Changeset 3901 for pjproject/trunk/pjsip/src/pjsua-lib/pjsua_media.c

Timestamp:

Dec 7, 2011 10:43:28 AM (12 years ago)

Author:

nanang

Message:

Re #1234: Initial version of keyframe request/response via SIP INFO.

File:

• pjproject/trunk/pjsip/src/pjsua-lib/pjsua_media.c (modified) (3 diffs)

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

@@ -1259 +1259 @@
     pjsua_call_media *call_med = (pjsua_call_media*)user_data;
     pjsua_call *call = call_med->call;
+    pj_status_t status = PJ_SUCCESS;
+  
+    switch(event->type) {
+        case PJMEDIA_EVENT_KEYFRAME_MISSING:
+            if (call->opt.req_keyframe_method & PJSUA_VID_REQ_KEYFRAME_SIP_INFO)
+            {
+                pj_timestamp now;
+
+                pj_get_timestamp(&now);
+                if (pj_elapsed_msec(&call_med->last_req_keyframe, &now) >=
+                    PJSUA_VID_REQ_KEYFRAME_INTERVAL)
+                {
+                    pjsua_msg_data msg_data;
+                    const pj_str_t SIP_INFO = {"INFO", 4};
+                    const char *BODY_TYPE = "application/media_control+xml";
+                    const char *BODY =
+                        "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
+                        "<media_control><vc_primitive><to_encoder>"
+                        "<picture_fast_update/>"
+                        "</to_encoder></vc_primitive></media_control>";
+
+                    PJ_LOG(4,(THIS_FILE, 
+                              "Sending video keyframe request via SIP INFO"));
+
+                    pjsua_msg_data_init(&msg_data);
+                    pj_cstr(&msg_data.content_type, BODY_TYPE);
+                    pj_cstr(&msg_data.msg_body, BODY);
+                    status = pjsua_call_send_request(call->index, &SIP_INFO, 
+                                                     &msg_data);
+                    if (status != PJ_SUCCESS) {
+                        pj_perror(3, THIS_FILE, status,
+                                  "Failed requesting keyframe via SIP INFO");
+                    } else {
+                        call_med->last_req_keyframe = now;
+                    }
+                }
+            }
+            break;
+
+        default:
+            break;
+    }
 
     if (pjsua_var.ua_cfg.cb.on_call_media_event && call) {
@@ -1265 +1307 @@
     }
 
-    return PJ_SUCCESS;
+    return status;
 }
 
@@ -4188 +4230 @@
 
 
+pj_status_t pjsua_media_apply_xml_control(pjsua_call_id call_id,
+                                          const pj_str_t *xml_st)
+{
+    pjsua_call *call = &pjsua_var.calls[call_id];
+    const pj_str_t PICT_FAST_UPDATE = {"picture_fast_update", 19};
+
+#if PJMEDIA_HAS_VIDEO
+    if (pj_strstr(xml_st, &PICT_FAST_UPDATE)) {
+        unsigned i;
+
+        PJ_LOG(4,(THIS_FILE, "Received keyframe request via SIP INFO"));
+
+        for (i = 0; i < call->med_cnt; ++i) {
+            pjsua_call_media *cm = &call->media[i];
+            if (cm->type != PJMEDIA_TYPE_VIDEO || !cm->strm.v.stream)
+                continue;
+
+            pjmedia_vid_stream_send_keyframe(cm->strm.v.stream);
+        }
+
+        return PJ_SUCCESS;
+    }
+#endif
+
+    /* Just to avoid compiler warning of unused var */
+    PJ_UNUSED_ARG(xml_st);
+
+    return PJ_ENOTSUP;
+}
+