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swscale: fix NEON hscale init 

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).

Signed-off-by: Josh de Kock <josh@itanimul.li>
This commit is contained in:
Josh de Kock 2020-05-07 12:01:16 +01:00
parent b18fd2b95b
commit 718c8f9aa5
1 changed files with 4 additions and 1 deletions
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5
libswscale/aarch64/swscale.c
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@ -34,7 +34,10 @@ av_cold void ff_sws_init_swscale_aarch64(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) {