* Make AndroidImageInfo extensible, add javadoc explanation
git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9187 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
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@ -1,93 +1,101 @@
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package com.jme3.asset;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import com.jme3.texture.Image;
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import com.jme3.texture.Image.Format;
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import java.io.IOException;
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import java.io.InputStream;
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public class AndroidImageInfo {
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private AssetInfo assetInfo;
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private Bitmap bitmap;
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private Format format;
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public AndroidImageInfo(AssetInfo assetInfo) {
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this.assetInfo = assetInfo;
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}
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public Bitmap getBitmap(){
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if (bitmap == null || bitmap.isRecycled()){
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try {
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loadBitmap();
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} catch (IOException ex) {
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// If called first inside AssetManager, the error will propagate
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// correctly. Assuming that if the first calls succeeds
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// then subsequent calls will as well.
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throw new AssetLoadException("Failed to load image " + assetInfo.getKey(), ex);
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}
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}
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return bitmap;
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}
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public Format getFormat(){
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return format;
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}
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/**
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* Loads the bitmap directly from the asset info, possibly updating
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* or creating the image object.
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*/
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private void loadBitmap() throws IOException{
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InputStream in = null;
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try {
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in = assetInfo.openStream();
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bitmap = BitmapFactory.decodeStream(in);
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if (bitmap == null) {
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throw new IOException("Failed to load image: " + assetInfo.getKey().getName());
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}
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} finally {
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if (in != null) {
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in.close();
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}
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}
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switch (bitmap.getConfig()) {
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case ALPHA_8:
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format = Image.Format.Alpha8;
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break;
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case ARGB_4444:
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format = Image.Format.ARGB4444;
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break;
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case ARGB_8888:
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format = Image.Format.RGBA8;
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break;
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case RGB_565:
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format = Image.Format.RGB565;
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break;
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default:
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// This should still work as long
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// as renderer doesn't check format
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// but just loads bitmap directly.
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format = null;
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}
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TextureKey texKey = (TextureKey) assetInfo.getKey();
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if (texKey.isFlipY()) {
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// Flip the image, then delete the old one.
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Matrix flipMat = new Matrix();
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flipMat.preScale(1.0f, -1.0f);
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Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), flipMat, false);
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bitmap.recycle();
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bitmap = newBitmap;
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if (bitmap == null) {
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throw new IOException("Failed to flip image: " + texKey);
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}
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}
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}
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}
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package com.jme3.asset;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import com.jme3.texture.Image;
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import com.jme3.texture.Image.Format;
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import java.io.IOException;
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import java.io.InputStream;
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/**
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* <code>AndroidImageInfo</code> is set in a jME3 image via the {@link Image#setEfficientData(java.lang.Object)}
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* method to retrieve a {@link Bitmap} when it is needed by the renderer.
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* User code may extend <code>AndroidImageInfo</code> and provide their own implementation of the
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* {@link AndroidImageInfo#loadBitmap()} method to acquire a bitmap by their own means.
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*
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* @author Kirill Vainer
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*/
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public class AndroidImageInfo {
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protected AssetInfo assetInfo;
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protected Bitmap bitmap;
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protected Format format;
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public AndroidImageInfo(AssetInfo assetInfo) {
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this.assetInfo = assetInfo;
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}
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public Bitmap getBitmap(){
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if (bitmap == null || bitmap.isRecycled()){
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try {
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loadBitmap();
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} catch (IOException ex) {
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// If called first inside AssetManager, the error will propagate
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// correctly. Assuming that if the first calls succeeds
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// then subsequent calls will as well.
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throw new AssetLoadException("Failed to load image " + assetInfo.getKey(), ex);
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}
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}
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return bitmap;
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}
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public Format getFormat(){
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return format;
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}
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/**
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* Loads the bitmap directly from the asset info, possibly updating
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* or creating the image object.
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*/
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protected void loadBitmap() throws IOException{
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InputStream in = null;
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try {
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in = assetInfo.openStream();
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bitmap = BitmapFactory.decodeStream(in);
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if (bitmap == null) {
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throw new IOException("Failed to load image: " + assetInfo.getKey().getName());
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}
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} finally {
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if (in != null) {
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in.close();
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}
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}
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switch (bitmap.getConfig()) {
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case ALPHA_8:
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format = Image.Format.Alpha8;
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break;
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case ARGB_4444:
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format = Image.Format.ARGB4444;
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break;
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case ARGB_8888:
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format = Image.Format.RGBA8;
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break;
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case RGB_565:
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format = Image.Format.RGB565;
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break;
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default:
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// This should still work as long
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// as renderer doesn't check format
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// but just loads bitmap directly.
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format = null;
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}
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TextureKey texKey = (TextureKey) assetInfo.getKey();
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if (texKey.isFlipY()) {
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// Flip the image, then delete the old one.
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Matrix flipMat = new Matrix();
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flipMat.preScale(1.0f, -1.0f);
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Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), flipMat, false);
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bitmap.recycle();
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bitmap = newBitmap;
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if (bitmap == null) {
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throw new IOException("Failed to flip image: " + texKey);
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}
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}
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}
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}
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