--- /dev/null
+/*
+Copyright (C) 2003 Rice1964
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+/* Copyright (C) 2007 Hiroshi Morii <koolsmoky(at)users.sourceforge.net>
+ * Modified for the Texture Filtering library
+ */
+
+#include <string.h>
+#include "TextureFilters.h"
+
+/************************************************************************/
+/* 2X filters */
+/************************************************************************/
+
+#define DWORD_MAKE(r, g, b, a) ((uint32) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b)))
+#define WORD_MAKE(r, g, b, a) ((uint16) (((a) << 12) | ((r) << 8) | ((g) << 4) | (b)))
+
+// Basic 2x R8G8B8A8 filter with interpolation
+
+void Texture2x_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height)
+{
+ uint32 *pDst1, *pDst2;
+ uint32 *pSrc, *pSrc2;
+ uint32 nWidth = width;
+ uint32 nHeight = height;
+
+ uint32 b1;
+ uint32 g1;
+ uint32 r1;
+ uint32 a1;
+ uint32 b2;
+ uint32 g2;
+ uint32 r2;
+ uint32 a2;
+ uint32 b3;
+ uint32 g3;
+ uint32 r3;
+ uint32 a3;
+ uint32 b4;
+ uint32 g4;
+ uint32 r4;
+ uint32 a4;
+
+ uint32 xSrc;
+ uint32 ySrc;
+
+ for (ySrc = 0; ySrc < nHeight; ySrc++)
+ {
+ pSrc = (uint32*)(((uint8*)srcPtr)+ySrc*srcPitch);
+ pSrc2 = (uint32*)(((uint8*)srcPtr)+(ySrc+1)*srcPitch);
+ pDst1 = (uint32*)(((uint8*)dstPtr)+(ySrc*2)*dstPitch);
+ pDst2 = (uint32*)(((uint8*)dstPtr)+(ySrc*2+1)*dstPitch);
+
+ for (xSrc = 0; xSrc < nWidth; xSrc++)
+ {
+ b1 = (pSrc[xSrc]>>0)&0xFF;
+ g1 = (pSrc[xSrc]>>8)&0xFF;
+ r1 = (pSrc[xSrc]>>16)&0xFF;
+ a1 = (pSrc[xSrc]>>24)&0xFF;
+
+ // Pixel 1
+ pDst1[xSrc*2] = pSrc[xSrc];
+
+ // Pixel 2
+ if( xSrc<nWidth-1 )
+ {
+ b2 = (pSrc[xSrc+1]>>0)&0xFF;
+ g2 = (pSrc[xSrc+1]>>8)&0xFF;
+ r2 = (pSrc[xSrc+1]>>16)&0xFF;
+ a2 = (pSrc[xSrc+1]>>24)&0xFF;
+ pDst1[xSrc*2+1] = DWORD_MAKE((r1+r2)/2, (g1+g2)/2, (b1+b2)/2, (a1+a2)/2);
+ }
+ else
+ pDst1[xSrc*2+1] = pSrc[xSrc];
+
+ // Pixel 3
+ if( ySrc<nHeight-1 )
+ {
+ b3 = (pSrc2[xSrc]>>0)&0xFF;
+ g3 = (pSrc2[xSrc]>>8)&0xFF;
+ r3 = (pSrc2[xSrc]>>16)&0xFF;
+ a3 = (pSrc2[xSrc]>>24)&0xFF;
+ pDst2[xSrc*2] = DWORD_MAKE((r1+r3)/2, (g1+g3)/2, (b1+b3)/2, (a1+a3)/2);
+ if( xSrc<nWidth-1 )
+ {
+ b4 = (pSrc2[xSrc+1]>>0)&0xFF;
+ g4 = (pSrc2[xSrc+1]>>8)&0xFF;
+ r4 = (pSrc2[xSrc+1]>>16)&0xFF;
+ a4 = (pSrc2[xSrc+1]>>24)&0xFF;
+ // Pixel 4
+ pDst2[xSrc*2+1] = DWORD_MAKE((r1+r2+r3+r4)/4, (g1+g2+g3+g4)/4, (b1+b2+b3+b4)/4, (a1+a2+a3+a4)/4);
+ }
+ else
+ {
+ // Pixel 4
+ pDst2[xSrc*2+1] = DWORD_MAKE((r1+r3)/2, (g1+g3)/2, (b1+b3)/2, (a1+a3)/2);
+ }
+ }
+ else
+ {
+ // Pixel 3
+ pDst2[xSrc*2] = pSrc[xSrc];
+ // Pixel 4
+ if( xSrc<nWidth-1 )
+ {
+ pDst2[xSrc*2+1] = DWORD_MAKE((r1+r2)/2, (g1+g2)/2, (b1+b2)/2, (a1+a2)/2);
+ }
+ else
+ {
+ pDst2[xSrc*2+1] = pSrc[xSrc];
+ }
+ }
+ }
+ }
+}
+
+#if !_16BPP_HACK
+// Basic 2x R4G4B4A4 filter with interpolation
+void Texture2x_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height)
+{
+ uint16 *pDst1, *pDst2;
+ uint16 *pSrc, *pSrc2;
+ uint32 nWidth = width;
+ uint32 nHeight = height;
+
+ uint16 b1;
+ uint16 g1;
+ uint16 r1;
+ uint16 a1;
+ uint16 b2;
+ uint16 g2;
+ uint16 r2;
+ uint16 a2;
+ uint16 b3;
+ uint16 g3;
+ uint16 r3;
+ uint16 a3;
+ uint16 b4;
+ uint16 g4;
+ uint16 r4;
+ uint16 a4;
+
+ uint16 xSrc;
+ uint16 ySrc;
+
+ for (ySrc = 0; ySrc < nHeight; ySrc++)
+ {
+ pSrc = (uint16*)(((uint8*)srcPtr)+ySrc*srcPitch);
+ pSrc2 = (uint16*)(((uint8*)srcPtr)+(ySrc+1)*srcPitch);
+ pDst1 = (uint16*)(((uint8*)dstPtr)+(ySrc*2)*dstPitch);
+ pDst2 = (uint16*)(((uint8*)dstPtr)+(ySrc*2+1)*dstPitch);
+
+ for (xSrc = 0; xSrc < nWidth; xSrc++)
+ {
+ b1 = (pSrc[xSrc]>> 0)&0xF;
+ g1 = (pSrc[xSrc]>> 4)&0xF;
+ r1 = (pSrc[xSrc]>> 8)&0xF;
+ a1 = (pSrc[xSrc]>>12)&0xF;
+
+ if( xSrc<nWidth-1 )
+ {
+ b2 = (pSrc[xSrc+1]>> 0)&0xF;
+ g2 = (pSrc[xSrc+1]>> 4)&0xF;
+ r2 = (pSrc[xSrc+1]>> 8)&0xF;
+ a2 = (pSrc[xSrc+1]>>12)&0xF;
+ }
+
+ if( ySrc<nHeight-1 )
+ {
+ b3 = (pSrc2[xSrc]>> 0)&0xF;
+ g3 = (pSrc2[xSrc]>> 4)&0xF;
+ r3 = (pSrc2[xSrc]>> 8)&0xF;
+ a3 = (pSrc2[xSrc]>>12)&0xF;
+ if( xSrc<nWidth-1 )
+ {
+ b4 = (pSrc2[xSrc+1]>> 0)&0xF;
+ g4 = (pSrc2[xSrc+1]>> 4)&0xF;
+ r4 = (pSrc2[xSrc+1]>> 8)&0xF;
+ a4 = (pSrc2[xSrc+1]>>12)&0xF;
+ }
+ }
+
+ // Pixel 1
+ pDst1[xSrc*2] = pSrc[xSrc];
+
+ // Pixel 2
+ if( xSrc<nWidth-1 )
+ {
+ pDst1[xSrc*2+1] = WORD_MAKE((r1+r2)/2, (g1+g2)/2, (b1+b2)/2, (a1+a2)/2);
+ }
+ else
+ pDst1[xSrc*2+1] = pSrc[xSrc];
+
+
+ // Pixel 3
+ if( ySrc<nHeight-1 )
+ {
+ pDst2[xSrc*2] = WORD_MAKE((r1+r3)/2, (g1+g3)/2, (b1+b3)/2, (a1+a3)/2);
+ }
+ else
+ pDst2[xSrc*2] = pSrc[xSrc];
+
+ // Pixel 4
+ if( xSrc<nWidth-1 )
+ {
+ if( ySrc<nHeight-1 )
+ {
+ pDst2[xSrc*2+1] = WORD_MAKE((r1+r2+r3+r4)/4, (g1+g2+g3+g4)/4, (b1+b2+b3+b4)/4, (a1+a2+a3+a4)/4);
+ }
+ else
+ {
+ pDst2[xSrc*2+1] = WORD_MAKE((r1+r2)/2, (g1+g2)/2, (b1+b2)/2, (a1+a2)/2);
+ }
+ }
+ else
+ {
+ if( ySrc<nHeight-1 )
+ {
+ pDst2[xSrc*2+1] = WORD_MAKE((r1+r3)/2, (g1+g3)/2, (b1+b3)/2, (a1+a3)/2);
+ }
+ else
+ pDst2[xSrc*2+1] = pSrc[xSrc];
+ }
+ }
+ }
+}
+#endif /* !_16BPP_HACK */
+
+/*
+ * Sharp filters
+ * Hiroshi Morii <koolsmoky@users.sourceforge.net>
+ */
+void SharpFilter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter)
+{
+ // NOTE: for now we get away with copying the boundaries
+ // filter the boundaries if we face problems
+
+ uint32 mul1, mul2, mul3, shift4;
+
+ uint32 x,y,z;
+ uint32 *_src1, *_src2, *_src3, *_dest;
+ uint32 val[4];
+ uint32 t1,t2,t3,t4,t5,t6,t7,t8,t9;
+
+ switch( filter )
+ {
+ case SHARP_FILTER_2:
+ mul1=1;
+ mul2=8;
+ mul3=12;
+ shift4=2;
+ break;
+ case SHARP_FILTER_1:
+ default:
+ mul1=1;
+ mul2=8;
+ mul3=16;
+ shift4=3;
+ break;
+ }
+
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 2));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for (y = 1; y < srcheight-1; y++) {
+ // copy the first pixel
+ _dest[0] = *_src2;
+ // filter 2nd pixel to 1 pixel before last
+ for (x = 1; x < srcwidth-1; x++) {
+ for (z=0; z<4; z++) {
+ t1 = *((uint8*)(_src1+x-1)+z);
+ t2 = *((uint8*)(_src1+x )+z);
+ t3 = *((uint8*)(_src1+x+1)+z);
+ t4 = *((uint8*)(_src2+x-1)+z);
+ t5 = *((uint8*)(_src2+x )+z);
+ t6 = *((uint8*)(_src2+x+1)+z);
+ t7 = *((uint8*)(_src3+x-1)+z);
+ t8 = *((uint8*)(_src3+x )+z);
+ t9 = *((uint8*)(_src3+x+1)+z);
+
+ if( (t5*mul2) > (t1+t3+t7+t9+t2+t4+t6+t8)*mul1 ) {
+ val[z]= ((t5*mul3) - (t1+t3+t7+t9+t2+t4+t6+t8)*mul1)>>shift4;
+ if (val[z] > 0xFF) val[z] = 0xFF;
+ } else {
+ val[z] = t5;
+ }
+ }
+ _dest[x] = val[0]|(val[1]<<8)|(val[2]<<16)|(val[3]<<24);
+ }
+ // copy the ending pixel
+ _dest[srcwidth-1] = *(_src3 - 1);
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 2));
+}
+
+#if !_16BPP_HACK
+void SharpFilter_4444(uint16 *src, uint32 srcwidth, uint32 srcheight, uint16 *dest, uint32 filter)
+{
+ // NOTE: for now we get away with copying the boundaries
+ // filter the boundaries if we face problems
+
+ uint16 mul1, mul2, mul3, shift4;
+
+ uint32 x,y,z;
+ uint16 *_src1, *_src2, *_src3, *_dest;
+ uint16 val[4];
+ uint16 t1,t2,t3,t4,t5,t6,t7,t8,t9;
+
+ switch( filter ) {
+ case SHARP_FILTER_2:
+ mul1=1;
+ mul2=8;
+ mul3=12;
+ shift4=2;
+ break;
+ case SHARP_FILTER_1:
+ default:
+ mul1=1;
+ mul2=8;
+ mul3=16;
+ shift4=3;
+ break;
+ }
+
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 1));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for( y = 1; y < srcheight - 1; y++) {
+ // copy the first pixel
+ _dest[0] = *_src2;
+ // filter 2nd pixel to 1 pixel before last
+ for( x = 1; x < srcwidth - 1; x++) {
+ for( z = 0; z < 4; z++ ) {
+ /* Hiroshi Morii <koolsmoky@users.sourceforge.net>
+ * Read the entire 16bit pixel and then extract the A,R,G,B components.
+ */
+ uint32 shift = z << 2;
+ t1 = ((*((uint16*)(_src1+x-1))) >> shift) & 0xF;
+ t2 = ((*((uint16*)(_src1+x ))) >> shift) & 0xF;
+ t3 = ((*((uint16*)(_src1+x+1))) >> shift) & 0xF;
+ t4 = ((*((uint16*)(_src2+x-1))) >> shift) & 0xF;
+ t5 = ((*((uint16*)(_src2+x ))) >> shift) & 0xF;
+ t6 = ((*((uint16*)(_src2+x+1))) >> shift) & 0xF;
+ t7 = ((*((uint16*)(_src3+x-1))) >> shift) & 0xF;
+ t8 = ((*((uint16*)(_src3+x ))) >> shift) & 0xF;
+ t9 = ((*((uint16*)(_src3+x+1))) >> shift) & 0xF;
+
+ if( (t5*mul2) > (t1+t3+t7+t9+t2+t4+t6+t8)*mul1 ) {
+ val[z] = ((t5*mul3) - (t1+t3+t7+t9+t2+t4+t6+t8)*mul1)>>shift4;
+ if (val[z] > 0xF) val[z] = 0xF;
+ } else {
+ val[z] = t5;
+ }
+ }
+ _dest[x] = val[0]|(val[1]<<4)|(val[2]<<8)|(val[3]<<12);
+ }
+ // copy the ending pixel
+ _dest[srcwidth-1] = *(_src3 - 1);
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 1));
+}
+#endif /* !_16BPP_HACK */
+
+/*
+ * Smooth filters
+ * Hiroshi Morii <koolsmoky@users.sourceforge.net>
+ */
+void SmoothFilter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter)
+{
+ // NOTE: for now we get away with copying the boundaries
+ // filter the boundaries if we face problems
+
+ uint32 mul1, mul2, mul3, shift4;
+
+ uint32 x,y,z;
+ uint32 *_src1, *_src2, *_src3, *_dest;
+ uint32 val[4];
+ uint32 t1,t2,t3,t4,t5,t6,t7,t8,t9;
+
+ switch( filter ) {
+ case SMOOTH_FILTER_4:
+ mul1=1;
+ mul2=2;
+ mul3=4;
+ shift4=4;
+ break;
+ case SMOOTH_FILTER_3:
+ mul1=1;
+ mul2=1;
+ mul3=8;
+ shift4=4;
+ break;
+ case SMOOTH_FILTER_2:
+ mul1=1;
+ mul2=1;
+ mul3=2;
+ shift4=2;
+ break;
+ case SMOOTH_FILTER_1:
+ default:
+ mul1=1;
+ mul2=1;
+ mul3=6;
+ shift4=3;
+ break;
+ }
+
+ switch (filter) {
+ case SMOOTH_FILTER_3:
+ case SMOOTH_FILTER_4:
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 2));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for (y = 1; y < srcheight - 1; y++){
+ // copy the first pixel
+ _dest[0] = _src2[0];
+ // filter 2nd pixel to 1 pixel before last
+ for (x = 1; x < srcwidth - 1; x++) {
+ for (z = 0; z < 4; z++ ) {
+ t1 = *((uint8*)(_src1+x-1)+z);
+ t2 = *((uint8*)(_src1+x )+z);
+ t3 = *((uint8*)(_src1+x+1)+z);
+ t4 = *((uint8*)(_src2+x-1)+z);
+ t5 = *((uint8*)(_src2+x )+z);
+ t6 = *((uint8*)(_src2+x+1)+z);
+ t7 = *((uint8*)(_src3+x-1)+z);
+ t8 = *((uint8*)(_src3+x )+z);
+ t9 = *((uint8*)(_src3+x+1)+z);
+ /* the component value must not overflow 0xFF */
+ val[z] = ((t1+t3+t7+t9)*mul1+((t2+t4+t6+t8)*mul2)+(t5*mul3))>>shift4;
+ if (val[z] > 0xFF) val[z] = 0xFF;
+ }
+ _dest[x] = val[0]|(val[1]<<8)|(val[2]<<16)|(val[3]<<24);
+ }
+ // copy the ending pixel
+ _dest[srcwidth-1] = *(_src3 - 1);
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 2));
+ break;
+ case SMOOTH_FILTER_1:
+ case SMOOTH_FILTER_2:
+ default:
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 2));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for (y = 1; y < srcheight - 1; y++) {
+ // filter 1st pixel to the last
+ if (y & 1) {
+ for( x = 0; x < srcwidth; x++) {
+ for( z = 0; z < 4; z++ ) {
+ t2 = *((uint8*)(_src1+x )+z);
+ t5 = *((uint8*)(_src2+x )+z);
+ t8 = *((uint8*)(_src3+x )+z);
+ /* the component value must not overflow 0xFF */
+ val[z] = ((t2+t8)*mul2+(t5*mul3))>>shift4;
+ if (val[z] > 0xFF) val[z] = 0xFF;
+ }
+ _dest[x] = val[0]|(val[1]<<8)|(val[2]<<16)|(val[3]<<24);
+ }
+ } else {
+ memcpy(_dest, _src2, (srcwidth << 2));
+ }
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 2));
+ break;
+ }
+}
+
+#if !_16BPP_HACK
+void SmoothFilter_4444(uint16 *src, uint32 srcwidth, uint32 srcheight, uint16 *dest, uint32 filter)
+{
+ // NOTE: for now we get away with copying the boundaries
+ // filter the boundaries if we face problems
+
+ uint16 mul1, mul2, mul3, shift4;
+
+ uint32 x,y,z;
+ uint16 *_src1, *_src2, *_src3, *_dest;
+ uint16 val[4];
+ uint16 t1,t2,t3,t4,t5,t6,t7,t8,t9;
+
+ switch( filter ) {
+ case SMOOTH_FILTER_4:
+ mul1=1;
+ mul2=2;
+ mul3=4;
+ shift4=4;
+ break;
+ case SMOOTH_FILTER_3:
+ mul1=1;
+ mul2=1;
+ mul3=8;
+ shift4=4;
+ break;
+ case SMOOTH_FILTER_2:
+ mul1=1;
+ mul2=1;
+ mul3=2;
+ shift4=2;
+ break;
+ case SMOOTH_FILTER_1:
+ default:
+ mul1=1;
+ mul2=1;
+ mul3=6;
+ shift4=3;
+ break;
+ }
+
+ switch (filter) {
+ case SMOOTH_FILTER_3:
+ case SMOOTH_FILTER_4:
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 1));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for (y = 1; y < srcheight - 1; y++) {
+ // copy the first pixel
+ _dest[0] = *_src2;
+ // filter 2nd pixel to 1 pixel before last
+ for (x = 1; x < srcwidth - 1; x++) {
+ for (z = 0; z < 4; z++ ) {
+ /* Read the entire 16bit pixel and then extract the A,R,G,B components. */
+ uint32 shift = z << 2;
+ t1 = ((*(uint16*)(_src1+x-1)) >> shift) & 0xF;
+ t2 = ((*(uint16*)(_src1+x )) >> shift) & 0xF;
+ t3 = ((*(uint16*)(_src1+x+1)) >> shift) & 0xF;
+ t4 = ((*(uint16*)(_src2+x-1)) >> shift) & 0xF;
+ t5 = ((*(uint16*)(_src2+x )) >> shift) & 0xF;
+ t6 = ((*(uint16*)(_src2+x+1)) >> shift) & 0xF;
+ t7 = ((*(uint16*)(_src3+x-1)) >> shift) & 0xF;
+ t8 = ((*(uint16*)(_src3+x )) >> shift) & 0xF;
+ t9 = ((*(uint16*)(_src3+x+1)) >> shift) & 0xF;
+ /* the component value must not overflow 0xF */
+ val[z] = ((t1+t3+t7+t9)*mul1+((t2+t4+t6+t8)*mul2)+(t5*mul3))>>shift4;
+ if (val[z] > 0xF) val[z] = 0xF;
+ }
+ _dest[x] = val[0]|(val[1]<<4)|(val[2]<<8)|(val[3]<<12);
+ }
+ // copy the ending pixel
+ _dest[srcwidth-1] = *(_src3 - 1);
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 1));
+ break;
+ case SMOOTH_FILTER_1:
+ case SMOOTH_FILTER_2:
+ default:
+ // setup rows
+ _src1 = src;
+ _src2 = _src1 + srcwidth;
+ _src3 = _src2 + srcwidth;
+ _dest = dest;
+ // copy the first row
+ memcpy(_dest, _src1, (srcwidth << 1));
+ _dest += srcwidth;
+ // filter 2nd row to 1 row before the last
+ for( y = 1; y < srcheight - 1; y++) {
+ if (y & 1) {
+ for( x = 0; x < srcwidth; x++) {
+ for( z = 0; z < 4; z++ ) {
+ /* Read the entire 16bit pixel and then extract the A,R,G,B components. */
+ uint32 shift = z << 2;
+ t2 = ((*(uint16*)(_src1+x)) >> shift) & 0xF;
+ t5 = ((*(uint16*)(_src2+x)) >> shift) & 0xF;
+ t8 = ((*(uint16*)(_src3+x)) >> shift) & 0xF;
+ /* the component value must not overflow 0xF */
+ val[z] = ((t2+t8)*mul2+(t5*mul3))>>shift4;
+ if (val[z] > 0xF) val[z] = 0xF;
+ }
+ _dest[x] = val[0]|(val[1]<<4)|(val[2]<<8)|(val[3]<<12);
+ }
+ } else {
+ memcpy(_dest, _src2, (srcwidth << 1));
+ }
+ // next row
+ _src1 += srcwidth;
+ _src2 += srcwidth;
+ _src3 += srcwidth;
+ _dest += srcwidth;
+ }
+ // copy the last row
+ memcpy(_dest, _src2, (srcwidth << 1));
+ break;
+ }
+}
+#endif /* !_16BPP_HACK */
+
+void filter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter) {
+ switch (filter & ENHANCEMENT_MASK) {
+ case HQ4X_ENHANCEMENT:
+ hq4x_8888((uint8*)src, (uint8*)dest, srcwidth, srcheight, srcwidth, (srcwidth << 4));
+ return;
+ case HQ2X_ENHANCEMENT:
+ hq2x_32((uint8*)src, (srcwidth << 2), (uint8*)dest, (srcwidth << 3), srcwidth, srcheight);
+ return;
+ case HQ2XS_ENHANCEMENT:
+ hq2xS_32((uint8*)src, (srcwidth << 2), (uint8*)dest, (srcwidth << 3), srcwidth, srcheight);
+ return;
+ case LQ2X_ENHANCEMENT:
+ lq2x_32((uint8*)src, (srcwidth << 2), (uint8*)dest, (srcwidth << 3), srcwidth, srcheight);
+ return;
+ case LQ2XS_ENHANCEMENT:
+ lq2xS_32((uint8*)src, (srcwidth << 2), (uint8*)dest, (srcwidth << 3), srcwidth, srcheight);
+ return;
+ case X2SAI_ENHANCEMENT:
+ Super2xSaI_8888((uint32*)src, (uint32*)dest, srcwidth, srcheight, srcwidth);
+ return;
+ case X2_ENHANCEMENT:
+ Texture2x_32((uint8*)src, (srcwidth << 2), (uint8*)dest, (srcwidth << 3), srcwidth, srcheight);
+ return;
+ }
+
+ switch (filter & (SMOOTH_FILTER_MASK|SHARP_FILTER_MASK)) {
+ case SMOOTH_FILTER_1:
+ case SMOOTH_FILTER_2:
+ case SMOOTH_FILTER_3:
+ case SMOOTH_FILTER_4:
+ SmoothFilter_8888((uint32*)src, srcwidth, srcheight, (uint32*)dest, (filter & SMOOTH_FILTER_MASK));
+ return;
+ case SHARP_FILTER_1:
+ case SHARP_FILTER_2:
+ SharpFilter_8888((uint32*)src, srcwidth, srcheight, (uint32*)dest, (filter & SHARP_FILTER_MASK));
+ return;
+ }
+}
notaz.gp2x.de / mupen64plus-pandora.git / blobdiff