Copyright	Will Thompson, Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria (garetxe@gmail.com)
Safe Haskell	None
Language	Haskell2010

GI.GstAudio.Structs.AudioDownmixMeta

Contents

Exported types
Methods
- audioDownmixMetaGetInfo
Properties

Description

Extra buffer metadata describing audio downmixing matrix. This metadata is attached to audio buffers and contains a matrix to downmix the buffer number of channels to @channels.

matrix is an two-dimensional array of to_channels times from_channels coefficients, i.e. the i-th output channels is constructed by multiplicating the input channels with the coefficients inmatrix[i] and taking the sum of the results.

Synopsis

Exported types

newtype AudioDownmixMeta Source

Constructors

AudioDownmixMeta (ForeignPtr AudioDownmixMeta)

Instances

((~) * info (ResolveAudioDownmixMetaMethod t AudioDownmixMeta), MethodInfo * info AudioDownmixMeta p) => IsLabel t (AudioDownmixMeta -> p) Source
Methods fromLabel :: Proxy# Symbol t -> AudioDownmixMeta -> p
((~) * info (ResolveAudioDownmixMetaMethod t AudioDownmixMeta), MethodInfo * info AudioDownmixMeta p) => IsLabelProxy t (AudioDownmixMeta -> p) Source
Methods fromLabelProxy :: Proxy Symbol t -> AudioDownmixMeta -> p

newZeroAudioDownmixMeta :: MonadIO m => m AudioDownmixMeta Source

Construct a AudioDownmixMeta struct initialized to zero.

noAudioDownmixMeta :: Maybe AudioDownmixMeta Source

Methods

audioDownmixMetaGetInfo

audioDownmixMetaGetInfo :: MonadIO m => m MetaInfo Source

Properties

FromChannels

audioDownmixMetaReadFromChannels :: AudioDownmixMeta -> IO Int32 Source

FromPosition

audioDownmixMetaReadFromPosition :: AudioDownmixMeta -> IO AudioChannelPosition Source

Matrix

audioDownmixMetaReadMatrix :: AudioDownmixMeta -> IO Float Source

ToChannels

audioDownmixMetaReadToChannels :: AudioDownmixMeta -> IO Int32 Source

ToPosition

audioDownmixMetaReadToPosition :: AudioDownmixMeta -> IO AudioChannelPosition Source