mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-09 13:29:59 -05:00
5effc83479
FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this. This patch changes all FSF addresses to FSF web page according to the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html Done automatically by sed-ing through sources.
177 lines
6.8 KiB
C
177 lines
6.8 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/endianmacros.h>
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#include "cpu-x86.h"
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#include "sconv.h"
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#if (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__)
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static const PA_DECLARE_ALIGNED (16, float, scale[4]) = { 0x8000, 0x8000, 0x8000, 0x8000 };
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static void pa_sconv_s16le_from_f32ne_sse(unsigned n, const float *a, int16_t *b) {
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pa_reg_x86 temp, i;
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__asm__ __volatile__ (
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" movaps %5, %%xmm5 \n\t"
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" xor %0, %0 \n\t"
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" mov %4, %1 \n\t"
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" sar $3, %1 \n\t" /* 8 floats at a time */
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" cmp $0, %1 \n\t"
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" je 2f \n\t"
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"1: \n\t"
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" movups (%q2, %0, 2), %%xmm0 \n\t" /* read 8 floats */
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" movups 16(%q2, %0, 2), %%xmm2 \n\t"
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" mulps %%xmm5, %%xmm0 \n\t" /* *= 0x8000 */
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" mulps %%xmm5, %%xmm2 \n\t"
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" cvtps2pi %%xmm0, %%mm0 \n\t" /* low part to int */
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" cvtps2pi %%xmm2, %%mm2 \n\t"
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" movhlps %%xmm0, %%xmm0 \n\t" /* bring high part in position */
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" movhlps %%xmm2, %%xmm2 \n\t"
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" cvtps2pi %%xmm0, %%mm1 \n\t" /* high part to int */
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" cvtps2pi %%xmm2, %%mm3 \n\t"
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" packssdw %%mm1, %%mm0 \n\t" /* pack parts */
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" packssdw %%mm3, %%mm2 \n\t"
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" movq %%mm0, (%q3, %0) \n\t"
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" movq %%mm2, 8(%q3, %0) \n\t"
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" add $16, %0 \n\t"
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" dec %1 \n\t"
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" jne 1b \n\t"
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"2: \n\t"
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" mov %4, %1 \n\t" /* prepare for leftovers */
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" and $7, %1 \n\t"
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" je 5f \n\t"
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"3: \n\t"
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" movss (%q2, %0, 2), %%xmm0 \n\t"
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" mulss %%xmm5, %%xmm0 \n\t"
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" cvtss2si %%xmm0, %4 \n\t"
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" add $0x8000, %4 \n\t" /* check for saturation */
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" and $~0xffff, %4 \n\t"
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" cvtss2si %%xmm0, %4 \n\t"
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" je 4f \n\t"
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" sar $31, %4 \n\t"
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" xor $0x7fff, %4 \n\t"
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"4: \n\t"
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" movw %w4, (%q3, %0) \n\t" /* store leftover */
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" add $2, %0 \n\t"
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" dec %1 \n\t"
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" jne 3b \n\t"
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"5: \n\t"
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" emms \n\t"
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: "=&r" (i), "=&r" (temp)
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: "r" (a), "r" (b), "r" ((pa_reg_x86)n), "m" (*scale)
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: "cc", "memory"
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);
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}
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static void pa_sconv_s16le_from_f32ne_sse2(unsigned n, const float *a, int16_t *b) {
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pa_reg_x86 temp, i;
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__asm__ __volatile__ (
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" movaps %5, %%xmm5 \n\t"
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" xor %0, %0 \n\t"
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" mov %4, %1 \n\t"
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" sar $3, %1 \n\t" /* 8 floats at a time */
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" cmp $0, %1 \n\t"
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" je 2f \n\t"
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"1: \n\t"
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" movups (%q2, %0, 2), %%xmm0 \n\t" /* read 8 floats */
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" movups 16(%q2, %0, 2), %%xmm2 \n\t"
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" mulps %%xmm5, %%xmm0 \n\t" /* *= 0x8000 */
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" mulps %%xmm5, %%xmm2 \n\t"
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" cvtps2dq %%xmm0, %%xmm0 \n\t"
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" cvtps2dq %%xmm2, %%xmm2 \n\t"
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" packssdw %%xmm2, %%xmm0 \n\t"
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" movdqu %%xmm0, (%q3, %0) \n\t"
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" add $16, %0 \n\t"
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" dec %1 \n\t"
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" jne 1b \n\t"
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"2: \n\t"
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" mov %4, %1 \n\t" /* prepare for leftovers */
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" and $7, %1 \n\t"
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" je 5f \n\t"
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"3: \n\t"
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" movss (%q2, %0, 2), %%xmm0 \n\t"
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" mulss %%xmm5, %%xmm0 \n\t"
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" cvtss2si %%xmm0, %4 \n\t"
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" add $0x8000, %4 \n\t"
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" and $~0xffff, %4 \n\t" /* check for saturation */
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" cvtss2si %%xmm0, %4 \n\t"
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" je 4f \n\t"
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" sar $31, %4 \n\t"
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" xor $0x7fff, %4 \n\t"
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"4: \n\t"
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" movw %w4, (%q3, %0) \n\t" /* store leftover */
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" add $2, %0 \n\t"
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" dec %1 \n\t"
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" jne 3b \n\t"
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"5: \n\t"
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: "=&r" (i), "=&r" (temp)
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: "r" (a), "r" (b), "r" ((pa_reg_x86)n), "m" (*scale)
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: "cc", "memory"
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);
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}
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#endif /* defined (__i386__) || defined (__amd64__) */
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void pa_convert_func_init_sse(pa_cpu_x86_flag_t flags) {
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#if (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__)
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if (flags & PA_CPU_X86_SSE2) {
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pa_log_info("Initialising SSE2 optimized conversions.");
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pa_set_convert_from_float32ne_function(PA_SAMPLE_S16LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse2);
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pa_set_convert_to_s16ne_function(PA_SAMPLE_FLOAT32LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse2);
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} else if (flags & PA_CPU_X86_SSE) {
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pa_log_info("Initialising SSE optimized conversions.");
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pa_set_convert_from_float32ne_function(PA_SAMPLE_S16LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse);
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pa_set_convert_to_s16ne_function(PA_SAMPLE_FLOAT32LE, (pa_convert_func_t) pa_sconv_s16le_from_f32ne_sse);
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}
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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