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channelmap: introduce pa_channel_map_mask() and pa_channel_position_mask_t

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Lennart Poettering 2009-05-25 23:51:34 +02:00
parent 261a4830fb
commit 01fa34ba8a
3 changed files with 22 additions and 0 deletions
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12
src/pulse/channelmap.c
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@ -852,3 +852,15 @@ int pa_channel_map_has_position(const pa_channel_map *map, pa_channel_position_t
return 0;
}
pa_channel_position_mask_t pa_channel_map_mask(const pa_channel_map *map) {
unsigned c;
pa_channel_position_mask_t r = 0;
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
for (c = 0; c < map->channels; c++)
r |= PA_CHANNEL_POSITION_MASK(map->map[c]);
return r;
}