/*

* Copyright (c) 2010 ISB.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* ISB - initial contribution.

*

* Contributors:

*

* Description: USB driver for test

*

*/

#ifndef WEBCAMERA_UVC_H_

#include "webcamera_uvc.h"

#endif

#define DP(format...) Kern::Printf(format)

//Describe UVC base.

/**

Constructor.

*/

DWebCameraUVCDescriptor::DWebCameraUVCDescriptor()

	{

	DP("DWebcameraUVCDescriptor::DWebcameraUVCDescriptor construct");

	}

/**

Destructor.

*/

DWebCameraUVCDescriptor::~DWebCameraUVCDescriptor()

	{

	DP("DWebcameraUVCDescriptor::DWebcameraUVCDescriptor destruct");

	}

/**

Describe UVC Descriptor.

@param		aDataInfo		[in]				DataInfo from lower layer.

@return		bDescriptor.

*/

TWebcameraUVCDescriptor DWebCameraUVCDescriptor::DescribeDescriptor(const TWebcameraDataInfo aDataInfo)

	{

	TWebcameraUVCDescriptor bDescriptor;

	return bDescriptor;

	}

//Describe UVC descriptor YUY2 class.

/**

Constructor.

*/

DWebCameraUVCDescribeDescriptorYUY2::DWebCameraUVCDescribeDescriptorYUY2()

	{

	DP("DWebCameraUVCDescribeDescriptorYUY2::DWebCameraUVCDescribeDescriptorYUY2 construct");

	}

/**

Destructor.

*/

DWebCameraUVCDescribeDescriptorYUY2::~DWebCameraUVCDescribeDescriptorYUY2()

	{

	DP("DWebCameraUVCDescribeDescriptorYUY2::DWebCameraUVCDescribeDescriptorYUY2 destruct");

	}

/**

Describe UVC Descriptor of YUY2 Format.

@param		aDataInfo		[in]					DataInfo from lower layer.

@return 	bDescriptor.

*/

TWebcameraUVCDescriptor DWebCameraUVCDescribeDescriptorYUY2::DescribeDescriptor(const TWebcameraDataInfo aDataInfo)

	{

	DP("DWebcameraUVCDescribeDescriptorYUY2::DescribeDescriptor Start");

	//Describe FormatDescriptor Part.

	TWebcameraUVCDescriptor bDescriptor;

	bDescriptor.iFormatDescriptor.iLength = 27;

	bDescriptor.iFormatDescriptor.iDescriptorType = KWebcameraSCVideoStreaming;

	bDescriptor.iFormatDescriptor.iDescriptorSubType = KWebcameraVSFormatUnconmpressed;

	//bFormatIndex : First and only format descriptor.

	//This field is set by the host.

	bDescriptor.iFormatDescriptor.iFormatIndex = 0x01;

	bDescriptor.iFormatDescriptor.iNumFrameDescriptor = KWebcameraVSFrameUncompressed;

	bDescriptor.iFormatDescriptor.iGuid = aDataInfo.iDataFortmat.iSubFormat;

	bDescriptor.iFormatDescriptor.iBitsPerPixel = aDataInfo.iVideoInfoHeader.iBmiHeader.iBitCount;

	//bDefaultFrameIndex : Default frame index is 1.

	bDescriptor.iFormatDescriptor.iDefaultFrameIndex = 0x01;

	bDescriptor.iFormatDescriptor.iAspectRatioX = 4;

	bDescriptor.iFormatDescriptor.iAspectRatioY = 3;

	//InterlaceFlags.		//VideoInfoHeader2 dwInterlaceFlags.

	//No interlaced stream.

	bDescriptor.iFormatDescriptor.iInterlaceFlags = 0x00;

	//0: No restrictions.

	bDescriptor.iFormatDescriptor.iCopyProtect = 0x00;

	//Describe FrameDescriptor Part.

	bDescriptor.iFrameDescriptor.iDescriptorType = KWebcameraSCVideoStreaming;

	bDescriptor.iFrameDescriptor.iDescriptorSubType = KWebcameraVSFrameUncompressed;

	//First and only frame descriptor.

	bDescriptor.iFrameDescriptor.iFrameIndex = 0x01;

	//Still images using capture method 0 are supported at this frame setting.D1: Fixed frame-rate.

	//D2~D7 reserved.

	bDescriptor.iFrameDescriptor.iCapabilities = 0x02;

	bDescriptor.iFrameDescriptor.iWidth = (TUint16)aDataInfo.iVideoInfoHeader.iBmiHeader.iWidth;

	bDescriptor.iFrameDescriptor.iHeight = (TUint16)aDataInfo.iVideoInfoHeader.iBmiHeader.iHeight;

	//iDwBitRate = 147456000 = 640 * 480 * 16 * 30(FPS).

	//bDescriptor.iFrameDescriptor.iMaxBitRate.

	bDescriptor.iFrameDescriptor.iMaxBitRate = aDataInfo.iVideoInfoHeader.iDwBitRate;

	//bDescriptor.iFrameDescriptor.iMinBitRate.

	bDescriptor.iFrameDescriptor.iMinBitRate = aDataInfo.iVideoInfoHeader.iDwBitRate;

	//bDescriptor.iFrameDescriptor.iMaxVideoFrameBufferSize.

	//max frame size is 640 * 480 * 2 = 614400.

	bDescriptor.iFrameDescriptor.iMaxVideoFrameBufferSize = aDataInfo.iVideoInfoHeader.iBmiHeader.iSizeImage;

	//bDescriptor.iFrameDescriptor.iDefaultFrameInterval.

	//147456000 / 640 / 480 / 16 = 30(FPS) -> 33.3ms -> 33,333.3ƒÊs -> 333333.3 * 100ns = 333333 = iAvgTimePerFrame.

	bDescriptor.iFrameDescriptor.iDefaultFrameInterval = (TUint32)aDataInfo.iVideoInfoHeader.iAvgTimePerFrame;

	//0: Continuous frame interval.

	bDescriptor.iFrameDescriptor.iFrameIntervalType = 0x00;

	//bDescriptor.iFrameDescriptor.iLength.

	if (bDescriptor.iFrameDescriptor.iFrameIntervalType == 0)

		{

		bDescriptor.iFrameDescriptor.iFrameInterval.iFrameInterval1 = (TUint32)aDataInfo.iVideoInfoHeader.iAvgTimePerFrame;

		//highest frame rate.

		bDescriptor.iFrameDescriptor.iFrameInterval.iFrameInterval2 = (TUint32)aDataInfo.iVideoInfoHeader.iAvgTimePerFrame;

		//lowest frame rate.

		bDescriptor.iFrameDescriptor.iFrameInterval.iFrameInterval3 = (TUint32)aDataInfo.iVideoInfoHeader.iAvgTimePerFrame;

		//Indicates granularity of frame interval range.

		bDescriptor.iFrameDescriptor.iLength = 38;

		//iFrameIntervalType = 0 : 38, > 0 : 26+(4*n).

		}

	return bDescriptor;

	}

//UVC heder class.

/**

Constructor.

*/

DWebCameraUVCHeader::DWebCameraUVCHeader()

	{

	DP("DWebCameraUVCHeader::DWebCameraUVCHeader construct");

	}

/**

Destructor.

*/

DWebCameraUVCHeader::~DWebCameraUVCHeader()

	{

	DP("DWebCameraUVCHeader::DWebCameraUVCHeader destruct");

	}

/**

Describe UVC Header.

@param	aDataInfo	[in]				Information of data from lower layer.

@return	bHeader							UVC Header descibed.

*/

TWebcameraUVCHeaderFormat DWebCameraUVCHeader::DescribeHeader(const TWebcameraDataInfo aDataInfo)

	{

	TWebcameraDataInfo bDataInfo = aDataInfo;

	TWebcameraUVCHeaderFormat bHeader;

	//Describe HeaderInfo to be included UVC Header.

	bHeader.iHeaderInfo = DescribeHeaderInfo(bDataInfo);

	//Describe HeaderLength to be included UVC Header if PTS was set.

	bHeader.iHeaderLength = DescribeHeaderLength(bDataInfo, bHeader.iHeaderInfo);

	//Describe PresentationTime to be included UVC Header.

	if ((bHeader.iHeaderInfo & KWebcameraPts) > 0)

		{

		bHeader.iPresentationTime = DescribePresentationTime(bDataInfo);

		}

	//Describe SourceClockReference to be included UVC Header if SCR was set.

	if ((bHeader.iHeaderInfo & KWebcameraScr) > 0)

		{

		bHeader.iSourceClockReference = DescribeSourceClockReference(bDataInfo);

		}

	return bHeader;

	}

/**

Describe HeaderInfo of UVC Header.

@param	aDataInfo					[in]	DataInfo get from lower layer.

@return	bHeaderInfo.

*/

TUint8 DWebCameraUVCHeader::DescribeHeaderInfo(const TWebcameraDataInfo aDataInfo)

	{

	TUint8 bHeaderInfo = 0x00;

//	bHeaderInfo |= KWebcameraEoh;

//	bHeaderInfo |= KWebcameraErr;

//	bHeaderInfo |= KWebcameraSti;

//	bHeaderInfo |= KWebcameraScr;

	//Case: Set PTS infomation.

	if (aDataInfo.iVideoInfoHeader.iAvgTimePerFrame != 0)

		{

		bHeaderInfo |= KWebcameraPts;

		}

//	bHeaderInfo |= KWebcameraEof;

	//Reversing FID.

	iFID = ~iFID;

	iFID &= KWebcameraFid;

	bHeaderInfo |= iFID;

	return bHeaderInfo;

	}

/**

Describe HeaderLength to be included UVC Header.

@param	aDataInfo		[in]								Information of data from lower layer.

		aHeaderInfo		[in]								HeaderInfo to be included UVC Header.

@return	bHeaderLength.

*/

TUint8 DWebCameraUVCHeader::DescribeHeaderLength(const TWebcameraDataInfo aDataInfo, TUint8 aHeaderInfo)

	{

	TUint8 bHeaderLength;

	bHeaderLength = 2;

	//Get information of PTS .

	if ((aHeaderInfo & KWebcameraPts) > 0)

		{

		bHeaderLength += 4;

		}

	//Get information of SCR.

	if ((aHeaderInfo & KWebcameraScr) > 0)

		{

		bHeaderLength += 6;

		}

	return bHeaderLength;

	}

/**

Describe PresentationTime to be included UVC Header.

@param	@param	aDataInfo						[in]	Information of Data from lower layer.

@return	bPresentationTime.

*/

TUint32 DWebCameraUVCHeader::DescribePresentationTime(const TWebcameraDataInfo aDataInfo)

	{

	TUint32 bPresentationTime;

	//Substitution information of AvgTimePerFrame for PresentationTime.

	bPresentationTime = (TUint32)aDataInfo.iVideoInfoHeader.iAvgTimePerFrame;

	return bPresentationTime;

	}

/**

Describe SourceClockReference to be included UVC Header.

@param	aDataInfo					[in]	Information of data from lower layer.

@return	bSourceClockReference.

*/

TWebcameraUVCSourceClockReference DWebCameraUVCHeader::DescribeSourceClockReference(const TWebcameraDataInfo aDataInfo)

	{

	TWebcameraUVCSourceClockReference bSourceClockReference;

	//Substitute information of TokenCounter for iTokenCounter.

	bSourceClockReference.iTokenCounter = 0x0000;

	bSourceClockReference.iTokenCounter &= KWebcameraTokenCounter;

	//Substitute information of SourceTimeClock for iSourceTimeClock.

//	bSourceClockReference.iSourceTimeClock = (TUint32) aSourceTimeClock;

	return bSourceClockReference;

	}

//Describe class.

/**

Constructor.

*/

DWebCameraDescribe::DWebCameraDescribe()

	{

	DP("DWebCameraDescribe::DWebCameraDescribe construct");

	}

/**

Destructor.

*/

DWebCameraDescribe::~DWebCameraDescribe()

	{

	delete iDescribe;

	DP("DWebCameraDescribe::DWebCameraDescribe destruct");

	}

/**

Parse iDataInfo from lower layer and describe UVC Header and Descriptor.

@param	aDataInfo					[in]	Information of data from lower layer.

@return	bUVC.

*/

TWebcameraUVC DWebCameraDescribe::ParseDataInfo(const TWebcameraDataInfo aDataInfo)

	{

	TWebcameraDataInfo bDataInfo = aDataInfo;

	TWebcameraUVC bUvc;

	//Describe UVC Header.

	DWebCameraUVCHeader* bHeader;

	bHeader = new DWebCameraUVCHeader;

	bUvc.iUVCHeader = bHeader->DescribeHeader(bDataInfo);

	delete bHeader;

	//If MajorFormat equal KWebcameraVideoStream, this format is VideoStream.

	if (bDataInfo.iDataFortmat.iMajorFormat.iData1 == KWebcameraVideoStream)

		{

		//Discriminate by SubFormat.

		switch (bDataInfo.iDataFortmat.iSubFormat.iData1)

			{

			//Case of YUY2 Format.

			case KWebcameraYuy2:

				iDescribe = new DWebCameraUVCDescribeDescriptorYUY2;

				break;

			//Case of default.

			default:

				//No format that discriminated.

				break;

			}

		//Describe UVC Descriptor.

		bUvc.iUVCDescriptor = iDescribe->DescribeDescriptor(bDataInfo);

		}

	return bUvc;

	}