Add background scan routines and callbacks to broadcast radio API. (e597ce15) · Commits · e / os / android_frameworks_base

core/java/android/hardware/radio/RadioManager.java

+13 −0

Original line number	Diff line number	Diff line
		@@ -196,6 +196,19 @@ public class RadioManager {
		return mIsCaptureSupported;
		}

		/**
		* {@code true} if the module supports background scanning. At the given time it may not
		* be available though, see {@link RadioTuner#startBackgroundScan()}.
		*
		* @return {@code true} if background scanning is supported (not necessary available
		* at a given time), {@code false} otherwise.
		*
		* @hide FutureFeature
		*/
		public boolean isBackgroundScanningSupported() {
		return false;
		}

		/** List of descriptors for all bands supported by this module.
		* @return an array of {@link BandDescriptor}.
		*/

core/java/android/hardware/radio/RadioModule.java

+2 −0

Original line number	Diff line number	Diff line
		@@ -79,6 +79,8 @@ public class RadioModule extends RadioTuner {

		public native int getProgramInformation(RadioManager.ProgramInfo[] info);

		public native boolean startBackgroundScan();

		public native @NonNull List<RadioManager.ProgramInfo> getProgramList(@Nullable String filter);

		public native boolean isAntennaConnected();

core/java/android/hardware/radio/RadioTuner.java

+45 −1

Original line number	Diff line number	Diff line
		@@ -211,6 +211,23 @@ public abstract class RadioTuner {
		*/
		public abstract int getProgramInformation(RadioManager.ProgramInfo[] info);

		/**
		* Initiates a background scan to update internally cached program list.
		*
		* It may not be necessary to initiate the scan explicitly - the scan MAY be performed on boot.
		*
		* The operation is asynchronous and {@link Callback} backgroundScanComplete or onError will
		* be called if the return value of this call was {@code true}. As result of this call
		* programListChanged may be triggered (if the scanned list differs).
		*
		* @return {@code true} if the scan was properly scheduled, {@code false} if the scan feature
		* is unavailable; ie. temporarily due to ongoing foreground playback in single-tuner device
		* or permanently if the feature is not supported
		* (see ModuleProperties#isBackgroundScanningSupported()).
		* @hide FutureFeature
		*/
		public abstract boolean startBackgroundScan();

		/**
		* Get the list of discovered radio stations.
		*
		@@ -219,7 +236,8 @@ public abstract class RadioTuner {
		*
		* @param filter vendor-specific selector for radio stations.
		* @return a list of radio stations.
		* @throws IllegalStateException if the scan is in progress or has not been started.
		* @throws IllegalStateException if the scan is in progress or has not been started,
		* startBackgroundScan() call may fix it.
		* @throws IllegalArgumentException if the filter argument is not valid.
		* @hide FutureFeature
		*/
		@@ -317,6 +335,32 @@ public abstract class RadioTuner {
		* with control set to {@code true}.
		*/
		public void onControlChanged(boolean control) {}

		/**
		* onBackgroundScanAvailabilityChange() is called when background scan
		* feature becomes available or not.
		*
		* @param isAvailable true, if the tuner turned temporarily background-
		* capable, false in the other case.
		* @hide FutureFeature
		*/
		public void onBackgroundScanAvailabilityChange(boolean isAvailable) {}

		/**
		* Called when a background scan completes successfully.
		*
		* @hide FutureFeature
		*/
		public void onBackgroundScanComplete() {}

		/**
		* Called when available program list changed.
		*
		* Use getProgramList() to get the actual list.
		*
		* @hide FutureFeature
		*/
		public void onProgramListChanged() {}
		}

		}