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code.delx.au - pulseaudio/blob - src/tests/mix-test.c
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
);