convert: add sse/sse2 s16 to float32ne conversions

This commit is contained in:
Wim Taymans 2009-08-26 19:30:37 +02:00
parent 27bfb7628c
commit beb180b7bc
4 changed files with 239 additions and 0 deletions

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@ -842,6 +842,7 @@ libpulsecore_@PA_MAJORMINORMICRO@_la_SOURCES = \
pulsecore/svolume_mmx.c pulsecore/svolume_sse.c \ pulsecore/svolume_mmx.c pulsecore/svolume_sse.c \
pulsecore/sconv-s16be.c pulsecore/sconv-s16be.h \ pulsecore/sconv-s16be.c pulsecore/sconv-s16be.h \
pulsecore/sconv-s16le.c pulsecore/sconv-s16le.h \ pulsecore/sconv-s16le.c pulsecore/sconv-s16le.h \
pulsecore/sconv_sse.c \
pulsecore/sconv.c pulsecore/sconv.h \ pulsecore/sconv.c pulsecore/sconv.h \
pulsecore/shared.c pulsecore/shared.h \ pulsecore/shared.c pulsecore/shared.h \
pulsecore/shm.c pulsecore/shm.h \ pulsecore/shm.c pulsecore/shm.h \

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@ -118,6 +118,7 @@ void pa_cpu_init_x86 (void) {
if (flags & PA_CPU_X86_SSE) { if (flags & PA_CPU_X86_SSE) {
pa_volume_func_init_sse (flags); pa_volume_func_init_sse (flags);
pa_remap_func_init_sse (flags); pa_remap_func_init_sse (flags);
pa_convert_func_init_sse (flags);
} }
#endif /* defined (__i386__) || defined (__amd64__) */ #endif /* defined (__i386__) || defined (__amd64__) */

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@ -66,4 +66,6 @@ void pa_volume_func_init_sse(pa_cpu_x86_flag_t flags);
void pa_remap_func_init_mmx(pa_cpu_x86_flag_t flags); void pa_remap_func_init_mmx(pa_cpu_x86_flag_t flags);
void pa_remap_func_init_sse(pa_cpu_x86_flag_t flags); void pa_remap_func_init_sse(pa_cpu_x86_flag_t flags);
void pa_convert_func_init_sse (pa_cpu_x86_flag_t flags);
#endif /* foocpux86hfoo */ #endif /* foocpux86hfoo */

235
src/pulsecore/sconv_sse.c Normal file
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@ -0,0 +1,235 @@
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio 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.
PulseAudio 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
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <pulsecore/g711.h>
#include <pulsecore/macro.h>
#include "endianmacros.h"
#include "cpu-x86.h"
#include "sconv.h"
static pa_convert_func_t func;
#if defined (__i386__) || defined (__amd64__)
static const PA_DECLARE_ALIGNED (16, float, one[4]) = { 1.0, 1.0, 1.0, 1.0 };
static const PA_DECLARE_ALIGNED (16, float, mone[4]) = { -1.0, -1.0, -1.0, -1.0 };
static const PA_DECLARE_ALIGNED (16, float, scale[4]) = { 0x7fff, 0x7fff, 0x7fff, 0x7fff };
static void pa_sconv_s16le_from_f32ne_sse(unsigned n, const float *a, int16_t *b) {
pa_reg_x86 temp, i;
__asm__ __volatile__ (
" movaps %5, %%xmm5 \n\t"
" movaps %6, %%xmm6 \n\t"
" movaps %7, %%xmm7 \n\t"
" xor %0, %0 \n\t"
" mov %4, %1 \n\t"
" sar $3, %1 \n\t" /* 8 floats at a time */
" cmp $0, %1 \n\t"
" je 2f \n\t"
"1: \n\t"
" movups (%2, %0, 2), %%xmm0 \n\t" /* read 8 floats */
" movups 16(%2, %0, 2), %%xmm2 \n\t"
" minps %%xmm5, %%xmm0 \n\t" /* clamp to 1.0 */
" minps %%xmm5, %%xmm2 \n\t"
" maxps %%xmm6, %%xmm0 \n\t" /* clamp to -1.0 */
" maxps %%xmm6, %%xmm2 \n\t"
" mulps %%xmm7, %%xmm0 \n\t" /* *= 0x7fff */
" mulps %%xmm7, %%xmm2 \n\t"
" cvtps2pi %%xmm0, %%mm0 \n\t" /* low part to int */
" cvtps2pi %%xmm2, %%mm2 \n\t"
" movhlps %%xmm0, %%xmm0 \n\t" /* bring high part in position */
" movhlps %%xmm2, %%xmm2 \n\t"
" cvtps2pi %%xmm0, %%mm1 \n\t" /* high part to int */
" cvtps2pi %%xmm2, %%mm3 \n\t"
" packssdw %%mm1, %%mm0 \n\t" /* pack parts */
" packssdw %%mm3, %%mm2 \n\t"
" movq %%mm0, (%3, %0) \n\t"
" movq %%mm2, 8(%3, %0) \n\t"
" add $16, %0 \n\t"
" dec %1 \n\t"
" jne 1b \n\t"
"2: \n\t"
" mov %4, %1 \n\t" /* prepare for leftovers */
" and $15, %1 \n\t"
" je 4f \n\t"
"3: \n\t"
" movss (%2, %0, 2), %%xmm0 \n\t"
" minss %%xmm5, %%xmm0 \n\t"
" maxss %%xmm6, %%xmm0 \n\t"
" mulss %%xmm7, %%xmm0 \n\t"
" cvtss2si %%xmm0, %4 \n\t"
" movw %w4, (%3, %0) \n\t"
" add $2, %0 \n\t"
" dec %1 \n\t"
" jne 3b \n\t"
"4: \n\t"
" emms \n\t"
: "=&r" (i), "=&r" (temp)
: "r" (a), "r" (b), "r" ((pa_reg_x86)n), "m" (*one), "m" (*mone), "m" (*scale)
: "cc", "memory"
);
}
static void pa_sconv_s16le_from_f32ne_sse2(unsigned n, const float *a, int16_t *b) {
pa_reg_x86 temp, i;
__asm__ __volatile__ (
" movaps %5, %%xmm5 \n\t"
" movaps %6, %%xmm6 \n\t"
" movaps %7, %%xmm7 \n\t"
" xor %0, %0 \n\t"
" mov %4, %1 \n\t"
" sar $3, %1 \n\t" /* 8 floats at a time */
" cmp $0, %1 \n\t"
" je 2f \n\t"
"1: \n\t"
" movups (%2, %0, 2), %%xmm0 \n\t" /* read 8 floats */
" movups 16(%2, %0, 2), %%xmm2 \n\t"
" minps %%xmm5, %%xmm0 \n\t" /* clamp to 1.0 */
" minps %%xmm5, %%xmm2 \n\t"
" maxps %%xmm6, %%xmm0 \n\t" /* clamp to -1.0 */
" maxps %%xmm6, %%xmm2 \n\t"
" mulps %%xmm7, %%xmm0 \n\t" /* *= 0x7fff */
" mulps %%xmm7, %%xmm2 \n\t"
" cvtps2dq %%xmm0, %%xmm0 \n\t"
" cvtps2dq %%xmm2, %%xmm2 \n\t"
" packssdw %%xmm2, %%xmm0 \n\t"
" movdqu %%xmm0, (%3, %0) \n\t"
" add $16, %0 \n\t"
" dec %1 \n\t"
" jne 1b \n\t"
"2: \n\t"
" mov %4, %1 \n\t" /* prepare for leftovers */
" and $15, %1 \n\t"
" je 4f \n\t"
"3: \n\t"
" movss (%2, %0, 2), %%xmm0 \n\t"
" minss %%xmm5, %%xmm0 \n\t"
" maxss %%xmm6, %%xmm0 \n\t"
" mulss %%xmm7, %%xmm0 \n\t"
" cvtss2si %%xmm0, %4 \n\t"
" movw %w4, (%3, %0) \n\t"
" add $2, %0 \n\t"
" dec %1 \n\t"
" jne 3b \n\t"
"4: \n\t"
: "=&r" (i), "=&r" (temp)
: "r" (a), "r" (b), "r" ((pa_reg_x86)n), "m" (*one), "m" (*mone), "m" (*scale)
: "cc", "memory"
);
}
#undef RUN_TEST
#ifdef RUN_TEST
#define SAMPLES 1019
#define TIMES 1000
static void run_test (void) {
int16_t samples[SAMPLES];
int16_t samples_ref[SAMPLES];
float floats[SAMPLES];
int i;
pa_usec_t start, stop;
printf ("checking SSE %zd\n", sizeof (samples));
memset (samples_ref, 0, sizeof (samples_ref));
memset (samples, 0, sizeof (samples));
for (i = 0; i < SAMPLES; i++) {
floats[i] = (rand()/(RAND_MAX+2.2)) - 1.1;
}
func = pa_get_convert_from_float32ne_function (PA_SAMPLE_S16LE);
func (SAMPLES, floats, samples_ref);
pa_sconv_s16le_from_f32ne_sse2 (SAMPLES, floats, samples);
for (i = 0; i < SAMPLES; i++) {
if (samples[i] != samples_ref[i]) {
printf ("%d: %04x != %04x (%f)\n", i, samples[i], samples_ref[i],
floats[i]);
}
}
start = pa_rtclock_now();
for (i = 0; i < TIMES; i++) {
pa_sconv_s16le_from_f32ne_sse2 (SAMPLES, floats, samples);
}
stop = pa_rtclock_now();
pa_log_info("SSE: %llu usec.", (long long unsigned int)(stop - start));
start = pa_rtclock_now();
for (i = 0; i < TIMES; i++) {
func (SAMPLES, floats, samples_ref);
}
stop = pa_rtclock_now();
pa_log_info("ref: %llu usec.", (long long unsigned int)(stop - start));
}
#endif
#endif /* defined (__i386__) || defined (__amd64__) */
void pa_convert_func_init_sse (pa_cpu_x86_flag_t flags) {
#if defined (__i386__) || defined (__amd64__)
pa_log_info("Initialising SSE optimized conversions.");
#ifdef RUN_TEST
run_test ();
#endif
if (flags & PA_CPU_X86_SSE2)
pa_set_convert_from_float32ne_function (PA_SAMPLE_S16LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse2);
else
pa_set_convert_from_float32ne_function (PA_SAMPLE_S16LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse);
#endif /* defined (__i386__) || defined (__amd64__) */
}