Use a separate thread to decode AnimatedImageDrawable (5b7f426f) · Commits · e / os / android_frameworks_base

core/jni/android/graphics/AnimatedImageDrawable.cpp

+12 −6

Original line number	Diff line number	Diff line
		@@ -16,16 +16,16 @@

		#include "GraphicsJNI.h"
		#include "ImageDecoder.h"
		#include "core_jni_helpers.h"
		#include "Utils.h"
		#include "core_jni_helpers.h"

		#include <hwui/AnimatedImageDrawable.h>
		#include <hwui/Canvas.h>
		#include <SkAndroidCodec.h>
		#include <SkAnimatedImage.h>
		#include <SkColorFilter.h>
		#include <SkPicture.h>
		#include <SkPictureRecorder.h>
		#include <hwui/AnimatedImageDrawable.h>
		#include <hwui/Canvas.h>

		using namespace android;

		@@ -85,6 +85,9 @@ static jlong AnimatedImageDrawable_nGetNativeFinalizer(JNIEnv* /env/, jobject
		return static_cast<jlong>(reinterpret_cast<uintptr_t>(&AnimatedImageDrawable_destruct));
		}

		// Java's FINISHED relies on this being -1
		static_assert(SkAnimatedImage::kFinished == -1);

		static jlong AnimatedImageDrawable_nDraw(JNIEnv* env, jobject /clazz/, jlong nativePtr,
		jlong canvasPtr) {
		auto* drawable = reinterpret_cast<AnimatedImageDrawable*>(nativePtr);
		@@ -115,9 +118,6 @@ static jboolean AnimatedImageDrawable_nIsRunning(JNIEnv* env, jobject /clazz/,
		return drawable->isRunning();
		}

		// Java's NOT_RUNNING relies on this being -2.0.
		static_assert(SkAnimatedImage::kNotRunning == -2.0);

		static jboolean AnimatedImageDrawable_nStart(JNIEnv* env, jobject /clazz/, jlong nativePtr) {
		auto* drawable = reinterpret_cast<AnimatedImageDrawable*>(nativePtr);
		return drawable->start();
		@@ -172,6 +172,11 @@ static long AnimatedImageDrawable_nNativeByteSize(JNIEnv* env, jobject /clazz/
		return sizeof(drawable);
		}

		static void AnimatedImageDrawable_nMarkInvisible(JNIEnv* env, jobject /clazz/, jlong nativePtr) {
		auto* drawable = reinterpret_cast<AnimatedImageDrawable*>(nativePtr);
		drawable->markInvisible();
		}

		static const JNINativeMethod gAnimatedImageDrawableMethods[] = {
		{ "nCreate", "(JLandroid/graphics/ImageDecoder;IILandroid/graphics/Rect;)J", (void*) AnimatedImageDrawable_nCreate },
		{ "nGetNativeFinalizer", "()J", (void*) AnimatedImageDrawable_nGetNativeFinalizer },
		@@ -185,6 +190,7 @@ static const JNINativeMethod gAnimatedImageDrawableMethods[] = {
		{ "nSetLoopCount", "(JI)V", (void*) AnimatedImageDrawable_nSetLoopCount },
		{ "nSetOnAnimationEndListener", "(JLandroid/graphics/drawable/AnimatedImageDrawable;)V", (void*) AnimatedImageDrawable_nSetOnAnimationEndListener },
		{ "nNativeByteSize", "(J)J", (void*) AnimatedImageDrawable_nNativeByteSize },
		{ "nMarkInvisible", "(J)V", (void*) AnimatedImageDrawable_nMarkInvisible },
		};

		int register_android_graphics_drawable_AnimatedImageDrawable(JNIEnv* env) {

graphics/java/android/graphics/drawable/AnimatedImageDrawable.java

+35 −13

Original line number	Diff line number	Diff line
		@@ -16,6 +16,8 @@

		package android.graphics.drawable;

		import dalvik.annotation.optimization.FastNative;

		import android.annotation.IntRange;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		@@ -60,7 +62,6 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		private int mIntrinsicHeight;

		private boolean mStarting;
		private boolean mRunning;

		private Handler mHandler;

		@@ -222,8 +223,8 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		return mIntrinsicHeight;
		}

		// nDraw returns -2 if the animation is not running.
		private static final int NOT_RUNNING = -2;
		// nDraw returns -1 if the animation has finished.
		private static final int FINISHED = -1;

		@Override
		public void draw(@NonNull Canvas canvas) {
		@@ -235,8 +236,6 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		mStarting = false;

		postOnAnimationStart();

		mRunning = true;
		}

		long nextUpdate = nDraw(mState.mNativePtr, canvas.getNativeCanvasWrapper());
		@@ -244,12 +243,9 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		// will manage the animation
		if (nextUpdate > 0) {
		scheduleSelf(mRunnable, nextUpdate);
		} else if (nextUpdate == NOT_RUNNING) {
		// -2 means the animation ended, when drawn in software mode.
		if (mRunning) {
		} else if (nextUpdate == FINISHED) {
		// This means the animation was drawn in software mode and ended.
		postOnAnimationEnd();
		mRunning = false;
		}
		}
		}

		@@ -292,6 +288,19 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		return PixelFormat.TRANSLUCENT;
		}

		@Override
		public boolean setVisible(boolean visible, boolean restart) {
		if (!super.setVisible(visible, restart)) {
		return false;
		}

		if (!visible) {
		nMarkInvisible(mState.mNativePtr);
		}

		return true;
		}

		// Animatable overrides
		/**
		* Return whether the animation is currently running.
		@@ -301,7 +310,10 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		*/
		@Override
		public boolean isRunning() {
		return mRunning;
		if (mState == null) {
		throw new IllegalStateException("called isRunning on empty AnimatedImageDrawable");
		}
		return nIsRunning(mState.mNativePtr);
		}

		/**
		@@ -336,7 +348,6 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		throw new IllegalStateException("called stop on empty AnimatedImageDrawable");
		}
		nStop(mState.mNativePtr);
		mRunning = false;
		}

		// Animatable2 overrides
		@@ -405,18 +416,29 @@ public class AnimatedImageDrawable extends Drawable implements Animatable2 {
		private static native long nCreate(long nativeImageDecoder,
		@Nullable ImageDecoder decoder, int width, int height, Rect cropRect)
		throws IOException;
		@FastNative
		private static native long nGetNativeFinalizer();
		private static native long nDraw(long nativePtr, long canvasNativePtr);
		@FastNative
		private static native void nSetAlpha(long nativePtr, int alpha);
		@FastNative
		private static native int nGetAlpha(long nativePtr);
		@FastNative
		private static native void nSetColorFilter(long nativePtr, long nativeFilter);
		@FastNative
		private static native boolean nIsRunning(long nativePtr);
		// Return whether the animation started.
		@FastNative
		private static native boolean nStart(long nativePtr);
		@FastNative
		private static native void nStop(long nativePtr);
		@FastNative
		private static native void nSetLoopCount(long nativePtr, int loopCount);
		// Pass the drawable down to native so it can call onAnimationEnd.
		private static native void nSetOnAnimationEndListener(long nativePtr,
		@Nullable AnimatedImageDrawable drawable);
		@FastNative
		private static native long nNativeByteSize(long nativePtr);
		@FastNative
		private static native void nMarkInvisible(long nativePtr);
		}

libs/hwui/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -138,6 +138,7 @@ cc_defaults {

		srcs: [
		"hwui/AnimatedImageDrawable.cpp",
		"hwui/AnimatedImageThread.cpp",
		"hwui/Bitmap.cpp",
		"font/CacheTexture.cpp",
		"font/Font.cpp",

libs/hwui/hwui/AnimatedImageDrawable.cpp

+167 −80

Original line number	Diff line number	Diff line
		@@ -15,21 +15,21 @@
		*/

		#include "AnimatedImageDrawable.h"
		#include "AnimatedImageThread.h"

		#include "thread/Task.h"
		#include "thread/TaskManager.h"
		#include "thread/TaskProcessor.h"
		#include "utils/TraceUtils.h"

		#include <SkPicture.h>
		#include <SkRefCnt.h>
		#include <SkTime.h>
		#include <SkTLazy.h>
		#include <SkTime.h>

		namespace android {

		AnimatedImageDrawable::AnimatedImageDrawable(sk_sp<SkAnimatedImage> animatedImage)
		: mSkAnimatedImage(std::move(animatedImage)) { }
		: mSkAnimatedImage(std::move(animatedImage)) {
		mTimeToShowNextSnapshot = mSkAnimatedImage->currentFrameDuration();
		}

		void AnimatedImageDrawable::syncProperties() {
		mAlpha = mStagingAlpha;
		@@ -37,88 +37,78 @@ void AnimatedImageDrawable::syncProperties() {
		}

		bool AnimatedImageDrawable::start() {
		SkAutoExclusive lock(mLock);
		if (mSkAnimatedImage->isRunning()) {
		if (mRunning) {
		return false;
		}

		if (!mSnapshot) {
		mSnapshot.reset(mSkAnimatedImage->newPictureSnapshot());
		}

		// While stopped, update() does not decode, but it does advance the time.
		// This prevents us from skipping ahead when we resume.
		const double currentTime = SkTime::GetMSecs();
		mSkAnimatedImage->update(currentTime);
		mSkAnimatedImage->start();
		return mSkAnimatedImage->isRunning();
		mRunning = true;
		return true;
		}

		void AnimatedImageDrawable::stop() {
		SkAutoExclusive lock(mLock);
		mSkAnimatedImage->stop();
		mRunning = false;
		}

		bool AnimatedImageDrawable::isRunning() {
		return mSkAnimatedImage->isRunning();
		return mRunning;
		}

		// This is really a Task<void> but that doesn't really work when Future<>
		// expects to be able to get/set a value
		class AnimatedImageDrawable::AnimatedImageTask : public uirenderer::Task<bool> {
		public:
		AnimatedImageTask(AnimatedImageDrawable* animatedImageDrawable)
		: mAnimatedImageDrawable(sk_ref_sp(animatedImageDrawable)) {}

		sk_sp<AnimatedImageDrawable> mAnimatedImageDrawable;
		bool mIsCompleted = false;
		};
		bool AnimatedImageDrawable::nextSnapshotReady() const {
		return mNextSnapshot.valid() &&
		mNextSnapshot.wait_for(std::chrono::seconds(0)) == std::future_status::ready;
		}

		class AnimatedImageDrawable::AnimatedImageTaskProcessor : public uirenderer::TaskProcessor<bool> {
		public:
		explicit AnimatedImageTaskProcessor(uirenderer::TaskManager* taskManager)
		: uirenderer::TaskProcessor<bool>(taskManager) {}
		~AnimatedImageTaskProcessor() {}
		// Only called on the RenderThread while UI thread is locked.
		bool AnimatedImageDrawable::isDirty() {
		const double currentTime = SkTime::GetMSecs();
		const double lastWallTime = mLastWallTime;

		virtual void onProcess(const sp<uirenderer::Task<bool>>& task) override {
		ATRACE_NAME("Updating AnimatedImageDrawables");
		AnimatedImageTask* t = static_cast<AnimatedImageTask*>(task.get());
		t->mAnimatedImageDrawable->update();
		t->mIsCompleted = true;
		task->setResult(true);
		};
		};
		mLastWallTime = currentTime;
		if (!mRunning) {
		mDidDraw = false;
		return false;
		}

		void AnimatedImageDrawable::scheduleUpdate(uirenderer::TaskManager* taskManager) {
		if (!mSkAnimatedImage->isRunning()
		\|\| (mDecodeTask.get() != nullptr && !mDecodeTask->mIsCompleted)) {
		return;
		std::unique_lock lock{mSwapLock};
		if (mDidDraw) {
		mCurrentTime += currentTime - lastWallTime;
		mDidDraw = false;
		}

		if (!mDecodeTaskProcessor.get()) {
		mDecodeTaskProcessor = new AnimatedImageTaskProcessor(taskManager);
		if (!mNextSnapshot.valid()) {
		// Need to trigger onDraw in order to start decoding the next frame.
		return true;
		}

		// TODO get one frame ahead and only schedule updates when you need to replenish
		mDecodeTask = new AnimatedImageTask(this);
		mDecodeTaskProcessor->add(mDecodeTask);
		return nextSnapshotReady() && mCurrentTime >= mTimeToShowNextSnapshot;
		}

		void AnimatedImageDrawable::update() {
		SkAutoExclusive lock(mLock);
		// Only called on the AnimatedImageThread.
		AnimatedImageDrawable::Snapshot AnimatedImageDrawable::decodeNextFrame() {
		Snapshot snap;
		{
		std::unique_lock lock{mImageLock};
		snap.mDuration = mSkAnimatedImage->decodeNextFrame();
		snap.mPic.reset(mSkAnimatedImage->newPictureSnapshot());
		}

		if (!mSkAnimatedImage->isRunning()) {
		return;
		return snap;
		}

		const double currentTime = SkTime::GetMSecs();
		if (currentTime >= mNextFrameTime) {
		mNextFrameTime = mSkAnimatedImage->update(currentTime);
		mSnapshot.reset(mSkAnimatedImage->newPictureSnapshot());
		mIsDirty = true;
		// Only called on the AnimatedImageThread.
		AnimatedImageDrawable::Snapshot AnimatedImageDrawable::reset() {
		Snapshot snap;
		{
		std::unique_lock lock{mImageLock};
		mSkAnimatedImage->reset();
		snap.mPic.reset(mSkAnimatedImage->newPictureSnapshot());
		snap.mDuration = mSkAnimatedImage->currentFrameDuration();
		}

		return snap;
		}

		// Only called on the RenderThread.
		void AnimatedImageDrawable::onDraw(SkCanvas* canvas) {
		SkTLazy<SkPaint> lazyPaint;
		if (mAlpha != SK_AlphaOPAQUE \|\| mColorFilter.get()) {
		@@ -128,25 +118,71 @@ void AnimatedImageDrawable::onDraw(SkCanvas* canvas) {
		lazyPaint.get()->setFilterQuality(kLow_SkFilterQuality);
		}

		SkAutoExclusive lock(mLock);
		if (mSnapshot) {
		canvas->drawPicture(mSnapshot, nullptr, lazyPaint.getMaybeNull());
		} else {
		// TODO: we could potentially keep the cached surface around if there is a paint and we know
		// the drawable is attached to the view system
		mDidDraw = true;

		bool drewDirectly = false;
		if (!mSnapshot.mPic) {
		// The image is not animating, and never was. Draw directly from
		// mSkAnimatedImage.
		SkAutoCanvasRestore acr(canvas, false);
		if (lazyPaint.isValid()) {
		canvas->saveLayer(mSkAnimatedImage->getBounds(), lazyPaint.get());
		}

		std::unique_lock lock{mImageLock};
		mSkAnimatedImage->draw(canvas);
		drewDirectly = true;
		}

		if (mRunning && mFinished) {
		auto& thread = uirenderer::AnimatedImageThread::getInstance();
		mNextSnapshot = thread.reset(sk_ref_sp(this));
		mFinished = false;
		}

		bool finalFrame = false;
		if (mRunning && nextSnapshotReady()) {
		std::unique_lock lock{mSwapLock};
		if (mCurrentTime >= mTimeToShowNextSnapshot) {
		mSnapshot = mNextSnapshot.get();
		const double timeToShowCurrentSnap = mTimeToShowNextSnapshot;
		if (mSnapshot.mDuration == SkAnimatedImage::kFinished) {
		finalFrame = true;
		mRunning = false;
		mFinished = true;
		} else {
		mTimeToShowNextSnapshot += mSnapshot.mDuration;
		if (mCurrentTime >= mTimeToShowNextSnapshot) {
		// This would mean showing the current frame very briefly. It's
		// possible that not being displayed for a time resulted in
		// mCurrentTime being far ahead. Prevent showing many frames
		// rapidly by going back to the beginning of this frame time.
		mCurrentTime = timeToShowCurrentSnap;
		}
		}
		}
		}

		if (mRunning && !mNextSnapshot.valid()) {
		auto& thread = uirenderer::AnimatedImageThread::getInstance();
		mNextSnapshot = thread.decodeNextFrame(sk_ref_sp(this));
		}

		mIsDirty = false;
		if (!drewDirectly) {
		// No other thread will modify mCurrentSnap so this should be safe to
		// use without locking.
		canvas->drawPicture(mSnapshot.mPic, nullptr, lazyPaint.getMaybeNull());
		}

		if (finalFrame) {
		if (mEndListener) {
		mEndListener->onAnimationEnd();
		mEndListener = nullptr;
		}
		}
		}

		double AnimatedImageDrawable::drawStaging(SkCanvas* canvas) {
		// update the drawable with the current time
		double nextUpdate = mSkAnimatedImage->update(SkTime::GetMSecs());
		SkAutoCanvasRestore acr(canvas, false);
		if (mStagingAlpha != SK_AlphaOPAQUE \|\| mStagingColorFilter.get()) {
		SkPaint paint;
		@@ -154,8 +190,59 @@ double AnimatedImageDrawable::drawStaging(SkCanvas* canvas) {
		paint.setColorFilter(mStagingColorFilter);
		canvas->saveLayer(mSkAnimatedImage->getBounds(), &paint);
		}

		if (mFinished && !mRunning) {
		// Continue drawing the last frame, and return 0 to indicate no need to
		// redraw.
		std::unique_lock lock{mImageLock};
		canvas->drawDrawable(mSkAnimatedImage.get());
		return 0.0;
		}

		bool update = false;
		{
		const double currentTime = SkTime::GetMSecs();
		std::unique_lock lock{mSwapLock};
		// mLastWallTime starts off at 0. If it is still 0, just update it to
		// the current time and avoid updating
		if (mLastWallTime == 0.0) {
		mCurrentTime = currentTime;
		} else if (mRunning) {
		if (mFinished) {
		mCurrentTime = currentTime;
		{
		std::unique_lock lock{mImageLock};
		mSkAnimatedImage->reset();
		}
		mTimeToShowNextSnapshot = currentTime + mSkAnimatedImage->currentFrameDuration();
		} else {
		mCurrentTime += currentTime - mLastWallTime;
		update = mCurrentTime >= mTimeToShowNextSnapshot;
		}
		}
		mLastWallTime = currentTime;
		}

		double duration = 0.0;
		{
		std::unique_lock lock{mImageLock};
		if (update) {
		duration = mSkAnimatedImage->decodeNextFrame();
		}

		canvas->drawDrawable(mSkAnimatedImage.get());
		return nextUpdate;
		}

		}; // namespace android
		std::unique_lock lock{mSwapLock};
		if (update) {
		if (duration == SkAnimatedImage::kFinished) {
		mRunning = false;
		mFinished = true;
		} else {
		mTimeToShowNextSnapshot += duration;
		}
		}
		return mTimeToShowNextSnapshot;
		}

		} // namespace android

libs/hwui/hwui/AnimatedImageDrawable.h

+63 −31

Original line number	Diff line number	Diff line
		@@ -17,22 +17,20 @@
		#pragma once

		#include <cutils/compiler.h>
		#include <utils/Macros.h>
		#include <utils/RefBase.h>

		#include <SkAnimatedImage.h>
		#include <SkCanvas.h>
		#include <SkColorFilter.h>
		#include <SkDrawable.h>
		#include <SkMutex.h>
		#include <SkPicture.h>

		class SkPicture;
		#include <future>
		#include <mutex>

		namespace android {

		namespace uirenderer {
		class TaskManager;
		}

		class OnAnimationEndListener {
		public:
		virtual ~OnAnimationEndListener() {}
		@@ -41,68 +39,102 @@ public:
		};

		/**
		* Native component of android.graphics.drawable.AnimatedImageDrawables.java. This class can be
		* drawn into Canvas.h and maintains the state needed to drive the animation from the RenderThread.
		* Native component of android.graphics.drawable.AnimatedImageDrawables.java.
		* This class can be drawn into Canvas.h and maintains the state needed to drive
		* the animation from the RenderThread.
		*/
		class ANDROID_API AnimatedImageDrawable : public SkDrawable {
		public:
		AnimatedImageDrawable(sk_sp<SkAnimatedImage> animatedImage);

		/**
		* This returns true if the animation has updated and signals that the next draw will contain
		* new content.
		* This updates the internal time and returns true if the animation needs
		* to be redrawn.
		*
		* This is called on RenderThread, while the UI thread is locked.
		*/
		bool isDirty() const { return mIsDirty; }
		bool isDirty();

		int getStagingAlpha() const { return mStagingAlpha; }
		void setStagingAlpha(int alpha) { mStagingAlpha = alpha; }
		void setStagingColorFilter(sk_sp<SkColorFilter> filter) { mStagingColorFilter = filter; }
		void syncProperties();

		virtual SkRect onGetBounds() override {
		return mSkAnimatedImage->getBounds();
		}
		virtual SkRect onGetBounds() override { return mSkAnimatedImage->getBounds(); }

		// Draw to software canvas, and return time to next draw.
		double drawStaging(SkCanvas* canvas);

		// Returns true if the animation was started; false otherwise (e.g. it was already running)
		// Returns true if the animation was started; false otherwise (e.g. it was
		// already running)
		bool start();
		void stop();
		bool isRunning();
		void setRepetitionCount(int count) {
		mSkAnimatedImage->setRepetitionCount(count);
		}
		void setRepetitionCount(int count) { mSkAnimatedImage->setRepetitionCount(count); }

		void setOnAnimationEndListener(std::unique_ptr<OnAnimationEndListener> listener) {
		mEndListener = std::move(listener);
		}

		void scheduleUpdate(uirenderer::TaskManager* taskManager);
		void markInvisible() { mDidDraw = false; }

		struct Snapshot {
		sk_sp<SkPicture> mPic;
		int mDuration;

		Snapshot() = default;

		Snapshot(Snapshot&&) = default;
		Snapshot& operator=(Snapshot&&) = default;

		PREVENT_COPY_AND_ASSIGN(Snapshot);
		};

		// These are only called on AnimatedImageThread.
		Snapshot decodeNextFrame();
		Snapshot reset();

		protected:
		virtual void onDraw(SkCanvas* canvas) override;

		private:
		void update();

		sk_sp<SkAnimatedImage> mSkAnimatedImage;
		sk_sp<SkPicture> mSnapshot;
		SkMutex mLock;
		bool mRunning = false;
		bool mFinished = false;

		// A snapshot of the current frame to draw.
		Snapshot mSnapshot;

		std::future<Snapshot> mNextSnapshot;

		bool nextSnapshotReady() const;

		// When to switch from mSnapshot to mNextSnapshot.
		double mTimeToShowNextSnapshot = 0.0;

		// The current time for the drawable itself.
		double mCurrentTime = 0.0;

		// The wall clock of the last time we called isDirty.
		double mLastWallTime = 0.0;

		// Whether we drew since the last call to isDirty.
		bool mDidDraw = false;

		// Locked when assigning snapshots and times. Operations while this is held
		// should be short.
		std::mutex mSwapLock;

		// Locked when mSkAnimatedImage is being updated or drawn.
		std::mutex mImageLock;

		int mStagingAlpha = SK_AlphaOPAQUE;
		sk_sp<SkColorFilter> mStagingColorFilter;

		int mAlpha = SK_AlphaOPAQUE;
		sk_sp<SkColorFilter> mColorFilter;
		double mNextFrameTime = 0.0;
		bool mIsDirty = false;

		class AnimatedImageTask;
		class AnimatedImageTaskProcessor;
		sp<AnimatedImageTask> mDecodeTask;
		sp<AnimatedImageTaskProcessor> mDecodeTaskProcessor;

		std::unique_ptr<OnAnimationEndListener> mEndListener;
		};

		}; // namespace android
		} // namespace android