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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.
*
*/
#include "common/substream.h"
#include "image/codecs/bmp_raw.h"
#include "director/director.h"
#include "director/images.h"
namespace Director {
DIBDecoder::DIBDecoder() {
_surface = 0;
_palette = 0;
_paletteColorCount = 0;
_codec = 0;
}
DIBDecoder::~DIBDecoder() {
destroy();
}
void DIBDecoder::destroy() {
delete _surface;
_surface = 0;
delete[] _palette;
_palette = 0;
_paletteColorCount = 0;
delete _codec;
_codec = 0;
}
void DIBDecoder::loadPalette(Common::SeekableReadStream &stream) {
uint16 steps = stream.size() / 6;
uint16 index = (steps * 3) - 1;
_paletteColorCount = steps;
_palette = new byte[index + 1];
for (uint8 i = 0; i < steps; i++) {
_palette[index - 2] = stream.readByte();
stream.readByte();
_palette[index - 1] = stream.readByte();
stream.readByte();
_palette[index] = stream.readByte();
stream.readByte();
index -= 3;
}
}
bool DIBDecoder::loadStream(Common::SeekableReadStream &stream) {
uint32 headerSize = stream.readUint32LE();
if (headerSize != 40)
return false;
uint32 width = stream.readUint32LE();
uint32 height = stream.readUint32LE();
stream.readUint16LE(); // planes
uint16 bitsPerPixel = stream.readUint16LE();
uint32 compression = stream.readUint32BE();
/* uint32 imageSize = */ stream.readUint32LE();
/* uint32 pixelsPerMeterX = */ stream.readUint32LE();
/* uint32 pixelsPerMeterY = */ stream.readUint32LE();
_paletteColorCount = stream.readUint32LE();
/* uint32 colorsImportant = */ stream.readUint32LE();
_paletteColorCount = (_paletteColorCount == 0) ? 255: _paletteColorCount;
Common::SeekableSubReadStream subStream(&stream, 40, stream.size());
_codec = Image::createBitmapCodec(compression, width, height, bitsPerPixel);
if (!_codec)
return false;
_surface = _codec->decodeFrame(subStream);
return true;
}
/****************************
* BITD
****************************/
BITDDecoder::BITDDecoder(int w, int h, uint16 bitsPerPixel, uint16 pitch) {
_surface = new Graphics::Surface();
Graphics::PixelFormat pf = Graphics::PixelFormat::createFormatCLUT8();
switch (bitsPerPixel) {
case 2:
break;
case 4:
break;
case 8:
break;
case 16:
break;
case 32:
//pf = Graphics::PixelFormat::PixelFormat(bitsPerPixel / 8, 8, 8, 8, 8, 24, 16, 8, 0);
break;
default:
break;
}
// HACK: Create a padded surface by adjusting w after create()
_surface->create(pitch, h, pf);
_surface->w = w;
_palette = new byte[256 * 3];
_palette[0] = _palette[1] = _palette[2] = 0;
_palette[255 * 3 + 0] = _palette[255 * 3 + 1] = _palette[255 * 3 + 2] = 0xff;
_paletteColorCount = 2;
_bitsPerPixel = bitsPerPixel;
}
BITDDecoder::~BITDDecoder() {
destroy();
}
void BITDDecoder::destroy() {
_surface = 0;
delete[] _palette;
_palette = 0;
_paletteColorCount = 0;
}
void BITDDecoder::loadPalette(Common::SeekableReadStream &stream) {
// no op
}
bool BITDDecoder::loadStream(Common::SeekableReadStream &stream) {
int x = 0, y = 0;
// If the stream has exactly the required number of bits for this image,
// we assume it is uncompressed.
if (stream.size() * 8 == _surface->pitch * _surface->h) {
debugC(6, kDebugImages, "Skipping compression");
for (y = 0; y < _surface->h; y++) {
for (x = 0; x < _surface->pitch; ) {
byte color = stream.readByte();
for (int c = 0; c < 8; c++)
*((byte *)_surface->getBasePtr(x++, y)) = (color & (1 << (7 - c))) ? 0 : 0xff;
}
}
return true;
}
Common::Array<int> pixels;
while (!stream.eos()) {
int data = stream.readByte();
int len = data + 1;
if ((data & 0x80) != 0) {
len = ((data ^ 0xFF) & 0xff) + 2;
data = stream.readByte();
for (int p = 0; p < len; p++) {
pixels.push_back(data);
//*((byte *)_surface->getBasePtr(x, y)) = data;
}
//data = stream.readByte();
} else {
for (int p = 0; p < len; p++) {
data = stream.readByte();
pixels.push_back(data);
}
}
if (_bitsPerPixel == 32 && pixels.size() % (_surface->w * 3) == 0)
stream.readUint16BE();
}
int offset = 0;
if (_surface->w < (pixels.size() / _surface->h))
offset = (pixels.size() / _surface->h) - _surface->w;
if (pixels.size() > 0) {
for (y = 0; y < _surface->h; y++) {
for (x = 0; x < _surface->w;) {
switch (_bitsPerPixel) {
case 1: {
for (int c = 0; c < 8; c++, x++) {
*((byte *)_surface->getBasePtr(x, y)) = (pixels[(((y * _surface->pitch) + x) / 8)] & (1 << (7 - c))) ? 0 : 0xff;
}
break;
}
case 8:
// this calculation is wrong.. need a demo with colours.
*((byte *)_surface->getBasePtr(x, y)) = 0xff - pixels[(y * _surface->w) + x + (y * offset)];
x++;
break;
case 16:
*((uint16*)_surface->getBasePtr(x, y)) = _surface->format.RGBToColor(
(pixels[((y * _surface->w) * 2) + x] & 0x7c) << 1,
(pixels[((y * _surface->w) * 2) + x] & 0x03) << 6 |
(pixels[((y * _surface->w) * 2) + (_surface->w) + x] & 0xe0) >> 2,
(pixels[((y * _surface->w) * 2) + (_surface->w) + x] & 0x1f) << 3);
x++;
break;
case 32:
*((uint32*)_surface->getBasePtr(x, y)) = _surface->format.RGBToColor(
pixels[((y * _surface->w) * 3) + x],
pixels[(((y * _surface->w) * 3) + (_surface->w)) + x],
pixels[(((y * _surface->w) * 3) + (2 * _surface->w)) + x]);
x++;
break;
default:
x++;
break;
}
}
}
}
return true;
}
} // End of namespace Director
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