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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/* SCI1 palette resource defrobnicator */
#include "common/file.h"
#include "sci/sci_memory.h"
#include "sci/gfx/gfx_system.h"
#include "sci/gfx/gfx_resource.h"
namespace Sci {
#define MAX_COLORS 256
#define PALETTE_START 260
#define COLOR_OK 0x01
#define SCI_PAL_FORMAT_VARIABLE_FLAGS 0
#define SCI_PAL_FORMAT_CONSTANT_FLAGS 1
gfx_pixmap_color_t *gfxr_read_pal11(int id, int *colors_nr, byte *resource, int size) {
int start_color = resource[25];
int format = resource[32];
int entry_size = 0;
gfx_pixmap_color_t *retval;
byte *pal_data = resource + 37;
int _colors_nr = *colors_nr = READ_LE_UINT16(resource + 29);
int i;
switch (format) {
case SCI_PAL_FORMAT_VARIABLE_FLAGS :
entry_size = 4;
break;
case SCI_PAL_FORMAT_CONSTANT_FLAGS :
entry_size = 3;
break;
}
retval = (gfx_pixmap_color_t *)sci_malloc(sizeof(gfx_pixmap_color_t) * (_colors_nr + start_color));
memset(retval, 0, sizeof(gfx_pixmap_color_t) * (_colors_nr + start_color));
for (i = 0; i < start_color; i ++) {
retval[i].global_index = GFX_COLOR_INDEX_UNMAPPED;
retval[i].r = 0;
retval[i].g = 0;
retval[i].b = 0;
}
for (i = start_color; i < start_color + _colors_nr; i ++) {
switch (format) {
case SCI_PAL_FORMAT_CONSTANT_FLAGS:
retval[i].global_index = GFX_COLOR_INDEX_UNMAPPED;
retval[i].r = pal_data[0];
retval[i].g = pal_data[1];
retval[i].b = pal_data[2];
break;
case SCI_PAL_FORMAT_VARIABLE_FLAGS:
retval[i].global_index = GFX_COLOR_INDEX_UNMAPPED;
retval[i].r = pal_data[1];
retval[i].g = pal_data[2];
retval[i].b = pal_data[3];
break;
}
pal_data += entry_size;
}
return retval;
}
gfx_pixmap_color_t *gfxr_read_pal1(int id, int *colors_nr, byte *resource, int size) {
int counter = 0;
int pos;
unsigned int colors[MAX_COLORS] = {0};
gfx_pixmap_color_t *retval;
if (size < PALETTE_START + 4) {
GFXERROR("Palette resource too small in %04x\n", id);
return NULL;
}
pos = PALETTE_START;
while (pos < size/* && resource[pos] == COLOR_OK && counter < MAX_COLORS*/) {
int color = resource[pos] | (resource[pos + 1] << 8) | (resource[pos + 2] << 16) | (resource[pos + 3] << 24);
pos += 4;
colors[counter++] = color;
}
if (counter < MAX_COLORS && resource[pos] != COLOR_OK) {
GFXERROR("Palette %04x uses unknown palette color prefix 0x%02x at offset 0x%04x\n", id, resource[pos], pos);
return NULL;
}
if (counter < MAX_COLORS) {
GFXERROR("Palette %04x ends prematurely\n", id);
return NULL;
}
retval = (gfx_pixmap_color_t*)sci_malloc(sizeof(gfx_pixmap_color_t) * counter);
*colors_nr = counter;
for (pos = 0; pos < counter; pos++) {
unsigned int color = colors[pos];
retval[pos].global_index = GFX_COLOR_INDEX_UNMAPPED;
retval[pos].r = (color >> 8) & 0xff;
retval[pos].g = (color >> 16) & 0xff;
retval[pos].b = (color >> 24) & 0xff;
}
return retval;
}
gfx_pixmap_color_t *gfxr_read_pal1_amiga(int *colors_nr, Common::File &file) {
int i;
gfx_pixmap_color_t *retval;
retval = (gfx_pixmap_color_t *)sci_malloc(sizeof(gfx_pixmap_color_t) * 32);
for (i = 0; i < 32; i++) {
int b1, b2;
b1 = file.readByte();
b2 = file.readByte();
if (b1 == EOF || b2 == EOF) {
GFXERROR("Palette file ends prematurely\n");
return NULL;
}
retval[i].global_index = GFX_COLOR_INDEX_UNMAPPED;
retval[i].r = (b1 & 0xf) * 0x11;
retval[i].g = ((b2 & 0xf0) >> 4) * 0x11;
retval[i].b = (b2 & 0xf) * 0x11;
}
*colors_nr = 32;
return retval;
}
} // End of namespace Sci
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