edge.cpp
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上传日期:2007-06-06
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文件大小:22k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #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 );
- }
- tmp1=(inheight-((inheight>>3)<<3))-1;
- switch(tmp1)
- {
- case 6:
- //(1)
- 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 );
- case 5:
- //(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 );
- case 4:
- //(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 );
- case 3:
- //(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 );
- case 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 );
- case 1:
- //(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 );
- case 0:
- break;
- }
- return ;
- }
- int Add2DHelper( int *cur, int *prev, unsigned char *pic, int n )
- {
- int i;
- int tmp=n>>1;
- int tmp1=n-((n>>1)<<1);
- if(n<2)
- {
- return 1;
- }
- for (i = 0; i < n-1; i=i+2)
- {
- pic[i] = clip_softcore_post[OFFSET_CLIP_SOFTCORE + pic[i]
- + prev[i+1]
- + prev[i + HELPER_MAXLEN]
- - cur[i]
- - cur[i+1 + HELPER_MAXLEN] ];
- pic[i+1] = clip_softcore_post[OFFSET_CLIP_SOFTCORE + pic[i+1]
- + prev[i+2]
- + prev[i+1+ HELPER_MAXLEN]
- - cur[i+1]
- - cur[i+2 + HELPER_MAXLEN] ];
- }
- if(tmp1)
- {
- pic[n-1] = clip_softcore_post[OFFSET_CLIP_SOFTCORE + pic[n-1]
- + prev[n]
- + prev[n-1+ HELPER_MAXLEN]
- - cur[n-1]
- - cur[n + HELPER_MAXLEN] ];
- }
- return 1;
- }
- int DiffNonLin2D( unsigned char* pos, unsigned char* neg, int* out, int n )
- {
- int i;
- int tmpv;
-
- if(n<16)
- {
- return 1;
- }
- out[0]=lut_soft_core_2d[pos[0] - neg[0]];
-
- for (i = 1; i < n-9; i=i+8)
- {
- register int tmp0, tmp1;
- tmp0 = pos[i] - neg[i];
- tmp1 = pos[i+1] - neg[i+1];
- out[i]=lut_soft_core_2d[tmp0];
- out[i+1]=lut_soft_core_2d[tmp1];
- tmp0 = pos[i+2] - neg[i+2];
- tmp1 = pos[i+3] - neg[i+3];
- out[i+2]=lut_soft_core_2d[tmp0];
- out[i+3]=lut_soft_core_2d[tmp1];
-
- tmp0 = pos[i+4] - neg[i+4];
- tmp1 = pos[i+5] - neg[i+5];
- out[i+4]=lut_soft_core_2d[tmp0];
- out[i+5]=lut_soft_core_2d[tmp1];
- tmp0 = pos[i+6] - neg[i+6];
- tmp1 = pos[i+7] - neg[i+7];
- out[i+6]=lut_soft_core_2d88[tmp0];
- out[i+7]=lut_soft_core_2d88[tmp1];
- }
-
- tmpv=(n-((n>>3)<<3))-1;
-
- switch(tmpv)
- {
- case 6:
- out[n-6]=lut_soft_core_2d[pos[n-6]-neg[n-6]];
- case 5:
- out[n-5]=lut_soft_core_2d[pos[n-5]-neg[n-5]];
- case 4:
- out[n-4]=lut_soft_core_2d[pos[n-4]-neg[n-4]];
- case 3:
- out[n-3]=lut_soft_core_2d[pos[n-3]-neg[n-3]];
- case 2:
- out[n-2]=lut_soft_core_2d[pos[n-2]-neg[n-2]];
- case 1:
- out[n-1]=lut_soft_core_2d[pos[n-1]-neg[n-1]];
- case 0:
- break;
- }
-
- return 1;
- }
- int DiffNonLin2Duniform( unsigned char* pos, unsigned char* neg, int* out, int n )
- {
- int i;
- int tmpv;
- if(n<16)
- {
- return 1;
- }
- out[0]=lut_soft_core_2d[pos[0] - neg[0]];
- for (i = 1; i < n-9; i=i+8)
- {
- register int tmp0, tmp1;
- tmp0 = pos[i] - neg[i];
- tmp1 = pos[i+1] - neg[i+1];
- out[i]=lut_soft_core_2d[tmp0];
- out[i+1]=lut_soft_core_2d[tmp1];
- tmp0 = pos[i+2] - neg[i+2];
- tmp1 = pos[i+3] - neg[i+3];
- out[i+2]=lut_soft_core_2d[tmp0];
- out[i+3]=lut_soft_core_2d[tmp1];
-
- tmp0 = pos[i+4] - neg[i+4];
- tmp1 = pos[i+5] - neg[i+5];
- out[i+4]=lut_soft_core_2d[tmp0];
- out[i+5]=lut_soft_core_2d[tmp1];
- tmp0 = pos[i+6] - neg[i+6];
- tmp1 = pos[i+7] - neg[i+7];
- out[i+6]=lut_soft_core_2d[tmp0];
- out[i+7]=lut_soft_core_2d[tmp1];
- }
- tmpv=(n-((n>>3)<<3))-1;
-
- switch(tmpv)
- {
- case 6:
- out[n-6]=lut_soft_core_2d[pos[n-6]-neg[n-6]];
- case 5:
- out[n-5]=lut_soft_core_2d[pos[n-5]-neg[n-5]];
- case 4:
- out[n-4]=lut_soft_core_2d[pos[n-4]-neg[n-4]];
- case 3:
- out[n-3]=lut_soft_core_2d[pos[n-3]-neg[n-3]];
- case 2:
- out[n-2]=lut_soft_core_2d[pos[n-2]-neg[n-2]];
- case 1:
- out[n-1]=lut_soft_core_2d[pos[n-1]-neg[n-1]];
- case 0:
- break;
- }
-
- return 1;
- }
- int DiffNonLin2Dconst( unsigned char* pos, unsigned char* neg, int* out, int n )
- {
- int i;
- int tmpv;
- if(n<16)
- {
- return 1;
- }
- out[0]=lut_soft_core_2d88[pos[0] - neg[0]];
- for (i = 1; i < n-9; i=i+8)
- {
- register int tmp0, tmp1;
- tmp0 = pos[i] - neg[i];
- tmp1 = pos[i+1] - neg[i+1];
- out[i]=lut_soft_core_2d88[tmp0];
- out[i+1]=lut_soft_core_2d88[tmp1];
- tmp0 = pos[i+2] - neg[i+2];
- tmp1 = pos[i+3] - neg[i+3];
- out[i+2]=lut_soft_core_2d88[tmp0];
- out[i+3]=lut_soft_core_2d88[tmp1];
-
- tmp0 = pos[i+4] - neg[i+4];
- tmp1 = pos[i+5] - neg[i+5];
- out[i+4]=lut_soft_core_2d88[tmp0];
- out[i+5]=lut_soft_core_2d88[tmp1];
- tmp0 = pos[i+6] - neg[i+6];
- tmp1 = pos[i+7] - neg[i+7];
- out[i+6]=lut_soft_core_2d88[tmp0];
- out[i+7]=lut_soft_core_2d88[tmp1];
- }
-
- tmpv=(n-((n>>3)<<3))-1;
-
- switch(tmpv)
- {
- case 6:
- out[n-6]=lut_soft_core_2d88[pos[n-6]-neg[n-6]];
- case 5:
- out[n-5]=lut_soft_core_2d88[pos[n-5]-neg[n-5]];
- case 4:
- out[n-4]=lut_soft_core_2d88[pos[n-4]-neg[n-4]];
- case 3:
- out[n-3]=lut_soft_core_2d88[pos[n-3]-neg[n-3]];
- case 2:
- out[n-2]=lut_soft_core_2d88[pos[n-2]-neg[n-2]];
- case 1:
- out[n-1]=lut_soft_core_2d88[pos[n-1]-neg[n-1]];
- case 0:
- break;
- }
-
-
- return 1;
- }
- int Inittriangleluts(float c, float a, float b)
- {
- int i;
-
- //nonlinearity triangle lut
- for (i=1; i<256; i++)
- soft_core_2d[i+255] = (int)soft_triangle_lut_2d((float)i,c,a,b);
- soft_core_2d[255+(int)(c/2)] =int(-a);
- soft_core_2d[511-int((255-c)/2)]=int(b);
- for (i=0; i<255; i++)
- soft_core_2d[i] = -soft_core_2d[510-i];
- soft_core_2d[255]=0;
- soft_core_2d[0]=0;
- soft_core_2d[510]=0;
- return 1;
- }
- int Inittrianglelutsconst(void)
- {
- int i;
- //initialize a second lut which has c=50,a=0,b=40 this will be used for 8x8 block boundaries always
- for (i=1; i<256; i++)
- soft_core_2d88[i+255] = (int)soft_triangle_lut_2d((float)i,(float)CONST_C,(float)CONST_A,(float)CONST_B);
- soft_core_2d88[255+(int)(CONST_C/2)] =-CONST_A;
- soft_core_2d88[511-int((255-CONST_C)/2)]=40;
- for (i=0; i<255; i++)
- soft_core_2d88[i] = -soft_core_2d88[510-i];
- soft_core_2d88[255]=0;
- soft_core_2d88[0]=0;
- soft_core_2d88[510]=0;
- return 1;
- }
- int soft_triangle_lut_2d(float input, float c, float a, float b)
- {
- float y;
- /*assumes the ranges of input,a,b,c are already clipped*/
- if(input>=0 && input<(c/2))
- y=-(input*a)/(c/2);
- else if(input>=c/2 && input<c)
- y=-((c-input)*a)/(c/2);
- else if(input>=c && input<((255+c)/2))
- y=((input-c)*b)/((255-c)/2);
- else if(input>=((255+c)/2) && input <=255)
- y=((255-input)*b)/((255-c)/2);
- return((int)y);
- }
- void Initcliplut(void)
- {
- int i;
- //clipping lut
- //assumes a and b can have a max value 60
- for (i=0; i<319; i++)
- clip_softcore_post[i] = 0;
- clip_softcore_post[319] = 0;
- for (i=1; i<256; i++)
- clip_softcore_post[i+319] = i;
-
- for (i=256; i<511; i++)
- clip_softcore_post[i+319] = 255;
-
- }