/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.assets.loaders;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.assets.AssetDescriptor;
import com.badlogic.gdx.assets.AssetLoaderParameters;
import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.PixmapIO;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.Texture.TextureWrap;
import com.badlogic.gdx.graphics.TextureData;
import com.badlogic.gdx.graphics.glutils.ETC1TextureData;
import com.badlogic.gdx.graphics.glutils.FileTextureData;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.ObjectMap;
/** {@link AssetLoader} for {@link Texture} instances. The pixel data is loaded asynchronously. The texture is then created on the
* rendering thread, synchronously. Passing a {@link TextureParameter} to
* {@link AssetManager#load(String, Class, AssetLoaderParameters)} allows one to specify parameters as can be passed to the
* various Texture constructors, e.g. filtering, whether to generate mipmaps and so on.
* @author mzechner */
public class TextureLoader extends AsynchronousAssetLoader<Texture, TextureLoader.TextureParameter> {
static public class TextureLoaderInfo {
String filename;
TextureData data;
Texture texture;
};
TextureLoaderInfo info = new TextureLoaderInfo();
public TextureLoader (FileHandleResolver resolver) {
super(resolver);
}
@Override
public void loadAsync (AssetManager manager, String fileName, FileHandle file, TextureParameter parameter) {
info.filename = fileName;
if (parameter == null || parameter.textureData == null) {
Pixmap pixmap = null;
Format format = null;
boolean genMipMaps = false;
info.texture = null;
if (parameter != null) {
format = parameter.format;
genMipMaps = parameter.genMipMaps;
info.texture = parameter.texture;
}
if (!fileName.contains(".etc1")) {
if (fileName.contains(".cim"))
pixmap = PixmapIO.readCIM(file);
else
pixmap = new Pixmap(file);
info.data = new FileTextureData(file, pixmap, format, genMipMaps);
} else {
info.data = new ETC1TextureData(file, genMipMaps);
}
} else {
info.data = parameter.textureData;
if (!info.data.isPrepared()) info.data.prepare();
info.texture = parameter.texture;
}
}
@Override
public Texture loadSync (AssetManager manager, String fileName, FileHandle file, TextureParameter parameter) {
if (info == null)
return null;
Texture texture = info.texture;
if (texture != null) {
texture.load(info.data);
} else {
texture = new Texture(info.data);
}
if (parameter != null) {
texture.setFilter(parameter.minFilter, parameter.magFilter);
texture.setWrap(parameter.wrapU, parameter.wrapV);
}
return texture;
}
@Override
public Array<AssetDescriptor> getDependencies (String fileName, FileHandle file, TextureParameter parameter) {
return null;
}
static public class TextureParameter extends AssetLoaderParameters<Texture> {
/** the format of the final Texture. Uses the source images format if null **/
public Format format = null;
/** whether to generate mipmaps **/
public boolean genMipMaps = false;
/** The texture to put the {@link TextureData} in, optional. **/
public Texture texture = null;
/** TextureData for textures created on the fly, optional. When set, all format and genMipMaps are ignored */
public TextureData textureData = null;
public TextureFilter minFilter = TextureFilter.Nearest;
public TextureFilter magFilter = TextureFilter.Nearest;
public TextureWrap wrapU = TextureWrap.ClampToEdge;
public TextureWrap wrapV = TextureWrap.ClampToEdge;
}
}