[vlc-devel] [PATCH] arm_neon: YUV->RGBA Only allow pitch to be a multiple of 16 on output
xilasz at gmail.com
Fri Feb 10 13:25:57 CET 2012
> I still think it should check the pitch and not the width.
> Also since height is incremented by 2 in the asm I think it should also
> check for height % 2.
is it even possible to have i420 frames which are not mutliples of 2 ?
2012/2/10 Rémi Denis-Courmont <remi at remlab.net>
> On Fri, 10 Feb 2012 12:22:38 +0000, Asad Mehmood
> <asad78611 at googlemail.com>
> >> The same issue still exists, if you have a width of 520 for instance,
> >> it's a
> >> multiple of 4, but not a multiple of 16.
> >> It will crash on your device.
> > I might have misunderstood this ...
> > But I though that if the width was a multiple of 4 for the output the
> > pitch would be a multiple of 16 in RGBA space.
> > e.g. A width of 520 will have a pitch of 2080?
> You seem to assume that
> pitch == pixel_width * bytes_per_pixel
> while actually:
> pitch >= pixel_width * bytes_per_pixel
> Rémi Denis-Courmont
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