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/*
* optimized mixing code for i386
*/
#define MIX_AREAS_16 mix_areas_16
#define MIX_AREAS_16_MMX mix_areas_16_mmx
#define MIX_AREAS_32 mix_areas_32
#define MIX_AREAS_24 mix_areas_24
#define MIX_AREAS_24_CMOV mix_areas_24_cmov
#define LOCK_PREFIX ""
#define XADD "addl"
#define XSUB "subl"
#include "pcm_dmix_i386.h"
#undef MIX_AREAS_16
#undef MIX_AREAS_16_MMX
#undef MIX_AREAS_32
#undef MIX_AREAS_24
#undef MIX_AREAS_24_CMOV
#undef LOCK_PREFIX
#undef XADD
#undef XSUB
#define MIX_AREAS_16 remix_areas_16
#define MIX_AREAS_16_MMX remix_areas_16_mmx
#define MIX_AREAS_32 remix_areas_32
#define MIX_AREAS_24 remix_areas_24
#define MIX_AREAS_24_CMOV remix_areas_24_cmov
#define LOCK_PREFIX ""
#define XADD "subl"
#define XSUB "addl"
#include "pcm_dmix_i386.h"
#undef MIX_AREAS_16
#undef MIX_AREAS_16_MMX
#undef MIX_AREAS_32
#undef MIX_AREAS_24
#undef MIX_AREAS_24_CMOV
#undef LOCK_PREFIX
#undef XADD
#undef XSUB
#define MIX_AREAS_16 mix_areas_16_smp
#define MIX_AREAS_16_MMX mix_areas_16_smp_mmx
#define MIX_AREAS_32 mix_areas_32_smp
#define MIX_AREAS_24 mix_areas_24_smp
#define MIX_AREAS_24_CMOV mix_areas_24_smp_cmov
#define LOCK_PREFIX "lock ; "
#define XADD "addl"
#define XSUB "subl"
#include "pcm_dmix_i386.h"
#undef MIX_AREAS_16
#undef MIX_AREAS_16_MMX
#undef MIX_AREAS_32
#undef MIX_AREAS_24
#undef MIX_AREAS_24_CMOV
#undef LOCK_PREFIX
#undef XADD
#undef XSUB
#define MIX_AREAS_16 remix_areas_16_smp
#define MIX_AREAS_16_MMX remix_areas_16_smp_mmx
#define MIX_AREAS_32 remix_areas_32_smp
#define MIX_AREAS_24 remix_areas_24_smp
#define MIX_AREAS_24_CMOV remix_areas_24_smp_cmov
#define LOCK_PREFIX "lock ; "
#define XADD "subl"
#define XSUB "addl"
#include "pcm_dmix_i386.h"
#undef MIX_AREAS_16
#undef MIX_AREAS_16_MMX
#undef MIX_AREAS_32
#undef MIX_AREAS_24
#undef MIX_AREAS_24_CMOV
#undef LOCK_PREFIX
#undef XADD
#undef XSUB
#define i386_dmix_supported_format \
((1ULL << SND_PCM_FORMAT_S16_LE) |\
(1ULL << SND_PCM_FORMAT_S32_LE) |\
(1ULL << SND_PCM_FORMAT_S24_LE) |\
(1ULL << SND_PCM_FORMAT_S24_3LE))
#define dmix_supported_format \
(i386_dmix_supported_format | generic_dmix_supported_format)
static void mix_select_callbacks(snd_pcm_direct_t *dmix)
{
static int smp = 0, mmx = 0, cmov = 0;
if (!dmix->direct_memory_access) {
generic_mix_select_callbacks(dmix);
return;
}
if (!((1ULL<< dmix->shmptr->s.format) & i386_dmix_supported_format)) {
generic_mix_select_callbacks(dmix);
return;
}
if (!smp) {
FILE *in;
char line[255];
/* try to determine the capabilities of the 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;
if (strstr(line, " cmov"))
cmov = 1;
}
}
fclose(in);
}
}
if (mmx) {
dmix->u.dmix.mix_areas_16 = smp > 1 ? mix_areas_16_smp_mmx : mix_areas_16_mmx;
dmix->u.dmix.remix_areas_16 = smp > 1 ? remix_areas_16_smp_mmx : remix_areas_16_mmx;
} else {
dmix->u.dmix.mix_areas_16 = smp > 1 ? mix_areas_16_smp : mix_areas_16;
dmix->u.dmix.remix_areas_16 = smp > 1 ? remix_areas_16_smp : remix_areas_16;
}
dmix->u.dmix.mix_areas_32 = smp > 1 ? mix_areas_32_smp : mix_areas_32;
dmix->u.dmix.remix_areas_32 = smp > 1 ? remix_areas_32_smp : remix_areas_32;
if (cmov) {
dmix->u.dmix.mix_areas_24 = smp > 1 ? mix_areas_24_smp_cmov : mix_areas_24_cmov;
dmix->u.dmix.remix_areas_24 = smp > 1 ? remix_areas_24_smp_cmov : remix_areas_24_cmov;
} else {
dmix->u.dmix.mix_areas_24 = smp > 1 ? mix_areas_24_smp: mix_areas_24;
dmix->u.dmix.remix_areas_24 = smp > 1 ? remix_areas_24_smp: remix_areas_24;
}
dmix->u.dmix.use_sem = 0;
}
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