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📄 motest.cpp

📁 此源码是在VC平台下,实现MPEG4编解码的源码
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/*************************************************************************

This software module was originally developed by 

	Ming-Chieh Lee (mingcl@microsoft.com), Microsoft Corporation
	Wei-ge Chen (wchen@microsoft.com), Microsoft Corporation
	Bruce Lin (blin@microsoft.com), Microsoft Corporation
	(date: March, 1996)
and edited by
        Wei Wu (weiwu@stallion.risc.rockwell.com) Rockwell Science Center
and edited by Xuemin Chen (xchen@gi.com) General Instrument Corp.)

in the course of development of the MPEG-4 Video (ISO/IEC 14496-2). 
This software module is an implementation of a part of one or more MPEG-4 Video tools 
as specified by the MPEG-4 Video. 
ISO/IEC gives users of the MPEG-4 Video free license to this software module or modifications 
thereof for use in hardware or software products claiming conformance to the MPEG-4 Video. 
Those intending to use this software module in hardware or software products are advised that its use may infringe existing patents. 
The original developer of this software module and his/her company, 
the subsequent editors and their companies, 
and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation. 
Copyright is not released for non MPEG-4 Video conforming products. 
Microsoft retains full right to use the code for his/her own purpose, 
assign or donate the code to a third party and to inhibit third parties from using the code for non <MPEG standard> conforming products. 
This copyright notice must be included in all copies or derivative works. 

Copyright (c) 1996, 1997.


Module Name:

	motEst.cpp

Abstract:

	Motion estimation routines.

Revision History:
	Dec 20, 1997:	Interlaced tools added by NextLevel Systems
	May 9, 1999:	tm5 rate control by DemoGraFX, duhoff@mediaone.net

*************************************************************************/

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <iostream.h>

#include "typeapi.h"
#include "codehead.h"
#include "global.hpp"
#include "entropy/bitstrm.hpp"
#include "entropy/entropy.hpp"
#include "entropy/huffman.hpp"
#include "mode.hpp"
#include "vopses.hpp"
#include "vopseenc.hpp"

#ifdef __MFC_
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

#define new DEBUG_NEW				   
#endif // __MFC_

#define FAVORZERO		129
#define FAVOR_DIRECT	129
#define FAVOR_INTER		512
#define FAVOR_16x16		129
#define FAVOR_FIELD		 65			// P-VOP favor field over 8x8 due to fewer MVs

inline Int minimum (Int a, Int b, Int c, Int d)
{
	if (a <= b && a <= c && a <= d)
		return a;
	else if (b <= a && b <= c && b <= d)
		return b;
	else if (c <= a && c <= b && c <= d)
		return c;
	else
		return d;
}

Void CVideoObjectEncoder::motionEstPVOP ()
{
	m_iMAD = 0;
	CoordI y = 0; 
	CMBMode* pmbmd = m_rgmbmd;
	CMotionVector* pmv = m_rgmv;
	const PixelC* ppxlcOrigY = m_pvopcOrig->pixelsBoundY ();
	const PixelC* ppxlcRefY = (m_volmd.bOriginalForME ? m_pvopcRefOrig0 : m_pvopcRefQ0)->pixelsY () + m_iStartInRefToCurrRctY;
	Int iMBX, iMBY;

	if (m_iMVFileUsage == 1)
		readPVOPMVs();
	for (iMBY = 0; iMBY < m_iNumMBY; iMBY++, y += MB_SIZE) {
		const PixelC* ppxlcOrigMBY = ppxlcOrigY;
		const PixelC* ppxlcRefMBY = ppxlcRefY;
		CoordI x = 0;
		for (iMBX = 0; iMBX < m_iNumMBX; iMBX++, x += MB_SIZE)	{
#ifdef __TRACE_AND_STATS_
			m_pbitstrmOut->trace (CSite (iMBX, iMBY), "MB_X_Y");
#endif // __TRACE_AND_STATS_
			if (m_volmd.volType == ENHN_LAYER && m_vopmd.iRefSelectCode == 3)	{
				motionEstMB_PVOP (x, y, pmv, pmbmd);
			}
			else {
				copyToCurrBuffY (ppxlcOrigMBY);
				pmbmd->m_bFieldDCT=0;
				m_iMAD += motionEstMB_PVOP (x, y, pmv, pmbmd, ppxlcRefMBY);
			}

#ifdef __TRACE_AND_STATS_
			m_pbitstrmOut->trace (CSite (iMBX, iMBY), "MB_X_Y");
			m_pbitstrmOut->trace (pmv [0], "MV16");
			m_pbitstrmOut->trace (pmv [1], "MV8");
			m_pbitstrmOut->trace (pmv [2], "MV8");
			m_pbitstrmOut->trace (pmv [3], "MV8");
			m_pbitstrmOut->trace (pmv [4], "MV8");
// INTERLACE
			if(pmbmd->m_bForwardTop)
				m_pbitstrmOut->trace (pmv [6], "MV16x8");
			else
				m_pbitstrmOut->trace (pmv [5], "MV16x8");
			if(pmbmd->m_bForwardBottom)
				m_pbitstrmOut->trace (pmv [8], "MV16x8");
			else
				m_pbitstrmOut->trace (pmv [7], "MV16x8");
// ~INTERLACE
#endif // __TRACE_AND_STATS_
			pmbmd++;
			pmv += PVOP_MV_PER_REF_PER_MB;
			ppxlcOrigMBY += MB_SIZE;
			ppxlcRefMBY += MB_SIZE;
		}
		ppxlcOrigY += m_iFrameWidthYxMBSize;
		ppxlcRefY += m_iFrameWidthYxMBSize;
	}
	if (m_iMVFileUsage == 2)
		writePVOPMVs();
}

Void CVideoObjectEncoder::motionEstPVOP_WithShape ()
{
	m_iMAD = 0;
	CoordI y = m_rctCurrVOPY.top; 
	CMBMode* pmbmd = m_rgmbmd;
	CMotionVector* pmv = m_rgmv;
	const PixelC* ppxlcOrigY = m_pvopcOrig->pixelsBoundY ();
	const PixelC* ppxlcOrigBY = m_pvopcOrig->pixelsBoundBY ();
	const PixelC* ppxlcRefY = (m_volmd.bOriginalForME ? m_pvopcRefOrig0 : m_pvopcRefQ0)->pixelsY () + m_iStartInRefToCurrRctY;
	Int iMBX, iMBY;

	if (m_iMVFileUsage == 1)
		readPVOPMVs();
	for (iMBY = 0; iMBY < m_iNumMBY; iMBY++, y += MB_SIZE) {
		const PixelC* ppxlcOrigMBY = ppxlcOrigY;
		const PixelC* ppxlcOrigMBBY = ppxlcOrigBY;
		const PixelC* ppxlcRefMBY = ppxlcRefY;
		CoordI x = m_rctCurrVOPY.left;
		for (iMBX = 0; iMBX < m_iNumMBX; iMBX++, x += MB_SIZE)	{
#ifdef __TRACE_AND_STATS_
			if(m_volmd.bShapeOnly==FALSE)
				m_pbitstrmOut->trace (CSite (iMBX, iMBY), "MB_X_Y");
#endif // __TRACE_AND_STATS_
			copyToCurrBuffWithShapeY (ppxlcOrigMBY, ppxlcOrigMBBY);
			decideTransparencyStatus (pmbmd, m_ppxlcCurrMBBY);
			if(m_volmd.bShapeOnly==FALSE)
			{
				if (pmbmd->m_rgTranspStatus [0] == NONE)
				{
// new changes X. Chen
					pmbmd->m_bFieldDCT=0;
					m_iMAD += motionEstMB_PVOP (x, y, pmv, pmbmd, ppxlcRefMBY);
				}
				else if (pmbmd->m_rgTranspStatus [0] == PARTIAL)
				{
// new changes X. Chen
					pmbmd->m_bFieldDCT=0;
					m_iMAD += motionEstMB_PVOP_WithShape (x, y, pmv, pmbmd, ppxlcRefMBY);
				}

#ifdef __TRACE_AND_STATS_
				m_pbitstrmOut->trace (CSite (iMBX, iMBY), "MB_X_Y");
				m_pbitstrmOut->trace (pmv [0], "MV16");
				m_pbitstrmOut->trace (pmv [1], "MV8");
				m_pbitstrmOut->trace (pmv [2], "MV8");
				m_pbitstrmOut->trace (pmv [3], "MV8");
				m_pbitstrmOut->trace (pmv [4], "MV8");
// INTERLACE
	// new changes
				if(pmbmd->m_bFieldDCT) {
					if(pmbmd->m_bForwardTop)
						m_pbitstrmOut->trace (pmv [6], "MV16x8");
					else
						m_pbitstrmOut->trace (pmv [5], "MV16x8");
					if(pmbmd->m_bForwardBottom)
						m_pbitstrmOut->trace (pmv [8], "MV16x8");
					else
						m_pbitstrmOut->trace (pmv [7], "MV16x8");
				}
	// end of new changes
// ~INTERLACE
#endif // __TRACE_AND_STATS_
			}
			pmbmd++;
			pmv += PVOP_MV_PER_REF_PER_MB;
			ppxlcOrigMBY += MB_SIZE;
			ppxlcOrigMBBY += MB_SIZE;
			ppxlcRefMBY += MB_SIZE;
		}
		ppxlcOrigY += m_iFrameWidthYxMBSize;
		ppxlcOrigBY += m_iFrameWidthYxMBSize;
		ppxlcRefY += m_iFrameWidthYxMBSize;
	}
	if (m_iMVFileUsage == 2)
		writePVOPMVs();
}

Void CVideoObjectEncoder::motionEstBVOP ()
{
	if (m_iMVFileUsage == 1)
		readBVOPMVs();
	m_iMAD = 0;
	CoordI y = 0; // frame-based, always start from 0
	CMBMode* pmbmd = m_rgmbmd;
	const CMBMode* pmbmdRef = NULL;
	const CMotionVector* pmvRef = NULL;		//mv in ref frame (for direct mode)

	if(m_bCodedFutureRef!=FALSE)
	{	
		pmbmdRef = m_rgmbmdRef;
		pmvRef = m_rgmvRef;
	}

	CMotionVector* pmv = m_rgmv;
	CMotionVector* pmvBackward = m_rgmvBackward;
	const PixelC* ppxlcOrigY = m_pvopcOrig->pixelsBoundY ();
	const PixelC* ppxlcRef0Y = m_pvopcRefQ0->pixelsY () + m_iStartInRefToCurrRctY;
	const PixelC* ppxlcRef1Y = m_pvopcRefQ1->pixelsY () + m_iStartInRefToCurrRctY;
	Int iMBX, iMBY;
	for (iMBY = 0; iMBY < m_iNumMBY; iMBY++, y += MB_SIZE) {
		const PixelC* ppxlcOrigMBY = ppxlcOrigY;
		const PixelC* ppxlcRef0MBY = ppxlcRef0Y;
		const PixelC* ppxlcRef1MBY = ppxlcRef1Y;
		CoordI x = 0; // frame-based, always start from 0
		for (iMBX = 0; iMBX < m_iNumMBX; iMBX++, x += MB_SIZE) {
			pmbmd->m_dctMd = INTER; // B-VOP is always INTER
			pmbmd->m_bhas4MVForward = pmbmd->m_bhas4MVBackward = FALSE;  //out encoder doesn't support 4 mv in bvop (not even direct mode)
			// TPS FIX
			if(m_volmd.volType == ENHN_LAYER && (m_vopmd.iRefSelectCode != 3 || m_volmd.iEnhnType == 1)){
				pmbmd->m_bColocatedMBSkip= FALSE;
				copyToCurrBuffY(ppxlcOrigMBY); 
				// begin: modified by Sharp(98/3/10)
				if ( m_vopmd.iRefSelectCode == 0 )
					motionEstMB_BVOP (x, y, pmv, pmvBackward, pmbmd, ppxlcRef0MBY, ppxlcRef1MBY);
				else
					motionEstMB_BVOP (x, y, pmv, pmvBackward, pmbmd, pmbmdRef, pmvRef, ppxlcRef0MBY, ppxlcRef1MBY, TRUE);
				// end: modified by Sharp(98/3/10)
			}
			else {
				pmbmd->m_bColocatedMBSkip = (pmbmdRef==NULL) ? FALSE : pmbmdRef->m_bSkip;
				if (pmbmd->m_bColocatedMBSkip) {
					pmbmd->m_bSkip = TRUE;
					memset (pmv, 0, BVOP_MV_PER_REF_PER_MB * sizeof (CMotionVector));
					pmbmd->m_mbType = FORWARD; // can be set to FORWARD mode since the result is the same
				}
				else {
					copyToCurrBuffY (ppxlcOrigMBY);
					m_iMAD += m_vopmd.bInterlace ?
                        motionEstMB_BVOP_Interlaced (x, y, pmv, pmvBackward, pmbmd,
                                                     pmbmdRef, pmvRef, ppxlcRef0MBY, ppxlcRef1MBY, pmbmdRef!=NULL) :
                        motionEstMB_BVOP            (x, y, pmv, pmvBackward, pmbmd,
                                                     pmbmdRef, pmvRef, ppxlcRef0MBY, ppxlcRef1MBY, pmbmdRef!=NULL);
				}
			}
			pmbmd++;
			pmv         += BVOP_MV_PER_REF_PER_MB;
			pmvBackward += BVOP_MV_PER_REF_PER_MB;

			if(m_bCodedFutureRef!=FALSE)
			{	
				pmbmdRef++;
				pmvRef += PVOP_MV_PER_REF_PER_MB;
			}

			ppxlcOrigMBY += MB_SIZE;
			ppxlcRef0MBY += MB_SIZE;
			ppxlcRef1MBY += MB_SIZE;
		}
		ppxlcOrigY += m_iFrameWidthYxMBSize;
		ppxlcRef0Y += m_iFrameWidthYxMBSize;
		ppxlcRef1Y += m_iFrameWidthYxMBSize;
	}
	if (m_iMVFileUsage == 2)
		writeBVOPMVs();
}

Void CVideoObjectEncoder::motionEstBVOP_WithShape ()
{
	m_iMAD = 0;
	CoordI y = m_rctCurrVOPY.top; 
	CMBMode* pmbmd = m_rgmbmd;
	CMotionVector* pmv = m_rgmv;
	CMotionVector* pmvBackward = m_rgmvBackward;

	Bool bColocatedMBExist;
	const PixelC* ppxlcOrigY = m_pvopcOrig->pixelsBoundY ();
	const PixelC* ppxlcOrigBY = m_pvopcOrig->pixelsBoundBY ();
	const PixelC* ppxlcRef0Y = m_pvopcRefOrig0->pixelsY () + m_iStartInRefToCurrRctY;
	const PixelC* ppxlcRef1Y = m_pvopcRefOrig1->pixelsY () + m_iStartInRefToCurrRctY;
	Int iMBX, iMBY;

	if (m_iMVFileUsage == 1)
		readBVOPMVs();

	for (iMBY = 0; iMBY < m_iNumMBY; iMBY++, y += MB_SIZE) {
		const PixelC* ppxlcOrigMBY = ppxlcOrigY;
		const PixelC* ppxlcOrigMBBY = ppxlcOrigBY;
		const PixelC* ppxlcRef0MBY = ppxlcRef0Y;
		const PixelC* ppxlcRef1MBY = ppxlcRef1Y;
		CoordI x = m_rctCurrVOPY.left;
		for (iMBX = 0; iMBX < m_iNumMBX; iMBX++, x += MB_SIZE) {
			pmbmd->m_dctMd = INTER; // B-VOP is always INTER
			pmbmd->m_bhas4MVForward = pmbmd->m_bhas4MVBackward = FALSE;
			copyToCurrBuffWithShapeY (ppxlcOrigMBY, ppxlcOrigMBBY);
			decideTransparencyStatus (pmbmd, m_ppxlcCurrMBBY);
			if (pmbmd->m_rgTranspStatus [0] != ALL) {
				const CMBMode* pmbmdRef;
				const CMotionVector* pmvRef;
				findColocatedMB (iMBX, iMBY, pmbmdRef, pmvRef);
				pmbmd->m_bColocatedMBSkip = (pmbmdRef!=NULL && pmbmdRef->m_bSkip);
				// TPS FIX
				if(m_volmd.volType == ENHN_LAYER && (m_vopmd.iRefSelectCode != 3 || m_volmd.iEnhnType == 1)) {
					pmbmd->m_bColocatedMBSkip= FALSE;
					bColocatedMBExist = (pmbmdRef!=NULL);
					if (pmbmd->m_rgTranspStatus [0] == NONE) {
						m_iMAD += motionEstMB_BVOP (
							x, y, 
							pmv, pmvBackward,
							pmbmd, 
							pmbmdRef, pmvRef,
							ppxlcRef0MBY, ppxlcRef1MBY,
							bColocatedMBExist
						);
					}
					else if (pmbmd->m_rgTranspStatus [0] == PARTIAL) {
						m_iMAD += motionEstMB_BVOP_WithShape (
							x, y, 
							pmv, pmvBackward,
							pmbmd, 
							pmbmdRef, pmvRef,
							ppxlcRef0MBY, ppxlcRef1MBY,
							bColocatedMBExist
						);
					}
				} 
				else {
					if (pmbmd->m_bColocatedMBSkip) {
						pmbmd->m_bSkip = TRUE;
						memset (pmv, 0, BVOP_MV_PER_REF_PER_MB * sizeof (CMotionVector));
						m_statsMB.nDirectMB++;
						pmbmd->m_mbType = FORWARD;
					}
					else {
						bColocatedMBExist = (pmbmdRef!=NULL);
						if (pmbmd->m_rgTranspStatus [0] == NONE) {
// new changes
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