Enable WCG support for ImageWallpaper (287d8283) · Commits · e / os / android_frameworks_base

core/java/android/app/WallpaperManager.java

+117 −25

Original line number	Diff line number	Diff line
		@@ -33,6 +33,7 @@ import android.content.Context;
		import android.content.Intent;
		import android.content.pm.PackageManager;
		import android.content.pm.ResolveInfo;
		import android.content.res.Configuration;
		import android.content.res.Resources;
		import android.content.res.Resources.NotFoundException;
		import android.graphics.Bitmap;
		@@ -40,6 +41,8 @@ import android.graphics.BitmapFactory;
		import android.graphics.BitmapRegionDecoder;
		import android.graphics.Canvas;
		import android.graphics.ColorFilter;
		import android.graphics.ColorSpace;
		import android.graphics.ImageDecoder;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.PixelFormat;
		@@ -63,11 +66,15 @@ import android.os.SystemProperties;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.Pair;
		import android.view.Display;
		import android.view.WindowManagerGlobal;

		import com.android.internal.R;

		import libcore.io.IoUtils;

		import java.io.BufferedInputStream;
		import java.io.ByteArrayOutputStream;
		import java.io.File;
		import java.io.FileInputStream;
		import java.io.FileOutputStream;
		@@ -76,7 +83,10 @@ import java.io.InputStream;
		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.HashSet;
		import java.util.List;
		import java.util.Set;
		import java.util.concurrent.CountDownLatch;
		import java.util.concurrent.TimeUnit;

		@@ -193,7 +203,13 @@ public class WallpaperManager {
		*/
		public static final int FLAG_LOCK = 1 << 1;

		private static final Object sSync = new Object[0];
		@UnsupportedAppUsage
		private static Globals sGlobals;

		private final Context mContext;
		private final boolean mWcgEnabled;
		private final ColorManagementProxy mCmProxy;

		/**
		* Special drawable that draws a wallpaper as fast as possible. Assumes
		@@ -388,13 +404,14 @@ public class WallpaperManager {
		}

		public Bitmap peekWallpaperBitmap(Context context, boolean returnDefault,
		@SetWallpaperFlags int which) {
		@SetWallpaperFlags int which, ColorManagementProxy cmProxy) {
		return peekWallpaperBitmap(context, returnDefault, which, context.getUserId(),
		false /* hardware */);
		false /* hardware */, cmProxy);
		}

		public Bitmap peekWallpaperBitmap(Context context, boolean returnDefault,
		@SetWallpaperFlags int which, int userId, boolean hardware) {
		@SetWallpaperFlags int which, int userId, boolean hardware,
		ColorManagementProxy cmProxy) {
		if (mService != null) {
		try {
		if (!mService.isWallpaperSupported(context.getOpPackageName())) {
		@@ -412,7 +429,8 @@ public class WallpaperManager {
		mCachedWallpaper = null;
		mCachedWallpaperUserId = 0;
		try {
		mCachedWallpaper = getCurrentWallpaperLocked(context, userId, hardware);
		mCachedWallpaper = getCurrentWallpaperLocked(
		context, userId, hardware, cmProxy);
		mCachedWallpaperUserId = userId;
		} catch (OutOfMemoryError e) {
		Log.w(TAG, "Out of memory loading the current wallpaper: " + e);
		@@ -450,7 +468,8 @@ public class WallpaperManager {
		}
		}

		private Bitmap getCurrentWallpaperLocked(Context context, int userId, boolean hardware) {
		private Bitmap getCurrentWallpaperLocked(Context context, int userId, boolean hardware,
		ColorManagementProxy cmProxy) {
		if (mService == null) {
		Log.w(TAG, "WallpaperService not running");
		return null;
		@@ -458,21 +477,29 @@ public class WallpaperManager {

		try {
		Bundle params = new Bundle();
		ParcelFileDescriptor fd = mService.getWallpaperWithFeature(
		ParcelFileDescriptor pfd = mService.getWallpaperWithFeature(
		context.getOpPackageName(), context.getFeatureId(), this, FLAG_SYSTEM,
		params, userId);
		if (fd != null) {
		try {
		BitmapFactory.Options options = new BitmapFactory.Options();
		if (hardware) {
		options.inPreferredConfig = Bitmap.Config.HARDWARE;
		}
		return BitmapFactory.decodeFileDescriptor(
		fd.getFileDescriptor(), null, options);
		} catch (OutOfMemoryError e) {

		if (pfd != null) {
		try (BufferedInputStream bis = new BufferedInputStream(
		new ParcelFileDescriptor.AutoCloseInputStream(pfd))) {
		final ByteArrayOutputStream baos = new ByteArrayOutputStream();
		int data;
		while ((data = bis.read()) != -1) {
		baos.write(data);
		}
		ImageDecoder.Source src = ImageDecoder.createSource(baos.toByteArray());
		return ImageDecoder.decodeBitmap(src, ((decoder, info, source) -> {
		// Mutable and hardware config can't be set at the same time.
		decoder.setMutableRequired(!hardware);
		// Let's do color management
		if (cmProxy != null) {
		cmProxy.doColorManagement(decoder, info);
		}
		}));
		} catch (OutOfMemoryError \| IOException e) {
		Log.w(TAG, "Can't decode file", e);
		} finally {
		IoUtils.closeQuietly(fd);
		}
		}
		} catch (RemoteException e) {
		@@ -497,10 +524,6 @@ public class WallpaperManager {
		}
		}

		private static final Object sSync = new Object[0];
		@UnsupportedAppUsage
		private static Globals sGlobals;

		static void initGlobals(IWallpaperManager service, Looper looper) {
		synchronized (sSync) {
		if (sGlobals == null) {
		@@ -514,6 +537,10 @@ public class WallpaperManager {
		if (service != null) {
		initGlobals(service, context.getMainLooper());
		}
		// Check if supports mixed color spaces composition in hardware.
		mWcgEnabled = context.getResources().getConfiguration().isScreenWideColorGamut()
		&& context.getResources().getBoolean(R.bool.config_enableWcgMode);
		mCmProxy = new ColorManagementProxy(context);
		}

		/**
		@@ -530,6 +557,22 @@ public class WallpaperManager {
		return sGlobals.mService;
		}

		/**
		* Indicate whether wcg (Wide Color Gamut) should be enabled.
		* <p>
		* Some devices lack of capability of mixed color spaces composition,
		* enable wcg on such devices might cause memory or battery concern.
		* <p>
		* Therefore, in addition to {@link Configuration#isScreenWideColorGamut()},
		* we also take mixed color spaces composition (config_enableWcgMode) into account.
		*
		* @see Configuration#isScreenWideColorGamut()
		* @return True if wcg should be enabled for this device.
		*/
		private boolean shouldEnableWideColorGamut() {
		return mWcgEnabled;
		}

		/**
		* Retrieve the current system wallpaper; if
		* no wallpaper is set, the system built-in static wallpaper is returned.
		@@ -546,7 +589,7 @@ public class WallpaperManager {
		* is not able to access the wallpaper.
		*/
		public Drawable getDrawable() {
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, true, FLAG_SYSTEM);
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, true, FLAG_SYSTEM, mCmProxy);
		if (bm != null) {
		Drawable dr = new BitmapDrawable(mContext.getResources(), bm);
		dr.setDither(false);
		@@ -777,7 +820,7 @@ public class WallpaperManager {
		* null pointer if these is none.
		*/
		public Drawable peekDrawable() {
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, false, FLAG_SYSTEM);
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, false, FLAG_SYSTEM, mCmProxy);
		if (bm != null) {
		Drawable dr = new BitmapDrawable(mContext.getResources(), bm);
		dr.setDither(false);
		@@ -801,7 +844,7 @@ public class WallpaperManager {
		*/
		@RequiresPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE)
		public Drawable getFastDrawable() {
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, true, FLAG_SYSTEM);
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, true, FLAG_SYSTEM, mCmProxy);
		if (bm != null) {
		return new FastBitmapDrawable(bm);
		}
		@@ -817,13 +860,34 @@ public class WallpaperManager {
		*/
		@RequiresPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE)
		public Drawable peekFastDrawable() {
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, false, FLAG_SYSTEM);
		Bitmap bm = sGlobals.peekWallpaperBitmap(mContext, false, FLAG_SYSTEM, mCmProxy);
		if (bm != null) {
		return new FastBitmapDrawable(bm);
		}
		return null;
		}

		/**
		* Whether the wallpaper supports Wide Color Gamut or not.
		* @param which The wallpaper whose image file is to be retrieved. Must be a single
		* defined kind of wallpaper, either {@link #FLAG_SYSTEM} or {@link #FLAG_LOCK}.
		* @return true when supported.
		*
		* @see #FLAG_LOCK
		* @see #FLAG_SYSTEM
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE)
		public boolean wallpaperSupportsWcg(int which) {
		if (!shouldEnableWideColorGamut()) {
		return false;
		}
		Bitmap bitmap = sGlobals.peekWallpaperBitmap(mContext, false, which, mCmProxy);
		return bitmap != null && bitmap.getColorSpace() != null
		&& bitmap.getColorSpace() != ColorSpace.get(ColorSpace.Named.SRGB)
		&& mCmProxy.isSupportedColorSpace(bitmap.getColorSpace());
		}

		/**
		* Like {@link #getDrawable()} but returns a Bitmap with default {@link Bitmap.Config}.
		*
		@@ -852,7 +916,8 @@ public class WallpaperManager {
		* @hide
		*/
		public Bitmap getBitmapAsUser(int userId, boolean hardware) {
		return sGlobals.peekWallpaperBitmap(mContext, true, FLAG_SYSTEM, userId, hardware);
		return sGlobals.peekWallpaperBitmap(
		mContext, true, FLAG_SYSTEM, userId, hardware, mCmProxy);
		}

		/**
		@@ -1975,6 +2040,33 @@ public class WallpaperManager {
		return false;
		}

		/**
		* A private class to help Globals#getCurrentWallpaperLocked handle color management.
		*/
		private static class ColorManagementProxy {
		private final Set<ColorSpace> mSupportedColorSpaces = new HashSet<>();

		ColorManagementProxy(Context context) {
		// Get a list of supported wide gamut color spaces.
		Display display = context.getDisplay();
		if (display != null) {
		mSupportedColorSpaces.addAll(Arrays.asList(display.getSupportedWideColorGamut()));
		}
		}

		boolean isSupportedColorSpace(ColorSpace colorSpace) {
		return colorSpace != null && (colorSpace == ColorSpace.get(ColorSpace.Named.SRGB)
		\|\| mSupportedColorSpaces.contains(colorSpace));
		}

		void doColorManagement(ImageDecoder decoder, ImageDecoder.ImageInfo info) {
		if (!isSupportedColorSpace(info.getColorSpace())) {
		decoder.setTargetColorSpace(ColorSpace.get(ColorSpace.Named.SRGB));
		Log.w(TAG, "Not supported color space: " + info.getColorSpace());
		}
		}
		}

		// Private completion callback for setWallpaper() synchronization
		private class WallpaperSetCompletion extends IWallpaperManagerCallback.Stub {
		final CountDownLatch mLatch;

core/java/android/view/Display.java

+50 −0

Original line number	Diff line number	Diff line
		@@ -43,7 +43,9 @@ import android.util.Log;

		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.List;

		/**
		* Provides information about the size and density of a logical display.
		@@ -382,6 +384,23 @@ public final class Display {
		/** @hide */
		public static final int COLOR_MODE_DISPLAY_P3 = 9;

		/ @hide /
		@IntDef(prefix = {"COLOR_MODE_"}, value = {
		COLOR_MODE_INVALID,
		COLOR_MODE_DEFAULT,
		COLOR_MODE_BT601_625,
		COLOR_MODE_BT601_625_UNADJUSTED,
		COLOR_MODE_BT601_525,
		COLOR_MODE_BT601_525_UNADJUSTED,
		COLOR_MODE_BT709,
		COLOR_MODE_DCI_P3,
		COLOR_MODE_SRGB,
		COLOR_MODE_ADOBE_RGB,
		COLOR_MODE_DISPLAY_P3
		})
		@Retention(RetentionPolicy.SOURCE)
		public @interface ColorMode {}

		/**
		* Indicates that when display is removed, all its activities will be moved to the primary
		* display and the topmost activity should become focused.
		@@ -959,6 +978,37 @@ public final class Display {
		}
		}

		/**
		* Gets the supported wide color gamuts of this device.
		*
		* @return Supported WCG color spaces.
		* @hide
		*/
		public @ColorMode ColorSpace[] getSupportedWideColorGamut() {
		synchronized (this) {
		final ColorSpace[] defaultColorSpaces = new ColorSpace[0];
		updateDisplayInfoLocked();
		if (!isWideColorGamut()) {
		return defaultColorSpaces;
		}

		final int[] colorModes = getSupportedColorModes();
		final List<ColorSpace> colorSpaces = new ArrayList<>();
		for (int colorMode : colorModes) {
		// Refer to DisplayInfo#isWideColorGamut.
		switch (colorMode) {
		case COLOR_MODE_DCI_P3:
		colorSpaces.add(ColorSpace.get(ColorSpace.Named.DCI_P3));
		break;
		case COLOR_MODE_DISPLAY_P3:
		colorSpaces.add(ColorSpace.get(ColorSpace.Named.DISPLAY_P3));
		break;
		}
		}
		return colorSpaces.toArray(defaultColorSpaces);
		}
		}

		/**
		* Gets the app VSYNC offset, in nanoseconds. This is a positive value indicating
		* the phase offset of the VSYNC events provided by Choreographer relative to the

core/res/res/values/config.xml

+4 −0

Original line number	Diff line number	Diff line
		@@ -4248,6 +4248,10 @@
		<!-- Add packages here -->
		</string-array>

		<!-- Whether or not wcg (wide color gamut) should be enabled on this device,
		we only enabled it while the device has ability of mixed color spaces composition -->
		<bool name="config_enableWcgMode">false</bool>

		<!-- When true, enables the whitelisted app to handle bug reports from power menu short press. -->
		<bool name="config_bugReportHandlerEnabled">false</bool>

core/res/res/values/symbols.xml

+3 −0

Original line number	Diff line number	Diff line
		@@ -3786,6 +3786,9 @@

		<java-symbol type="string" name="accessibility_freeform_caption" />

		<!-- For Wide Color Gamut -->
		<java-symbol type="bool" name="config_enableWcgMode" />

		<!-- For contacts provider. -->
		<java-symbol type="string" name="config_rawContactsLocalAccountName" />
		<java-symbol type="string" name="config_rawContactsLocalAccountType" />

packages/SystemUI/src/com/android/systemui/ImageWallpaper.java

+9 −5

Original line number	Diff line number	Diff line
		@@ -108,12 +108,13 @@ public class ImageWallpaper extends WallpaperService {
		if (mController != null) {
		mController.addCallback(this /* StateListener */);
		}
		mEglHelper = new EglHelper();
		mRenderer = new ImageWallpaperRenderer(context, this /* SurfaceProxy */);
		}

		@Override
		public void onCreate(SurfaceHolder surfaceHolder) {
		mEglHelper = new EglHelper();
		// Deferred init renderer because we need to get wallpaper by display context.
		mRenderer = new ImageWallpaperRenderer(getDisplayContext(), this /* SurfaceProxy */);
		setFixedSizeAllowed(true);
		setOffsetNotificationsEnabled(true);
		updateSurfaceSize();
		@@ -177,14 +178,13 @@ public class ImageWallpaper extends WallpaperService {
		mRenderer = null;
		mEglHelper.finish();
		mEglHelper = null;
		getSurfaceHolder().getSurface().hwuiDestroy();
		});
		}

		@Override
		public void onSurfaceCreated(SurfaceHolder holder) {
		mWorker.getThreadHandler().post(() -> {
		mEglHelper.init(holder);
		mEglHelper.init(holder, needSupportWideColorGamut());
		mRenderer.onSurfaceCreated();
		});
		}
		@@ -257,7 +257,7 @@ public class ImageWallpaper extends WallpaperService {

		// Check if we need to recreate egl surface.
		if (mEglHelper.hasEglContext() && !mEglHelper.hasEglSurface()) {
		if (!mEglHelper.createEglSurface(getSurfaceHolder())) {
		if (!mEglHelper.createEglSurface(getSurfaceHolder(), needSupportWideColorGamut())) {
		Log.w(TAG, "recreate egl surface failed!");
		}
		}
		@@ -340,6 +340,10 @@ public class ImageWallpaper extends WallpaperService {
		&& mController.getState() == StatusBarState.KEYGUARD;
		}

		private boolean needSupportWideColorGamut() {
		return mRenderer.isWcgContent();
		}

		@Override
		protected void dump(String prefix, FileDescriptor fd, PrintWriter out, String[] args) {
		super.dump(prefix, fd, out, args);