Updated zip compression method, and README

This commit is contained in:
Samuel Ortion 2021-07-13 10:41:10 +02:00
parent f9a0c18120
commit 407a7b0477
2 changed files with 32 additions and 21 deletions

View File

@ -1,3 +1,10 @@
# TadaridaTools
Set of Tools to perform acoustic analysis and preprocess audio recordings to be sent to Vigie-Chiro plateform.
## tadam requirements
* 7z
* python3
* python soundfile

View File

@ -25,7 +25,6 @@ import getopt
import zipfile
verbose = False
chunk_length = -1
def usage():
usage_str = """
@ -40,7 +39,7 @@ def usage():
License: GNU GPL v3 or later
Requirements:
pysoundfile
pysoundfile, numpy
Usage:
./tadam.py -i INPUT_FOLDER [ -o OUTPUT_FOLDER ]
@ -56,24 +55,13 @@ def usage():
-r (--ratio) - Specify samplerate convertion rate
Example:
tadam -v -i raw -o exp -l 5 -z -p "Car910130-2021-Pass0-Z1-AudioMoth-247AA5015FDF286B-" -r 0.1
tadam -v -i raw -o exp -l 5 -z -p "Car910130-2021-Pass1-Z1-AudioMoth_" -r 0.1
"""
print(usage_str)
def rate(infile, outfile, rate_ratio):
data, samplerate = sf.read(infile)
new_samplerate = int(samplerate * rate_ratio)
if (chunk_length != -1):
if verbose:
print(f"\t Splitting {infile} in {chunk_length}s-long chunks.")
sections = int(np.ceil(len(data) / samplerate / chunk_length))
for i in range(sections):
if verbose:
print(f"\t {str(i).zfill(len(str(sections)))}/{sections} \t {outfile}")
filename = outfile.replace('.wav', f'-{str(i).zfill(len(str(sections)))}.wav')
temp = data[i*samplerate*chunk_length : i*samplerate*chunk_length+samplerate*chunk_length]
sf.write(filename, temp, samplerate)
else:
sf.write(outfile, data, new_samplerate)
def convert_folder(infolder, outfolder, rate_ratio, prefix):
@ -85,17 +73,31 @@ def convert_folder(infolder, outfolder, rate_ratio, prefix):
n = len(infiles)
i = 1
for infile in infiles:
outfile = prefix + infile.replace('.WAV', '.wav').replace('.wav', f'.exp_x{int(1/rate_ratio)}.wav')
outfile = prefix + infile.replace('.WAV', '.wav')
if verbose:
print(f"{str(i).zfill(len(str(n)))}/{n} Processing {infile}{outfile}...")
rate(os.path.join(infolder, infile), os.path.join(outfolder, outfile), rate_ratio)
i += 1
def chunk(outfolder, length):
for file in os.listdir(outfolder):
infile = os.path.join(outfolder, file)
data, samplerate = sf.read(infile)
if verbose:
print(f"\t Splitting {infile} in {length}s-long chunks.")
sections = int(np.ceil(len(data) / samplerate / length))
for i in range(sections):
if verbose:
print(f"\t {str(i).zfill(len(str(sections)))}/{sections} \t {infile}")
filename = infile.replace('.wav', f'_{str(i).zfill(3)}.wav')
temp = data[i*samplerate*length : i*samplerate*length+samplerate*length]
sf.write(filename, temp, samplerate)
os.remove(infile)
def zip_folder(outfolder):
if verbose:
print("Compressing .zip archive...")
with zipfile.ZipFile(f"{outfolder}.zip", 'w') as f:
for file in os.listdir(outfolder):
f.write(os.path.join(outfolder, file))
os.system('7z -v700m a output.zip exp')
if verbose:
print("Archive compressed.")
@ -112,6 +114,7 @@ def main():
outfolder = "exp"
compress = False
prefix = ""
chunk_length = -1
for o, a in opts:
if o in ("-v", "--verbose"):
@ -126,7 +129,6 @@ def main():
elif o in ("-r", "--ratio"):
rate_ratio = float(a)
elif o in ("-l", "--length"):
global chunk_length
chunk_length = int(a)
elif o in ("-z", "--zip"):
compress = True
@ -136,6 +138,8 @@ def main():
assert False, "unhandled option"
convert_folder(infolder, outfolder, rate_ratio, prefix)
if chunk_length != -1:
chunk(outfolder, chunk_length)
if compress:
zip_folder(outfolder)
if verbose: