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mix5to1 & mix4to1 in SSE

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3678 b3059339-0415-0410-9bf9-f77b7e298cf2
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michael 2001-12-23 17:16:07 +00:00
parent 1ce2b45322
commit c2aab97909
1 changed files with 41 additions and 0 deletions
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41
liba52/downmix.c
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@ -342,18 +342,59 @@ static void mix4to1 (sample_t * samples, sample_t bias)
{
int i;
#ifdef HAVE_SSE // FIXME untested
asm volatile(
"movlps %1, %%xmm7 \n\t"
"shufps $0x00, %%xmm7, %%xmm7 \n\t"
"movl $-1024, %%esi \n\t"
"1: \n\t"
"movaps (%0, %%esi), %%xmm0 \n\t"
"movaps 1024(%0, %%esi), %%xmm1 \n\t"
"addps 2048(%0, %%esi), %%xmm0 \n\t"
"addps 3072(%0, %%esi), %%xmm1 \n\t"
"addps %%xmm7, %%xmm0 \n\t"
"addps %%xmm1, %%xmm0 \n\t"
"movaps %%xmm0, (%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++)
samples[i] += (samples[i + 256] + samples[i + 512] +
samples[i + 768] + bias);
#endif
}
static void mix5to1 (sample_t * samples, sample_t bias)
{
int i;
#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 (%0, %%esi), %%xmm0 \n\t"
"movaps 1024(%0, %%esi), %%xmm1 \n\t"
"addps 2048(%0, %%esi), %%xmm0 \n\t"
"addps 3072(%0, %%esi), %%xmm1 \n\t"
"addps %%xmm7, %%xmm0 \n\t"
"addps 4096(%0, %%esi), %%xmm1 \n\t"
"addps %%xmm1, %%xmm0 \n\t"
"movaps %%xmm0, (%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++)
samples[i] += (samples[i + 256] + samples[i + 512] +
samples[i + 768] + samples[i + 1024] + bias);
#endif
}
static void mix3to2 (sample_t * samples, sample_t bias)