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034b77823a
So far PulseAudio only supported two different work formats: S16NE if it's sufficient to represent the input and output formats without loss of precision and FLOAT32NE in all other cases. For systems that use S32NE exclusively, this results in unnecessary conversions from S32NE to FLOAT32NE and back again. Add S32NE remap operations and make use of them (for the COPY and TRIVIAL resamplers) if both input and output format are S32NE. This avoids the back and forth conversions between S32NE and FLOAT32NE, significantly improving performance for those cases.
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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" movdqu (%1), %%xmm0 \n\t" \
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" movdqu 16(%1), %%xmm2 \n\t" \
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" movdqu 32(%1), %%xmm4 \n\t" \
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" movdqu 48(%1), %%xmm6 \n\t" \
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" movdqa %%xmm0, %%xmm1 \n\t" \
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" movdqa %%xmm2, %%xmm3 \n\t" \
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" movdqa %%xmm4, %%xmm5 \n\t" \
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" movdqa %%xmm6, %%xmm7 \n\t"
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#define UNPACK_SAMPLES(s) \
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" punpckl"#s" %%xmm0, %%xmm0 \n\t" \
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" punpckh"#s" %%xmm1, %%xmm1 \n\t" \
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" punpckl"#s" %%xmm2, %%xmm2 \n\t" \
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" punpckh"#s" %%xmm3, %%xmm3 \n\t" \
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" punpckl"#s" %%xmm4, %%xmm4 \n\t" \
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" punpckh"#s" %%xmm5, %%xmm5 \n\t" \
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" punpckl"#s" %%xmm6, %%xmm6 \n\t" \
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" punpckh"#s" %%xmm7, %%xmm7 \n\t"
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#define STORE_SAMPLES \
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" movdqu %%xmm0, (%0) \n\t" \
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" movdqu %%xmm1, 16(%0) \n\t" \
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" movdqu %%xmm2, 32(%0) \n\t" \
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" movdqu %%xmm3, 48(%0) \n\t" \
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" movdqu %%xmm4, 64(%0) \n\t" \
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" movdqu %%xmm5, 80(%0) \n\t" \
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" movdqu %%xmm6, 96(%0) \n\t" \
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" movdqu %%xmm7, 112(%0) \n\t" \
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" add $64, %1 \n\t" \
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" add $128, %0 \n\t"
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#define HANDLE_SINGLE_dq() \
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" movd (%1), %%xmm0 \n\t" \
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" punpckldq %%xmm0, %%xmm0 \n\t" \
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" movq %%xmm0, (%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, %%xmm0 \n\t" \
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" punpcklwd %%xmm0, %%xmm0 \n\t" \
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" movd %%xmm0, (%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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#if defined (__i386__) || defined (__amd64__)
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static void remap_mono_to_stereo_s16ne_sse2(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, 5, 31) /* 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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/* Works for both S32NE and FLOAT32NE */
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static void remap_mono_to_stereo_any32ne_sse2(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, 4, 15) /* 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_sse2(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 SSE2 mono to stereo remapping");
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pa_set_remap_func(m, (pa_do_remap_func_t) remap_mono_to_stereo_s16ne_sse2,
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(pa_do_remap_func_t) remap_mono_to_stereo_any32ne_sse2,
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(pa_do_remap_func_t) remap_mono_to_stereo_any32ne_sse2);
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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_sse(pa_cpu_x86_flag_t flags) {
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#if defined (__i386__) || defined (__amd64__)
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if (flags & PA_CPU_X86_SSE2) {
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pa_log_info("Initialising SSE2 optimized remappers.");
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pa_set_init_remap_func ((pa_init_remap_func_t) init_remap_sse2);
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}
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#endif /* defined (__i386__) || defined (__amd64__) */
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}
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