95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
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* Copyright 2011-2013 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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#ifndef CMUS_CHANNELMAP_H
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#define CMUS_CHANNELMAP_H
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#include <string.h>
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#define CHANNELS_MAX 32
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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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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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CHANNEL_POSITION_REAR_CENTER,
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CHANNEL_POSITION_REAR_LEFT,
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CHANNEL_POSITION_REAR_RIGHT,
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CHANNEL_POSITION_LFE,
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CHANNEL_POSITION_SUBWOOFER = CHANNEL_POSITION_LFE,
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CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
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CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
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CHANNEL_POSITION_SIDE_LEFT,
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CHANNEL_POSITION_SIDE_RIGHT,
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CHANNEL_POSITION_TOP_CENTER,
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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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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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CHANNEL_POSITION_MAX
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};
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typedef enum channel_position channel_position_t;
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#define CHANNEL_MAP_INIT { CHANNEL_POSITION_INVALID }
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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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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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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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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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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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void channel_map_init_waveex(int channels, unsigned int mask, channel_position_t *map);
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#endif
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