Fix predictor bug on windows (#209)

* fix windows bug

ppgan/apps/dain_predictor.py

@@ -78,7 +78,7 @@ class DAINPredictor(BasePredictor):
 
         out_path = video2frames(video_path, frame_path_input)
 
-        vidname = video_path.split('/')[-1].split('.')[0]
+        vidname = video_path.split(os.sep)[-1].split('.')[0]
 
         frames = sorted(glob.glob(os.path.join(out_path, '*.png')))
 
@@ -122,8 +122,8 @@ class DAINPredictor(BasePredictor):
         for i in tqdm(range(frame_num - 1)):
             first = frames[i]
             second = frames[i + 1]
-            first_index = int(first.split('/')[-1].split('.')[-2])
-            second_index = int(second.split('/')[-1].split('.')[-2])
+            first_index = int(first.split(os.sep)[-1].split('.')[-2])
+            second_index = int(second.split(os.sep)[-1].split('.')[-2])
 
             img_first = imread(first)
             img_second = imread(second)
@@ -224,7 +224,7 @@ class DAINPredictor(BasePredictor):
 
         for i in range(num1):
             src = frames1[i]
-            imgname = int(src.split('/')[-1].split('.')[-2])
+            imgname = int(src.split(os.sep)[-1].split('.')[-2])
             assert i == imgname
             dst = os.path.join(combined,
                                '{:08d}.png'.format(i * (num_frames + 1)))
@@ -249,14 +249,14 @@ class DAINPredictor(BasePredictor):
 
         for i in range(num1):
             src = frames1[i]
-            index = int(src.split('/')[-1].split('.')[-2])
+            index = int(src.split(os.sep)[-1].split('.')[-2])
             dst = os.path.join(combined,
                                '{:08d}.png'.format(times_interp * index))
             shutil.copy2(src, dst)
 
         for i in range(num2):
             src = frames2[i]
-            imgname = src.split('/')[-1]
+            imgname = src.split(os.sep)[-1]
             dst = os.path.join(combined, imgname)
             shutil.copy2(src, dst)
 
@@ -279,9 +279,10 @@ class DAINPredictor(BasePredictor):
 
         for (h, hashed_paths) in hashes.items():
             if len(hashed_paths) > 1:
-                first_index = int(hashed_paths[0].split('/')[-1].split('.')[-2])
-                last_index = int(
-                    hashed_paths[-1].split('/')[-1].split('.')[-2]) + 1
+                first_index = int(hashed_paths[0].split(
+                    os.sep)[-1].split('.')[-2])
+                last_index = int(hashed_paths[-1].split(
+                    os.sep)[-1].split('.')[-2]) + 1
                 gap = 2 * (last_index - first_index) - 1
                 if gap > 2 * max_interp:
                     cut1 = len(hashed_paths) // 3

ppgan/utils/download.py

@@ -29,7 +29,7 @@ from tqdm import tqdm
 
 from .logger import get_logger
 
-PPGAN_HOME = os.path.expanduser("~/.cache/ppgan/")
+PPGAN_HOME = os.path.expanduser(os.path.join('~', '.cache', 'ppgan'))
 
 DOWNLOAD_RETRY_LIMIT = 3
 
@@ -243,14 +243,14 @@ def _uncompress_file_tar(filepath, mode="r:*"):
 
 
 def _is_a_single_file(file_list):
-    if len(file_list) == 1 and file_list[0].find(os.sep) < -1:
+    if len(file_list) == 1 and file_list[0].find('/') < -1:
         return True
     return False
 
 
 def _is_a_single_dir(file_list):
-    file_name = file_list[0].split(os.sep)[0]
+    file_name = file_list[0].split('/')[0]
     for i in range(1, len(file_list)):
-        if file_name != file_list[i].split(os.sep)[0]:
+        if file_name != file_list[i].split('/')[0]:
             return False
     return True

ppgan/utils/video.py

@@ -24,14 +24,14 @@ def video2frames(video_path, outpath, **kargs):
         return cmd_str
 
     ffmpeg = ['ffmpeg ', ' -y -loglevel ', ' error ']
-    vid_name = video_path.split('/')[-1].split('.')[0]
+    vid_name = video_path.split(os.sep)[-1].split('.')[0]
     out_full_path = os.path.join(outpath, vid_name)
 
     if not os.path.exists(out_full_path):
         os.makedirs(out_full_path)
 
     # video file name
-    outformat = out_full_path + '/%08d.png'
+    outformat = os.path.join(out_full_path, '%08d.png')
 
     cmd = ffmpeg
     cmd = ffmpeg + [' -i ', video_path, ' -start_number ', ' 0 ', outformat]