/* * This file is part of the Advance project. * * Copyright (C) 2003 Andrea Mazzoleni * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * * In addition, as a special exception, Andrea Mazzoleni * gives permission to link the code of this program with * the MAME library (or with modified versions of MAME that use the * same license as MAME), and distribute linked combinations including * the two. You must obey the GNU General Public License in all * respects for all of the code used other than MAME. If you modify * this file, you may extend this exception to your version of the * file, but you are not obligated to do so. If you do not wish to * do so, delete this exception statement from your version. */ #include "System.h" #include "interp.h" /***************************************************************************/ /* HQ2x C implementation */ /* * This effect is a rewritten implementation of the hq2x effect made by Maxim Stepin */ static void hq2x_16_def(u16* dst0, u16* dst1, const u16* src0, const u16* src1, const u16* src2, unsigned count) { unsigned i; for(i=0;i0) { c[0] = src0[-1]; c[3] = src1[-1]; c[6] = src2[-1]; } else { c[0] = c[1]; c[3] = c[4]; c[6] = c[7]; } if (i0) { c[0] = src0[-1]; c[3] = src1[-1]; c[6] = src2[-1]; } else { c[0] = c[1]; c[3] = c[4]; c[6] = c[7]; } if (i0) { c[0] = src0[-1]; c[3] = src1[-1]; c[6] = src2[-1]; } else { c[0] = c[1]; c[3] = c[4]; c[6] = c[7]; } if (i0) { c[0] = src0[-1]; c[3] = src1[-1]; c[6] = src2[-1]; } else { c[0] = c[1]; c[3] = c[4]; c[6] = c[7]; } if (i> 1); u16 *src0 = (u16 *)srcPtr; u16 *src1 = src0 + (srcPitch >> 1); u16 *src2 = src1 + (srcPitch >> 1); hq2x_16_def(dst0, dst1, src0, src0, src1, width); int count = height; count -= 2; while(count) { dst0 += dstPitch; dst1 += dstPitch; hq2x_16_def(dst0, dst1, src0, src1, src2, width); src0 = src1; src1 = src2; src2 += srcPitch >> 1; --count; } dst0 += dstPitch; dst1 += dstPitch; hq2x_16_def(dst0, dst1, src0, src1, src1, width); } void hq2x32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */, u8 *dstPtr, u32 dstPitch, int width, int height) { u32 *dst0 = (u32 *)dstPtr; u32 *dst1 = dst0 + (dstPitch >> 2); u32 *src0 = (u32 *)srcPtr; u32 *src1 = src0 + (srcPitch >> 2); u32 *src2 = src1 + (srcPitch >> 2); hq2x_32_def(dst0, dst1, src0, src0, src1, width); int count = height; count -= 2; while(count) { dst0 += dstPitch >> 1; dst1 += dstPitch >> 1; hq2x_32_def(dst0, dst1, src0, src1, src2, width); src0 = src1; src1 = src2; src2 += srcPitch >> 2; --count; } dst0 += dstPitch >> 1; dst1 += dstPitch >> 1; hq2x_32_def(dst0, dst1, src0, src1, src1, width); } void lq2x(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */, u8 *dstPtr, u32 dstPitch, int width, int height) { u16 *dst0 = (u16 *)dstPtr; u16 *dst1 = dst0 + (dstPitch >> 1); u16 *src0 = (u16 *)srcPtr; u16 *src1 = src0 + (srcPitch >> 1); u16 *src2 = src1 + (srcPitch >> 1); lq2x_16_def(dst0, dst1, src0, src0, src1, width); int count = height; count -= 2; while(count) { dst0 += dstPitch; dst1 += dstPitch; lq2x_16_def(dst0, dst1, src0, src1, src2, width); src0 = src1; src1 = src2; src2 += srcPitch >> 1; --count; } dst0 += dstPitch; dst1 += dstPitch; lq2x_16_def(dst0, dst1, src0, src1, src1, width); } void lq2x32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */, u8 *dstPtr, u32 dstPitch, int width, int height) { u32 *dst0 = (u32 *)dstPtr; u32 *dst1 = dst0 + (dstPitch >> 2); u32 *src0 = (u32 *)srcPtr; u32 *src1 = src0 + (srcPitch >> 2); u32 *src2 = src1 + (srcPitch >> 2); lq2x_32_def(dst0, dst1, src0, src0, src1, width); int count = height; count -= 2; while(count) { dst0 += dstPitch >> 1; dst1 += dstPitch >> 1; lq2x_32_def(dst0, dst1, src0, src1, src2, width); src0 = src1; src1 = src2; src2 += srcPitch >> 2; --count; } dst0 += dstPitch >> 1; dst1 += dstPitch >> 1; lq2x_32_def(dst0, dst1, src0, src1, src1, width); } void hq2x_init(unsigned bits_per_pixel) { interp_set(bits_per_pixel); }