mirror of https://github.com/mpv-player/mpv
memset(?, 0, 256*sizeof(float)) in MMX
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3739 b3059339-0415-0410-9bf9-f77b7e298cf2
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@ -593,9 +593,25 @@ static void move2to1 (sample_t * src, sample_t * dest, sample_t bias)
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static void zero (sample_t * samples)
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static void zero (sample_t * samples)
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{
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{
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int i;
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int i;
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#ifdef HAVE_MMX
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asm volatile(
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"movl $-1024, %%esi \n\t"
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"pxor %%mm0, %%mm0 \n\t"
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"1: \n\t"
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"movq %%mm0, (%0, %%esi) \n\t"
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"movq %%mm0, 8(%0, %%esi) \n\t"
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"movq %%mm0, 16(%0, %%esi) \n\t"
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"movq %%mm0, 24(%0, %%esi) \n\t"
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"addl $32, %%esi \n\t"
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" jnz 1b \n\t"
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"emms"
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:: "r" (samples+256)
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: "%esi"
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);
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#else
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for (i = 0; i < 256; i++)
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for (i = 0; i < 256; i++)
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samples[i] = 0;
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samples[i] = 0;
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#endif
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}
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}
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void downmix (sample_t * samples, int acmod, int output, sample_t bias,
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void downmix (sample_t * samples, int acmod, int output, sample_t bias,
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