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 #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: {
116 static const uint8_t u8_samples[] =
117 { 0x00, 0xFF, 0x7F, 0x80, 0x9f,
118 0x3f, 0x01, 0xF0, 0x20, 0x21 };
120 memcpy(d, &u8_samples[0], sizeof(u8_samples));
124 case PA_SAMPLE_S16NE:
125 case PA_SAMPLE_S16RE: {
126 static const uint16_t u16_samples[] =
127 { 0x0000, 0xFFFF, 0x7FFF, 0x8000, 0x9fff,
128 0x3fff, 0x0001, 0xF000, 0x0020, 0x0021 };
130 memcpy(d, &u16_samples[0], sizeof(u16_samples));
134 case PA_SAMPLE_S32NE:
135 case PA_SAMPLE_S32RE: {
136 static const uint32_t u32_samples[] =
137 { 0x00000001, 0xFFFF0002, 0x7FFF0003, 0x80000004, 0x9fff0005,
138 0x3fff0006, 0x00010007, 0xF0000008, 0x00200009, 0x0021000A };
140 memcpy(d, &u32_samples[0], sizeof(u32_samples));
144 case PA_SAMPLE_FLOAT32NE:
145 case PA_SAMPLE_FLOAT32RE: {
147 static const float float_samples[] =
148 { 0.0f, -1.0f, 1.0f, 4711.0f, 0.222f,
149 0.33f, -.3f, 99.0f, -0.555f, -.123f };
151 if (ss->format == PA_SAMPLE_FLOAT32RE) {
152 for (i = 0; i < 10; i++)
153 u[i] = swap_float(float_samples[i]);
155 memcpy(d, &float_samples[0], sizeof(float_samples));
162 pa_assert_not_reached();
165 pa_memblock_release(r);
170 int main(int argc, char *argv[]) {
176 pa_log_set_level(PA_LOG_DEBUG);
178 pa_assert_se(pool = pa_mempool_new(FALSE, 0));
183 v.channels = a.channels;
184 v.values[0] = pa_sw_volume_from_linear(0.9);
186 for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
191 printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
194 i.memblock = generate_block(pool, &a);
195 i.length = pa_memblock_get_length(i.memblock);
202 pa_memblock_ref(j.memblock);
203 pa_memchunk_make_writable(&j, 0);
205 /* Adjust volume of the copy */
206 pa_volume_memchunk(&j, &a, &v);
211 m[0].volume.values[0] = PA_VOLUME_NORM;
212 m[0].volume.channels = a.channels;
214 m[1].volume.values[0] = PA_VOLUME_NORM;
215 m[1].volume.channels = a.channels;
217 k.memblock = pa_memblock_new(pool, i.length);
221 ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
222 pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
223 pa_memblock_release(k.memblock);
227 pa_memblock_unref(i.memblock);
228 pa_memblock_unref(j.memblock);
229 pa_memblock_unref(k.memblock);
232 pa_mempool_free(pool);