New typefind system: bytestream is now part of the core all plugins have been modified to use this new typefind syste...

Original commit message from CVS:
New typefind system:
* bytestream is now part of the core
* all plugins have been modified to use this new typefind system
* asf typefinding added
* mpeg video stream typefiding removed because it's broken
* duplicate typefind entries removed
* extra id3 typefinding added, because we've seen 4 types of files
(riff/wav, flac, vorbis, mp3) with id3 headers and each of these needs
to work. Instead, I've added an id3 element and let it redo typefiding
after the id3 header. this needs a hack because spider only typefinds
once. We can remove this hack once spider supports multiple typefinds.
* with all this, mp3 typefinding is semi-rewritten
* id3 typefinding in flac/vorbis is removed, it's no longer needed
* fixed spider and gst-typefind to use this, too.
* Other general cleanups

1 files changed, 17 insertions, 18 deletions

diff --git a/gst/cdxaparse/gstcdxaparse.c b/gst/cdxaparse/gstcdxaparse.c
index 5af9bd81..bfe3c8ac 100644
--- a/gst/cdxaparse/gstcdxaparse.c
+++ b/gst/cdxaparse/gstcdxaparse.c
@@ -50,7 +50,7 @@ static GstElementDetails gst_cdxa_parse_details = {
   "(C) 2002",
 };
 
-static GstCaps* cdxa_type_find (GstBuffer *buf, gpointer private);
+static GstCaps* cdxa_type_find (GstByteStream *bs, gpointer private);
 
 /* typefactory for 'cdxa' */
 static GstTypeDefinition cdxadefinition = {
@@ -159,25 +159,28 @@ gst_cdxa_parse_init (GstCDXAParse *cdxa_parse)
 }
 
 static GstCaps*
-cdxa_type_find (GstBuffer *buf,
-              gpointer private)
+cdxa_type_find (GstByteStream *bs,
+		gpointer       private)
 {
-  gchar *data = GST_BUFFER_DATA (buf);
-  GstCaps *new;
+  GstBuffer *buf = NULL;
+  GstCaps *new = NULL;
 
   GST_DEBUG ("cdxa_parse: typefind");
 
-  if (GST_BUFFER_SIZE (buf) < 12)
-    return NULL;
+  if (gst_bytestream_peek (bs, &buf, 12) == 12) {
+    guint32 head1 = GUINT32_FROM_LE (((guint32 *) GST_BUFFER_DATA (buf))[0]),
+	    head2 = GUINT32_FROM_LE (((guint32 *) GST_BUFFER_DATA (buf))[2]);
 
-  if (GUINT32_FROM_LE (((guint32 *)data)[0]) != GST_RIFF_TAG_RIFF)
-    return NULL;
-  if (GUINT32_FROM_LE (((guint32 *)data)[2]) != GST_RIFF_RIFF_CDXA)
-    return NULL;
+    if (head1 == GST_RIFF_TAG_RIFF && head2 == GST_RIFF_RIFF_CDXA) {
+      new = GST_CAPS_NEW ("cdxa_type_find",
+			  "video/x-cdxa", 
+			    NULL);
+    }
+  }
 
-  new = GST_CAPS_NEW ("cdxa_type_find",
-		      "video/x-cdxa", 
-		        NULL);
+  if (buf != NULL) {
+    gst_buffer_unref (buf);
+  }
 
   return new;
 }
@@ -342,10 +345,6 @@ plugin_init (GModule *module, GstPlugin *plugin)
   GstElementFactory *factory;
   GstTypeFactory *type;
 
-  /* this filter needs the riff parser */
-  if (!gst_library_load ("gstbytestream"))
-    return FALSE;
-
   /* create an elementfactory for the cdxa_parse element */
   factory = gst_element_factory_new ("cdxaparse", GST_TYPE_CDXA_PARSE,
                                     &gst_cdxa_parse_details);