From 9387a8eecefce08102b254a8cc1f9f068f9d4f02 Mon Sep 17 00:00:00 2001
From: Marten Richter <marten.richter@freenet.de>
Date: Sun, 5 Oct 2014 12:43:06 +0200
Subject: [PATCH] Screenshot support for vector based osd on raspberry pi

---
 command.cc   |  5 +++++
 main.cc      |  1 +
 osdopenvg.cc | 35 +++++++++++++++++++++++++++++++++++
 osdopenvg.h  |  2 ++
 osdvector.cc | 25 ++++++++++++++++++++++++-
 osdvector.h  |  2 ++
 6 files changed, 69 insertions(+), 1 deletion(-)

diff --git a/command.cc b/command.cc
index f9f8946..4c41ce1 100644
--- a/command.cc
+++ b/command.cc
@@ -417,7 +417,12 @@ void Command::processMessage(Message* m)
       }
       case Message::SCREENSHOT:
       {
+#ifdef VOMP_PLATTFORM_MVP
         Osd::getInstance()->screenShot("/out.jpg");
+#else
+        logger->log("Osd", Log::NOTICE, "Screenshot Message arrived");
+        Osd::getInstance()->screenShot("out.jpg");
+#endif
         break;
       }
       case Message::CONNECTION_LOST:
diff --git a/main.cc b/main.cc
index 360eea6..b8d193a 100644
--- a/main.cc
+++ b/main.cc
@@ -429,6 +429,7 @@ void sighandler(int signalReceived)
     }
     case SIGUSR1:
     {
+      logger->log("Core", Log::NOTICE, "USR1 signal, screenshot...");
       command->sig1();
       break;
     }
diff --git a/osdopenvg.cc b/osdopenvg.cc
index 86d2dc4..ca67d8d 100644
--- a/osdopenvg.cc
+++ b/osdopenvg.cc
@@ -328,6 +328,41 @@ void OsdOpenVG::getScreenSize(int &width, int &height)
 	height=BACKBUFFER_HEIGHT;
 }
 
+void OsdOpenVG::getRealScreenSize(int &width, int &height)
+{
+	width=display_width;
+	height=display_height;
+}
+
+bool OsdOpenVG::screenShot(void *buffer, int width, int height, bool osd /*include osd*/)
+{
+	if (!initted) return false;
+	if (!buffer) return false;
+
+	DISPMANX_RESOURCE_HANDLE_T res;
+	DISPMANX_DISPLAY_HANDLE_T display;
+
+	uint32_t image_ptr;
+	VC_RECT_T rect;
+	res=vc_dispmanx_resource_create(VC_IMAGE_RGBA32,width,height,&image_ptr);
+	display=vc_dispmanx_display_open(0);
+	if (!osd ) {
+		vc_dispmanx_snapshot(display, res,
+				(DISPMANX_TRANSFORM_T)(DISPMANX_SNAPSHOT_NO_RGB|DISPMANX_SNAPSHOT_FILL/*|DISPMANX_SNAPSHOT_PACK*/));
+	}
+	else
+	{
+		vc_dispmanx_snapshot(display, res,
+				(DISPMANX_TRANSFORM_T)(DISPMANX_SNAPSHOT_FILL));
+	}
+	vc_dispmanx_rect_set(&rect,0,0,width,height);
+	vc_dispmanx_resource_read_data(res, &rect, buffer, width*4);
+	vc_dispmanx_resource_delete(res);
+	vc_dispmanx_display_close(display);
+	return true;
+
+}
+
 
 void OsdOpenVG::initPaths()
 {
diff --git a/osdopenvg.h b/osdopenvg.h
index 49fdfe6..cd21c3d 100644
--- a/osdopenvg.h
+++ b/osdopenvg.h
@@ -86,6 +86,7 @@ class OsdOpenVG : public OsdVector, public Thread_TYPE, public EGLPictureCreator
     int shutdown();
     int stopUpdate();
 
+    bool screenShot(void *buffer, int width, int height, bool osd /*include osd*/);
 
 
 
@@ -125,6 +126,7 @@ protected:
 	long long  lastrendertime;
 	void InternalRendering();
 	void getScreenSize(int &width, int &height);
+	void getRealScreenSize(int &width, int &height);
 
 
 
diff --git a/osdvector.cc b/osdvector.cc
index da4212c..01f4d9a 100644
--- a/osdvector.cc
+++ b/osdvector.cc
@@ -122,7 +122,30 @@ int OsdVector::getFD()
 
 void OsdVector::screenShot(const char* fileName)
 {
-	//Do nothing,
+	//Do nothing, if no libmagick is there
+#ifdef PICTURE_DECODER_MAGICK
+	int width,height;
+	getRealScreenSize(width,height);
+	size_t length=width*height*4;
+	void *mem=malloc(length);
+
+	try {
+		Blob myblob;
+		if (!screenShot(mem,width,height,true)) {
+			Log::getInstance()->log("OsdVector", Log::DEBUG, "Screenshot failed!");
+			free(mem);
+			return;
+		}
+		myblob.updateNoCopy(mem,length,Blob::MallocAllocator);
+		Image image(myblob,Geometry(width,height),8,"RGBA");
+		image.write(fileName);
+	}catch( Exception &error_ )
+	{
+		Log::getInstance()->log("MagickEncoder", Log::DEBUG, "Libmagick: %s",error_.what());
+
+	}
+
+#endif
 }
 
 Surface * OsdVector::createNewSurface()
diff --git a/osdvector.h b/osdvector.h
index b8d3f21..a3e193c 100644
--- a/osdvector.h
+++ b/osdvector.h
@@ -212,6 +212,7 @@ class OsdVector : public Osd
     int getFD();
 
     void screenShot(const char* fileName);
+    virtual bool screenShot(void *buffer, int width, int height, bool osd /*include osd*/)=0;
 
     Surface * createNewSurface();
 	void BeginPainting();
@@ -241,6 +242,7 @@ class OsdVector : public Osd
 	unsigned int getStyleRef(const DrawStyle &c);
 	virtual void removeStyleRef(unsigned int ref);
 	virtual void getScreenSize(int &width, int &height)=0;
+	virtual void getRealScreenSize(int &width, int &height)=0;
 
 	// should be only called from command thread
 	void informPicture(LoadIndex index, ImageIndex i_index);
-- 
2.39.2