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53 lines
1.7 KiB
53 lines
1.7 KiB
#!/usr/bin/python |
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import wave |
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import os |
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import glob |
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import json |
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import math |
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silenceDuration = 0.05 # Seconds of silence between merged files |
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outfile = "sprite1.wav" # Output file. Will be saved in the path below. |
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def main(folder="./files"): |
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currentTime = 0 |
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sprite = {} |
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# Open output file |
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output = wave.open(outfile, 'wb') |
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# Loop through files in folder and append to outfile |
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for i, infile in enumerate(glob.glob(os.path.join(folder, '*.wav'))): |
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# Open file and get info |
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w = wave.open(infile, 'rb') |
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soundDuration = w.getnframes() / float(w.getframerate()) |
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# First file: determine general parameters- Create silence. |
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if i == 0: |
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print "params", w.getparams() |
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output.setparams(w.getparams()) |
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silenceData = [0] * int(w.getframerate() * 2 * silenceDuration) # N 0's where N are the number of samples corresponding to the duration specified in "silenceDuration" |
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silenceFrames = "".join(wave.struct.pack('h', item) for item in silenceData) |
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# Output sound + silence to file |
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output.writeframes(w.readframes(w.getnframes())) |
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output.writeframes(silenceFrames) |
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w.close() |
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# Create sprite data for Howler |
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start = int(math.floor(currentTime * 1000)) |
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duration = int(math.ceil((soundDuration) * 1000)) |
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sprite[os.path.basename(infile[:-4])] = [start, duration] |
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print "infile", infile, start, duration |
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currentTime += (soundDuration + silenceDuration) |
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# Yay, the worst is behind us. Close output file |
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output.close() |
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# Output howler sprite data |
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print json.dumps(sprite, sort_keys=True, indent=4, separators=(',', ': ')) |
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if __name__ == "__main__": |
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main()
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