From 913fa85a2c1fcd71802f7decdef5f355e0d9c757 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Tue, 18 Feb 2014 12:02:34 +0100 Subject: [PATCH] dct-test: Skip indirection for MMX IDCT permutation --- libavcodec/dct-test.c | 15 +-------------- 1 file changed, 1 insertion(+), 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");