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 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
  36     void *d;
  37     unsigned i;
  38
  39     d = pa_memblock_acquire(chunk->memblock);
  40
  41     switch (ss->format) {
  42
  43         case PA_SAMPLE_U8:
  44         case PA_SAMPLE_ULAW:
  45         case PA_SAMPLE_ALAW: {
  46             uint8_t *u = d;
  47
  48             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  49                 printf("0x%02x ", *(u++));
  50
  51             break;
  52         }
  53
  54         case PA_SAMPLE_S16NE:
  55         case PA_SAMPLE_S16RE: {
  56             uint16_t *u = d;
  57
  58             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  59                 printf("0x%04x ", *(u++));
  60
  61             break;
  62         }
  63
  64         case PA_SAMPLE_S24_32NE:
  65         case PA_SAMPLE_S24_32RE:
  66         case PA_SAMPLE_S32NE:
  67         case PA_SAMPLE_S32RE: {
  68             uint32_t *u = d;
  69
  70             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  71                 printf("0x%08x ", *(u++));
  72
  73             break;
  74         }
  75
  76         case PA_SAMPLE_S24NE:
  77         case PA_SAMPLE_S24RE: {
  78             uint8_t *u = d;
  79
  80             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  81                 printf("0x%02x%02x%02xx ", *u, *(u+1), *(u+2));
  82                 u += 3;
  83             }
  84
  85             break;
  86         }
  87
  88         case PA_SAMPLE_FLOAT32NE:
  89         case PA_SAMPLE_FLOAT32RE: {
  90             float *u = d;
  91
  92             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  93                 printf("%1.5f ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : PA_FLOAT32_SWAP(*u));
  94                 u++;
  95             }
  96
  97             break;
  98         }
  99
 100         default:
 101             pa_assert_not_reached();
 102     }
 103
 104     printf("\n");
 105
 106     pa_memblock_release(chunk->memblock);
 107 }
 108
 109 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
 110     pa_memblock *r;
 111     void *d;
 112     unsigned i;
 113
 114     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 115     d = pa_memblock_acquire(r);
 116
 117     switch (ss->format) {
 118
 119         case PA_SAMPLE_U8:
 120         case PA_SAMPLE_ULAW:
 121         case PA_SAMPLE_ALAW: {
 122             static const uint8_t u8_samples[] = {
 123                 0x00, 0xFF, 0x7F, 0x80, 0x9f,
 124                 0x3f, 0x01, 0xF0, 0x20, 0x21
 125             };
 126
 127             memcpy(d, u8_samples, sizeof(u8_samples));
 128             break;
 129         }
 130
 131         case PA_SAMPLE_S16NE:
 132         case PA_SAMPLE_S16RE: {
 133             static const uint16_t u16_samples[] = {
 134                 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
 135                 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021
 136             };
 137
 138             memcpy(d, u16_samples, sizeof(u16_samples));
 139             break;
 140         }
 141
 142         case PA_SAMPLE_S24_32NE:
 143         case PA_SAMPLE_S24_32RE:
 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
 151             memcpy(d, u32_samples, sizeof(u32_samples));
 152             break;
 153         }
 154
 155         case PA_SAMPLE_S24NE:
 156         case PA_SAMPLE_S24RE: {
 157             /* Need to be on a byte array because they are not aligned */
 158             static const uint8_t u24_samples[] = {
 159                 0x00, 0x00, 0x01,
 160                 0xFF, 0xFF, 0x02,
 161                 0x7F, 0xFF, 0x03,
 162                 0x80, 0x00, 0x04,
 163                 0x9f, 0xff, 0x05,
 164                 0x3f, 0xff, 0x06,
 165                 0x01, 0x00, 0x07,
 166                 0xF0, 0x00, 0x08,
 167                 0x20, 0x00, 0x09,
 168                 0x21, 0x00, 0x0A
 169             };
 170
 171             memcpy(d, u24_samples, sizeof(u24_samples));
 172             break;
 173         }
 174
 175         case PA_SAMPLE_FLOAT32NE:
 176         case PA_SAMPLE_FLOAT32RE: {
 177             float *u = d;
 178             static const float float_samples[] = {
 179                 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
 180                 0.33f, -.3f, 99.0f, -0.555f, -.123f
 181             };
 182
 183             if (ss->format == PA_SAMPLE_FLOAT32RE) {
 184                 for (i = 0; i < 10; i++)
 185                     u[i] = PA_FLOAT32_SWAP(float_samples[i]);
 186             } else
 187               memcpy(d, float_samples, sizeof(float_samples));
 188
 189             break;
 190         }
 191
 192         default:
 193             pa_assert_not_reached();
 194     }
 195
 196     pa_memblock_release(r);
 197
 198     return r;
 199 }
 200
 201 int main(int argc, char *argv[]) {
 202     pa_mempool *pool;
 203     pa_sample_spec a;
 204     pa_cvolume v;
 205
 206     pa_log_set_level(PA_LOG_DEBUG);
 207
 208     pa_assert_se(pool = pa_mempool_new(FALSE, 0));
 209
 210     a.channels = 1;
 211     a.rate = 44100;
 212
 213     v.channels = a.channels;
 214     v.values[0] = pa_sw_volume_from_linear(0.9);
 215
 216     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 217         pa_memchunk i, j, k;
 218         pa_mix_info m[2];
 219         void *ptr;
 220
 221         printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
 222
 223         /* Generate block */
 224         i.memblock = generate_block(pool, &a);
 225         i.length = pa_memblock_get_length(i.memblock);
 226         i.index = 0;
 227
 228         dump_block(&a, &i);
 229
 230         /* Make a copy */
 231         j = i;
 232         pa_memblock_ref(j.memblock);
 233         pa_memchunk_make_writable(&j, 0);
 234
 235         /* Adjust volume of the copy */
 236         pa_volume_memchunk(&j, &a, &v);
 237
 238         dump_block(&a, &j);
 239
 240         m[0].chunk = i;
 241         m[0].volume.values[0] = PA_VOLUME_NORM;
 242         m[0].volume.channels = a.channels;
 243         m[1].chunk = j;
 244         m[1].volume.values[0] = PA_VOLUME_NORM;
 245         m[1].volume.channels = a.channels;
 246
 247         k.memblock = pa_memblock_new(pool, i.length);
 248         k.length = i.length;
 249         k.index = 0;
 250
 251         ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
 252         pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
 253         pa_memblock_release(k.memblock);
 254
 255         dump_block(&a, &k);
 256
 257         pa_memblock_unref(i.memblock);
 258         pa_memblock_unref(j.memblock);
 259         pa_memblock_unref(k.memblock);
 260     }
 261
 262     pa_mempool_free(pool);
 263
 264     return 0;
 265 }