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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-04 13:29:59 -05:00
svolume: add ARM optimized volume scaling
This commit is contained in:
Wim Taymans
parent
a98fa950d2
commit
951bf1b28d
5 changed files with 281 additions and 2 deletions
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@ -825,8 +825,8 @@ libpulsecore_@PA_MAJORMINORMICRO@_la_SOURCES = \
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pulsecore/resampler.c pulsecore/resampler.h \
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pulsecore/rtpoll.c pulsecore/rtpoll.h \
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pulsecore/sample-util.c pulsecore/sample-util.h \
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pulsecore/cpu-x86.c \
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pulsecore/svolume_c.c \
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pulsecore/cpu-arm.c pulsecore/cpu-x86.c \
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pulsecore/svolume_c.c pulsecore/svolume_arm.c\
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pulsecore/svolume_mmx.c pulsecore/svolume_sse.c \
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pulsecore/sconv-s16be.c pulsecore/sconv-s16be.h \
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pulsecore/sconv-s16le.c pulsecore/sconv-s16le.h \
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@ -93,6 +93,7 @@
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#ifdef HAVE_DBUS
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#include <pulsecore/dbus-shared.h>
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#endif
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#include <pulsecore/cpu-arm.h>
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#include <pulsecore/cpu-x86.h>
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#include "cmdline.h"
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@ -821,6 +822,7 @@ int main(int argc, char *argv[]) {
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pa_memtrap_install();
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pa_cpu_init_x86();
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pa_cpu_init_arm();
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pa_assert_se(mainloop = pa_mainloop_new());
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43
src/pulsecore/cpu-arm.c
Normal file
43
src/pulsecore/cpu-arm.c
Normal file
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@ -0,0 +1,43 @@
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/***
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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>
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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, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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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 <stdint.h>
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#include <pulsecore/log.h>
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#include "cpu-arm.h"
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static pa_cpu_arm_flag_t pa_cpu_arm_flags;
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void pa_cpu_init_arm (void) {
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#if defined (__arm__)
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pa_cpu_arm_flags = 0;
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pa_log ("ARM init\n");
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pa_volume_func_init_arm (pa_cpu_arm_flags);
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#endif /* defined (__arm__) */
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}
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39
src/pulsecore/cpu-arm.h
Normal file
39
src/pulsecore/cpu-arm.h
Normal file
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@ -0,0 +1,39 @@
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#ifndef foocpuarmhfoo
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#define foocpuarmhfoo
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/***
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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>
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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, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <stdint.h>
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typedef enum pa_cpu_arm_flag {
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PA_CPU_ARM_V6 = (1 << 0),
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PA_CPU_ARM_NEON = (1 << 1),
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PA_CPU_ARM_VFP = (1 << 2)
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} pa_cpu_arm_flag_t;
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void pa_cpu_init_arm (void);
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/* some optimized functions */
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void pa_volume_func_init_arm(pa_cpu_arm_flag_t flags);
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#endif /* foocpuarmhfoo */
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195
src/pulsecore/svolume_arm.c
Normal file
195
src/pulsecore/svolume_arm.c
Normal file
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@ -0,0 +1,195 @@
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/***
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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>
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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, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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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/timeval.h>
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#include <pulsecore/random.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/g711.h>
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#include <pulsecore/core-util.h>
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#include "cpu-arm.h"
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#include "sample-util.h"
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#include "endianmacros.h"
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#if defined (__arm__)
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#define MOD_INC() \
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" subs r0, r6, %2 \n\t" \
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" addcs r0, %1 \n\t" \
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" movcs r6, r0 \n\t"
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static void
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pa_volume_s16ne_arm (int16_t *samples, int32_t *volumes, unsigned channels, unsigned length)
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{
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int32_t *ve;
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channels = MAX (4, channels);
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ve = volumes + channels;
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__asm__ __volatile__ (
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" mov r6, %1 \n\t"
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" mov %3, %3, LSR #1 \n\t" /* length /= sizeof (int16_t) */
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" tst %3, #1 \n\t" /* check for odd samples */
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" beq 2f \n\t"
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"1: \n\t"
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" ldr r0, [r6], #4 \n\t" /* odd samples volumes */
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" ldrh r2, [%0] \n\t"
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" smulwb r0, r0, r2 \n\t"
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" ssat r0, #16, r0 \n\t"
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" strh r0, [%0], #2 \n\t"
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MOD_INC()
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"2: \n\t"
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" mov %3, %3, LSR #1 \n\t"
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" tst %3, #1 \n\t" /* check for odd samples */
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" beq 4f \n\t"
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"3: \n\t"
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" ldrd r2, [r6], #8 \n\t" /* 2 samples at a time */
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" ldr r0, [%0] \n\t"
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" smulwt r2, r2, r0 \n\t"
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" smulwb r3, r3, r0 \n\t"
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" ssat r2, #16, r2 \n\t"
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" ssat r3, #16, r3 \n\t"
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" pkhbt r0, r3, r2, LSL #16 \n\t"
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" str r0, [%0], #4 \n\t"
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MOD_INC()
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"4: \n\t"
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" movs %3, %3, LSR #1 \n\t"
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" beq 6f \n\t"
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"5: \n\t"
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" ldrd r2, [r6], #8 \n\t" /* 4 samples at a time */
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" ldrd r4, [r6], #8 \n\t"
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" ldrd r0, [%0] \n\t"
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" smulwt r2, r2, r0 \n\t"
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" smulwb r3, r3, r0 \n\t"
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" smulwt r4, r4, r1 \n\t"
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" smulwb r5, r5, r1 \n\t"
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" ssat r2, #16, r2 \n\t"
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" ssat r3, #16, r3 \n\t"
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" ssat r4, #16, r4 \n\t"
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" ssat r5, #16, r5 \n\t"
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" pkhbt r0, r3, r2, LSL #16 \n\t"
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" pkhbt r1, r5, r4, LSL #16 \n\t"
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" strd r0, [%0], #8 \n\t"
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MOD_INC()
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" subs %3, %3, #1 \n\t"
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" bne 5b \n\t"
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"6: \n\t"
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: "+r" (samples), "+r" (volumes), "+r" (ve), "+r" (length)
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:
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: "r6", "r5", "r4", "r3", "r2", "r1", "r0", "cc"
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);
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}
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#undef RUN_TEST
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#ifdef RUN_TEST
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#define CHANNELS 2
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#define SAMPLES 1023
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#define TIMES 1000
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#define PADDING 16
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static void run_test (void) {
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int16_t samples[SAMPLES];
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int16_t samples_ref[SAMPLES];
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int16_t samples_orig[SAMPLES];
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int32_t volumes[CHANNELS + PADDING];
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int i, j, padding;
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pa_do_volume_func_t func;
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struct timeval start, stop;
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func = pa_get_volume_func (PA_SAMPLE_S16NE);
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printf ("checking ARM %zd\n", sizeof (samples));
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pa_random (samples, sizeof (samples));
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memcpy (samples_ref, samples, sizeof (samples));
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memcpy (samples_orig, samples, sizeof (samples));
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for (i = 0; i < CHANNELS; i++)
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volumes[i] = rand() >> 1;
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for (padding = 0; padding < PADDING; padding++, i++)
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volumes[i] = volumes[padding];
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func (samples_ref, volumes, CHANNELS, sizeof (samples));
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pa_volume_s16ne_arm (samples, volumes, CHANNELS, sizeof (samples));
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for (i = 0; i < SAMPLES; i++) {
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if (samples[i] != samples_ref[i]) {
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printf ("%d: %04x != %04x (%04x * %04x)\n", i, samples[i], samples_ref[i],
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samples_orig[i], volumes[i % CHANNELS]);
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}
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}
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pa_gettimeofday(&start);
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for (j = 0; j < TIMES; j++) {
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memcpy (samples, samples_orig, sizeof (samples));
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pa_volume_s16ne_arm (samples, volumes, CHANNELS, sizeof (samples));
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}
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pa_gettimeofday(&stop);
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pa_log_info("ARM: %llu usec.", (long long unsigned int)pa_timeval_diff (&stop, &start));
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pa_gettimeofday(&start);
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for (j = 0; j < TIMES; j++) {
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memcpy (samples_ref, samples_orig, sizeof (samples));
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func (samples_ref, volumes, CHANNELS, sizeof (samples));
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}
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pa_gettimeofday(&stop);
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pa_log_info("ref: %llu usec.", (long long unsigned int)pa_timeval_diff (&stop, &start));
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}
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#endif
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#endif /* defined (__arm__) */
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void pa_volume_func_init_arm (pa_cpu_arm_flag_t flags) {
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#if defined (__arm__)
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pa_log_info("Initialising ARM optimized functions.");
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#ifdef RUN_TEST
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run_test ();
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#endif
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pa_set_volume_func (PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_arm);
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#endif /* defined (__arm__) */
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}
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