Remove all hacks around ref counting in Bitmap (c69853c8) · Commits · e / os / android_frameworks_base

core/jni/android/graphics/Bitmap.cpp

+268 −228

Original line number	Diff line number	Diff line
		@@ -31,34 +31,106 @@
		#define DEBUG_PARCEL 0
		#define ASHMEM_BITMAP_MIN_SIZE (128 * (1 << 10))

		static jclass gBitmap_class;
		static jfieldID gBitmap_nativePtr;
		static jmethodID gBitmap_constructorMethodID;
		static jmethodID gBitmap_reinitMethodID;
		static jmethodID gBitmap_getAllocationByteCountMethodID;

		namespace android {

		class WrappedPixelRef : public SkPixelRef {
		class Bitmap {
		public:
		WrappedPixelRef(Bitmap* wrapper, void* storage,
		const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable)
		: SkPixelRef(info)
		, mBitmap(*wrapper)
		, mStorage(storage) {
		reconfigure(info, rowBytes, ctable);
		Bitmap(PixelRef* pixelRef)
		: mPixelRef(pixelRef) { }

		void freePixels() {
		mInfo = mPixelRef->info();
		mHasHardwareMipMap = mPixelRef->hasHardwareMipMap();
		mAllocationSize = mPixelRef->getAllocationByteCount();
		mRowBytes = mPixelRef->rowBytes();
		mGenerationId = mPixelRef->getGenerationID();
		mPixelRef.reset();
		}

		bool valid() {
		return !!mPixelRef;
		}

		PixelRef* pixelRef() { return mPixelRef.get(); }

		void assertValid() {
		LOG_ALWAYS_FATAL_IF(!valid(), "Error, cannot access an invalid/free'd bitmap here!");
		}

		void getSkBitmap(SkBitmap* outBitmap) {
		assertValid();
		mPixelRef->getSkBitmap(outBitmap);
		}

		bool hasHardwareMipMap() {
		if (mPixelRef) {
		return mPixelRef->hasHardwareMipMap();
		}
		return mHasHardwareMipMap;
		}

		void setHasHardwareMipMap(bool hasMipMap) {
		assertValid();
		mPixelRef->setHasHardwareMipMap(hasMipMap);
		}

		void setAlphaType(SkAlphaType alphaType) {
		assertValid();
		mPixelRef->setAlphaType(alphaType);
		}

		~WrappedPixelRef() {
		// Tell SkRefCnt that everything is as it expects by forcing
		// the refcnt to 1
		internal_dispose_restore_refcnt_to_1();
		SkSafeUnref(mColorTable);
		const SkImageInfo& info() {
		if (mPixelRef) {
		return mPixelRef->info();
		}
		return mInfo;
		}

		size_t getAllocationByteCount() const {
		if (mPixelRef) {
		return mPixelRef->getAllocationByteCount();
		}
		return mAllocationSize;
		}

		void reconfigure(const SkImageInfo& newInfo, size_t rowBytes, SkColorTable* ctable) {
		size_t rowBytes() const {
		if (mPixelRef) {
		return mPixelRef->rowBytes();
		}
		return mRowBytes;
		}

		uint32_t getGenerationID() const {
		if (mPixelRef) {
		return mPixelRef->getGenerationID();
		}
		return mGenerationId;
		}

		~Bitmap() { }

		private:
		sk_sp<PixelRef> mPixelRef;
		SkImageInfo mInfo;
		bool mHasHardwareMipMap;
		size_t mAllocationSize;
		size_t mRowBytes;
		uint32_t mGenerationId;
		};

		void PixelRef::reconfigure(const SkImageInfo& newInfo, size_t rowBytes, SkColorTable* ctable) {
		if (kIndex_8_SkColorType != newInfo.colorType()) {
		ctable = nullptr;
		}
		mRowBytes = rowBytes;
		if (mColorTable != ctable) {
		SkSafeUnref(mColorTable);
		mColorTable = ctable;
		SkSafeRef(mColorTable);
		if (mColorTable.get() != ctable) {
		mColorTable.reset(ctable);
		}

		// Need to validate the alpha type to filter against the color type
		@@ -80,103 +152,39 @@ public:
		// Docs say to only call this in the ctor, but we're going to call
		// it anyway even if this isn't always the ctor.
		// TODO: Fix this too as part of the above TODO
		setPreLocked(mStorage, mRowBytes, mColorTable);
		}

		// Can't mark as override since SkPixelRef::rowBytes isn't virtual
		// but that's OK since we just want BitmapWrapper to be able to rely
		// on calling rowBytes() on an unlocked pixelref, which it will be
		// doing on a WrappedPixelRef type, not a SkPixelRef, so static
		// dispatching will do what we want.
		size_t rowBytes() const { return mRowBytes; }
		SkColorTable* colorTable() const { return mColorTable; }

		bool hasHardwareMipMap() const {
		return mHasHardwareMipMap;
		setPreLocked(getStorage(), mRowBytes, mColorTable.get());
		}

		void setHasHardwareMipMap(bool hasMipMap) {
		mHasHardwareMipMap = hasMipMap;
		}

		protected:
		virtual bool onNewLockPixels(LockRec* rec) override {
		rec->fPixels = mStorage;
		rec->fRowBytes = mRowBytes;
		rec->fColorTable = mColorTable;
		return true;
		}

		virtual void onUnlockPixels() override {
		// nothing
		}

		virtual size_t getAllocatedSizeInBytes() const override {
		return info().getSafeSize(mRowBytes);
		}

		private:
		Bitmap& mBitmap;
		void* mStorage;
		size_t mRowBytes = 0;
		SkColorTable* mColorTable = nullptr;
		bool mHasHardwareMipMap = false;

		virtual void internal_dispose() const override {
		mBitmap.onStrongRefDestroyed();
		}
		};

		Bitmap::Bitmap(void* address, size_t size, const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable)
		: mPixelStorageType(PixelStorageType::Heap) {
		PixelRef::PixelRef(void* address, size_t size, const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable)
		: SkPixelRef(info)
		, mPixelStorageType(PixelStorageType::Heap) {
		mPixelStorage.heap.address = address;
		mPixelStorage.heap.size = size;
		mPixelRef.reset(new WrappedPixelRef(this, address, info, rowBytes, ctable));
		// Note: this will trigger a call to onStrongRefDestroyed(), but
		// we want the pixel ref to have a ref count of 0 at this point
		mPixelRef->unref();
		reconfigure(info, rowBytes, ctable);
		}

		Bitmap::Bitmap(void* address, void* context, FreeFunc freeFunc,
		PixelRef::PixelRef(void* address, void* context, FreeFunc freeFunc,
		const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable)
		: mPixelStorageType(PixelStorageType::External) {
		: SkPixelRef(info)
		, mPixelStorageType(PixelStorageType::External) {
		mPixelStorage.external.address = address;
		mPixelStorage.external.context = context;
		mPixelStorage.external.freeFunc = freeFunc;
		mPixelRef.reset(new WrappedPixelRef(this, address, info, rowBytes, ctable));
		// Note: this will trigger a call to onStrongRefDestroyed(), but
		// we want the pixel ref to have a ref count of 0 at this point
		mPixelRef->unref();
		reconfigure(info, rowBytes, ctable);
		}

		Bitmap::Bitmap(void* address, int fd, size_t mappedSize,
		PixelRef::PixelRef(void* address, int fd, size_t mappedSize,
		const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable)
		: mPixelStorageType(PixelStorageType::Ashmem) {
		: SkPixelRef(info)
		, mPixelStorageType(PixelStorageType::Ashmem) {
		mPixelStorage.ashmem.address = address;
		mPixelStorage.ashmem.fd = fd;
		mPixelStorage.ashmem.size = mappedSize;
		mPixelRef.reset(new WrappedPixelRef(this, address, info, rowBytes, ctable));
		// Note: this will trigger a call to onStrongRefDestroyed(), but
		// we want the pixel ref to have a ref count of 0 at this point
		mPixelRef->unref();
		}
		Bitmap::~Bitmap() {
		doFreePixels();
		}

		void Bitmap::freePixels() {
		AutoMutex _lock(mLock);
		if (mPinnedRefCount == 0) {
		doFreePixels();
		mPixelStorageType = PixelStorageType::Invalid;
		}
		reconfigure(info, rowBytes, ctable);
		}

		void Bitmap::doFreePixels() {
		PixelRef::~PixelRef() {
		switch (mPixelStorageType) {
		case PixelStorageType::Invalid:
		// already free'd, nothing to do
		break;
		case PixelStorageType::External:
		mPixelStorage.external.freeFunc(mPixelStorage.external.address,
		mPixelStorage.external.context);
		@@ -191,135 +199,76 @@ void Bitmap::doFreePixels() {
		}

		if (android::uirenderer::Caches::hasInstance()) {
		android::uirenderer::Caches::getInstance().textureCache.releaseTexture(
		mPixelRef->getStableID());
		android::uirenderer::Caches::getInstance().textureCache.releaseTexture(getStableID());
		}
		}

		bool Bitmap::hasHardwareMipMap() {
		return mPixelRef->hasHardwareMipMap();
		bool PixelRef::hasHardwareMipMap() const {
		return mHasHardwareMipMap;
		}

		void Bitmap::setHasHardwareMipMap(bool hasMipMap) {
		mPixelRef->setHasHardwareMipMap(hasMipMap);
		void PixelRef::setHasHardwareMipMap(bool hasMipMap) {
		mHasHardwareMipMap = hasMipMap;
		}

		int Bitmap::getAshmemFd() const {
		void* PixelRef::getStorage() const {
		switch (mPixelStorageType) {
		case PixelStorageType::External:
		return mPixelStorage.external.address;
		case PixelStorageType::Ashmem:
		return mPixelStorage.ashmem.fd;
		default:
		return -1;
		}
		}

		size_t Bitmap::getAllocationByteCount() const {
		switch (mPixelStorageType) {
		return mPixelStorage.ashmem.address;
		case PixelStorageType::Heap:
		return mPixelStorage.heap.size;
		default:
		return rowBytes() * height();
		return mPixelStorage.heap.address;
		}
		}

		const SkImageInfo& Bitmap::info() const {
		return mPixelRef->info();
		bool PixelRef::onNewLockPixels(LockRec* rec) {
		rec->fPixels = getStorage();
		rec->fRowBytes = mRowBytes;
		rec->fColorTable = mColorTable.get();
		return true;
		}

		size_t Bitmap::rowBytes() const {
		return mPixelRef->rowBytes();
		size_t PixelRef::getAllocatedSizeInBytes() const {
		return info().getSafeSize(mRowBytes);
		}

		SkPixelRef* Bitmap::peekAtPixelRef() const {
		assertValid();
		return mPixelRef.get();
		int PixelRef::getAshmemFd() const {
		switch (mPixelStorageType) {
		case PixelStorageType::Ashmem:
		return mPixelStorage.ashmem.fd;
		default:
		return -1;
		}

		SkPixelRef* Bitmap::refPixelRef() {
		assertValid();
		android::AutoMutex _lock(mLock);
		return refPixelRefLocked();
		}

		SkPixelRef* Bitmap::refPixelRefLocked() {
		mPixelRef->ref();
		if (mPixelRef->unique()) {
		// We just restored this from 0, pin the pixels and inc the strong count
		// Note that there might be an incoming onStrongRefDestroyed from whatever
		// last unref'd
		mPinnedRefCount++;
		size_t PixelRef::getAllocationByteCount() const {
		switch (mPixelStorageType) {
		case PixelStorageType::Heap:
		return mPixelStorage.heap.size;
		default:
		return rowBytes() * height();
		}
		return mPixelRef.get();
		}

		void Bitmap::reconfigure(const SkImageInfo& info, size_t rowBytes,
		SkColorTable* ctable) {
		mPixelRef->reconfigure(info, rowBytes, ctable);
		}

		void Bitmap::reconfigure(const SkImageInfo& info) {
		void PixelRef::reconfigure(const SkImageInfo& info) {
		reconfigure(info, info.minRowBytes(), nullptr);
		}

		void Bitmap::setAlphaType(SkAlphaType alphaType) {
		void PixelRef::setAlphaType(SkAlphaType alphaType) {
		if (!SkColorTypeValidateAlphaType(info().colorType(), alphaType, &alphaType)) {
		return;
		}

		mPixelRef->changeAlphaType(alphaType);
		}

		void Bitmap::detachFromJava() {
		bool disposeSelf;
		{
		android::AutoMutex _lock(mLock);
		mAttachedToJava = false;
		disposeSelf = shouldDisposeSelfLocked();
		}
		if (disposeSelf) {
		delete this;
		}
		}

		bool Bitmap::shouldDisposeSelfLocked() {
		return mPinnedRefCount == 0 && !mAttachedToJava;
		}


		void Bitmap::onStrongRefDestroyed() {
		bool disposeSelf = false;
		{
		android::AutoMutex _lock(mLock);
		if (mPinnedRefCount > 0) {
		mPinnedRefCount--;
		if (mPinnedRefCount == 0) {
		disposeSelf = shouldDisposeSelfLocked();
		}
		}
		}
		if (disposeSelf) {
		delete this;
		}
		changeAlphaType(alphaType);
		}

		void Bitmap::getSkBitmap(SkBitmap* outBitmap) {
		assertValid();
		android::AutoMutex _lock(mLock);
		// Safe because mPixelRef is a WrappedPixelRef type, otherwise rowBytes()
		// would require locking the pixels first.
		outBitmap->setInfo(mPixelRef->info(), mPixelRef->rowBytes());
		outBitmap->setPixelRef(refPixelRefLocked())->unref();
		outBitmap->setHasHardwareMipMap(hasHardwareMipMap());
		void PixelRef::getSkBitmap(SkBitmap* outBitmap) {
		outBitmap->setInfo(info(), rowBytes());
		outBitmap->setPixelRef(this);
		outBitmap->setHasHardwareMipMap(mHasHardwareMipMap);
		}

		void Bitmap::assertValid() const {
		LOG_ALWAYS_FATAL_IF(mPixelStorageType == PixelStorageType::Invalid,
		"Error, cannot access an invalid/free'd bitmap here!");
		}

		} // namespace android

		using namespace android;

		// Convenience class that does not take a global ref on the pixels, relying
		// on the caller already having a local JNI ref
		@@ -333,7 +282,7 @@ public:
		}

		void* pixels() {
		return mBitmap->peekAtPixelRef()->pixels();
		return mBitmap->pixelRef()->pixels();
		}

		bool valid() {
		@@ -344,6 +293,78 @@ private:
		Bitmap* mBitmap;
		};

		namespace bitmap {

		// Assert that bitmap's SkAlphaType is consistent with isPremultiplied.
		static void assert_premultiplied(const SkImageInfo& info, bool isPremultiplied) {
		// kOpaque_SkAlphaType and kIgnore_SkAlphaType mean that isPremultiplied is
		// irrelevant. This just tests to ensure that the SkAlphaType is not
		// opposite of isPremultiplied.
		if (isPremultiplied) {
		SkASSERT(info.alphaType() != kUnpremul_SkAlphaType);
		} else {
		SkASSERT(info.alphaType() != kPremul_SkAlphaType);
		}
		}

		void reinitBitmap(JNIEnv* env, jobject javaBitmap, const SkImageInfo& info,
		bool isPremultiplied)
		{
		// The caller needs to have already set the alpha type properly, so the
		// native SkBitmap stays in sync with the Java Bitmap.
		assert_premultiplied(info, isPremultiplied);

		env->CallVoidMethod(javaBitmap, gBitmap_reinitMethodID,
		info.width(), info.height(), isPremultiplied);
		}

		int getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap)
		{
		return env->CallIntMethod(javaBitmap, gBitmap_getAllocationByteCountMethodID);
		}

		jobject createBitmap(JNIEnv* env, PixelRef* pixelRef,
		int bitmapCreateFlags, jbyteArray ninePatchChunk, jobject ninePatchInsets,
		int density) {
		bool isMutable = bitmapCreateFlags & kBitmapCreateFlag_Mutable;
		bool isPremultiplied = bitmapCreateFlags & kBitmapCreateFlag_Premultiplied;
		// The caller needs to have already set the alpha type properly, so the
		// native SkBitmap stays in sync with the Java Bitmap.
		assert_premultiplied(pixelRef->info(), isPremultiplied);
		Bitmap* bitmap = new Bitmap(pixelRef);
		jobject obj = env->NewObject(gBitmap_class, gBitmap_constructorMethodID,
		reinterpret_cast<jlong>(bitmap), pixelRef->width(), pixelRef->height(), density, isMutable,
		isPremultiplied, ninePatchChunk, ninePatchInsets);

		if (env->ExceptionCheck() != 0) {
		ALOGE("*** Uncaught exception returned from Java call!\n");
		env->ExceptionDescribe();
		}
		return obj;
		}

		void toSkBitmap(jlong bitmapHandle, SkBitmap* outBitmap) {
		LocalScopedBitmap bitmap(bitmapHandle);
		bitmap->getSkBitmap(outBitmap);
		}

		PixelRef* toPixelRef(JNIEnv* env, jobject bitmap) {
		SkASSERT(env);
		SkASSERT(bitmap);
		SkASSERT(env->IsInstanceOf(bitmap, gBitmap_class));
		jlong bitmapHandle = env->GetLongField(bitmap, gBitmap_nativePtr);
		LocalScopedBitmap localBitmap(bitmapHandle);
		localBitmap->assertValid();
		return localBitmap->pixelRef();
		}

		} // namespace bitmap

		} // namespace android

		using namespace android;
		using namespace android::bitmap;

		///////////////////////////////////////////////////////////////////////////////
		// Conversions to/from SkColor, for get/setPixels, and the create method, which
		// is basically like setPixels
		@@ -649,8 +670,8 @@ static ToColorProc ChooseToColorProc(const SkBitmap& src) {
		///////////////////////////////////////////////////////////////////////////////

		static int getPremulBitmapCreateFlags(bool isMutable) {
		int flags = GraphicsJNI::kBitmapCreateFlag_Premultiplied;
		if (isMutable) flags \|= GraphicsJNI::kBitmapCreateFlag_Mutable;
		int flags = android::bitmap::kBitmapCreateFlag_Premultiplied;
		if (isMutable) flags \|= android::bitmap::kBitmapCreateFlag_Mutable;
		return flags;
		}

		@@ -674,7 +695,7 @@ static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors,
		SkBitmap bitmap;
		bitmap.setInfo(SkImageInfo::Make(width, height, colorType, kPremul_SkAlphaType));

		Bitmap* nativeBitmap = GraphicsJNI::allocateHeapPixelRef(&bitmap, NULL);
		PixelRef* nativeBitmap = GraphicsJNI::allocateHeapPixelRef(&bitmap, NULL);
		if (!nativeBitmap) {
		return NULL;
		}
		@@ -684,7 +705,7 @@ static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors,
		0, 0, width, height, bitmap);
		}

		return GraphicsJNI::createBitmap(env, nativeBitmap,
		return createBitmap(env, nativeBitmap,
		getPremulBitmapCreateFlags(isMutable));
		}

		@@ -699,29 +720,28 @@ static jobject Bitmap_copy(JNIEnv* env, jobject, jlong srcHandle,
		if (!src.copyTo(&result, dstCT, &allocator)) {
		return NULL;
		}
		Bitmap* bitmap = allocator.getStorageObjAndReset();
		return GraphicsJNI::createBitmap(env, bitmap,
		getPremulBitmapCreateFlags(isMutable));
		auto pixelRef = allocator.getStorageObjAndReset();
		return createBitmap(env, pixelRef, getPremulBitmapCreateFlags(isMutable));
		}

		static Bitmap* Bitmap_copyAshmemImpl(JNIEnv* env, SkBitmap& src, SkColorType& dstCT) {
		static PixelRef* Bitmap_copyAshmemImpl(JNIEnv* env, SkBitmap& src, SkColorType& dstCT) {
		SkBitmap result;

		AshmemPixelAllocator allocator(env);
		if (!src.copyTo(&result, dstCT, &allocator)) {
		return NULL;
		}
		Bitmap* bitmap = allocator.getStorageObjAndReset();
		bitmap->peekAtPixelRef()->setImmutable();
		return bitmap;
		auto pixelRef = allocator.getStorageObjAndReset();
		pixelRef->setImmutable();
		return pixelRef;
		}

		static jobject Bitmap_copyAshmem(JNIEnv* env, jobject, jlong srcHandle) {
		SkBitmap src;
		reinterpret_cast<Bitmap*>(srcHandle)->getSkBitmap(&src);
		SkColorType dstCT = src.colorType();
		Bitmap* bitmap = Bitmap_copyAshmemImpl(env, src, dstCT);
		jobject ret = GraphicsJNI::createBitmap(env, bitmap, getPremulBitmapCreateFlags(false));
		auto pixelRef = Bitmap_copyAshmemImpl(env, src, dstCT);
		jobject ret = createBitmap(env, pixelRef, getPremulBitmapCreateFlags(false));
		return ret;
		}

		@@ -729,13 +749,13 @@ static jobject Bitmap_copyAshmemConfig(JNIEnv* env, jobject, jlong srcHandle, ji
		SkBitmap src;
		reinterpret_cast<Bitmap*>(srcHandle)->getSkBitmap(&src);
		SkColorType dstCT = GraphicsJNI::legacyBitmapConfigToColorType(dstConfigHandle);
		Bitmap* bitmap = Bitmap_copyAshmemImpl(env, src, dstCT);
		jobject ret = GraphicsJNI::createBitmap(env, bitmap, getPremulBitmapCreateFlags(false));
		auto pixelRef = Bitmap_copyAshmemImpl(env, src, dstCT);
		jobject ret = createBitmap(env, pixelRef, getPremulBitmapCreateFlags(false));
		return ret;
		}

		static void Bitmap_destruct(Bitmap* bitmap) {
		bitmap->detachFromJava();
		delete bitmap;
		}

		static jlong Bitmap_getNativeFinalizer(JNIEnv*, jobject) {
		@@ -751,6 +771,7 @@ static jboolean Bitmap_recycle(JNIEnv* env, jobject, jlong bitmapHandle) {
		static void Bitmap_reconfigure(JNIEnv* env, jobject clazz, jlong bitmapHandle,
		jint width, jint height, jint configHandle, jboolean requestPremul) {
		LocalScopedBitmap bitmap(bitmapHandle);
		bitmap->assertValid();
		SkColorType colorType = GraphicsJNI::legacyBitmapConfigToColorType(configHandle);

		// ARGB_4444 is a deprecated format, convert automatically to 8888
		@@ -773,7 +794,7 @@ static void Bitmap_reconfigure(JNIEnv* env, jobject clazz, jlong bitmapHandle,
		// Otherwise respect the premultiplied request.
		alphaType = requestPremul ? kPremul_SkAlphaType : kUnpremul_SkAlphaType;
		}
		bitmap->reconfigure(SkImageInfo::Make(width, height, colorType, alphaType));
		bitmap->pixelRef()->reconfigure(SkImageInfo::Make(width, height, colorType, alphaType));
		}

		// These must match the int values in Bitmap.java
		@@ -843,7 +864,7 @@ static jint Bitmap_config(JNIEnv* env, jobject, jlong bitmapHandle) {

		static jint Bitmap_getGenerationId(JNIEnv* env, jobject, jlong bitmapHandle) {
		LocalScopedBitmap bitmap(bitmapHandle);
		return static_cast<jint>(bitmap->peekAtPixelRef()->getGenerationID());
		return static_cast<jint>(bitmap->getGenerationID());
		}

		static jboolean Bitmap_isPremultiplied(JNIEnv* env, jobject, jlong bitmapHandle) {
		@@ -955,7 +976,7 @@ static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {
		}

		// Map the bitmap in place from the ashmem region if possible otherwise copy.
		Bitmap* nativeBitmap;
		PixelRef* nativeBitmap;
		if (blob.fd() >= 0 && (blob.isMutable() \|\| !isMutable) && (size >= ASHMEM_BITMAP_MIN_SIZE)) {
		#if DEBUG_PARCEL
		ALOGD("Bitmap.createFromParcel: mapped contents of %s bitmap from %s blob "
		@@ -1018,7 +1039,7 @@ static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {
		blob.release();
		}

		return GraphicsJNI::createBitmap(env, nativeBitmap,
		return createBitmap(env, nativeBitmap,
		getPremulBitmapCreateFlags(isMutable), NULL, NULL, density);
		}

		@@ -1034,7 +1055,7 @@ static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,
		android::Parcel* p = android::parcelForJavaObject(env, parcel);
		SkBitmap bitmap;

		android::Bitmap* androidBitmap = reinterpret_cast<Bitmap*>(bitmapHandle);
		auto androidBitmap = reinterpret_cast<Bitmap*>(bitmapHandle);
		androidBitmap->getSkBitmap(&bitmap);

		p->writeInt32(isMutable);
		@@ -1061,7 +1082,7 @@ static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,

		// Transfer the underlying ashmem region if we have one and it's immutable.
		android::status_t status;
		int fd = androidBitmap->getAshmemFd();
		int fd = androidBitmap->pixelRef()->getAshmemFd();
		if (fd >= 0 && !isMutable && p->allowFds()) {
		#if DEBUG_PARCEL
		ALOGD("Bitmap.writeToParcel: transferring immutable bitmap's ashmem fd as "
		@@ -1131,7 +1152,7 @@ static jobject Bitmap_extractAlpha(JNIEnv* env, jobject clazz,
		env->ReleaseIntArrayElements(offsetXY, array, 0);
		}

		return GraphicsJNI::createBitmap(env, allocator.getStorageObjAndReset(),
		return createBitmap(env, allocator.getStorageObjAndReset(),
		getPremulBitmapCreateFlags(true));
		}

		@@ -1307,7 +1328,7 @@ static jboolean Bitmap_sameAs(JNIEnv* env, jobject, jlong bm0Handle,

		static jlong Bitmap_refPixelRef(JNIEnv* env, jobject, jlong bitmapHandle) {
		LocalScopedBitmap bitmap(bitmapHandle);
		SkPixelRef* pixelRef = bitmap.valid() ? bitmap->peekAtPixelRef() : nullptr;
		SkPixelRef* pixelRef = bitmap->pixelRef();
		SkSafeRef(pixelRef);
		return reinterpret_cast<jlong>(pixelRef);
		}
		@@ -1326,6 +1347,20 @@ static jint Bitmap_getAllocationByteCount(JNIEnv* env, jobject, jlong bitmapPtr)
		}

		///////////////////////////////////////////////////////////////////////////////
		static jclass make_globalref(JNIEnv* env, const char classname[])
		{
		jclass c = env->FindClass(classname);
		SkASSERT(c);
		return (jclass) env->NewGlobalRef(c);
		}

		static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz,
		const char fieldname[], const char type[])
		{
		jfieldID id = env->GetFieldID(clazz, fieldname, type);
		SkASSERT(id);
		return id;
		}

		static const JNINativeMethod gBitmapMethods[] = {
		{ "nativeCreate", "([IIIIIIZ)Landroid/graphics/Bitmap;",
		@@ -1374,6 +1409,11 @@ static const JNINativeMethod gBitmapMethods[] = {

		int register_android_graphics_Bitmap(JNIEnv* env)
		{
		gBitmap_class = make_globalref(env, "android/graphics/Bitmap");
		gBitmap_nativePtr = getFieldIDCheck(env, gBitmap_class, "mNativePtr", "J");
		gBitmap_constructorMethodID = env->GetMethodID(gBitmap_class, "<init>", "(JIIIZZ[BLandroid/graphics/NinePatch$InsetStruct;)V");
		gBitmap_reinitMethodID = env->GetMethodID(gBitmap_class, "reinit", "(IIZ)V");
		gBitmap_getAllocationByteCountMethodID = env->GetMethodID(gBitmap_class, "getAllocationByteCount", "()I");
		return android::RegisterMethodsOrDie(env, "android/graphics/Bitmap", gBitmapMethods,
		NELEM(gBitmapMethods));
		}
		No newline at end of file

core/jni/android/graphics/Bitmap.h

+53 −42

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core/jni/android/graphics/BitmapFactory.cpp

+12 −11

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core/jni/android/graphics/BitmapRegionDecoder.cpp

+6 −6

Original line number	Diff line number	Diff line
		@@ -148,14 +148,14 @@ static jobject nativeDecodeRegion(JNIEnv* env, jobject, jlong brdHandle, jint in
		}

		// Recycle a bitmap if possible.
		android::Bitmap* recycledBitmap = nullptr;
		android::PixelRef* recycledBitmap = nullptr;
		size_t recycledBytes = 0;
		if (javaBitmap) {
		recycledBitmap = GraphicsJNI::getBitmap(env, javaBitmap);
		if (recycledBitmap->peekAtPixelRef()->isImmutable()) {
		recycledBitmap = bitmap::toPixelRef(env, javaBitmap);
		if (recycledBitmap->isImmutable()) {
		ALOGW("Warning: Reusing an immutable bitmap as an image decoder target.");
		}
		recycledBytes = GraphicsJNI::getBitmapAllocationByteCount(env, javaBitmap);
		recycledBytes = bitmap::getBitmapAllocationByteCount(env, javaBitmap);
		}

		// Set up the pixel allocator
		@@ -198,9 +198,9 @@ static jobject nativeDecodeRegion(JNIEnv* env, jobject, jlong brdHandle, jint in

		int bitmapCreateFlags = 0;
		if (!requireUnpremul) {
		bitmapCreateFlags \|= GraphicsJNI::kBitmapCreateFlag_Premultiplied;
		bitmapCreateFlags \|= android::bitmap::kBitmapCreateFlag_Premultiplied;
		}
		return GraphicsJNI::createBitmap(env, heapAlloc.getStorageObjAndReset(), bitmapCreateFlags);
		return android::bitmap::createBitmap(env, heapAlloc.getStorageObjAndReset(), bitmapCreateFlags);
		}

		static jint nativeGetHeight(JNIEnv* env, jobject, jlong brdHandle) {

core/jni/android/graphics/Graphics.cpp

+19 −96

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