diff options
Diffstat (limited to 'pokemontools/pcm.py')
| -rwxr-xr-x | pokemontools/pcm.py | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/pokemontools/pcm.py b/pokemontools/pcm.py index 2e936d9..3a2920b 100755 --- a/pokemontools/pcm.py +++ b/pokemontools/pcm.py @@ -1,5 +1,8 @@ # pcm.py # Converts between .wav files and 1-bit pcm data. (pcm = pulse-code modulation) +from __future__ import absolute_import +from __future__ import division +from __future__ import print_function import argparse import os @@ -72,7 +75,7 @@ def convert_to_pcm(filenames=[]): # Pack the 1-bit samples together. packed_samples = bytearray() - for i in xrange(0, len(clamped_samples), 8): + for i in range(0, len(clamped_samples), 8): # Read 8 pcm values to pack one byte. packed_value = 0 for j in range(8): @@ -103,14 +106,14 @@ def get_wav_samples(filename): # Unpack the values based on the sample byte width. unpacked_samples = [] - for i in xrange(0, len(samples), sample_width): + for i in range(0, len(samples), sample_width): if sample_width == 1: fmt = 'B' elif sample_width == 2: fmt = 'h' else: # todo: support 3-byte sample width - raise Exception, "Unsupported sample width: " + str(sample_width) + raise Exception("Unsupported sample width: " + str(sample_width)) value = struct.unpack(fmt, samples[i:i + sample_width])[0] unpacked_samples.append(value) @@ -122,7 +125,7 @@ def get_wav_samples(filename): # Also find the average amplitude of the samples. resampled_samples = [] total_value = 0 - interval = float(sample_rate) / BASE_SAMPLE_RATE + interval = sample_rate / BASE_SAMPLE_RATE index = 0 while index < sample_count: sample = unpacked_samples[int(index)] @@ -131,7 +134,7 @@ def get_wav_samples(filename): resampled_samples.append(sample) index += interval - average_sample = float(total_value) / len(resampled_samples) + average_sample = total_value / len(resampled_samples) return resampled_samples, average_sample @@ -148,7 +151,7 @@ def main(): }.get(args.mode, None) if method == None: - raise Exception, "Unknown conversion method!" + raise Exception("Unknown conversion method!") method(args.filenames) |