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 2.1 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 void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
  38     void *d;
  39     unsigned i;
  40
  41     d = pa_memblock_acquire(chunk->memblock);
  42
  43     switch (ss->format) {
  44
  45         case PA_SAMPLE_U8:
  46         case PA_SAMPLE_ULAW:
  47         case PA_SAMPLE_ALAW: {
  48             uint8_t *u = d;
  49
  50             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  51                 printf("0x%02x ", *(u++));
  52
  53             break;
  54         }
  55
  56         case PA_SAMPLE_S16NE:
  57         case PA_SAMPLE_S16RE: {
  58             uint16_t *u = d;
  59
  60             for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
  61                 printf("0x%04x ", *(u++));
  62
  63             break;
  64         }
  65
  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_FLOAT32NE:
  77         case PA_SAMPLE_FLOAT32RE: {
  78             float *u = d;
  79
  80             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  81                 printf("%4.3g ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : PA_FLOAT32_SWAP(*u));
  82                 u++;
  83             }
  84
  85             break;
  86         }
  87
  88         default:
  89             pa_assert_not_reached();
  90     }
  91
  92     printf("\n");
  93
  94     pa_memblock_release(chunk->memblock);
  95 }
  96
  97 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
  98     pa_memblock *r;
  99     void *d;
 100     unsigned i;
 101
 102     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 103     d = pa_memblock_acquire(r);
 104
 105     switch (ss->format) {
 106
 107         case PA_SAMPLE_U8:
 108         case PA_SAMPLE_ULAW:
 109         case PA_SAMPLE_ALAW: {
 110             uint8_t *u = d;
 111
 112             u[0] = 0x00;
 113             u[1] = 0xFF;
 114             u[2] = 0x7F;
 115             u[3] = 0x80;
 116             u[4] = 0x9f;
 117             u[5] = 0x3f;
 118             u[6] = 0x1;
 119             u[7] = 0xF0;
 120             u[8] = 0x20;
 121             u[9] = 0x21;
 122             break;
 123         }
 124
 125         case PA_SAMPLE_S16NE:
 126         case PA_SAMPLE_S16RE: {
 127             uint16_t *u = d;
 128
 129             u[0] = 0x0000;
 130             u[1] = 0xFFFF;
 131             u[2] = 0x7FFF;
 132             u[3] = 0x8000;
 133             u[4] = 0x9fff;
 134             u[5] = 0x3fff;
 135             u[6] = 0x1;
 136             u[7] = 0xF000;
 137             u[8] = 0x20;
 138             u[9] = 0x21;
 139             break;
 140         }
 141
 142         case PA_SAMPLE_S32NE:
 143         case PA_SAMPLE_S32RE: {
 144             uint32_t *u = d;
 145
 146             u[0] = 0x00000001;
 147             u[1] = 0xFFFF0002;
 148             u[2] = 0x7FFF0003;
 149             u[3] = 0x80000004;
 150             u[4] = 0x9fff0005;
 151             u[5] = 0x3fff0006;
 152             u[6] =    0x10007;
 153             u[7] = 0xF0000008;
 154             u[8] =   0x200009;
 155             u[9] =   0x21000A;
 156             break;
 157         }
 158
 159         case PA_SAMPLE_FLOAT32NE:
 160         case PA_SAMPLE_FLOAT32RE: {
 161             float *u = d;
 162
 163             u[0] = 0.0f;
 164             u[1] = -1.0f;
 165             u[2] = 1.0f;
 166             u[3] = 4711.0f;
 167             u[4] = 0.222f;
 168             u[5] = 0.33f;
 169             u[6] = -.3f;
 170             u[7] = 99.0f;
 171             u[8] = -0.555f;
 172             u[9] = -.123f;
 173
 174             if (ss->format == PA_SAMPLE_FLOAT32RE)
 175                 for (i = 0; i < 10; i++)
 176                     u[i] = PA_FLOAT32_SWAP(u[i]);
 177
 178             break;
 179         }
 180
 181         default:
 182             pa_assert_not_reached();
 183     }
 184
 185     pa_memblock_release(r);
 186
 187     return r;
 188 }
 189
 190 int main(int argc, char *argv[]) {
 191     pa_mempool *pool;
 192     pa_sample_spec a, b;
 193     pa_cvolume v;
 194
 195     oil_init();
 196     pa_log_set_level(PA_LOG_DEBUG);
 197
 198     pa_assert_se(pool = pa_mempool_new(FALSE, 0));
 199
 200     a.channels = b.channels = 1;
 201     a.rate = b.rate = 44100;
 202
 203     v.channels = a.channels;
 204     v.values[0] = pa_sw_volume_from_linear(0.5);
 205
 206     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 207         for (b.format = 0; b.format < PA_SAMPLE_MAX; b.format ++) {
 208
 209             pa_resampler *forth, *back;
 210             pa_memchunk i, j, k;
 211
 212             printf("=== %s -> %s -> %s -> /2\n",
 213                    pa_sample_format_to_string(a.format),
 214                    pa_sample_format_to_string(b.format),
 215                    pa_sample_format_to_string(a.format));
 216
 217             pa_assert_se(forth = pa_resampler_new(pool, &a, NULL, &b, NULL, PA_RESAMPLER_AUTO, 0));
 218             pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, 0));
 219
 220             i.memblock = generate_block(pool, &a);
 221             i.length = pa_memblock_get_length(i.memblock);
 222             i.index = 0;
 223             pa_resampler_run(forth, &i, &j);
 224             pa_resampler_run(back, &j, &k);
 225
 226             dump_block(&a, &i);
 227             dump_block(&b, &j);
 228             dump_block(&a, &k);
 229
 230             pa_memblock_unref(j.memblock);
 231             pa_memblock_unref(k.memblock);
 232
 233             pa_volume_memchunk(&i, &a, &v);
 234             dump_block(&a, &i);
 235
 236             pa_memblock_unref(i.memblock);
 237
 238             pa_resampler_free(forth);
 239             pa_resampler_free(back);
 240         }
 241     }
 242
 243     pa_mempool_free(pool);
 244
 245     return 0;
 246 }