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/* ScummVM - Scumm Interpreter
* Dreamcast port
* Copyright (C) 2002 Marcus Comstedt
*
* 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.
*
* $Header$
*
*/
#include <ronin/ronin.h>
#include <string.h>
#include "icon.h"
void Icon::create_vmicon(void *buffer)
{
unsigned short *pal = (unsigned short *)buffer;
unsigned char *pix = ((unsigned char *)buffer)+32;
for(int n = 0; n<16; n++) {
int p = palette[n];
pal[n] =
((p>>16)&0xf000)|
((p>>12)&0x0f00)|
((p>> 8)&0x00f0)|
((p>> 4)&0x000f);
}
for(int line = 0; line < 32; line++) {
memcpy(pix, &bitmap[32/2*(31-line)], 32/2);
pix += 32/2;
}
}
void Icon::create_texture()
{
static char tt[16] = { 0, 1, 4, 5, 16, 17, 20, 21,
64, 65, 68, 69, 80, 81, 84, 85 };
unsigned short *tex = (unsigned short *)ta_txalloc(512);
unsigned short *linebase;
unsigned char *src = bitmap+sizeof(bitmap)-17;
for(int y=0; y<16; y++) {
linebase = tex + (tt[y]<<1);
for(int x=0; x<16; x++, --src)
linebase[tt[x]] = src[16]|(src[0]<<8);
src -= 16;
}
texture = tex;
}
void Icon::set_palette(int pal)
{
unsigned int (*hwpal)[64][16] = (unsigned int (*)[64][16])0xa05f9000;
for(int n = 0; n<16; n++)
(*hwpal)[pal][n] = palette[n];
}
void Icon::draw(float x1, float y1, float x2, float y2, int pal,
unsigned int argb)
{
struct polygon_list mypoly;
struct packed_colour_vertex_list myvertex;
mypoly.cmd =
TA_CMD_POLYGON|TA_CMD_POLYGON_TYPE_TRANSPARENT|TA_CMD_POLYGON_SUBLIST|
TA_CMD_POLYGON_STRIPLENGTH_2|TA_CMD_POLYGON_PACKED_COLOUR|TA_CMD_POLYGON_TEXTURED;
mypoly.mode1 = TA_POLYMODE1_Z_ALWAYS|TA_POLYMODE1_NO_Z_UPDATE;
mypoly.mode2 =
TA_POLYMODE2_BLEND_SRC_ALPHA|TA_POLYMODE2_BLEND_DST_INVALPHA|
TA_POLYMODE2_FOG_DISABLED|TA_POLYMODE2_ENABLE_ALPHA|
TA_POLYMODE2_TEXTURE_MODULATE_ALPHA|TA_POLYMODE2_U_SIZE_32|
TA_POLYMODE2_V_SIZE_32;
mypoly.texture = TA_TEXTUREMODE_CLUT4|TA_TEXTUREMODE_CLUTBANK4(pal)|
TA_TEXTUREMODE_ADDRESS(texture);
mypoly.red = mypoly.green = mypoly.blue = mypoly.alpha = 0;
ta_commit_list(&mypoly);
myvertex.cmd = TA_CMD_VERTEX;
myvertex.ocolour = 0;
myvertex.colour = argb;
myvertex.z = 0.5;
myvertex.u = 0.0;
myvertex.v = 1.0;
myvertex.x = x1;
myvertex.y = y1;
ta_commit_list(&myvertex);
myvertex.x = x2;
myvertex.v = 0.0;
ta_commit_list(&myvertex);
myvertex.x = x1;
myvertex.y = y2;
myvertex.u = 1.0;
myvertex.v = 1.0;
ta_commit_list(&myvertex);
myvertex.x = x2;
myvertex.v = 0.0;
myvertex.cmd |= TA_CMD_VERTEX_EOS;
ta_commit_list(&myvertex);
}
int Icon::find_unused_pixel()
{
int use[16];
memset(use, 0, sizeof(use));
for(int n=0; n<32*32/2; n++) {
unsigned char pix = bitmap[n];
use[pix&0xf]++;
use[pix>>4]++;
}
for(int i=0; i<16; i++)
if(!use[i])
return i;
return -1;
}
bool Icon::load_image2(void *data, int len)
{
struct {
int size, w, h;
short pla, bitcnt;
int comp, sizeimg, xres, yres, used, imp;
} hdr;
if(len < 40)
return false;
memcpy(&hdr, data, 40);
if(hdr.size != 40 || hdr.sizeimg<=0 || hdr.w<0 || hdr.h<0 ||
hdr.bitcnt<0 || hdr.used<0)
return false;
if(!hdr.used)
hdr.used = 1<<hdr.bitcnt;
hdr.h >>= 1;
/* Fix incorrect sizeimg (The Dig) */
if(hdr.sizeimg < ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3))
hdr.sizeimg = ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3);
if(hdr.size + (hdr.used<<2) + hdr.sizeimg > len /* ||
hdr.sizeimg < ((hdr.w*hdr.h*(1+hdr.bitcnt)+7)>>3) */)
return false;
if(hdr.w != 32 || hdr.h != 32 || hdr.bitcnt != 4 || hdr.used > 16)
return false;
memcpy(palette, ((char *)data)+hdr.size, hdr.used<<2);
memcpy(bitmap, ((char *)data)+hdr.size+(hdr.used<<2), 32*32/2);
for(int i=0; i<16; i++)
palette[i] |= 0xff000000;
for(int i=hdr.used; i<16; i++)
palette[i] = 0;
int unused = find_unused_pixel();
if(unused >= 0) {
unsigned char *mask =
((unsigned char *)data)+hdr.size+(hdr.used<<2)+32*32/2;
unsigned char *pix = bitmap;
for(int y=0; y<32; y++)
for(int x=0; x<32/8; x++) {
unsigned char mbits = *mask++;
for(int z=0; z<4; z++) {
unsigned char pbits = *pix;
if(mbits & 64) pbits = (pbits & ~0xf) | unused;
if(mbits & 128) pbits = (pbits & 0xf) | (unused << 4);
*pix++ = pbits;
mbits <<= 2;
}
}
palette[unused] = 0;
}
return true;
}
bool Icon::load_image1(void *data, int len, int offs)
{
struct {
char w, h, colors, rsrv;
short pla, bitcnt;
int bytes, offs;
} hdr;
if(len < offs+16)
return false;
memcpy(&hdr, ((char *)data)+offs, 16);
if(hdr.bytes > 0 && hdr.offs >= 0 && hdr.offs+hdr.bytes <= len)
return load_image2(((char *)data)+hdr.offs, hdr.bytes);
else
return false;
}
bool Icon::load(void *data, int len, int offs)
{
struct { short rsrv, type, cnt; } hdr;
memset(bitmap, 0, sizeof(bitmap));
memset(palette, 0, sizeof(palette));
texture = NULL;
if(len < offs+6)
return false;
memcpy(&hdr, ((char *)data)+offs, 6);
if(hdr.type != 1 || hdr.cnt < 1 || offs+6+(hdr.cnt<<4) > len)
return false;
for(int i=0; i<hdr.cnt; i++)
if(load_image1(data, len, offs+6+(i<<4)))
return true;
return false;
}
bool Icon::load(const char *filename)
{
char buf[2048];
int fd;
if((fd = open(filename, O_RDONLY))>=0) {
int sz;
sz = read(fd, buf, sizeof(buf));
close(fd);
if(sz>0)
return load(buf, sz);
}
return false;
}
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