[FFmpeg-devel] [PATCH 09/18] avcodec/hevcdec: Add stat_coeffs to HEVCABACState

[Andreas Rheinhardt]

Andreas Rheinhardt:
> Anton Khirnov:
> c) The current state of affairs is btw weird: Given that the secondary
> HEVCContexts are overwritten by the main HEVCContext in
> hls_slice_data_wpp, the rice state that every HEVCContext starts with is
> given by the state of the first HEVCContext. And which row (of the last
> picture) this corresponds to depends upon the number of slice threads in
> use. This might cause problems if dependent_slice_segment_flag is enabled.
> 

kvazaar allows to create files with dependent_slice_segment_flag == 1;
but it puts one row into one slice and so the above issue would probably
not manifest itself. The caveat "probably" is necessary, because
decoding such files with slice threading leads to "entry_point_offset
table is corrupted" errors (which is probably a decoder bug).

- Andreas