/*

 * optimized mixing code for x86-64

 */

#define MIX_AREAS_16 mix_areas_16

#define MIX_AREAS_32 mix_areas_32

#define MIX_AREAS_24 mix_areas_24

#define LOCK_PREFIX ""

#define XADD "addl"

#define XSUB "subl"

#include "pcm_dmix_x86_64.h"

#undef MIX_AREAS_16

#undef MIX_AREAS_32

#undef MIX_AREAS_24

#undef LOCK_PREFIX

#undef XADD

#undef XSUB

#define MIX_AREAS_16 remix_areas_16

#define MIX_AREAS_32 remix_areas_32

#define MIX_AREAS_24 remix_areas_24

#define LOCK_PREFIX ""

#define XADD "subl"

#define XSUB "addl"

#include "pcm_dmix_x86_64.h"

#undef MIX_AREAS_16

#undef MIX_AREAS_32

#undef MIX_AREAS_24

#undef LOCK_PREFIX

#undef XADD

#undef XSUB

#define MIX_AREAS_16 mix_areas_16_smp

#define MIX_AREAS_32 mix_areas_32_smp

#define MIX_AREAS_24 mix_areas_24_smp

#define LOCK_PREFIX "lock ; "

#define XADD "addl"

#define XSUB "subl"

#include "pcm_dmix_x86_64.h"

#undef MIX_AREAS_16

#undef MIX_AREAS_32

#undef MIX_AREAS_24

#undef LOCK_PREFIX

#undef XADD

#undef XSUB

#define MIX_AREAS_16 remix_areas_16_smp

#define MIX_AREAS_32 remix_areas_32_smp

#define MIX_AREAS_24 remix_areas_24_smp

#define LOCK_PREFIX "lock ; "

#define XADD "subl"

#define XSUB "addl"

#include "pcm_dmix_x86_64.h"

#undef MIX_AREAS_16

#undef MIX_AREAS_32

#undef MIX_AREAS_24

#undef LOCK_PREFIX

#undef XADD

#undef XSUB

#define x86_64_dmix_supported_format \

	((1ULL << SND_PCM_FORMAT_S16_LE) |\

	 (1ULL << SND_PCM_FORMAT_S32_LE) |\

	 (1ULL << SND_PCM_FORMAT_S24_3LE))

#define dmix_supported_format \

	(x86_64_dmix_supported_format | generic_dmix_supported_format)

static void mix_select_callbacks(snd_pcm_direct_t *dmix)

{

	static int smp = 0;

	if (!dmix->direct_memory_access) {

		generic_mix_select_callbacks(dmix);

		return;

	}

	if (!((1ULL<< dmix->shmptr->s.format) & x86_64_dmix_supported_format)) {

		generic_mix_select_callbacks(dmix);

		return;

	}

	if (!smp) {

		FILE *in;

		char line[255];

		/* try to determine, if we have SMP */

		in = fopen("/proc/cpuinfo", "r");

		if (in) {

			while (!feof(in)) {

				fgets(line, sizeof(line), in);

				if (!strncmp(line, "processor", 9))

					smp++;

			}

			fclose(in);

		}

	}

	// printf("SMP: %i\n", smp);

	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;

	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;

}