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/*
* Copyright (C) 2016 Cyanogen, Inc.
* Copyright (C) 2016 The CyanogenMod Project
*
* 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 org.cyanogenmod.theme.widget;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;
import java.io.IOException;
import java.util.List;
import java.util.zip.ZipFile;
import libcore.io.IoUtils;
import org.cyanogenmod.theme.util.BootAnimationHelper;
public class BootAniImageView extends ImageView {
private static final String TAG = BootAniImageView.class.getName();
private static final boolean DEBUG = false;
private static final int MAX_BUFFERS = 2;
private Bitmap[] mBuffers = new Bitmap[MAX_BUFFERS];
private int mReadBufferIndex = 0;
private int mWriteBufferIndex = 0;
private ZipFile mBootAniZip;
private List<BootAnimationHelper.AnimationPart> mAnimationParts;
private int mCurrentPart;
private int mCurrentFrame;
private int mCurrentPartPlayCount;
private int mFrameDuration;
private boolean mActive = false;
public BootAniImageView(Context context) {
this(context, null);
}
public BootAniImageView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public BootAniImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
public void setVisibility(int visibility) {
super.setVisibility(visibility);
if (visibility == VISIBLE) {
if (mBootAniZip != null) start();
} else {
stop();
}
}
@Override
protected void onDraw(Canvas canvas) {
// In case we end up in the mid dle of onDraw while the buffers are being recycled
// we catch the exception and just let frame not be rendered.
try {
super.onDraw(canvas);
} catch (RuntimeException e) {
Log.e(TAG, "Unable to draw boot animation frame.");
}
}
public synchronized boolean setBootAnimation(ZipFile bootAni) {
if (bootAni == null) {
Log.w(TAG, "Boot animation ZipFile is null.");
return false;
}
// make sure we are stopped first
stop();
if (mBootAniZip != null) {
IoUtils.closeQuietly(mBootAniZip);
// This boot animation may be a different size than the previous
// one so clear out the buffers so they can be recreated with
// the correct size.
for (int i = 0; i < MAX_BUFFERS; i++) {
if (mBuffers[i] != null) {
mBuffers[i].recycle();
mBuffers[i] = null;
}
}
}
mBootAniZip = bootAni;
try {
mAnimationParts = BootAnimationHelper.parseAnimation(mBootAniZip);
} catch (Exception e) {
// "Gotta catch 'em all"
Log.e(TAG, "Unable to set boot animation", e);
mAnimationParts = null;
mBootAniZip = null;
return false;
}
if (mAnimationParts == null || mAnimationParts.size() == 0) {
return false;
}
final BootAnimationHelper.AnimationPart part = mAnimationParts.get(0);
mCurrentPart = 0;
mCurrentPartPlayCount = part.playCount;
mFrameDuration = part.frameRateMillis;
mWriteBufferIndex = mReadBufferIndex = 0;
mCurrentFrame = 0;
getNextFrame();
return true;
}
private void getNextFrame() {
if (mAnimationParts == null || mAnimationParts.size() == 0) return;
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inBitmap = mBuffers[mWriteBufferIndex];
opts.inPreferredConfig = Bitmap.Config.RGB_565;
opts.inMutable = true;
final BootAnimationHelper.AnimationPart part = mAnimationParts.get(mCurrentPart);
try {
mBuffers[mWriteBufferIndex] =
BitmapFactory.decodeStream(mBootAniZip.getInputStream(mBootAniZip.getEntry(
part.frames.get(mCurrentFrame++))), null, opts);
} catch (IllegalArgumentException iae) {
// In case we're here because the bitmap could not be re-used, try creating a new one
opts.inBitmap = null;
try {
if (DEBUG) {
Log.d(TAG, "Trying to load frame without reusing existing bitmap", iae);
}
if (mBuffers[mWriteBufferIndex] != null) {
// clean up our old bitmap
mBuffers[mWriteBufferIndex].recycle();
mBuffers[mWriteBufferIndex] = null;
}
mBuffers[mWriteBufferIndex] =
BitmapFactory.decodeStream(mBootAniZip.getInputStream(mBootAniZip.getEntry(
part.frames.get(mCurrentFrame++))), null, opts);
} catch (Exception e) {
// Still failling? Let's log it and carry on.
Log.w(TAG, "Unable to get next frame", e);
}
} catch (IOException e) {
Log.w(TAG, "Unable to get next frame", e);
}
mWriteBufferIndex = (mWriteBufferIndex + 1) % MAX_BUFFERS;
if (mCurrentFrame >= part.frames.size()) {
if (mCurrentPartPlayCount > 0) {
if (--mCurrentPartPlayCount == 0) {
mCurrentPart++;
if (mCurrentPart >= mAnimationParts.size()) mCurrentPart = 0;
mCurrentFrame = 0;
mCurrentPartPlayCount = mAnimationParts.get(mCurrentPart).playCount;
} else {
mCurrentFrame = 0;
}
} else {
mCurrentFrame = 0;
}
}
}
public void start() {
if (mAnimationParts == null) return;
mActive = true;
post(mUpdateAnimationRunnable);
}
public void stop() {
mActive = false;
removeCallbacks(mUpdateImageRunnable);
removeCallbacks(mUpdateAnimationRunnable);
}
private Runnable mUpdateAnimationRunnable = new Runnable() {
@Override
public void run() {
if (!mActive) return;
BootAniImageView.this.postDelayed(mUpdateAnimationRunnable, mFrameDuration);
if (!isOffScreen()) {
BootAniImageView.this.post(mUpdateImageRunnable);
mReadBufferIndex = (mReadBufferIndex + 1) % MAX_BUFFERS;
getNextFrame();
}
}
};
private Runnable mUpdateImageRunnable = new Runnable() {
@Override
public void run() {
setImageBitmap(mBuffers[mReadBufferIndex]);
}
};
private boolean isOffScreen() {
int[] pos = new int[2];
getLocationOnScreen(pos);
return pos[1] >= mContext.getResources().getDisplayMetrics().heightPixels;
}
}
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