[FFmpeg-devel] [PATCH] VP56: 32-byte align picture width
Sun Jul 13 16:11:56 CEST 2008
Michael Niedermayer <michaelni at gmx.at> writes:
> On Sun, Jul 13, 2008 at 02:13:39PM +0100, Mans Rullgard wrote:
>> The VP5/6 decoder calls put_pixels16() on the chroma planes, so these
>> need 16-byte alignment. Setting luma alignment to 32 achieves this,
>> although alignment of 16 is sufficient for the luma plane.
> Hmm, isnt STRIDE_ALIGN 16 ?
Apparently not on ARM. Changing this makes the problem go away.
> Is some code ignoring STRIDE_ALIGN ?
No, I wasn't aware of it. Nevertheless, dsputil.h promises that the
destination for put_pixels16() will be 16-byte aligned, and this is
simply not true.
mans at mansr.com
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