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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "engines/stark/formats/tm.h"
#include "engines/stark/gfx/driver.h"
#include "engines/stark/gfx/texture.h"
#include "engines/stark/formats/biff.h"
#include "engines/stark/services/archiveloader.h"
#include "engines/stark/services/services.h"
namespace Stark {
namespace Formats {
class TextureGroup : public BiffObject {
public:
static const uint32 TYPE = kTextureSetGroup;
TextureGroup() :
BiffObject(),
_palette(nullptr) {
_type = TYPE;
}
~TextureGroup() override {
delete[] _palette;
}
const byte *getPalette() {
return _palette;
}
// BiffObject API
void readData(ArchiveReadStream *stream, uint32 dataLength) override {
int entries = stream->readUint32LE();
_palette = new byte[entries * 3];
byte *ptr = _palette;
for (int i = 0; i < entries; ++i) {
*ptr++ = (byte) stream->readUint16LE();
*ptr++ = (byte) stream->readUint16LE();
*ptr++ = (byte) stream->readUint16LE();
}
}
private:
byte *_palette;
};
Texture::Texture() :
BiffObject(),
_texture(nullptr),
_u(0) {
_type = TYPE;
}
Texture::~Texture() {
_surface.free();
delete _texture;
}
void Texture::readData(ArchiveReadStream *stream, uint32 dataLength) {
TextureGroup *textureGroup = static_cast<TextureGroup *>(_parent);
_name = stream->readString16();
_u = stream->readByte();
uint32 w = stream->readUint32LE();
uint32 h = stream->readUint32LE();
uint32 levels = stream->readUint32LE();
_texture = StarkGfx->createTexture();
_texture->setLevelCount(levels);
for (uint32 i = 0; i < levels; ++i) {
// Read the pixel data to a surface
Graphics::Surface level;
Graphics::Surface *surface = i == 0 ? &_surface : &level;
surface->create(w, h, Graphics::PixelFormat::createFormatCLUT8());
stream->read(surface->getPixels(), surface->w * surface->h);
// Add the mipmap level to the texture
_texture->addLevel(i, surface, textureGroup->getPalette());
level.free();
w /= 2;
h /= 2;
}
}
Gfx::Texture *Texture::acquireTexturePointer() {
Gfx::Texture *texture = _texture;
_texture = nullptr;
return texture;
}
Graphics::Surface *Texture::getSurface() const {
TextureGroup *textureGroup = static_cast<TextureGroup *>(_parent);
return _surface.convertTo(Gfx::Driver::getRGBAPixelFormat(), textureGroup->getPalette());
}
Gfx::TextureSet *TextureSetReader::read(ArchiveReadStream *stream) {
BiffArchive archive = BiffArchive(stream, &biffObjectBuilder);
Common::Array<Texture *> textures = archive.listObjectsRecursive<Texture>();
Gfx::TextureSet *textureSet = new Gfx::TextureSet();
for (uint i = 0; i < textures.size(); i++) {
textureSet->addTexture(textures[i]->getName(), textures[i]->acquireTexturePointer());
}
return textureSet;
}
BiffArchive *TextureSetReader::readArchive(ArchiveReadStream *stream) {
return new BiffArchive(stream, &biffObjectBuilder);
}
BiffObject *TextureSetReader::biffObjectBuilder(uint32 type) {
switch (type) {
case kTextureSetGroup:
return new TextureGroup();
case kTextureSetTexture:
return new Texture();
default:
return nullptr;
}
}
} // End of namespace Formats
} // End of namespace Stark
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