linux - Get ALSA peak value from C code -


i'm trying retrieve current audio peak value using alsa , c. prefer have value scalar between 0.0 , 1.0 (or perhaps 0 , 100). on windows use iaudiometerinformation allows me construct basic vu meter.

edit: referring detecting speaker output only, not microphone.

alsa not have current audio peak value.

loop on samples maximum value when you're writing or reading them.


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