1a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard/* 2a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * Copyright (C) 2012 The Android Open Source Project 3a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * 4a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * Licensed under the Apache License, Version 2.0 (the "License"); 5a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * you may not use this file except in compliance with the License. 6a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * You may obtain a copy of the License at 7a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * 8a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * http://www.apache.org/licenses/LICENSE-2.0 9a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * 10a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * Unless required by applicable law or agreed to in writing, software 11a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * distributed under the License is distributed on an "AS IS" BASIS, 12a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * See the License for the specific language governing permissions and 14a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard * limitations under the License. 15a9f280f938b5fd5891c5cfe0999f8f1d4945d7a1nicolasroard */ 160d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 170d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroardpackage com.android.gallery3d.filtershow.cache; 180d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 1981eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroardimport android.graphics.Bitmap; 200d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 210d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroardimport com.android.gallery3d.filtershow.presets.ImagePreset; 220d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 2381eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroardimport java.nio.ByteBuffer; 240d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 250d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroardpublic class BitmapCache { 260d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 270d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard private static final String LOGTAG = "BitmapCache"; 280d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard static int mNbItems = 20; 2981eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard private final Bitmap[] mBitmaps = new Bitmap[mNbItems]; 3081eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard private final Object[] mKeys = new Object[mNbItems]; 3181eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard private final long[] mIndices = new long[mNbItems]; 3281eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard private final boolean[] mBusyStatus = new boolean[mNbItems]; 330d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 340d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard private Bitmap mOriginalBitmap = null; 350d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard private ByteBuffer mBuffer = null; 3681eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard private final Bitmap.Config mConfig = Bitmap.Config.ARGB_8888; 370d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard private long mIndex = 0; 380d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 390d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public void setOriginalBitmap(Bitmap original) { 400d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (original == null) { 410d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return; 420d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 430d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mOriginalBitmap = original.copy(mConfig, true); 440d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int size = 4 * original.getWidth() * original.getHeight(); 450d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBuffer = ByteBuffer.allocate(size); 460d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mOriginalBitmap.copyPixelsToBuffer(mBuffer); 470d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBuffer.rewind(); 480d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mOriginalBitmap.copyPixelsFromBuffer(mBuffer); 490d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard for (int i = 0; i < mNbItems; i++) { 500d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBitmaps[i] = mOriginalBitmap.copy(mConfig, true); 510d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 520d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 530d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 540d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard private int getOldestPosition() { 550d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard long minIndex = mIndices[0]; 560d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int current = 0; 570d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard for (int i = 1; i < mNbItems; i++) { 580d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (!mBusyStatus[i] && minIndex > mIndices[i]) { 590d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard minIndex = mIndices[i]; 600d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard current = i; 610d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 620d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 630d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return current; 640d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 650d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 660d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public Bitmap put(ImagePreset preset) { 670d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int pos = getOldestPosition(); 680d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return put(preset, pos); 690d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 700d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 710d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public Bitmap put(ImagePreset preset, int pos) { 720d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBitmaps[pos] = mOriginalBitmap.copy(mConfig, true); 730d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard Bitmap bitmap = mBitmaps[pos]; 7481eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard bitmap = preset.apply(bitmap); 750d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mKeys[pos] = preset; 760d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mIndices[pos] = mIndex++; 770d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return bitmap; 780d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 790d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 800d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public int reservePosition(ImagePreset preset) { 810d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard for (int i = 1; i < mNbItems; i++) { 820d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (mKeys[i] == preset && mBusyStatus[i]) { 830d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return -1; 840d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 850d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 860d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int pos = getOldestPosition(); 870d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBusyStatus[pos] = true; 880d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mKeys[pos] = preset; 890d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return pos; 900d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 910d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 920d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public void processPosition(int pos) { 930d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard ImagePreset preset = (ImagePreset) mKeys[pos]; 940d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBitmaps[pos] = mOriginalBitmap.copy(mConfig, true); 950d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard Bitmap bitmap = mBitmaps[pos]; 9681eb9976f967d9b3faa1749a8ab29d1743cf347dnicolasroard bitmap = preset.apply(bitmap); 970d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mIndices[pos] = mIndex++; 980d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 990d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 1000d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public void unlockPosition(int pos) { 1010d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBusyStatus[pos] = false; 1020d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1030d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 1040d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public Bitmap get(ImagePreset preset) { 1050d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int foundPosition = -1; 1060d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard int currentIndice = 0; 1070d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard for (int i = 0; i < mNbItems; i++) { 1080d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (mKeys[i] == preset && mBitmaps[i] != null) { 1090d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (mIndices[i] > currentIndice) { 1100d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard foundPosition = i; 1110d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1120d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1130d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1140d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (foundPosition != -1) { 1150d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mIndices[foundPosition] = mIndex++; 1160d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return mBitmaps[foundPosition]; 1170d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1180d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard return null; 1190d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1200d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard 1210d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard public void reset(ImagePreset preset) { 1220d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard for (int i = 0; i < mNbItems; i++) { 1230d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard if (mKeys[i] == preset && !mBusyStatus[i]) { 1240d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard mBitmaps[i] = null; 1250d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1260d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1270d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard } 1280d7cdf8e763fb65c32bfad65245b3753deb75737nicolasroard} 129