push
Pushes the audio waveform to the queue.
It is not necessary to input the whole audio data at once, it is possible to feed it little by little, so that it can be used in real-time with the input from a microphone.
Return
0 if successful, otherwise an error code.
Parameters
src
Audio waveform (PCM in the range -1.0 to 1.0, interleaved when multi channel).
channels
Number of channels.
samples
Number of samples per channel.
sampling
Sampling rate in Hz.