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Improve encode_opus.py (Fixes #214)

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Co-authored-by: Alan Jenkins <alan.james.jenkins@gmail.com>
This commit is contained in:
Snesrev
2023-03-06 00:50:59 +01:00
parent 4693920efc
commit 8d3028bd5f
1 changed files with 13 additions and 9 deletions
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22
other/msu/encode_opus.py
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@@ -1,9 +1,9 @@
#!/usr/bin/env python3
import concurrent.futures
import opuslib
import struct
import samplerate # pip install samplerate
import sys
import numpy as np
import argparse
# File format
# 4 byte: OPUZ
@@ -15,8 +15,6 @@ import argparse
# }
def encode_to_msu_opus(msu_infile, bitrate = 128000):
loop_point = 0x4c514
raw_msu1 = bytearray(open(msu_infile, 'rb').read())
if raw_msu1[:4] != b'MSU1':
@@ -27,11 +25,11 @@ def encode_to_msu_opus(msu_infile, bitrate = 128000):
np_audio = np.reshape(np_audio, (-1, 2)).astype(np.float32) * (1.0/32768.0)
assert np_audio.shape[1] == 2
print('Song has %d samples in 44.1khz: %s' % (np_audio.shape[0], np_audio.dtype))
#print('Song has %d samples in 44.1khz: %s' % (np_audio.shape[0], np_audio.dtype))
np_audio = samplerate.resample(np_audio, 48000 / 44100, 'sinc_best')
source_samples = np_audio.shape[0]
msu_repeat_pos = msu_repeat_pos * 48000 // 44100
print('Song has %d samples in 48khz: %s' % (np_audio.shape[0], np_audio.dtype))
#print('Song has %d samples in 48khz: %s' % (np_audio.shape[0], np_audio.dtype))
audio = bytearray(np_audio.tobytes())
@@ -78,7 +76,6 @@ def convert_to_opuz(filename, repeat):
# lookup what sample to seek to based on a sample nr
def lookup_sample(framelist, sample_nr):
print(sample_nr)
last = None
for sample, fileoffs in framelist:
if sample_nr < sample:
@@ -120,5 +117,12 @@ kMsuTracksWithRepeat = [
1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,
]
for i in range(48, 115):
convert_to_opuz(r'../../msu/ALttP-msu-Deluxe-%d.pcm' % i, i >= 48 or kMsuTracksWithRepeat[i])
def task(i):
convert_to_opuz(r"../../msu/ALttP-msu-Deluxe-%d.pcm" % i, i >= 48 or kMsuTracksWithRepeat[i])
with concurrent.futures.ThreadPoolExecutor() as executor:
results = [executor.submit(task, i) for i in range(1, 115)]
for future in concurrent.futures.as_completed(results):
result = future.result()