formats where dynamic resolution switching is supported by the device. This is useful for some codec drivers that can support dynamic resolution switching for one or more of their listed coded formats. It allows userspace to know whether it should extract the video parameters itself, or if it can rely on the device to send V4L2_EVENT_SOURCE_CHANGE when such changes are detected. Signed-off-by: Maxime Jourdan Reviewed-by: Paul Kocialkowski Reviewed-by: Alexandre Courbot Acked-by: Tomasz Figa Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: videodev2.h: add V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM

2019-08-19T17:41:45+00:00

Add an enum_fmt format flag to specifically tag coded formats where full bytestream parsing is supported by the device. Some stateful decoders are capable of fully parsing a bytestream, but others require that userspace pre-parses the bytestream into frames or fields (see the corresponding pixelformat descriptions for details). If this flag is set, then this pre-parsing step is not required (but still possible, of course). Signed-off-by: Hans Verkuil Reviewed-by: Paul Kocialkowski Reviewed-by: Alexandre Courbot Signed-off-by: Mauro Carvalho Chehab

media: videodev2.h.rst.exceptions: tymecode -> timecode

2019-07-30T16:12:25+00:00

Fix typo. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: uapi: Add H264 low-level decoder API compound controls.

2019-05-29T10:25:09+00:00

Stateless video codecs will require both the H264 metadata and slices in order to be able to decode frames. This introduces the definitions for the structures used to pass the metadata from the userspace to the kernel. [hverkuil-cisco@xs4all.nl: add space after . in ".For"] [hverkuil-cisco@xs4all.nl: sync v4l2_ctrl_h264_decode_params struct layout with header] Co-developed-by: Maxime Ripard Reviewed-by: Paul Kocialkowski Reviewed-by: Tomasz Figa Signed-off-by: Pawel Osciak Signed-off-by: Guenter Roeck Signed-off-by: Maxime Ripard Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: docs-rst: v4l: Document V4L2_BUF_TYPE_META_OUTPUT interface

2018-12-14T10:12:11+00:00

Document the interface for metadata output, including V4L2_BUF_TYPE_META_OUTPUT buffer type and V4L2_CAP_META_OUTPUT capability bits. Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Reviewed-by: Tomasz Figa Tested-by: Tian Shu Qiu Signed-off-by: Mauro Carvalho Chehab

media: docs: brainless mass add SPDX headers to all media files

2018-12-05T15:40:34+00:00

All Documentation files outside the uAPI are all licensed with, at least, GPL 2.0. So, mark them as such. The ondes at media/uapi are at least GFDL 1.1+. Signed-off-by: Mauro Carvalho Chehab

Merge tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2018-10-31T17:53:29+00:00

Pull new experimental media request API from Mauro Carvalho Chehab: "A new media request API This API is needed to support device drivers that can dynamically change their parameters for each new frame. The latest versions of Google camera and codec HAL depends on such feature. At this stage, it supports only stateless codecs. It has been discussed for a long time (at least over the last 3-4 years), and we finally reached to something that seem to work. This series contain both the API and core changes required to support it and a new m2m decoder driver (cedrus). As the current API is still experimental, the only real driver using it (cedrus) was added at staging[1]. We intend to keep it there for a while, in order to test the API. Only when we're sure that this API works for other cases (like encoders), we'll move this driver out of staging and set the API into a stone. [1] We added support for the vivid virtual driver (used only for testing) to it too, as it makes easier to test the API for the ones that don't have the cedrus hardware" * tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (53 commits) media: dt-bindings: Document the Rockchip VPU bindings media: platform: Add Cedrus VPU decoder driver media: dt-bindings: media: Document bindings for the Cedrus VPU driver media: v4l: Add definition for the Sunxi tiled NV12 format media: v4l: Add definitions for MPEG-2 slice format and metadata media: videobuf2-core: Rework and rename helper for request buffer count media: v4l2-ctrls.c: initialize an error return code with zero media: v4l2-compat-ioctl32.c: add missing documentation for a field media: media-request: update documentation media: media-request: EPERM -> EACCES/EBUSY media: v4l2-ctrls: improve media_request_(un)lock_for_update media: v4l2-ctrls: use media_request_(un)lock_for_access media: media-request: add media_request_(un)lock_for_access media: vb2: set reqbufs/create_bufs capabilities media: videodev2.h: add new capabilities for buffer types media: buffer.rst: only set V4L2_BUF_FLAG_REQUEST_FD for QBUF media: v4l2-ctrls: return -EACCES if request wasn't completed media: media-request: return -EINVAL for invalid request_fds media: vivid: add request support media: vivid: add mc ...