edge.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: edge.cpp,v 1.2.32.1 2004/07/09 02:00:18 hubbe Exp $
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#include "hxtypes.h"
#include "hxcom.h"
#include "edge.h"

#include "hlxclib/math.h"

// Lookup tables to perform luma image enhancement
int soft_core_2d[LUT_LENGTH];
int clip_softcore_post[CLIP_TABLE_LENGTH];
int soft_core_2d88[LUT_LENGTH];

#define lut_soft_core_2d (soft_core_2d+OFFSET_SOFTCORE)
#define lut_soft_core_2d88 (soft_core_2d88+OFFSET_SOFTCORE)
#define lut_clip_softcore_post (clip_softcore_post+OFFSET_CLIP_SOFTCORE)

float g_fCurrentSharpness = 0.0;
INT16 g_nCurrentExpand = 0 ;

void HXEXPORT
ENTRYPOINT(SetSharpnessAdjustments)(float Sharpness, INT16 nExpand)
{

    //Initialize edge enhancemnt lookup table
    //adjust the Sharpness parameter input range [-1,1] to output range [0,MAX_B]
    g_fCurrentSharpness = Sharpness;
    g_nCurrentExpand = nExpand;

    Sharpness += 1.0;
    
    if(nExpand)
    {
	Sharpness *= (ZOOM_BOOST*MAX_B/2.0);
    }
    else
    {
	Sharpness *= (MAX_B/2.0);
    }

    Inittriangleluts(DEFT_C,DEFT_A,Sharpness);
   

}

void HXEXPORT
ENTRYPOINT(GetSharpnessAdjustments)(float* pSharpness, INT16* pnExpand)
{
    *pSharpness = g_fCurrentSharpness;
    *pnExpand	= g_nCurrentExpand;
}

void HXEXPORT
ENTRYPOINT(Enhance)(UCHAR *yuv420in, INT32 inheight, INT32  inwidth, INT32 pitchSrc, float Sharpness)
{
    int     row, curBuf, prevBuf;
    unsigned char  *pLuma;
    static int  helper[2][2][HELPER_MAXLEN];    


    static int first_fl=1;
    float tolerance=(float)0.1;
    int tmp1;
	
    if ((inwidth > HELPER_MAXLEN) || (inheight <16))
	{
		return ;
	}

    //if Sharpness is -1.0 (or close) do not do any edge enhancement
    if(((Sharpness+1.0)<tolerance) && ((Sharpness+1.0)>-tolerance))
    {
	return ;
    }

    if(first_fl==1)
    {		
	//Initialize constant edge enhancemnt lookup table to defaults for the first time
	/*Inittriangleluts(DEFT_C,DEFT_A,DEFT_B);*/
	Inittrianglelutsconst();
	//initialize clipping table
	Initcliplut();
	first_fl=0;
	}

    curBuf = 0;         // Point to "current" line buffer
    pLuma = yuv420in;    // Point to beginning of current line

    DiffNonLin2Dconst( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
    DiffNonLin2Dconst( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	

    for (row = 1; row < inheight-9; row=row+8) {

	//(1)
	prevBuf = curBuf;   // Point to previous line buffer
	curBuf ^= 1;        // Add 1 modulo 2
	pLuma +=pitchSrc;   // Advance pointer to next row
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
        DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(2)
	prevBuf = curBuf;   
        curBuf ^= 1;       
	pLuma +=pitchSrc;  
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(3)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;  
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(4)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;   
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(5)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;   
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(6)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//2edge pixels------------------

	//(7)
        prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;
	DiffNonLin2Dconst( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Dconst( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
        Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(8)
        prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;
	DiffNonLin2Dconst( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Dconst( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
        Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    }

    tmp1=(inheight-((inheight>>3)<<3))-1;
    switch(tmp1)
    {
    case 6:
	 //(1)
	prevBuf = curBuf;   
	curBuf ^= 1;        
	pLuma +=pitchSrc;		
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    case 5:
	//(2)
	prevBuf = curBuf;  
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    case 4:
	//(3)
	prevBuf = curBuf;  
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    case 3:
	//(4)
	prevBuf = curBuf;   
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );
    
    case 2:
	//(5)
	prevBuf = curBuf;   
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    case 1:
	//(6)
	prevBuf = curBuf;   
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2D( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2D( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

    case 0:
	break;
    }

    return ;
}

void HXEXPORT
ENTRYPOINT(EnhanceUniform)(UCHAR *yuv420in, INT32 inheight, INT32  inwidth, INT32 pitchSrc, float Sharpness)
{
    int     row, curBuf, prevBuf;
    unsigned char  *pLuma;
    static int  helper[2][2][HELPER_MAXLEN];    

    static int first_fl=1;
    float tolerance=(float)0.1;
    int tmp1;
	
    
    if ((inwidth > HELPER_MAXLEN) || (inheight <16))
    {
	return ;	
    }

    //if Sharpness is -1.0 (or close) don not do any edge enhancement
    if(((Sharpness+1.0)<tolerance) && ((Sharpness+1.0)>-tolerance))
    {
	return ;
    }

    if(first_fl==1)
    {		
	//Initialize edge enhancemnt lookup table to defaults for the first time
	Inittriangleluts(DEFT_C,DEFT_A,DEFT_B);
	//initialize clipping table
	Initcliplut();
	first_fl=0;
    }

    curBuf = 0;         // Point to "current" line buffer
    pLuma = yuv420in;    // Point to beginning of current line

    DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
    DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	

    for (row = 1; row < inheight-9; row=row+8) {

	//(1)
	prevBuf = curBuf;   // Point to previous line buffer
        curBuf ^= 1;        // Add 1 modulo 2
	pLuma +=pitchSrc;   // Advance pointer to next row
        DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
        DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );


	//(2)
	prevBuf = curBuf;   
	curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(3)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );


	//(4)
	prevBuf = curBuf;   
        curBuf ^= 1;       
	pLuma +=pitchSrc; 
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(5)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(6)
	prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc; 
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
	Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );


	//2edge pixels------------------

	//(7)
        prevBuf = curBuf;  
        curBuf ^= 1;        
	pLuma +=pitchSrc;
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
        Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );

	//(8)
        prevBuf = curBuf;   
        curBuf ^= 1;        
	pLuma +=pitchSrc;
	DiffNonLin2Duniform( &pLuma[pitchSrc], &pLuma[1], helper[curBuf][0], inwidth-1 );
	DiffNonLin2Duniform( &pLuma[pitchSrc+1], &pLuma[0], helper[curBuf][1], inwidth-1 );
        Add2DHelper( (int *)helper[curBuf], (int *)helper[prevBuf], &pLuma[1], inwidth-2 );