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Classes | |
| class | AEBlockFilter |
| Block filter: Utility class to allow use of a block to filter audio. More... | |
Typedefs | |
| typedef void(^ | AEBlockFilterBlock )(AEAudioFilterProducer producer, void *producerToken, const AudioTimeStamp *time, UInt32 frames, AudioBufferList *audio) |
| Filter processing block. | |
Typedef Documentation
| typedef void(^ AEBlockFilterBlock)(AEAudioFilterProducer producer, void *producerToken, const AudioTimeStamp *time, UInt32 frames, AudioBufferList *audio) |
Filter processing block.
A filter implementation must call the function pointed to by the producer argument, passing producerToken, audio, and frames as arguments, in order to produce as much audio is required to produce frames frames of output audio:
OSStatus status = producer(producerToken, audio, &frames);
if ( status != noErr ) return status;
Then the audio can be processed as desired.
- Parameters
-
producer A function to be called to produce audio for filtering producerToken An opaque pointer to be passed to producer when producing audio time The time the output audio will be played or the time input audio was received, automatically compensated for hardware latency. frames The length of the required audio, in frames audio The audio buffer list to write output audio to