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| author | Diego Biurrun <diego@biurrun.de> | 2014-02-18 12:02:34 +0100 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2014-07-18 09:58:17 -0700 |
| commit | 913fa85a2c1fcd71802f7decdef5f355e0d9c757 (patch) | |
| tree | d042b72f6e536c4b3c24e18d1a231085b9ac4eb9 /libavcodec | |
| parent | 9e0b29911f1f167381a7dbdfca68bf417b8c767b (diff) | |
| download | ffmpeg-913fa85a2c1fcd71802f7decdef5f355e0d9c757.tar.gz | |
dct-test: Skip indirection for MMX IDCT permutation
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dct-test.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c index 4c64a861f1..f83f5e7425 100644 --- a/libavcodec/dct-test.c +++ b/libavcodec/dct-test.c @@ -128,8 +128,6 @@ static const struct algo idct_tab[] = { #define NB_ITS 20000 #define NB_ITS_SPEED 50000 -static short idct_mmx_perm[64]; - static short idct_simple_mmx_perm[64] = { 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D, 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D, @@ -143,16 +141,6 @@ static short idct_simple_mmx_perm[64] = { static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 }; -static void idct_mmx_init(void) -{ - int i; - - /* the mmx/mmxext idct uses a reordered input, so we patch scan tables */ - for (i = 0; i < 64; i++) { - idct_mmx_perm[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2); - } -} - DECLARE_ALIGNED(16, static int16_t, block)[64]; DECLARE_ALIGNED(8, static int16_t, block1)[64]; @@ -190,7 +178,7 @@ static void permute(int16_t dst[64], const int16_t src[64], int perm) if (perm == MMX_PERM) { for (i = 0; i < 64; i++) - dst[idct_mmx_perm[i]] = src[i]; + dst[(i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2)] = src[i]; } else if (perm == MMX_SIMPLE_PERM) { for (i = 0; i < 64; i++) dst[idct_simple_mmx_perm[i]] = src[i]; @@ -469,7 +457,6 @@ int main(int argc, char **argv) int err = 0; ff_ref_dct_init(); - idct_mmx_init(); for (;;) { c = getopt(argc, argv, "ih4t"); |