andrewlewis beee4732fb Generate complete silent audio frames
`SilentAudioGenerator` could output a fractional audio frame, and this could cause downstream components to throw because of trying to read a complete audio frame but only seeing a partial one.

Calculate the output buffer size based on the frame size (which is a no-op for stereo 16-bit audio) and calculate a total number of frames to output then multiple by the frame size.

PiperOrigin-RevId: 494992941
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2021-10-27 09:12:46 +01:00

Test data module

Provides sample data for media unit and instrumentation tests.