08-11-2019, 11:16 AM
Just a bit extra about Cava and its audio input.
Cava doesn't have options to specify the audio parameters for FIFO input (but could) and what you write to the FIFO must be in a fixed format. It is possible to get FIFO output from an ALSA stream using "tee", but the audio needs to be resampled in order to be in the right format for Cava, which means that it has also been resampled for audio output. On the other hand, Cava will also read an ALSA stream directly, and deal with the sample rate internally, but this consumes the stream, which meanis that the ALSA stream has to have been previously duplicated (as in the link in my last post). I could not find anything like "tee" that would simply duplicate an ALSA stream.
Adrian.
Cava doesn't have options to specify the audio parameters for FIFO input (but could) and what you write to the FIFO must be in a fixed format. It is possible to get FIFO output from an ALSA stream using "tee", but the audio needs to be resampled in order to be in the right format for Cava, which means that it has also been resampled for audio output. On the other hand, Cava will also read an ALSA stream directly, and deal with the sample rate internally, but this consumes the stream, which meanis that the ALSA stream has to have been previously duplicated (as in the link in my last post). I could not find anything like "tee" that would simply duplicate an ALSA stream.
Adrian.
