4 This file is part of polypaudio.
6 polypaudio 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 polypaudio 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 polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include "channelmap.h"
33 pa_channel_map
* pa_channel_map_init(pa_channel_map
*m
) {
39 for (c
= 0; c
< PA_CHANNELS_MAX
; c
++)
40 m
->map
[c
] = PA_CHANNEL_POSITION_INVALID
;
45 pa_channel_map
* pa_channel_map_init_mono(pa_channel_map
*m
) {
48 pa_channel_map_init(m
);
51 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
55 pa_channel_map
* pa_channel_map_init_stereo(pa_channel_map
*m
) {
58 pa_channel_map_init(m
);
61 m
->map
[0] = PA_CHANNEL_POSITION_LEFT
;
62 m
->map
[1] = PA_CHANNEL_POSITION_RIGHT
;
66 pa_channel_map
* pa_channel_map_init_auto(pa_channel_map
*m
, unsigned channels
) {
69 assert(channels
<= PA_CHANNELS_MAX
);
71 pa_channel_map_init(m
);
73 m
->channels
= channels
;
77 m
->map
[0] = PA_CHANNEL_POSITION_MONO
;
81 m
->map
[6] = PA_CHANNEL_POSITION_SIDE_LEFT
;
82 m
->map
[7] = PA_CHANNEL_POSITION_SIDE_RIGHT
;
86 m
->map
[5] = PA_CHANNEL_POSITION_LFE
;
90 m
->map
[4] = PA_CHANNEL_POSITION_FRONT_CENTER
;
94 m
->map
[2] = PA_CHANNEL_POSITION_REAR_LEFT
;
95 m
->map
[3] = PA_CHANNEL_POSITION_REAR_RIGHT
;
99 m
->map
[0] = PA_CHANNEL_POSITION_FRONT_LEFT
;
100 m
->map
[1] = PA_CHANNEL_POSITION_FRONT_RIGHT
;
108 const char* pa_channel_position_to_string(pa_channel_position_t pos
) {
110 const char *const table
[] = {
111 [PA_CHANNEL_POSITION_MONO
] = "mono",
113 [PA_CHANNEL_POSITION_FRONT_CENTER
] = "front-center",
114 [PA_CHANNEL_POSITION_FRONT_LEFT
] = "front-left",
115 [PA_CHANNEL_POSITION_FRONT_RIGHT
] = "front-right",
117 [PA_CHANNEL_POSITION_REAR_CENTER
] = "rear-center",
118 [PA_CHANNEL_POSITION_REAR_LEFT
] = "rear-left",
119 [PA_CHANNEL_POSITION_REAR_RIGHT
] = "rear-right",
121 [PA_CHANNEL_POSITION_LFE
] = "lfe",
123 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
] = "front-left-of-center",
124 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
] = "front-right-of-center",
126 [PA_CHANNEL_POSITION_SIDE_LEFT
] = "side-left",
127 [PA_CHANNEL_POSITION_SIDE_RIGHT
] = "side-right",
129 [PA_CHANNEL_POSITION_AUX1
] = "aux1",
130 [PA_CHANNEL_POSITION_AUX2
] = "aux2",
131 [PA_CHANNEL_POSITION_AUX3
] = "aux3",
132 [PA_CHANNEL_POSITION_AUX4
] = "aux4",
133 [PA_CHANNEL_POSITION_AUX5
] = "aux5",
134 [PA_CHANNEL_POSITION_AUX6
] = "aux6",
135 [PA_CHANNEL_POSITION_AUX7
] = "aux7",
136 [PA_CHANNEL_POSITION_AUX8
] = "aux8",
137 [PA_CHANNEL_POSITION_AUX9
] = "aux9",
138 [PA_CHANNEL_POSITION_AUX10
] = "aux10",
139 [PA_CHANNEL_POSITION_AUX11
] = "aux11",
140 [PA_CHANNEL_POSITION_AUX12
] = "aux12"
143 if (pos
< 0 || pos
>= PA_CHANNEL_POSITION_MAX
)
149 int pa_channel_map_equal(const pa_channel_map
*a
, const pa_channel_map
*b
) {
155 if (a
->channels
!= b
->channels
)
158 for (c
= 0; c
< a
->channels
; c
++)
159 if (a
->map
[c
] != b
->map
[c
])
165 char* pa_channel_map_snprint(char *s
, size_t l
, const pa_channel_map
*map
) {
176 for (channel
= 0; channel
< map
->channels
&& l
> 1; channel
++) {
177 l
-= snprintf(e
, l
, "%s%u:%s",
180 pa_channel_position_to_string(map
->map
[channel
]));
189 int pa_channel_map_valid(const pa_channel_map
*map
) {
194 if (map
->channels
<= 0 || map
->channels
> PA_CHANNELS_MAX
)
197 for (c
= 0; c
< map
->channels
; c
++)
198 if (map
->map
[c
] < 0 ||map
->map
[c
] >= PA_CHANNEL_POSITION_MAX
)