--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/DisplaySink/inc/cvtimage.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,175 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    Image Transforms subsystem.
+*
+*/
+
+
+
+
+#ifndef CVTIMAGE_H
+#define CVTIMAGE_H
+
+// INCLUDE FILES
+
+#include <e32base.h>
+#include <gdi.h>
+
+// CLASS DECLARATIONS
+
+/**
+*  Abstract base class for VS images.
+*
+*  @lib videosource.lib
+*/
+class CVtImage : public CBase
+	{
+	public:
+        /**
+        * Enumeration for supported image types.
+        */
+        enum TVtImageType
+            {
+            /**
+            * CFbsBitmap image.
+            */
+            EVtImageBitmap,
+
+            /**
+            * YUV 420 planar image where all Y samples are found first in memory as an
+            * array of unsigned char (possibly with a larger stride for memory alignment),
+            * followed immediately by all Cr (U) samples (with half the stride of the Y
+            * lines, and half the number of lines), then followed immediately by all Cb
+            * (V) samples in a similar fashion.
+            */
+            EVtImageIYUV
+            };
+
+        /**
+        * Vt display modes. Used for identifying image's data format.
+        */
+        enum TVtDisplayMode
+            {
+            /**
+            * Unsupported display mode.
+            */
+            EVtColorNone,
+
+            /**
+            * 4096 colour display mode (12 bpp).
+            */
+            EVtColor4K,
+
+            /**
+            * 2^16 colour display mode (16 bpp).
+            */
+            EVtColor64K,
+
+            /**
+            * True colour display mode (24 bpp).
+            */
+            EVtColor16M,
+
+            /**
+            * True colour display mode (32 bpp).
+            */
+            EVtColor16MU,
+
+            /**
+            * True colour display mode with alpha (32 bpp).
+            */
+            EVtColor16MA,
+
+            /**
+            * YUV 420 planar display mode.
+            */
+            EVtColorIYUV
+            };
+
+		/**
+        * Pure virtual function to check whether bitmap heap needs to be locked
+        * for this image type.
+        * @return Returns ETrue if bitmap heap lock is required, EFalse
+        * otherwise.
+        */
+		virtual TBool NeedHeapLock() const = 0;
+
+		/**
+        * Pure virtual function to get displaymode from image.
+        * @return Returns image's displaymode.
+        */
+		virtual TVtDisplayMode DisplayMode() const = 0;
+
+		/**
+        * Pure virtual function to get size of the image in pixels
+        * @return Returns size of the image in pixels.
+        */
+		virtual TSize Size() const = 0;
+
+		/**
+        * Pure virtual function to get how many bytes this image has per
+        * scaline.
+        * @return Returns number of bytes per scanline.
+        */
+		virtual TInt BytesPerRow() const = 0;
+
+		/**
+        * Pure virtual function to get pointer to image data.
+        * @return Returns pointer to image data.
+        */
+		virtual TUint32* DataAddress() const = 0;
+
+		/**
+        * Pure virtual function to get pointer to image data at defined line.
+        * If aLine is lower than zero then line zero is returned, also if aLine
+        * is greater than height of the image minus 1 ( height - 1 ) then line
+        * number ( height - 1 ) is returned.
+        * @param "aLine" Number of vertical line for which pointer is wanted.
+		* @return Returns pointer to the beginning of the requested scanline.
+        */
+        virtual TUint32* LineAddress( TInt aLine ) const = 0;
+
+        /**
+        * Method for getting image type.
+        * @return Returns type of the image.
+        */
+		IMPORT_C TVtImageType Type() const;
+
+    public: // static methods
+
+		/**
+        * Converts given TDisplayMode to corresponding TVtDisplayMode.
+        * @param "aMode" Display mode as TDisplayMode.
+		* @return Returns mode as TVtDisplayMode.
+        */
+        static TVtDisplayMode DisplayModeToVtDisplayMode( TDisplayMode aMode );
+
+    protected:
+
+		/**
+        * C++ constructor.
+        */
+        CVtImage( TVtImageType aType );
+
+    private:
+
+        // Type of the image.
+        TVtImageType iType;
+	};
+
+#endif // CVTIMAGE_H
+
+// End of File
+
+