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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27
  28 #include <pulse/sample.h>
  29 #include <pulse/volume.h>
  30
  31 #include <pulsecore/resampler.h>
  32 #include <pulsecore/macro.h>
  33 #include <pulsecore/endianmacros.h>
  34 #include <pulsecore/memblock.h>
  35 #include <pulsecore/sample-util.h>
  36
  37 #include <liboil/liboil.h>
  38
  39 static float swap_float(float a) {
  40     uint32_t *b = (uint32_t*) &a;
  41     *b = PA_UINT32_SWAP(*b);
  42     return a;
  43 }
  44
  45 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
  46     void *d;
  47     unsigned i;
  48
  49     d = pa_memblock_acquire(chunk->memblock);
  50
  51     switch (ss->format) {
  52
  53         case PA_SAMPLE_U8:
  54         case PA_SAMPLE_ULAW:
  55         case PA_SAMPLE_ALAW: {
  56             uint8_t *u = d;
  57
  58             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  59                 printf("0x%02x ", *(u++));
  60
  61             break;
  62         }
  63
  64         case PA_SAMPLE_S16NE:
  65         case PA_SAMPLE_S16RE: {
  66             uint16_t *u = d;
  67
  68             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  69                 printf("0x%04x ", *(u++));
  70
  71             break;
  72         }
  73
  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_FLOAT32NE:
  85         case PA_SAMPLE_FLOAT32RE: {
  86             float *u = d;
  87
  88             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  89                 printf("%1.3g ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
  90                 u++;
  91             }
  92
  93             break;
  94         }
  95
  96         default:
  97             pa_assert_not_reached();
  98     }
  99
 100     printf("\n");
 101
 102     pa_memblock_release(chunk->memblock);
 103 }
 104
 105 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
 106     pa_memblock *r;
 107     void *d;
 108     unsigned i;
 109
 110     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 111     d = pa_memblock_acquire(r);
 112
 113     switch (ss->format) {
 114
 115         case PA_SAMPLE_U8:
 116         case PA_SAMPLE_ULAW:
 117         case PA_SAMPLE_ALAW: {
 118             uint8_t *u = d;
 119
 120             u[0] = 0x00;
 121             u[1] = 0xFF;
 122             u[2] = 0x7F;
 123             u[3] = 0x80;
 124             u[4] = 0x9f;
 125             u[5] = 0x3f;
 126             u[6] = 0x1;
 127             u[7] = 0xF0;
 128             u[8] = 0x20;
 129             u[9] = 0x21;
 130             break;
 131         }
 132
 133         case PA_SAMPLE_S16NE:
 134         case PA_SAMPLE_S16RE: {
 135             uint16_t *u = d;
 136
 137             u[0] = 0x0000;
 138             u[1] = 0xFFFF;
 139             u[2] = 0x7FFF;
 140             u[3] = 0x8000;
 141             u[4] = 0x9fff;
 142             u[5] = 0x3fff;
 143             u[6] = 0x1;
 144             u[7] = 0xF000;
 145             u[8] = 0x20;
 146             u[9] = 0x21;
 147             break;
 148         }
 149
 150         case PA_SAMPLE_S32NE:
 151         case PA_SAMPLE_S32RE: {
 152             uint32_t *u = d;
 153
 154             u[0] = 0x00000001;
 155             u[1] = 0xFFFF0002;
 156             u[2] = 0x7FFF0003;
 157             u[3] = 0x80000004;
 158             u[4] = 0x9fff0005;
 159             u[5] = 0x3fff0006;
 160             u[6] =    0x10007;
 161             u[7] = 0xF0000008;
 162             u[8] =   0x200009;
 163             u[9] =   0x21000A;
 164             break;
 165         }
 166
 167         case PA_SAMPLE_FLOAT32NE:
 168         case PA_SAMPLE_FLOAT32RE: {
 169             float *u = d;
 170
 171             u[0] = 0.0;
 172             u[1] = -1.0;
 173             u[2] = 1.0;
 174             u[3] = 4711;
 175             u[4] = 0.222;
 176             u[5] = 0.33;
 177             u[6] = -.3;
 178             u[7] = 99;
 179             u[8] = -0.555;
 180             u[9] = -.123;
 181
 182             if (ss->format == PA_SAMPLE_FLOAT32RE)
 183                 for (i = 0; i < 10; i++)
 184                     u[i] = swap_float(u[i]);
 185
 186             break;
 187         }
 188
 189         default:
 190             pa_assert_not_reached();
 191     }
 192
 193     pa_memblock_release(r);
 194
 195     return r;
 196 }
 197
 198 int main(int argc, char *argv[]) {
 199     pa_mempool *pool;
 200     pa_sample_spec a, b;
 201     pa_cvolume v;
 202
 203     oil_init();
 204     pa_log_set_maximal_level(PA_LOG_DEBUG);
 205
 206     pa_assert_se(pool = pa_mempool_new(FALSE));
 207
 208     a.channels = b.channels = 1;
 209     a.rate = b.rate = 44100;
 210
 211     v.channels = a.channels;
 212     v.values[0] = pa_sw_volume_from_linear(0.5);
 213
 214     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 215         for (b.format = 0; b.format < PA_SAMPLE_MAX; b.format ++) {
 216
 217             pa_resampler *forth, *back;
 218             pa_memchunk i, j, k;
 219
 220             printf("=== %s -> %s -> %s -> /2\n",
 221                    pa_sample_format_to_string(a.format),
 222                    pa_sample_format_to_string(b.format),
 223                    pa_sample_format_to_string(a.format));
 224
 225             pa_assert_se(forth = pa_resampler_new(pool, &a, NULL, &b, NULL, PA_RESAMPLER_AUTO, 0));
 226             pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, 0));
 227
 228             i.memblock = generate_block(pool, &a);
 229             i.length = pa_memblock_get_length(i.memblock);
 230             i.index = 0;
 231             pa_resampler_run(forth, &i, &j);
 232             pa_resampler_run(back, &j, &k);
 233
 234             dump_block(&a, &i);
 235             dump_block(&b, &j);
 236             dump_block(&a, &k);
 237
 238             pa_memblock_unref(j.memblock);
 239             pa_memblock_unref(k.memblock);
 240
 241             pa_volume_memchunk(&i, &a, &v);
 242             dump_block(&a, &i);
 243
 244             pa_memblock_unref(i.memblock);
 245
 246             pa_resampler_free(forth);
 247             pa_resampler_free(back);
 248         }
 249     }
 250
 251     pa_mempool_free(pool);
 252
 253     return 0;
 254 }