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/* |
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* Copyright 2011 Various Authors |
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* Copyright 2011 Johannes Weißl |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, see <http://www.gnu.org/licenses/>. |
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*/ |
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|
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#ifndef _CHANNELMAP_H |
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#define _CHANNELMAP_H |
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|
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#include <string.h> |
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|
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#define CHANNELS_MAX 32 |
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|
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/* Modelled after PulseAudio */ |
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enum channel_position { |
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CHANNEL_POSITION_INVALID = -1, |
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CHANNEL_POSITION_MONO = 0, |
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CHANNEL_POSITION_FRONT_LEFT, |
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CHANNEL_POSITION_FRONT_RIGHT, |
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CHANNEL_POSITION_FRONT_CENTER, |
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|
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CHANNEL_POSITION_LEFT = CHANNEL_POSITION_FRONT_LEFT, |
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CHANNEL_POSITION_RIGHT = CHANNEL_POSITION_FRONT_RIGHT, |
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CHANNEL_POSITION_CENTER = CHANNEL_POSITION_FRONT_CENTER, |
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|
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CHANNEL_POSITION_REAR_CENTER, |
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CHANNEL_POSITION_REAR_LEFT, |
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CHANNEL_POSITION_REAR_RIGHT, |
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|
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CHANNEL_POSITION_LFE, |
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CHANNEL_POSITION_SUBWOOFER = CHANNEL_POSITION_LFE, |
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|
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CHANNEL_POSITION_FRONT_LEFT_OF_CENTER, |
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CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER, |
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|
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CHANNEL_POSITION_SIDE_LEFT, |
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CHANNEL_POSITION_SIDE_RIGHT, |
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|
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CHANNEL_POSITION_TOP_CENTER, |
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|
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CHANNEL_POSITION_TOP_FRONT_LEFT, |
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CHANNEL_POSITION_TOP_FRONT_RIGHT, |
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CHANNEL_POSITION_TOP_FRONT_CENTER, |
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|
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CHANNEL_POSITION_TOP_REAR_LEFT, |
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CHANNEL_POSITION_TOP_REAR_RIGHT, |
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CHANNEL_POSITION_TOP_REAR_CENTER, |
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|
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CHANNEL_POSITION_MAX |
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}; |
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|
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typedef enum channel_position channel_position_t; |
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|
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#define CHANNEL_MAP_INIT { CHANNEL_POSITION_INVALID } |
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|
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#define CHANNEL_MAP(name) \ |
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channel_position_t name[CHANNELS_MAX] = CHANNEL_MAP_INIT |
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|
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static inline int channel_map_valid(const channel_position_t *map) |
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{ |
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return map[0] != CHANNEL_POSITION_INVALID; |
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} |
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|
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static inline int channel_map_equal(const channel_position_t *a, const channel_position_t *b, int channels) |
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{ |
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return memcmp(a, b, sizeof(*a) * channels) == 0; |
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} |
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|
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static inline channel_position_t *channel_map_copy(channel_position_t *dst, const channel_position_t *src) |
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{ |
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return memcpy(dst, src, sizeof(*dst) * CHANNELS_MAX); |
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} |
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|
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static inline void channel_map_init_stereo(channel_position_t *map) |
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{ |
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map[0] = CHANNEL_POSITION_LEFT; |
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map[1] = CHANNEL_POSITION_RIGHT; |
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} |
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|
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void channel_map_init_waveex(int channels, unsigned int mask, channel_position_t *map); |
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|
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#endif |
