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| author | Naushir Patuck <naush@raspberrypi.com> | 2020-09-18 10:42:27 +0100 |
|---|---|---|
| committer | Niklas Söderlund <niklas.soderlund@ragnatech.se> | 2020-09-21 13:10:48 +0200 |
| commit | 2df7bf168105d02e7f2cb8090938d58eccd208f1 (patch) | |
| tree | 711fff9f67387d49015721c75894e7f47af043b1 /Documentation/docs.rst | |
| parent | 3e7ee080d6dcc3f674ccdd14e08b7cf25df06ddd (diff) | |
libcamera: pipeline: raspberrypi: Rework stream buffer logic for zero-copy
Stop using v4l2_videodevice::allocateBuffer() for internal buffers and
instead export/import all buffers. This allows the pipeline to return
any stream buffer requested by the application as zero-copy.
Advertise the Unicam Image stream as the RAW capture stream now.
The RPiStream object now maintains a new list of buffers that are
available to queue into a device. This is needed to distinguish between
FrameBuffers allocated for internal use vs externally provided buffers.
When a Request comes in, if a buffer is not provided for an exported
stream, we re-use a buffer from this list.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Diffstat (limited to 'Documentation/docs.rst')
0 files changed, 0 insertions, 0 deletions