def get_encoding(ext, dtype):
    exts = {
        "mp3",
        "flac",
        "vorbis",
    }
    encodings = {
        "float32": "PCM_F",
        "int32": "PCM_S",
        "int16": "PCM_S",
        "uint8": "PCM_U",
    }
    return ext.upper() if ext in exts else encodings[dtype]


def get_bit_depth(dtype):
    bit_depths = {
        "float32": 32,
        "int32": 32,
        "int16": 16,
        "uint8": 8,
    }
    return bit_depths[dtype]

def get_bits_per_sample(ext, dtype):
    bits_per_samples = {
        "flac": 24,
        "mp3": 0,
        "vorbis": 0,
    }
    return bits_per_samples.get(ext, get_bit_depth(dtype))