gst/avi/gstavidemux.c: Memleak and crasher fixes.

Original commit message from CVS:
* gst/avi/gstavidemux.c: (gst_avi_demux_handle_src_event),
(gst_avi_demux_parse_stream), (gst_avi_demux_stream_header),
(gst_avi_demux_invert):
Memleak and crasher fixes.
* gst/wavparse/gstwavparse.c: (gst_wavparse_base_init),
(gst_wavparse_create_sourcepad), (gst_wavparse_stream_headers):
Memleak fixes

ChangeLog

@@ -1,3 +1,13 @@
+2005-12-07  Edward Hervey  <edward@fluendo.com>
+
+	* gst/avi/gstavidemux.c: (gst_avi_demux_handle_src_event),
+	(gst_avi_demux_parse_stream), (gst_avi_demux_stream_header),
+	(gst_avi_demux_invert):
+	Memleak and crasher fixes.
+	* gst/wavparse/gstwavparse.c: (gst_wavparse_base_init),
+	(gst_wavparse_create_sourcepad), (gst_wavparse_stream_headers):
+	Memleak fixes
+
 2005-12-06  Thomas Vander Stichele  <thomas at apestaart dot org>
 
 	* ext/aalib/gstaasink.h:

gst/avi/gstavidemux.c

@@ -468,8 +468,9 @@ gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
       gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
           &stop_type, &stop);
 
-      GST_DEBUG_OBJECT (avi, "seek format %d, %08x, start:%lld, stop:%lld",
+      GST_DEBUG_OBJECT (avi,
-          format, stream->strh->type, start, stop);
+          "seek format %d, flags:%d, %08x, start:%lld, stop:%lld", format,
+          flags, stream->strh->type, start, stop);
 
       if (format != GST_FORMAT_TIME) {
         res &=
@@ -1045,6 +1046,8 @@ gst_avi_demux_parse_stream (GstElement * element, GstBuffer * buf)
   }
 
   /* set proper settings and add it */
+  if (stream->pad)
+    gst_object_unref (stream->pad);
   pad = stream->pad = gst_pad_new_from_template (templ, padname);
   g_free (padname);
 
@@ -1848,7 +1851,8 @@ gst_avi_demux_stream_header (GstAviDemux * avi)
                 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))));
             /* fall-through */
           case GST_RIFF_TAG_JUNK:
-            gst_buffer_unref (sub);
+            if (sub)
+              gst_buffer_unref (sub);
             break;
         }
         break;
@@ -1858,7 +1862,8 @@ gst_avi_demux_stream_header (GstAviDemux * avi)
             offset, GST_FOURCC_ARGS (tag));
         /* fall-through */
       case GST_RIFF_TAG_JUNK:
-        gst_buffer_unref (sub);
+        if (sub)
+          gst_buffer_unref (sub);
         break;
     }
   }
@@ -1908,6 +1913,7 @@ gst_avi_demux_stream_header (GstAviDemux * avi)
             if (t) {
               gst_element_found_tags (GST_ELEMENT (avi), t);
             }
+            gst_buffer_unref (sub);
             gst_buffer_unref (buf);
           }
           /* gst_riff_read_chunk() has already advanced avi->offset */
@@ -2068,7 +2074,14 @@ gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
 {
   buf = gst_buffer_make_writable (buf);
   gint y, h = stream->strf.vids->height, w = stream->strf.vids->width;
-  guint8 *tmp = g_malloc (w);
+  guint8 *tmp = NULL;
+
+  if (GST_BUFFER_SIZE (buf) < (w * h)) {
+    GST_WARNING ("Buffer is smaller than reported Width x Height");
+    return buf;
+  }
+
+  tmp = g_malloc (w);
 
   for (y = 0; y < h / 2; y++) {
     swap_line (GST_BUFFER_DATA (buf) + w * y,

gst/wavparse/gstwavparse.c

@@ -143,6 +143,7 @@ static void
 gst_wavparse_base_init (gpointer g_class)
 {
   GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+  GstPadTemplate *templ;
   static GstElementDetails gst_wavparse_details =
       GST_ELEMENT_DETAILS (".wav demuxer",
       "Codec/Demuxer/Audio",
@@ -152,10 +153,12 @@ gst_wavparse_base_init (gpointer g_class)
   gst_element_class_set_details (element_class, &gst_wavparse_details);
 
   /* register src pads */
-  gst_element_class_add_pad_template (element_class,
+  templ = gst_static_pad_template_get (&sink_template_factory);
-      gst_static_pad_template_get (&sink_template_factory));
+  gst_element_class_add_pad_template (element_class, templ);
-  gst_element_class_add_pad_template (element_class,
+  gst_object_unref (templ);
-      gst_static_pad_template_get (&src_template_factory));
+  templ = gst_static_pad_template_get (&src_template_factory);
+  gst_element_class_add_pad_template (element_class, templ);
+  gst_object_unref (templ);
 }
 
 static void
@@ -228,12 +231,14 @@ gst_wavparse_destroy_sourcepad (GstWavParse * wavparse)
 static void
 gst_wavparse_create_sourcepad (GstWavParse * wavparse)
 {
+  GstPadTemplate *templ;
+
   gst_wavparse_destroy_sourcepad (wavparse);
 
   /* source */
-  wavparse->srcpad =
+  templ = gst_static_pad_template_get (&src_template_factory);
-      gst_pad_new_from_template (gst_static_pad_template_get
+  wavparse->srcpad = gst_pad_new_from_template (templ, "src");
-      (&src_template_factory), "src");
+  gst_object_unref (templ);
   gst_pad_use_fixed_caps (wavparse->srcpad);
   gst_pad_set_query_type_function (wavparse->srcpad,
       GST_DEBUG_FUNCPTR (gst_wavparse_get_query_types));
@@ -776,6 +781,9 @@ gst_wavparse_stream_headers (GstWavParse * wav)
   if (!(gst_riff_parse_strf_auds (GST_ELEMENT (wav), buf, &header, &extra)))
     goto parse_header_error;
 
+  if (extra)
+    gst_buffer_unref (extra);
+
   /* Note: gst_riff_create_audio_caps might nedd to fix values in
    * the header header depending on the format, so call it first */
   caps =