Merge "Create native Surface object on updateWindow for legacy apps." into oc-dev (e2aec03b) · Commits · e / os / android_frameworks_base

core/java/android/view/Surface.java

+38 −1

Original line number	Diff line number	Diff line
		@@ -52,7 +52,9 @@ public class Surface implements Parcelable {

		private static native long nativeCreateFromSurfaceTexture(SurfaceTexture surfaceTexture)
		throws OutOfResourcesException;

		private static native long nativeCreateFromSurfaceControl(long surfaceControlNativeObject);
		private static native long nativeGetFromSurfaceControl(long surfaceControlNativeObject);

		private static native long nativeLockCanvas(long nativeObject, Canvas canvas, Rect dirty)
		throws OutOfResourcesException;
		@@ -410,6 +412,9 @@ public class Surface implements Parcelable {
		* back from a client, converting it from the representation being managed
		* by the window manager to the representation the client uses to draw
		* in to it.
		*
		* @param other {@link SurfaceControl} to copy from.
		*
		* @hide
		*/
		public void copyFrom(SurfaceControl other) {
		@@ -420,7 +425,39 @@ public class Surface implements Parcelable {
		long surfaceControlPtr = other.mNativeObject;
		if (surfaceControlPtr == 0) {
		throw new NullPointerException(
		"SurfaceControl native object is null. Are you using a released SurfaceControl?");
		"null SurfaceControl native object. Are you using a released SurfaceControl?");
		}
		long newNativeObject = nativeGetFromSurfaceControl(surfaceControlPtr);

		synchronized (mLock) {
		if (mNativeObject != 0) {
		nativeRelease(mNativeObject);
		}
		setNativeObjectLocked(newNativeObject);
		}
		}

		/**
		* Gets a reference a surface created from this one. This surface now holds a reference
		* to the same data as the original surface, and is -not- the owner.
		* This is for use by the window manager when returning a window surface
		* back from a client, converting it from the representation being managed
		* by the window manager to the representation the client uses to draw
		* in to it.
		*
		* @param other {@link SurfaceControl} to create surface from.
		*
		* @hide
		*/
		public void createFrom(SurfaceControl other) {
		if (other == null) {
		throw new IllegalArgumentException("other must not be null");
		}

		long surfaceControlPtr = other.mNativeObject;
		if (surfaceControlPtr == 0) {
		throw new NullPointerException(
		"null SurfaceControl native object. Are you using a released SurfaceControl?");
		}
		long newNativeObject = nativeCreateFromSurfaceControl(surfaceControlPtr);

core/java/android/view/SurfaceView.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -641,6 +641,16 @@ public class SurfaceView extends View implements ViewRootImpl.WindowStoppedCallb
		mSurface.copyFrom(mSurfaceControl);
		}

		if (getContext().getApplicationInfo().targetSdkVersion
		< Build.VERSION_CODES.O) {
		// Some legacy applications use the underlying native {@link Surface} object
		// as a key to whether anything has changed. In these cases, updates to the
		// existing {@link Surface} will be ignored when the size changes.
		// Therefore, we must explicitly recreate the {@link Surface} in these
		// cases.
		mSurface.createFrom(mSurfaceControl);
		}

		if (visible && mSurface.isValid()) {
		if (!mSurfaceCreated && (surfaceChanged \|\| visibleChanged)) {
		mSurfaceCreated = true;

core/jni/android_view_Surface.cpp

+12 −0

Original line number	Diff line number	Diff line
		@@ -394,6 +394,16 @@ static void nativeAllocateBuffers(JNIEnv* /* env / , jclass / clazz */,

		static jlong nativeCreateFromSurfaceControl(JNIEnv* env, jclass clazz,
		jlong surfaceControlNativeObj) {
		sp<SurfaceControl> ctrl(reinterpret_cast<SurfaceControl *>(surfaceControlNativeObj));
		sp<Surface> surface(ctrl->createSurface());
		if (surface != NULL) {
		surface->incStrong(&sRefBaseOwner);
		}
		return reinterpret_cast<jlong>(surface.get());
		}

		static jlong nativeGetFromSurfaceControl(JNIEnv* env, jclass clazz,
		jlong surfaceControlNativeObj) {
		/*
		* This is used by the WindowManagerService just after constructing
		* a Surface and is necessary for returning the Surface reference to
		@@ -590,6 +600,8 @@ static const JNINativeMethod gSurfaceMethods[] = {
		(void*)nativeAllocateBuffers },
		{"nativeCreateFromSurfaceControl", "(J)J",
		(void*)nativeCreateFromSurfaceControl },
		{"nativeGetFromSurfaceControl", "(J)J",
		(void*)nativeGetFromSurfaceControl },
		{"nativeReadFromParcel", "(JLandroid/os/Parcel;)J",
		(void*)nativeReadFromParcel },
		{"nativeWriteToParcel", "(JLandroid/os/Parcel;)V",