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mix22toS & move2to1 in SSE 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3742 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2001-12-25 17:45:25 +00:00
parent f9c8122cae
commit 5df91323f6
1 changed files with 44 additions and 0 deletions
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44
liba52/downmix.c
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@ -592,11 +592,34 @@ static void mix22toS (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"
"addps 3072(%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 + 768];
samples[i] += bias - surround;
samples[i + 256] += bias + surround;
}
#endif
}
static void mix32to2 (sample_t * samples, sample_t bias)
@ -675,8 +698,29 @@ static void move2to1 (sample_t * src, sample_t * dest, sample_t bias)
{
int i;
#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 (%0, %%esi), %%xmm0 \n\t"
"movaps 16(%0, %%esi), %%xmm1 \n\t"
"addps 1024(%0, %%esi), %%xmm0 \n\t"
"addps 1040(%0, %%esi), %%xmm1 \n\t"
"addps %%xmm7, %%xmm0 \n\t"
"addps %%xmm7, %%xmm1 \n\t"
"movaps %%xmm0, (%1, %%esi) \n\t"
"movaps %%xmm1, 16(%1, %%esi) \n\t"
"addl $32, %%esi \n\t"
" jnz 1b \n\t"
:: "r" (src+256), "r" (dest+256), "m" (bias)
: "%esi"
);
#else
for (i = 0; i < 256; i++)
dest[i] = src[i] + src[i + 256] + bias;
#endif
}
static void zero (sample_t * samples)