diff options
Diffstat (limited to 'liba52')
| -rw-r--r-- | liba52/downmix.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/liba52/downmix.c b/liba52/downmix.c index 5bd51b4e36..07cb396d9a 100644 --- a/liba52/downmix.c +++ b/liba52/downmix.c @@ -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) |