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 2.1 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/macro.h>
30 #include <pulsecore/endianmacros.h>
31 #include <pulsecore/memblock.h>
32 #include <pulsecore/sample-util.h>
34 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
38 d = pa_memblock_acquire(chunk->memblock);
44 case PA_SAMPLE_ALAW: {
47 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
48 printf("0x%02x ", *(u++));
54 case PA_SAMPLE_S16RE: {
57 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
58 printf("0x%04x ", *(u++));
63 case PA_SAMPLE_S24_32NE:
64 case PA_SAMPLE_S24_32RE:
66 case PA_SAMPLE_S32RE: {
69 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
70 printf("0x%08x ", *(u++));
76 case PA_SAMPLE_S24RE: {
79 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
80 printf("0x%02x%02x%02xx ", *u, *(u+1), *(u+2));
87 case PA_SAMPLE_FLOAT32NE:
88 case PA_SAMPLE_FLOAT32RE: {
91 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
92 printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : PA_FLOAT32_SWAP(*u));
100 pa_assert_not_reached();
105 pa_memblock_release(chunk->memblock);
108 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
113 pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
114 d = pa_memblock_acquire(r);
116 switch (ss->format) {
120 case PA_SAMPLE_ALAW: {
121 static const uint8_t u8_samples[] = {
122 0x00, 0xFF, 0x7F, 0x80, 0x9f,
123 0x3f, 0x01, 0xF0, 0x20, 0x21
126 memcpy(d, u8_samples, sizeof(u8_samples));
130 case PA_SAMPLE_S16NE:
131 case PA_SAMPLE_S16RE: {
132 static const uint16_t u16_samples[] = {
133 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
134 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021
137 memcpy(d, u16_samples, sizeof(u16_samples));
141 case PA_SAMPLE_S24_32NE:
142 case PA_SAMPLE_S24_32RE:
143 case PA_SAMPLE_S32NE:
144 case PA_SAMPLE_S32RE: {
145 static const uint32_t u32_samples[] = {
146 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
147 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A
150 memcpy(d, u32_samples, sizeof(u32_samples));
154 case PA_SAMPLE_S24NE:
155 case PA_SAMPLE_S24RE: {
156 /* Need to be on a byte array because they are not aligned */
157 static const uint8_t u24_samples[] = {
170 memcpy(d, u24_samples, sizeof(u24_samples));
174 case PA_SAMPLE_FLOAT32NE:
175 case PA_SAMPLE_FLOAT32RE: {
177 static const float float_samples[] = {
178 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
179 0.33f, -.3f, 99.0f, -0.555f, -.123f
182 if (ss->format == PA_SAMPLE_FLOAT32RE) {
183 for (i = 0; i < 10; i++)
184 u[i] = PA_FLOAT32_SWAP(float_samples[i]);
186 memcpy(d, float_samples, sizeof(float_samples));
192 pa_assert_not_reached();
195 pa_memblock_release(r);
200 int main(int argc, char *argv[]) {
205 pa_log_set_level(PA_LOG_DEBUG);
207 pa_assert_se(pool = pa_mempool_new(FALSE, 0));
212 v.channels = a.channels;
213 v.values[0] = pa_sw_volume_from_linear(0.9);
215 for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
220 printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
223 i.memblock = generate_block(pool, &a);
224 i.length = pa_memblock_get_length(i.memblock);
231 pa_memblock_ref(j.memblock);
232 pa_memchunk_make_writable(&j, 0);
234 /* Adjust volume of the copy */
235 pa_volume_memchunk(&j, &a, &v);
240 m[0].volume.values[0] = PA_VOLUME_NORM;
241 m[0].volume.channels = a.channels;
243 m[1].volume.values[0] = PA_VOLUME_NORM;
244 m[1].volume.channels = a.channels;
246 k.memblock = pa_memblock_new(pool, i.length);
250 ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
251 pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
252 pa_memblock_release(k.memblock);
256 pa_memblock_unref(i.memblock);
257 pa_memblock_unref(j.memblock);
258 pa_memblock_unref(k.memblock);
261 pa_mempool_free(pool);