code.delx.au - pulseaudio/blob - src/tests/mix-test.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   PulseAudio is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU Lesser General Public License as published
   6   by the Free Software Foundation; either version 2.1 of the License,
   7   or (at your option) any later version.
   8
   9   PulseAudio is distributed in the hope that it will be useful, but
  10   WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12   General Public License for more details.
  13
  14   You should have received a copy of the GNU Lesser General Public License
  15   along with PulseAudio; if not, write to the Free Software
  16   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  17   USA.
  18 ***/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <stdio.h>
  25
  26 #include <pulse/sample.h>
  27 #include <pulse/volume.h>
  28
  29 #include <pulsecore/resampler.h>
  30 #include <pulsecore/macro.h>
  31 #include <pulsecore/endianmacros.h>
  32 #include <pulsecore/memblock.h>
  33 #include <pulsecore/sample-util.h>
  34
  35 #include <liboil/liboil.h>
  36
  37 static float swap_float(float a) {
  38     uint32_t *b = (uint32_t*) &a;
  39     *b = PA_UINT32_SWAP(*b);
  40     return a;
  41 }
  42
  43 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
  44     void *d;
  45     unsigned i;
  46
  47     d = pa_memblock_acquire(chunk->memblock);
  48
  49     switch (ss->format) {
  50
  51         case PA_SAMPLE_U8:
  52         case PA_SAMPLE_ULAW:
  53         case PA_SAMPLE_ALAW: {
  54             uint8_t *u = d;
  55
  56             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  57                 printf("0x%02x ", *(u++));
  58
  59             break;
  60         }
  61
  62         case PA_SAMPLE_S16NE:
  63         case PA_SAMPLE_S16RE: {
  64             uint16_t *u = d;
  65
  66             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  67                 printf("0x%04x ", *(u++));
  68
  69             break;
  70         }
  71
  72         case PA_SAMPLE_S32NE:
  73         case PA_SAMPLE_S32RE: {
  74             uint32_t *u = d;
  75
  76             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  77                 printf("0x%08x ", *(u++));
  78
  79             break;
  80         }
  81
  82         case PA_SAMPLE_FLOAT32NE:
  83         case PA_SAMPLE_FLOAT32RE: {
  84             float *u = d;
  85
  86             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  87                 printf("%1.5f ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
  88                 u++;
  89             }
  90
  91             break;
  92         }
  93
  94         default:
  95             pa_assert_not_reached();
  96     }
  97
  98     printf("\n");
  99
 100     pa_memblock_release(chunk->memblock);
 101 }
 102
 103 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
 104     pa_memblock *r;
 105     void *d;
 106     unsigned i;
 107
 108     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 109     d = pa_memblock_acquire(r);
 110
 111     switch (ss->format) {
 112
 113         case PA_SAMPLE_U8:
 114         case PA_SAMPLE_ULAW:
 115         case PA_SAMPLE_ALAW: {
 116             static const uint8_t u8_samples[] =
 117               { 0x00, 0xFF, 0x7F, 0x80, 0x9f,
 118                 0x3f, 0x01, 0xF0, 0x20, 0x21 };
 119
 120             memcpy(d, &u8_samples[0], sizeof(u8_samples));
 121             break;
 122         }
 123
 124         case PA_SAMPLE_S16NE:
 125         case PA_SAMPLE_S16RE: {
 126             static const uint16_t u16_samples[] =
 127               { 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
 128                 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021 };
 129
 130             memcpy(d, &u16_samples[0], sizeof(u16_samples));
 131             break;
 132         }
 133
 134         case PA_SAMPLE_S32NE:
 135         case PA_SAMPLE_S32RE: {
 136             static const uint32_t u32_samples[] =
 137               { 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
 138                 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A };
 139
 140             memcpy(d, &u32_samples[0], sizeof(u32_samples));
 141             break;
 142         }
 143
 144         case PA_SAMPLE_FLOAT32NE:
 145         case PA_SAMPLE_FLOAT32RE: {
 146             float *u = d;
 147             static const float float_samples[] =
 148               { 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
 149                 0.33f, -.3f, 99.0f, -0.555f, -.123f };
 150
 151             if (ss->format == PA_SAMPLE_FLOAT32RE) {
 152                 for (i = 0; i < 10; i++)
 153                     u[i] = swap_float(float_samples[i]);
 154             } else {
 155               memcpy(d, &float_samples[0], sizeof(float_samples));
 156             }
 157
 158             break;
 159         }
 160
 161         default:
 162             pa_assert_not_reached();
 163     }
 164
 165     pa_memblock_release(r);
 166
 167     return r;
 168 }
 169
 170 int main(int argc, char *argv[]) {
 171     pa_mempool *pool;
 172     pa_sample_spec a;
 173     pa_cvolume v;
 174
 175     oil_init();
 176     pa_log_set_level(PA_LOG_DEBUG);
 177
 178     pa_assert_se(pool = pa_mempool_new(FALSE, 0));
 179
 180     a.channels = 1;
 181     a.rate = 44100;
 182
 183     v.channels = a.channels;
 184     v.values[0] = pa_sw_volume_from_linear(0.9);
 185
 186     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 187         pa_memchunk i, j, k;
 188         pa_mix_info m[2];
 189         void *ptr;
 190
 191         printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
 192
 193         /* Generate block */
 194         i.memblock = generate_block(pool, &a);
 195         i.length = pa_memblock_get_length(i.memblock);
 196         i.index = 0;
 197
 198         dump_block(&a, &i);
 199
 200         /* Make a copy */
 201         j = i;
 202         pa_memblock_ref(j.memblock);
 203         pa_memchunk_make_writable(&j, 0);
 204
 205         /* Adjust volume of the copy */
 206         pa_volume_memchunk(&j, &a, &v);
 207
 208         dump_block(&a, &j);
 209
 210         m[0].chunk = i;
 211         m[0].volume.values[0] = PA_VOLUME_NORM;
 212         m[0].volume.channels = a.channels;
 213         m[1].chunk = j;
 214         m[1].volume.values[0] = PA_VOLUME_NORM;
 215         m[1].volume.channels = a.channels;
 216
 217         k.memblock = pa_memblock_new(pool, i.length);
 218         k.length = i.length;
 219         k.index = 0;
 220
 221         ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
 222         pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
 223         pa_memblock_release(k.memblock);
 224
 225         dump_block(&a, &k);
 226
 227         pa_memblock_unref(i.memblock);
 228         pa_memblock_unref(j.memblock);
 229         pa_memblock_unref(k.memblock);
 230     }
 231
 232     pa_mempool_free(pool);
 233
 234     return 0;
 235 }