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0636f4e685
I was looking at a log, and noticed the following lines: I [pulseaudio] svolume_mmx.c: Initialising MMX optimized functions. I [pulseaudio] remap_mmx.c: Initialising MMX optimized remappers. I [pulseaudio] svolume_sse.c: Initialising SSE2 optimized functions. I [pulseaudio] remap_sse.c: Initialising SSE2 optimized remappers. I [pulseaudio] sconv_sse.c: Initialising SSE2 optimized conversions. It seemed odd that some messages were somewhat precise in what functionality was initialized, while the svolume messages told me that they had initialized just "functions". So I made the svolume log messages more precise to match the sconv and remap messages.
218 lines
7.2 KiB
C
218 lines
7.2 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>
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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 <pulsecore/random.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/endianmacros.h>
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#include "cpu-arm.h"
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#include "sample-util.h"
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#if defined (__arm__) && defined (HAVE_ARMV6)
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#define MOD_INC() \
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" subs r0, r6, %2 \n\t" \
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" itt cs \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 pa_volume_s16ne_arm(int16_t *samples, int32_t *volumes, unsigned channels, unsigned length) {
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int32_t *ve;
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/* Channels must be at least 4, and always a multiple of the original number.
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* This is also the max amount we overread the volume array, which should
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* have enough padding. */
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channels = channels == 3 ? 6 : PA_MAX (4U, 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 1022
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#define TIMES 1000
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#define TIMES2 100
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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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pa_usec_t start, stop;
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int k;
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pa_usec_t min = INT_MAX, max = 0;
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double s1 = 0, s2 = 0;
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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] = PA_CLAMP_VOLUME(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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for (k = 0; k < TIMES2; k++) {
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start = pa_rtclock_now();
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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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stop = pa_rtclock_now();
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if (min > (stop - start)) min = stop - start;
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if (max < (stop - start)) max = stop - start;
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s1 += stop - start;
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s2 += (stop - start) * (stop - start);
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}
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pa_log_info("ARM: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
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(long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
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min = INT_MAX; max = 0;
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s1 = s2 = 0;
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for (k = 0; k < TIMES2; k++) {
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start = pa_rtclock_now();
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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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stop = pa_rtclock_now();
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if (min > (stop - start)) min = stop - start;
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if (max < (stop - start)) max = stop - start;
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s1 += stop - start;
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s2 += (stop - start) * (stop - start);
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}
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pa_log_info("ref: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
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(long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
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pa_assert_se(memcmp(samples_ref, samples, sizeof(samples)) == 0);
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}
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#endif
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#endif /* defined (__arm__) && defined (HAVE_ARMV6) */
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void pa_volume_func_init_arm(pa_cpu_arm_flag_t flags) {
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#if defined (__arm__) && defined (HAVE_ARMV6)
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pa_log_info("Initialising ARM optimized volume 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__) && defined (HAVE_ARMV6) */
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}
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