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41 lines
876 B
C
41 lines
876 B
C
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/*
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* optimized mixing code for x86-64
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*/
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#define MIX_AREAS1 mix_areas1
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#define MIX_AREAS2 mix_areas2
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#define LOCK_PREFIX ""
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#include "pcm_dmix_x86_64.h"
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#undef MIX_AREAS1
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#undef MIX_AREAS2
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#undef LOCK_PREFIX
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#define MIX_AREAS1 mix_areas1_smp
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#define MIX_AREAS2 mix_areas2_smp
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#define LOCK_PREFIX "lock ; "
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#include "pcm_dmix_x86_64.h"
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#undef MIX_AREAS1
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#undef MIX_AREAS2
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#undef LOCK_PREFIX
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static void mix_select_callbacks(snd_pcm_direct_t *dmix)
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{
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FILE *in;
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char line[255];
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int smp = 0;
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/* try to determine, if we have SMP */
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in = fopen("/proc/cpuinfo", "r");
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if (in) {
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while (!feof(in)) {
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fgets(line, sizeof(line), in);
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if (!strncmp(line, "processor", 9))
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smp++;
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}
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fclose(in);
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}
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// printf("SMP: %i\n", smp);
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dmix->u.dmix.mix_areas1 = smp > 1 ? mix_areas1_smp : mix_areas1;
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dmix->u.dmix.mix_areas2 = smp > 1 ? mix_areas2_smp : mix_areas2;
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}
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