FrameSequenceDrawable.java revision b19ecfd9cfa2c417034403adf7039edf9fe59327
1a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik/* 2a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * Copyright (C) 2013 The Android Open Source Project 3a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * 4a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * Licensed under the Apache License, Version 2.0 (the "License"); 5a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * you may not use this file except in compliance with the License. 6a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * You may obtain a copy of the License at 7a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * 8a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * http://www.apache.org/licenses/LICENSE-2.0 9a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * 10a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * Unless required by applicable law or agreed to in writing, software 11a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * distributed under the License is distributed on an "AS IS" BASIS, 12a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * See the License for the specific language governing permissions and 14a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * limitations under the License. 15a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik */ 16a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 17a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikpackage android.support.rastermill; 18a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 19a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.Bitmap; 20a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.Canvas; 21a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.ColorFilter; 22a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.Paint; 23a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.PixelFormat; 24a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.Rect; 25a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.drawable.Animatable; 26a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.graphics.drawable.Drawable; 27a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.os.Handler; 28a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.os.HandlerThread; 293105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craikimport android.os.Process; 30a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikimport android.os.SystemClock; 31a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 32a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craikpublic class FrameSequenceDrawable extends Drawable implements Animatable, Runnable { 33a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static final Object sLock = new Object(); 34a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static HandlerThread sDecodingThread; 35a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static Handler sDecodingThreadHandler; 36a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static void initializeDecodingThread() { 37a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (sLock) { 38a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (sDecodingThread != null) return; 39a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 403105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik sDecodingThread = new HandlerThread("FrameSequence decoding thread", 413105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik Process.THREAD_PRIORITY_BACKGROUND); 42a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik sDecodingThread.start(); 43a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik sDecodingThreadHandler = new Handler(sDecodingThread.getLooper()); 44a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 45a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 46a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 47e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public static interface OnFinishedListener { 48e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 49e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Called when a FrameSequenceDrawable has finished looping. 50e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * 51e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Note that this is will not be called if the drawable is explicitly 52e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * stopped, or marked invisible. 53e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 54e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public abstract void onFinished(FrameSequenceDrawable drawable); 55e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 56e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 573105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik public static interface BitmapProvider { 583105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik /** 593105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * Called by FrameSequenceDrawable to aquire an 8888 Bitmap with minimum dimensions. 603105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik */ 613105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik public abstract Bitmap acquireBitmap(int minWidth, int minHeight); 623105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 633105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik /** 643105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * Called by FrameSequenceDrawable to release a Bitmap it no longer needs. The Bitmap 653105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * will no longer be used at all by the drawable, so it is safe to reuse elsewhere. 664eb541aff092a057b27b917f09d33aba226dffedChris Craik * 674eb541aff092a057b27b917f09d33aba226dffedChris Craik * This method may be called by FrameSequenceDrawable on any thread. 683105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik */ 693105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik public abstract void releaseBitmap(Bitmap bitmap); 703105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 713105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 723105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik private static BitmapProvider sAllocatingBitmapProvider = new BitmapProvider() { 733105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik @Override 743105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik public Bitmap acquireBitmap(int minWidth, int minHeight) { 753105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik return Bitmap.createBitmap(minWidth, minHeight, Bitmap.Config.ARGB_8888); 763105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 773105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 783105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik @Override 79b19ecfd9cfa2c417034403adf7039edf9fe59327Chris Craik public void releaseBitmap(Bitmap bitmap) {} 803105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik }; 813105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 82e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 83e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Register a callback to be invoked when a FrameSequenceDrawable finishes looping. 84e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * 853105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * @see #setLoopBehavior(int) 86e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 87e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public void setOnFinishedListener(OnFinishedListener onFinishedListener) { 88e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik mOnFinishedListener = onFinishedListener; 89e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 90e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 91e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 92e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Loop only once. 93e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 94e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public static final int LOOP_ONCE = 1; 95e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 96e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 97e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Loop continuously. The OnFinishedListener will never be called. 98e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 99e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public static final int LOOP_INF = 2; 100e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 101e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 102e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Use loop count stored in source data, or LOOP_ONCE if not present. 103e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 104e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public static final int LOOP_DEFAULT = 3; 105e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 106e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik /** 107e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Define looping behavior of frame sequence. 108e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * 109e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik * Must be one of LOOP_ONCE, LOOP_INF, or LOOP_DEFAULT 110e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik */ 111e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public void setLoopBehavior(int loopBehavior) { 112e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik mLoopBehavior = loopBehavior; 113e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 114e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 115a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private final FrameSequence mFrameSequence; 116a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private final FrameSequence.State mFrameSequenceState; 117a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 118a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private final Paint mPaint; 119a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private final Rect mSrcRect; 120a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 121a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik //Protects the fields below 122a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private final Object mLock = new Object(); 123a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 1244eb541aff092a057b27b917f09d33aba226dffedChris Craik private final BitmapProvider mBitmapProvider; 1254eb541aff092a057b27b917f09d33aba226dffedChris Craik private boolean mDestroyed = false; 126a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private Bitmap mFrontBitmap; 127a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private Bitmap mBackBitmap; 128a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 129a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static final int STATE_SCHEDULED = 1; 130a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static final int STATE_DECODING = 2; 131a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static final int STATE_WAITING_TO_SWAP = 3; 132a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private static final int STATE_READY_TO_SWAP = 4; 133a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 134a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private int mState; 135e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik private int mCurrentLoop; 136e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik private int mLoopBehavior = LOOP_DEFAULT; 137a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 138a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private long mLastSwap; 1393105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik private long mNextSwap; 140a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private int mNextFrameToDecode; 141e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik private OnFinishedListener mOnFinishedListener; 142a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 143a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik /** 144a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik * Runs on decoding thread, only modifies mBackBitmap's pixels 145a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik */ 146a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private Runnable mDecodeRunnable = new Runnable() { 147a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 148a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void run() { 149a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik int nextFrame; 150a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik Bitmap bitmap; 151a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 1524eb541aff092a057b27b917f09d33aba226dffedChris Craik if (mDestroyed) return; 1533105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 154a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik nextFrame = mNextFrameToDecode; 155a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (nextFrame < 0) { 156a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik return; 157a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 158a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik bitmap = mBackBitmap; 159a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mState = STATE_DECODING; 160a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 161a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik int lastFrame = nextFrame - 2; 162a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik long invalidateTimeMs = mFrameSequenceState.getFrame(nextFrame, bitmap, lastFrame); 163a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 164a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 165a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (mNextFrameToDecode < 0 || mState != STATE_DECODING) return; 1663105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mNextSwap = invalidateTimeMs + mLastSwap; 167a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 168a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mState = STATE_WAITING_TO_SWAP; 169a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 1703105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik scheduleSelf(FrameSequenceDrawable.this, mNextSwap); 171a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 172a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik }; 173a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 174e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik private Runnable mCallbackRunnable = new Runnable() { 175e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik @Override 176e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik public void run() { 177e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik if (mOnFinishedListener != null) { 178e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik mOnFinishedListener.onFinished(FrameSequenceDrawable.this); 179e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 180e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 181e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik }; 182a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 1833105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik private static Bitmap acquireAndValidateBitmap(BitmapProvider bitmapProvider, 1843105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik int minWidth, int minHeight) { 1853105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik Bitmap bitmap = bitmapProvider.acquireBitmap(minWidth, minHeight); 1863105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 1873105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik if (bitmap.getWidth() < minWidth 1883105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik || bitmap.getHeight() < minHeight 1893105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik || bitmap.getConfig() != Bitmap.Config.ARGB_8888) { 1903105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik throw new IllegalArgumentException("Invalid bitmap provided"); 1913105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 1923105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 1933105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik return bitmap; 1943105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 1953105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 196a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public FrameSequenceDrawable(FrameSequence frameSequence) { 1973105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik this(frameSequence, sAllocatingBitmapProvider); 1983105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 1993105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2003105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik public FrameSequenceDrawable(FrameSequence frameSequence, BitmapProvider bitmapProvider) { 2014eb541aff092a057b27b917f09d33aba226dffedChris Craik if (frameSequence == null || bitmapProvider == null) throw new IllegalArgumentException(); 202a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 203a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mFrameSequence = frameSequence; 204a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mFrameSequenceState = frameSequence.createState(); 205a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik final int width = frameSequence.getWidth(); 206a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik final int height = frameSequence.getHeight(); 207a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 2084eb541aff092a057b27b917f09d33aba226dffedChris Craik mBitmapProvider = bitmapProvider; 2093105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mFrontBitmap = acquireAndValidateBitmap(bitmapProvider, width, height); 2103105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mBackBitmap = acquireAndValidateBitmap(bitmapProvider, width, height); 211a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mSrcRect = new Rect(0, 0, width, height); 212a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mPaint = new Paint(); 213a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mPaint.setFilterBitmap(true); 214a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 215a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mLastSwap = 0; 216a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 217a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mNextFrameToDecode = -1; 218a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mFrameSequenceState.getFrame(0, mFrontBitmap, -1); 219a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik initializeDecodingThread(); 220a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 221a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 2224eb541aff092a057b27b917f09d33aba226dffedChris Craik private void checkDestroyedLocked() { 2234eb541aff092a057b27b917f09d33aba226dffedChris Craik if (mDestroyed) { 2243105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik throw new IllegalStateException("Cannot perform operation on recycled drawable"); 2253105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2263105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2273105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2284eb541aff092a057b27b917f09d33aba226dffedChris Craik public boolean isDestroyed() { 2293105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik synchronized (mLock) { 2304eb541aff092a057b27b917f09d33aba226dffedChris Craik return mDestroyed; 2313105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2323105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2333105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2343105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik /** 2353105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * Marks the drawable as permanently recycled (and thus unusable), and releases any owned 2364eb541aff092a057b27b917f09d33aba226dffedChris Craik * Bitmaps drawable to its BitmapProvider, if attached. 2373105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik * 2384eb541aff092a057b27b917f09d33aba226dffedChris Craik * If no BitmapProvider is attached to the drawable, recycle() is called on the Bitmaps. 2393105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik */ 2404eb541aff092a057b27b917f09d33aba226dffedChris Craik public void destroy() { 2414eb541aff092a057b27b917f09d33aba226dffedChris Craik destroy(mBitmapProvider); 2424eb541aff092a057b27b917f09d33aba226dffedChris Craik } 2434eb541aff092a057b27b917f09d33aba226dffedChris Craik 2444eb541aff092a057b27b917f09d33aba226dffedChris Craik private void destroy(BitmapProvider bitmapProvider) { 2453105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik if (bitmapProvider == null) { 2463105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik throw new IllegalStateException("BitmapProvider must be non-null"); 2473105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2483105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2493105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik Bitmap bitmapToReleaseA; 2503105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik Bitmap bitmapToReleaseB; 2513105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik synchronized (mLock) { 2524eb541aff092a057b27b917f09d33aba226dffedChris Craik checkDestroyedLocked(); 2533105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2543105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik bitmapToReleaseA = mFrontBitmap; 2553105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik bitmapToReleaseB = mBackBitmap; 2563105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2573105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mFrontBitmap = null; 2583105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mBackBitmap = null; 2594eb541aff092a057b27b917f09d33aba226dffedChris Craik mDestroyed = true; 2603105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2613105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 2624eb541aff092a057b27b917f09d33aba226dffedChris Craik // For simplicity and safety, we don't destroy the state object here 2633105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik bitmapProvider.releaseBitmap(bitmapToReleaseA); 2643105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik bitmapProvider.releaseBitmap(bitmapToReleaseB); 2653105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2663105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 267a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 268a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik protected void finalize() throws Throwable { 269a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik try { 2704eb541aff092a057b27b917f09d33aba226dffedChris Craik mFrameSequenceState.destroy(); 271a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } finally { 272a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik super.finalize(); 273a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 274a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 275a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 276a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 277a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void draw(Canvas canvas) { 278a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 2794eb541aff092a057b27b917f09d33aba226dffedChris Craik checkDestroyedLocked(); 2803105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik if (mState == STATE_WAITING_TO_SWAP) { 2813105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik // may have failed to schedule mark ready runnable, 2823105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik // so go ahead and swap if swapping is due 2833105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik if (mNextSwap - SystemClock.uptimeMillis() <= 0) { 2843105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik mState = STATE_READY_TO_SWAP; 2853105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2863105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik } 2873105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik 288a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (isRunning() && mState == STATE_READY_TO_SWAP) { 289a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik // Because draw has occurred, the view system is guaranteed to no longer hold a 290a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik // reference to the old mFrontBitmap, so we now use it to produce the next frame 291a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik Bitmap tmp = mBackBitmap; 292a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mBackBitmap = mFrontBitmap; 293a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mFrontBitmap = tmp; 294a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 295a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mLastSwap = SystemClock.uptimeMillis(); 296e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 297e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik boolean continueLooping = true; 298e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik if (mNextFrameToDecode == mFrameSequence.getFrameCount() - 1) { 299e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik mCurrentLoop++; 300e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik if ((mLoopBehavior == LOOP_ONCE && mCurrentLoop == 1) || 3013105099a73d4fea3408ea0cf6b358fff77dc8b67Chris Craik (mLoopBehavior == LOOP_DEFAULT && mCurrentLoop == mFrameSequence.getDefaultLoopCount())) { 302e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik continueLooping = false; 303e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 304e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 305e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik 306e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik if (continueLooping) { 307e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik scheduleDecodeLocked(); 308e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } else { 309e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik scheduleSelf(mCallbackRunnable, 0); 310e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik } 311a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 312a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 313a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 314a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik canvas.drawBitmap(mFrontBitmap, mSrcRect, getBounds(), mPaint); 315a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 316a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 317a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik private void scheduleDecodeLocked() { 318a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mState = STATE_SCHEDULED; 319a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mNextFrameToDecode = (mNextFrameToDecode + 1) % mFrameSequence.getFrameCount(); 320a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik sDecodingThreadHandler.post(mDecodeRunnable); 321a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 322a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 323a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 324a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void run() { 325a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik // set ready to swap 326a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 327a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (mState != STATE_WAITING_TO_SWAP || mNextFrameToDecode < 0) return; 328a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mState = STATE_READY_TO_SWAP; 329a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 330a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik invalidateSelf(); 331a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 332a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 333a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 334a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void start() { 335a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (!isRunning()) { 336a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 3374eb541aff092a057b27b917f09d33aba226dffedChris Craik checkDestroyedLocked(); 338a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (mState == STATE_SCHEDULED) return; // already scheduled 339e36c5d675c8c2f900ef186a55edf71ce36ca9fa0Chris Craik mCurrentLoop = 0; 340a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik scheduleDecodeLocked(); 341a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 342a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 343a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 344a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 345a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 346a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void stop() { 347a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (isRunning()) { 348a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik unscheduleSelf(this); 349a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 350a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 351a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 352a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 353a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public boolean isRunning() { 354a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 3554eb541aff092a057b27b917f09d33aba226dffedChris Craik return mNextFrameToDecode > -1 && !mDestroyed; 356a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 357a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 358a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 359a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 360a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void unscheduleSelf(Runnable what) { 361a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik synchronized (mLock) { 362a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mNextFrameToDecode = -1; 363a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 364a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik super.unscheduleSelf(what); 365a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 366a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 367a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 368a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public boolean setVisible(boolean visible, boolean restart) { 369a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik boolean changed = super.setVisible(visible, restart); 370a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 371a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik if (!visible) { 372a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik stop(); 373a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } else if (restart || changed) { 374a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik stop(); 375a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik start(); 376a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 377a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 378a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik return changed; 379a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 380a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 381a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik // drawing properties 382a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 383a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 384a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void setFilterBitmap(boolean filter) { 385a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mPaint.setFilterBitmap(filter); 386a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 387a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 388a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 389a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void setAlpha(int alpha) { 390a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mPaint.setAlpha(alpha); 391a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 392a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 393a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 394a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public void setColorFilter(ColorFilter colorFilter) { 395a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik mPaint.setColorFilter(colorFilter); 396a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 397a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 398a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 399a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public int getIntrinsicWidth() { 400a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik return mFrameSequence.getWidth(); 401a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 402a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 403a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 404a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public int getIntrinsicHeight() { 405a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik return mFrameSequence.getHeight(); 406a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 407a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik 408a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik @Override 409a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik public int getOpacity() { 410a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik return mFrameSequence.isOpaque() ? PixelFormat.OPAQUE : PixelFormat.TRANSPARENT; 411a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik } 412a3ac0a2df64dcfb8b0b01f1cf05e9afd1439e1f4Chris Craik} 413