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40 lines
1.3 KiB
40 lines
1.3 KiB
#!/usr/bin/env python3
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#
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# Copyright 2019 Jack Humbert
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import wave, struct, sys
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waveFile = wave.open(sys.argv[1], 'r')
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length = waveFile.getnframes()
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out = "#define DAC_WAVETABLE_CUSTOM_LENGTH " + str(int(length / 256)) + "\n\n"
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out += "static const dacsample_t dac_wavetable_custom[" + str(int(length / 256)) + "][256] = {"
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for i in range(0,length):
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if (i % 8 == 0):
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out += "\n "
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if (i % 256 == 0):
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out = out[:-2]
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out += "{\n "
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waveData = waveFile.readframes(1)
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data = struct.unpack("<h", waveData)
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out += str(int((int(data[0]) + 0x8000) / 16)) + ", "
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if (i % 256 == 255):
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out = out[:-2]
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out += "\n },"
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out = out[:-1]
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out += "\n};"
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print(out)
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