1 /***
2 This file is part of PulseAudio.
3
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.
8
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.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
16 ***/
17
18 #ifdef HAVE_CONFIG_H
19 #include <config.h>
20 #endif
21
22 #include <stdio.h>
23
24 #include <pulse/sample.h>
25
26 #include <pulsecore/resampler.h>
27 #include <pulsecore/macro.h>
28 #include <pulsecore/memblock.h>
29
30 struct resample_flags {
31 const char *str;
32 pa_resample_flags_t value;
33 };
34
35 /* Call like this to get an initializer for struct resample_flags:
36 * RESAMPLE_FLAGS(PA_RESAMPLER_PRODUCE_LFE)
37 */
38 #define RESAMPLE_FLAGS(flags) { .str = #flags, .value = (flags) }
39
40
main(int argc,char * argv[])41 int main(int argc, char *argv[]) {
42
43 static const pa_channel_map maps[] = {
44 { 1, { PA_CHANNEL_POSITION_MONO } },
45 { 2, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT } },
46 { 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER } },
47 { 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_LFE } },
48 { 3, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_CENTER } },
49 { 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_LFE } },
50 { 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_REAR_CENTER } },
51 { 4, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT } },
52 { 5, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_CENTER } },
53 { 5, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE } },
54 { 6, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE, PA_CHANNEL_POSITION_CENTER } },
55 { 8, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, PA_CHANNEL_POSITION_LFE, PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT } },
56 { 0, { 0 } }
57 };
58
59 static const struct resample_flags flag_sets[] = {
60 RESAMPLE_FLAGS(0),
61 RESAMPLE_FLAGS(PA_RESAMPLER_NO_REMAP),
62 RESAMPLE_FLAGS(PA_RESAMPLER_NO_REMIX),
63 RESAMPLE_FLAGS(PA_RESAMPLER_PRODUCE_LFE),
64 RESAMPLE_FLAGS(PA_RESAMPLER_NO_FILL_SINK),
65 RESAMPLE_FLAGS(PA_RESAMPLER_PRODUCE_LFE | PA_RESAMPLER_NO_FILL_SINK),
66 RESAMPLE_FLAGS(PA_RESAMPLER_CONSUME_LFE),
67 RESAMPLE_FLAGS(PA_RESAMPLER_CONSUME_LFE | PA_RESAMPLER_NO_FILL_SINK),
68 RESAMPLE_FLAGS(PA_RESAMPLER_PRODUCE_LFE | PA_RESAMPLER_CONSUME_LFE),
69 RESAMPLE_FLAGS(PA_RESAMPLER_PRODUCE_LFE | PA_RESAMPLER_CONSUME_LFE | PA_RESAMPLER_NO_FILL_SINK),
70 { .str = NULL, .value = 0 },
71 };
72
73 unsigned i, j, k;
74 pa_mempool *pool;
75 unsigned crossover_freq = 120;
76
77 pa_log_set_level(PA_LOG_DEBUG);
78
79 pa_assert_se(pool = pa_mempool_new(PA_MEM_TYPE_PRIVATE, 0, true));
80
81 for (i = 0; maps[i].channels > 0; i++)
82 for (j = 0; maps[j].channels > 0; j++) {
83 char a[PA_CHANNEL_MAP_SNPRINT_MAX], b[PA_CHANNEL_MAP_SNPRINT_MAX];
84 pa_resampler *r;
85 pa_sample_spec ss1, ss2;
86
87 ss1.channels = maps[i].channels;
88 ss2.channels = maps[j].channels;
89
90 ss1.rate = ss2.rate = 44100;
91 ss1.format = ss2.format = PA_SAMPLE_S16NE;
92
93 for (k = 0; flag_sets[k].str; k++) {
94 pa_log_info("Converting from '%s' to '%s' with flags %s.", pa_channel_map_snprint(a, sizeof(a), &maps[i]),
95 pa_channel_map_snprint(b, sizeof(b), &maps[j]), flag_sets[k].str);
96
97 r = pa_resampler_new(pool, &ss1, &maps[i], &ss2, &maps[j], crossover_freq, PA_RESAMPLER_AUTO,
98 flag_sets[k].value);
99
100 /* We don't really care for the resampler. We just want to
101 * see the remixing debug output. */
102
103 pa_resampler_free(r);
104 }
105 }
106
107 pa_mempool_unref(pool);
108
109 return 0;
110 }
111