1 files changed, 66 insertions, 0 deletions
diff --git a/src/video-support/VideoMetadataReaderProcess.vala b/src/video-support/VideoMetadataReaderProcess.vala
new file mode 100644
index 0000000..26d61a6
--- /dev/null
+++ b/src/video-support/VideoMetadataReaderProcess.vala
@@ -0,0 +1,66 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+using Gst;
+using Gst.PbUtils;
+
+int main(string[] args) {
+    Intl.setlocale(GLib.LocaleCategory.NUMERIC, "C");
+
+    var option_context = new OptionContext("- shotwell video metadata reader helper binary");
+    option_context.set_help_enabled(true);
+    option_context.add_group(Gst.init_get_option_group());
+
+    double clip_duration;
+    GLib.DateTime timestamp = null;
+
+    try {
+        option_context.parse(ref args);
+
+        if (args.length < 2)
+            throw new IOError.INVALID_ARGUMENT("Missing URI");
+
+        var f = File.new_for_commandline_arg (args[1]);
+
+        Gst.PbUtils.Discoverer d = new Gst.PbUtils.Discoverer((Gst.ClockTime) (Gst.SECOND * 5));
+        Gst.PbUtils.DiscovererInfo info = d.discover_uri(f.get_uri());
+
+        clip_duration = ((double) info.get_duration()) / 1000000000.0;
+
+        // Get creation time.
+        // TODO: Note that TAG_DATE can be changed to TAG_DATE_TIME in the future
+        // (and the corresponding output struct) in order to implement #2836.
+        Gst.DateTime? video_date = null;
+
+        Gst.TagList? tags = null;
+
+        var stream_info = info.get_stream_info();
+        if (stream_info is Gst.PbUtils.DiscovererContainerInfo) {
+            tags = ((Gst.PbUtils.DiscovererContainerInfo)stream_info).get_tags();
+        }
+        else if (stream_info is Gst.PbUtils.DiscovererStreamInfo) {
+            tags = ((Gst.PbUtils.DiscovererStreamInfo)stream_info).get_tags();
+        }
+
+        if (tags != null && tags.get_date_time(Gst.Tags.DATE_TIME, out video_date)) {
+            // possible for get_date() to return true and a null Date
+            if (video_date != null) {
+                timestamp = video_date.to_g_date_time().to_local();
+            }
+        }
+
+        print("%.3f\n", clip_duration);
+        if (timestamp != null) {
+            print("%s\n", timestamp.format_iso8601());
+        } else {
+            print("none\n");
+        }
+    } catch (Error error) {
+        critical("Failed to parse options: %s", error.message);
+
+        return 1;
+    }
+
+    return 0;
+}