164 lines
7 KiB
C++
164 lines
7 KiB
C++
/* This is a heavily modified version of the file used in RetroArch */
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/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2014 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "stdafx.h"
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#include "../stdafx.h"
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#define twoxsai_interpolate_xrgb8888(A, B) ((((A) & 0xFEFEFEFE) >> 1) + (((B) & 0xFEFEFEFE) >> 1) + ((A) & (B) & 0x01010101))
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#define twoxsai_interpolate2_xrgb8888(A, B, C, D) ((((A) & 0xFCFCFCFC) >> 2) + (((B) & 0xFCFCFCFC) >> 2) + (((C) & 0xFCFCFCFC) >> 2) + (((D) & 0xFCFCFCFC) >> 2) + (((((A) & 0x03030303) + ((B) & 0x03030303) + ((C) & 0x03030303) + ((D) & 0x03030303)) >> 2) & 0x03030303))
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#define twoxsai_interpolate_rgb565(A, B) ((((A) & 0xF7DE) >> 1) + (((B) & 0xF7DE) >> 1) + ((A) & (B) & 0x0821))
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#define twoxsai_interpolate2_rgb565(A, B, C, D) ((((A) & 0xE79C) >> 2) + (((B) & 0xE79C) >> 2) + (((C) & 0xE79C) >> 2) + (((D) & 0xE79C) >> 2) + (((((A) & 0x1863) + ((B) & 0x1863) + ((C) & 0x1863) + ((D) & 0x1863)) >> 2) & 0x1863))
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#define twoxsai_interpolate_4444(A, B) (((A & 0xEEEE) >> 1) + ((B & 0xEEEE) >> 1) + (A & B & 0x1111))
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#define twoxsai_interpolate2_4444(A, B, C, D) (((A & 0xCCCC) >> 2) + ((B & 0xCCCC) >> 2) + ((C & 0xCCCC) >> 2) + ((D & 0xCCCC) >> 2) + ((((A & 0x3333) + (B & 0x3333) + (C & 0x3333) + (D & 0x3333)) >> 2) & 0x3333))
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#define twoxsai_result(A, B, C, D) (((A) != (C) || (A) != (D)) - ((B) != (C) || (B) != (D)));
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#define twoxsai_declare_variables(typename_t, in, nextline) \
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typename_t product, product1, product2; \
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typename_t colorI = *(in - nextline - 1); \
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typename_t colorE = *(in - nextline + 0); \
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typename_t colorF = *(in - nextline + 1); \
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typename_t colorJ = *(in - nextline + 2); \
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typename_t colorG = *(in - 1); \
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typename_t colorA = *(in + 0); \
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typename_t colorB = *(in + 1); \
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typename_t colorK = *(in + 2); \
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typename_t colorH = *(in + nextline - 1); \
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typename_t colorC = *(in + nextline + 0); \
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typename_t colorD = *(in + nextline + 1); \
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typename_t colorL = *(in + nextline + 2); \
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typename_t colorM = *(in + nextline + nextline - 1); \
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typename_t colorN = *(in + nextline + nextline + 0); \
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typename_t colorO = *(in + nextline + nextline + 1);
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#ifndef twoxsai_function
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#define twoxsai_function(result_cb, interpolate_cb, interpolate2_cb) \
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if (colorA == colorD && colorB != colorC) \
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{ \
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if ((colorA == colorE && colorB == colorL) || (colorA == colorC && colorA == colorF && colorB != colorE && colorB == colorJ)) \
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product = colorA; \
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else \
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{ \
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product = interpolate_cb(colorA, colorB); \
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} \
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if ((colorA == colorG && colorC == colorO) || (colorA == colorB && colorA == colorH && colorG != colorC && colorC == colorM)) \
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product1 = colorA; \
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else \
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{ \
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product1 = interpolate_cb(colorA, colorC); \
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} \
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product2 = colorA; \
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} else if (colorB == colorC && colorA != colorD) \
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{ \
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if ((colorB == colorF && colorA == colorH) || (colorB == colorE && colorB == colorD && colorA != colorF && colorA == colorI)) \
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product = colorB; \
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else \
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{ \
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product = interpolate_cb(colorA, colorB); \
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} \
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if ((colorC == colorH && colorA == colorF) || (colorC == colorG && colorC == colorD && colorA != colorH && colorA == colorI)) \
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product1 = colorC; \
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else \
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{ \
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product1 = interpolate_cb(colorA, colorC); \
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} \
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product2 = colorB; \
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} \
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else if (colorA == colorD && colorB == colorC) \
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{ \
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if (colorA == colorB) \
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{ \
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product = colorA; \
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product1 = colorA; \
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product2 = colorA; \
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} \
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else \
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{ \
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int r = 0; \
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product1 = interpolate_cb(colorA, colorC); \
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product = interpolate_cb(colorA, colorB); \
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r += result_cb(colorA, colorB, colorG, colorE); \
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r += result_cb(colorB, colorA, colorK, colorF); \
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r += result_cb(colorB, colorA, colorH, colorN); \
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r += result_cb(colorA, colorB, colorL, colorO); \
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if (r > 0) \
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product2 = colorA; \
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else if (r < 0) \
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product2 = colorB; \
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else \
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{ \
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product2 = interpolate2_cb(colorA, colorB, colorC, colorD); \
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} \
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} \
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} \
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else \
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{ \
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product2 = interpolate2_cb(colorA, colorB, colorC, colorD); \
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if (colorA == colorC && colorA == colorF && colorB != colorE && colorB == colorJ) \
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product = colorA; \
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else if (colorB == colorE && colorB == colorD && colorA != colorF && colorA == colorI) \
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product = colorB; \
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else \
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{ \
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product = interpolate_cb(colorA, colorB); \
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} \
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if (colorA == colorB && colorA == colorH && colorG != colorC && colorC == colorM) \
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product1 = colorA; \
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else if (colorC == colorG && colorC == colorD && colorA != colorH && colorA == colorI) \
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product1 = colorC; \
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else \
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{ \
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product1 = interpolate_cb(colorA, colorC); \
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} \
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} \
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out[0] = colorA; \
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out[1] = product; \
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out[dst_stride] = product1; \
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out[dst_stride + 1] = product2; \
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++in; \
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out += 2
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#endif
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void twoxsai_generic_xrgb8888(unsigned width, unsigned height, uint32_t *src, unsigned src_stride, uint32_t *dst, unsigned dst_stride)
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{
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unsigned finish;
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for(; height; height--) {
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uint32_t *in = (uint32_t*)src;
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uint32_t *out = (uint32_t*)dst;
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for(finish = width; finish; finish -= 1) {
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twoxsai_declare_variables(uint32_t, in, (height > 1 ? src_stride : 0));
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/*
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* Map of the pixels: I|E F|J
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* G|A B|K
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* H|C D|L
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* M|N O|P
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*/
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twoxsai_function(twoxsai_result, twoxsai_interpolate_xrgb8888, twoxsai_interpolate2_xrgb8888);
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}
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src += src_stride;
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dst += 2 * dst_stride;
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}
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}
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