cdmaker.py

#!/usr/bin/python3
# Copyright (c) 2025 iiPython

# Modules
import sys
import wave
from math import ceil
from pathlib import Path

# Initialization
args = [Path(_) for _ in sys.argv]
if len(args) < 4:
    print(f"cdmaker (c) 2025 iiPython\nusage: ./{args[0].name} <output bin> <output cue> <input wav(s)>")
    exit(1)

# Constants
CD_SECTOR_SIZE = 2352
CD_FRAMES_PER_SECOND = 75

# Handle everything
def main(bin_file: Path, cue_file: Path, *wav_files: Path) -> None:
    def pad(pcm_data: bytes) -> bytes:
        remainder = len(pcm_data) % 2352
        return (pcm_data + b"\x00" * (2352 - remainder)) if remainder else pcm_data

    def calculate_index(offset: int) -> str:
        def clean(item: float) -> str:
            return str(int(item)).zfill(2)

        seconds = offset // 75
        minutes = seconds // 60
        return f"{clean(minutes)}:{clean(seconds - (minutes * 60))}:{clean(offset - ((seconds - (minutes * 60)) * 75) - (minutes * (75 * 60)))}"

    # Initialize .CUE file
    cue_lines = [f"FILE \"{bin_file.name}\" BINARY"]

    # Generate .BIN file
    bin_data, offset = bytearray(), 0
    for index, file in enumerate(wav_files):
        with wave.open(str(file), "rb") as wav:
            number_frames = wav.getnframes()
            pcm_data = wav.readframes(number_frames)

        bin_data.extend(pad(pcm_data))

        # Save track to .CUE
        cue_lines += [
            f"  TRACK {str(index + 1).zfill(2)} AUDIO",
            f"    TITLE \"{file.with_suffix('').name}\"",
            f"    INDEX 01 {calculate_index(offset)}"
        ]
        offset += ceil(number_frames // 588)

    # Cleanup
    bin_file.write_bytes(bin_data)
    cue_file.write_text("\n".join(cue_lines))

if __name__ == "__main__":
    main(*args[1:])