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Split arch-dependent codes of dmix

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Split arch-dependent codes of dmix to separate files.
This commit is contained in:
Takashi Iwai 2005-02-08 20:28:29 +00:00
parent c92969845d
commit 22846c486f
5 changed files with 220 additions and 166 deletions
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52
src/pcm/pcm_dmix_i386.c Normal file
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/*
* optimized mixing code for i386
*/
#define MIX_AREAS1 mix_areas1
#define MIX_AREAS1_MMX mix_areas1_mmx
#define MIX_AREAS2 mix_areas2
#define LOCK_PREFIX ""
#include "pcm_dmix_i386.h"
#undef MIX_AREAS1
#undef MIX_AREAS1_MMX
#undef MIX_AREAS2
#undef LOCK_PREFIX
#define MIX_AREAS1 mix_areas1_smp
#define MIX_AREAS1_MMX mix_areas1_smp_mmx
#define MIX_AREAS2 mix_areas2_smp
#define LOCK_PREFIX "lock ; "
#include "pcm_dmix_i386.h"
#undef MIX_AREAS1
#undef MIX_AREAS1_MMX
#undef MIX_AREAS2
#undef LOCK_PREFIX
static void mix_select_callbacks(snd_pcm_direct_t *dmix)
{
FILE *in;
char line[255];
int smp = 0, mmx = 0;
/* try to determine, if we have a MMX capable CPU */
in = fopen("/proc/cpuinfo", "r");
if (in) {
while (!feof(in)) {
fgets(line, sizeof(line), in);
if (!strncmp(line, "processor", 9))
smp++;
else if (!strncmp(line, "flags", 5)) {
if (strstr(line, " mmx"))
mmx = 1;
}
}
fclose(in);
}
// printf("MMX: %i, SMP: %i\n", mmx, smp);
if (mmx) {
dmix->u.dmix.mix_areas1 = smp > 1 ? mix_areas1_smp_mmx : mix_areas1_mmx;
} else {
dmix->u.dmix.mix_areas1 = smp > 1 ? mix_areas1_smp : mix_areas1;
}
dmix->u.dmix.mix_areas2 = smp > 1 ? mix_areas2_smp : mix_areas2;
}