mpeg4decodercontainer.cpp

symbian上的yuv视频文件处理程序 可对yuv的每一帧数据进行读取 处理 显示

/*
========================================================================
 Name        : Mpeg4DecoderContainer.cpp
 Author      : Jin
 Copyright   : Copyright (C) 2005-2008 Cyansoft Studio, All rights Reserved.
 Description : 
========================================================================
*/
// [[[ begin generated region: do not modify [Generated System Includes]
#include <aknviewappui.h>
#include <eikappui.h>
#include <Mpeg4Decoder.rsg>
// ]]] end generated region [Generated System Includes]

// [[[ begin generated region: do not modify [Generated User Includes]
#include "Mpeg4DecoderContainer.h"
#include "Mpeg4DecoderContainerView.h"
#include "Mpeg4Decoder.hrh"
#include "Mpeg4DecoderContainer.hrh"
// ]]] end generated region [Generated User Includes]

// [[[ begin generated region: do not modify [Generated Constants]
// ]]] end generated region [Generated Constants]
#include <Mpeg4DecoderLogo.mbg>
#include <aknutils.h>
/**
 * First phase of Symbian two-phase construction. Should not 
 * contain any code that could leave.
 */
CMpeg4DecoderContainer::CMpeg4DecoderContainer()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	// ]]] end generated region [Generated Contents]
	
	}
/** 
 * Destroy child controls.
 */
CMpeg4DecoderContainer::~CMpeg4DecoderContainer()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	// ]]] end generated region [Generated Contents]
	if( iLogo )
		delete iLogo;
	}
				
/**
 * Construct the control (first phase).
 *  Creates an instance and initializes it.
 *  Instance is not left on cleanup stack.
 * @param aRect bounding rectangle
 * @param aParent owning parent, or NULL
 * @param aCommandObserver command observer
 * @return initialized instance of CMpeg4DecoderContainer
 */
CMpeg4DecoderContainer* CMpeg4DecoderContainer::NewL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CMpeg4DecoderContainer* self = CMpeg4DecoderContainer::NewLC( 
			aRect, 
			aParent, 
			aCommandObserver );
	CleanupStack::Pop( self );
	return self;
	}

/**
 * Construct the control (first phase).
 *  Creates an instance and initializes it.
 *  Instance is left on cleanup stack.
 * @param aRect The rectangle for this window
 * @param aParent owning parent, or NULL
 * @param aCommandObserver command observer
 * @return new instance of CMpeg4DecoderContainer
 */
CMpeg4DecoderContainer* CMpeg4DecoderContainer::NewLC( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CMpeg4DecoderContainer* self = new ( ELeave ) CMpeg4DecoderContainer();
	CleanupStack::PushL( self );
	self->ConstructL( aRect, aParent, aCommandObserver );
	return self;
	}
			
/**
 * Construct the control (second phase).
 *  Creates a window to contain the controls and activates it.
 * @param aRect bounding rectangle
 * @param aCommandObserver command observer
 * @param aParent owning parent, or NULL
 */ 
void CMpeg4DecoderContainer::ConstructL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	if ( aParent == NULL )
	    {
		CreateWindowL();
	    }
	else
	    {
	    SetContainerWindowL( *aParent );
	    }
	iFocusControl = NULL;
	iCommandObserver = aCommandObserver;
	InitializeControlsL();
	SetRect( aRect );
	ActivateL();
	// [[[ begin generated region: do not modify [Post-ActivateL initializations]
	// ]]] end generated region [Post-ActivateL initializations]
	_LIT( KMbmFileLogo, "\\resource\\apps\\Mpeg4DecoderLogo.mbm" );
	iLogo = new ( ELeave ) CFbsBitmap();
	CleanupStack::PushL( iLogo );
	TFileName aFile( KMbmFileLogo );
	User::LeaveIfError( CompleteWithAppPath( aFile ) );
	User::LeaveIfError( iLogo->Load( aFile, EMbmMpeg4decoderlogoLogo ) );
	CleanupStack::Pop( iLogo );	
	}
			
/**
* Return the number of controls in the container (override)
* @return count
*/
TInt CMpeg4DecoderContainer::CountComponentControls() const
	{
	return ( int ) ELastControl;
	}
				
/**
* Get the control with the given index (override)
* @param aIndex Control index [0...n) (limited by #CountComponentControls)
* @return Pointer to control
*/
CCoeControl* CMpeg4DecoderContainer::ComponentControl( TInt aIndex ) const
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	switch ( aIndex )
		{
		}
	// ]]] end generated region [Generated Contents]
	
	// handle any user controls here...
	
	return NULL;
	}
				
/**
 *	Handle resizing of the container. This implementation will lay out
 *  full-sized controls like list boxes for any screen size, and will layout
 *  labels, editors, etc. to the size they were given in the UI designer.
 *  This code will need to be modified to adjust arbitrary controls to
 *  any screen size.
 */				
void CMpeg4DecoderContainer::SizeChanged()
	{
	CCoeControl::SizeChanged();
	LayoutControls();
	// [[[ begin generated region: do not modify [Generated Contents]
			
	// ]]] end generated region [Generated Contents]
	
	}
				
// [[[ begin generated function: do not modify
/**
 * Layout components as specified in the UI Designer
 */
void CMpeg4DecoderContainer::LayoutControls()
	{
	}
// ]]] end generated function

/**
 *	Handle key events.
 */				
TKeyResponse CMpeg4DecoderContainer::OfferKeyEventL( 
		const TKeyEvent& aKeyEvent, 
		TEventCode aType )
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	
	// ]]] end generated region [Generated Contents]
	
	if ( iFocusControl != NULL
		&& iFocusControl->OfferKeyEventL( aKeyEvent, aType ) == EKeyWasConsumed )
		{
		return EKeyWasConsumed;
		}
	return CCoeControl::OfferKeyEventL( aKeyEvent, aType );
	}
				
// [[[ begin generated function: do not modify
/**
 *	Initialize each control upon creation.
 */				
void CMpeg4DecoderContainer::InitializeControlsL()
	{
	
	}
// ]]] end generated function

/** 
 * Handle global resource changes, such as scalable UI or skin events (override)
 */
void CMpeg4DecoderContainer::HandleResourceChange( TInt aType )
	{
	CCoeControl::HandleResourceChange( aType );
	SetRect( iAvkonViewAppUi->View( TUid::Uid( EMpeg4DecoderContainerViewId ) )->ClientRect() );
	// [[[ begin generated region: do not modify [Generated Contents]
	// ]]] end generated region [Generated Contents]
	
	}
				
/**
 *	Draw container contents.
 */				
void CMpeg4DecoderContainer::Draw( const TRect& aRect ) const
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	CWindowGc& gc = SystemGc();
	gc.Clear( aRect );
	
	// ]]] end generated region [Generated Contents]
	TRect aClient = Rect();
	TSize aLogoSize = iLogo->SizeInPixels();
	TUint aX = aClient.iTl.iX + (aClient.Width() - aLogoSize.iWidth)/2;
	TUint aY = aClient.iTl.iY + (aClient.Height() - aLogoSize.iHeight)/2;
	TPoint aPos(aX, aY);
	gc.BitBlt( aPos, iLogo );
	}
				
RWindow& CMpeg4DecoderContainer::GetWindow()
	{
	return Window();
	}