Added JNI and Java code to capture a layer (1cda84c6) · Commits · e / os / android_frameworks_base

core/java/android/view/SurfaceControl.java

+16 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,8 @@ public class SurfaceControl {
		private static native void nativeScreenshot(IBinder displayToken, Surface consumer,
		Rect sourceCrop, int width, int height, int minLayer, int maxLayer,
		boolean allLayers, boolean useIdentityTransform);
		private static native void nativeCaptureLayers(IBinder layerHandleToken, Surface consumer,
		int rotation);

		private static native long nativeCreateTransaction();
		private static native long nativeGetNativeTransactionFinalizer();
		@@ -970,6 +972,20 @@ public class SurfaceControl {
		minLayer, maxLayer, allLayers, useIdentityTransform);
		}

		/**
		* Captures a layer and its children into the provided {@link Surface}.
		*
		* @param layerHandleToken The root layer to capture.
		* @param consumer The {@link Surface} to capture the layer into.
		* @param rotation Apply a custom clockwise rotation to the screenshot, i.e.
		* Surface.ROTATION_0,90,180,270. Surfaceflinger will always capture in its
		* native portrait orientation by default, so this is useful for returning
		* captures that are independent of device orientation.
		*/
		public static void captureLayers(IBinder layerHandleToken, Surface consumer, int rotation) {
		nativeCaptureLayers(layerHandleToken, consumer, rotation);
		}

		public static class Transaction implements Closeable {
		public static final NativeAllocationRegistry sRegistry = new NativeAllocationRegistry(
		Transaction.class.getClassLoader(),

+18 −0

Original line number	Diff line number	Diff line
		@@ -290,6 +290,22 @@ static void nativeScreenshot(JNIEnv* env, jclass clazz, jobject displayTokenObj,
		}
		}

		static void nativeCaptureLayers(JNIEnv* env, jclass clazz, jobject layerHandleToken,
		jobject surfaceObj, int rotation) {

		sp<IBinder> layerHandle = ibinderForJavaObject(env, layerHandleToken);
		if (layerHandle == NULL) {
		return;
		}

		sp<Surface> consumer = android_view_Surface_getSurface(env, surfaceObj);
		if (consumer == NULL) {
		return;
		}

		ScreenshotClient::captureLayers(layerHandle, consumer->getIGraphicBufferProducer(), rotation);
		}

		static void nativeApplyTransaction(JNIEnv* env, jclass clazz, jlong transactionObj, jboolean sync) {
		auto transaction = reinterpret_cast<SurfaceComposerClient::Transaction*>(transactionObj);
		transaction->apply(sync);
		@@ -949,6 +965,8 @@ static const JNINativeMethod sSurfaceControlMethods[] = {
		{"nativeScreenshotToBuffer",
		"(Landroid/os/IBinder;Landroid/graphics/Rect;IIIIZZI)Landroid/graphics/GraphicBuffer;",
		(void*)nativeScreenshotToBuffer },
		{"nativeCaptureLayers", "(Landroid/os/IBinder;Landroid/view/Surface;I)V",
		(void*)nativeCaptureLayers },
		};

		int register_android_view_SurfaceControl(JNIEnv* env)