Add new API to check whether a Bitmap was modified. (0bbae083) · Commits · e / os / android_frameworks_base

core/jni/android/graphics/Bitmap.cpp

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -313,6 +313,10 @@ static int Bitmap_config(JNIEnv* env, jobject, SkBitmap* bitmap) {
	return bitmap->config();		return bitmap->config();
	}		}

			static int Bitmap_getGenerationId(JNIEnv* env, jobject, SkBitmap* bitmap) {
			return bitmap->getGenerationID();
			}

	static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) {		static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) {
	return !bitmap->isOpaque();		return !bitmap->isOpaque();
	}		}
	@@ -606,6 +610,7 @@ static JNINativeMethod gBitmapMethods[] = {
	(void*)Bitmap_writeToParcel },		(void*)Bitmap_writeToParcel },
	{ "nativeExtractAlpha", "(II[I)Landroid/graphics/Bitmap;",		{ "nativeExtractAlpha", "(II[I)Landroid/graphics/Bitmap;",
	(void*)Bitmap_extractAlpha },		(void*)Bitmap_extractAlpha },
			{ "nativeGenerationId", "(I)I", (void*)Bitmap_getGenerationId },
	{ "nativeGetPixel", "(III)I", (void*)Bitmap_getPixel },		{ "nativeGetPixel", "(III)I", (void*)Bitmap_getPixel },
	{ "nativeGetPixels", "(I[IIIIIII)V", (void*)Bitmap_getPixels },		{ "nativeGetPixels", "(I[IIIIIII)V", (void*)Bitmap_getPixels },
	{ "nativeSetPixel", "(IIII)V", (void*)Bitmap_setPixel },		{ "nativeSetPixel", "(IIII)V", (void*)Bitmap_setPixel },

graphics/java/android/graphics/Bitmap.java

+14 −0

Original line number	Original line	Diff line number	Diff line
	@@ -171,6 +171,19 @@ public final class Bitmap implements Parcelable {
	return mRecycled;		return mRecycled;
	}		}

			/**
			* Returns the generation ID of this bitmap. The generation ID changes
			* whenever the bitmap is modified. This can be used as an efficient way to
			* check if a bitmap has changed.
			*
			* @return The current generation ID for this bitmap.
			*
			* @hide
			*/
			public int getGenerationId() {
			return nativeGenerationId(mNativeBitmap);
			}

	/**		/**
	* This is called by methods that want to throw an exception if the bitmap		* This is called by methods that want to throw an exception if the bitmap
	* has already been recycled.		* has already been recycled.
	@@ -1041,6 +1054,7 @@ public final class Bitmap implements Parcelable {
	private static native void nativeCopyPixelsToBuffer(int nativeBitmap,		private static native void nativeCopyPixelsToBuffer(int nativeBitmap,
	Buffer dst);		Buffer dst);
	private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src);		private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src);
			private static native int nativeGenerationId(int nativeBitmap);

	private static native Bitmap nativeCreateFromParcel(Parcel p);		private static native Bitmap nativeCreateFromParcel(Parcel p);
	// returns true on success		// returns true on success

tests/HwAccelerationTest/Android.mk

0 → 100644

+26 −0

Original line number	Original line	Diff line number	Diff line
			#
			# Copyright (C) 2010 The Android Open Source 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.
			#

			LOCAL_PATH:= $(call my-dir)
			include $(CLEAR_VARS)

			LOCAL_SRC_FILES := $(call all-subdir-java-files)

			LOCAL_PACKAGE_NAME := HwAccelerationTest

			LOCAL_MODULE_TAGS := tests

			include $(BUILD_PACKAGE)

tests/HwAccelerationTest/AndroidManifest.xml

0 → 100644

+30 −0

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			<?xml version="1.0" encoding="utf-8"?>
			<!-- Copyright (C) 2010 The Android Open Source 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.
			-->

			<manifest xmlns:android="http://schemas.android.com/apk/res/android"
			package="com.google.android.test.hwui">

			<application android:label="HwUi">

			<activity android:name="HwUiActivity">
			<intent-filter>
			<action android:name="android.intent.action.MAIN" />
			<category android:name="android.intent.category.LAUNCHER" />
			</intent-filter>
			</activity>

			</application>
			</manifest>

tests/HwAccelerationTest/src/com/google/android/test/hwui/HwUiActivity.java

0 → 100644

+81 −0

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			/*
			* Copyright (C) 2010 The Android Open Source 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 com.google.android.test.hwui;

			import android.app.Activity;
			import android.content.Context;
			import android.graphics.Bitmap;
			import android.graphics.Canvas;
			import android.graphics.Paint;
			import android.os.Bundle;
			import android.view.View;

			import static android.util.Log.d;

			public class HwUiActivity extends Activity {
			private static final String LOG_TAG = "HwUi";

			@Override
			protected void onCreate(Bundle savedInstanceState) {
			super.onCreate(savedInstanceState);

			setContentView(new DirtyBitmapView(this));
			}

			static int dipToPx(Context c, int dip) {
			return (int) (c.getResources().getDisplayMetrics().density * dip + 0.5f);
			}

			static class DirtyBitmapView extends View {
			private Bitmap mCache;

			DirtyBitmapView(Context c) {
			super(c);

			final int width = dipToPx(c, 100);
			final int height = dipToPx(c, 100);

			mCache = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
			logGenerationId("Dirty cache created", mCache);

			Canvas canvas = new Canvas(mCache);
			logGenerationId("Canvas cache created", mCache);

			canvas.drawColor(0xffff0000);
			logGenerationId("Cache filled", mCache);

			Paint p = new Paint();
			p.setColor(0xff0000ff);

			canvas.drawRect(width / 2.0f, height / 2.0f, width, height, p);
			logGenerationId("Cache modified", mCache);
			}

			private static void logGenerationId(String message, Bitmap b) {
			d(LOG_TAG, message);
			d(LOG_TAG, " bitmap id=" + b.getGenerationId());
			}

			@Override
			protected void onDraw(Canvas canvas) {
			super.onDraw(canvas);

			canvas.drawBitmap(mCache, 0, 0, null);
			logGenerationId("Cache drawn", mCache);
			}
			}
			}