Add a tool to split mp3 files into arbitrary chunks of wav files

codes/data/audio/random_mp3_splitter.py

@@ -0,0 +1,41 @@
+import audio2numpy
+from scipy.io import wavfile
+from tqdm import tqdm
+
+from data.util import find_audio_files
+import numpy as np
+import torch
+import torch.nn.functional as F
+import os.path as osp
+
+if __name__ == '__main__':
+    src_dir = 'E:\\audio\\books'
+    clip_length = 5  # In seconds
+    sparsity = .05  # Only this proportion of the total clips are extracted as wavs.
+    output_sample_rate=22050
+    output_dir = 'E:\\audio\\books-clips'
+
+    files = find_audio_files(src_dir, include_nonwav=True)
+    for e, file in enumerate(tqdm(files)):
+        if e < 7250:
+            continue
+        file_basis = osp.relpath(file, src_dir).replace('/', '_').replace('\\', '_')
+        try:
+            wave, sample_rate = audio2numpy.open_audio(file)
+        except:
+            print(f"Error with {file}")
+            continue
+        wave = torch.tensor(wave)
+        # Strip out channels.
+        if len(wave.shape) > 1:
+            wave = wave[0]  # Just use the first channel.
+
+        # Calculate how much data we need to extract for each clip.
+        clip_sz = sample_rate * clip_length
+        interval = int(sample_rate * (clip_length / sparsity))
+        i = 0
+        while (i+clip_sz) < wave.shape[-1]:
+            clip = wave[i:i+clip_sz]
+            clip = F.interpolate(clip.view(1,1,clip_sz), scale_factor=output_sample_rate/sample_rate).squeeze()
+            wavfile.write(osp.join(output_dir, f'{file_basis}_{i}.wav'), output_sample_rate, clip.numpy())
+            i = i + interval

codes/data/audio/wavfile_dataset.py

@@ -7,7 +7,7 @@ import torchaudio
 from tqdm import tqdm
 
 from data.audio.wav_aug import WavAugmentor
-from data.util import get_image_paths, is_wav_file
+from data.util import find_files_of_type, is_wav_file
 from models.tacotron2.taco_utils import load_wav_to_torch
 from utils.util import opt_get
 
@@ -21,7 +21,7 @@ class WavfileDataset(torch.utils.data.Dataset):
             self.audiopaths = torch.load(cache_path)
         else:
             print("Building cache..")
-            self.audiopaths = get_image_paths('img', opt['path'], qualifier=is_wav_file)[0]
+            self.audiopaths = find_files_of_type('img', opt['path'], qualifier=is_wav_file)[0]
             torch.save(self.audiopaths, cache_path)
 
         # Parse options

codes/data/chunk_with_reference.py

@@ -10,7 +10,7 @@ from utils.util import opt_get
 class ChunkWithReference:
     def __init__(self, opt, path):
         self.path = path.path
-        self.tiles, _ = util.get_image_paths('img', self.path)
+        self.tiles, _ = util.find_files_of_type('img', self.path)
         self.need_metadata = opt_get(opt, ['strict'], False) or opt_get(opt, ['needs_metadata'], False)
         self.need_ref = opt_get(opt, ['need_ref'], False)
         if 'ignore_first' in opt.keys():

codes/data/full_image_dataset.py

@@ -29,17 +29,17 @@ class FullImageDataset(data.Dataset):
         self.LQ_env, self.GT_env = None, None
         self.force_multiple = self.opt['force_multiple'] if 'force_multiple' in self.opt.keys() else 1
 
-        self.paths_GT, self.sizes_GT = util.get_image_paths(self.data_type, opt['dataroot_GT'], opt['dataroot_GT_weights'])
+        self.paths_GT, self.sizes_GT = util.find_files_of_type(self.data_type, opt['dataroot_GT'], opt['dataroot_GT_weights'])
         if 'dataroot_LQ' in opt.keys():
             self.paths_LQ = []
             if isinstance(opt['dataroot_LQ'], list):
                 # Multiple LQ data sources can be given, in case there are multiple ways of corrupting a source image and
                 # we want the model to learn them all.
                 for dr_lq in opt['dataroot_LQ']:
-                    lq_path, self.sizes_LQ = util.get_image_paths(self.data_type, dr_lq)
+                    lq_path, self.sizes_LQ = util.find_files_of_type(self.data_type, dr_lq)
                     self.paths_LQ.append(lq_path)
             else:
-                lq_path, self.sizes_LQ = util.get_image_paths(self.data_type, opt['dataroot_LQ'])
+                lq_path, self.sizes_LQ = util.find_files_of_type(self.data_type, opt['dataroot_LQ'])
                 self.paths_LQ.append(lq_path)
 
         assert self.paths_GT, 'Error: GT path is empty.'

codes/data/image_folder_dataset.py

@@ -85,7 +85,7 @@ class ImageFolderDataset:
                     imgs = torch.load(cache_path)
                 else:
                     print("Building image folder cache, this can take some time for large datasets..")
-                    imgs = util.get_image_paths('img', path)[0]
+                    imgs = util.find_files_of_type('img', path)[0]
                     torch.save(imgs, cache_path)
                 for w in range(weight):
                     self.image_paths.extend(imgs)

codes/data/multiscale_dataset.py

@@ -40,7 +40,7 @@ class MultiScaleDataset(data.Dataset):
         self.num_scales = self.opt['num_scales']
         self.hq_size_cap = self.tile_size * 2 ** self.num_scales
         self.scale = self.opt['scale']
-        self.paths_hq, self.sizes_hq = util.get_image_paths(self.data_type, opt['paths'], [1 for _ in opt['paths']])
+        self.paths_hq, self.sizes_hq = util.find_files_of_type(self.data_type, opt['paths'], [1 for _ in opt['paths']])
         self.corruptor = ImageCorruptor(opt)
 
 

codes/data/util.py

@@ -39,10 +39,16 @@ def cv2torch(cv, batchify=True):
 def is_image_file(filename):
     return any(filename.endswith(extension) for extension in IMG_EXTENSIONS)
 
+
 def is_wav_file(filename):
     return filename.endswith('.wav')
 
 
+def is_audio_file(filename):
+    AUDIO_EXTENSIONS = ['.wav', '.mp3', '.wma', 'm4b']
+    return any(filename.endswith(extension) for extension in AUDIO_EXTENSIONS)
+
+
 def _get_paths_from_images(path, qualifier=is_image_file):
     """get image path list from image folder"""
     assert os.path.isdir(path), '{:s} is not a valid directory'.format(path)
@@ -67,14 +73,14 @@ def _get_paths_from_lmdb(dataroot):
     return paths, sizes
 
 
-def get_image_paths(data_type, dataroot, weights=[], qualifier=is_image_file):
+def find_audio_files(dataroot, include_nonwav=False):
-    """get image path list
+    if include_nonwav:
-    support lmdb or image files"""
+        return find_files_of_type(None, dataroot, qualifier=is_audio_file)[0]
-    paths, sizes = None, None
+    else:
-    if dataroot is not None:
+        return find_files_of_type(None, dataroot, qualifier=is_wav_file)[0]
-        if data_type == 'lmdb':
+
-            paths, sizes = _get_paths_from_lmdb(dataroot)
+
-        elif data_type == 'img':
+def find_files_of_type(data_type, dataroot, weights=[], qualifier=is_image_file):
     if isinstance(dataroot, list):
         paths = []
         for i in range(len(dataroot)):
@@ -91,8 +97,6 @@ def get_image_paths(data_type, dataroot, weights=[], qualifier=is_image_file):
     else:
         paths = sorted(_get_paths_from_images(dataroot, qualifier))
         sizes = len(paths)
-        else:
-            raise NotImplementedError('data_type [{:s}] is not recognized.'.format(data_type))
     return paths, sizes
 
 

codes/scripts/audio/test_audio_similarity.py

@@ -4,7 +4,7 @@ import torch
 import torch.nn as nn
 import torch.nn.functional as F
 
-from data.util import is_wav_file, get_image_paths
+from data.util import is_wav_file, find_files_of_type
 from models.audio_resnet import resnet34, resnet50
 from models.tacotron2.taco_utils import load_wav_to_torch
 from scripts.byol.byol_extract_wrapped_model import extract_byol_model_from_state_dict
@@ -12,7 +12,7 @@ from scripts.byol.byol_extract_wrapped_model import extract_byol_model_from_stat
 if __name__ == '__main__':
     window = 48000
     root_path = 'D:\\tmp\\clips'
-    paths = get_image_paths('img', root_path, qualifier=is_wav_file)[0]
+    paths = find_files_of_type('img', root_path, qualifier=is_wav_file)[0]
     clips = []
     for path in paths:
         clip, sr = load_wav_to_torch(os.path.join(root_path, path))

codes/scripts/extract_square_images.py

@@ -39,7 +39,7 @@ class TiledDataset(data.Dataset):
     def __init__(self, opt):
         self.opt = opt
         input_folder = opt['input_folder']
-        self.images = data_util.get_image_paths('img', input_folder)[0]
+        self.images = data_util.find_files_of_type('img', input_folder)[0]
         print("Found %i images" % (len(self.images),))
 
     def __getitem__(self, index):

codes/scripts/extract_temporal_squares.py

@@ -115,7 +115,7 @@ class VideoClipDataset(data.Dataset):
             os.makedirs(frames_out, exist_ok=False)
             n = random.randint(5, 30)
             self.extract_n_frames(path, frames_out, start, n)
-            frames = data_util.get_image_paths('img', frames_out)[0]
+            frames = data_util.find_files_of_type('img', frames_out)[0]
             assert len(frames) == n
             img_runs.append(([self.get_image_tensor(frame) for frame in frames], frames_out))
             start += random.randint(2,5)