code.delx.au - pulseaudio/blob - src/tests/resampler-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 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("%1.3g ",  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             uint8_t *u = d;
 117
 118             u[0] = 0x00;
 119             u[1] = 0xFF;
 120             u[2] = 0x7F;
 121             u[3] = 0x80;
 122             u[4] = 0x9f;
 123             u[5] = 0x3f;
 124             u[6] = 0x1;
 125             u[7] = 0xF0;
 126             u[8] = 0x20;
 127             u[9] = 0x21;
 128             break;
 129         }
 130
 131         case PA_SAMPLE_S16NE:
 132         case PA_SAMPLE_S16RE: {
 133             uint16_t *u = d;
 134
 135             u[0] = 0x0000;
 136             u[1] = 0xFFFF;
 137             u[2] = 0x7FFF;
 138             u[3] = 0x8000;
 139             u[4] = 0x9fff;
 140             u[5] = 0x3fff;
 141             u[6] = 0x1;
 142             u[7] = 0xF000;
 143             u[8] = 0x20;
 144             u[9] = 0x21;
 145             break;
 146         }
 147
 148         case PA_SAMPLE_S32NE:
 149         case PA_SAMPLE_S32RE: {
 150             uint32_t *u = d;
 151
 152             u[0] = 0x00000001;
 153             u[1] = 0xFFFF0002;
 154             u[2] = 0x7FFF0003;
 155             u[3] = 0x80000004;
 156             u[4] = 0x9fff0005;
 157             u[5] = 0x3fff0006;
 158             u[6] =    0x10007;
 159             u[7] = 0xF0000008;
 160             u[8] =   0x200009;
 161             u[9] =   0x21000A;
 162             break;
 163         }
 164
 165         case PA_SAMPLE_FLOAT32NE:
 166         case PA_SAMPLE_FLOAT32RE: {
 167             float *u = d;
 168
 169             u[0] = 0.0f;
 170             u[1] = -1.0f;
 171             u[2] = 1.0f;
 172             u[3] = 4711.0f;
 173             u[4] = 0.222f;
 174             u[5] = 0.33f;
 175             u[6] = -.3f;
 176             u[7] = 99.0f;
 177             u[8] = -0.555f;
 178             u[9] = -.123f;
 179
 180             if (ss->format == PA_SAMPLE_FLOAT32RE)
 181                 for (i = 0; i < 10; i++)
 182                     u[i] = swap_float(u[i]);
 183
 184             break;
 185         }
 186
 187         default:
 188             pa_assert_not_reached();
 189     }
 190
 191     pa_memblock_release(r);
 192
 193     return r;
 194 }
 195
 196 int main(int argc, char *argv[]) {
 197     pa_mempool *pool;
 198     pa_sample_spec a, b;
 199     pa_cvolume v;
 200
 201     oil_init();
 202     pa_log_set_maximal_level(PA_LOG_DEBUG);
 203
 204     pa_assert_se(pool = pa_mempool_new(FALSE));
 205
 206     a.channels = b.channels = 1;
 207     a.rate = b.rate = 44100;
 208
 209     v.channels = a.channels;
 210     v.values[0] = pa_sw_volume_from_linear(0.5);
 211
 212     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 213         for (b.format = 0; b.format < PA_SAMPLE_MAX; b.format ++) {
 214
 215             pa_resampler *forth, *back;
 216             pa_memchunk i, j, k;
 217
 218             printf("=== %s -> %s -> %s -> /2\n",
 219                    pa_sample_format_to_string(a.format),
 220                    pa_sample_format_to_string(b.format),
 221                    pa_sample_format_to_string(a.format));
 222
 223             pa_assert_se(forth = pa_resampler_new(pool, &a, NULL, &b, NULL, PA_RESAMPLER_AUTO, 0));
 224             pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, 0));
 225
 226             i.memblock = generate_block(pool, &a);
 227             i.length = pa_memblock_get_length(i.memblock);
 228             i.index = 0;
 229             pa_resampler_run(forth, &i, &j);
 230             pa_resampler_run(back, &j, &k);
 231
 232             dump_block(&a, &i);
 233             dump_block(&b, &j);
 234             dump_block(&a, &k);
 235
 236             pa_memblock_unref(j.memblock);
 237             pa_memblock_unref(k.memblock);
 238
 239             pa_volume_memchunk(&i, &a, &v);
 240             dump_block(&a, &i);
 241
 242             pa_memblock_unref(i.memblock);
 243
 244             pa_resampler_free(forth);
 245             pa_resampler_free(back);
 246         }
 247     }
 248
 249     pa_mempool_free(pool);
 250
 251     return 0;
 252 }