Changeset 3799 for pjproject/trunk/pjsip/src/pjsua-lib/pjsua_vid.c

Timestamp:

Oct 6, 2011 7:37:46 AM (13 years ago)

Author:

bennylp

Message:

Misc (re #1370): fixed change video capture device for a call implementation

File:

• pjproject/trunk/pjsip/src/pjsua-lib/pjsua_vid.c (modified) (5 diffs)

pjproject/trunk/pjsip/src/pjsua-lib/pjsua_vid.c

@@ -1822 +1822 @@
     pjmedia_event_unsubscribe(&call_med->esub_cap);
     
-    /* = Detach stream port from the old capture device = */
-    status = pjmedia_vid_port_disconnect(w->vp_cap);
-    if (status != PJ_SUCCESS)
-        return status;
-
+    /* temporarily disconnect while we operate on the tee. */
+    pjmedia_vid_port_disconnect(w->vp_cap);
+
+    /* = Detach stream port from the old capture device's tee = */
     status = pjmedia_vid_tee_remove_dst_port(w->tee, media_port);
     if (status != PJ_SUCCESS) {
-        /* Connect back the old capturer */
-        pjmedia_vid_port_connect(w->vp_cap, media_port, PJ_FALSE);
-        return status;
-    }
+        /* Something wrong, assume that media_port has been removed
+         * and continue.
+         */
+        PJ_PERROR(4,(THIS_FILE, status,
+                     "Warning: call %d: unable to remove video from tee",
+                     call->index));
+    }
+
+    /* Reconnect again immediately. We're done with w->tee */
+    pjmedia_vid_port_connect(w->vp_cap, w->tee, PJ_FALSE);
 
     /* = Attach stream port to the new capture device = */
@@ -1862 +1867 @@
         goto on_error;
 
-    /* Connect capturer to tee */
-    status = pjmedia_vid_port_connect(new_w->vp_cap, new_w->tee, PJ_FALSE);
-    if (status != PJ_SUCCESS)
-        return status;
-
     if (w->vp_rend) {
         /* Start renderer */
@@ -1881 +1881 @@
 
     /* Start capturer */
-    status = pjmedia_vid_port_start(new_w->vp_cap);
-    if (status != PJ_SUCCESS)
-        goto on_error;
+    if (!pjmedia_vid_port_is_running(new_w->vp_cap)) {
+        status = pjmedia_vid_port_start(new_w->vp_cap);
+        if (status != PJ_SUCCESS)
+            goto on_error;
+    }
 
     /* Finally */
@@ -1893 +1895 @@
 
 on_error:
+    PJ_PERROR(4,(THIS_FILE, status,
+                 "Call %d: error changing capture device to %d",
+                 call->index, cap_dev));
+
     if (new_w) {
+        /* Unsubscribe, just in case */
+        pjmedia_event_unsubscribe(&call_med->esub_cap);
         /* Disconnect media port from the new capturer */
         pjmedia_vid_tee_remove_dst_port(new_w->tee, media_port);
@@ -1901 +1909 @@
 
     /* Revert back to the old capturer */
+    pjmedia_vid_port_disconnect(w->vp_cap);
     status = pjmedia_vid_tee_add_dst_port2(w->tee, 0, media_port);
+    pjmedia_vid_port_connect(w->vp_cap, w->tee, PJ_FALSE);
     if (status != PJ_SUCCESS)
         return status;
 
-    status = pjmedia_vid_port_connect(w->vp_cap, w->tee, PJ_FALSE);
-    if (status != PJ_SUCCESS)
-        return status;
+#if ENABLE_EVENT
+    /* Resubscribe */
+    pjmedia_event_subscribe(
+            pjmedia_vid_port_get_event_publisher(w->vp_cap),
+            &call_med->esub_cap);
+#endif
 
     return status;