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/resampler.h>
30 #include <pulsecore/macro.h>
31 #include <pulsecore/endianmacros.h>
32 #include <pulsecore/memblock.h>
33 #include <pulsecore/sample-util.h>
35 static float swap_float(float a) {
36 uint32_t *b = (uint32_t*) &a;
37 *b = PA_UINT32_SWAP(*b);
41 static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
45 d = pa_memblock_acquire(chunk->memblock);
51 case PA_SAMPLE_ALAW: {
54 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
55 printf("0x%02x ", *(u++));
61 case PA_SAMPLE_S16RE: {
64 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
65 printf("0x%04x ", *(u++));
70 case PA_SAMPLE_S24_32NE:
71 case PA_SAMPLE_S24_32RE:
73 case PA_SAMPLE_S32RE: {
76 for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
77 printf("0x%08x ", *(u++));
83 case PA_SAMPLE_S24RE: {
86 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
87 printf("0x%02x%02x%02xx ", *u, *(u+1), *(u+2));
94 case PA_SAMPLE_FLOAT32NE:
95 case PA_SAMPLE_FLOAT32RE: {
98 for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
99 printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
107 pa_assert_not_reached();
112 pa_memblock_release(chunk->memblock);
115 static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
120 pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
121 d = pa_memblock_acquire(r);
123 switch (ss->format) {
127 case PA_SAMPLE_ALAW: {
128 static const uint8_t u8_samples[] = {
129 0x00, 0xFF, 0x7F, 0x80, 0x9f,
130 0x3f, 0x01, 0xF0, 0x20, 0x21
133 memcpy(d, u8_samples, sizeof(u8_samples));
137 case PA_SAMPLE_S16NE:
138 case PA_SAMPLE_S16RE: {
139 static const uint16_t u16_samples[] = {
140 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
141 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021
144 memcpy(d, u16_samples, sizeof(u16_samples));
148 case PA_SAMPLE_S24_32NE:
149 case PA_SAMPLE_S24_32RE:
150 case PA_SAMPLE_S32NE:
151 case PA_SAMPLE_S32RE: {
152 static const uint32_t u32_samples[] = {
153 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
154 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A
157 memcpy(d, u32_samples, sizeof(u32_samples));
161 case PA_SAMPLE_S24NE:
162 case PA_SAMPLE_S24RE: {
163 /* Need to be on a byte array because they are not aligned */
164 static const uint8_t u24_samples[] = {
177 memcpy(d, u24_samples, sizeof(u24_samples));
181 case PA_SAMPLE_FLOAT32NE:
182 case PA_SAMPLE_FLOAT32RE: {
184 static const float float_samples[] = {
185 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
186 0.33f, -.3f, 99.0f, -0.555f, -.123f
189 if (ss->format == PA_SAMPLE_FLOAT32RE) {
190 for (i = 0; i < 10; i++)
191 u[i] = swap_float(float_samples[i]);
193 memcpy(d, float_samples, sizeof(float_samples));
199 pa_assert_not_reached();
202 pa_memblock_release(r);
207 int main(int argc, char *argv[]) {
212 pa_log_set_level(PA_LOG_DEBUG);
214 pa_assert_se(pool = pa_mempool_new(FALSE, 0));
219 v.channels = a.channels;
220 v.values[0] = pa_sw_volume_from_linear(0.9);
222 for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
227 printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
230 i.memblock = generate_block(pool, &a);
231 i.length = pa_memblock_get_length(i.memblock);
238 pa_memblock_ref(j.memblock);
239 pa_memchunk_make_writable(&j, 0);
241 /* Adjust volume of the copy */
242 pa_volume_memchunk(&j, &a, &v);
247 m[0].volume.values[0] = PA_VOLUME_NORM;
248 m[0].volume.channels = a.channels;
250 m[1].volume.values[0] = PA_VOLUME_NORM;
251 m[1].volume.channels = a.channels;
253 k.memblock = pa_memblock_new(pool, i.length);
257 ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
258 pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
259 pa_memblock_release(k.memblock);
263 pa_memblock_unref(i.memblock);
264 pa_memblock_unref(j.memblock);
265 pa_memblock_unref(k.memblock);
268 pa_mempool_free(pool);