Support CRA random access decoding - #98
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Signed-off-by: KP Choi <kpchoi@users.noreply.github.com>
Signed-off-by: KP Choi <kpchoi@users.noreply.github.com>
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A CRA picture as the first picture of a stream (e.g. after seeking)
currently fails: picture buffer exhaustion in
xevdm_picman_get_empty_pic()because
poc_next_outputstays 0, and leading pictures referencing picturespreceding the CRA.
Detect a CRA (non-IDR I slice) as the first picture, flush the DPB and start
output ordering from the CRA picture itself, and skip leading pictures
(POC < CRA POC) which cannot be decoded.