PAGAudioReader Class Reference

Inherits from	NSObject
Declared in	PAGAudioReader.h

Overview

An audio reader used to obtain the audio frames of a PAGComposition.

`+ MakeWithSampleRate:sampleCount:channels:volume:`

Creates a PAGAudioReader to read audio frame

+ (instancetype)MakeWithSampleRate:(NSInteger)sampleRate sampleCount:(NSInteger)sampleCount channels:(NSInteger)channels volume:(CGFloat)volume

Parameters

`sampleRate`	the sample rate of output audio frame
`sampleCount`	the sample count of output audio frame
`channels`	the channel count of output audio frame
`volume`	the volume of output audio frame which is usually in the range [0 - 1.0].

Declared In

PAGAudioReader.h

`– setComposition:`

Sets a new PAGComposition for PAGAudioReader to play as content. Note: If the composition is already added to another PAGAudioReader, it will be removed from the previous PAGAudioReader.

- (void)setComposition:(PAGComposition *)newComposition

Declared In

PAGAudioReader.h

`– seek:`

Seeks to the specified target time.

- (void)seek:(NSInteger)time

Declared In

PAGAudioReader.h

`– readNextSample`

Read the next audio frame. output format: PCM Signed 16 if channels == 1, channel layout is MONO if channels == 2, channel layout is STEREO

- (PAGAudioSample *)readNextSample

Declared In

PAGAudioReader.h

`– isEmpty`

Returns false if current composition has audio output, e.g. The PAG File has audio bytes or An movie have replaced the contents of PAGImageLayers in a PAGFile

- (BOOL)isEmpty

Declared In

PAGAudioReader.h