Java tutorial
//package com.java2s; /* * FFmpegMediaPlayer: A unified interface for playing audio files and streams. * * Copyright 2014 William Seemann * * 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. */ import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; public class Main { public static Bitmap getDefaultArtwork(Context context, int id, int w, int h) { BitmapFactory.Options sBitmapOptionsCache = new BitmapFactory.Options(); Bitmap b = null; int sampleSize = 1; sBitmapOptionsCache.inPreferredConfig = Bitmap.Config.ARGB_8888; // Compute the closest power-of-two scale factor // and pass that to sBitmapOptionsCache.inSampleSize, which will // result in faster decoding and better quality sBitmapOptionsCache.inJustDecodeBounds = true; BitmapFactory.decodeResource(context.getResources(), id, sBitmapOptionsCache); int nextWidth = sBitmapOptionsCache.outWidth >> 1; int nextHeight = sBitmapOptionsCache.outHeight >> 1; while (nextWidth > w && nextHeight > h) { sampleSize <<= 1; nextWidth >>= 1; nextHeight >>= 1; } sBitmapOptionsCache.inSampleSize = sampleSize; sBitmapOptionsCache.inJustDecodeBounds = false; b = BitmapFactory.decodeResource(context.getResources(), id, sBitmapOptionsCache); if (b != null) { // finally rescale to exactly the size we need if (sBitmapOptionsCache.outWidth != w || sBitmapOptionsCache.outHeight != h) { Bitmap tmp = Bitmap.createScaledBitmap(b, w, h, true); // Bitmap.createScaledBitmap() can return the same bitmap if (tmp != b) b.recycle(); b = tmp; } } return b; } }