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_S24NE:
  83         case PA_SAMPLE_S24RE: {
  84             uint8_t *u = d;
  85
  86             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  87                 printf("0x%02x%02x%02xx ", *(u++), *(u++), *(u++));
  88
  89             break;
  90         }
  91
  92         case PA_SAMPLE_FLOAT32NE:
  93         case PA_SAMPLE_FLOAT32RE: {
  94             float *u = d;
  95
  96             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  97                 printf("%1.5f ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
  98                 u++;
  99             }
 100
 101             break;
 102         }
 103
 104         default:
 105             pa_assert_not_reached();
 106     }
 107
 108     printf("\n");
 109
 110     pa_memblock_release(chunk->memblock);
 111 }
 112
 113 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
 114     pa_memblock *r;
 115     void *d;
 116     unsigned i;
 117
 118     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 119     d = pa_memblock_acquire(r);
 120
 121     switch (ss->format) {
 122
 123         case PA_SAMPLE_U8:
 124         case PA_SAMPLE_ULAW:
 125         case PA_SAMPLE_ALAW: {
 126             static const uint8_t u8_samples[] =
 127               { 0x00, 0xFF, 0x7F, 0x80, 0x9f,
 128                 0x3f, 0x01, 0xF0, 0x20, 0x21 };
 129
 130             memcpy(d, &u8_samples[0], sizeof(u8_samples));
 131             break;
 132         }
 133
 134         case PA_SAMPLE_S16NE:
 135         case PA_SAMPLE_S16RE: {
 136             static const uint16_t u16_samples[] =
 137               { 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
 138                 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021 };
 139
 140             memcpy(d, &u16_samples[0], sizeof(u16_samples));
 141             break;
 142         }
 143
 144         case PA_SAMPLE_S32NE:
 145         case PA_SAMPLE_S32RE: {
 146             static const uint32_t u32_samples[] =
 147               { 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
 148                 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A };
 149
 150             memcpy(d, &u32_samples[0], sizeof(u32_samples));
 151             break;
 152         }
 153
 154         case PA_SAMPLE_S24NE:
 155         case PA_SAMPLE_S24RE: {
 156             /* Need to be on a byte array because they are not aligned */
 157             static const uint8_t u24_samples[] =
 158               { 0x00, 0x00, 0x01,
 159                 0xFF, 0xFF, 0x02,
 160                 0x7F, 0xFF, 0x03,
 161                 0x80, 0x00, 0x04,
 162                 0x9f, 0xff, 0x05,
 163                 0x3f, 0xff, 0x06,
 164                 0x01, 0x00, 0x07,
 165                 0xF0, 0x00, 0x08,
 166                 0x20, 0x00, 0x09,
 167                 0x21, 0x00, 0x0A };
 168
 169             memcpy(d, &u24_samples[0], sizeof(u24_samples));
 170             break;
 171         }
 172
 173         case PA_SAMPLE_FLOAT32NE:
 174         case PA_SAMPLE_FLOAT32RE: {
 175             float *u = d;
 176             static const float float_samples[] =
 177               { 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
 178                 0.33f, -.3f, 99.0f, -0.555f, -.123f };
 179
 180             if (ss->format == PA_SAMPLE_FLOAT32RE) {
 181                 for (i = 0; i < 10; i++)
 182                     u[i] = swap_float(float_samples[i]);
 183             } else {
 184               memcpy(d, &float_samples[0], sizeof(float_samples));
 185             }
 186
 187             break;
 188         }
 189
 190         default:
 191             pa_assert_not_reached();
 192     }
 193
 194     pa_memblock_release(r);
 195
 196     return r;
 197 }
 198
 199 int main(int argc, char *argv[]) {
 200     pa_mempool *pool;
 201     pa_sample_spec a;
 202     pa_cvolume v;
 203
 204     oil_init();
 205     pa_log_set_level(PA_LOG_DEBUG);
 206
 207     pa_assert_se(pool = pa_mempool_new(FALSE, 0));
 208
 209     a.channels = 1;
 210     a.rate = 44100;
 211
 212     v.channels = a.channels;
 213     v.values[0] = pa_sw_volume_from_linear(0.9);
 214
 215     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 216         pa_memchunk i, j, k;
 217         pa_mix_info m[2];
 218         void *ptr;
 219
 220         printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
 221
 222         /* Generate block */
 223         i.memblock = generate_block(pool, &a);
 224         i.length = pa_memblock_get_length(i.memblock);
 225         i.index = 0;
 226
 227         dump_block(&a, &i);
 228
 229         /* Make a copy */
 230         j = i;
 231         pa_memblock_ref(j.memblock);
 232         pa_memchunk_make_writable(&j, 0);
 233
 234         /* Adjust volume of the copy */
 235         pa_volume_memchunk(&j, &a, &v);
 236
 237         dump_block(&a, &j);
 238
 239         m[0].chunk = i;
 240         m[0].volume.values[0] = PA_VOLUME_NORM;
 241         m[0].volume.channels = a.channels;
 242         m[1].chunk = j;
 243         m[1].volume.values[0] = PA_VOLUME_NORM;
 244         m[1].volume.channels = a.channels;
 245
 246         k.memblock = pa_memblock_new(pool, i.length);
 247         k.length = i.length;
 248         k.index = 0;
 249
 250         ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
 251         pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
 252         pa_memblock_release(k.memblock);
 253
 254         dump_block(&a, &k);
 255
 256         pa_memblock_unref(i.memblock);
 257         pa_memblock_unref(j.memblock);
 258         pa_memblock_unref(k.memblock);
 259     }
 260
 261     pa_mempool_free(pool);
 262
 263     return 0;
 264 }