---
libavfilter/x86/vf_spp.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libavfilter/x86/vf_spp.c b/libavfilter/x86/vf_spp.c
index 45a9eb0..7d5da61 100644
--- a/libavfilter/x86/vf_spp.c
+++ b/libavfilter/x86/vf_spp.c
@@ -21,6 +21,7 @@
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
+#include "libavutil/crc.h"
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavfilter/vf_spp.h"
@@ -223,10 +224,15 @@ av_cold void ff_spp_init_x86(SPPContext *s)
int cpu_flags = av_get_cpu_flags();
if (cpu_flags & AV_CPU_FLAG_MMX) {
+ static const uint32_t mmx_idct_perm_crc = 0xe5e8adc4;
+ uint32_t idct_perm_crc =
+ av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,
+ s->dct->idct_permutation,
+ sizeof(s->dct->idct_permutation));
int64_t bps;
s->store_slice = store_slice_mmx;
av_opt_get_int(s->dct, "bits_per_sample", 0, &bps);
- if (bps <= 8) {
+ if (bps <= 8 && idct_perm_crc == mmx_idct_perm_crc) {
switch (s->mode) {
case 0: s->requantize = hardthresh_mmx; break;
case 1: s->requantize = softthresh_mmx; break;
--
2.8.1
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