1 /* $Id: resampler-test.c 2037 2007-11-09 02:45:07Z lennart $ */
4 This file is part of PulseAudio.
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.
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.
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
28 #include <pulse/sample.h>
29 #include <pulse/volume.h>
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>
37 #include <liboil/liboil.h>
39 static float swap_float(float a) {
40 uint32_t *b = (uint32_t*) &a;
41 *b = PA_UINT32_SWAP(*b);
45 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
49 d = pa_memblock_acquire(chunk->memblock);
55 case PA_SAMPLE_ALAW: {
58 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
59 printf("0x%02x ", *(u++));
65 case PA_SAMPLE_S16RE: {
68 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
69 printf("0x%04x ", *(u++));
75 case PA_SAMPLE_S32RE: {
78 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
79 printf("0x%08x ", *(u++));
84 case PA_SAMPLE_FLOAT32NE:
85 case PA_SAMPLE_FLOAT32RE: {
88 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
89 printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
97 pa_assert_not_reached();
102 pa_memblock_release(chunk->memblock);
105 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
110 pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
111 d = pa_memblock_acquire(r);
113 switch (ss->format) {
117 case PA_SAMPLE_ALAW: {
133 case PA_SAMPLE_S16NE:
134 case PA_SAMPLE_S16RE: {
150 case PA_SAMPLE_S32NE:
151 case PA_SAMPLE_S32RE: {
167 case PA_SAMPLE_FLOAT32NE:
168 case PA_SAMPLE_FLOAT32RE: {
182 if (ss->format == PA_SAMPLE_FLOAT32RE)
183 for (i = 0; i < 10; i++)
184 u[i] = swap_float(u[i]);
190 pa_assert_not_reached();
193 pa_memblock_release(r);
198 int main(int argc, char *argv[]) {
204 pa_log_set_maximal_level(PA_LOG_DEBUG);
206 pa_assert_se(pool = pa_mempool_new(FALSE));
211 v.channels = a.channels;
212 v.values[0] = pa_sw_volume_from_linear(0.9);
214 for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
219 printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
222 i.memblock = generate_block(pool, &a);
223 i.length = pa_memblock_get_length(i.memblock);
228 pa_memblock_ref(j.memblock);
229 pa_memchunk_make_writable(&j, 0);
231 /* Adjust volume of the copy */
232 pa_volume_memchunk(&j, &a, &v);
235 m[0].volume.values[0] = PA_VOLUME_NORM;
236 m[0].volume.channels = a.channels;
238 m[1].volume.values[0] = PA_VOLUME_NORM;
239 m[1].volume.channels = a.channels;
241 k.memblock = pa_memblock_new(pool, i.length);
245 ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
246 pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
247 pa_memblock_release(k.memblock);
253 pa_memblock_unref(i.memblock);
254 pa_memblock_unref(j.memblock);
255 pa_memblock_unref(k.memblock);
258 pa_mempool_free(pool);