From cf60de4875d293e116c74da9441e639277aad5c7 Mon Sep 17 00:00:00 2001
From: Sebastian Dröge <sebastian.droege@collabora.co.uk>
Date: Thu, 14 May 2009 10:35:22 +0200
Subject: flvmux: Get the max duration from upstream if there's no duration tag

---
 gst/flv/gstflvmux.c | 54 +++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 40 insertions(+), 14 deletions(-)

diff --git a/gst/flv/gstflvmux.c b/gst/flv/gstflvmux.c
index a531a9c1e..2b5caccf5 100644
--- a/gst/flv/gstflvmux.c
+++ b/gst/flv/gstflvmux.c
@@ -569,6 +569,7 @@ gst_flv_mux_write_metadata (GstFlvMux * mux)
   GstBuffer *script_tag, *tmp;
   guint8 *data;
   gint i, n_tags, tags_written = 0;
+  GstClockTime duration = GST_CLOCK_TIME_NONE;
 
   user_tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (mux));
   GST_DEBUG_OBJECT (mux, "upstream tags = %" GST_PTR_FORMAT, mux->tags);
@@ -616,24 +617,11 @@ gst_flv_mux_write_metadata (GstFlvMux * mux)
     const gchar *tag_name =
         gst_structure_nth_field_name ((const GstStructure *) merged_tags, i);
     if (!strcmp (tag_name, GST_TAG_DURATION)) {
-      gdouble d;
       guint64 dur;
 
       if (!gst_tag_list_get_uint64 (merged_tags, GST_TAG_DURATION, &dur))
         continue;
-
-      d = gst_guint64_to_gdouble (dur);
-      d /= (gdouble) GST_SECOND;
-
-      tmp = gst_buffer_new_and_alloc (2 + 8 + 1 + 8);
-      data = GST_BUFFER_DATA (tmp);
-      data[0] = 0;              /* 8 bytes name */
-      data[1] = 8;
-      memcpy (&data[2], "duration", sizeof ("duration"));
-      data[10] = 0;             /* double */
-      GST_WRITE_DOUBLE_BE (data + 11, d);
-      script_tag = gst_buffer_join (script_tag, tmp);
-      tags_written++;
+      duration = dur;
     } else if (!strcmp (tag_name, GST_TAG_ARTIST) ||
         !strcmp (tag_name, GST_TAG_TITLE)) {
       gchar *s;
@@ -663,6 +651,44 @@ gst_flv_mux_write_metadata (GstFlvMux * mux)
     }
   }
 
+
+  if (duration == GST_CLOCK_TIME_NONE) {
+    GSList *l;
+
+    GstFormat fmt = GST_FORMAT_TIME;
+    guint64 dur;
+
+    for (l = mux->collect->data; l; l = l->next) {
+      GstCollectData *cdata = l->data;
+
+      fmt = GST_FORMAT_TIME;
+
+      if (gst_pad_query_peer_duration (cdata->pad, &fmt, (gint64 *) & dur) &&
+          fmt == GST_FORMAT_TIME && dur != GST_CLOCK_TIME_NONE) {
+        if (duration == GST_CLOCK_TIME_NONE)
+          duration = dur;
+        else
+          duration = MAX (dur, duration);
+      }
+    }
+  }
+
+  if (duration != GST_CLOCK_TIME_NONE) {
+    gdouble d;
+    d = gst_guint64_to_gdouble (duration);
+    d /= (gdouble) GST_SECOND;
+
+    tmp = gst_buffer_new_and_alloc (2 + 8 + 1 + 8);
+    data = GST_BUFFER_DATA (tmp);
+    data[0] = 0;                /* 8 bytes name */
+    data[1] = 8;
+    memcpy (&data[2], "duration", sizeof ("duration"));
+    data[10] = 0;               /* double */
+    GST_WRITE_DOUBLE_BE (data + 11, d);
+    script_tag = gst_buffer_join (script_tag, tmp);
+    tags_written++;
+  }
+
   if (mux->have_video) {
     GstPad *video_pad = NULL;
     GSList *l = mux->collect->data;
-- 
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