[FFmpeg-devel] H.264 decoder calls fill_rectangle() with unaligned buffers

Måns Rullgård mans
Mon Jul 14 15:58:18 CEST 2008

Michael Niedermayer wrote:
> On Mon, Jul 14, 2008 at 12:36:47AM +0100, M?ns Rullg?rd wrote:
>> If STRIDE_ALIGN is set to 16, the H.264 decoder will call
>> fill_rectangle() with buffer addresses failing the alignment assert()
>> at the top of the function.  This obviously does no harm to this
>> function, so I'm not sure which is incorrect, the assert() or the
>> calling code.
> And i am not sure without knowing what that calling code is.

Sorry, I forgot to mention.  It can happen with any of the
fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4)
and similar calls where width*size > 8, for instance the one
on line 4784 of h264.c.

M?ns Rullg?rd
mans at mansr.com

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