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kichikuou_xsystem35-sdl2/src/image.c
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/*
* image.c image操作
*
* 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
*
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "portab.h"
#include "system.h"
#include "image.h"
#include "cg.h"
#include "config.h"
#include "nact.h"
#include "sdl_core.h"
#include "alpha_plane.h"
#include "ags.h"
/* fader */
static const int fadeX[16] = {0,2,2,0,1,3,3,1,1,3,3,1,0,2,2,0};
static const int fadeY[16] = {0,2,0,2,1,3,1,3,0,2,0,2,1,3,1,3};
static void (*copy_from_alpha)(agsurface_t *, BYTE *, BYTE *, int, int, ALPHA_DIB_COPY_TYPE);
static void (*copy_to_alpha)(agsurface_t *, BYTE *, BYTE *, int, int, ALPHA_DIB_COPY_TYPE);
/******************************************************************************/
/* private methods image操作 16bpp */
/******************************************************************************/
static void fadeOut16(SDL_Surface *dst, int lv, int col) {
WORD *yld;
int x, y;
for (y = 0; y < dst->h; y += 4) {
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < dst->w; x += 4) {
*(yld + fadeX[lv]) = col;
yld += 4;
}
}
}
static void fadeIn16(SDL_Surface *src, SDL_Surface *dst, int lv) {
WORD *yls, *yld;
int x, y;
for (y = 0; y < src->h; y += 4) {
yls = PIXEL_AT(src, 0, y + fadeY[lv]);
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < src->w; x += 4) {
*(yld + fadeX[lv]) = *(yls + fadeX[lv]);
yls += 4; yld += 4;
}
}
}
static void image_copy_from_alpha16(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, ALPHA_DIB_COPY_TYPE flag) {
int x, y;
BYTE *yls;
WORD *yld;
switch(flag) {
case TO_16H:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (WORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = (WORD)(*yls << 8) | (*yld & 0xff);
yld++; yls++;
}
}
break;
case TO_16L:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (WORD *)(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 = (WORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX16(*yls, PIXG16(*yld), PIXB16(*yld));
yld++; yls++;
}
}
break;
case TO_24G:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (WORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX16(PIXR16(*yls), *yls, PIXB16(*yld));
yld++; yls++;
}
}
break;
case TO_24B:
for (y = 0; y < h; y++) {
yls = (BYTE *)(sdata + y * dib->width);
yld = (WORD *)(ddata + y * dib->bytes_per_line);
for (x = 0; x < w; x++) {
*yld = PIX16(PIXR16(*yld), PIXG16(*yld), *yls);
yld++; yls++;
}
}
break;
default:
break;
}
}
static void image_copy_to_alpha16(agsurface_t *dib, BYTE *sdata, BYTE *ddata, int w, int h, ALPHA_DIB_COPY_TYPE flag) {
int x, y;
BYTE *yld;
WORD *yls;
switch(flag) {
case FROM_16H:
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)(*yls >> 8);
yld++; yls++;
}
}
break;
case FROM_16L:
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = (BYTE)(*yls);
yld++; yls++;
}
}
break;
case FROM_24R:
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = PIXR16(*yls);
yld++; yls++;
}
}
break;
case FROM_24G:
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = PIXG16(*yls);
yld++; yls++;
}
}
break;
case FROM_24B:
for (y = 0; y < h; y++) {
yls = (WORD *)(sdata + y * dib->bytes_per_line);
yld = (BYTE *)(ddata + y * dib->width);
for (x = 0; x < w; x++) {
*yld = PIXB16(*yls);
yld++; yls++;
}
}
break;
default:
break;
}
}
/******************************************************************************/
/* private methods image操作 packed 24bpp */
/******************************************************************************/
static void fadeOut24p(SDL_Surface *dst, int lv, int col) {
BYTE *yld;
int x, y;
for (y = 0; y < dst->h; y += 4) {
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < dst->w; x += 4) {
*(yld + fadeX[lv]) =
*(yld + fadeX[lv] +1) =
*(yld + fadeX[lv] +2) = (BYTE)col;
yld += (4*3);
}
}
}
static void fadeIn24p(SDL_Surface *src, SDL_Surface *dst, int lv) {
DWORD *yls;
BYTE *yld;
int x, y;
for (y = 0; y < src->h; y += 4) {
yls = PIXEL_AT(src, 0, y + fadeY[lv]);
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < src->w; x += 4) {
*(yld + fadeX[lv] ) = PIXB24(*(yls + fadeX[lv]));
*(yld + fadeX[lv] +1) = PIXG24(*(yls + fadeX[lv]));
*(yld + fadeX[lv] +2) = PIXR24(*(yls + fadeX[lv]));
yls += 4; yld += (4*3);
}
}
}
/******************************************************************************/
/* private methods image操作 24/32bpp */
/******************************************************************************/
static void fadeOut24(SDL_Surface *dst, int lv, int col) {
DWORD *yld;
int x, y;
for (y = 0; y < dst->h; y += 4) {
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < dst->w; x += 4) {
*(yld + fadeX[lv]) = col;
yld += 4;
}
}
}
static void fadeIn24(SDL_Surface *src, SDL_Surface *dst, int lv) {
DWORD *yls, *yld;
int x, y;
for (y = 0; y < src->h; y += 4) {
yls = PIXEL_AT(src, 0, y + fadeY[lv]);
yld = PIXEL_AT(dst, 0, y + fadeY[lv]);
for (x = 0; x < src->w; x += 4) {
*(yld + fadeX[lv]) = *(yls + fadeX[lv]);
yls += 4; yld += 4;
}
}
}
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;
}
}
/*
* dib の depth に応じた関数の設定
* depth: dib depth
*/
void image_setdepth(int depth) {
switch(depth) {
case 8:
break;
case 16:
copy_from_alpha = image_copy_from_alpha16;
copy_to_alpha = image_copy_to_alpha16;
break;
case 24:
case 32:
copy_from_alpha = image_copy_from_alpha24;
copy_to_alpha = image_copy_to_alpha24;
break;
default:
break;
}
}
/*
fade out for 16/24/32
*/
void image_fadeOut(SDL_Surface *img, int lv, int col) {
switch(img->format->BytesPerPixel) {
case 2:
fadeOut16(img, lv, col); break;
case 3:
fadeOut24p(img, lv, col); break;
case 4:
fadeOut24(img, lv, col); break;
default:
break;
}
}
/*
fade in for 16/24/32
*/
void image_fadeIn(SDL_Surface *src, SDL_Surface *dst, int lv) {
switch(dst->format->BytesPerPixel) {
case 2:
fadeIn16(src, dst, lv); break;
case 3:
fadeIn24p(src, dst, lv); break;
case 4:
fadeIn24(src, dst, lv); break;
default:
break;
}
}
void image_copy_from_alpha(agsurface_t *dib, int sx, int sy, int w, int h, int dx, int dy, ALPHA_DIB_COPY_TYPE flag) {
BYTE *sdata = GETOFFSET_ALPHA(dib, sx, sy);
BYTE *ddata = GETOFFSET_PIXEL(dib, dx, dy);
copy_from_alpha(dib, sdata, ddata, w, h, flag);
}
void image_copy_to_alpha(agsurface_t *dib, int sx, int sy, int w, int h, int dx, int dy, ALPHA_DIB_COPY_TYPE flag) {
BYTE *sdata = GETOFFSET_PIXEL(dib, sx, sy);
BYTE *ddata = GETOFFSET_ALPHA(dib, dx, dy);
copy_to_alpha(dib, sdata, ddata, w, h, flag);
}
/* モザイク */
void image_Mosaic(SDL_Surface *dib, int sx, int sy, int w, int h, int dx, int dy, int slice) {
SDL_Rect r = {.h = slice};
for (int y = 0; y < h; y += slice) {
if (y + slice > h)
r.h = h - y;
r.w = slice;
for (int x = 0; x < w; x += slice) {
void *src = PIXEL_AT(dib, sx + x, sy + y);
Uint32 color;
switch (dib->format->BytesPerPixel) {
case 1: color = *(BYTE *)src; break;
case 2: color = *(WORD *)src; break;
default: color = *(DWORD *)src; break;
}
r.x = dx + x;
r.y = dy + y;
if (r.x + slice > w)
r.w = w - x;
SDL_FillRect(dib, &r, color);
}
}
}
/* 16bitCGの ALPHALEVELを指定 */
BYTE *changeImage16AlphaLevel(cgdata *cg) {
WORD *new_pic = malloc(sizeof(WORD) * cg->width * cg->height), *new_pic_;
WORD *pic = (WORD *)cg->pic;
int pixels = cg->width * cg->height;
new_pic_ = new_pic;
while (pixels--) {
*new_pic = ALPHALEVEL16(*pic, cg->alphalevel);
new_pic++; pic++;
}
return (BYTE *)new_pic_;
}
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