---
libavfilter/x86/vf_spp.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/libavfilter/x86/vf_spp.c b/libavfilter/x86/vf_spp.c
index 45a9eb0..8e3c820 100644
--- a/libavfilter/x86/vf_spp.c
+++ b/libavfilter/x86/vf_spp.c
@@ -217,6 +217,17 @@ static void store_slice_mmx(uint8_t *dst, const int16_t
*src,
#endif /* HAVE_MMX_INLINE */
+static const uint8_t simple_mmx_permutation[64] = {
+ 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
+ 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
+ 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
+ 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
+ 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
+ 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
+ 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
+ 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
+};
+
av_cold void ff_spp_init_x86(SPPContext *s)
{
#if HAVE_MMX_INLINE
@@ -226,7 +237,9 @@ av_cold void ff_spp_init_x86(SPPContext *s)
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 &&
+ !memcmp(s->dct->idct_permutation, simple_mmx_permutation,
+ sizeof(simple_mmx_permutation))) {
switch (s->mode) {
case 0: s->requantize = hardthresh_mmx; break;
case 1: s->requantize = softthresh_mmx; break;
--
2.8.1
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