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libcamera: pipeline: Support importing buffers

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Add support for importing external buffers in all pipeline handlers.

Use the stream memory type in the pipeline handlers during buffer
allocation to import buffers to or export buffers from the video device.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
This commit is contained in:
Jacopo Mondi
2019-07-04 11:30:52 +02:00
committed by Laurent Pinchart
parent 9ed9d9b3c1
commit b5010e4cee
4 changed files with 51 additions and 14 deletions
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src/libcamera/pipeline/vimc.cpp
+4 -1
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@@ -202,7 +202,10 @@ int PipelineHandlerVimc::allocateBuffers(Camera *camera,
LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
return data->video_->exportBuffers(&stream->bufferPool());
if (stream->memoryType() == InternalMemory)
return data->video_->exportBuffers(&stream->bufferPool());
else
return data->video_->importBuffers(&stream->bufferPool());
}
int PipelineHandlerVimc::freeBuffers(Camera *camera,