Bug in TimeshiftPlayerAacAu - mix-up AudioFormat with number of channels #2
Description
Audio from AAC services with a single audio channel (mono) is scrambled and "micky-moused", which is testable in Germany with "hr-info".
The problem is in TimeshiftPlayerAacAu and its derived classes. They are using android.media.AudioFormat constants assigned to mAudioTrackChannelConfig.
However, this variable is then used with pcmAudioData in the respective AudioTrackSink class which expects the plain number of channels. Since the AudioFormat constants are flags with values unrelated to the number of channels, mono streams get 4 channels and stereo streams get 12. The latter seems to be working by chance, but the former does not.
Using instead a variable like mAudioTrackNumChannels with the plain number of channels (1 = mono, 2 = stereo) solves the problem. AudioFormat is not required anywhere.