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authorKieran Bingham <kieran.bingham@ideasonboard.com>2021-03-02 22:38:27 +0000
committerKieran Bingham <kieran.bingham@ideasonboard.com>2021-03-24 22:20:06 +0000
commit1d8cc0a3ec7dc04958fec12f4fdd05aabd2f7d06 (patch)
tree6d4491162bd8f365239b197e3e6f69e4dccce291 /src/android/metadata
parent500e99174aeb3741023ec1a217c4ad5614511eef (diff)
libcamera: v4l2_videodevice: Prevent queueing buffers without a cache
The V4l2 buffer cache allows us to map incoming buffers to an instance of the V4L2 buffer required to actually queue. If the cache_ is not available, then the buffers required to allow queuing to a device have been released, and this indicates an issue at the pipeline handler. This could be a common mistake, as it could happen if a pipeline handler always requeues buffers to the device after they complete, without checking if they are cancelled. Catch any invalid queueing of buffers to the V4L2 video device when resources have been released by adding a Fatal log message to highlight the error during development. Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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