import audiomp3, audiocore

TEST_FILE = (

__file__.rsplit("/", 1)[0]

+ "/../circuitpython-manual/audiocore/jeplayer-splash-44100-stereo.mp3"

)

def loudness(values):

return sum(abs(a) for a in values)

def print_frame_loudness(decoder, n):

for i in range(n):

result, buf = audiocore.get_buffer(decoder)

print(f"{i} {result} {loudness(buf):5.0f}")

print()

# First frames

decoder = audiomp3.MP3Decoder(TEST_FILE)

print_frame_loudness(decoder, 8)

# First frames (fresh decoder)

decoder = audiomp3.MP3Decoder(TEST_FILE)

print_frame_loudness(decoder, 2)

# First frames (reopen)

decoder.open(TEST_FILE)

print_frame_loudness(decoder, 3)