media: coda: flush bitstream ring buffer on decoder restart

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The bitstream ringbuffer might be in an underrun state after draining,
or it might still contain unread data if the previous decoder stop
command was flagged as immediate. Flush the bitstream ring buffer
during V4L2_DEC_CMD_START to get into a well defined state. Also fill
the bitstream with buffers that have been queued during draining,
to resume decoding immediately.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Philipp Zabel 2019-06-18 12:45:21 -04:00 • committed by Mauro Carvalho Chehab

parent f74c0a29ec

commit e7fd95849b

3 changed files with 28 additions and 0 deletions

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20

drivers/media/platform/coda/coda-bit.c

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7

drivers/media/platform/coda/coda-common.c

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1

drivers/media/platform/coda/coda.h

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