2 This file is part of PulseAudio.
4 Copyright 2005-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <pulse/xmalloc.h>
32 #include <pulse/i18n.h>
33 #include <pulsecore/core-util.h>
34 #include <pulsecore/macro.h>
35 #include <pulsecore/bitset.h>
37 #include "channelmap.h"
39 const char *const table
[PA_CHANNEL_POSITION_MAX
] = {
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_CENTER
] = "top-front-center",
94 [PA_CHANNEL_POSITION_TOP_FRONT_LEFT
] = "top-front-left",
95 [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
] = "top-front-right",
97 [PA_CHANNEL_POSITION_TOP_REAR_CENTER
] = "top-rear-center",
98 [PA_CHANNEL_POSITION_TOP_REAR_LEFT
] = "top-rear-left",
99 [PA_CHANNEL_POSITION_TOP_REAR_RIGHT
] = "top-rear-right"
102 const char *const pretty_table
[PA_CHANNEL_POSITION_MAX
] = {
103 [PA_CHANNEL_POSITION_MONO
] = N_("Mono"),
105 [PA_CHANNEL_POSITION_FRONT_CENTER
] = N_("Front Center"),
106 [PA_CHANNEL_POSITION_FRONT_LEFT
] = N_("Front Left"),
107 [PA_CHANNEL_POSITION_FRONT_RIGHT
] = N_("Front Right"),
109 [PA_CHANNEL_POSITION_REAR_CENTER
] = N_("Rear Center"),
110 [PA_CHANNEL_POSITION_REAR_LEFT
] = N_("Rear Left"),
111 [PA_CHANNEL_POSITION_REAR_RIGHT
] = N_("Rear Right"),
113 [PA_CHANNEL_POSITION_LFE
] = N_("Low Frequency Emmiter"),
115 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
] = N_("Front Left-of-center"),
116 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
] = N_("Front Right-of-center"),
118 [PA_CHANNEL_POSITION_SIDE_LEFT
] = N_("Side Left"),
119 [PA_CHANNEL_POSITION_SIDE_RIGHT
] = N_("Side Right"),
121 [PA_CHANNEL_POSITION_AUX0
] = N_("Auxiliary 0"),
122 [PA_CHANNEL_POSITION_AUX1
] = N_("Auxiliary 1"),
123 [PA_CHANNEL_POSITION_AUX2
] = N_("Auxiliary 2"),
124 [PA_CHANNEL_POSITION_AUX3
] = N_("Auxiliary 3"),
125 [PA_CHANNEL_POSITION_AUX4
] = N_("Auxiliary 4"),
126 [PA_CHANNEL_POSITION_AUX5
] = N_("Auxiliary 5"),
127 [PA_CHANNEL_POSITION_AUX6
] = N_("Auxiliary 6"),
128 [PA_CHANNEL_POSITION_AUX7
] = N_("Auxiliary 7"),
129 [PA_CHANNEL_POSITION_AUX8
] = N_("Auxiliary 8"),
130 [PA_CHANNEL_POSITION_AUX9
] = N_("Auxiliary 9"),
131 [PA_CHANNEL_POSITION_AUX10
] = N_("Auxiliary 10"),
132 [PA_CHANNEL_POSITION_AUX11
] = N_("Auxiliary 11"),
133 [PA_CHANNEL_POSITION_AUX12
] = N_("Auxiliary 12"),
134 [PA_CHANNEL_POSITION_AUX13
] = N_("Auxiliary 13"),
135 [PA_CHANNEL_POSITION_AUX14
] = N_("Auxiliary 14"),
136 [PA_CHANNEL_POSITION_AUX15
] = N_("Auxiliary 15"),
137 [PA_CHANNEL_POSITION_AUX16
] = N_("Auxiliary 16"),
138 [PA_CHANNEL_POSITION_AUX17
] = N_("Auxiliary 17"),
139 [PA_CHANNEL_POSITION_AUX18
] = N_("Auxiliary 18"),
140 [PA_CHANNEL_POSITION_AUX19
] = N_("Auxiliary 19"),
141 [PA_CHANNEL_POSITION_AUX20
] = N_("Auxiliary 20"),
142 [PA_CHANNEL_POSITION_AUX21
] = N_("Auxiliary 21"),
143 [PA_CHANNEL_POSITION_AUX22
] = N_("Auxiliary 22"),
144 [PA_CHANNEL_POSITION_AUX23
] = N_("Auxiliary 23"),
145 [PA_CHANNEL_POSITION_AUX24
] = N_("Auxiliary 24"),
146 [PA_CHANNEL_POSITION_AUX25
] = N_("Auxiliary 25"),
147 [PA_CHANNEL_POSITION_AUX26
] = N_("Auxiliary 26"),
148 [PA_CHANNEL_POSITION_AUX27
] = N_("Auxiliary 27"),
149 [PA_CHANNEL_POSITION_AUX28
] = N_("Auxiliary 28"),
150 [PA_CHANNEL_POSITION_AUX29
] = N_("Auxiliary 29"),
151 [PA_CHANNEL_POSITION_AUX30
] = N_("Auxiliary 30"),
152 [PA_CHANNEL_POSITION_AUX31
] = N_("Auxiliary 31"),
154 [PA_CHANNEL_POSITION_TOP_CENTER
] = N_("Top Center"),
156 [PA_CHANNEL_POSITION_TOP_FRONT_CENTER
] = N_("Top Front Center"),
157 [PA_CHANNEL_POSITION_TOP_FRONT_LEFT
] = N_("Top Front Left"),
158 [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
] = N_("Top Front Right"),
160 [PA_CHANNEL_POSITION_TOP_REAR_CENTER
] = N_("Top Rear Center"),
161 [PA_CHANNEL_POSITION_TOP_REAR_LEFT
] = N_("Top Rear Left"),
162 [PA_CHANNEL_POSITION_TOP_REAR_RIGHT
] = N_("Top Rear Right")
165 pa_channel_map
* pa_channel_map_init(pa_channel_map
*m
) {
171 for (c
= 0; c
< PA_CHANNELS_MAX
; c
++)
172 m
->map
[c
] = PA_CHANNEL_POSITION_INVALID
;
177 pa_channel_map
* pa_channel_map_init_mono(pa_channel_map
*m
) {
180 pa_channel_map_init(m
);
183 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
187 pa_channel_map
* pa_channel_map_init_stereo(pa_channel_map
*m
) {
190 pa_channel_map_init(m
);
193 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
194 m
->map
[1] = PA_CHANNEL_POSITION_RIGHT
;
198 pa_channel_map
* pa_channel_map_init_auto(pa_channel_map
*m
, unsigned channels
, pa_channel_map_def_t def
) {
200 pa_assert(channels
> 0);
201 pa_assert(channels
<= PA_CHANNELS_MAX
);
202 pa_assert(def
< PA_CHANNEL_MAP_DEF_MAX
);
204 pa_channel_map_init(m
);
206 m
->channels
= (uint8_t) channels
;
209 case PA_CHANNEL_MAP_AIFF
:
211 /* This is somewhat compatible with RFC3551 */
215 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
219 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
220 m
->map
[1] = PA_CHANNEL_POSITION_SIDE_LEFT
;
221 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
222 m
->map
[3] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
223 m
->map
[4] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
224 m
->map
[5] = PA_CHANNEL_POSITION_LFE
;
228 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
229 m
->map
[3] = PA_CHANNEL_POSITION_REAR_LEFT
;
230 m
->map
[4] = PA_CHANNEL_POSITION_REAR_RIGHT
;
234 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
235 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
239 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
240 m
->map
[1] = PA_CHANNEL_POSITION_RIGHT
;
241 m
->map
[2] = PA_CHANNEL_POSITION_CENTER
;
245 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
246 m
->map
[1] = PA_CHANNEL_POSITION_CENTER
;
247 m
->map
[2] = PA_CHANNEL_POSITION_RIGHT
;
248 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
255 case PA_CHANNEL_MAP_ALSA
:
259 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
263 m
->map
[6] = PA_CHANNEL_POSITION_SIDE_LEFT
;
264 m
->map
[7] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
268 m
->map
[5] = PA_CHANNEL_POSITION_LFE
;
272 m
->map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
276 m
->map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
277 m
->map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
281 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
282 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
289 case PA_CHANNEL_MAP_AUX
: {
292 for (i
= 0; i
< channels
; i
++)
293 m
->map
[i
] = PA_CHANNEL_POSITION_AUX0
+ i
;
298 case PA_CHANNEL_MAP_WAVEEX
:
302 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
306 m
->map
[15] = PA_CHANNEL_POSITION_TOP_REAR_LEFT
;
307 m
->map
[16] = PA_CHANNEL_POSITION_TOP_REAR_CENTER
;
308 m
->map
[17] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT
;
312 m
->map
[12] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT
;
313 m
->map
[13] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER
;
314 m
->map
[14] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
;
318 m
->map
[11] = PA_CHANNEL_POSITION_TOP_CENTER
;
322 m
->map
[9] = PA_CHANNEL_POSITION_SIDE_LEFT
;
323 m
->map
[10] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
327 m
->map
[8] = PA_CHANNEL_POSITION_REAR_CENTER
;
331 m
->map
[6] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
;
332 m
->map
[7] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
;
336 m
->map
[4] = PA_CHANNEL_POSITION_REAR_LEFT
;
337 m
->map
[5] = PA_CHANNEL_POSITION_REAR_RIGHT
;
341 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
345 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
349 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
350 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
357 case PA_CHANNEL_MAP_OSS
:
361 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
365 m
->map
[6] = PA_CHANNEL_POSITION_REAR_LEFT
;
366 m
->map
[7] = PA_CHANNEL_POSITION_REAR_RIGHT
;
370 m
->map
[4] = PA_CHANNEL_POSITION_SIDE_LEFT
;
371 m
->map
[5] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
375 m
->map
[3] = PA_CHANNEL_POSITION_LFE
;
379 m
->map
[2] = PA_CHANNEL_POSITION_FRONT_CENTER
;
383 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
384 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
393 pa_assert_not_reached();
397 pa_channel_map
* pa_channel_map_init_extend(pa_channel_map
*m
, unsigned channels
, pa_channel_map_def_t def
) {
401 pa_assert(channels
> 0);
402 pa_assert(channels
<= PA_CHANNELS_MAX
);
403 pa_assert(def
< PA_CHANNEL_MAP_DEF_MAX
);
405 pa_channel_map_init(m
);
407 for (c
= channels
; c
> 0; c
--) {
409 if (pa_channel_map_init_auto(m
, c
, def
)) {
412 for (; c
< channels
; c
++) {
414 m
->map
[c
] = PA_CHANNEL_POSITION_AUX0
+ i
;
418 m
->channels
= (uint8_t) channels
;
427 const char* pa_channel_position_to_string(pa_channel_position_t pos
) {
429 if (pos
< 0 || pos
>= PA_CHANNEL_POSITION_MAX
)
435 const char* pa_channel_position_to_pretty_string(pa_channel_position_t pos
) {
437 if (pos
< 0 || pos
>= PA_CHANNEL_POSITION_MAX
)
442 return _(pretty_table
[pos
]);
445 int pa_channel_map_equal(const pa_channel_map
*a
, const pa_channel_map
*b
) {
451 pa_return_val_if_fail(pa_channel_map_valid(a
), 0);
452 pa_return_val_if_fail(pa_channel_map_valid(b
), 0);
454 if (a
->channels
!= b
->channels
)
457 for (c
= 0; c
< a
->channels
; c
++)
458 if (a
->map
[c
] != b
->map
[c
])
464 char* pa_channel_map_snprint(char *s
, size_t l
, const pa_channel_map
*map
) {
466 pa_bool_t first
= TRUE
;
475 if (!pa_channel_map_valid(map
)) {
476 pa_snprintf(s
, l
, _("(invalid)"));
482 for (channel
= 0; channel
< map
->channels
&& l
> 1; channel
++) {
483 l
-= pa_snprintf(e
, l
, "%s%s",
485 pa_channel_position_to_string(map
->map
[channel
]));
494 pa_channel_map
*pa_channel_map_parse(pa_channel_map
*rmap
, const char *s
) {
502 pa_channel_map_init(&map
);
504 /* We don't need to match against the well known channel mapping
505 * "mono" here explicitly, because that can be understood as
506 * listing with one channel called "mono". */
508 if (pa_streq(s
, "stereo")) {
510 map
.map
[0] = PA_CHANNEL_POSITION_LEFT
;
511 map
.map
[1] = PA_CHANNEL_POSITION_RIGHT
;
513 } else if (pa_streq(s
, "surround-40")) {
515 map
.map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
516 map
.map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
517 map
.map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
518 map
.map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
520 } else if (pa_streq(s
, "surround-41")) {
522 map
.map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
523 map
.map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
524 map
.map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
525 map
.map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
526 map
.map
[4] = PA_CHANNEL_POSITION_LFE
;
528 } else if (pa_streq(s
, "surround-50")) {
530 map
.map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
531 map
.map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
532 map
.map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
533 map
.map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
534 map
.map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
536 } else if (pa_streq(s
, "surround-51")) {
538 map
.map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
539 map
.map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
540 map
.map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
541 map
.map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
542 map
.map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
543 map
.map
[5] = PA_CHANNEL_POSITION_LFE
;
545 } else if (pa_streq(s
, "surround-71")) {
547 map
.map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
548 map
.map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
549 map
.map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
550 map
.map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
551 map
.map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
552 map
.map
[5] = PA_CHANNEL_POSITION_LFE
;
553 map
.map
[6] = PA_CHANNEL_POSITION_SIDE_LEFT
;
554 map
.map
[7] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
561 while ((p
= pa_split(s
, ",", &state
))) {
563 if (map
.channels
>= PA_CHANNELS_MAX
) {
568 /* Some special aliases */
569 if (pa_streq(p
, "left"))
570 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_LEFT
;
571 else if (pa_streq(p
, "right"))
572 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_RIGHT
;
573 else if (pa_streq(p
, "center"))
574 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_CENTER
;
575 else if (pa_streq(p
, "subwoofer"))
576 map
.map
[map
.channels
++] = PA_CHANNEL_POSITION_SUBWOOFER
;
578 pa_channel_position_t i
;
580 for (i
= 0; i
< PA_CHANNEL_POSITION_MAX
; i
++)
581 if (strcmp(p
, table
[i
]) == 0) {
582 map
.map
[map
.channels
++] = i
;
586 if (i
>= PA_CHANNEL_POSITION_MAX
) {
597 if (!pa_channel_map_valid(&map
))
604 int pa_channel_map_valid(const pa_channel_map
*map
) {
609 if (map
->channels
<= 0 || map
->channels
> PA_CHANNELS_MAX
)
612 for (c
= 0; c
< map
->channels
; c
++)
613 if (map
->map
[c
] < 0 || map
->map
[c
] >= PA_CHANNEL_POSITION_MAX
)
619 int pa_channel_map_compatible(const pa_channel_map
*map
, const pa_sample_spec
*ss
) {
623 pa_return_val_if_fail(pa_channel_map_valid(map
), 0);
624 pa_return_val_if_fail(pa_sample_spec_valid(ss
), 0);
626 return map
->channels
== ss
->channels
;
629 int pa_channel_map_superset(const pa_channel_map
*a
, const pa_channel_map
*b
) {
630 pa_bitset_t in_a
[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX
)];
636 pa_return_val_if_fail(pa_channel_map_valid(a
), 0);
637 pa_return_val_if_fail(pa_channel_map_valid(b
), 0);
639 memset(in_a
, 0, sizeof(in_a
));
641 for (i
= 0; i
< a
->channels
; i
++)
642 pa_bitset_set(in_a
, a
->map
[i
], TRUE
);
644 for (i
= 0; i
< b
->channels
; i
++)
645 if (!pa_bitset_get(in_a
, b
->map
[i
]))
651 int pa_channel_map_can_balance(const pa_channel_map
*map
) {
653 pa_bool_t left
= FALSE
, right
= FALSE
;
657 pa_return_val_if_fail(pa_channel_map_valid(map
), 0);
659 for (c
= 0; c
< map
->channels
; c
++) {
661 switch (map
->map
[c
]) {
662 case PA_CHANNEL_POSITION_LEFT
:
663 case PA_CHANNEL_POSITION_REAR_LEFT
:
664 case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
:
665 case PA_CHANNEL_POSITION_SIDE_LEFT
:
666 case PA_CHANNEL_POSITION_TOP_FRONT_LEFT
:
667 case PA_CHANNEL_POSITION_TOP_REAR_LEFT
:
671 case PA_CHANNEL_POSITION_RIGHT
:
672 case PA_CHANNEL_POSITION_REAR_RIGHT
:
673 case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
:
674 case PA_CHANNEL_POSITION_SIDE_RIGHT
:
675 case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
:
676 case PA_CHANNEL_POSITION_TOP_REAR_RIGHT
:
691 int pa_channel_map_can_fade(const pa_channel_map
*map
) {
693 pa_bool_t front
= FALSE
, rear
= FALSE
;
697 pa_return_val_if_fail(pa_channel_map_valid(map
), 0);
699 for (c
= 0; c
< map
->channels
; c
++) {
701 switch (map
->map
[c
]) {
702 case PA_CHANNEL_POSITION_FRONT_LEFT
:
703 case PA_CHANNEL_POSITION_FRONT_RIGHT
:
704 case PA_CHANNEL_POSITION_FRONT_CENTER
:
705 case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
:
706 case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
:
707 case PA_CHANNEL_POSITION_TOP_FRONT_LEFT
:
708 case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
:
709 case PA_CHANNEL_POSITION_TOP_FRONT_CENTER
:
713 case PA_CHANNEL_POSITION_REAR_LEFT
:
714 case PA_CHANNEL_POSITION_REAR_RIGHT
:
715 case PA_CHANNEL_POSITION_REAR_CENTER
:
716 case PA_CHANNEL_POSITION_TOP_REAR_LEFT
:
717 case PA_CHANNEL_POSITION_TOP_REAR_RIGHT
:
718 case PA_CHANNEL_POSITION_TOP_REAR_CENTER
:
733 const char* pa_channel_map_to_name(const pa_channel_map
*map
) {
734 pa_bitset_t in_map
[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX
)];
739 pa_return_val_if_fail(pa_channel_map_valid(map
), NULL
);
741 memset(in_map
, 0, sizeof(in_map
));
743 for (c
= 0; c
< map
->channels
; c
++)
744 pa_bitset_set(in_map
, map
->map
[c
], TRUE
);
746 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
747 PA_CHANNEL_POSITION_MONO
, -1))
750 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
751 PA_CHANNEL_POSITION_LEFT
, PA_CHANNEL_POSITION_RIGHT
, -1))
754 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
755 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
756 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
, -1))
757 return "surround-40";
759 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
760 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
761 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
762 PA_CHANNEL_POSITION_LFE
, -1))
763 return "surround-41";
765 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
766 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
767 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
768 PA_CHANNEL_POSITION_FRONT_CENTER
, -1))
769 return "surround-50";
771 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
772 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
773 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
774 PA_CHANNEL_POSITION_FRONT_CENTER
, PA_CHANNEL_POSITION_LFE
, -1))
775 return "surround-51";
777 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
778 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
779 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
780 PA_CHANNEL_POSITION_FRONT_CENTER
, PA_CHANNEL_POSITION_LFE
,
781 PA_CHANNEL_POSITION_SIDE_LEFT
, PA_CHANNEL_POSITION_SIDE_RIGHT
, -1))
782 return "surround-71";
787 const char* pa_channel_map_to_pretty_name(const pa_channel_map
*map
) {
788 pa_bitset_t in_map
[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX
)];
793 pa_return_val_if_fail(pa_channel_map_valid(map
), NULL
);
795 memset(in_map
, 0, sizeof(in_map
));
797 for (c
= 0; c
< map
->channels
; c
++)
798 pa_bitset_set(in_map
, map
->map
[c
], TRUE
);
802 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
803 PA_CHANNEL_POSITION_MONO
, -1))
806 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
807 PA_CHANNEL_POSITION_LEFT
, PA_CHANNEL_POSITION_RIGHT
, -1))
810 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
811 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
812 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
, -1))
813 return _("Surround 4.0");
815 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
816 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
817 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
818 PA_CHANNEL_POSITION_LFE
, -1))
819 return _("Surround 4.1");
821 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
822 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
823 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
824 PA_CHANNEL_POSITION_FRONT_CENTER
, -1))
825 return _("Surround 5.0");
827 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
828 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
829 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
830 PA_CHANNEL_POSITION_FRONT_CENTER
, PA_CHANNEL_POSITION_LFE
, -1))
831 return _("Surround 5.1");
833 if (pa_bitset_equals(in_map
, PA_CHANNEL_POSITION_MAX
,
834 PA_CHANNEL_POSITION_FRONT_LEFT
, PA_CHANNEL_POSITION_FRONT_RIGHT
,
835 PA_CHANNEL_POSITION_REAR_LEFT
, PA_CHANNEL_POSITION_REAR_RIGHT
,
836 PA_CHANNEL_POSITION_FRONT_CENTER
, PA_CHANNEL_POSITION_LFE
,
837 PA_CHANNEL_POSITION_SIDE_LEFT
, PA_CHANNEL_POSITION_SIDE_RIGHT
, -1))
838 return _("Surround 7.1");