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kichikuou_xsystem35-sdl2/src/image24.c
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kichikuou f1b0b399fa Convert EUC to utf-8
2017-02-11 19:03:05 +09:00

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/*
* image24.c image操作(24/32bpp)
*
* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
* 1998- <masaki-c@is.aist-nara.ac.jp>
*
* 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
*
*/
/* $Id: image24.c,v 1.17 2006/04/21 16:40:48 chikama Exp $ */
#include <stdio.h>
#include "portab.h"
static void fadeOut24(agsurface_t *dst, int lv, int col) {
DWORD *yld;
int x, y;
for (y = 0; y < dst->height; y+=4) {
yld = (DWORD *)(dst->pixel + (y + fadeY[lv]) * dst->bytes_per_line);
for (x = 0; x < dst->width; x+=4) {
*(yld + fadeX[lv]) = col;
yld+=4;
}
}
}
static void fadeIn24(agsurface_t *src, agsurface_t *dst, int lv) {
DWORD *yls, *yld;
int x, y;
for (y = 0; y < src->height; y+=4) {
yls = (DWORD *)(src->pixel + (y + fadeY[lv]) * src->bytes_per_line);
yld = (DWORD *)(dst->pixel + (y + fadeY[lv]) * dst->bytes_per_line);
for (x = 0; x < src->width; x+=4) {
*(yld + fadeX[lv]) = *(yls + fadeX[lv]);
yls+=4; yld+=4;
}
}
}
static void drawImage16_fromData24(agsurface_t *dib, cgdata *cg, int dx, int dy, int w, int h) {
int x, y;
WORD pic16;
WORD *pic_src = (WORD *)(cg->pic + cg->data_offset);
BYTE *pic_dst = GETOFFSET_PIXEL(dib, dx, dy);
DWORD *yl;
for (y = 0; y < h; y++) {
yl = (DWORD *)(pic_dst + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
pic16 = *pic_src;
*yl = PIX24(RGB_PIXR16(pic16),RGB_PIXG16(pic16),RGB_PIXB16(pic16));
yl ++; pic_src++;
}
pic_src += (cg->width - w);
}
}
static void drawSprite16_fromData24(agsurface_t *dib, cgdata *cg, int dx, int dy, int w, int h) {
int x, y;
WORD pic16;
WORD *pic_src = (WORD *)(cg->pic + cg->data_offset);
BYTE *pic_dst = GETOFFSET_PIXEL(dib, dx, dy);
BYTE *pic_dst_a = GETOFFSET_ALPHA(dib, dx, dy);
DWORD *yl, pic24;
BYTE *ya;
for (y = 0; y < h; y++) {
yl = (DWORD *)(pic_dst + y * dib->bytes_per_line);
ya = (BYTE *)(pic_dst_a + y * dib->width);
for (x = 0; x < w; x++) {
pic16 = *pic_src;
pic24 = PIX24(RGB_PIXR16(pic16),RGB_PIXG16(pic16),RGB_PIXB16(pic16));
if (*ya == 255) {
*yl = pic24;
} else if (*ya > 0) {
*yl = ALPHABLEND24(pic24, *yl, *ya);
}
yl ++; ya++; pic_src++;
}
pic_src += (cg->width - w);
}
}
static void expandPixel8to24(agsurface_t *src, agsurface_t *dst) {
int x, y;
DWORD *yd;
BYTE *ys;
for (y = 0; y < src->height; y++) {
ys = (BYTE *)(src->pixel + y * src->bytes_per_line);
yd = (DWORD *)(dst->pixel + y * dst->bytes_per_line);
for (x = 0; x < src->width; x++) {
*yd = xpal[*ys].pixel;
ys++; yd++;
}
}
}
static void image_drawLine24(agsurface_t *dib, int x0, int y0, int x1, int y1, int col) {
int dx = abs(x0 - x1), dy = abs(y0 - y1);
if (dx == 0) {
int i = min(y0, y1), d = dib->bytes_per_line / 4;
DWORD *p = (DWORD *)GETOFFSET_PIXEL(dib, x0, i);
for (i = 0; i < dy; i++) {
*p = col;
p += d;
}
} else if (dy == 0) {
int i = min(x0, x1), j;
DWORD *p = (DWORD *)GETOFFSET_PIXEL(dib, i, y0);
for (j = 0; j < dx; j++) {
*(p++) = col;
}
} else if (dx == dy) {
int i;
DWORD *p;
if (x0 < x1) {
p = (DWORD *)GETOFFSET_PIXEL(dib, x0, y0);
if (y0 < y1) {
dy = dib->bytes_per_line + dib->bytes_per_pixel;
} else {
dy = -dib->bytes_per_line + dib->bytes_per_pixel;
}
} else {
p = (DWORD *)GETOFFSET_PIXEL(dib, x1, y1);
if (y0 < y1) {
dy = -dib->bytes_per_line + dib->bytes_per_pixel;
} else {
dy = dib->bytes_per_line + dib->bytes_per_pixel;
}
}
dy /= 4;
for (i = 0; i < dx; i++) {
*p = col;
p += dy;
}
} else {
int i, d1, d2, ds, dd, imax;
DWORD *p;
if (dx < dy) {
d1 = dib->bytes_per_line;
if (y0 > y1) {
p = (DWORD *)GETOFFSET_PIXEL(dib, x1, y1);
d2 = dib->bytes_per_pixel * (x0 < x1 ? -1 : 1);
} else {
p = (DWORD *)GETOFFSET_PIXEL(dib, x0, y0);
d2 = dib->bytes_per_pixel * (x0 < x1 ? 1 : -1);
}
ds = dx;
imax = dy;
} else {
d1 = dib->bytes_per_pixel;
if (x0 > x1) {
p = (DWORD *)GETOFFSET_PIXEL(dib, x1, y1);
d2 = dib->bytes_per_line * (y0 < y1 ? -1 : 1);
} else {
p = (DWORD *)GETOFFSET_PIXEL(dib, x0, y0);
d2 = dib->bytes_per_line * (y0 < y1 ? 1 : -1);
}
ds = dy;
imax = dx;
}
dd = 0;
d1 /= 4;
d2 /= 4;
for (i = 0; i < imax; i++) {
*p = col;
p += d1;
dd += ds;
if (dd > imax) {
p += d2;
dd -= imax;
}
}
}
}
static void image_drawRectangle24(agsurface_t *dib, int x, int y, int w, int h, int col) {
BYTE *dst = GETOFFSET_PIXEL(dib, x, y);
int i;
/* top */
for (i = 0; i < w; i++) {
*((DWORD *)dst + i) = col;
}
/* side */
h-=2;
for (i = 0; i < h; i++) {
dst += dib->bytes_per_line;
*((DWORD *)dst) = col;
*((DWORD *)dst + w - 1) = col;
}
/* bottom */
dst += dib->bytes_per_line;
for (i = 0; i < w; i++) {
*((DWORD *)dst + i) = col;
}
}
static void image_fillRectangle24(agsurface_t *dib, int x, int y, int w, int h, int col) {
BYTE *_dst, *dst = GETOFFSET_PIXEL(dib, x, y);
int i;
_dst = dst;
for (i = 0; i < w; i++) {
*((DWORD *)dst + i) = col;
}
for (i = 0; i < h -1; i++) {
dst += dib->bytes_per_line;
memcpy(dst, _dst, w * 4);
}
}
static void image_copyArea24(agsurface_t *dib, int sx, int sy, int w, int h, int dx, int dy) {
BYTE *src = GETOFFSET_PIXEL(dib, sx, sy);
BYTE *dst = GETOFFSET_PIXEL(dib, dx, dy);
if (sy <= dy && dy < (sy + h)) {
src += (h-1) * dib->bytes_per_line;
dst += (h-1) * dib->bytes_per_line;
while (h--) {
memmove(dst, src, w * 4);
src -= dib->bytes_per_line;
dst -= dib->bytes_per_line;
}
} else {
while(h--) {
memmove(dst, src, w * 4);
src += dib->bytes_per_line;
dst += dib->bytes_per_line;
}
}
}
static void image_getGlyphImage24to24(agsurface_t *dib, agsurface_t *glyph, int dx, int dy, int col) {
int x, y;
BYTE *dst = GETOFFSET_PIXEL(dib, dx, dy);
BYTE *src = (BYTE *)glyph->pixel;
DWORD *yd;
DWORD *ys;
for (y = 0; y < glyph->height; y++) {
ys = (DWORD *)(src + y * glyph->bytes_per_line);
yd = (DWORD *)(dst + y * dib->bytes_per_line);
for (x = 0; x < glyph->width; x++) {
if (*ys != 0) {
*yd = col;
}
ys++; yd++;
}
}
}
static void image_wrapColor24(agsurface_t *dib, BYTE *dst, int w, int h, int col, int rate) {
int x, y;
DWORD *yls, yld;
yld = trans_index2pixel(dib->depth, col);
for (y = 0; y < h; y++) {
yls = (DWORD *)(dst + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yls = ALPHABLEND24(yld, *yls, rate);
yls++;
}
}
}
static void image_copyAreaSP16_shadow24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, BYTE *adata, int lv) {
int x, y;
DWORD *yls, *yld;
BYTE *yla;
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
yla = (BYTE *)(adata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = ALPHABLEND24(*yls, *yld, (*yla * lv) / 255);
yls++; yld++; yla++;
}
}
}
static void image_copyAreaSP16_transparent24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, int pal) {
int x, y;
DWORD *yls, *yld;
DWORD yla = trans_index2pixel(dib->depth, pal) & 0xf0f0f0;
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
if ((*yls & 0xf0f0f0) != yla) {
*yld = *yls;
}
yls++; yld++;
}
}
}
static void image_copyAreaSP16_alphaBlend24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, int lv) {
int x, y;
DWORD *yls, *yld;
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = ALPHABLEND24(*yls, *yld, lv);
yls++; yld++;
}
}
}
static void image_copyAreaSP16_alphaLevel24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, int lv) {
int x, y;
DWORD *yls, *yld;
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = ALPHALEVEL24(*yls, lv);
yls++; yld++;
}
}
}
static void image_copyAreaSP16_whiteLevel24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, int lv) {
int x, y;
DWORD *yls, *yld;
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = WHITELEVEL24(*yls, lv);
yls++; yld++;
}
}
}
static void image_copy_from_alpha24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, ALPHA_DIB_COPY_TYPE flag) {
int x, y;
BYTE *yls;
DWORD *yld;
switch(flag) {
case TO_16H:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
/* *yld = */
yld++; yls++;
}
}
break;
case TO_16L:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
/* *yld = (WORD)(*yls) | (*yld & 0xff00); */
yld++; yls++;
}
}
break;
case TO_24R:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX24(*yls, PIXG24(*yld), PIXB24(*yld));
yld++; yls++;
}
}
break;
case TO_24G:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX24(PIXR24(*yls), *yls, PIXB24(*yld));
yld++; yls++;
}
}
break;
case TO_24B:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (DWORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX24(PIXR24(*yld), PIXG24(*yld), *yls);
yld++; yls++;
}
}
break;
default:
break;
}
}
static void image_copy_to_alpha24(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, ALPHA_DIB_COPY_TYPE flag) {
int x, y;
BYTE *yld;
DWORD *yls;
switch(flag) {
case FROM_16H:
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)(PIX16(PIXR24(*yls), PIXG24(*yls), PIXB24(*yls)) >> 8);
yld++; yls++;
}
}
break;
case FROM_16L:
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)(PIX16(PIXR24(*yls), PIXG24(*yls), PIXB24(*yls)));
yld++; yls++;
}
}
break;
case FROM_24R:
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)PIXR24(*yls);
yld++; yls++;
}
}
break;
case FROM_24G:
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)PIXG24(*yls);
yld++; yls++;
}
}
break;
case FROM_24B:
for (y = 0; y < h; y++) {
yls = (DWORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)PIXB24(*yls);
yld++; yls++;
}
}
break;
default:
break;
}
}
void image_draw_antialiased_pattern24(agsurface_t *dib, agsurface_t *pattern, int dx, int dy, int dw, int dh, int col) {
int x, y;
BYTE *dst = GETOFFSET_PIXEL(dib, dx, dy);
BYTE *src = (BYTE *)pattern->pixel;
DWORD *yd;
BYTE *ys;
for (y = 0; y < dh; y++) {
ys = (BYTE *)(src + y * pattern->bytes_per_line);
yd = (DWORD *)(dst + y * dib->bytes_per_line);
for (x = 0; x < dw; x++) {
if (*ys) {
*yd = ALPHABLEND24(col, *yd, (BYTE)*ys);
}
ys++; yd++;
}
}
}
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