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_S24_32NE:
  73         case PA_SAMPLE_S24_32RE:
  74         case PA_SAMPLE_S32NE:
  75         case PA_SAMPLE_S32RE: {
  76             uint32_t *u = d;
  77
  78             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  79                 printf("0x%08x ", *(u++));
  80
  81             break;
  82         }
  83
  84         case PA_SAMPLE_S24NE:
  85         case PA_SAMPLE_S24RE: {
  86             uint8_t *u = d;
  87
  88             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  89                 printf("0x%02x%02x%02xx ", *u, *(u+1), *(u+2));
  90                 u += 3;
  91             }
  92
  93             break;
  94         }
  95
  96         case PA_SAMPLE_FLOAT32NE:
  97         case PA_SAMPLE_FLOAT32RE: {
  98             float *u = d;
  99
 100             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
 101                 printf("%1.5f ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
 102                 u++;
 103             }
 104
 105             break;
 106         }
 107
 108         default:
 109             pa_assert_not_reached();
 110     }
 111
 112     printf("\n");
 113
 114     pa_memblock_release(chunk->memblock);
 115 }
 116
 117 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
 118     pa_memblock *r;
 119     void *d;
 120     unsigned i;
 121
 122     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 123     d = pa_memblock_acquire(r);
 124
 125     switch (ss->format) {
 126
 127         case PA_SAMPLE_U8:
 128         case PA_SAMPLE_ULAW:
 129         case PA_SAMPLE_ALAW: {
 130             static const uint8_t u8_samples[] = {
 131                 0x00, 0xFF, 0x7F, 0x80, 0x9f,
 132                 0x3f, 0x01, 0xF0, 0x20, 0x21
 133             };
 134
 135             memcpy(d, u8_samples, sizeof(u8_samples));
 136             break;
 137         }
 138
 139         case PA_SAMPLE_S16NE:
 140         case PA_SAMPLE_S16RE: {
 141             static const uint16_t u16_samples[] = {
 142                 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
 143                 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021
 144             };
 145
 146             memcpy(d, u16_samples, sizeof(u16_samples));
 147             break;
 148         }
 149
 150         case PA_SAMPLE_S24_32NE:
 151         case PA_SAMPLE_S24_32RE:
 152         case PA_SAMPLE_S32NE:
 153         case PA_SAMPLE_S32RE: {
 154             static const uint32_t u32_samples[] = {
 155                 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
 156                 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A
 157             };
 158
 159             memcpy(d, u32_samples, sizeof(u32_samples));
 160             break;
 161         }
 162
 163         case PA_SAMPLE_S24NE:
 164         case PA_SAMPLE_S24RE: {
 165             /* Need to be on a byte array because they are not aligned */
 166             static const uint8_t u24_samples[] = {
 167                 0x00, 0x00, 0x01,
 168                 0xFF, 0xFF, 0x02,
 169                 0x7F, 0xFF, 0x03,
 170                 0x80, 0x00, 0x04,
 171                 0x9f, 0xff, 0x05,
 172                 0x3f, 0xff, 0x06,
 173                 0x01, 0x00, 0x07,
 174                 0xF0, 0x00, 0x08,
 175                 0x20, 0x00, 0x09,
 176                 0x21, 0x00, 0x0A
 177             };
 178
 179             memcpy(d, u24_samples, sizeof(u24_samples));
 180             break;
 181         }
 182
 183         case PA_SAMPLE_FLOAT32NE:
 184         case PA_SAMPLE_FLOAT32RE: {
 185             float *u = d;
 186             static const float float_samples[] = {
 187                 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
 188                 0.33f, -.3f, 99.0f, -0.555f, -.123f
 189             };
 190
 191             if (ss->format == PA_SAMPLE_FLOAT32RE) {
 192                 for (i = 0; i < 10; i++)
 193                     u[i] = swap_float(float_samples[i]);
 194             } else
 195               memcpy(d, float_samples, sizeof(float_samples));
 196
 197             break;
 198         }
 199
 200         default:
 201             pa_assert_not_reached();
 202     }
 203
 204     pa_memblock_release(r);
 205
 206     return r;
 207 }
 208
 209 int main(int argc, char *argv[]) {
 210     pa_mempool *pool;
 211     pa_sample_spec a;
 212     pa_cvolume v;
 213
 214     oil_init();
 215     pa_log_set_level(PA_LOG_DEBUG);
 216
 217     pa_assert_se(pool = pa_mempool_new(FALSE, 0));
 218
 219     a.channels = 1;
 220     a.rate = 44100;
 221
 222     v.channels = a.channels;
 223     v.values[0] = pa_sw_volume_from_linear(0.9);
 224
 225     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 226         pa_memchunk i, j, k;
 227         pa_mix_info m[2];
 228         void *ptr;
 229
 230         printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
 231
 232         /* Generate block */
 233         i.memblock = generate_block(pool, &a);
 234         i.length = pa_memblock_get_length(i.memblock);
 235         i.index = 0;
 236
 237         dump_block(&a, &i);
 238
 239         /* Make a copy */
 240         j = i;
 241         pa_memblock_ref(j.memblock);
 242         pa_memchunk_make_writable(&j, 0);
 243
 244         /* Adjust volume of the copy */
 245         pa_volume_memchunk(&j, &a, &v);
 246
 247         dump_block(&a, &j);
 248
 249         m[0].chunk = i;
 250         m[0].volume.values[0] = PA_VOLUME_NORM;
 251         m[0].volume.channels = a.channels;
 252         m[1].chunk = j;
 253         m[1].volume.values[0] = PA_VOLUME_NORM;
 254         m[1].volume.channels = a.channels;
 255
 256         k.memblock = pa_memblock_new(pool, i.length);
 257         k.length = i.length;
 258         k.index = 0;
 259
 260         ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
 261         pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
 262         pa_memblock_release(k.memblock);
 263
 264         dump_block(&a, &k);
 265
 266         pa_memblock_unref(i.memblock);
 267         pa_memblock_unref(j.memblock);
 268         pa_memblock_unref(k.memblock);
 269     }
 270
 271     pa_mempool_free(pool);
 272
 273     return 0;
 274 }