imagingmodules/jp2kcodec/Src/JP2KCodeBlock.cpp
changeset 0 469c91dae73b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagingmodules/jp2kcodec/Src/JP2KCodeBlock.cpp	Thu Dec 17 09:22:31 2009 +0200
@@ -0,0 +1,135 @@
+/*
+* Copyright (c) 2003, 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:  JP2KCodeBlock class used to collect the codeblock
+*                related information such as compressed data and data length.
+*
+*/
+
+
+// INCLUDE FILES
+#include "JP2KCodeBlock.h"
+#include "JP2KUtils.h"
+
+// EXTERNAL DATA STRUCTURES
+
+// EXTERNAL FUNCTION PROTOTYPES  
+
+// CONSTANTS
+
+// MACROS
+
+// LOCAL CONSTANTS AND MACROS
+
+// MODULE DATA STRUCTURES
+
+// LOCAL FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// ============================= LOCAL FUNCTIONS ===============================
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CJ2kCodeBlock::CJ2kCodeBlock
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CJ2kCodeBlock::CJ2kCodeBlock() : 
+    iLastPass(-1), 
+    iLengthBits(3)
+    {
+    }
+
+// Destructor
+CJ2kCodeBlock::~CJ2kCodeBlock()
+    {
+    delete iDataSize;
+    iDataSize = 0;
+
+    delete iPassesPerSegment;
+    iPassesPerSegment = 0;
+
+    delete iNumSegment;
+    iNumSegment = 0;
+
+    delete iData;
+    iData = 0;
+    }
+
+// -----------------------------------------------------------------------------
+// CJ2kCodeBlock::SetCodeBlockCanvas
+// Set the canvas of the code block.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CJ2kCodeBlock::SetCodeBlockCanvas( TInt32 aX, TInt32 aY, TInt32 aWidth, TInt32 aHeight )
+    {
+    iCodeBlockCanvas.iTl = TPoint( aX, aY );
+    iCodeBlockCanvas.SetWidth( aWidth );
+    iCodeBlockCanvas.SetHeight( aHeight );
+    }
+
+// -----------------------------------------------------------------------------
+// CJ2kCodeBlock::InitializeL
+// Initialize the number of segment.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CJ2kCodeBlock::InitializeL( TUint16 aLayer )
+    {
+    iNumSegment = HBufC16::NewMaxL( aLayer );
+    iNumSegment->Des().FillZ();
+    }
+
+// -----------------------------------------------------------------------------
+// CJ2kCodeBlock::DataL
+// Get the data buffer descriptor.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+HBufC8* CJ2kCodeBlock::DataL()
+    {
+    if ( iData )
+        {
+        if ( iData->Des().MaxLength() < (TInt)iDataLength )
+            {
+            iData = iData->ReAllocL( iDataLength );
+            }
+        }
+    else
+        {
+        iData = HBufC8::NewL( iDataLength );
+        }
+
+    return iData;
+    }
+
+// -----------------------------------------------------------------------------
+// CJ2kCodeBlock::Data
+// Get the pointer to the data portion.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+const TUint8* CJ2kCodeBlock::Data() const
+    {
+    if ( iData )
+        {
+        return iData->Ptr();
+        }
+
+    return 0;
+    }
+