diff options
Diffstat (limited to 'media/libtheora/lib/x86/mmxidct.c')
| -rw-r--r-- | media/libtheora/lib/x86/mmxidct.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/media/libtheora/lib/x86/mmxidct.c b/media/libtheora/lib/x86/mmxidct.c index 8d61bdfb16..b8e3077066 100644 --- a/media/libtheora/lib/x86/mmxidct.c +++ b/media/libtheora/lib/x86/mmxidct.c @@ -11,7 +11,7 @@ ******************************************************************** function: - last mod: $Id: mmxidct.c 17446 2010-09-23 20:06:20Z tterribe $ + last mod: $Id$ ********************************************************************/ @@ -284,6 +284,7 @@ "#end OC_COLUMN_IDCT\n\t" \ static void oc_idct8x8_slow_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64]){ + int i; /*This routine accepts an 8x8 matrix, but in partially transposed form. Every 4x4 block is transposed.*/ __asm__ __volatile__( @@ -313,18 +314,15 @@ static void oc_idct8x8_slow_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64]){ :[x]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64), [c]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128) ); - if(_x!=_y){ - int i; - __asm__ __volatile__("pxor %%mm0,%%mm0\n\t"::); - for(i=0;i<4;i++){ - __asm__ __volatile__( - "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x08,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x18,x)"\n\t" - :[x]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_x+16*i,16) - ); - } + __asm__ __volatile__("pxor %%mm0,%%mm0\n\t"::); + for(i=0;i<4;i++){ + __asm__ __volatile__( + "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x08,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x18,x)"\n\t" + :[x]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_x+16*i,16) + ); } } @@ -514,16 +512,14 @@ static void oc_idct8x8_10_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64]){ :[x]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64), [c]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128) ); - if(_x!=_y){ - __asm__ __volatile__( - "pxor %%mm0,%%mm0\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x20,x)"\n\t" - "movq %%mm0,"OC_MEM_OFFS(0x30,x)"\n\t" - :[x]"+m"OC_ARRAY_OPERAND(ogg_int16_t,_x,28) - ); - } + __asm__ __volatile__( + "pxor %%mm0,%%mm0\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x20,x)"\n\t" + "movq %%mm0,"OC_MEM_OFFS(0x30,x)"\n\t" + :[x]"+m"OC_ARRAY_OPERAND(ogg_int16_t,_x,28) + ); } /*Performs an inverse 8x8 Type-II DCT transform. |