Generate covers

Generate a cropped cover when uploading a video or a picture.

cps/uploader.py

@@ -18,6 +18,8 @@
 
 import os
 import hashlib
+import shutil
+from subprocess import run
 from tempfile import gettempdir
 from flask_babel import gettext as _
 
@@ -84,6 +86,11 @@ def process(tmp_file_path, original_file_name, original_file_extension, rar_exec
                                         original_file_name,
                                         original_file_extension,
                                         rar_executable)
+        elif extension_upper in ['.MP4', '.WEBM', '.AVI', '.MKV', '.M4V', '.MPG', '.MPEG','.OGV']:
+            meta = video_metadata(tmp_file_path, original_file_name, original_file_extension)
+        elif extension_upper in ['.JPG', '.JPEG', '.PNG', '.GIF', '.SVG', '.WEBP']:
+            meta = image_metadata(tmp_file_path, original_file_name, original_file_extension)
+
     except Exception as ex:
         log.warning('cannot parse metadata, using default: %s', ex)
 
@@ -238,6 +245,63 @@ def pdf_preview(tmp_file_path, tmp_dir):
         log.warning('On Windows this error could be caused by missing ghostscript')
         return None
 
+def video_metadata(tmp_file_path, original_file_name, original_file_extension):
+    video_cover(tmp_file_path)
+    meta = BookMeta(
+        file_path=tmp_file_path,
+        extension=original_file_extension,
+        title=original_file_name,
+        author='Unknown',
+        cover=os.path.splitext(tmp_file_path)[0] + '.cover.jpg',
+        description='',
+        tags='',
+        series="",
+        series_id="",
+        languages="",
+        publisher="",
+        pubdate="",
+        identifiers=[])
+    return meta
+
+
+def video_cover(tmp_file_path):
+    """generate cover image from video using ffmpeg"""
+    ffmpeg_executable = os.getenv('FFMPEG_PATH', 'ffmpeg')
+    ffmpeg_output_file = os.path.splitext(tmp_file_path)[0] + '.cover.jpg'
+    ffmpeg_args = [
+        ffmpeg_executable,
+        '-i', tmp_file_path,
+        '-vframes', '1',
+        '-y', ffmpeg_output_file
+    ]
+
+    try:
+        ffmpeg_result = run(ffmpeg_args, capture_output=True, check=True)
+        log.debug(f"ffmpeg output: {ffmpeg_result.stdout}")
+
+    except Exception as e:
+        log.warning(f"ffmpeg failed: {e}")
+        return None
+
+
+def image_metadata(tmp_file_path, original_file_name, original_file_extension):
+    shutil.copyfile(tmp_file_path, os.path.splitext(tmp_file_path)[0] + '.cover.jpg')
+    meta = BookMeta(
+        file_path=tmp_file_path,
+        extension=original_file_extension,
+        title=original_file_name,
+        author='Unknown',
+        cover=os.path.splitext(tmp_file_path)[0] + '.cover.jpg',
+        description='',
+        tags='',
+        series="",
+        series_id="",
+        languages="",
+        publisher="",
+        pubdate="",
+        identifiers=[])
+    return meta
+
 
 def get_magick_version():
     ret = dict()