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Diffstat (limited to 'common/scaler/intern.h')
| -rw-r--r-- | common/scaler/intern.h | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/common/scaler/intern.h b/common/scaler/intern.h deleted file mode 100644 index fa3ca1823a..0000000000 --- a/common/scaler/intern.h +++ /dev/null @@ -1,171 +0,0 @@ -/* ScummVM - Scumm Interpreter - * Copyright (C) 2001 Ludvig Strigeus - * Copyright (C) 2001-2006 The ScummVM project - * - * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - */ - - -#ifndef COMMON_SCALER_INTERN_H -#define COMMON_SCALER_INTERN_H - -#include "common/stdafx.h" -#include "common/scummsys.h" - -template<int bitFormat> -struct ColorMasks { -}; - -template<> -struct ColorMasks<565> { - enum { - highBits = 0xF7DEF7DE, - lowBits = 0x08210821, - qhighBits = 0xE79CE79C, - qlowBits = 0x18631863, - redblueMask = 0xF81F, - greenMask = 0x07E0 - }; -}; - -template<> -struct ColorMasks<555> { - enum { - highBits = 0x7BDE7BDE, - lowBits = 0x04210421, - qhighBits = 0x739C739C, - qlowBits = 0x0C630C63, - redblueMask = 0x7C1F, - greenMask = 0x03E0 - }; -}; - -#define highBits ColorMasks<bitFormat>::highBits -#define lowBits ColorMasks<bitFormat>::lowBits -#define qhighBits ColorMasks<bitFormat>::qhighBits -#define qlowBits ColorMasks<bitFormat>::qlowBits -#define redblueMask ColorMasks<bitFormat>::redblueMask -#define greenMask ColorMasks<bitFormat>::greenMask - - -/** - * Interpolate two 16 bit pixel pairs at once with equal weights 1. - * In particular, A and B can contain two pixels/each in the upper - * and lower halves. - */ -template<int bitFormat> -static inline uint32 INTERPOLATE(uint32 A, uint32 B) { - - return (((A & highBits) >> 1) + ((B & highBits) >> 1) + (A & B & lowBits)); -} - -/** - * Interpolate four 16 bit pixel pairs at once with equal weights 1. - * In particular, A and B can contain two pixels/each in the upper - * and lower halves. - */ -template<int bitFormat> -static inline uint32 Q_INTERPOLATE(uint32 A, uint32 B, uint32 C, uint32 D) { - register uint32 x = ((A & qhighBits) >> 2) + ((B & qhighBits) >> 2) + ((C & qhighBits) >> 2) + ((D & qhighBits) >> 2); - register uint32 y = ((A & qlowBits) + (B & qlowBits) + (C & qlowBits) + (D & qlowBits)) >> 2; - - y &= qlowBits; - return x + y; -} - - -/** - * Interpolate two 16 bit pixels with the weights specified in the template - * parameters. Used by the hq scaler family. - */ -template<int bitFormat, int w1, int w2> -static inline uint16 interpolate16_2(uint16 p1, uint16 p2) { - return ((((p1 & redblueMask) * w1 + (p2 & redblueMask) * w2) / (w1 + w2)) & redblueMask) | - ((((p1 & greenMask) * w1 + (p2 & greenMask) * w2) / (w1 + w2)) & greenMask); -} - -/** - * Interpolate three 16 bit pixels with the weights specified in the template - * parameters. Used by the hq scaler family. - */ -template<int bitFormat, int w1, int w2, int w3> -static inline uint16 interpolate16_3(uint16 p1, uint16 p2, uint16 p3) { - return ((((p1 & redblueMask) * w1 + (p2 & redblueMask) * w2 + (p3 & redblueMask) * w3) / (w1 + w2 + w3)) & redblueMask) | - ((((p1 & greenMask) * w1 + (p2 & greenMask) * w2 + (p3 & greenMask) * w3) / (w1 + w2 + w3)) & greenMask); -} - - -/** - * Compare two YUV values (encoded 8-8-8) and check if they differ by more than - * a certain hard coded threshold. Used by the hq scaler family. - */ -static inline bool diffYUV(int yuv1, int yuv2) { - static const int Ymask = 0x00FF0000; - static const int Umask = 0x0000FF00; - static const int Vmask = 0x000000FF; - static const int trY = 0x00300000; - static const int trU = 0x00000700; - static const int trV = 0x00000006; - - int diff; - int mask; - - diff = ((yuv1 & Ymask) - (yuv2 & Ymask)); - mask = diff >> 31; // -1 if value < 0, 0 otherwise - diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value - if (diff > trY) return true; - - diff = ((yuv1 & Umask) - (yuv2 & Umask)); - mask = diff >> 31; // -1 if value < 0, 0 otherwise - diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value - if (diff > trU) return true; - - diff = ((yuv1 & Vmask) - (yuv2 & Vmask)); - mask = diff >> 31; // -1 if value < 0, 0 otherwise - diff = (diff ^ mask) - mask; //-1: ~value + 1; 0: value - if (diff > trV) return true; - - return false; -/* - return - ( ( ABS((yuv1 & Ymask) - (yuv2 & Ymask)) > trY ) || - ( ABS((yuv1 & Umask) - (yuv2 & Umask)) > trU ) || - ( ABS((yuv1 & Vmask) - (yuv2 & Vmask)) > trV ) ); -*/ -} - -/** - * 16bit RGB to YUV conversion table. This table is setup by InitLUT(). - * Used by the hq scaler family. - */ -extern "C" uint *RGBtoYUV; - -/** Auxiliary macro to simplify creating those template function wrappers. */ -#define MAKE_WRAPPER(FUNC) \ - void FUNC(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) { \ - if (gBitFormat == 565) \ - FUNC ## Template<565>(srcPtr, srcPitch, dstPtr, dstPitch, width, height); \ - else \ - FUNC ## Template<555>(srcPtr, srcPitch, dstPtr, dstPitch, width, height); \ - } - -/** Specifies the currently active 16bit pixel format, 555 or 565. */ -extern int gBitFormat; - -#endif |