mirror of
https://github.com/libretro/scummvm.git
synced 2025-02-03 17:33:05 +00:00
156 lines
3.9 KiB
C++
156 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "engines/stark/formats/tm.h"
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#include "engines/stark/gfx/driver.h"
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#include "engines/stark/gfx/texture.h"
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#include "engines/stark/formats/biff.h"
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#include "engines/stark/services/archiveloader.h"
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#include "engines/stark/services/services.h"
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namespace Stark {
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namespace Formats {
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class TextureGroup : public BiffObject {
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public:
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static const uint32 TYPE = kTextureSetGroup;
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TextureGroup() :
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BiffObject(),
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_palette(nullptr) {
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_type = TYPE;
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}
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~TextureGroup() override {
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delete[] _palette;
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}
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const byte *getPalette() {
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return _palette;
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}
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// BiffObject API
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void readData(ArchiveReadStream *stream, uint32 dataLength) override {
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int entries = stream->readUint32LE();
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_palette = new byte[entries * 3];
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byte *ptr = _palette;
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for (int i = 0; i < entries; ++i) {
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*ptr++ = (byte) stream->readUint16LE();
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*ptr++ = (byte) stream->readUint16LE();
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*ptr++ = (byte) stream->readUint16LE();
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}
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}
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private:
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byte *_palette;
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};
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Texture::Texture() :
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BiffObject(),
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_texture(nullptr),
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_u(0) {
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_type = TYPE;
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}
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Texture::~Texture() {
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_surface.free();
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delete _texture;
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}
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void Texture::readData(ArchiveReadStream *stream, uint32 dataLength) {
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TextureGroup *textureGroup = static_cast<TextureGroup *>(_parent);
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_name = stream->readString16();
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_u = stream->readByte();
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uint32 w = stream->readUint32LE();
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uint32 h = stream->readUint32LE();
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uint32 levels = stream->readUint32LE();
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_texture = StarkGfx->createTexture();
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_texture->setLevelCount(levels);
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for (uint32 i = 0; i < levels; ++i) {
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// Read the pixel data to a surface
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Graphics::Surface level;
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Graphics::Surface *surface = i == 0 ? &_surface : &level;
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surface->create(w, h, Graphics::PixelFormat::createFormatCLUT8());
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stream->read(surface->getPixels(), surface->w * surface->h);
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// Add the mipmap level to the texture
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_texture->addLevel(i, surface, textureGroup->getPalette());
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level.free();
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w /= 2;
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h /= 2;
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}
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}
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Gfx::Texture *Texture::acquireTexturePointer() {
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Gfx::Texture *texture = _texture;
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_texture = nullptr;
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return texture;
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}
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Graphics::Surface *Texture::getSurface() const {
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TextureGroup *textureGroup = static_cast<TextureGroup *>(_parent);
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return _surface.convertTo(Gfx::Driver::getRGBAPixelFormat(), textureGroup->getPalette());
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}
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Gfx::TextureSet *TextureSetReader::read(ArchiveReadStream *stream) {
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BiffArchive archive = BiffArchive(stream, &biffObjectBuilder);
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Common::Array<Texture *> textures = archive.listObjectsRecursive<Texture>();
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Gfx::TextureSet *textureSet = new Gfx::TextureSet();
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for (uint i = 0; i < textures.size(); i++) {
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textureSet->addTexture(textures[i]->getName(), textures[i]->acquireTexturePointer());
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}
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return textureSet;
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}
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BiffArchive *TextureSetReader::readArchive(ArchiveReadStream *stream) {
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return new BiffArchive(stream, &biffObjectBuilder);
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}
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BiffObject *TextureSetReader::biffObjectBuilder(uint32 type) {
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switch (type) {
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case kTextureSetGroup:
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return new TextureGroup();
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case kTextureSetTexture:
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return new Texture();
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default:
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return nullptr;
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}
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}
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} // End of namespace Formats
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} // End of namespace Stark
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