2 This file is part of PulseAudio.
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.
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.
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
26 #include <pulse/sample.h>
27 #include <pulse/volume.h>
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>
35 #include <liboil/liboil.h>
37 static float swap_float(float a) {
38 uint32_t *b = (uint32_t*) &a;
39 *b = PA_UINT32_SWAP(*b);
43 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
47 d = pa_memblock_acquire(chunk->memblock);
53 case PA_SAMPLE_ALAW: {
56 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
57 printf("0x%02x ", *(u++));
63 case PA_SAMPLE_S16RE: {
66 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
67 printf("0x%04x ", *(u++));
73 case PA_SAMPLE_S32RE: {
76 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
77 printf("0x%08x ", *(u++));
82 case PA_SAMPLE_FLOAT32NE:
83 case PA_SAMPLE_FLOAT32RE: {
86 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
87 printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
95 pa_assert_not_reached();
100 pa_memblock_release(chunk->memblock);
103 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
108 pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
109 d = pa_memblock_acquire(r);
111 switch (ss->format) {
115 case PA_SAMPLE_ALAW: {
131 case PA_SAMPLE_S16NE:
132 case PA_SAMPLE_S16RE: {
148 case PA_SAMPLE_S32NE:
149 case PA_SAMPLE_S32RE: {
165 case PA_SAMPLE_FLOAT32NE:
166 case PA_SAMPLE_FLOAT32RE: {
180 if (ss->format == PA_SAMPLE_FLOAT32RE)
181 for (i = 0; i < 10; i++)
182 u[i] = swap_float(u[i]);
188 pa_assert_not_reached();
191 pa_memblock_release(r);
196 int main(int argc, char *argv[]) {
202 pa_log_set_maximal_level(PA_LOG_DEBUG);
204 pa_assert_se(pool = pa_mempool_new(FALSE));
209 v.channels = a.channels;
210 v.values[0] = pa_sw_volume_from_linear(0.9);
212 for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
217 printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
220 i.memblock = generate_block(pool, &a);
221 i.length = pa_memblock_get_length(i.memblock);
226 pa_memblock_ref(j.memblock);
227 pa_memchunk_make_writable(&j, 0);
229 /* Adjust volume of the copy */
230 pa_volume_memchunk(&j, &a, &v);
233 m[0].volume.values[0] = PA_VOLUME_NORM;
234 m[0].volume.channels = a.channels;
236 m[1].volume.values[0] = PA_VOLUME_NORM;
237 m[1].volume.channels = a.channels;
239 k.memblock = pa_memblock_new(pool, i.length);
243 ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
244 pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
245 pa_memblock_release(k.memblock);
251 pa_memblock_unref(i.memblock);
252 pa_memblock_unref(j.memblock);
253 pa_memblock_unref(k.memblock);
256 pa_mempool_free(pool);