Add preliminary API for reporting display capabilities. (c5df37c2) · Commits · e / os / android_frameworks_base

core/java/android/view/Display.java

+48 −0

Original line number	Diff line number	Diff line
		@@ -78,6 +78,40 @@ public final class Display {
		*/
		public static final int DEFAULT_DISPLAY = 0;

		/**
		* Display flag: Indicates that the display supports secure video output.
		* <p>
		* This flag is used to indicate that the display supports content protection
		* mechanisms for secure video output at the display interface, such as HDCP.
		* These mechanisms may be used to protect secure content as it leaves the device.
		* </p><p>
		* While mirroring content to multiple displays, it can happen that certain
		* display devices support secure video output while other display devices do not.
		* The secure content will be shown only on the display devices that support
		* secure video output and will be blanked on other display devices that do
		* not support secure video output.
		* </p><p>
		* This flag mainly applies to external display devices such as HDMI or
		* Wifi display. Built-in display devices are usually considered secure.
		* </p>
		*
		* @hide pending review
		*/
		public static final int FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT = 1 << 0;

		/**
		* Display flag: Indicates that the display supports secure in-memory video buffers.
		* <p>
		* This flag is used to indicate that the display supports content protection
		* mechanisms for decrypted in-memory video buffers, such as secure memory areas.
		* These mechanisms may be used to protect secure video buffers in memory from
		* the video decoder to the display compositor and the video interface.
		* </p>
		*
		* @hide pending review
		*/
		public static final int FLAG_SUPPORTS_SECURE_VIDEO_BUFFERS = 1 << 1;

		/**
		* Internal method to create a display.
		* Applications should use {@link android.view.WindowManager#getDefaultDisplay()}
		@@ -157,6 +191,20 @@ public final class Display {
		return mLayerStack;
		}

		/**
		* Returns a combination of flags that describe the capabilities of the display.
		*
		* @return The display flags.
		*
		* @hide pending review
		*/
		public int getFlags() {
		synchronized (this) {
		updateDisplayInfoLocked();
		return mDisplayInfo.flags;
		}
		}

		/**
		* Gets the compatibility info used by this display instance.
		*

core/java/android/view/DisplayInfo.java

+20 −1

Original line number	Diff line number	Diff line
		@@ -33,6 +33,11 @@ public final class DisplayInfo implements Parcelable {
		*/
		public int layerStack;

		/**
		* Display flags.
		*/
		public int flags;

		/**
		* The human-readable name of the display.
		*/
		@@ -189,6 +194,7 @@ public final class DisplayInfo implements Parcelable {

		public void copyFrom(DisplayInfo other) {
		layerStack = other.layerStack;
		flags = other.flags;
		name = other.name;
		appWidth = other.appWidth;
		appHeight = other.appHeight;
		@@ -207,6 +213,7 @@ public final class DisplayInfo implements Parcelable {

		public void readFromParcel(Parcel source) {
		layerStack = source.readInt();
		flags = source.readInt();
		name = source.readString();
		appWidth = source.readInt();
		appHeight = source.readInt();
		@@ -226,6 +233,7 @@ public final class DisplayInfo implements Parcelable {
		@Override
		public void writeToParcel(Parcel dest, int flags) {
		dest.writeInt(layerStack);
		dest.writeInt(flags);
		dest.writeString(name);
		dest.writeInt(appWidth);
		dest.writeInt(appHeight);
		@@ -286,6 +294,17 @@ public final class DisplayInfo implements Parcelable {
		+ ", rotation " + rotation
		+ ", density " + logicalDensityDpi
		+ ", " + physicalXDpi + " x " + physicalYDpi + " dpi"
		+ ", layerStack " + layerStack + "}";
		+ ", layerStack " + layerStack + flagsToString(flags) + "}";
		}

		private static String flagsToString(int flags) {
		StringBuilder result = new StringBuilder();
		if ((flags & Display.FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT) != 0) {
		result.append(", FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT");
		}
		if ((flags & Display.FLAG_SUPPORTS_SECURE_VIDEO_BUFFERS) != 0) {
		result.append(", FLAG_SUPPORTS_SECURE_VIDEO_BUFFERS");
		}
		return result.toString();
		}
		}

services/java/com/android/server/display/DisplayDeviceInfo.java

+11 −8

Original line number	Diff line number	Diff line
		@@ -30,17 +30,17 @@ final class DisplayDeviceInfo {
		*/
		public static final int FLAG_DEFAULT_DISPLAY = 1 << 0;

		/**
		* Flag: Indicates that this display device can show secure surfaces.
		*/
		public static final int FLAG_SECURE = 1 << 1;

		/**
		* Flag: Indicates that this display device can rotate to show contents in a
		* different orientation. Otherwise the rotation is assumed to be fixed in the
		* natural orientation and the display manager should transform the content to fit.
		*/
		public static final int FLAG_SUPPORTS_ROTATION = 1 << 2;
		public static final int FLAG_SUPPORTS_ROTATION = 1 << 1;

		/**
		* Flag: Indicates that this display device can show secure surfaces.
		*/
		public static final int FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT = 1 << 2;

		/**
		* Touch attachment: Display does not receive touch.
		@@ -179,8 +179,11 @@ final class DisplayDeviceInfo {
		if ((flags & FLAG_DEFAULT_DISPLAY) != 0) {
		msg.append(", FLAG_DEFAULT_DISPLAY");
		}
		if ((flags & FLAG_SECURE) != 0) {
		msg.append(", FLAG_SECURE");
		if ((flags & FLAG_SUPPORTS_ROTATION) != 0) {
		msg.append(", FLAG_DEFAULT_DISPLAY");
		}
		if ((flags & FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT) != 0) {
		msg.append(", FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT");
		}
		return msg.toString();
		}

services/java/com/android/server/display/HeadlessDisplayAdapter.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -60,7 +60,7 @@ final class HeadlessDisplayAdapter extends DisplayAdapter {
		mInfo.xDpi = 160;
		mInfo.yDpi = 160;
		mInfo.flags = DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY
		\| DisplayDeviceInfo.FLAG_SECURE;
		\| DisplayDeviceInfo.FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT;
		mInfo.touch = DisplayDeviceInfo.TOUCH_NONE;
		}
		return mInfo;

services/java/com/android/server/display/LocalDisplayAdapter.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -124,7 +124,7 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		mInfo.name = getContext().getResources().getString(
		com.android.internal.R.string.display_manager_built_in_display_name);
		mInfo.flags = DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY
		\| DisplayDeviceInfo.FLAG_SECURE
		\| DisplayDeviceInfo.FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT
		\| DisplayDeviceInfo.FLAG_SUPPORTS_ROTATION;
		mInfo.densityDpi = (int)(mPhys.density * 160 + 0.5f);
		mInfo.xDpi = mPhys.xDpi;
		@@ -133,7 +133,7 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		} else {
		mInfo.name = getContext().getResources().getString(
		com.android.internal.R.string.display_manager_hdmi_display_name);
		mInfo.flags = DisplayDeviceInfo.FLAG_SECURE;
		mInfo.flags = DisplayDeviceInfo.FLAG_SUPPORTS_SECURE_VIDEO_OUTPUT;
		mInfo.touch = DisplayDeviceInfo.TOUCH_EXTERNAL;
		mInfo.setAssumedDensityForExternalDisplay(mPhys.width, mPhys.height);
		}