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Make sure the variable won't be use uninitialized and silent the
warning.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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When capturing n image with p buffers, dequeued buffers don't need to be
requeued in the last n - p iterations. Don't requeue them by default,
and add a --requeue-last option to force the old behaviour.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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To differentiate between identically named devices, print the bus info
reported by VIDIOC_QUERYCAP.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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If only one buffer was processed the performance measurement calculation
caused a division by zero. Do not do show measurements if they are bad.
Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
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Instead of filling video output buffers with 0s, generate and user a
test pattern.
If the -F argument is given, the test pattern is read from the specified
file. The file size must be at equal to or bigger than the image size.
If the -F argument is not given, a basic test pattern is generated
automatically. Every byte is set to the sum of its X and Y coordinates.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
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The long --capture and --file options have an optional argument, fix the
short versions.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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For driver testing purpose the --offset option can be used to modify the
userspace buffers alignment. Instead of a fixed page-boundary alignment,
buffers can now be aligned to a fixed offset starting to the beginning
of the page.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Userspace buffers size needs to be passed to drivers on VIDIOC_QBUF. Set
the v4l2_buffer::length field to the size of the allocated buffer before
calling VIDIOC_QBUF.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Some devices need userspace buffers to be page-aligned. Use the
posix_memalign function instead of malloc to allocate page-aligned
buffers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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For uncompressed formats in capture devices, the v4l2_buffer::bytesused
field should have the same value as the v4l2_pix_format::sizeimage field
reported by the VIDIOC_G_FMT ioctl.
Print a warning on VIDIOC_DQBUG when the values don't match.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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