media: venus: make decoder compliant with stateful codec API

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This refactors code for start/stop streaming vb2 operations and
adds a state machine handling similar to the one in stateful codec
API documentation. One major change is that now the HFI session is
started on STREAMON(OUTPUT) and stopped on REQBUF(OUTPUT,count=0),
during that time STREAMOFF(CAP,OUT) just flush buffers but doesn't
stop the session. The other major change is that now the capture
and output queues are completely separated.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Stanimir Varbanov 2019-01-17 07:43:31 -02:00 • committed by Mauro Carvalho Chehab

parent be76f150bc

commit beac82904a

3 changed files with 433 additions and 132 deletions

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23

drivers/media/platform/qcom/venus/core.h

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23

drivers/media/platform/qcom/venus/helpers.c

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561

drivers/media/platform/qcom/venus/vdec.c

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