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mix21to2 & mix21toS in SSE 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3740 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2001-12-25 17:29:12 +00:00
parent 26e195ff89
commit 1c6fe45189
1 changed files with 43 additions and 0 deletions
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43
liba52/downmix.c
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@ -454,11 +454,32 @@ static void mix21to2 (sample_t * left, sample_t * right, sample_t bias)
int i;
sample_t common;
#ifdef HAVE_SSE
asm volatile(
"movlps %2, %%xmm7 \n\t"
"shufps $0x00, %%xmm7, %%xmm7 \n\t"
"movl $-1024, %%esi \n\t"
"1: \n\t"
"movaps 1024(%1, %%esi), %%xmm0 \n\t"
"addps %%xmm7, %%xmm0 \n\t" //common
"movaps (%0, %%esi), %%xmm1 \n\t"
"movaps (%1, %%esi), %%xmm2 \n\t"
"addps %%xmm0, %%xmm1 \n\t"
"addps %%xmm0, %%xmm2 \n\t"
"movaps %%xmm1, (%0, %%esi) \n\t"
"movaps %%xmm2, (%1, %%esi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
:: "r" (left+256), "r" (right+256), "m" (bias)
: "%esi"
);
#else
for (i = 0; i < 256; i++) {
common = right[i + 256] + bias;
left[i] += common;
right[i] += common;
}
#endif
}
static void mix21toS (sample_t * samples, sample_t bias)
@ -466,11 +487,33 @@ static void mix21toS (sample_t * samples, sample_t bias)
int i;
sample_t surround;
#ifdef HAVE_SSE
asm volatile(
"movlps %1, %%xmm7 \n\t"
"shufps $0x00, %%xmm7, %%xmm7 \n\t"
"movl $-1024, %%esi \n\t"
"1: \n\t"
"movaps 2048(%0, %%esi), %%xmm0 \n\t" // surround
"movaps (%0, %%esi), %%xmm1 \n\t"
"movaps 1024(%0, %%esi), %%xmm2 \n\t"
"addps %%xmm7, %%xmm1 \n\t"
"addps %%xmm7, %%xmm2 \n\t"
"subps %%xmm0, %%xmm1 \n\t"
"addps %%xmm0, %%xmm2 \n\t"
"movaps %%xmm1, (%0, %%esi) \n\t"
"movaps %%xmm2, 1024(%0, %%esi) \n\t"
"addl $16, %%esi \n\t"
" jnz 1b \n\t"
:: "r" (samples+256), "m" (bias)
: "%esi"
);
#else
for (i = 0; i < 256; i++) {
surround = samples[i + 512];
samples[i] += bias - surround;
samples[i + 256] += bias + surround;
}
#endif
}
static void mix31to2 (sample_t * samples, sample_t bias)