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_FLOAT32NE:
  75         case PA_SAMPLE_FLOAT32RE: {
  76             float *u = d;
  77
  78             for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
  79                 printf("%1.3g ",  ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
  80                 u++;
  81             }
  82
  83             break;
  84         }
  85
  86         default:
  87             pa_assert_not_reached();
  88     }
  89
  90     printf("\n");
  91
  92     pa_memblock_release(chunk->memblock);
  93 }
  94
  95 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
  96     pa_memblock *r;
  97     void *d;
  98     unsigned i;
  99
 100     pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
 101     d = pa_memblock_acquire(r);
 102
 103     switch (ss->format) {
 104
 105         case PA_SAMPLE_U8:
 106         case PA_SAMPLE_ULAW:
 107         case PA_SAMPLE_ALAW: {
 108             uint8_t *u = d;
 109
 110             u[0] = 0x00;
 111             u[1] = 0xFF;
 112             u[2] = 0x7F;
 113             u[3] = 0x80;
 114             u[4] = 0x9f;
 115             u[5] = 0x3f;
 116             u[6] = 0x1;
 117             u[7] = 0xF0;
 118             u[8] = 0x20;
 119             u[9] = 0x21;
 120             break;
 121         }
 122
 123         case PA_SAMPLE_S16NE:
 124         case PA_SAMPLE_S16RE: {
 125             uint16_t *u = d;
 126
 127             u[0] = 0x0000;
 128             u[1] = 0xFFFF;
 129             u[2] = 0x7FFF;
 130             u[3] = 0x8000;
 131             u[4] = 0x9fff;
 132             u[5] = 0x3fff;
 133             u[6] = 0x1;
 134             u[7] = 0xF000;
 135             u[8] = 0x20;
 136             u[9] = 0x21;
 137             break;
 138         }
 139
 140         case PA_SAMPLE_FLOAT32NE:
 141         case PA_SAMPLE_FLOAT32RE: {
 142             float *u = d;
 143
 144             u[0] = 0.0;
 145             u[1] = -1.0;
 146             u[2] = 1.0;
 147             u[3] = 4711;
 148             u[4] = 0.222;
 149             u[5] = 0.33;
 150             u[6] = -.3;
 151             u[7] = 99;
 152             u[8] = -0.555;
 153             u[9] = -.123;
 154
 155             if (ss->format == PA_SAMPLE_FLOAT32RE)
 156                 for (i = 0; i < 10; i++)
 157                     u[i] = swap_float(u[i]);
 158
 159             break;
 160         }
 161
 162         default:
 163             pa_assert_not_reached();
 164     }
 165
 166     pa_memblock_release(r);
 167
 168     return r;
 169 }
 170
 171 int main(int argc, char *argv[]) {
 172     pa_mempool *pool;
 173     pa_sample_spec a, b;
 174     pa_cvolume v;
 175
 176     oil_init();
 177     pa_log_set_maximal_level(PA_LOG_DEBUG);
 178
 179     pa_assert_se(pool = pa_mempool_new(FALSE));
 180
 181     a.channels = b.channels = 1;
 182     a.rate = b.rate = 44100;
 183
 184     v.channels = a.channels;
 185     v.values[0] = pa_sw_volume_from_linear(0.5);
 186
 187     for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
 188         for (b.format = 0; b.format < PA_SAMPLE_MAX; b.format ++) {
 189
 190             pa_resampler *forth, *back;
 191             pa_memchunk i, j, k;
 192
 193             printf("=== %s -> %s -> %s -> /2\n",
 194                    pa_sample_format_to_string(a.format),
 195                    pa_sample_format_to_string(b.format),
 196                    pa_sample_format_to_string(a.format));
 197
 198             pa_assert_se(forth = pa_resampler_new(pool, &a, NULL, &b, NULL, PA_RESAMPLER_AUTO, FALSE));
 199             pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, FALSE));
 200
 201             i.memblock = generate_block(pool, &a);
 202             i.length = pa_memblock_get_length(i.memblock);
 203             i.index = 0;
 204             pa_resampler_run(forth, &i, &j);
 205             pa_resampler_run(back, &j, &k);
 206
 207             dump_block(&a, &i);
 208             dump_block(&b, &j);
 209             dump_block(&a, &k);
 210
 211             pa_memblock_unref(j.memblock);
 212             pa_memblock_unref(k.memblock);
 213
 214             pa_volume_memchunk(&i, &a, &v);
 215             dump_block(&a, &i);
 216
 217             pa_memblock_unref(i.memblock);
 218
 219             pa_resampler_free(forth);
 220             pa_resampler_free(back);
 221         }
 222     }
 223
 224     pa_mempool_free(pool);
 225
 226     return 0;
 227 }