// Copyright (c) 2007-2009 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:

 //

 #include <e32std.h>

 #include "videoframebuffer.h"

 const TInt TVideoFrameBuffer::iOffset = _FOFF(TVideoFrameBuffer, iDblQueLink);

 /**

 Constructor

 @publishedPartner

 @prototype 

 @param aFormat Data format for the buffer.

 @param aStride Stride for the buffer, i.e. the number of bytes from the start 

 				of one pixel row to the next.

 @param aBufferId Buffer identifier, set by the buffer allocator. Buffer IDs 

 				are used to identify buffers in e.g. buffer rendering notifications.

 @param aChunk The chunk where the buffer is located. Note that the TVideoFrame

 				Buffer does not take ownership of the RChunk.

 @param aOffsetInChunk Offset from the beginning of the chunk for this buffer, in bytes.

 */

 EXPORT_C TVideoFrameBuffer::TVideoFrameBuffer(const TUncompressedVideoFormat& aFormat, 

 												TInt aStride, 

 												TInt aBufferId, 

 												const RChunk& aChunk, 

 												TInt aOffsetInChunk)

 : iFormat(aFormat), iStride(aStride), iBufferId(aBufferId), iChunk(aChunk), iOffsetInChunk(aOffsetInChunk)

 	{

 	}

 /**

 Returns the data format of the buffer. For YUV formats, typically only 

 TUncompressedVideoFormat.iYuvFormat.iDataLayout and iPattern are valid.

 @publishedPartner

 @prototype 

 @return The data format of the buffer.

 */

 EXPORT_C TUncompressedVideoFormat TVideoFrameBuffer::Format() const

 	{

 	return iFormat;

 	}

 /**

 Returns the stride of the buffer. This is the number of bytes from the start 

 of one pixel row to the next. The stride is commonly equal to bytes_per_pixel*width, 

 but can be larger if the buffer requires padding. With planar YUV data the 

 stride refers to luminance (Y) stride. Chrominance (U & V) stride is iStride/2.

 @publishedPartner

 @prototype 

 @return The stride of the buffer.

 */

 EXPORT_C TUint TVideoFrameBuffer::Stride() const

 	{

 	return iStride;

 	}

 /**

 Returns the buffer identifier of the buffer. Buffer IDs are used to identify buffers.

 @publishedPartner

 @prototype 

 @return The buffer id of the buffer.

 */

 EXPORT_C TInt TVideoFrameBuffer::BufferId() const

 	{

 	return iBufferId;

 	}

 /**

 Returns the RChunk where the buffer is located. The RChunk can be shared 

 between several TVideoFrameBuffers.

 @publishedPartner

 @prototype 

 @return The RChunk where the buffer is located.

 */

 EXPORT_C const RChunk& TVideoFrameBuffer::Chunk() const

 	{

 	return iChunk;

 	}

 /**

 Returns a pointer to buffer data as mapped to the current process’s address space.

 @publishedPartner

 @prototype 

 @return A pointer to the buffer data.

 */

 EXPORT_C TUint8* TVideoFrameBuffer::Buffer() const

 	{

 	return iChunk.Base() + iOffsetInChunk;

 	}

 /**

 Returns the buffer status.

 @internalComponent

 @return The buffer status.

 */

 TVideoFrameBuffer::TBufferStatus TVideoFrameBuffer::BufferStatus() const

 	{

 	return iStatus;

 	}

 /**

 Set buffer status.

 @internalComponent

 @param aStatus Buffer status set by video renderer

 */

 void TVideoFrameBuffer::SetBufferStatus(TVideoFrameBuffer::TBufferStatus aStatus)

 	{

 	iStatus = aStatus;

 	}

 /**

 Returns the queue link for use by video renderer.

 @internalComponent

 @return A reference to the queue link

 */

 TDblQueLink& TVideoFrameBuffer::DblQueLink()

 	{

 	return iDblQueLink;

 	}

 /**

 Set presentation time.

 @internalComponent

 @param aTime Presentation time

 */

 void TVideoFrameBuffer::SetPresentationTime(const TTime& aTime)

 	{

 	iPresentationTime = aTime;

 	}

 /**

 Returns presentation time.

 @internalComponent

 @return Presentation time

 */

 TTime TVideoFrameBuffer::PresentationTime() const

 	{

 	return iPresentationTime;

 	}