code.delx.au - pulseaudio/blob - polyp/channelmap.h

   1 #ifndef foochannelmaphfoo
   2 #define foochannelmaphfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of polypaudio.
   8
   9   polypaudio 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.
  13
  14   polypaudio 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.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with polypaudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <polyp/sample.h>
  26 #include <polyp/cdecl.h>
  27
  28 /** \file
  29  * Constants and routines for channel mapping handling */
  30
  31 PA_C_DECL_BEGIN
  32
  33 typedef enum {
  34     PA_CHANNEL_POSITION_INVALID = -1,
  35     PA_CHANNEL_POSITION_MONO = 0,
  36
  37     PA_CHANNEL_POSITION_LEFT,
  38     PA_CHANNEL_POSITION_RIGHT,
  39
  40     PA_CHANNEL_POSITION_FRONT_CENTER,
  41     PA_CHANNEL_POSITION_FRONT_LEFT = PA_CHANNEL_POSITION_LEFT,
  42     PA_CHANNEL_POSITION_FRONT_RIGHT = PA_CHANNEL_POSITION_RIGHT,
  43
  44     PA_CHANNEL_POSITION_REAR_CENTER,
  45     PA_CHANNEL_POSITION_REAR_LEFT,
  46     PA_CHANNEL_POSITION_REAR_RIGHT,
  47
  48     PA_CHANNEL_POSITION_LFE,
  49     PA_CHANNEL_POSITION_SUBWOOFER = PA_CHANNEL_POSITION_LFE,
  50
  51     PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
  52     PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
  53
  54     PA_CHANNEL_POSITION_SIDE_LEFT,
  55     PA_CHANNEL_POSITION_SIDE_RIGHT,
  56
  57     PA_CHANNEL_POSITION_AUX0,
  58     PA_CHANNEL_POSITION_AUX1,
  59     PA_CHANNEL_POSITION_AUX2,
  60     PA_CHANNEL_POSITION_AUX3,
  61     PA_CHANNEL_POSITION_AUX4,
  62     PA_CHANNEL_POSITION_AUX5,
  63     PA_CHANNEL_POSITION_AUX6,
  64     PA_CHANNEL_POSITION_AUX7,
  65     PA_CHANNEL_POSITION_AUX8,
  66     PA_CHANNEL_POSITION_AUX9,
  67     PA_CHANNEL_POSITION_AUX10,
  68     PA_CHANNEL_POSITION_AUX11,
  69     PA_CHANNEL_POSITION_AUX12,
  70     PA_CHANNEL_POSITION_AUX13,
  71     PA_CHANNEL_POSITION_AUX14,
  72     PA_CHANNEL_POSITION_AUX15,
  73
  74     PA_CHANNEL_POSITION_MAX
  75 } pa_channel_position_t;
  76
  77 typedef struct pa_channel_map {
  78     uint8_t channels;
  79     pa_channel_position_t map[PA_CHANNELS_MAX];
  80 } pa_channel_map;
  81
  82 pa_channel_map* pa_channel_map_init(pa_channel_map *m);
  83 pa_channel_map* pa_channel_map_init_mono(pa_channel_map *m);
  84 pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m);
  85 pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels);
  86
  87 const char* pa_channel_position_to_string(pa_channel_position_t pos);
  88
  89 #define PA_CHANNEL_MAP_SNPRINT_MAX 64
  90 char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map);
  91
  92 int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b);
  93
  94 int pa_channel_map_valid(const pa_channel_map *map);
  95
  96 PA_C_DECL_END
  97
  98 #endif