code.delx.au - pulseaudio/blob - src/pulsecore/svolume_orc.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk>
   6   Copyright 2010 Arun Raghavan <arun.raghavan@collabora.co.uk>
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2.1 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include "cpu-orc.h"
  29 #include <pulse/rtclock.h>
  30 #include <pulsecore/sample-util.h>
  31 #include <pulsecore/random.h>
  32 #include <pulsecore/svolume-orc-gen.h>
  33
  34 pa_do_volume_func_t fallback;
  35
  36 static void
  37 pa_volume_s16ne_orc(int16_t *samples, int32_t *volumes, unsigned channels, unsigned length)
  38 {
  39     if (channels == 2) {
  40         int64_t v = (int64_t)volumes[1] << 32 | volumes[0];
  41         pa_volume_s16ne_orc_2ch (samples, v, ((length / (sizeof(int16_t))) / 2));
  42     } else if (channels == 1)
  43         pa_volume_s16ne_orc_1ch (samples, volumes[0], length / (sizeof(int16_t)));
  44     else
  45         fallback(samples, volumes, channels, length);
  46 }
  47
  48 #undef RUN_TEST
  49
  50 #ifdef RUN_TEST
  51 #define CHANNELS 2
  52 #define SAMPLES 1022
  53 #define TIMES 1000
  54 #define TIMES2 100
  55 #define PADDING 16
  56
  57 static void run_test(void) {
  58     int16_t samples[SAMPLES];
  59     int16_t samples_ref[SAMPLES];
  60     int16_t samples_orig[SAMPLES];
  61     int32_t volumes[CHANNELS + PADDING];
  62     int i, j, padding;
  63     pa_do_volume_func_t func;
  64     pa_usec_t start, stop;
  65     int k;
  66     pa_usec_t min = INT_MAX, max = 0;
  67     double s1 = 0, s2 = 0;
  68
  69     func = pa_get_volume_func(PA_SAMPLE_S16NE);
  70
  71     printf("checking ORC %zd\n", sizeof(samples));
  72
  73     pa_random(samples, sizeof(samples));
  74     memcpy(samples_ref, samples, sizeof(samples));
  75     memcpy(samples_orig, samples, sizeof(samples));
  76
  77     for (i = 0; i < CHANNELS; i++)
  78         volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
  79     for (padding = 0; padding < PADDING; padding++, i++)
  80         volumes[i] = volumes[padding];
  81
  82     func(samples_ref, volumes, CHANNELS, sizeof(samples));
  83     pa_volume_s16ne_orc(samples, volumes, CHANNELS, sizeof(samples));
  84     for (i = 0; i < SAMPLES; i++) {
  85         if (samples[i] != samples_ref[i]) {
  86             printf ("%d: %04x != %04x (%04x * %04x)\n", i, samples[i], samples_ref[i],
  87                       samples_orig[i], volumes[i % CHANNELS]);
  88         }
  89     }
  90
  91     for (k = 0; k < TIMES2; k++) {
  92         start = pa_rtclock_now();
  93         for (j = 0; j < TIMES; j++) {
  94             memcpy(samples, samples_orig, sizeof(samples));
  95             pa_volume_s16ne_orc(samples, volumes, CHANNELS, sizeof(samples));
  96         }
  97         stop = pa_rtclock_now();
  98
  99         if (min > (stop - start)) min = stop - start;
 100         if (max < (stop - start)) max = stop - start;
 101         s1 += stop - start;
 102         s2 += (stop - start) * (stop - start);
 103     }
 104     pa_log_info("ORC: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
 105             (long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
 106
 107     min = INT_MAX; max = 0;
 108     s1 = s2 = 0;
 109     for (k = 0; k < TIMES2; k++) {
 110         start = pa_rtclock_now();
 111         for (j = 0; j < TIMES; j++) {
 112             memcpy(samples_ref, samples_orig, sizeof(samples));
 113             func(samples_ref, volumes, CHANNELS, sizeof(samples));
 114         }
 115         stop = pa_rtclock_now();
 116
 117         if (min > (stop - start)) min = stop - start;
 118         if (max < (stop - start)) max = stop - start;
 119         s1 += stop - start;
 120         s2 += (stop - start) * (stop - start);
 121     }
 122     pa_log_info("ref: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
 123             (long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
 124
 125     pa_assert_se(memcmp(samples_ref, samples, sizeof(samples)) == 0);
 126 }
 127 #endif
 128
 129 void pa_volume_func_init_orc(void) {
 130     pa_log_info("Initialising ORC optimized functions.");
 131
 132 #ifdef RUN_TEST
 133     run_test();
 134 #endif
 135
 136     fallback = pa_get_volume_func(PA_SAMPLE_S16NE);
 137     pa_set_volume_func(PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_orc);
 138 }