gst/rtsp/: Add method so that extensions can choose to disable the setup of a stream.

Original commit message from CVS:
* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_open):
* gst/rtsp/gstrtspsrc.h:
* gst/rtsp/rtspext.h:
* gst/rtsp/rtspextwms.c: (rtsp_ext_wms_configure_stream),
(rtsp_ext_wms_get_context):
Add method so that extensions can choose to disable the setup of
a stream.
Make the WMS extension skip setup of x-wms-rtx streams. Fixes #377792.

ChangeLog

@@ -1,3 +1,14 @@
+2006-11-28  Wim Taymans  <wim@fluendo.com>
+
+	* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_open):
+	* gst/rtsp/gstrtspsrc.h:
+	* gst/rtsp/rtspext.h:
+	* gst/rtsp/rtspextwms.c: (rtsp_ext_wms_configure_stream),
+	(rtsp_ext_wms_get_context):
+	Add method so that extensions can choose to disable the setup of
+	a stream.
+	Make the WMS extension skip setup of x-wms-rtx streams. Fixes #377792.
+
 2006-11-27  Wim Taymans  <wim@fluendo.com>
 
 	Patch by: Jonas Holmberg <jonas dot holmberg at axis dot com>

gst/rtsp/gstrtspsrc.c

@@ -1770,6 +1770,14 @@ gst_rtspsrc_open (GstRTSPSrc * src)
     /* create stream from the media, can never return NULL */
     stream = gst_rtspsrc_create_stream (src, &sdp, i);
 
+    /* see if we need to configure this stream */
+    if (src->extension && src->extension->configure_stream) {
+      if (!src->extension->configure_stream (src->extension, stream)) {
+        GST_DEBUG_OBJECT (src, "skipping stream %d, disabled by extension", i);
+        continue;
+      }
+    }
+
     /* merge/overwrite global caps */
     if (stream->caps) {
       guint j, num;
@@ -1791,8 +1799,10 @@ gst_rtspsrc_open (GstRTSPSrc * src)
     }
 
     /* skip setup if we have no URL for it */
-    if (stream->setup_url == NULL)
+    if (stream->setup_url == NULL) {
+      GST_DEBUG_OBJECT (src, "skipping stream %d, no setup", i);
       continue;
+    }
 
     GST_DEBUG_OBJECT (src, "doing setup of stream %d with %s", i,
         stream->setup_url);

gst/rtsp/gstrtspsrc.h

@@ -50,7 +50,6 @@ G_BEGIN_DECLS
 
 #include "gstrtsp.h"
 #include "rtsp.h"
-#include "rtspext.h"
 
 #define GST_TYPE_RTSPSRC \
   (gst_rtspsrc_get_type())
@@ -74,6 +73,8 @@ typedef struct _GstRTSPSrcClass GstRTSPSrcClass;
 
 typedef struct _GstRTSPStream GstRTSPStream;
 
+#include "rtspext.h"
+
 struct _GstRTSPStream {
   gint          id;
 

gst/rtsp/rtspext.h

@@ -45,6 +45,7 @@
 
 #include <glib.h>
 
+#include "gstrtspsrc.h"
 #include "rtsptransport.h"
 #include "sdp.h"
 
@@ -58,17 +59,19 @@ struct _RTSPExtensionCtx
   gchar      *name;
   gpointer   *src;
 
-  gboolean   (*detect_server)  (RTSPExtensionCtx *ctx, RTSPMessage *resp);
+  gboolean   (*detect_server)    (RTSPExtensionCtx *ctx, RTSPMessage *resp);
 
-  RTSPResult (*before_send)    (RTSPExtensionCtx *ctx, RTSPMessage *req);
+  RTSPResult (*before_send)      (RTSPExtensionCtx *ctx, RTSPMessage *req);
-  RTSPResult (*after_send)     (RTSPExtensionCtx *ctx, RTSPMessage *req, RTSPMessage *resp);
+  RTSPResult (*after_send)       (RTSPExtensionCtx *ctx, RTSPMessage *req, RTSPMessage *resp);
 
-  RTSPResult (*parse_sdp)      (RTSPExtensionCtx *ctx, SDPMessage *sdp);
+  RTSPResult (*parse_sdp)        (RTSPExtensionCtx *ctx, SDPMessage *sdp);
-  RTSPResult (*setup_media)    (RTSPExtensionCtx *ctx, SDPMedia *media);
+  RTSPResult (*setup_media)      (RTSPExtensionCtx *ctx, SDPMedia *media);
 
-  RTSPResult (*get_transports) (RTSPExtensionCtx *ctx, RTSPLowerTrans protocols, gchar **transport);
+  gboolean   (*configure_stream) (RTSPExtensionCtx *ctx, GstRTSPStream *stream);
 
-  RTSPResult (*stream_select)  (RTSPExtensionCtx *ctx);
+  RTSPResult (*get_transports)   (RTSPExtensionCtx *ctx, RTSPLowerTrans protocols, gchar **transport);
+
+  RTSPResult (*stream_select)    (RTSPExtensionCtx *ctx);
 };
 
 RTSPExtensionCtx*     	rtsp_extension_detect    	(RTSPMessage *resp);

gst/rtsp/rtspextwms.c

@@ -142,6 +142,25 @@ no_config:
   }
 }
 
+static gboolean
+rtsp_ext_wms_configure_stream (RTSPExtensionCtx * ctx, GstRTSPStream * stream)
+{
+  GstRTSPSrc *src = (GstRTSPSrc *) ctx->src;
+  GstStructure *s;
+  const gchar *encoding;
+
+  s = gst_caps_get_structure (stream->caps, 0);
+  encoding = gst_structure_get_string (s, "encoding-name");
+
+  GST_DEBUG_OBJECT (src, "%" GST_PTR_FORMAT " encoding-name: %s", stream->caps,
+      encoding);
+
+  if (!strcmp (encoding, "x-wms-rtx"))
+    return FALSE;
+
+  return TRUE;
+}
+
 RTSPExtensionCtx *
 rtsp_ext_wms_get_context (void)
 {
@@ -151,6 +170,7 @@ rtsp_ext_wms_get_context (void)
   res->ctx.parse_sdp = rtsp_ext_wms_parse_sdp;
   res->ctx.before_send = rtsp_ext_wms_before_send;
   res->ctx.after_send = rtsp_ext_wms_after_send;
+  res->ctx.configure_stream = rtsp_ext_wms_configure_stream;
 
   return (RTSPExtensionCtx *) res;
 }