Changeset 5149 for pjproject/trunk/pjmedia/src/pjmedia/vid_port.c

Timestamp:

Aug 6, 2015 7:10:33 AM (9 years ago)

Author:

nanang

Message:

Fix #1876: Don't restart renderer when only fps is changing, just modify the clock instead.

File:

• pjproject/trunk/pjmedia/src/pjmedia/vid_port.c (modified) (3 diffs)

pjproject/trunk/pjmedia/src/pjmedia/vid_port.c

@@ -888 +888 @@
     if (event->type == PJMEDIA_EVENT_FMT_CHANGED) {
         const pjmedia_video_format_detail *vfd;
+        const pjmedia_video_format_detail *vfd_cur;
         pjmedia_vid_dev_param vid_param;
         pj_status_t status;
         
+        /* Retrieve the current video format detail */
+        pjmedia_vid_dev_stream_get_param(vp->strm, &vid_param);
+        vfd_cur = pjmedia_format_get_video_format_detail(
+                  &vid_param.fmt, PJ_TRUE);
+        if (!vfd_cur)
+            return PJMEDIA_EVID_BADFORMAT;
+
+        /* Retrieve the new video format detail */
+        vfd = pjmedia_format_get_video_format_detail(
+                  &event->data.fmt_changed.new_fmt, PJ_TRUE);
+        if (!vfd || !vfd->fps.num || !vfd->fps.denum)
+            return PJMEDIA_EVID_BADFORMAT;
+
+        /* Ticket #1876: if this is a passive renderer and only frame rate is
+         * changing, simply modify the clock.
+         */
+        if (vp->dir == PJMEDIA_DIR_RENDER &&
+            vp->stream_role == ROLE_PASSIVE && vp->role == ROLE_ACTIVE)
+        {
+            pj_bool_t fps_only;
+            pjmedia_video_format_detail tmp_vfd;
+            
+            tmp_vfd = *vfd_cur;
+            tmp_vfd.fps = vfd->fps;
+            fps_only = pj_memcmp(vfd, &tmp_vfd, sizeof(*vfd)) == 0;
+            if (fps_only) {
+                pjmedia_clock_param clock_param;
+                clock_param.usec_interval = PJMEDIA_PTIME(&vfd->fps);
+                clock_param.clock_rate = vid_param.clock_rate;
+                pjmedia_clock_modify(vp->clock, &clock_param);
+
+                return pjmedia_event_publish(NULL, vp, event,
+                                             PJMEDIA_EVENT_PUBLISH_POST_EVENT);
+            }
+        }
+
         /* Ticket #1827:
          * Stopping video port should not be necessary here because
@@ -900 +937 @@
         pjmedia_vid_dev_stream_stop(vp->strm);
         
-        /* Retrieve the video format detail */
-        vfd = pjmedia_format_get_video_format_detail(
-                  &event->data.fmt_changed.new_fmt, PJ_TRUE);
-        if (!vfd || !vfd->fps.num || !vfd->fps.denum)
-            return PJMEDIA_EVID_BADFORMAT;
-        
         /* Change the destination format to the new format */
         pjmedia_format_copy(&vp->conv.conv_param.src,
@@ -919 +950 @@
         }
 
-        pjmedia_vid_dev_stream_get_param(vp->strm, &vid_param);
         if (vid_param.fmt.id != vp->conv.conv_param.dst.id ||
             (vid_param.fmt.det.vid.size.h !=