AudioMixingUtil

Kotlin |Java

@UnstableApi
public final class AudioMixingUtil

Utility for mixing audio buffers.

Summary

Public methods
`static boolean`	`canMix(AudioProcessor.AudioFormat audioFormat)`
`static boolean`	`canMix( AudioProcessor.AudioFormat inputAudioFormat, AudioProcessor.AudioFormat outputAudioFormat )`
`static ByteBuffer`	`mix( ByteBuffer inputBuffer, AudioProcessor.AudioFormat inputAudioFormat, ByteBuffer mixingBuffer, AudioProcessor.AudioFormat mixingAudioFormat, ChannelMixingMatrix matrix, int framesToMix, boolean accumulate, boolean clipFloatOutput )` Mixes audio from the input buffer into the mixing buffer.

Public methods

canMix

public static boolean canMix(AudioProcessor.AudioFormat audioFormat)

canMix

public static boolean canMix(
    AudioProcessor.AudioFormat inputAudioFormat,
    AudioProcessor.AudioFormat outputAudioFormat
)

mix

public static ByteBuffer mix(
    ByteBuffer inputBuffer,
    AudioProcessor.AudioFormat inputAudioFormat,
    ByteBuffer mixingBuffer,
    AudioProcessor.AudioFormat mixingAudioFormat,
    ChannelMixingMatrix matrix,
    int framesToMix,
    boolean accumulate,
    boolean clipFloatOutput
)

Mixes audio from the input buffer into the mixing buffer.

canMix must return true for the formats.

Parameters
`ByteBuffer inputBuffer`	Input audio `ByteBuffer`, the position is advanced by the amount of bytes read and mixed.
`AudioProcessor.AudioFormat inputAudioFormat`	`AudioFormat` of the `inputBuffer`.
`ByteBuffer mixingBuffer`	Mixing audio `ByteBuffer`, the position is advanced by the amount of bytes written.
`AudioProcessor.AudioFormat mixingAudioFormat`	`AudioFormat` of the `mixingBuffer`.
`ChannelMixingMatrix matrix`	Scaled channel mapping from input to output.
`int framesToMix`	Number of audio frames to mix. Must be within the bounds of both buffers.
`boolean accumulate`	Whether to accumulate with the existing samples in the mixing buffer.
`boolean clipFloatOutput`	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.