Add voice transcoding during phone call with two basic transforms:
- sample rate downscaling by a factor of 2 with a decimator
- sample rate upscaling by a factor of 2 with an interpolator (no
low-pass filter)
Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
Add a mechanism to apply a data transform on the stream's input. An
example mono to stereo transform is provided.
Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com>
