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https://github.com/libretro/scummvm.git
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232 lines
6.0 KiB
C++
232 lines
6.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Dreamcast port
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* Copyright (C) 2002-2004 Marcus Comstedt
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include <ronin/ronin.h>
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#include <string.h>
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#include "icon.h"
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void Icon::create_vmicon(void *buffer)
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{
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unsigned short *pal = (unsigned short *)buffer;
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unsigned char *pix = ((unsigned char *)buffer)+32;
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for(int n = 0; n<16; n++) {
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int p = palette[n];
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pal[n] =
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((p>>16)&0xf000)|
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((p>>12)&0x0f00)|
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((p>> 8)&0x00f0)|
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((p>> 4)&0x000f);
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}
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for(int line = 0; line < 32; line++) {
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memcpy(pix, &bitmap[32/2*(31-line)], 32/2);
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pix += 32/2;
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}
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}
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void Icon::create_texture()
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{
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static char tt[16] = { 0, 1, 4, 5, 16, 17, 20, 21,
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64, 65, 68, 69, 80, 81, 84, 85 };
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unsigned short *tex = (unsigned short *)ta_txalloc(512);
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unsigned short *linebase;
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unsigned char *src = bitmap+sizeof(bitmap)-17;
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for(int y=0; y<16; y++) {
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linebase = tex + (tt[y]<<1);
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for(int x=0; x<16; x++, --src)
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linebase[tt[x]] = src[16]|(src[0]<<8);
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src -= 16;
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}
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texture = tex;
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}
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void Icon::setPalette(int pal)
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{
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unsigned int (*hwpal)[64][16] = (unsigned int (*)[64][16])0xa05f9000;
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for(int n = 0; n<16; n++)
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(*hwpal)[pal][n] = palette[n];
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}
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void Icon::draw(float x1, float y1, float x2, float y2, int pal,
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unsigned int argb)
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{
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struct polygon_list mypoly;
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struct packed_colour_vertex_list myvertex;
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mypoly.cmd =
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TA_CMD_POLYGON|TA_CMD_POLYGON_TYPE_TRANSPARENT|TA_CMD_POLYGON_SUBLIST|
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TA_CMD_POLYGON_STRIPLENGTH_2|TA_CMD_POLYGON_PACKED_COLOUR|TA_CMD_POLYGON_TEXTURED;
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mypoly.mode1 = TA_POLYMODE1_Z_ALWAYS|TA_POLYMODE1_NO_Z_UPDATE;
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mypoly.mode2 =
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TA_POLYMODE2_BLEND_SRC_ALPHA|TA_POLYMODE2_BLEND_DST_INVALPHA|
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TA_POLYMODE2_FOG_DISABLED|TA_POLYMODE2_ENABLE_ALPHA|
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TA_POLYMODE2_TEXTURE_MODULATE_ALPHA|TA_POLYMODE2_U_SIZE_32|
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TA_POLYMODE2_V_SIZE_32;
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mypoly.texture = TA_TEXTUREMODE_CLUT4|TA_TEXTUREMODE_CLUTBANK4(pal)|
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TA_TEXTUREMODE_ADDRESS(texture);
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mypoly.red = mypoly.green = mypoly.blue = mypoly.alpha = 0;
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ta_commit_list(&mypoly);
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myvertex.cmd = TA_CMD_VERTEX;
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myvertex.ocolour = 0;
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myvertex.colour = argb;
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myvertex.z = 0.5;
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myvertex.u = 0.0;
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myvertex.v = 1.0;
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myvertex.x = x1;
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myvertex.y = y1;
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ta_commit_list(&myvertex);
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myvertex.x = x2;
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myvertex.v = 0.0;
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ta_commit_list(&myvertex);
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myvertex.x = x1;
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myvertex.y = y2;
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myvertex.u = 1.0;
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myvertex.v = 1.0;
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ta_commit_list(&myvertex);
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myvertex.x = x2;
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myvertex.v = 0.0;
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myvertex.cmd |= TA_CMD_VERTEX_EOS;
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ta_commit_list(&myvertex);
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}
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int Icon::find_unused_pixel()
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{
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int use[16];
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memset(use, 0, sizeof(use));
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for(int n=0; n<32*32/2; n++) {
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unsigned char pix = bitmap[n];
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use[pix&0xf]++;
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use[pix>>4]++;
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}
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for(int i=0; i<16; i++)
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if(!use[i])
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return i;
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return -1;
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}
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bool Icon::load_image2(const void *data, int len)
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{
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struct {
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int size, w, h;
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short pla, bitcnt;
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int comp, sizeimg, xres, yres, used, imp;
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} hdr;
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if(len < 40)
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return false;
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memcpy(&hdr, data, 40);
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if(hdr.size != 40 || hdr.sizeimg<=0 || hdr.w<0 || hdr.h<0 ||
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hdr.bitcnt<0 || hdr.used<0)
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return false;
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if(!hdr.used)
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hdr.used = 1<<hdr.bitcnt;
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hdr.h >>= 1;
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/* Fix incorrect sizeimg (The Dig) */
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if(hdr.sizeimg < ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3))
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hdr.sizeimg = ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3);
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if(hdr.size + (hdr.used<<2) + hdr.sizeimg > len /* ||
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hdr.sizeimg < ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3) */)
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return false;
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if(hdr.w != 32 || hdr.h != 32 || hdr.bitcnt != 4 || hdr.used > 16)
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return false;
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memcpy(palette, ((const char *)data)+hdr.size, hdr.used<<2);
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memcpy(bitmap, ((const char *)data)+hdr.size+(hdr.used<<2), 32*32/2);
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for(int i=0; i<16; i++)
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palette[i] |= 0xff000000;
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for(int i=hdr.used; i<16; i++)
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palette[i] = 0;
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int unused = find_unused_pixel();
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if(unused >= 0) {
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const unsigned char *mask =
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((const unsigned char *)data)+hdr.size+(hdr.used<<2)+32*32/2;
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unsigned char *pix = bitmap;
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for(int y=0; y<32; y++)
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for(int x=0; x<32/8; x++) {
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unsigned char mbits = *mask++;
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for(int z=0; z<4; z++) {
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unsigned char pbits = *pix;
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if(mbits & 64) pbits = (pbits & ~0xf) | unused;
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if(mbits & 128) pbits = (pbits & 0xf) | (unused << 4);
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*pix++ = pbits;
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mbits <<= 2;
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}
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}
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palette[unused] = 0;
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}
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return true;
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}
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bool Icon::load_image1(const void *data, int len, int offs)
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{
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struct {
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char w, h, colors, rsrv;
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short pla, bitcnt;
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int bytes, offs;
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} hdr;
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if(len < offs+16)
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return false;
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memcpy(&hdr, ((const char *)data)+offs, 16);
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if(hdr.bytes > 0 && hdr.offs >= 0 && hdr.offs+hdr.bytes <= len)
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return load_image2(((const char *)data)+hdr.offs, hdr.bytes);
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else
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return false;
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}
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bool Icon::load(const void *data, int len, int offs)
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{
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struct { short rsrv, type, cnt; } hdr;
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memset(bitmap, 0, sizeof(bitmap));
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memset(palette, 0, sizeof(palette));
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texture = NULL;
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if(len < offs+6)
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return false;
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memcpy(&hdr, ((const char *)data)+offs, 6);
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if(hdr.type != 1 || hdr.cnt < 1 || offs+6+(hdr.cnt<<4) > len)
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return false;
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for(int i=0; i<hdr.cnt; i++)
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if(load_image1(data, len, offs+6+(i<<4)))
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return true;
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return false;
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}
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bool Icon::load(const char *filename)
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{
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char buf[2048];
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int fd;
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if((fd = open(filename, O_RDONLY))>=0) {
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int sz;
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sz = read(fd, buf, sizeof(buf));
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close(fd);
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if(sz>0)
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return load(buf, sz);
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}
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return false;
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}
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