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/xmalloc.h>
  30 #include <pulse/rtclock.h>
  31 #include <pulsecore/sample-util.h>
  32 #include <pulsecore/random.h>
  33 #include <pulsecore/svolume-orc-gen.h>
  34
  35 pa_do_volume_func_t fallback;
  36
  37 static void
  38 pa_volume_s16ne_orc(int16_t *samples, int32_t *volumes, unsigned channels, unsigned length)
  39 {
  40     if (channels == 2) {
  41         int64_t v = (int64_t)volumes[1] << 32 | volumes[0];
  42         pa_volume_s16ne_orc_2ch (samples, v, ((length / (sizeof(int16_t))) / 2));
  43     } else if (channels == 1)
  44         pa_volume_s16ne_orc_1ch (samples, volumes[0], length / (sizeof(int16_t)));
  45     else
  46         fallback(samples, volumes, channels, length);
  47 }
  48
  49 #undef RUN_TEST
  50
  51 #ifdef RUN_TEST
  52 #define CHANNELS 2
  53 #define SAMPLES 1022
  54 #define TIMES 1000
  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
  66     func = pa_get_volume_func (PA_SAMPLE_S16NE);
  67
  68     printf ("checking ORC %zd\n", sizeof (samples));
  69
  70     pa_random (samples, sizeof (samples));
  71     memcpy (samples_ref, samples, sizeof (samples));
  72     memcpy (samples_orig, samples, sizeof (samples));
  73
  74     for (i = 0; i < CHANNELS; i++)
  75         volumes[i] = PA_CLAMP_VOLUME(rand() >> 1);
  76     for (padding = 0; padding < PADDING; padding++, i++)
  77         volumes[i] = volumes[padding];
  78
  79     func (samples_ref, volumes, CHANNELS, sizeof (samples));
  80     pa_volume_s16ne_orc (samples, volumes, CHANNELS, sizeof (samples));
  81     for (i = 0; i < SAMPLES; i++) {
  82         if (samples[i] != samples_ref[i]) {
  83             printf ("%d: %04x != %04x (%04x * %04x)\n", i, samples[i], samples_ref[i],
  84                       samples_orig[i], volumes[i % CHANNELS]);
  85         }
  86     }
  87
  88     start = pa_rtclock_now();
  89     for (j = 0; j < TIMES; j++) {
  90         memcpy (samples, samples_orig, sizeof (samples));
  91         pa_volume_s16ne_orc (samples, volumes, CHANNELS, sizeof (samples));
  92     }
  93     stop = pa_rtclock_now();
  94     pa_log_info("ORC: %llu usec.", (long long unsigned int)(stop - start));
  95
  96     start = pa_rtclock_now();
  97     for (j = 0; j < TIMES; j++) {
  98         memcpy (samples_ref, samples_orig, sizeof (samples));
  99         func (samples_ref, volumes, CHANNELS, sizeof (samples));
 100     }
 101     stop = pa_rtclock_now();
 102     pa_log_info("ref: %llu usec.", (long long unsigned int)(stop - start));
 103
 104     pa_assert_se(memcmp(samples_ref, samples, sizeof(samples)) == 0);
 105 }
 106 #endif
 107
 108 void pa_volume_func_init_orc(void) {
 109     pa_log_info("Initialising ORC optimized functions.");
 110
 111 #ifdef RUN_TEST
 112     run_test();
 113 #endif
 114
 115     fallback = pa_get_volume_func(PA_SAMPLE_S16NE);
 116     pa_set_volume_func(PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_orc);
 117 }