samrobinson 035934c6d4 Combine audio mixing logic across Transformer.
AudioMixingUtil#mix handles input & output in float or Int16 PCM. Given
Float and Int16 use different sample ratnes, this util handles
conversion between the two, based on the encoding being mixed to.

Migrate AudioMixer to use the util, removing AudioMixingAlgorithm
interface and implementation. ChannelMixingAudioProcessor will be
migrated after additional performance checks.

PiperOrigin-RevId: 548994584
2023-07-20 10:22:58 +01:00
..