Add Display.Mode.getAlternativeRefreshRates() (1df8bde2) · Commits · e / os / android_frameworks_base

api/current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -52665,6 +52665,7 @@ package android.view {

		public static final class Display.Mode implements android.os.Parcelable {
		method public int describeContents();
		method @NonNull public float[] getAlternativeRefreshRates();
		method public int getModeId();
		method public int getPhysicalHeight();
		method public int getPhysicalWidth();

core/api/current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -50772,6 +50772,7 @@ package android.view {

		public static final class Display.Mode implements android.os.Parcelable {
		method public int describeContents();
		method @NonNull public float[] getAlternativeRefreshRates();
		method public int getModeId();
		method public int getPhysicalHeight();
		method public int getPhysicalWidth();

core/java/android/view/Display.java

+42 −2

Original line number	Diff line number	Diff line
		@@ -1405,16 +1405,29 @@ public final class Display {
		private final int mWidth;
		private final int mHeight;
		private final float mRefreshRate;
		@NonNull
		private final float[] mAlternativeRefreshRates;

		/**
		* @hide
		*/
		@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
		public Mode(int modeId, int width, int height, float refreshRate) {
		this(modeId, width, height, refreshRate, new float[0]);
		}

		/**
		* @hide
		*/
		public Mode(int modeId, int width, int height, float refreshRate,
		float[] alternativeRefreshRates) {
		mModeId = modeId;
		mWidth = width;
		mHeight = height;
		mRefreshRate = refreshRate;
		mAlternativeRefreshRates =
		Arrays.copyOf(alternativeRefreshRates, alternativeRefreshRates.length);
		Arrays.sort(mAlternativeRefreshRates);
		}

		/**
		@@ -1463,6 +1476,28 @@ public final class Display {
		return mRefreshRate;
		}

		/**
		* Returns an array of refresh rates which can be switched to seamlessly.
		* <p>
		* A seamless switch is one without visual interruptions, such as a black screen for
		* a second or two.
		* <p>
		* Presence in this list does not guarantee a switch will occur to the desired
		* refresh rate, but rather, if a switch does occur to a refresh rate in this list,
		* it is guaranteed to be seamless.
		* <p>
		* The binary relation "refresh rate X is alternative to Y" is non-reflexive,
		* symmetric and transitive. For example the mode 1920x1080 60Hz, will never have an
		* alternative refresh rate of 60Hz. If 1920x1080 60Hz has an alternative of 50Hz
		* then 1920x1080 50Hz will have alternative refresh rate of 60Hz. If 1920x1080 60Hz
		* has an alternative of 50Hz and 1920x1080 50Hz has an alternative of 24Hz, then 1920x1080
		* 60Hz will also have an alternative of 24Hz.
		*/
		@NonNull
		public float[] getAlternativeRefreshRates() {
		return mAlternativeRefreshRates;
		}

		/**
		* Returns {@code true} if this mode matches the given parameters.
		*
		@@ -1483,7 +1518,8 @@ public final class Display {
		return false;
		}
		Mode that = (Mode) other;
		return mModeId == that.mModeId && matches(that.mWidth, that.mHeight, that.mRefreshRate);
		return mModeId == that.mModeId && matches(that.mWidth, that.mHeight, that.mRefreshRate)
		&& Arrays.equals(mAlternativeRefreshRates, that.mAlternativeRefreshRates);
		}

		@Override
		@@ -1493,6 +1529,7 @@ public final class Display {
		hash = hash * 17 + mWidth;
		hash = hash * 17 + mHeight;
		hash = hash * 17 + Float.floatToIntBits(mRefreshRate);
		hash = hash * 17 + Arrays.hashCode(mAlternativeRefreshRates);
		return hash;
		}

		@@ -1503,6 +1540,8 @@ public final class Display {
		.append(", width=").append(mWidth)
		.append(", height=").append(mHeight)
		.append(", fps=").append(mRefreshRate)
		.append(", alternativeRefreshRates=")
		.append(Arrays.toString(mAlternativeRefreshRates))
		.append("}")
		.toString();
		}
		@@ -1513,7 +1552,7 @@ public final class Display {
		}

		private Mode(Parcel in) {
		this(in.readInt(), in.readInt(), in.readInt(), in.readFloat());
		this(in.readInt(), in.readInt(), in.readInt(), in.readFloat(), in.createFloatArray());
		}

		@Override
		@@ -1522,6 +1561,7 @@ public final class Display {
		out.writeInt(mWidth);
		out.writeInt(mHeight);
		out.writeFloat(mRefreshRate);
		out.writeFloatArray(mAlternativeRefreshRates);
		}

		@SuppressWarnings("hiding")

services/core/java/com/android/server/display/DisplayAdapter.java

+7 −2

Original line number	Diff line number	Diff line
		@@ -120,8 +120,13 @@ abstract class DisplayAdapter {
		}

		public static Display.Mode createMode(int width, int height, float refreshRate) {
		return new Display.Mode(
		NEXT_DISPLAY_MODE_ID.getAndIncrement(), width, height, refreshRate);
		return createMode(width, height, refreshRate, new float[0]);
		}

		public static Display.Mode createMode(int width, int height, float refreshRate,
		float[] alternativeRefreshRates) {
		return new Display.Mode(NEXT_DISPLAY_MODE_ID.getAndIncrement(), width, height, refreshRate,
		alternativeRefreshRates);
		}

		public interface Listener {

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

+44 −8

Original line number	Diff line number	Diff line
		@@ -266,12 +266,27 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		boolean modesAdded = false;
		for (int i = 0; i < configs.length; i++) {
		SurfaceControl.DisplayConfig config = configs[i];
		List<Float> alternativeRefreshRates = new ArrayList<>();
		for (int j = 0; j < configs.length; j++) {
		SurfaceControl.DisplayConfig other = configs[j];
		boolean isAlternative = j != i && other.width == config.width
		&& other.height == config.height
		&& other.refreshRate != config.refreshRate
		&& other.configGroup == config.configGroup;
		if (isAlternative) {
		alternativeRefreshRates.add(configs[j].refreshRate);
		}
		}
		Collections.sort(alternativeRefreshRates);

		// First, check to see if we've already added a matching mode. Since not all
		// configuration options are exposed via Display.Mode, it's possible that we have
		// multiple DisplayConfigs that would generate the same Display.Mode.
		boolean existingMode = false;
		for (int j = 0; j < records.size(); j++) {
		if (records.get(j).hasMatchingMode(config)) {
		for (DisplayModeRecord record : records) {
		if (record.hasMatchingMode(config)
		&& refreshRatesEquals(alternativeRefreshRates,
		record.mMode.getAlternativeRefreshRates())) {
		existingMode = true;
		break;
		}
		@@ -282,9 +297,13 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		// If we haven't already added a mode for this configuration to the new set of
		// supported modes then check to see if we have one in the prior set of supported
		// modes to reuse.
		DisplayModeRecord record = findDisplayModeRecord(config);
		DisplayModeRecord record = findDisplayModeRecord(config, alternativeRefreshRates);
		if (record == null) {
		record = new DisplayModeRecord(config);
		float[] alternativeRates = new float[alternativeRefreshRates.size()];
		for (int j = 0; j < alternativeRates.length; j++) {
		alternativeRates[j] = alternativeRefreshRates.get(j);
		}
		record = new DisplayModeRecord(config, alternativeRates);
		modesAdded = true;
		}
		records.add(record);
		@@ -495,16 +514,31 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		return true;
		}

		private DisplayModeRecord findDisplayModeRecord(SurfaceControl.DisplayConfig config) {
		private DisplayModeRecord findDisplayModeRecord(SurfaceControl.DisplayConfig config,
		List<Float> alternativeRefreshRates) {
		for (int i = 0; i < mSupportedModes.size(); i++) {
		DisplayModeRecord record = mSupportedModes.valueAt(i);
		if (record.hasMatchingMode(config)) {
		if (record.hasMatchingMode(config)
		&& refreshRatesEquals(alternativeRefreshRates,
		record.mMode.getAlternativeRefreshRates())) {
		return record;
		}
		}
		return null;
		}

		private boolean refreshRatesEquals(List<Float> list, float[] array) {
		if (list.size() != array.length) {
		return false;
		}
		for (int i = 0; i < list.size(); i++) {
		if (Float.floatToIntBits(list.get(i)) != Float.floatToIntBits(array[i])) {
		return false;
		}
		}
		return true;
		}

		@Override
		public void applyPendingDisplayDeviceInfoChangesLocked() {
		if (mHavePendingChanges) {
		@@ -1032,8 +1066,10 @@ final class LocalDisplayAdapter extends DisplayAdapter {
		private static final class DisplayModeRecord {
		public final Display.Mode mMode;

		DisplayModeRecord(SurfaceControl.DisplayConfig config) {
		mMode = createMode(config.width, config.height, config.refreshRate);
		DisplayModeRecord(SurfaceControl.DisplayConfig config,
		float[] alternativeRefreshRates) {
		mMode = createMode(config.width, config.height, config.refreshRate,
		alternativeRefreshRates);
		}

		/**