Add Descrambler resource management in Tuner Resource Manager
Test: make
Bug: 151186028
Change-Id: I9f00d377c7d63b438026d8ab150c0ff42d6e3bac
diff --git a/media/java/android/media/tv/tunerresourcemanager/ITunerResourceManager.aidl b/media/java/android/media/tv/tunerresourcemanager/ITunerResourceManager.aidl
index b21bc89..77cac6e 100644
--- a/media/java/android/media/tv/tunerresourcemanager/ITunerResourceManager.aidl
+++ b/media/java/android/media/tv/tunerresourcemanager/ITunerResourceManager.aidl
@@ -20,6 +20,7 @@
import android.media.tv.tunerresourcemanager.IResourcesReclaimListener;
import android.media.tv.tunerresourcemanager.ResourceClientProfile;
import android.media.tv.tunerresourcemanager.TunerDemuxRequest;
+import android.media.tv.tunerresourcemanager.TunerDescramblerRequest;
import android.media.tv.tunerresourcemanager.TunerFrontendInfo;
import android.media.tv.tunerresourcemanager.TunerFrontendRequest;
import android.media.tv.tunerresourcemanager.TunerLnbRequest;
@@ -172,6 +173,30 @@
boolean requestDemux(in TunerDemuxRequest request, out int[] demuxHandle);
/*
+ * This API is used by the Tuner framework to request an available descrambler from the
+ * TunerHAL.
+ *
+ * <p>There are three possible scenarios:
+ * <ul>
+ * <li>If there is descrambler available, the API would send the handle back.
+ *
+ * <li>If no Descrambler is available but the current request info can show higher priority than
+ * other uses of Descrambler, the API will send
+ * {@link IResourcesReclaimListener#onReclaimResources()} to the {@link Tuner}. Tuner would
+ * handle the resource reclaim on the holder of lower priority and notify the holder of its
+ * resource loss.
+ *
+ * <li>If no Descrambler can be granted, the API would return false.
+ * <ul>
+ *
+ * @param request {@link TunerDescramblerRequest} information of the current request.
+ * @param descramblerHandle a one-element array to return the granted descrambler handle.
+ *
+ * @return true if there is Descrambler granted.
+ */
+ boolean requestDescrambler(in TunerDescramblerRequest request, out int[] descramblerHandle);
+
+ /*
* This API is used by the Tuner framework to request an available Cas session. This session
* needs to be under the CAS system with the id indicated in the {@code request}.
*
@@ -243,6 +268,15 @@
void releaseDemux(in int demuxHandle);
/*
+ * Notifies the TRM that the Descrambler with the given handle was released.
+ *
+ * <p>Client must call this whenever it releases a descrambler.
+ *
+ * @param demuxHandle the handle of the released Tuner Descrambler.
+ */
+ void releaseDescrambler(in int descramblerHandle);
+
+ /*
* Notifies the TRM that the given Cas session has been released.
*
* <p>Client must call this whenever it releases a Cas session.
diff --git a/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.aidl b/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.aidl
new file mode 100644
index 0000000..fbafb3b
--- /dev/null
+++ b/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.media.tv.tunerresourcemanager;
+
+/**
+ * Information required to request a Tuner Descrambler.
+ *
+ * @hide
+ */
+parcelable TunerDescramblerRequest;
\ No newline at end of file
diff --git a/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.java b/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.java
new file mode 100644
index 0000000..5816287
--- /dev/null
+++ b/media/java/android/media/tv/tunerresourcemanager/TunerDescramblerRequest.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.media.tv.tunerresourcemanager;
+
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Log;
+
+/**
+ * Information required to request a Tuner Descrambler.
+ *
+ * @hide
+ */
+public final class TunerDescramblerRequest implements Parcelable {
+ static final String TAG = "TunerDescramblerRequest";
+
+ public static final
+ @NonNull
+ Parcelable.Creator<TunerDescramblerRequest> CREATOR =
+ new Parcelable.Creator<TunerDescramblerRequest>() {
+ @Override
+ public TunerDescramblerRequest createFromParcel(Parcel source) {
+ try {
+ return new TunerDescramblerRequest(source);
+ } catch (Exception e) {
+ Log.e(TAG, "Exception creating TunerDescramblerRequest from parcel", e);
+ return null;
+ }
+ }
+
+ @Override
+ public TunerDescramblerRequest[] newArray(int size) {
+ return new TunerDescramblerRequest[size];
+ }
+ };
+
+ /**
+ * Client id of the client that sends the request.
+ */
+ private final int mClientId;
+
+ private TunerDescramblerRequest(@NonNull Parcel source) {
+ mClientId = source.readInt();
+ }
+
+ /**
+ * Constructs a new {@link TunerDescramblerRequest} with the given parameters.
+ *
+ * @param clientId id of the client.
+ */
+ public TunerDescramblerRequest(int clientId) {
+ mClientId = clientId;
+ }
+
+ /**
+ * Returns the id of the client.
+ */
+ public int getClientId() {
+ return mClientId;
+ }
+
+ // Parcelable
+ @Override
+ public int describeContents() {
+ return 0;
+ }
+
+ @NonNull
+ @Override
+ public String toString() {
+ StringBuilder b = new StringBuilder(128);
+ b.append("TunerDescramblerRequest {clientId=").append(mClientId);
+ b.append("}");
+ return b.toString();
+ }
+
+ @Override
+ public void writeToParcel(@NonNull Parcel dest, int flags) {
+ dest.writeInt(mClientId);
+ }
+}
diff --git a/media/java/android/media/tv/tunerresourcemanager/TunerResourceManager.java b/media/java/android/media/tv/tunerresourcemanager/TunerResourceManager.java
index 1c1d7fa..524b6c2 100644
--- a/media/java/android/media/tv/tunerresourcemanager/TunerResourceManager.java
+++ b/media/java/android/media/tv/tunerresourcemanager/TunerResourceManager.java
@@ -292,6 +292,40 @@
}
/**
+ * Requests a Tuner Descrambler resource.
+ *
+ * <p>There are three possible scenarios:
+ * <ul>
+ * <li>If there is Descrambler available, the API would send the handle back.
+ *
+ * <li>If no Descrambler is available but the current request has a higher priority than other
+ * uses of descramblers, the API will send
+ * {@link IResourcesReclaimListener#onReclaimResources()} to the {@link Tuner}. Tuner would
+ * handle the resource reclaim on the holder of lower priority and notify the holder of its
+ * resource loss.
+ *
+ * <li>If no Descrambler system can be granted, the API would return false.
+ * <ul>
+ *
+ * @param request {@link TunerDescramblerRequest} information of the current request.
+ * @param descramblerHandle a one-element array to return the granted Descrambler handle.
+ * If no Descrambler granted, this will return
+ * {@link #INVALID_RESOURCE_HANDLE}.
+ *
+ * @return true if there is Descrambler granted.
+ */
+ public boolean requestDescrambler(@NonNull TunerDescramblerRequest request,
+ @NonNull int[] descramblerHandle) {
+ boolean result = false;
+ try {
+ result = mService.requestDescrambler(request, descramblerHandle);
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ return result;
+ }
+
+ /**
* Requests a CAS session resource.
*
* <p>There are three possible scenarios:
@@ -392,6 +426,21 @@
}
/**
+ * Notifies the TRM that the Descrambler with the given handle has been released.
+ *
+ * <p>Client must call this whenever it releases an Descrambler.
+ *
+ * @param descramblerHandle the handle of the released Tuner Descrambler.
+ */
+ public void releaseDescrambler(int descramblerHandle) {
+ try {
+ mService.releaseDescrambler(descramblerHandle);
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
* Notifies the TRM that the given Cas session has been released.
*
* <p>Client must call this whenever it releases a Cas session.
diff --git a/services/core/java/com/android/server/tv/tunerresourcemanager/TunerResourceManagerService.java b/services/core/java/com/android/server/tv/tunerresourcemanager/TunerResourceManagerService.java
index 2d3fc74..b43d8b7 100644
--- a/services/core/java/com/android/server/tv/tunerresourcemanager/TunerResourceManagerService.java
+++ b/services/core/java/com/android/server/tv/tunerresourcemanager/TunerResourceManagerService.java
@@ -25,6 +25,7 @@
import android.media.tv.tunerresourcemanager.ITunerResourceManager;
import android.media.tv.tunerresourcemanager.ResourceClientProfile;
import android.media.tv.tunerresourcemanager.TunerDemuxRequest;
+import android.media.tv.tunerresourcemanager.TunerDescramblerRequest;
import android.media.tv.tunerresourcemanager.TunerFrontendInfo;
import android.media.tv.tunerresourcemanager.TunerFrontendRequest;
import android.media.tv.tunerresourcemanager.TunerLnbRequest;
@@ -199,6 +200,15 @@
}
@Override
+ public boolean requestDescrambler(@NonNull TunerDescramblerRequest request,
+ @NonNull int[] descrambleHandle) {
+ if (DEBUG) {
+ Slog.d(TAG, "requestDescrambler(request=" + request + ")");
+ }
+ return true;
+ }
+
+ @Override
public boolean requestCasSession(
@NonNull CasSessionRequest request, @NonNull int[] sessionResourceId) {
if (DEBUG) {
@@ -231,6 +241,13 @@
}
@Override
+ public void releaseDescrambler(int descramblerHandle) {
+ if (DEBUG) {
+ Slog.d(TAG, "releaseDescrambler(descramblerHandle=" + descramblerHandle + ")");
+ }
+ }
+
+ @Override
public void releaseCasSession(int sessionResourceId) {
if (DEBUG) {
Slog.d(TAG, "releaseCasSession(sessionResourceId=" + sessionResourceId + ")");