AudioMixingUtil

Kotlin |Java

@UnstableApi
class AudioMixingUtil

Utility for mixing audio buffers.

Summary

Public functions
`java-static Boolean`	`canMix(audioFormat: AudioProcessor.AudioFormat!)`
`java-static Boolean`	`canMix( inputAudioFormat: AudioProcessor.AudioFormat!, outputAudioFormat: AudioProcessor.AudioFormat! )`
`java-static ByteBuffer!`	`mix( inputBuffer: ByteBuffer!, inputAudioFormat: AudioProcessor.AudioFormat!, mixingBuffer: ByteBuffer!, mixingAudioFormat: AudioProcessor.AudioFormat!, matrix: ChannelMixingMatrix!, framesToMix: Int, accumulate: Boolean, clipFloatOutput: Boolean )` Mixes audio from the input buffer into the mixing buffer.

Public functions

canMix

java-static fun canMix(audioFormat: AudioProcessor.AudioFormat!): Boolean

canMix

java-static fun canMix(
    inputAudioFormat: AudioProcessor.AudioFormat!,
    outputAudioFormat: AudioProcessor.AudioFormat!
): Boolean

mix

java-static fun mix(
    inputBuffer: ByteBuffer!,
    inputAudioFormat: AudioProcessor.AudioFormat!,
    mixingBuffer: ByteBuffer!,
    mixingAudioFormat: AudioProcessor.AudioFormat!,
    matrix: ChannelMixingMatrix!,
    framesToMix: Int,
    accumulate: Boolean,
    clipFloatOutput: Boolean
): ByteBuffer!

Mixes audio from the input buffer into the mixing buffer.

canMix must return true for the formats.

Parameters
`inputBuffer: ByteBuffer!`	Input audio `ByteBuffer`, the position is advanced by the amount of bytes read and mixed.
`inputAudioFormat: AudioProcessor.AudioFormat!`	`AudioFormat` of the `inputBuffer`.
`mixingBuffer: ByteBuffer!`	Mixing audio `ByteBuffer`, the position is advanced by the amount of bytes written.
`mixingAudioFormat: AudioProcessor.AudioFormat!`	`AudioFormat` of the `mixingBuffer`.
`matrix: ChannelMixingMatrix!`	Scaled channel mapping from input to output.
`framesToMix: Int`	Number of audio frames to mix. Must be within the bounds of both buffers.
`accumulate: Boolean`	Whether to accumulate with the existing samples in the mixing buffer.
`clipFloatOutput: Boolean`	Whether to clip the output signal to be in the [-1.0, 1.0] range if the output encoding is `ENCODING_PCM_FLOAT`.

Returns
`ByteBuffer!`	The `mixingBuffer`, for convenience.