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libcamera: v4l2_device: Update dequeued buffer information

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Copy the information from the struct v4l2_buffer when dequeueing the
buffer as applications need this information to make sense of the
captured data.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Niklas Söderlund 2019-01-24 23:34:51 +01:00 • committed by Laurent Pinchart
parent ba4dfa7471
commit e94e52c0cb
3 changed files with 43 additions and 1 deletions
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10
src/libcamera/v4l2_device.cpp
View file

@ -9,6 +9,7 @@
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <unistd.h>
#include <vector>
@ -723,7 +724,14 @@ Buffer *V4L2Device::dequeueBuffer()
if (--queuedBuffersCount_ == 0)
fdEvent_->setEnabled(false);
return &bufferPool_->buffers()[buf.index];
Buffer *buffer = &bufferPool_->buffers()[buf.index];
buffer->bytesused_ = buf.bytesused;
buffer->timestamp_ = buf.timestamp.tv_sec * 1000000000ULL
+ buf.timestamp.tv_usec * 1000ULL;
buffer->sequence_ = buf.sequence;
return buffer;
}
/**