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libcamera: pipeline: uvcvideo: enforce stream configuration

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The format requested by configureStreams() should exactly match what is
programmed on the video device. If they do not match the call should
fail as the application in that case will not know what configuration
was actually programmed.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Niklas Söderlund
2019-02-21 00:07:05 +01:00
parent 9a37b4c5a8
commit facb80bc5c
1 changed files with 11 additions and 1 deletions
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12
src/libcamera/pipeline/uvcvideo.cpp
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@@ -84,6 +84,7 @@ int PipelineHandlerUVC::configureStreams(Camera *camera,
std::map<Stream *, StreamConfiguration> &config)
{
StreamConfiguration *cfg = &config[&stream_];
int ret;
LOG(UVC, Debug) << "Configure the camera for resolution "
<< cfg->width << "x" << cfg->height;
@@ -93,7 +94,16 @@ int PipelineHandlerUVC::configureStreams(Camera *camera,
format.height = cfg->height;
format.fourcc = cfg->pixelFormat;
return video_->setFormat(&format);
ret = video_->setFormat(&format);
if (ret)
return ret;
if (format.width != cfg->width ||
format.height != cfg->height ||
format.fourcc != cfg->pixelFormat)
return -EINVAL;
return 0;
}
int PipelineHandlerUVC::allocateBuffers(Camera *camera, Stream *stream)