4 This file is part of PulseAudio.
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <pulse/xmalloc.h>
32 #include <pulsecore/core-util.h>
34 #include "channelmap.h"
36 const char *const table
[] = {
37 [PA_CHANNEL_POSITION_MONO
] = "mono",
39 [PA_CHANNEL_POSITION_FRONT_CENTER
] = "front-center",
40 [PA_CHANNEL_POSITION_FRONT_LEFT
] = "front-left",
41 [PA_CHANNEL_POSITION_FRONT_RIGHT
] = "front-right",
43 [PA_CHANNEL_POSITION_REAR_CENTER
] = "rear-center",
44 [PA_CHANNEL_POSITION_REAR_LEFT
] = "rear-left",
45 [PA_CHANNEL_POSITION_REAR_RIGHT
] = "rear-right",
47 [PA_CHANNEL_POSITION_LFE
] = "lfe",
49 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
] = "front-left-of-center",
50 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
] = "front-right-of-center",
52 [PA_CHANNEL_POSITION_SIDE_LEFT
] = "side-left",
53 [PA_CHANNEL_POSITION_SIDE_RIGHT
] = "side-right",
55 [PA_CHANNEL_POSITION_AUX0
] = "aux0",
56 [PA_CHANNEL_POSITION_AUX1
] = "aux1",
57 [PA_CHANNEL_POSITION_AUX2
] = "aux2",
58 [PA_CHANNEL_POSITION_AUX3
] = "aux3",
59 [PA_CHANNEL_POSITION_AUX4
] = "aux4",
60 [PA_CHANNEL_POSITION_AUX5
] = "aux5",
61 [PA_CHANNEL_POSITION_AUX6
] = "aux6",
62 [PA_CHANNEL_POSITION_AUX7
] = "aux7",
63 [PA_CHANNEL_POSITION_AUX8
] = "aux8",
64 [PA_CHANNEL_POSITION_AUX9
] = "aux9",
65 [PA_CHANNEL_POSITION_AUX10
] = "aux10",
66 [PA_CHANNEL_POSITION_AUX11
] = "aux11",
67 [PA_CHANNEL_POSITION_AUX12
] = "aux12",
68 [PA_CHANNEL_POSITION_AUX13
] = "aux13",
69 [PA_CHANNEL_POSITION_AUX14
] = "aux14",
70 [PA_CHANNEL_POSITION_AUX15
] = "aux15",
72 [PA_CHANNEL_POSITION_TOP_CENTER
] = "top-center",
74 [PA_CHANNEL_POSITION_TOP_FRONT_LEFT
] = "top-front-left",
75 [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
] = "top-front-right",
76 [PA_CHANNEL_POSITION_TOP_FRONT_CENTER
] = "top-front-center",
78 [PA_CHANNEL_POSITION_TOP_REAR_LEFT
] = "top-rear-left",
79 [PA_CHANNEL_POSITION_TOP_REAR_RIGHT
] = "top-rear-right",
80 [PA_CHANNEL_POSITION_TOP_REAR_CENTER
] = "top-rear-center"
83 pa_channel_map
* pa_channel_map_init(pa_channel_map
*m
) {
89 for (c
= 0; c
< PA_CHANNELS_MAX
; c
++)
90 m
->map
[c
] = PA_CHANNEL_POSITION_INVALID
;
95 pa_channel_map
* pa_channel_map_init_mono(pa_channel_map
*m
) {
98 pa_channel_map_init(m
);
101 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
105 pa_channel_map
* pa_channel_map_init_stereo(pa_channel_map
*m
) {
108 pa_channel_map_init(m
);
111 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
112 m
->map
[1] = PA_CHANNEL_POSITION_RIGHT
;
116 pa_channel_map
* pa_channel_map_init_auto(pa_channel_map
*m
, unsigned channels
, pa_channel_map_def_t def
) {
118 assert(channels
> 0);
119 assert(channels
<= PA_CHANNELS_MAX
);
121 pa_channel_map_init(m
);
123 m
->channels
= channels
;
126 case PA_CHANNEL_MAP_AIFF
:
128 /* This is somewhat compatible with RFC3551 */
132 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
136 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
137 m
->map
[1] = PA_CHANNEL_POSITION_SIDE_LEFT
;
138 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
139 m
->map
[3] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
140 m
->map
[4] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
141 m
->map
[5] = PA_CHANNEL_POSITION_LFE
;
145 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
146 m
->map
[3] = PA_CHANNEL_POSITION_REAR_LEFT
;
147 m
->map
[4] = PA_CHANNEL_POSITION_REAR_RIGHT
;
151 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
152 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
156 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
157 m
->map
[1] = PA_CHANNEL_POSITION_RIGHT
;
158 m
->map
[2] = PA_CHANNEL_POSITION_CENTER
;
162 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
163 m
->map
[1] = PA_CHANNEL_POSITION_CENTER
;
164 m
->map
[2] = PA_CHANNEL_POSITION_RIGHT
;
165 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
172 case PA_CHANNEL_MAP_ALSA
:
176 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
180 m
->map
[6] = PA_CHANNEL_POSITION_SIDE_LEFT
;
181 m
->map
[7] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
185 m
->map
[5] = PA_CHANNEL_POSITION_LFE
;
189 m
->map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
193 m
->map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
194 m
->map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
198 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
199 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
206 case PA_CHANNEL_MAP_AUX
: {
209 if (channels
>= PA_CHANNELS_MAX
)
212 for (i
= 0; i
< channels
; i
++)
213 m
->map
[i
] = PA_CHANNEL_POSITION_AUX0
+ i
;
218 case PA_CHANNEL_MAP_WAVEEX
:
222 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
226 m
->map
[15] = PA_CHANNEL_POSITION_TOP_REAR_LEFT
;
227 m
->map
[16] = PA_CHANNEL_POSITION_TOP_REAR_CENTER
;
228 m
->map
[17] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT
;
232 m
->map
[12] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT
;
233 m
->map
[13] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER
;
234 m
->map
[14] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
;
238 m
->map
[11] = PA_CHANNEL_POSITION_TOP_CENTER
;
242 m
->map
[9] = PA_CHANNEL_POSITION_SIDE_LEFT
;
243 m
->map
[10] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
247 m
->map
[8] = PA_CHANNEL_POSITION_REAR_CENTER
;
251 m
->map
[6] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
;
252 m
->map
[7] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
;
256 m
->map
[4] = PA_CHANNEL_POSITION_REAR_LEFT
;
257 m
->map
[5] = PA_CHANNEL_POSITION_REAR_RIGHT
;
261 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
265 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
269 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
270 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
277 case PA_CHANNEL_MAP_OSS
:
281 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
285 m
->map
[6] = PA_CHANNEL_POSITION_REAR_LEFT
;
286 m
->map
[7] = PA_CHANNEL_POSITION_REAR_RIGHT
;
290 m
->map
[4] = PA_CHANNEL_POSITION_SIDE_LEFT
;
291 m
->map
[5] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
295 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
299 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
303 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
304 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
318 const char* pa_channel_position_to_string(pa_channel_position_t pos
) {
320 if (pos
< 0 || pos
>= PA_CHANNEL_POSITION_MAX
)
326 int pa_channel_map_equal(const pa_channel_map
*a
, const pa_channel_map
*b
) {
332 if (a
->channels
!= b
->channels
)
335 for (c
= 0; c
< a
->channels
; c
++)
336 if (a
->map
[c
] != b
->map
[c
])
342 char* pa_channel_map_snprint(char *s
, size_t l
, const pa_channel_map
*map
) {
353 for (channel
= 0; channel
< map
->channels
&& l
> 1; channel
++) {
354 l
-= snprintf(e
, l
, "%s%s",
356 pa_channel_position_to_string(map
->map
[channel
]));
365 pa_channel_map
*pa_channel_map_parse(pa_channel_map
*rmap
, const char *s
) {
373 memset(&map
, 0, sizeof(map
));
375 if (strcmp(s
, "stereo") == 0) {
377 map
.map
[0] = PA_CHANNEL_POSITION_LEFT
;
378 map
.map
[1] = PA_CHANNEL_POSITION_RIGHT
;
385 while ((p
= pa_split(s
, ",", &state
))) {
387 if (map
.channels
>= PA_CHANNELS_MAX
) {
392 /* Some special aliases */
393 if (strcmp(p
, "left") == 0)
394 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_LEFT
;
395 else if (strcmp(p
, "right") == 0)
396 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_RIGHT
;
397 else if (strcmp(p
, "center") == 0)
398 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_CENTER
;
399 else if (strcmp(p
, "subwoofer") == 0)
400 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_SUBWOOFER
;
402 pa_channel_position_t i
;
404 for (i
= 0; i
< PA_CHANNEL_POSITION_MAX
; i
++)
405 if (strcmp(p
, table
[i
]) == 0) {
406 map
.map
[map
.channels
++] = i
;
410 if (i
>= PA_CHANNEL_POSITION_MAX
) {
421 if (!pa_channel_map_valid(&map
))
428 int pa_channel_map_valid(const pa_channel_map
*map
) {
433 if (map
->channels
<= 0 || map
->channels
> PA_CHANNELS_MAX
)
436 for (c
= 0; c
< map
->channels
; c
++) {
438 if (map
->map
[c
] < 0 ||map
->map
[c
] >= PA_CHANNEL_POSITION_MAX
)