4 This file is part of PulseAudio.
6 Copyright 2005-2006 Lennart Poettering
7 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9 PulseAudio is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Lesser General Public License as published
11 by the Free Software Foundation; either version 2 of the License,
12 or (at your option) any later version.
14 PulseAudio is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with PulseAudio; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
34 #include <pulse/xmalloc.h>
35 #include <pulsecore/core-util.h>
37 #include "channelmap.h"
39 const char *const table[] = {
40 [PA_CHANNEL_POSITION_MONO] = "mono",
42 [PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center",
43 [PA_CHANNEL_POSITION_FRONT_LEFT] = "front-left",
44 [PA_CHANNEL_POSITION_FRONT_RIGHT] = "front-right",
46 [PA_CHANNEL_POSITION_REAR_CENTER] = "rear-center",
47 [PA_CHANNEL_POSITION_REAR_LEFT] = "rear-left",
48 [PA_CHANNEL_POSITION_REAR_RIGHT] = "rear-right",
50 [PA_CHANNEL_POSITION_LFE] = "lfe",
52 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = "front-left-of-center",
53 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = "front-right-of-center",
55 [PA_CHANNEL_POSITION_SIDE_LEFT] = "side-left",
56 [PA_CHANNEL_POSITION_SIDE_RIGHT] = "side-right",
58 [PA_CHANNEL_POSITION_AUX0] = "aux0",
59 [PA_CHANNEL_POSITION_AUX1] = "aux1",
60 [PA_CHANNEL_POSITION_AUX2] = "aux2",
61 [PA_CHANNEL_POSITION_AUX3] = "aux3",
62 [PA_CHANNEL_POSITION_AUX4] = "aux4",
63 [PA_CHANNEL_POSITION_AUX5] = "aux5",
64 [PA_CHANNEL_POSITION_AUX6] = "aux6",
65 [PA_CHANNEL_POSITION_AUX7] = "aux7",
66 [PA_CHANNEL_POSITION_AUX8] = "aux8",
67 [PA_CHANNEL_POSITION_AUX9] = "aux9",
68 [PA_CHANNEL_POSITION_AUX10] = "aux10",
69 [PA_CHANNEL_POSITION_AUX11] = "aux11",
70 [PA_CHANNEL_POSITION_AUX12] = "aux12",
71 [PA_CHANNEL_POSITION_AUX13] = "aux13",
72 [PA_CHANNEL_POSITION_AUX14] = "aux14",
73 [PA_CHANNEL_POSITION_AUX15] = "aux15",
74 [PA_CHANNEL_POSITION_AUX16] = "aux16",
75 [PA_CHANNEL_POSITION_AUX17] = "aux17",
76 [PA_CHANNEL_POSITION_AUX18] = "aux18",
77 [PA_CHANNEL_POSITION_AUX19] = "aux19",
78 [PA_CHANNEL_POSITION_AUX20] = "aux20",
79 [PA_CHANNEL_POSITION_AUX21] = "aux21",
80 [PA_CHANNEL_POSITION_AUX22] = "aux22",
81 [PA_CHANNEL_POSITION_AUX23] = "aux23",
82 [PA_CHANNEL_POSITION_AUX24] = "aux24",
83 [PA_CHANNEL_POSITION_AUX25] = "aux25",
84 [PA_CHANNEL_POSITION_AUX26] = "aux26",
85 [PA_CHANNEL_POSITION_AUX27] = "aux27",
86 [PA_CHANNEL_POSITION_AUX28] = "aux28",
87 [PA_CHANNEL_POSITION_AUX29] = "aux29",
88 [PA_CHANNEL_POSITION_AUX30] = "aux30",
89 [PA_CHANNEL_POSITION_AUX31] = "aux31",
91 [PA_CHANNEL_POSITION_TOP_CENTER] = "top-center",
93 [PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = "top-front-left",
94 [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = "top-front-right",
95 [PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = "top-front-center",
97 [PA_CHANNEL_POSITION_TOP_REAR_LEFT] = "top-rear-left",
98 [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = "top-rear-right",
99 [PA_CHANNEL_POSITION_TOP_REAR_CENTER] = "top-rear-center"
102 pa_channel_map* pa_channel_map_init(pa_channel_map *m) {
108 for (c = 0; c < PA_CHANNELS_MAX; c++)
109 m->map[c] = PA_CHANNEL_POSITION_INVALID;
114 pa_channel_map* pa_channel_map_init_mono(pa_channel_map *m) {
117 pa_channel_map_init(m);
120 m->map[0] = PA_CHANNEL_POSITION_MONO;
124 pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m) {
127 pa_channel_map_init(m);
130 m->map[0] = PA_CHANNEL_POSITION_LEFT;
131 m->map[1] = PA_CHANNEL_POSITION_RIGHT;
135 pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def) {
137 assert(channels > 0);
138 assert(channels <= PA_CHANNELS_MAX);
140 pa_channel_map_init(m);
142 m->channels = channels;
145 case PA_CHANNEL_MAP_AIFF:
147 /* This is somewhat compatible with RFC3551 */
151 m->map[0] = PA_CHANNEL_POSITION_MONO;
155 m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
156 m->map[1] = PA_CHANNEL_POSITION_SIDE_LEFT;
157 m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER;
158 m->map[3] = PA_CHANNEL_POSITION_FRONT_RIGHT;
159 m->map[4] = PA_CHANNEL_POSITION_SIDE_RIGHT;
160 m->map[5] = PA_CHANNEL_POSITION_LFE;
164 m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER;
165 m->map[3] = PA_CHANNEL_POSITION_REAR_LEFT;
166 m->map[4] = PA_CHANNEL_POSITION_REAR_RIGHT;
170 m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
171 m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
175 m->map[0] = PA_CHANNEL_POSITION_LEFT;
176 m->map[1] = PA_CHANNEL_POSITION_RIGHT;
177 m->map[2] = PA_CHANNEL_POSITION_CENTER;
181 m->map[0] = PA_CHANNEL_POSITION_LEFT;
182 m->map[1] = PA_CHANNEL_POSITION_CENTER;
183 m->map[2] = PA_CHANNEL_POSITION_RIGHT;
184 m->map[3] = PA_CHANNEL_POSITION_LFE;
191 case PA_CHANNEL_MAP_ALSA:
195 m->map[0] = PA_CHANNEL_POSITION_MONO;
199 m->map[6] = PA_CHANNEL_POSITION_SIDE_LEFT;
200 m->map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT;
204 m->map[5] = PA_CHANNEL_POSITION_LFE;
208 m->map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
212 m->map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
213 m->map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
217 m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
218 m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
225 case PA_CHANNEL_MAP_AUX: {
228 if (channels >= PA_CHANNELS_MAX)
231 for (i = 0; i < channels; i++)
232 m->map[i] = PA_CHANNEL_POSITION_AUX0 + i;
237 case PA_CHANNEL_MAP_WAVEEX:
241 m->map[0] = PA_CHANNEL_POSITION_MONO;
245 m->map[15] = PA_CHANNEL_POSITION_TOP_REAR_LEFT;
246 m->map[16] = PA_CHANNEL_POSITION_TOP_REAR_CENTER;
247 m->map[17] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT;
251 m->map[12] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT;
252 m->map[13] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER;
253 m->map[14] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT;
257 m->map[11] = PA_CHANNEL_POSITION_TOP_CENTER;
261 m->map[9] = PA_CHANNEL_POSITION_SIDE_LEFT;
262 m->map[10] = PA_CHANNEL_POSITION_SIDE_RIGHT;
266 m->map[8] = PA_CHANNEL_POSITION_REAR_CENTER;
270 m->map[6] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
271 m->map[7] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
275 m->map[4] = PA_CHANNEL_POSITION_REAR_LEFT;
276 m->map[5] = PA_CHANNEL_POSITION_REAR_RIGHT;
280 m->map[3] = PA_CHANNEL_POSITION_LFE;
284 m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER;
288 m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
289 m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
296 case PA_CHANNEL_MAP_OSS:
300 m->map[0] = PA_CHANNEL_POSITION_MONO;
304 m->map[6] = PA_CHANNEL_POSITION_REAR_LEFT;
305 m->map[7] = PA_CHANNEL_POSITION_REAR_RIGHT;
309 m->map[4] = PA_CHANNEL_POSITION_SIDE_LEFT;
310 m->map[5] = PA_CHANNEL_POSITION_SIDE_RIGHT;
314 m->map[3] = PA_CHANNEL_POSITION_LFE;
318 m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER;
322 m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
323 m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
337 const char* pa_channel_position_to_string(pa_channel_position_t pos) {
339 if (pos < 0 || pos >= PA_CHANNEL_POSITION_MAX)
345 int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) {
351 if (a->channels != b->channels)
354 for (c = 0; c < a->channels; c++)
355 if (a->map[c] != b->map[c])
361 char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
372 for (channel = 0; channel < map->channels && l > 1; channel++) {
373 l -= snprintf(e, l, "%s%s",
375 pa_channel_position_to_string(map->map[channel]));
384 pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s) {
392 memset(&map, 0, sizeof(map));
394 if (strcmp(s, "stereo") == 0) {
396 map.map[0] = PA_CHANNEL_POSITION_LEFT;
397 map.map[1] = PA_CHANNEL_POSITION_RIGHT;
404 while ((p = pa_split(s, ",", &state))) {
406 if (map.channels >= PA_CHANNELS_MAX) {
411 /* Some special aliases */
412 if (strcmp(p, "left") == 0)
413 map.map[map.channels++] = PA_CHANNEL_POSITION_LEFT;
414 else if (strcmp(p, "right") == 0)
415 map.map[map.channels++] = PA_CHANNEL_POSITION_RIGHT;
416 else if (strcmp(p, "center") == 0)
417 map.map[map.channels++] = PA_CHANNEL_POSITION_CENTER;
418 else if (strcmp(p, "subwoofer") == 0)
419 map.map[map.channels++] = PA_CHANNEL_POSITION_SUBWOOFER;
421 pa_channel_position_t i;
423 for (i = 0; i < PA_CHANNEL_POSITION_MAX; i++)
424 if (strcmp(p, table[i]) == 0) {
425 map.map[map.channels++] = i;
429 if (i >= PA_CHANNEL_POSITION_MAX) {
440 if (!pa_channel_map_valid(&map))
447 int pa_channel_map_valid(const pa_channel_map *map) {
452 if (map->channels <= 0 || map->channels > PA_CHANNELS_MAX)
455 for (c = 0; c < map->channels; c++) {
457 if (map->map[c] < 0 ||map->map[c] >= PA_CHANNEL_POSITION_MAX)