Making GstMetadataRetriever display thumbnails:

Get mAudiosink created from setup()
Wait for prepareSync to set the pipeline to paused.
Add videoscale to the pipeline.
Some more debug messages.

3 files changed, 16 insertions, 13 deletions

diff --git a/gstplayer/GstDriver.cpp b/gstplayer/GstDriver.cpp
index 16dc22f..aaf8ac2 100755
--- a/gstplayer/GstDriver.cpp
+++ b/gstplayer/GstDriver.cpp
@@ -667,8 +667,10 @@ GstDriver::getStreamsInfo ()
     }
 
     if (n_video > 0) {
+      LOGV("We Have a video stream");
       mHaveStreamVideo = TRUE;
-    }
+    } else 
+      LOGV("We don't have a video stream");
 
     mHaveStreamInfo = TRUE;
   }
diff --git a/gstplayer/GstMetadataRetrieverDriver.cpp b/gstplayer/GstMetadataRetrieverDriver.cpp
index c39e359..274d3b2 100644
--- a/gstplayer/GstMetadataRetrieverDriver.cpp
+++ b/gstplayer/GstMetadataRetrieverDriver.cpp
@@ -43,6 +43,7 @@ GstMetadataRetrieverDriver::GstMetadataRetrieverDriver():
 	mPipeline(NULL),
 	mAppsrc(NULL),
     mColorTransform(NULL),
+    mScaler(NULL),
     mPlayBin(NULL),
     mAppSink(NULL),
     mAudioSink(NULL),
@@ -103,9 +104,6 @@ GstMetadataRetrieverDriver::cb_newpad(GstElement *mPlayBin, GstPad *pad,
     str  = gst_caps_get_structure (caps, 0);
     if (g_strrstr (gst_structure_get_name (str), "audio")) {
         LOGI ("cb_newpad Called for an audio pad");
-        data->mAudioSink = gst_element_factory_make ("fakesink", NULL);
-        gst_bin_add (GST_BIN (data->mPipeline), data->mAudioSink);
-        gst_element_set_state (data->mAudioSink, GST_STATE_PAUSED);
         err = gst_element_link (data->mPlayBin, data->mAudioSink);
     }
     else
@@ -135,26 +133,28 @@ void GstMetadataRetrieverDriver::setup(int mode)
         LOGI("For URI:%s", mUri);
 		mPipeline		= gst_pipeline_new ("pipeline");
 		mColorTransform	= gst_element_factory_make ("ffmpegcolorspace", NULL);
+        mScaler         = gst_element_factory_make ("videoscale", NULL);
 		mPlayBin		= gst_element_factory_make ("uridecodebin", "src");
 		mAppSink		= gst_element_factory_make ("appsink", "sink");
+        mAudioSink      = gst_element_factory_make ("fakesink", NULL);
 
 		g_object_set (G_OBJECT (mPlayBin), "uri", mUri, NULL);
 		g_object_set (G_OBJECT (mAppSink), "enable-last-buffer", "true", NULL);
-		g_signal_connect (mPlayBin, "pad-added", G_CALLBACK (cb_newpad),
-							this);
 
 		gst_bin_add_many (GST_BIN (mPipeline), mPlayBin, mColorTransform,
-							mAppSink, NULL);
+							mAudioSink, mScaler, mAppSink, NULL);
 
-		if (!gst_element_link (mColorTransform, mAppSink))
+		if (!gst_element_link (mColorTransform, mScaler))
 			LOGE("Failed to link %s to %s",
 					GST_ELEMENT_NAME (mColorTransform),
-					GST_ELEMENT_NAME (mAppSink));
+					GST_ELEMENT_NAME (mScaler));
 
-		gst_element_set_state (mPlayBin,        GST_STATE_PAUSED);
-		gst_element_set_state (mAppSink,        GST_STATE_PAUSED);
-		gst_element_set_state (mColorTransform, GST_STATE_PAUSED);
+		if (!gst_element_link (mScaler, mAppSink))
+			LOGE("Failed to link %s to %s",
+					GST_ELEMENT_NAME (mScaler),
+					GST_ELEMENT_NAME (mAppSink));
 
+		g_signal_connect (mPlayBin, "pad-added", G_CALLBACK (cb_newpad), this);
 	} else {
 		description = g_strdup_printf("uridecodebin uri=%s name=src ! fakesink name=sink", mUri);
 		mPipeline = gst_parse_launch(description, &error);
@@ -166,6 +166,7 @@ void GstMetadataRetrieverDriver::setup(int mode)
 	}
 	LOGV("pipeline creation: %s", GST_ELEMENT_NAME (mPipeline));
 
+
 	// verbose info (as gst-launch -v)
 	// Activate the trace with the command: "setprop persist.gst.verbose 1"
 	char value[PROPERTY_VALUE_MAX];
@@ -177,7 +178,6 @@ void GstMetadataRetrieverDriver::setup(int mode)
 		        G_CALLBACK (gst_object_default_deep_notify), NULL);
 	}
 
-	//gst_element_set_state (mPipeline, GST_STATE_NULL);
 	mState = GST_STATE_NULL;
 }
 
diff --git a/gstplayer/GstMetadataRetrieverDriver.h b/gstplayer/GstMetadataRetrieverDriver.h
index 181cc3a..a3b790d 100644
--- a/gstplayer/GstMetadataRetrieverDriver.h
+++ b/gstplayer/GstMetadataRetrieverDriver.h
@@ -58,6 +58,7 @@ private:
 	GstElement* mPipeline;
 	GstElement* mAppsrc;
 	GstElement* mColorTransform;
+    GstElement* mScaler;
 	GstElement* mPlayBin;
 	GstElement* mAppSink;
 	GstElement* mAudioSink;