Cleanup Tuner.java (43a8d489) · Commits · e / os / android_frameworks_base

media/java/android/media/tv/tuner/Tuner.java

+156 −21

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.media.tv.tuner;

		import android.annotation.BytesLong;
		import android.annotation.CallbackExecutor;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		@@ -27,6 +28,8 @@ import android.media.tv.tuner.TunerConstants.FilterSubtype;
		import android.media.tv.tuner.TunerConstants.FrontendScanType;
		import android.media.tv.tuner.TunerConstants.Result;
		import android.media.tv.tuner.dvr.Dvr;
		import android.media.tv.tuner.dvr.DvrCallback;
		import android.media.tv.tuner.dvr.DvrSettings;
		import android.media.tv.tuner.filter.FilterConfiguration.FilterType;
		import android.media.tv.tuner.filter.FilterEvent;
		import android.media.tv.tuner.filter.TimeFilter;
		@@ -88,6 +91,31 @@ public final class Tuner implements AutoCloseable {
		nativeSetup();
		}

		/**
		* Constructs a Tuner instance.
		*
		* @param context the context of the caller.
		* @param tvInputSessionId the session ID of the TV input.
		* @param useCase the use case of this Tuner instance.
		*
		* @hide
		* TODO: replace the other constructor
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		public Tuner(@NonNull Context context, @NonNull String tvInputSessionId, int useCase) {
		mContext = context;
		}

		/**
		* Shares the frontend resource with another Tuner instance
		*
		* @param tuner the Tuner instance to share frontend resource with.
		*
		* @hide
		*/
		public void shareFrontend(@NonNull Tuner tuner) { }


		private long mNativeContext; // used by native jMediaTuner

		/** @hide */
		@@ -125,7 +153,7 @@ public final class Tuner implements AutoCloseable {
		private native int nativeConnectCiCam(int ciCamId);
		private native int nativeDisconnectCiCam();
		private native FrontendInfo nativeGetFrontendInfo(int id);
		private native Filter nativeOpenFilter(int type, int subType, int bufferSize);
		private native Filter nativeOpenFilter(int type, int subType, long bufferSize);
		private native TimeFilter nativeOpenTimeFilter();

		private native List<Integer> nativeGetLnbIds();
		@@ -133,7 +161,7 @@ public final class Tuner implements AutoCloseable {

		private native Descrambler nativeOpenDescrambler();

		private native Dvr nativeOpenDvr(int type, int bufferSize);
		private native Dvr nativeOpenDvr(int type, long bufferSize);

		private static native DemuxCapabilities nativeGetDemuxCapabilities();

		@@ -159,6 +187,21 @@ public final class Tuner implements AutoCloseable {
		void onFilterStatusChanged(@NonNull Filter filter, @FilterStatus int status);
		}


		/**
		* Listener for resource lost.
		*
		* @hide
		*/
		public interface OnResourceLostListener {
		/**
		* Invoked when resource lost.
		*
		* @param tuner the tuner instance whose resource is being reclaimed.
		*/
		void onResourceLost(@NonNull Tuner tuner);
		}

		@Nullable
		private EventHandler createEventHandler() {
		Looper looper;
		@@ -221,23 +264,32 @@ public final class Tuner implements AutoCloseable {
		/**
		* Stops a previous tuning.
		*
		* If the method completes successfully the frontend is no longer tuned and no data
		* <p>If the method completes successfully, the frontend is no longer tuned and no data
		* will be sent to attached filters.
		*
		* @return result status of the operation.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int stopTune() {
		TunerUtils.checkTunerPermission(mContext);
		return nativeStopTune();
		}

		/**
		* Scan channels.
		*
		* @param settings A {@link FrontendSettings} to configure the frontend.
		* @param scanType The scan type.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		public int scan(@NonNull FrontendSettings settings, @FrontendScanType int scanType,
		@NonNull @CallbackExecutor Executor executor, @NonNull ScanCallback scanCallback) {
		TunerUtils.checkTunerPermission(mContext);
		mScanCallback = scanCallback;
		mScanCallbackExecutor = executor;
		return nativeScan(settings.getType(), settings, scanType);
		@@ -255,6 +307,7 @@ public final class Tuner implements AutoCloseable {
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int stopScan() {
		TunerUtils.checkTunerPermission(mContext);
		int retVal = nativeStopScan();
		@@ -266,37 +319,44 @@ public final class Tuner implements AutoCloseable {
		/**
		* Sets Low-Noise Block downconverter (LNB) for satellite frontend.
		*
		* This assigns a hardware LNB resource to the satellite tuner. It can be
		* <p>This assigns a hardware LNB resource to the satellite tuner. It can be
		* called multiple times to update LNB assignment.
		*
		* @param lnb the LNB instance.
		*
		* @return result status of the operation.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int setLnb(@NonNull Lnb lnb) {
		TunerUtils.checkTunerPermission(mContext);
		return nativeSetLnb(lnb.mId);
		}

		/**
		* Enable or Disable Low Noise Amplifier (LNA).
		*
		* @param enable true to activate LNA module; false to deactivate LNA
		* @param enable {@code true} to activate LNA module; {@code false} to deactivate LNA.
		*
		* @return result status of the operation.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int setLna(boolean enable) {
		TunerUtils.checkTunerPermission(mContext);
		return nativeSetLna(enable);
		}

		/**
		* Gets the statuses of the frontend.
		*
		* This retrieve the statuses of the frontend for given status types.
		*
		* @param statusTypes an array of status type which the caller request.
		* <p>This retrieve the statuses of the frontend for given status types.
		*
		* @param statusTypes an array of status types which the caller requests.
		* @return statuses which response the caller's requests.
		* @hide
		*/
		@@ -310,59 +370,77 @@ public final class Tuner implements AutoCloseable {
		*
		* @param filter the filter instance for the hardware sync ID.
		* @return the id of hardware A/V sync.
		*
		* @hide
		*/
		public int getAvSyncHwId(Filter filter) {
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		public int getAvSyncHwId(@NonNull Filter filter) {
		TunerUtils.checkTunerPermission(mContext);
		return nativeGetAvSyncHwId(filter);
		}

		/**
		* Gets the current timestamp for A/V sync
		* Gets the current timestamp for Audio/Video sync
		*
		* The timestamp is maintained by hardware. The timestamp based on 90KHz, and it's format is the
		* same as PTS (Presentation Time Stamp).
		* <p>The timestamp is maintained by hardware. The timestamp based on 90KHz, and it's format is
		* the same as PTS (Presentation Time Stamp).
		*
		* @param avSyncHwId the hardware id of A/V sync.
		* @return the current timestamp of hardware A/V sync.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		public long getAvSyncTime(int avSyncHwId) {
		TunerUtils.checkTunerPermission(mContext);
		return nativeGetAvSyncTime(avSyncHwId);
		}


		/**
		* Connects Conditional Access Modules (CAM) through Common Interface (CI)
		*
		* The demux uses the output from the frontend as the input by default, and must change to use
		* the output from CI-CAM as the input after this call.
		* <p>The demux uses the output from the frontend as the input by default, and must change to
		* use the output from CI-CAM as the input after this call.
		*
		* @param ciCamId specify CI-CAM Id to connect.
		* @return result status of the operation.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int connectCiCam(int ciCamId) {
		TunerUtils.checkTunerPermission(mContext);
		return nativeConnectCiCam(ciCamId);
		}

		/**
		* Disconnects Conditional Access Modules (CAM)
		*
		* The demux will use the output from the frontend as the input after this call.
		* <p>The demux will use the output from the frontend as the input after this call.
		*
		* @return result status of the operation.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Result
		public int disconnectCiCam() {
		TunerUtils.checkTunerPermission(mContext);
		return nativeDisconnectCiCam();
		}

		/**
		* Retrieve the frontend information.
		* Gets the frontend information.
		*
		* @return The frontend information. {@code null} if the operation failed.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Nullable
		public FrontendInfo getFrontendInfo() {
		TunerUtils.checkTunerPermission(mContext);
		if (mFrontend == null) {
		throw new IllegalStateException("frontend is not initialized");
		}
		@@ -370,10 +448,13 @@ public final class Tuner implements AutoCloseable {
		}

		/**
		* Gets frontend ID.
		* Gets the frontend ID.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		public int getFrontendId() {
		TunerUtils.checkTunerPermission(mContext);
		if (mFrontend == null) {
		throw new IllegalStateException("frontend is not initialized");
		}
		@@ -382,6 +463,7 @@ public final class Tuner implements AutoCloseable {

		/**
		* Gets Demux capabilities.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@@ -424,8 +506,26 @@ public final class Tuner implements AutoCloseable {
		private Filter() {}
		}

		private Filter openFilter(@FilterType int mainType, @FilterSubtype int subType, int bufferSize,
		FilterCallback cb) {
		/**
		* Opens a filter object based on the given types and buffer size.
		*
		* @param mainType the main type of the filter.
		* @param subType the subtype of the filter.
		* @param bufferSize the buffer size of the filter to be opened in bytes. The buffer holds the
		* data output from the filter.
		* @param cb the callback to receive notifications from filter.
		* @param executor the executor on which callback will be invoked. The default event handler
		* executor is used if it's {@code null}.
		* @return the opened filter. {@code null} if the operation failed.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Nullable
		public Filter openFilter(@FilterType int mainType, @FilterSubtype int subType,
		@BytesLong long bufferSize, @Nullable FilterCallback cb,
		@CallbackExecutor @Nullable Executor executor) {
		TunerUtils.checkTunerPermission(mContext);
		Filter filter = nativeOpenFilter(
		mainType, TunerUtils.getFilterSubtype(mainType, subType), bufferSize);
		if (filter != null) {
		@@ -437,6 +537,24 @@ public final class Tuner implements AutoCloseable {
		return filter;
		}

		/**
		* Opens an LNB (low-noise block downconverter) object.
		*
		* @param cb the callback to receive notifications from LNB.
		* @param executor the executor on which callback will be invoked. The default event handler
		* executor is used if it's {@code null}.
		* @return the opened LNB object. {@code null} if the operation failed.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Nullable
		public Lnb openLnb(LnbCallback cb, @CallbackExecutor @Nullable Executor executor) {
		TunerUtils.checkTunerPermission(mContext);
		// TODO: use resource manager to get LNB ID.
		return new Lnb(0);
		}

		private List<Integer> getLnbIds() {
		mLnbIds = nativeGetLnbIds();
		return mLnbIds;
		@@ -484,7 +602,24 @@ public final class Tuner implements AutoCloseable {
		return nativeOpenDescrambler();
		}

		private Dvr openDvr(int type, int bufferSize) {
		/**
		* Open a DVR (Digital Video Record) instance.
		*
		* @param type the DVR type to be opened.
		* @param bufferSize the buffer size of the output in bytes. It's used to hold output data of
		* the attached filters.
		* @param cb the callback to receive notifications from DVR.
		* @param executor the executor on which callback will be invoked. The default event handler
		* executor is used if it's {@code null}.
		* @return the opened DVR object. {@code null} if the operation failed.
		*
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.ACCESS_TV_TUNER)
		@Nullable
		public Dvr openDvr(@DvrSettings.Type int type, @BytesLong long bufferSize, DvrCallback cb,
		@CallbackExecutor @Nullable Executor executor) {
		TunerUtils.checkTunerPermission(mContext);
		Dvr dvr = nativeOpenDvr(type, bufferSize);
		return dvr;
		}