libavcodec/qsvdec: remove redundant decodeHeader()

Since ffmpeg-qsv uses return value to reinit decoder, it doesn't need to
decode header each time. Move qsv_decode_header's position so that
it will be called only if codec needed to be reinitialized.
Rearrange the code of flushing decoder and re-init decoder operation.
Remove the buffer_count and use the got_frame to decide whether the
decoder is drain.

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Guangxin Xu <guangxin.xu@intel.com>

0 files changed, 0 insertions, 0 deletions