Module libpulse_binding::channelmap [−][src]
Constants and routines for handing channel mapping.
Overview
Channel maps provide a way to associate channels in a stream with a specific speaker position. This relieves applications of having to make sure their channel order is identical to the final output.
Initialisation
A channel map consists of an array of Position values, one for each channel. This array is
stored together with a channel count in a Map structure.
Before filling the structure, the application must initialise it using Map::init(). There
are also a number of convenience functions for standard channel mappings:
Map::init_mono(): Create a channel map with only mono audio.Map::init_stereo(): Create a standard stereo mapping.Map::init_auto(): Create a standard channel map for a specific number of channels.Map::init_extend(): Similar toMap::init_auto()but synthesize a channel map if no predefined one is known for the specified number of channels.
Structs
| Map | A channel map which can be used to attach labels to specific channels of a stream. |
Enums
| MapDef | Channel map definition standards. |
| Position | A list of channel labels. |
Constants
| POSITION_MASK_ALL | Position mask covering all positions. |
Type Definitions
| PositionMask | A mask of channel positions. |