channelmap.h

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00001 #ifndef foochannelmaphfoo
00002 #define foochannelmaphfoo
00003 
00004 /* $Id: channelmap.h 1971 2007-10-28 19:13:50Z lennart $ */
00005 
00006 /***
00007   This file is part of PulseAudio.
00008 
00009   Copyright 2005-2006 Lennart Poettering
00010   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
00011 
00012   PulseAudio is free software; you can redistribute it and/or modify
00013   it under the terms of the GNU Lesser General Public License as published
00014   by the Free Software Foundation; either version 2 of the License,
00015   or (at your option) any later version.
00016 
00017   PulseAudio is distributed in the hope that it will be useful, but
00018   WITHOUT ANY WARRANTY; without even the implied warranty of
00019   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00020   General Public License for more details.
00021 
00022   You should have received a copy of the GNU Lesser General Public License
00023   along with PulseAudio; if not, write to the Free Software
00024   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00025   USA.
00026 ***/
00027 
00028 #include <pulse/sample.h>
00029 #include <pulse/cdecl.h>
00030 
00068 PA_C_DECL_BEGIN
00069 
00071 typedef enum pa_channel_position {
00072     PA_CHANNEL_POSITION_INVALID = -1,
00073     PA_CHANNEL_POSITION_MONO = 0,
00074 
00075     PA_CHANNEL_POSITION_LEFT,
00076     PA_CHANNEL_POSITION_RIGHT,
00077     PA_CHANNEL_POSITION_CENTER,
00078 
00079     PA_CHANNEL_POSITION_FRONT_LEFT = PA_CHANNEL_POSITION_LEFT,
00080     PA_CHANNEL_POSITION_FRONT_RIGHT = PA_CHANNEL_POSITION_RIGHT,
00081     PA_CHANNEL_POSITION_FRONT_CENTER = PA_CHANNEL_POSITION_CENTER,
00082 
00083     PA_CHANNEL_POSITION_REAR_CENTER,
00084     PA_CHANNEL_POSITION_REAR_LEFT,
00085     PA_CHANNEL_POSITION_REAR_RIGHT,
00086 
00087     PA_CHANNEL_POSITION_LFE,
00088     PA_CHANNEL_POSITION_SUBWOOFER = PA_CHANNEL_POSITION_LFE,
00089 
00090     PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
00091     PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
00092 
00093     PA_CHANNEL_POSITION_SIDE_LEFT,
00094     PA_CHANNEL_POSITION_SIDE_RIGHT,
00095 
00096     PA_CHANNEL_POSITION_AUX0,
00097     PA_CHANNEL_POSITION_AUX1,
00098     PA_CHANNEL_POSITION_AUX2,
00099     PA_CHANNEL_POSITION_AUX3,
00100     PA_CHANNEL_POSITION_AUX4,
00101     PA_CHANNEL_POSITION_AUX5,
00102     PA_CHANNEL_POSITION_AUX6,
00103     PA_CHANNEL_POSITION_AUX7,
00104     PA_CHANNEL_POSITION_AUX8,
00105     PA_CHANNEL_POSITION_AUX9,
00106     PA_CHANNEL_POSITION_AUX10,
00107     PA_CHANNEL_POSITION_AUX11,
00108     PA_CHANNEL_POSITION_AUX12,
00109     PA_CHANNEL_POSITION_AUX13,
00110     PA_CHANNEL_POSITION_AUX14,
00111     PA_CHANNEL_POSITION_AUX15,
00112     PA_CHANNEL_POSITION_AUX16,
00113     PA_CHANNEL_POSITION_AUX17,
00114     PA_CHANNEL_POSITION_AUX18,
00115     PA_CHANNEL_POSITION_AUX19,
00116     PA_CHANNEL_POSITION_AUX20,
00117     PA_CHANNEL_POSITION_AUX21,
00118     PA_CHANNEL_POSITION_AUX22,
00119     PA_CHANNEL_POSITION_AUX23,
00120     PA_CHANNEL_POSITION_AUX24,
00121     PA_CHANNEL_POSITION_AUX25,
00122     PA_CHANNEL_POSITION_AUX26,
00123     PA_CHANNEL_POSITION_AUX27,
00124     PA_CHANNEL_POSITION_AUX28,
00125     PA_CHANNEL_POSITION_AUX29,
00126     PA_CHANNEL_POSITION_AUX30,
00127     PA_CHANNEL_POSITION_AUX31,
00128 
00129     PA_CHANNEL_POSITION_TOP_CENTER,
00130 
00131     PA_CHANNEL_POSITION_TOP_FRONT_LEFT,
00132     PA_CHANNEL_POSITION_TOP_FRONT_RIGHT,
00133     PA_CHANNEL_POSITION_TOP_FRONT_CENTER,
00134 
00135     PA_CHANNEL_POSITION_TOP_REAR_LEFT,
00136     PA_CHANNEL_POSITION_TOP_REAR_RIGHT,
00137     PA_CHANNEL_POSITION_TOP_REAR_CENTER,
00138 
00139     PA_CHANNEL_POSITION_MAX
00140 } pa_channel_position_t;
00141 
00143 typedef enum pa_channel_map_def {
00144     PA_CHANNEL_MAP_AIFF,   
00145     PA_CHANNEL_MAP_ALSA,   
00146     PA_CHANNEL_MAP_AUX,    
00147     PA_CHANNEL_MAP_WAVEEX, 
00148     PA_CHANNEL_MAP_OSS,    
00150     PA_CHANNEL_MAP_DEFAULT = PA_CHANNEL_MAP_AIFF 
00151 } pa_channel_map_def_t;
00152 
00156 typedef struct pa_channel_map {
00157     uint8_t channels; 
00158     pa_channel_position_t map[PA_CHANNELS_MAX]; 
00159 } pa_channel_map;
00160 
00162 pa_channel_map* pa_channel_map_init(pa_channel_map *m);
00163 
00165 pa_channel_map* pa_channel_map_init_mono(pa_channel_map *m);
00166 
00168 pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m);
00169 
00172 pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def);
00173 
00175 const char* pa_channel_position_to_string(pa_channel_position_t pos) PA_GCC_PURE;
00176 
00178 const char* pa_channel_position_to_pretty_string(pa_channel_position_t pos);
00179 
00181 #define PA_CHANNEL_MAP_SNPRINT_MAX 336
00182 
00184 char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map);
00185 
00187 pa_channel_map *pa_channel_map_parse(pa_channel_map *map, const char *s);
00188 
00190 int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) PA_GCC_PURE;
00191 
00193 int pa_channel_map_valid(const pa_channel_map *map) PA_GCC_PURE;
00194 
00195 PA_C_DECL_END
00196 
00197 #endif

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