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swscale: arm: fix NEON hscale init

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The NEON hscale function only supports X8 filter sizes and should only
be selected when these are being used. At the moment filterAlign is
set to 8 but in the future when extra NEON assembly for specific sizes is
added they will need to have checks here too.

The immediate usecase for this change is making the hscale checkasm
test easier and without NEON specific edge-cases (x86 already has these
guards).

This applies the same fix from 718c8f9aa5
on the 32 bit arm version of the function, fixing fate-checkasm-sw_scale
there.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Josh de Kock 2020-05-07 12:01:16 +01:00 committed by Martin Storsjö
parent 1187cbf0ff
commit 70b14cc8d6
1 changed files with 4 additions and 1 deletions
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5
libswscale/arm/swscale.c
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@ -34,7 +34,10 @@ av_cold void ff_sws_init_swscale_arm(SwsContext *c)
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
if (c->srcBpc == 8 && c->dstBpc <= 14) {
if (c->srcBpc == 8 && c->dstBpc <= 14 &&
(c->hLumFilterSize % 8) == 0 &&
(c->hChrFilterSize % 8) == 0)
{
c->hyScale = c->hcScale = ff_hscale_8_to_15_neon;
}
if (c->dstBpc == 8) {