camerabin: do not put video pipeline into READY when start recording camerabin: remember probe IDs and disconnect them when destroying pipelines

gst/camerabin/camerabinvideo.c

@@ -186,6 +186,11 @@ gst_camerabin_video_init (GstCameraBinVideo * vid,
 
   vid->mute = ARG_DEFAULT_MUTE;
 
+  vid->aud_src_probe_id = 0;
+  vid->vid_src_probe_id = 0;
+  vid->vid_tee_probe_id = 0;
+  vid->vid_sink_probe_id = 0;
+
   /* Create src and sink ghost pads */
   vid->sinkpad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
   gst_element_add_pad (GST_ELEMENT (vid), vid->sinkpad);
@@ -194,7 +199,7 @@ gst_camerabin_video_init (GstCameraBinVideo * vid,
   gst_element_add_pad (GST_ELEMENT (vid), vid->srcpad);
 
   /* Add probe for handling eos when stopping recording */
-  gst_pad_add_event_probe (vid->sinkpad,
+  vid->vid_sink_probe_id = gst_pad_add_event_probe (vid->sinkpad,
       G_CALLBACK (camerabin_video_sink_have_event), vid);
 }
 
@@ -206,6 +211,11 @@ gst_camerabin_video_dispose (GstCameraBinVideo * vid)
   g_string_free (vid->filename, TRUE);
   vid->filename = NULL;
 
+  if (vid->vid_sink_probe_id) {
+    gst_pad_remove_event_probe (vid->sinkpad, vid->vid_sink_probe_id);
+    vid->vid_sink_probe_id = 0;
+  }
+
   if (vid->user_post) {
     gst_object_unref (vid->user_post);
     vid->user_post = NULL;
@@ -439,6 +449,10 @@ camerabin_video_pad_aud_src_have_buffer (GstPad * pad, GstBuffer * buffer,
 {
   GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data;
 
+  GST_LOG ("buffer in with size %d duration %" G_GINT64_FORMAT " ts %"
+      GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_BUFFER_DURATION (buffer),
+      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
+
   if (vid->calculate_adjust_ts_aud) {
     GstEvent *event;
     GstPad *peerpad = NULL;
@@ -561,7 +575,7 @@ gst_camerabin_video_create_elements (GstCameraBinVideo * vid)
   }
 
   /* Add probe for rewriting video timestamps */
-  gst_pad_add_buffer_probe (vid->tee_video_srcpad,
+  vid->vid_tee_probe_id = gst_pad_add_buffer_probe (vid->tee_video_srcpad,
       G_CALLBACK (camerabin_video_pad_tee_src0_have_buffer), vid);
 
 #ifdef USE_TIMEOVERLAY
@@ -666,12 +680,12 @@ gst_camerabin_video_create_elements (GstCameraBinVideo * vid)
   vid_srcpad = gst_element_get_static_pad (queue, "src");
   gst_ghost_pad_set_target (GST_GHOST_PAD (vid->srcpad), vid_srcpad);
   /* Never let video bin eos events reach view finder */
-  gst_pad_add_event_probe (vid_srcpad,
+  vid->vid_src_probe_id = gst_pad_add_event_probe (vid_srcpad,
       G_CALLBACK (gst_camerabin_drop_eos_probe), vid);
   gst_object_unref (vid_srcpad);
 
   pad = gst_element_get_static_pad (vid->aud_src, "src");
-  gst_pad_add_buffer_probe (pad,
+  vid->aud_src_probe_id = gst_pad_add_buffer_probe (pad,
       G_CALLBACK (camerabin_video_pad_aud_src_have_buffer), vid);
   gst_object_unref (pad);
 
@@ -700,6 +714,32 @@ gst_camerabin_video_destroy_elements (GstCameraBinVideo * vid)
 {
   GST_DEBUG ("destroying video elements");
 
+  /* Remove buffer probe from audio src pad */
+  if (vid->aud_src_probe_id) {
+    GstPad *pad = gst_element_get_static_pad (vid->aud_src, "src");
+    if (pad) {
+      gst_pad_remove_buffer_probe (pad, vid->aud_src_probe_id);
+      gst_object_unref (pad);
+    }
+    vid->aud_src_probe_id = 0;
+  }
+
+  /* Remove EOS event probe from videobin srcpad (queue's srcpad) */
+  if (vid->vid_src_probe_id) {
+    GstPad *pad = gst_ghost_pad_get_target (GST_GHOST_PAD (vid->srcpad));
+    if (pad) {
+      gst_pad_remove_event_probe (pad, vid->vid_src_probe_id);
+      gst_object_unref (pad);
+    }
+    vid->vid_src_probe_id = 0;
+  }
+
+  /* Remove buffer probe from video tee srcpad */
+  if (vid->vid_tee_probe_id) {
+    gst_pad_remove_buffer_probe (vid->tee_video_srcpad, vid->vid_tee_probe_id);
+    vid->vid_tee_probe_id = 0;
+  }
+
   /* Release tee request pads */
   if (vid->tee_video_srcpad) {
     gst_element_release_request_pad (vid->tee, vid->tee_video_srcpad);

gst/camerabin/camerabinvideo.h

@@ -82,6 +82,12 @@ struct _GstCameraBinVideo
 
   GstEvent *pending_eos;
 
+  /* Probe IDs */
+  gulong aud_src_probe_id;
+  gulong vid_src_probe_id;
+  gulong vid_tee_probe_id;
+  gulong vid_sink_probe_id;
+
   gboolean mute;
 };
 

gst/camerabin/gstcamerabin.c

@@ -1597,13 +1597,11 @@ gst_camerabin_start_video_recording (GstCameraBin * camera)
   gst_camerabin_rewrite_tags (camera);
 
   /* Pause the pipeline in order to distribute new clock in paused_to_playing */
-  /* audio src timestamps will be 0 without state change to READY. ??? */
-  gst_element_set_state (GST_ELEMENT (camera), GST_STATE_READY);
-  gst_element_set_locked_state (camera->vidbin, FALSE);
   state_ret = gst_element_set_state (GST_ELEMENT (camera), GST_STATE_PAUSED);
 
   if (state_ret != GST_STATE_CHANGE_FAILURE) {
     g_mutex_lock (camera->capture_mutex);
+    gst_element_set_locked_state (camera->vidbin, FALSE);
     g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
         "active-pad", camera->pad_src_vid, NULL);