Symaptic: os/mm/mmdevicefw/mdf/src/video/hwdevicevideoutils/mdfvideodecoderbuffermanager.h@260cb5ec6c19

     1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    16 #ifndef MDFVIDEODECODERBUFFERMANAGER_H

    17 #define MDFVIDEODECODERBUFFERMANAGER_H

    19 #include <e32base.h>

    20 #include <mmf/devvideo/videoplayhwdevice.h>

    21 #include <mmf/devvideo/devvideoplay.h>

    22 #include <mmf/server/mmfdatabuffer.h>

    24 /**

    26 */

    27 class CVideoDataBuffer : public CBase

    28 	{

    29 public:

    30 	static CVideoDataBuffer* NewL(TUint aSize);

    31 	static CVideoDataBuffer* NewL(CMMFBuffer* aBuffer);

    33 	operator CMMFBuffer*();

    34 	operator TVideoInputBuffer&();

    36 	TBool operator ==(const CMMFBuffer* aBuffer) const;

    37 	TBool operator ==(const TVideoInputBuffer& aVideoInputBuffer) const;

    39 	TUint Length();

    41 	~CVideoDataBuffer();

    42 private:

    43 	CVideoDataBuffer();

    45 	void ConstructL(TUint aSize);

    46 	void ConstructL(CMMFBuffer* aBuffer);

    48 private:

    49 	TUint iSize;

    50 	CMMFBuffer* iMmfBuffer;

    51 	TVideoInputBuffer iVideoInputBuffer;

    52 	};

    54 /**

    56 */

    57 class CVideoFrameBuffer : public CBase

    58 	{

    59 public:

    60 	enum TFrameBufferState

    61 		{

    62 		EEmptied,

    63 		EFilled

    64 		};

    65 public:

    66 	static CVideoFrameBuffer* NewL(TSize aFrameSize, TUncompressedVideoFormat aVideoFormat, TDisplayMode aDisplayMode);

    68 	operator CMMFBuffer&();

    69 	operator CMMFBuffer*();

    70 	operator TVideoPicture&();

    71 	operator TVideoPicture*();

    73 	TBool operator ==(const CMMFBuffer* aBuffer) const;

    74 	TBool operator ==(const TVideoPicture& aVideoPicture) const;

    76 	void LockFrameBufferHeap();

    77 	void UnlockFrameBufferHeap();

    78 	void SetLastBuffer(TBool aLastBuffer);

    79 	TBool LastBuffer();

    81 	~CVideoFrameBuffer();

    82 private:

    83 	CVideoFrameBuffer(TSize aFrameSize, TUncompressedVideoFormat aVideoFormat, TDisplayMode aDisplayMode);

    85 	void ConstructL();

    87 	CMMFBuffer* iMmfBuffer;

    88 	TVideoPicture iVideoPicture;

    89 	CFbsBitmap* iBitmap;

    91 	HBufC8* iRawBuffer;

    92 	TPtr8 iRawPtr;

    94 	TInt iFrameBufferSize; // still need to fill this in

    95 	TSize iFrameSize;

    96 	TUncompressedVideoFormat iVideoFormat;

    97 	TDisplayMode iDisplayMode;

    98 	TBool iHeapLocked;

    99 	TBool iLastBuffer;

   100 	};

   102 /**

   103 Buffer manager for video decoder hardware device.

   104 @internalComponent

   105 */

   106 class CMdfVideoDecoderBufferManager : public CBase

   107 	{

   109 public:

   110 	static CMdfVideoDecoderBufferManager* NewL();

   111 	~CMdfVideoDecoderBufferManager();

   113 	void Init(const TUncompressedVideoFormat& aFormat);

   115 	// data buffers (input)

   116 	CVideoDataBuffer& CreateDataBufferL(TUint aSize);

   117 	TInt DataBuffersAvailable() const;

   118 	CVideoDataBuffer& GetDataBufferL();

   120 	// for convenience, allow the return of the data buffer in all permutations

   121 	void ReturnDataBufferL(TVideoInputBuffer& aBuffer);

   123 	// frame buffer management

   124 	CVideoFrameBuffer& CreateFrameBufferL(TDisplayMode aDisplayMode);

   126 	CVideoFrameBuffer& GetEmptyFrameBufferL(TBool aLockHeap);

   127 	CVideoFrameBuffer& GetFilledFrameBufferL(TBool aLockHeap);

   129 	void ReturnFrameBufferL(TVideoPicture& aPicture, CVideoFrameBuffer::TFrameBufferState aState);

   130 	void ReturnFrameBufferL(CMMFBuffer* aBuffer,

   131 							CVideoFrameBuffer::TFrameBufferState aState,

   132 							TBool aLastBuffer);

   134 	TInt EmptyFrameBuffersAvailable() const;

   135 	TInt FilledFrameBuffersAvailable() const;

   137 	const TPictureData& LastPictureL() const;

   139 	// getters/setters for frame attributes

   140 	void SetFrameSize(const TSize& aSize);

   141 	void SetFrameBufferSize(TInt aSize);

   142 	const TSize& FrameSize() const;

   143 	TInt FrameBufferSize() const;

   144 	TInt MaxFrameBuffers() const;

   146 private:

   147 	CMdfVideoDecoderBufferManager();

   149 	TInt FindFrameBuffer(const CMMFBuffer* aBuffer) const;

   150 	TInt FindFrameBuffer(const TVideoPicture& aVideoPicture) const;

   151 	TInt FindFrameBuffer(const CVideoFrameBuffer& aFrameBuffer) const;

   153 	void ConstructL();

   154 private:

   155 	// the format of the incoming video

   156 	TUncompressedVideoFormat iFormat;

   158 	// input data buffers

   159 	CVideoDataBuffer* iInputBuffer;

   160 	TBool iInputBufferInUse;

   162 	// output frame buffers

   163 	RPointerArray<CVideoFrameBuffer> iEmptyFrameBuffers;

   164 	RPointerArray<CVideoFrameBuffer> iFilledFrameBuffers;

   166 	RPointerArray<CVideoFrameBuffer> iFrameBuffersInUse;

   168 	TSize iFrameSize;

   169 	TInt iFrameBufferSize;

   170 	TInt iMaxFrameBuffers;

   172 	// last displayed frame

   173 	TPictureData iLastDisplayedFrame;

   175 	};

   177 #endif // MDFVIDEODECODERBUFFERMANAGER_H

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--