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faster hadamard transform

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Originally committed as revision 1707 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-03-26 11:29:45 +00:00
parent 3b0da3f92f
commit 8e0a3db735
1 changed files with 115 additions and 20 deletions
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135
libavcodec/i386/dsputil_mmx.c
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@ -583,26 +583,21 @@ static void diff_bytes_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
for(; i<w; i++)
dst[i+0] = src1[i+0]-src2[i+0];
}
#define LBUTTERFLY(a,b)\
"paddw " #b ", " #a " \n\t"\
"paddw " #b ", " #b " \n\t"\
"psubw " #a ", " #b " \n\t"
#define LBUTTERFLY2(a1,b1,a2,b2)\
"paddw " #b1 ", " #a1 " \n\t"\
"paddw " #b2 ", " #a2 " \n\t"\
"paddw " #b1 ", " #b1 " \n\t"\
"paddw " #b2 ", " #b2 " \n\t"\
"psubw " #a1 ", " #b1 " \n\t"\
"psubw " #a2 ", " #b1 " \n\t"
#define HADAMARD48\
LBUTTERFLY(%%mm0, %%mm1)\
LBUTTERFLY(%%mm2, %%mm3)\
LBUTTERFLY(%%mm4, %%mm5)\
LBUTTERFLY(%%mm6, %%mm7)\
\
LBUTTERFLY(%%mm0, %%mm2)\
LBUTTERFLY(%%mm1, %%mm3)\
LBUTTERFLY(%%mm4, %%mm6)\
LBUTTERFLY(%%mm5, %%mm7)\
\
LBUTTERFLY(%%mm0, %%mm4)\
LBUTTERFLY(%%mm1, %%mm5)\
LBUTTERFLY(%%mm2, %%mm6)\
LBUTTERFLY(%%mm3, %%mm7)
LBUTTERFLY2(%%mm0, %%mm1, %%mm2, %%mm3)\
LBUTTERFLY2(%%mm4, %%mm5, %%mm6, %%mm7)\
LBUTTERFLY2(%%mm0, %%mm2, %%mm1, %%mm3)\
LBUTTERFLY2(%%mm4, %%mm6, %%mm5, %%mm7)\
LBUTTERFLY2(%%mm0, %%mm4, %%mm1, %%mm5)\
LBUTTERFLY2(%%mm2, %%mm6, %%mm3, %%mm7)\
#define MMABS(a,z)\
"pxor " #z ", " #z " \n\t"\
@ -617,12 +612,22 @@ static void diff_bytes_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
"psubw " #z ", " #a " \n\t"\
"paddusw " #a ", " #sum " \n\t"
#define MMABS_MMX2(a,z)\
"pxor " #z ", " #z " \n\t"\
"psubw " #a ", " #z " \n\t"\
"pmaxsw " #z ", " #a " \n\t"
#define MMABS_SUM_MMX2(a,z, sum)\
"pxor " #z ", " #z " \n\t"\
"psubw " #a ", " #z " \n\t"\
"pmaxsw " #z ", " #a " \n\t"\
"paddusw " #a ", " #sum " \n\t"
#define SBUTTERFLY(a,b,t,n)\
"movq " #a ", " #t " \n\t" /* abcd */\
"punpckl" #n " " #b ", " #a " \n\t" /* aebf */\
"punpckh" #n " " #b ", " #t " \n\t" /* cgdh */\
#define TRANSPOSE4(a,b,c,d,t)\
SBUTTERFLY(a,b,t,wd) /* a=aebf t=cgdh */\
SBUTTERFLY(c,d,b,wd) /* c=imjn b=kolp */\
@ -726,7 +731,94 @@ static int hadamard8_diff_mmx(void *s, uint8_t *src1, uint8_t *src2, int stride)
return sum&0xFFFF;
}
static int hadamard8_diff_mmx2(void *s, uint8_t *src1, uint8_t *src2, int stride){
uint64_t temp[16] __align8;
int sum=0;
diff_pixels_mmx((DCTELEM*)temp, src1, src2, stride);
asm volatile(
LOAD4(0 , %%mm0, %%mm1, %%mm2, %%mm3)
LOAD4(64, %%mm4, %%mm5, %%mm6, %%mm7)
HADAMARD48
"movq %%mm7, 112(%1) \n\t"
TRANSPOSE4(%%mm0, %%mm1, %%mm2, %%mm3, %%mm7)
STORE4(0 , %%mm0, %%mm3, %%mm7, %%mm2)
"movq 112(%1), %%mm7 \n\t"
TRANSPOSE4(%%mm4, %%mm5, %%mm6, %%mm7, %%mm0)
STORE4(64, %%mm4, %%mm7, %%mm0, %%mm6)
LOAD4(8 , %%mm0, %%mm1, %%mm2, %%mm3)
LOAD4(72, %%mm4, %%mm5, %%mm6, %%mm7)
HADAMARD48
"movq %%mm7, 120(%1) \n\t"
TRANSPOSE4(%%mm0, %%mm1, %%mm2, %%mm3, %%mm7)
STORE4(8 , %%mm0, %%mm3, %%mm7, %%mm2)
"movq 120(%1), %%mm7 \n\t"
TRANSPOSE4(%%mm4, %%mm5, %%mm6, %%mm7, %%mm0)
"movq %%mm7, %%mm5 \n\t"//FIXME remove
"movq %%mm6, %%mm7 \n\t"
"movq %%mm0, %%mm6 \n\t"
// STORE4(72, %%mm4, %%mm7, %%mm0, %%mm6) //FIXME remove
LOAD4(64, %%mm0, %%mm1, %%mm2, %%mm3)
// LOAD4(72, %%mm4, %%mm5, %%mm6, %%mm7)
HADAMARD48
"movq %%mm7, 64(%1) \n\t"
MMABS_MMX2(%%mm0, %%mm7)
MMABS_SUM_MMX2(%%mm1, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm2, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm3, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm4, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm5, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm6, %%mm7, %%mm0)
"movq 64(%1), %%mm1 \n\t"
MMABS_SUM_MMX2(%%mm1, %%mm7, %%mm0)
"movq %%mm0, 64(%1) \n\t"
LOAD4(0 , %%mm0, %%mm1, %%mm2, %%mm3)
LOAD4(8 , %%mm4, %%mm5, %%mm6, %%mm7)
HADAMARD48
"movq %%mm7, (%1) \n\t"
MMABS_MMX2(%%mm0, %%mm7)
MMABS_SUM_MMX2(%%mm1, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm2, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm3, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm4, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm5, %%mm7, %%mm0)
MMABS_SUM_MMX2(%%mm6, %%mm7, %%mm0)
"movq (%1), %%mm1 \n\t"
MMABS_SUM_MMX2(%%mm1, %%mm7, %%mm0)
"movq 64(%1), %%mm1 \n\t"
MMABS_SUM_MMX2(%%mm1, %%mm7, %%mm0)
"movq %%mm0, %%mm1 \n\t"
"psrlq $32, %%mm0 \n\t"
"paddusw %%mm1, %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"psrlq $16, %%mm0 \n\t"
"paddusw %%mm1, %%mm0 \n\t"
"movd %%mm0, %0 \n\t"
: "=r" (sum)
: "r"(temp)
);
return sum&0xFFFF;
}
WARPER88_1616(hadamard8_diff_mmx, hadamard8_diff16_mmx)
WARPER88_1616(hadamard8_diff_mmx2, hadamard8_diff16_mmx2)
#define put_no_rnd_pixels8_mmx(a,b,c,d) put_pixels8_mmx(a,b,c,d)
#define put_no_rnd_pixels16_mmx(a,b,c,d) put_pixels16_mmx(a,b,c,d)
@ -1556,6 +1648,9 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
c->avg_pixels_tab[1][1] = avg_pixels8_x2_mmx2;
c->avg_pixels_tab[1][2] = avg_pixels8_y2_mmx2;
c->hadamard8_diff[0]= hadamard8_diff16_mmx2;
c->hadamard8_diff[1]= hadamard8_diff_mmx2;
if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_mmx2;
c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_mmx2;