[vlc-devel] [vlc-commits] arm_neon i420 -> rgb: Output pitch can be 64 bit aligned

Rémi Denis-Courmont remi at remlab.net
Mon Dec 31 14:35:10 CET 2012


On Mon, 31 Dec 2012 14:00:05 +0100 (CET), git at videolan.org (Asad Mehmood)
wrote:
> vlc | branch: master | Asad Mehmood <asad78611 at googlemail.com> | Mon Dec
> 31 00:56:00 2012 +0000| [0740e5433637c12dab43067b964248b667cda19d] |
> committer: Rafaël Carré
> 
> arm_neon i420 -> rgb: Output pitch can be 64 bit aligned
> 
> When an output picure is requested from a Samsung (exynos?) device
> it is not guarateed to be aligned to 128 bit (4 pixels).

VST with 64-bits alignment is basically useless. IIRC, only 128-bits
alignment brings performance optimizations over unaligned on Cortex A8.

> Signed-off-by: Rafaël Carré <funman at videolan.org>

In current VLC, all planes must be aligned to 128-bits. Filters may fail
if this is not true.

-- 
Rémi Denis-Courmont
Sent from my collocated server



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