pcm_symbols.c
noinst_HEADERS = pcm_local.h pcm_plugin.h mask.h mask_inline.h \
interval.h interval_inline.h plugin_ops.h ladspa.h \
- pcm_direct.h pcm_dmix_i386.h
+ pcm_direct.h pcm_dmix_i386.h pcm_dmix_x86_64.h
alsadir = $(datadir)/alsa
typedef void (mix_areas1_t)(unsigned int size,
volatile signed short *dst, signed short *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step);
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step);
typedef void (mix_areas2_t)(unsigned int size,
volatile signed int *dst, signed int *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step);
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step);
struct slave_params {
snd_pcm_format_t format;
char line[255];
int smp = 0, mmx = 0;
- /* safe settings for all i386 CPUs */
- dmix->u.dmix.mix_areas1 = mix_areas1_smp;
/* try to determine, if we have a MMX capable CPU */
in = fopen("/proc/cpuinfo", "r");
- if (in == NULL)
- return;
- 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 (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);
}
- 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;
}
#endif
+#ifdef __x86_64__
+#define ADD_AND_SATURATE
+
+#define MIX_AREAS1 mix_areas1
+#define MIX_AREAS2 mix_areas2
+#define LOCK_PREFIX ""
+#include "pcm_dmix_x86_64.h"
+#undef MIX_AREAS1
+#undef MIX_AREAS2
+#undef LOCK_PREFIX
+
+#define MIX_AREAS1 mix_areas1_smp
+#define MIX_AREAS2 mix_areas2_smp
+#define LOCK_PREFIX "lock ; "
+#include "pcm_dmix_x86_64.h"
+#undef MIX_AREAS1
+#undef MIX_AREAS2
+#undef LOCK_PREFIX
+
+static void mix_select_callbacks(snd_pcm_direct_t *dmix)
+{
+ FILE *in;
+ char line[255];
+ int smp = 0;
+
+ /* 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_areas1 = smp > 1 ? mix_areas1_smp : mix_areas1;
+ dmix->u.dmix.mix_areas2 = smp > 1 ? mix_areas2_smp : mix_areas2;
+}
+#endif
+
+
#ifndef ADD_AND_SATURATE
#warning Please, recode mix_areas1() routine to your architecture...
static void mix_areas1(unsigned int size,
volatile signed short *dst, signed short *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step)
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
{
register signed int sample, old_sample;
#warning Please, recode mix_areas2() routine to your architecture...
static void mix_areas2(unsigned int size,
volatile signed int *dst, signed int *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step)
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
{
register signed int sample, old_sample;
*/
static void MIX_AREAS1(unsigned int size,
volatile signed short *dst, signed short *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step)
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
{
/*
* ESI - src
/*
* while (size-- > 0) {
*/
- "\tcmp $0, %0\n"
+ "\tcmpl $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
*/
static void MIX_AREAS1_MMX(unsigned int size,
volatile signed short *dst, signed short *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step)
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
{
/*
* ESI - src
/*
* while (size-- > 0) {
*/
- "\tcmp $0, %0\n"
+ "\tcmpl $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
*/
static void MIX_AREAS2(unsigned int size,
volatile signed int *dst, signed int *src,
- volatile signed int *sum, unsigned int dst_step,
- unsigned int src_step, unsigned int sum_step)
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
{
/*
* ESI - src
/*
* while (size-- > 0) {
*/
- "\tcmp $0, %0\n"
+ "\tcmpl $0, %0\n"
"jz 6f\n"
"\t.p2align 4,,15\n"
--- /dev/null
+/**
+ * \file pcm/pcm_dmix_x86_64.h
+ * \ingroup PCM_Plugins
+ * \brief PCM Direct Stream Mixing (dmix) Plugin Interface - X86-64 assembler code
+ * \author Takashi Iwai <tiwai@suse.de>
+ * \date 2003
+ */
+/*
+ * PCM - Direct Stream Mixing
+ * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz>
+ * Takashi Iwai <tiwai@suse.de>
+ *
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/*
+ * MMX optimized
+ */
+static void MIX_AREAS1(unsigned int size,
+ volatile signed short *dst, signed short *src,
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
+{
+ /*
+ * ESI - src
+ * EDI - dst
+ * EBX - sum
+ * ECX - old sample
+ * EAX - sample / temporary
+ * EDX - temporary
+ */
+ __asm__ __volatile__ (
+ "\n"
+
+ /*
+ * initialization, load ESI, EDI, EBX registers
+ */
+ "\tmovq %1, %%rdi\n"
+ "\tmovq %2, %%rsi\n"
+ "\tmovq %3, %%rbx\n"
+
+ /*
+ * while (size-- > 0) {
+ */
+ "\tcmpl $0, %0\n"
+ "jz 6f\n"
+
+ "\t.p2align 4,,15\n"
+
+ "1:"
+
+ /*
+ * sample = *src;
+ * sum_sample = *sum;
+ * if (cmpxchg(*dst, 0, 1) == 0)
+ * sample -= sum_sample;
+ * xadd(*sum, sample);
+ */
+ "\tmovw $0, %%ax\n"
+ "\tmovw $1, %%cx\n"
+ "\tmovl (%%rbx), %%edx\n"
+ "\t" LOCK_PREFIX "cmpxchgw %%cx, (%%rdi)\n"
+ "\tmovswl (%%rsi), %%ecx\n"
+ "\tjnz 2f\n"
+ "\tsubl %%edx, %%ecx\n"
+ "2:"
+ "\t" LOCK_PREFIX "addl %%ecx, (%%rbx)\n"
+
+ /*
+ * do {
+ * sample = old_sample = *sum;
+ * saturate(v);
+ * *dst = sample;
+ * } while (v != *sum);
+ */
+
+ "3:"
+ "\tmovl (%%rbx), %%ecx\n"
+ "\tmovd %%ecx, %%mm0\n"
+ "\tpackssdw %%mm1, %%mm0\n"
+ "\tmovd %%mm0, %%eax\n"
+ "\tmovw %%ax, (%%rdi)\n"
+ "\tcmpl %%ecx, (%%rbx)\n"
+ "\tjnz 3b\n"
+
+ /*
+ * while (size-- > 0)
+ */
+ "\tadd %4, %%rdi\n"
+ "\tadd %5, %%rsi\n"
+ "\tadd %6, %%rbx\n"
+ "\tdecl %0\n"
+ "\tjnz 1b\n"
+ "\tjmp 6f\n"
+
+ "6:"
+
+ "\temms\n"
+
+ : /* no output regs */
+ : "m" (size), "m" (dst), "m" (src), "m" (sum), "m" (dst_step), "m" (src_step), "m" (sum_step)
+ : "rsi", "rdi", "edx", "ecx", "rbx", "eax"
+ );
+}
+
+/*
+ * 32-bit version (24-bit resolution)
+ */
+static void MIX_AREAS2(unsigned int size,
+ volatile signed int *dst, signed int *src,
+ volatile signed int *sum, size_t dst_step,
+ size_t src_step, size_t sum_step)
+{
+ /*
+ * ESI - src
+ * EDI - dst
+ * EBX - sum
+ * ECX - old sample
+ * EAX - sample / temporary
+ * EDX - temporary
+ */
+ __asm__ __volatile__ (
+ "\n"
+
+ /*
+ * initialization, load ESI, EDI, EBX registers
+ */
+ "\tmovq %1, %%rdi\n"
+ "\tmovq %2, %%rsi\n"
+ "\tmovq %3, %%rbx\n"
+
+ /*
+ * while (size-- > 0) {
+ */
+ "\tcmpl $0, %0\n"
+ "jz 6f\n"
+
+ "\t.p2align 4,,15\n"
+
+ "1:"
+
+ /*
+ * sample = *src;
+ * sum_sample = *sum;
+ * if (cmpxchg(*dst, 0, 1) == 0)
+ * sample -= sum_sample;
+ * xadd(*sum, sample);
+ */
+ "\tmovl $0, %%eax\n"
+ "\tmovl $1, %%ecx\n"
+ "\tmovl (%%rbx), %%edx\n"
+ "\t" LOCK_PREFIX "cmpxchgl %%ecx, (%%rdi)\n"
+ "\tjnz 2f\n"
+ "\tmovl (%%rsi), %%ecx\n"
+ /* sample >>= 8 */
+ "\tsarl $8, %%ecx\n"
+ "\tsubl %%edx, %%ecx\n"
+ "\tjmp 21f\n"
+ "2:"
+ "\tmovl (%%rsi), %%ecx\n"
+ /* sample >>= 8 */
+ "\tsarl $8, %%ecx\n"
+ "21:"
+ "\t" LOCK_PREFIX "addl %%ecx, (%%rbx)\n"
+
+ /*
+ * do {
+ * sample = old_sample = *sum;
+ * saturate(v);
+ * *dst = sample;
+ * } while (v != *sum);
+ */
+
+ "3:"
+ "\tmovl (%%rbx), %%ecx\n"
+ /*
+ * if (sample > 0x7fff00)
+ */
+ "\tmovl $0x7fffff, %%eax\n"
+ "\tcmpl %%eax, %%ecx\n"
+ "\tjg 4f\n"
+ /*
+ * if (sample < -0x800000)
+ */
+ "\tmovl $-0x800000, %%eax\n"
+ "\tcmpl %%eax, %%ecx\n"
+ "\tjl 4f\n"
+ "\tmovl %%ecx, %%eax\n"
+ "4:"
+ /*
+ * sample <<= 8;
+ */
+ "\tsall $8, %%eax\n"
+ "\tmovl %%eax, (%%rdi)\n"
+ "\tcmpl %%ecx, (%%rbx)\n"
+ "\tjnz 3b\n"
+
+ /*
+ * while (size-- > 0)
+ */
+ "\tadd %4, %%rdi\n"
+ "\tadd %5, %%rsi\n"
+ "\tadd %6, %%rbx\n"
+ "\tdecl %0\n"
+ "\tjnz 1b\n"
+ // "\tjmp 6f\n"
+
+ "6:"
+ : /* no output regs */
+ : "m" (size), "m" (dst), "m" (src), "m" (sum), "m" (dst_step), "m" (src_step), "m" (sum_step)
+ : "rsi", "rdi", "edx", "ecx", "rbx", "eax"
+ );
+}
+
git://git.alsa-project.org / alsa-lib.git / commitdiff