56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
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#!/usr/bin/env python3
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import subprocess
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import tempfile
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import os
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import os.path
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import collections
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import json
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import sys
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ProcessedTrack = collections.namedtuple("ProcessedTrack", ["dfpwm_file", "artist", "track"])
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def convert_wav_dfpwm(infile, outfile):
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subprocess.run(["java", "-jar", "LionRay.jar", infile, outfile])
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def convert_any_wav(infile, outfile):
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subprocess.run(["ffmpeg", "-hide_banner", "-i", infile, "-ac", "1", outfile], stderr=subprocess.PIPE)
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def process_file(filename):
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parts = list(map(str.strip, os.path.splitext(os.path.basename(filename))[0].split("-")))
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artist = parts[0]
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track = parts[1]
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wav_dest = tempfile.mktemp(".wav")
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convert_any_wav(filename, wav_dest)
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dfpwm_dest = tempfile.mktemp(".dfpwm")
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convert_wav_dfpwm(wav_dest, dfpwm_dest)
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os.remove(wav_dest)
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return ProcessedTrack(dfpwm_dest, artist, track)
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def read_binary(filename):
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with open(filename, "rb") as f:
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return f.read()
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def process_dir(dirname):
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tracks = []
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for file in os.listdir(dirname):
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tracks.append(process_file(os.path.join(dirname, file)))
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tape_image = b""
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tracks_meta = []
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for track in tracks:
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track_meta = {}
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track_meta["start"] = len(tape_image) + 8193
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data = read_binary(track.dfpwm_file)
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os.remove(track.dfpwm_file)
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track_meta["end"] = track_meta["start"] + len(data)
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track_meta["artist"] = track.artist
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track_meta["title"] = track.track
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tape_image += data
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tracks_meta.append(track_meta)
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print(track.track, track.artist)
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meta = json.dumps({ "tracks": tracks_meta }).encode("utf-8").ljust(8192, b"\0")
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tape_image = meta + tape_image
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with open("tape.bin", "wb") as f:
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f.write(tape_image)
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process_dir(sys.argv[1])
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