Le mardi 15 février 2011 03:55:44, Burkhard Plaum a écrit :
> Not yet, but a function gavl_video_frame_is_aligned() would be easy to
> write. Just cast all plane pointers to long and check if they are
> multiples of 16, then check if all strides are multiples of 16.
>
> In videoframe.c there is a macro ALIGNMENT_BYTES which should be used for
> the case the alignment is changed in a future version.
>
> You can do that if you want.
Thanks for the details! Does the following transcribes it ?
static inline int gavl_video_frame_is_aligned(gavl_video_frame_t *vf, int
planes)
{
int i;
for (i = 0; i < planes; i++)
{
if (((long)vf->planes[i] % ALIGNMENT_BYTES != 0))
return 0;
if (((long)vf->strides[i] % ALIGNMENT_BYTES != 0))
return 0;
}
return 1;
}
Romain
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