ScummVM/scummex
1
0
Fork 0
mirror of https://github.com/scummvm/scummex.git synced 2026-05-21 05:40:51 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
master
scummex/image.cpp
T
Eugene Sandulenko 78cb745305 o Proper handling of IACT chunks. Now scummex distinguishes between 
iMUSE and INSANE IACT and gives more info for INSANE
o SKIP chunks support
o Show resource number on each level. Now you can easily find Room #50
o AKOS chunks descriptions and display some additional info
2004-02-14 20:51:11 +00:00

1036 lines
24 KiB
C++
Raw Permalink Blame History

/* ScummEX - Viewer for Scumm data files
* Copyright (C) 2003 Adrien Mercier
* Copyright (C) 2003 The ScummVM project
*
* 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: /Users/sev/projects/sc/s/scummvm/scummex/image.cpp,v 1.26 2004/02/14 20:51:10 sev Exp $
*
*/
#include "file.h"
#include "resource.h"
#include "image.h"
#include "scaler.h"
uint32 offset;
Image::Image() {
_transp = 0;
_width = 0;
_height = 0;
_resource = new Resource();
}
Image::~Image() {
delete _resource;
}
void Image::setupEGAPalette() {
setPalColor( 0, 0, 0, 0);
setPalColor( 1, 0, 0, 168);
setPalColor( 2, 0, 168, 0);
setPalColor( 3, 0, 168, 168);
setPalColor( 4, 168, 0, 0);
setPalColor( 5, 168, 0, 168);
setPalColor( 6, 168, 84, 0);
setPalColor( 7, 168, 168, 168);
setPalColor( 8, 84, 84, 84);
setPalColor( 9, 84, 84, 252);
setPalColor(10, 84, 252, 84);
setPalColor(11, 84, 252, 252);
setPalColor(12, 252, 84, 84);
setPalColor(13, 252, 84, 252);
setPalColor(14, 252, 252, 84);
setPalColor(15, 252, 252, 252);
}
void Image::setPalColor(int idx, int r, int g, int b) {
_rgbTable[idx].red = r;
_rgbTable[idx].green = g;
_rgbTable[idx].blue = b;
}
void Image::drawPalette(BlockTable *_blockTable, int id, File& _input)
{
int addindex = 0;
int index = 0;
unsigned int h;
if (_blockTable[id].image == NULL)
_image = _blockTable[id].image = new ImageWindow("Block Palette", wxSize(384, 384), id, FLAG_NONE, 1);
else
_image = _blockTable[id].image;
_input.seek(_blockTable[id].offset + 8, SEEK_SET);
if (_blockTable[id].blockTypeID == AHDR)
_input.seek(6, SEEK_CUR);
if (_blockTable[id].blockTypeID == RGBS) {
for (h = 0; h < (_blockTable[id].blockSize - 8) / 3; h++) {
_rgbTable[h].red = _input.readByte(); // red
_rgbTable[h].green = _input.readByte(); // green
_rgbTable[h].blue = _input.readByte(); // blue
}
for (; h < 256; h++) {
_rgbTable[h].red = 255;
_rgbTable[h].green = 255;
_rgbTable[h].blue = 255;
}
} else {
for (int j = 0; j < 256; j++) {
_rgbTable[j].red = _input.readByte(); // red
_rgbTable[j].green = _input.readByte(); // green
_rgbTable[j].blue = _input.readByte(); // blue
}
}
int x = 0, y = 0;
for (int v = 0; v < 16; v++) {
for (int k = 0; k < 384 / 16; k++) {
for (int l = 0; l < 16; l++) {
for (int j = 0; j < 384 / 16; j++) {
index = l + addindex;
_image->PutPixel(x++, y, _rgbTable[index].red, _rgbTable[index].green, _rgbTable[index].blue);
}
}
y++;
x = 0;
}
addindex += 16;
}
_image->DrawImage();
}
void Image::drawLine(int xStart, int yStart, int xEnd, int yEnd, int red, int green, int blue) {
int i, len, xlen, ylen;
double x, xinc, y, yinc;
if (xStart == xEnd && yStart == yEnd) {
_image->PutPixel(xEnd, yEnd, red, green, blue);
return;
}
xlen = xEnd - xStart;
ylen = yEnd - yStart;
if (abs(xlen) > abs(ylen)) {
len = abs(xlen);
} else {
len = abs(ylen);
}
xinc = xlen / (double) len;
yinc = ylen / (double) len;
x = xStart + 0.5;
y = yStart + 0.5;
for (i=0; i<=len; ++i) {
_image->PutPixel((int)x, (int)y, red, green, blue);
x += xinc;
y += yinc;
}
}
void Image::drawBoxes(BlockTable *_blockTable, int id, File& _input) {
int nBox, headerID, version = 5;
if (_blockTable[id].blockTypeID == BM || _blockTable[id].blockTypeID == BX) {
version = 3;
headerID = _resource->findBlock(0, _blockTable, id, "HD", NULL);
} else {
headerID = _resource->findBlock(0, _blockTable, id, "RMHD", NULL);
}
_width = _blockTable[headerID].width;
_height = _blockTable[headerID].height;
if ( _resource->findBlock(0, _blockTable, id, "IMAG", NULL) != -1) {
version = 8;
} else if ( version > 3 && _resource->findBlock(0, _blockTable, id, "PALS", NULL) != -1) {
version = 7;
}
if (_blockTable[id].image == NULL)
_image = _blockTable[id].image = new ImageWindow("Boxes", wxSize(_width, _height), id, IMAGE_SCALE);
else
_image = _blockTable[id].image;
if (_blockTable[id].blockTypeID != BOXD && _blockTable[id].blockTypeID != BX) {
if (version > 5) {
id = _resource->findBlock(1, _blockTable, id, "BOXD", NULL);
} else {
id = _resource->findBlock(0, _blockTable, id, "BOXD", "BX", NULL);
}
}
if (version == 8) {
_input.seek(_blockTable[id].offset + 12, SEEK_SET);
} else if (version > 3) {
_input.seek(_blockTable[id].offset + 10, SEEK_SET);
} else {
_input.seek(_blockTable[id].offset + 7, SEEK_SET);
}
nBox = _blockTable[id].numFiles;
if (version == 8) {
for (int i=0; i<nBox; i++) {
_points[i][0].x = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][0].y = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][1].x = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][1].y = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][2].x = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][2].y = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][3].x = (short)_input.readUint32LE() * _image->_scaleFactor;
_points[i][3].y = (short)_input.readUint32LE() * _image->_scaleFactor;
_input.seek(20, SEEK_CUR);
}
} else if (version == 3 && _resource->findBlock(0, _blockTable, id, "LF", NULL) == -1 && _resource->findBlock(1, _blockTable, id, "PA", NULL) != -1) {
for (int i=0; i<nBox; i++) {
_points[i][0].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][0].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][1].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][1].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][2].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][2].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][3].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][3].y = _input.readUint16LE() * _image->_scaleFactor;
_input.readUint16LE();
}
} else {
for (int i=0; i<nBox; i++) {
_points[i][0].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][0].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][1].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][1].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][2].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][2].y = _input.readUint16LE() * _image->_scaleFactor;
_points[i][3].x = _input.readUint16LE() * _image->_scaleFactor;
_points[i][3].y = _input.readUint16LE() * _image->_scaleFactor;
_input.readUint16LE();
_input.readUint16LE();
}
}
for (int i=0; i<nBox; i++) {
for (int j=0; j<3; j++) {
drawLine(_points[i][j].x, _points[i][j].y, _points[i][j+1].x, _points[i][j+1].y, 255, 255, 255);
}
drawLine(_points[i][3].x, _points[i][3].y, _points[i][0].x, _points[i][0].y, 255, 255, 255);
}
_image->DrawImage();
}
void Image::drawSmushFrame(BlockTable *_blockTable, int id, File& _input) {
int index;
int x = 0, y = 0;
byte *dst, *dstorg, *chunk_buffer, *dstFinal;
index = _resource->findBlock(0, _blockTable, id, "NPAL", "AHDR", NULL);
if (_blockTable[index].blockTypeID == AHDR) {
_input.seek(_blockTable[index].offset + 14, SEEK_SET);
} else {
_input.seek(_blockTable[index].offset + 8, SEEK_SET);
}
for (int j = 0; j < 256; j++) {
_rgbTable[j].red = _input.readByte();
_rgbTable[j].green = _input.readByte();
_rgbTable[j].blue = _input.readByte();
}
_width = _blockTable[id].width;
_height = _blockTable[id].height;
if (_blockTable[id].image == NULL)
_image = _blockTable[id].image = new ImageWindow("SMUSH Frame", wxSize(_width, _height), id, IMAGE_SCALE);
else
_image = _blockTable[id].image;
_input.seek(_blockTable[id].offset + 22, SEEK_SET);
_codec37.init(_width, _height);
_codec47.init(_width, _height);
chunk_buffer = (byte *)malloc(_blockTable[id].blockSize - 22);
dstorg = dst = (byte *)malloc(_width * _height + 1000);
_input.read(chunk_buffer, _blockTable[id].blockSize - 22);
switch (_blockTable[id].variables[0]) {
case 1:
decodeCodec1(dst, chunk_buffer, _height);
break;
case 37:
_codec37.decode(dst, chunk_buffer);
break;
case 44:
case 21:
decodeCodec44(dst, chunk_buffer, _blockTable[id].blockSize - 22);
break;
case 47:
_codec47.decode(dst, chunk_buffer);
break;
}
free(chunk_buffer);
if (_image->_scaleFactor > 1) {
dstorg = dstFinal = (byte *)malloc((_width * _image->_scaleFactor) * (_height * _image->_scaleFactor));
scale(_image->_scaleFactor, dst, _width, dstFinal, _width * _image->_scaleFactor, _width, _height);
free(dst);
} else {
dstFinal = dst;
}
for (y=0; y<_height * _image->_scaleFactor; y++) {
for (x=0; x<_width * _image->_scaleFactor; x++) {
int color = *dstFinal++;
_image->PutPixel(x, y, _rgbTable[color].red, _rgbTable[color].green, _rgbTable[color].blue);
}
}
free(dstorg);
_image->DrawImage();
}
void Image::drawBG(File& _input, BlockTable *_blockTable, int id)
{
int headerID, paletteID, dataID, version;
int32 blockSize;
byte *dst, *dstorg, *src, *dstFinal;
if (_blockTable[id].blockTypeID == BM) {
version = 3;
headerID = _resource->findBlock(0, _blockTable, id, "HD", NULL);
} else if (_blockTable[id-1].blockTypeID == IMHD) {
version = 8;
headerID = id-1;
} else {
version = 5;
headerID = _resource->findBlock(0, _blockTable, id, "RMHD", NULL);
}
_width = _blockTable[headerID].width;
_height = _blockTable[headerID].height;
if (_blockTable[id].image == NULL)
_image = _blockTable[id].image = new ImageWindow("Room Image", wxSize(_width, _height), id, IMAGE_BOXES|IMAGE_SCALE);
else
_image = _blockTable[id].image;
if (version > 4) {
paletteID = _resource->findBlock(0, _blockTable, id, "CLUT", "APAL", "NPAL", NULL);
_input.seek(_blockTable[paletteID].offset + 8, SEEK_SET);
} else {
_transp = 260;
paletteID = _resource->findBlock(0, _blockTable, id, "PA", NULL);
if (paletteID != -1) {
version = 4;
_input.seek(_blockTable[paletteID].offset + 8, SEEK_SET);
} else {
version = 3;
}
}
if (version > 3) {
for (int j = 0; j < 256; j++) {
_rgbTable[j].red = _input.readByte();
_rgbTable[j].green = _input.readByte();
_rgbTable[j].blue = _input.readByte();
}
} else {
setupEGAPalette();
}
if (version > 4) {
dataID = _resource->findBlock(1, _blockTable, id, "SMAP", NULL);
} else {
dataID = id;
}
blockSize = _blockTable[dataID].blockSize;
if (_blockTable[id].blockTypeID == IMAG) {
version = 8;
dataID = _resource->findBlock(1, _blockTable, dataID, "OFFS", NULL);
blockSize = _blockTable[dataID-1].blockSize - 8;
}
_offsets = new uint32[_width/8];
_input.seek(_blockTable[dataID].offset + 8, SEEK_SET);
if (version > 4) {
for (int x = 0; x < _width/8; x++)
_offsets[x] = _input.readUint32LE();
} else if (version == 4) {
for (int x = 0; x < _width/8; x++) {
_input.seek(2, SEEK_CUR);
_offsets[x] = _input.readUint16LE() + 6;
}
} else {
for (int x = 0; x < _width/8; x++)
_offsets[x] = _input.readUint16LE() + 6;
}
_input.seek(_blockTable[dataID].offset, SEEK_SET);
dstorg = dst = (byte *)malloc(_width * _height);
src = (byte *)malloc(blockSize);
_input.read(src, blockSize);
for (int x = 0; x < _width/8; x++) {
if (version < 4)
decodeStripEGA(dst + (8 * x), src + _offsets[x], _height);
else
GetStrip(dst + (8 * x), src + _offsets[x], _height);
}
free(src);
if (_image->_scaleFactor > 1) {
dstorg = dstFinal = (byte *)malloc((_width * _image->_scaleFactor) * (_height * _image->_scaleFactor));
scale(_image->_scaleFactor, dst, _width, dstFinal, _width * _image->_scaleFactor, _width, _height);
free(dst);
} else {
dstFinal = dst;
}
for (int y=0; y<_height * _image->_scaleFactor; y++) {
for (int x=0; x<_width * _image->_scaleFactor; x++) {
int color = *dstFinal++;
_blockTable[id].image->PutPixel(x, y, _rgbTable[color].red, _rgbTable[color].green, _rgbTable[color].blue);
}
}
free(dstorg);
_image->DrawImage();
}
void Image::drawObject(File& _input, BlockTable *_blockTable, int id)
{
int headerID, paletteID, dataID, version = 5;
byte *dst, *dstorg, *src, *dstFinal;
if (_blockTable[id].blockTypeID == OBIM) {
headerID = _resource->findBlock(1, _blockTable, id, "IMHD", NULL);
} else if (_blockTable[id].blockTypeID == OI) {
version = 3;
headerID = id;
while (1) {
headerID = _resource->findBlock(1, _blockTable, headerID, "OC", NULL);
if (_blockTable[headerID].numFiles == _blockTable[id].numFiles)
break;
}
paletteID = _resource->findBlock(0, _blockTable, id, "PA", NULL);
if (paletteID != -1) {
version = 4;
_input.seek(_blockTable[paletteID].offset + 8, SEEK_SET);
}
} else {
headerID = _resource->findBlock(0, _blockTable, id, "IMHD", NULL);
}
_width = _blockTable[headerID].width;
_height = _blockTable[headerID].height;
if (_blockTable[id].image == NULL)
_image = _blockTable[id].image = new ImageWindow("Object", wxSize(_width, _height), id, IMAGE_SCALE);
else
_image = _blockTable[id].image;
if (version > 4) {
paletteID = _resource->findBlock(0, _blockTable, id, "CLUT", "APAL", "NPAL", NULL);
_input.seek(_blockTable[paletteID].offset + 8, SEEK_SET);
}
if (version > 3) {
for (int j = 0; j < 256; j++) {
_rgbTable[j].red = _input.readByte(); // red
_rgbTable[j].green = _input.readByte(); // green
_rgbTable[j].blue = _input.readByte(); // blue
}
} else {
setupEGAPalette();
}
if (version > 4) {
dataID = _resource->findBlock(1, _blockTable, id, "SMAP", NULL);
_input.seek(_blockTable[dataID].offset + 8, SEEK_SET);
} else {
dataID = id;
_input.seek(_blockTable[dataID].offset + 10, SEEK_SET);
}
_offsets = new uint32[_width/8];
if (version > 4) {
for (int x = 0; x < _width/8; x++)
_offsets[x] = _input.readUint32LE();
} else if (version == 4) {
for (int x = 0; x < _width/8; x++) {
_input.seek(2, SEEK_CUR);
_offsets[x] = _input.readUint16LE() + 8;
}
} else {
for (int x = 0; x < _width/8; x++)
_offsets[x] = _input.readUint16LE() + 8;
}
_input.seek(_blockTable[dataID].offset, SEEK_SET);
dstorg = dst = (byte *)malloc(_width * _height);
src = (byte *)malloc(_blockTable[dataID].blockSize);
_input.read(src, _blockTable[dataID].blockSize);
for (int x = 0; x < _width/8; x++) {
if (version > 3)
GetStrip(dst + (8 * x), src + _offsets[x], _height);
else
decodeStripEGA(dst + (8 * x), src + _offsets[x], _height);
}
free(src);
if (_image->_scaleFactor > 1) {
dstorg = dstFinal = (byte *)malloc((_width * _image->_scaleFactor) * (_height * _image->_scaleFactor));
scale(_image->_scaleFactor, dst, _width, dstFinal, _width * _image->_scaleFactor, _width, _height);
free(dst);
} else {
dstFinal = dst;
}
for (int y=0; y<_height * _image->_scaleFactor; y++) {
for (int x=0; x<_width * _image->_scaleFactor; x++) {
int color = *dstFinal++;
_image->PutPixel(x, y, _rgbTable[color].red, _rgbTable[color].green, _rgbTable[color].blue);
}
}
free(dstorg);
_image->DrawImage();
}
void Image::GetStrip(byte *dst, const byte *src, int numLinesToProcess)
{
byte code = *src++;
_decomp_shr = (code % 10);
_decomp_mask = 0xFF >> (8 - _decomp_shr);
_vertStripNextInc = _height * _width - 1;
switch (code)
{
case 1:
unkDecode7(dst, src, numLinesToProcess);
break;
case 2:
unkDecode8(dst, src, numLinesToProcess);
break;
case 3:
unkDecode9(dst, src, numLinesToProcess);
break;
case 4:
unkDecode10(dst, src, numLinesToProcess);
break;
case 7:
unkDecode11(dst, src, numLinesToProcess);
break;
case 10:
decodeStripEGA(dst, src, numLinesToProcess);
break;
case 14:
case 15:
case 16:
case 17:
case 18:
case 34:
case 35:
case 36:
case 37:
case 38:
unkDecodeC(dst, src, numLinesToProcess);
break;
case 24:
case 25:
case 26:
case 27:
case 28:
case 44:
case 45:
case 46:
case 47:
case 48:
unkDecodeB(dst, src, numLinesToProcess);
break;
case 64:
case 65:
case 66:
case 67:
case 68:
case 84:
case 85:
case 86:
case 87:
case 88:
case 104:
case 105:
case 106:
case 107:
case 108:
case 124:
case 125:
case 126:
case 127:
case 128:
unkDecodeA(dst, src, numLinesToProcess);
break;
default:
printf("Unknown codec: %d!\n", code);
}
}
void Image::decodeCodec44(byte *dst, const byte *src, uint32 length) {
byte val;
uint16 size_line, num;
do {
size_line = READ_LE_UINT16(src);
src += 2;
length -= 2;
while (size_line != 0) {
num = *src++;
val = *src++;
memset(dst, val, num);
dst += num;
length -= 2;
size_line -= 2;
if (size_line != 0) {
num = READ_LE_UINT16(src) + 1;
src += 2;
memcpy(dst, src, num);
dst += num;
src += num;
length -= num + 2;
size_line -= num + 2;
}
}
dst--;
} while (length > 1);
}
void Image::decodeCodec1(byte *dst, byte *src, int height) {
byte val, code;
int32 length;
int h = height, size_line;
for (h = 0; h < height; h++) {
size_line = READ_LE_UINT16(src);
src += 2;
while (size_line > 0) {
code = *src++;
size_line--;
length = (code >> 1) + 1;
if (code & 1) {
val = *src++;
size_line--;
if (val)
memset(dst, val, length);
dst += length;
} else {
size_line -= length;
while (length--) {
val = *src++;
if (val)
*dst = val;
dst++;
}
}
}
}
}
void Image::decodeStripEGA(byte *dst, const byte *src, int height) {
byte color = 0;
int run = 0, x = 0, y = 0, z;
while (x < 8) {
color = *src++;
if (color & 0x80) {
run = color & 0x3f;
if (color & 0x40) {
color = *src++;
if (run == 0) {
run = *src++;
}
for (z = 0; z < run; z++) {
*(dst + y * _width + x) = (z&1) ? color & 0xf : color >> 4;
y++;
if (y >= height) {
y = 0;
x++;
}
}
} else {
if (run == 0) {
run = *src++;
}
for (z = 0; z < run; z++) {
*(dst + y * _width + x) = *(dst + y * _width + x - 1);
y++;
if (y >= height) {
y = 0;
x++;
}
}
}
} else {
run = color >> 4;
if (run == 0) {
run = *src++;
}
for (z = 0; z < run; z++) {
*(dst + y * _width + x) = color & 0xf;
y++;
if (y >= height) {
y = 0;
x++;
}
}
}
}
}
#define READ_BIT (cl--, bit = bits&1, bits>>=1,bit)
#define FILL_BITS do { \
if (cl <= 8) { \
bits |= (*src++ << cl); \
cl += 8; \
} \
} while (0)
void Image::unkDecodeA(byte *dst, const byte *src, int height) {
byte color = *src++;
uint bits = *src++;
byte cl = 8;
byte bit;
byte incm, reps;
do {
int x = 8;
do {
FILL_BITS;
*dst++ = color;
againPos:
if (!READ_BIT) {
} else if (!READ_BIT) {
FILL_BITS;
color = bits & _decomp_mask;
bits >>= _decomp_shr;
cl -= _decomp_shr;
} else {
incm = (bits & 7) - 4;
cl -= 3;
bits >>= 3;
if (incm) {
color = (byte)((color+incm)&0xFF);
} else {
FILL_BITS;
reps = bits & 0xFF;
do {
if (!--x) {
x = 8;
dst += _width - 8;
if (!--height)
return;
}
*dst++ = color;
} while (--reps);
bits >>= 8;
bits |= (*src++) << (cl - 8);
goto againPos;
}
}
} while (--x);
dst += _width - 8;
} while (--height);
}
void Image::unkDecodeB(byte *dst, const byte *src, int height) {
byte color = *src++;
uint bits = *src++;
byte cl = 8;
byte bit;
int8 inc = -1;
do {
int x = 8;
do {
FILL_BITS;
*dst++ = color;
if (!READ_BIT) {
} else if (!READ_BIT) {
FILL_BITS;
color = bits & _decomp_mask;
bits >>= _decomp_shr;
cl -= _decomp_shr;
inc = -1;
} else if (!READ_BIT) {
color += inc;
} else {
inc = -inc;
color += inc;
}
} while (--x);
dst += _width - 8;
} while (--height);
}
void Image::unkDecodeC(byte *dst, const byte *src, int height) {
byte color = *src++;
uint bits = *src++;
byte cl = 8;
byte bit;
int8 inc = -1;
int x = 8;
do {
int h = height;
do {
FILL_BITS;
*dst = color;
dst += _width;
if (!READ_BIT) {
} else if (!READ_BIT) {
FILL_BITS;
color = bits & _decomp_mask;
bits >>= _decomp_shr;
cl -= _decomp_shr;
inc = -1;
} else if (!READ_BIT) {
color += inc;
} else {
inc = -inc;
color += inc;
}
} while (--h);
dst -= _vertStripNextInc;
} while (--x);
}
#undef READ_BIT
#undef FILL_BITS
/* Ender - Zak256/Indy256 decoders */
#define READ_256BIT \
do { \
if ((mask <<= 1) == 256) { \
buffer = *src++; \
mask = 1; \
} \
bits = ((buffer & mask) != 0); \
} while (0)
#define NEXT_ROW \
do { \
dst += _width; \
if (--h == 0) { \
if (!--x) \
return; \
dst -= _vertStripNextInc; \
h = height; \
} \
} while (0)
void Image::unkDecode7(byte *dst, const byte *src, int height) {
uint h = height;
//if (_vm->_features & GF_OLD256) {
int x = 8;
for (;;) {
*dst = *src++;
NEXT_ROW;
}
return;
//}
do {
#if defined(SCUMM_NEED_ALIGNMENT)
memcpy(dst, src, 8);
#else
((uint32 *)dst)[0] = ((const uint32 *)src)[0];
((uint32 *)dst)[1] = ((const uint32 *)src)[1];
#endif
dst += _width;
src += 8;
} while (--height);
}
void Image::unkDecode8(byte *dst, const byte *src, int height) {
uint h = height;
int x = 8;
for (;;) {
uint run = (*src++) + 1;
byte color = *src++;
do {
*dst = color;
NEXT_ROW;
} while (--run);
}
}
void Image::unkDecode9(byte *dst, const byte *src, int height) {
unsigned char c, bits, color, run;
int i, j;
uint buffer = 0, mask = 128;
int h = height;
i = j = run = 0;
int x = 8;
for (;;) {
c = 0;
for (i = 0; i < 4; i++) {
READ_256BIT;
c += (bits << i);
}
switch (c >> 2) {
case 0:
color = 0;
for (i = 0; i < 4; i++) {
READ_256BIT;
color += bits << i;
}
for (i = 0; i < ((c & 3) + 2); i++) {
*dst = (run * 16 + color);
NEXT_ROW;
}
break;
case 1:
for (i = 0; i < ((c & 3) + 1); i++) {
color = 0;
for (j = 0; j < 4; j++) {
READ_256BIT;
color += bits << j;
}
*dst = (run * 16 + color);
NEXT_ROW;
}
break;
case 2:
run = 0;
for (i = 0; i < 4; i++) {
READ_256BIT;
run += bits << i;
}
break;
}
}
}
void Image::unkDecode10(byte *dst, const byte *src, int height) {
int i;
unsigned char local_palette[256], numcolors = *src++;
uint h = height;
for (i = 0; i < numcolors; i++)
local_palette[i] = *src++;
int x = 8;
for (;;) {
byte color = *src++;
if (color < numcolors) {
*dst = local_palette[color];
NEXT_ROW;
} else {
uint run = color - numcolors + 1;
color = *src++;
do {
*dst = color;
NEXT_ROW;
} while (--run);
}
}
}
void Image::unkDecode11(byte *dst, const byte *src, int height) {
int bits, i;
uint buffer = 0, mask = 128;
unsigned char inc = 1, color = *src++;
int x = 8;
do {
int h = height;
do {
*dst = color;
dst += _width;
for (i = 0; i < 3; i++) {
READ_256BIT;
if (!bits)
break;
}
switch (i) {
case 1:
inc = -inc;
color -= inc;
break;
case 2:
color -= inc;
break;
case 3:
color = 0;
inc = 1;
for (i = 0; i < 8; i++) {
READ_256BIT;
color += bits << i;
}
break;
}
} while (--h);
dst -= _vertStripNextInc;
} while (--x);
}
Reference in New Issue View Git Blame Copy Permalink