mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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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FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this.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.
153 lines
6.2 KiB
C
153 lines
6.2 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 2009 Wim Taymans <wim.taymans@collabora.co.uk.com>
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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 <pulse/sample.h>
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#include <pulse/volume.h>
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#include <pulsecore/log.h>
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#include <pulsecore/macro.h>
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#include "cpu-x86.h"
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#include "remap.h"
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#define LOAD_SAMPLES \
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" movq (%1), %%mm0 \n\t" \
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" movq 8(%1), %%mm2 \n\t" \
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" movq 16(%1), %%mm4 \n\t" \
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" movq 24(%1), %%mm6 \n\t" \
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" movq %%mm0, %%mm1 \n\t" \
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" movq %%mm2, %%mm3 \n\t" \
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" movq %%mm4, %%mm5 \n\t" \
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" movq %%mm6, %%mm7 \n\t"
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#define UNPACK_SAMPLES(s) \
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" punpckl"#s" %%mm0, %%mm0 \n\t" \
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" punpckh"#s" %%mm1, %%mm1 \n\t" \
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" punpckl"#s" %%mm2, %%mm2 \n\t" \
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" punpckh"#s" %%mm3, %%mm3 \n\t" \
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" punpckl"#s" %%mm4, %%mm4 \n\t" \
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" punpckh"#s" %%mm5, %%mm5 \n\t" \
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" punpckl"#s" %%mm6, %%mm6 \n\t" \
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" punpckh"#s" %%mm7, %%mm7 \n\t"
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#define STORE_SAMPLES \
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" movq %%mm0, (%0) \n\t" \
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" movq %%mm1, 8(%0) \n\t" \
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" movq %%mm2, 16(%0) \n\t" \
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" movq %%mm3, 24(%0) \n\t" \
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" movq %%mm4, 32(%0) \n\t" \
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" movq %%mm5, 40(%0) \n\t" \
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" movq %%mm6, 48(%0) \n\t" \
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" movq %%mm7, 56(%0) \n\t" \
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" add $32, %1 \n\t" \
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" add $64, %0 \n\t"
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#define HANDLE_SINGLE_dq() \
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" movd (%1), %%mm0 \n\t" \
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" punpckldq %%mm0, %%mm0 \n\t" \
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" movq %%mm0, (%0) \n\t" \
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" add $4, %1 \n\t" \
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" add $8, %0 \n\t"
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#define HANDLE_SINGLE_wd() \
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" movw (%1), %w3 \n\t" \
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" movd %3, %%mm0 \n\t" \
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" punpcklwd %%mm0, %%mm0 \n\t" \
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" movd %%mm0, (%0) \n\t" \
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" add $2, %1 \n\t" \
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" add $4, %0 \n\t"
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#define MONO_TO_STEREO(s,shift,mask) \
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" mov %4, %2 \n\t" \
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" sar $"#shift", %2 \n\t" \
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" cmp $0, %2 \n\t" \
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" je 2f \n\t" \
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"1: \n\t" \
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LOAD_SAMPLES \
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UNPACK_SAMPLES(s) \
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STORE_SAMPLES \
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" dec %2 \n\t" \
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" jne 1b \n\t" \
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"2: \n\t" \
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" mov %4, %2 \n\t" \
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" and $"#mask", %2 \n\t" \
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" je 4f \n\t" \
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"3: \n\t" \
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HANDLE_SINGLE_##s() \
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" dec %2 \n\t" \
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" jne 3b \n\t" \
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"4: \n\t" \
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" emms \n\t"
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#if defined (__i386__) || defined (__amd64__)
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static void remap_mono_to_stereo_s16ne_mmx(pa_remap_t *m, int16_t *dst, const int16_t *src, unsigned n) {
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pa_reg_x86 temp, temp2;
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__asm__ __volatile__ (
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MONO_TO_STEREO(wd,4,15) /* do words to doubles */
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: "+r" (dst), "+r" (src), "=&r" (temp), "=&r" (temp2)
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: "r" ((pa_reg_x86)n)
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: "cc"
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);
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}
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static void remap_mono_to_stereo_float32ne_mmx(pa_remap_t *m, float *dst, const float *src, unsigned n) {
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pa_reg_x86 temp, temp2;
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__asm__ __volatile__ (
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MONO_TO_STEREO(dq,3,7) /* do doubles to quads */
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: "+r" (dst), "+r" (src), "=&r" (temp), "=&r" (temp2)
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: "r" ((pa_reg_x86)n)
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: "cc"
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);
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}
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/* set the function that will execute the remapping based on the matrices */
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static void init_remap_mmx(pa_remap_t *m) {
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unsigned n_oc, n_ic;
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n_oc = m->o_ss.channels;
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n_ic = m->i_ss.channels;
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/* find some common channel remappings, fall back to full matrix operation. */
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if (n_ic == 1 && n_oc == 2 &&
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m->map_table_i[0][0] == 0x10000 && m->map_table_i[1][0] == 0x10000) {
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pa_log_info("Using MMX mono to stereo remapping");
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pa_set_remap_func(m, (pa_do_remap_func_t) remap_mono_to_stereo_s16ne_mmx,
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(pa_do_remap_func_t) remap_mono_to_stereo_float32ne_mmx);
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}
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}
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#endif /* defined (__i386__) || defined (__amd64__) */
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void pa_remap_func_init_mmx(pa_cpu_x86_flag_t flags) {
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#if defined (__i386__) || defined (__amd64__)
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if (flags & PA_CPU_X86_MMX) {
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pa_log_info("Initialising MMX optimized remappers.");
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pa_set_init_remap_func((pa_init_remap_func_t) init_remap_mmx);
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}
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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