Draft: Adding support for audio files

AUTHORS

@@ -36,7 +36,7 @@ alphabetical order):
 - Keith Feldman
 - Keith Johnson
 - Kevin Murray
-- Lucas Cimon
+- Lucas Cimon (@Lucas-C)
 - Lukas Vacek
 - Luke Cyca (@lukecyca)
 - Mate Lakat

src/sigal/audio.py

@@ -0,0 +1,41 @@
+# Copyright (c)      2013 - Christophe-Marie Duquesne
+# Copyright (c) 2013-2023 - Simon Conseil
+# Copyright (c)      2021 - Keith Feldman
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+from os.path import dirname, join
+
+from . import utils
+from .utils import is_valid_html5_audio
+
+AUDIO_THUMB_FILE = join(dirname(__file__), "audio_file.png")
+
+
+def process_audio(media):
+    """Process an audio file: create thumbnail."""
+    settings = media.settings
+
+    with utils.raise_if_debug() as status:
+        utils.copy(media.src_path, media.dst_path, symlink=settings["orig_link"])
+
+    if settings["make_thumbs"]:
+        utils.copy(AUDIO_THUMB_FILE, media.thumb_path)
+
+    return status.value

src/sigal/gallery.py

@@ -53,11 +53,13 @@
     copy,
     get_mime,
     get_mod_date,
+    is_valid_html5_audio,
     is_valid_html5_video,
     read_markdown,
     should_reprocess_album,
     url_from_path,
 )
+from .audio import process_audio
 from .video import process_video
 from .writer import AlbumListPageWriter, AlbumPageWriter
 
@@ -345,6 +347,32 @@
         return self._get_file_date()
 
 
+class Audio(Media):
+    """Gather all informations on an audio file."""
+
+    type = "audio"
+
+    def __init__(self, filename, path, settings):
+        super().__init__(filename, path, settings)
+        self.mime = get_mime(self.src_ext)
+
+    @cached_property
+    def date(self):
+        """The date from the Date metadata if available, or from the file date."""
+        if "date" in self.meta:
+            try:
+                self.logger.debug(
+                    "Reading date from image metadata : %s", self.src_filename
+                )
+                return datetime.fromisoformat(self.meta["date"][0])
+            except Exception:
+                self.logger.debug(
+                    "Reading date from image metadata failed : %s", self.src_filename
+                )
+        # If no date is found in the metadata, return the file date.
+        return self._get_file_date()
+
+
 class Album:
     """Gather all informations on an album.
 
@@ -403,6 +431,8 @@
                 media = Image(f, self.path, settings)
             elif ext.lower() in settings["video_extensions"]:
                 media = Video(f, self.path, settings)
+            elif ext.lower() in settings["audio_extensions"]:
+                media = Audio(f, self.path, settings)
 
             # Allow modification of the media, including overriding the class
             # type for the media.
@@ -964,6 +994,8 @@
         processor = process_image
     elif media.type == "video":
         processor = process_video
+    elif media.type == "audio":
+        processor = process_audio
 
     # Allow overriding of the processor
     result = signals.process_file.send(media, processor=processor)

src/sigal/settings.py

@@ -87,6 +87,7 @@
     "video_format": "webm",
     "video_always_convert": False,
     "video_size": (480, 360),
+    "audio_extensions": [".m4a", ".mp3", ".ogg", ".wav"],
     "watermark": "",
     "webm_options": ["-crf", "10", "-b:v", "1.6M", "-qmin", "4", "-qmax", "63"],
     "webm_options_second_pass": None,
@@ -121,6 +122,8 @@
 
     if ext.lower() in settings["video_extensions"]:
         ext = ".jpg"
+    if ext.lower() in settings["audio_extensions"]:
+        ext = ".png"  # extension of sigal.audio.AUDIO_THUMB_FILE
     return join(
         path,
         settings["thumb_dir"],

src/sigal/utils.py

@@ -35,6 +35,7 @@
 logger = logging.getLogger(__name__)
 MD = None
 VIDEO_MIMES = {".mp4": "video/mp4", ".webm": "video/webm", ".ogv": "video/ogg"}
+AUDIO_MIMES = {".m4a": "audio/m4a", ".mp3": "audio/mpeg", ".ogg": "audio/ogg", ".wav": "audio/x-wav"}
 
 
 class Devnull:
@@ -146,9 +147,17 @@
     return ext in VIDEO_MIMES.keys()
 
 
+def is_valid_html5_audio(ext):
+    """Checks if ext is a supported HTML5 video."""
+    return ext in AUDIO_MIMES.keys()
+
+
 def get_mime(ext):
     """Returns mime type for extension."""
-    return VIDEO_MIMES[ext]
+    mime_type = VIDEO_MIMES.get(ext) or AUDIO_MIMES.get(ext)
+    if not mime_type:
+        raise RuntimeError(f"Could not figure mime type, unknown file extension: {ext}")
+    return mime_type
 
 
 def init_plugins(settings):