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sws: add yuv2yuvX_sse3() 

Code is about 2x as fast as previous

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-23 23:36:06 +02:00
parent f4bf06eb96
commit 9eb867e117
1 changed files with 60 additions and 0 deletions
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60
libswscale/x86/swscale_mmx.c
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@ -176,6 +176,62 @@ void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufI
}
}
static void yuv2yuvX_sse3(const int16_t *filter, int filterSize,
const int16_t **src, uint8_t *dest, int dstW,
const uint8_t *dither, int offset)
{
if (offset) {
__asm__ volatile("movq (%0), %%xmm3\n\t"
"movdqa %%xmm3, %%xmm4\n\t"
"psrlq $24, %%xmm3\n\t"
"psllq $40, %%xmm4\n\t"
"por %%xmm4, %%xmm3\n\t"
:: "r"(dither)
);
} else {
__asm__ volatile("movq (%0), %%xmm3\n\t"
:: "r"(dither)
);
}
__asm__ volatile(
"pxor %%xmm0, %%xmm0\n\t"
"punpcklbw %%xmm0, %%xmm3\n\t"
"psraw $4, %%xmm3\n\t"
"movdqa %%xmm3, %%xmm4\n\t"
"movdqa %%xmm3, %%xmm7\n\t"
"movl %3, %%ecx\n\t"
"mov %0, %%"REG_d" \n\t"\
"mov (%%"REG_d"), %%"REG_S" \n\t"\
".p2align 4 \n\t" /* FIXME Unroll? */\
"1: \n\t"\
"movddup 8(%%"REG_d"), %%xmm0 \n\t" /* filterCoeff */\
"movdqa (%%"REG_S", %%"REG_c", 2), %%xmm2 \n\t" /* srcData */\
"movdqa 16(%%"REG_S", %%"REG_c", 2), %%xmm5 \n\t" /* srcData */\
"add $16, %%"REG_d" \n\t"\
"mov (%%"REG_d"), %%"REG_S" \n\t"\
"test %%"REG_S", %%"REG_S" \n\t"\
"pmulhw %%xmm0, %%xmm2 \n\t"\
"pmulhw %%xmm0, %%xmm5 \n\t"\
"paddw %%xmm2, %%xmm3 \n\t"\
"paddw %%xmm5, %%xmm4 \n\t"\
" jnz 1b \n\t"\
"psraw $3, %%xmm3 \n\t"\
"psraw $3, %%xmm4 \n\t"\
"packuswb %%xmm4, %%xmm3 \n\t"
"movntdq %%xmm3, (%1, %%"REG_c")\n\t"
"add $16, %%"REG_c" \n\t"\
"cmp %2, %%"REG_c" \n\t"\
"movdqa %%xmm7, %%xmm3\n\t"
"movdqa %%xmm7, %%xmm4\n\t"
"mov %0, %%"REG_d" \n\t"\
"mov (%%"REG_d"), %%"REG_S" \n\t"\
"jb 1b \n\t"\
:: "g" (filter),
"r" (dest-offset), "g" ((x86_reg)(dstW+offset)), "m" (offset)
: "%"REG_d, "%"REG_S, "%"REG_c
);
}
#define SCALE_FUNC(filter_n, from_bpc, to_bpc, opt) \
extern void ff_hscale ## from_bpc ## to ## to_bpc ## _ ## filter_n ## _ ## opt( \
SwsContext *c, int16_t *data, \
@ -239,6 +295,10 @@ void ff_sws_init_swScale_mmx(SwsContext *c)
#if HAVE_MMX2
if (cpu_flags & AV_CPU_FLAG_MMX2)
sws_init_swScale_MMX2(c);
if (cpu_flags & AV_CPU_FLAG_SSE3){
if(c->use_mmx_vfilter && !(c->flags & SWS_ACCURATE_RND))
c->yuv2planeX = yuv2yuvX_sse3;
}
#endif
#if HAVE_YASM