am c61f4dd7: Merge "Add HDMI-CEC service" into klp-modular-dev

* commit 'c61f4dd744b1b0396703aa58eb22fc31d2b7050e':
  Add HDMI-CEC service

6 files changed, 429 insertions, 0 deletions

diff --git a/core/java/android/hardware/hdmi/HdmiCec.java b/core/java/android/hardware/hdmi/HdmiCec.java
new file mode 100644
index 0000000..c95431a
--- /dev/null
+++ b/core/java/android/hardware/hdmi/HdmiCec.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2014 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.hardware.hdmi;
+
+/**
+ * Defines constants and utility methods related to HDMI-CEC protocol.
+ */
+public final class HdmiCec {
+
+    /** TV device type. */
+    public static final int DEVICE_TV = 0;
+
+    /** Recording device type. */
+    public static final int DEVICE_RECORDER = 1;
+
+    /** Device type reserved for future usage. */
+    public static final int DEVICE_RESERVED = 2;
+
+    /** Tuner device type. */
+    public static final int DEVICE_TUNER = 3;
+
+    /** Playback device type. */
+    public static final int DEVICE_PLAYBACK = 4;
+
+    /** Audio system device type. */
+    public static final int DEVICE_AUDIO_SYSTEM = 5;
+
+    // Value indicating the device is not an active source.
+    public static final int DEVICE_INACTIVE = -1;
+
+    /** Logical address for TV */
+    public static final int ADDR_TV = 0;
+
+    /** Logical address for recorder 1 */
+    public static final int ADDR_RECORDER_1 = 1;
+
+    /** Logical address for recorder 2 */
+    public static final int ADDR_RECORDER_2 = 2;
+
+    /** Logical address for tuner 1 */
+    public static final int ADDR_TUNER_1 = 3;
+
+    /** Logical address for playback 1 */
+    public static final int ADDR_PLAYBACK_1 = 4;
+
+    /** Logical address for audio system */
+    public static final int ADDR_AUDIO_SYSTEM = 5;
+
+    /** Logical address for tuner 2 */
+    public static final int ADDR_TUNER_2 = 6;
+
+    /** Logical address for tuner 3 */
+    public static final int ADDR_TUNER_3 = 7;
+
+    /** Logical address for playback 2 */
+    public static final int ADDR_PLAYBACK_2 = 8;
+
+    /** Logical address for recorder 3 */
+    public static final int ADDR_RECORDER_3 = 9;
+
+    /** Logical address for tuner 4 */
+    public static final int ADDR_TUNER_4 = 10;
+
+    /** Logical address for playback 3 */
+    public static final int ADDR_PLAYBACK_3 = 11;
+
+    /** Logical address reserved for future usage */
+    public static final int ADDR_RESERVED_1 = 12;
+
+    /** Logical address reserved for future usage */
+    public static final int ADDR_RESERVED_2 = 13;
+
+    /** Logical address for TV other than the one assigned with {@link #ADDR_TV} */
+    public static final int ADDR_FREE_USE = 14;
+
+    /** Logical address for devices to which address cannot be allocated */
+    public static final int ADDR_UNREGISTERED = 15;
+
+    /** Logical address used in the destination address field for broadcast messages */
+    public static final int ADDR_BROADCAST = 15;
+
+    /** Logical address used to indicate it is not initialized or invalid. */
+    public static final int ADDR_INVALID = -1;
+
+    // TODO: Complete the list of CEC messages definition.
+    public static final int MESSAGE_ACTIVE_SOURCE = 0x9D;
+
+    private static final int[] ADDRESS_TO_TYPE = {
+        DEVICE_TV,  // ADDR_TV
+        DEVICE_RECORDER,  // ADDR_RECORDER_1
+        DEVICE_RECORDER,  // ADDR_RECORDER_2
+        DEVICE_TUNER,  // ADDR_TUNER_1
+        DEVICE_PLAYBACK,  // ADDR_PLAYBACK_1
+        DEVICE_AUDIO_SYSTEM,  // ADDR_AUDIO_SYSTEM
+        DEVICE_TUNER,  // ADDR_TUNER_2
+        DEVICE_TUNER,  // ADDR_TUNER_3
+        DEVICE_PLAYBACK,  // ADDR_PLAYBACK_2
+        DEVICE_RECORDER,  // ADDR_RECORDER_3
+        DEVICE_TUNER,  // ADDR_TUNER_4
+        DEVICE_PLAYBACK,  // ADDR_PLAYBACK_3
+    };
+
+    private static final String[] DEFAULT_NAMES = {
+        "TV",
+        "Recorder_1",
+        "Recorder_2",
+        "Tuner_1",
+        "Playback_1",
+        "AudioSystem",
+        "Tuner_2",
+        "Tuner_3",
+        "Playback_2",
+        "Recorder_3",
+        "Tuner_4",
+        "Playback_3",
+    };
+
+    private HdmiCec() { }  // Prevents instantiation.
+
+    /**
+     * Check if the given type is valid. A valid type is one of the actual
+     * logical device types defined in the standard ({@link #DEVICE_TV},
+     * {@link #DEVICE_PLAYBACK}, {@link #DEVICE_TUNER}, {@link #DEVICE_RECORDER},
+     * and {@link #DEVICE_AUDIO_SYSTEM}).
+     *
+     * @param type device type
+     * @return true if the given type is valid
+     */
+    public static boolean isValidType(int type) {
+        return (DEVICE_TV <= type && type <= DEVICE_AUDIO_SYSTEM)
+                && type != DEVICE_RESERVED;
+    }
+
+    /**
+     * Check if the given logical address is valid. A logical address is valid
+     * if it is one allocated for an actual device which allows communication
+     * with other logical devices.
+     *
+     * @param address logical address
+     * @return true if the given address is valid
+     */
+    public static boolean isValidAddress(int address) {
+        // TODO: We leave out the address 'free use(14)' for now. Check this later
+        //       again to make sure it is a valid address for communication.
+        return (ADDR_TV <= address && address <= ADDR_PLAYBACK_3);
+    }
+
+    /**
+     * Return the device type for the given logical address.
+     *
+     * @param address logical address
+     * @return device type for the given logical address; DEVICE_INACTIVE
+     *         if the address is not valid.
+     */
+    public static int getTypeFromAddress(int address) {
+        if (isValidAddress(address)) {
+            return ADDRESS_TO_TYPE[address];
+        }
+        return DEVICE_INACTIVE;
+    }
+
+    /**
+     * Return the default device name for a logical address. This is the name
+     * by which the logical device is known to others until a name is
+     * set explicitly using HdmiCecService.setOsdName.
+     *
+     * @param address logical address
+     * @return default device name; empty string if the address is not valid
+     */
+    public static String getDefaultDeviceName(int address) {
+        if (isValidAddress(address)) {
+            return DEFAULT_NAMES[address];
+        }
+        return "";
+    }
+}
diff --git a/core/java/android/hardware/hdmi/HdmiCecMessage.aidl b/core/java/android/hardware/hdmi/HdmiCecMessage.aidl
new file mode 100644
index 0000000..6687ba4
--- /dev/null
+++ b/core/java/android/hardware/hdmi/HdmiCecMessage.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2014 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.hardware.hdmi;
+
+parcelable HdmiCecMessage;
diff --git a/core/java/android/hardware/hdmi/HdmiCecMessage.java b/core/java/android/hardware/hdmi/HdmiCecMessage.java
new file mode 100644
index 0000000..be94d97
--- /dev/null
+++ b/core/java/android/hardware/hdmi/HdmiCecMessage.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2014 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.hardware.hdmi;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Arrays;
+
+/**
+ * A class to encapsulate HDMI-CEC message used for the devices connected via
+ * HDMI cable to communicate with one another. A message is defined by its
+ * source and destination address, command (or opcode), and optional parameters.
+ */
+public final class HdmiCecMessage implements Parcelable {
+
+    private static final int MAX_MESSAGE_LENGTH = 16;
+
+    private final int mSource;
+    private final int mDestination;
+
+    private final int mOpcode;
+    private final byte[] mParams;
+
+    /**
+     * Constructor.
+     */
+    public HdmiCecMessage(int source, int destination, int opcode, byte[] params) {
+        mSource = source;
+        mDestination = destination;
+        mOpcode = opcode;
+        mParams = Arrays.copyOf(params, params.length);
+    }
+
+    /**
+     * Return the source address field of the message. It is the logical address
+     * of the device which generated the message.
+     *
+     * @return source address
+     */
+    public int getSource() {
+        return mSource;
+    }
+
+    /**
+     * Return the destination address field of the message. It is the logical address
+     * of the device to which the message is sent.
+     *
+     * @return destination address
+     */
+    public int getDestination() {
+        return mDestination;
+    }
+
+    /**
+     * Return the opcode field of the message. It is the type of the message that
+     * tells the destination device what to do.
+     *
+     * @return opcode
+     */
+    public int getOpcode() {
+        return mOpcode;
+    }
+
+    /**
+     * Return the parameter field of the message. The contents of parameter varies
+     * from opcode to opcode, and is used together with opcode to describe
+     * the action for the destination device to take.
+     *
+     * @return parameter
+     */
+    public byte[] getParams() {
+        return mParams;
+    }
+
+    /**
+     * Describe the kinds of special objects contained in this Parcelable's
+     * marshalled representation.
+     */
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    /**
+     * Flatten this object in to a Parcel.
+     *
+     * @param dest The Parcel in which the object should be written.
+     * @param flags Additional flags about how the object should be written.
+     *        May be 0 or {@link Parcelable#PARCELABLE_WRITE_RETURN_VALUE}.
+     */
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(mSource);
+        dest.writeInt(mDestination);
+        dest.writeInt(mOpcode);
+        dest.writeInt(mParams.length);
+        dest.writeByteArray(mParams);
+    }
+
+    public static final Parcelable.Creator<HdmiCecMessage> CREATOR
+            = new Parcelable.Creator<HdmiCecMessage>() {
+        /**
+         * Rebuild a HdmiCecMessage previously stored with writeToParcel().
+         * @param p HdmiCecMessage object to read the Rating from
+         * @return a new HdmiCecMessage created from the data in the parcel
+         */
+        public HdmiCecMessage createFromParcel(Parcel p) {
+            int source = p.readInt();
+            int destination = p.readInt();
+            int opcode = p.readInt();
+            byte[] params = new byte[p.readInt()];
+            p.readByteArray(params);
+            return new HdmiCecMessage(source, destination, opcode, params);
+        }
+        public HdmiCecMessage[] newArray(int size) {
+            return new HdmiCecMessage[size];
+        }
+    };
+
+    @Override
+    public String toString() {
+        StringBuffer s = new StringBuffer();
+        s.append(String.format("src: %d dst: %d op: %2X params: ", mSource, mDestination, mOpcode));
+        for (byte data : mParams) {
+            s.append(String.format("%02X ", data));
+        }
+        return s.toString();
+    }
+}
+
diff --git a/core/java/android/hardware/hdmi/IHdmiCecListener.aidl b/core/java/android/hardware/hdmi/IHdmiCecListener.aidl
new file mode 100644
index 0000000..d281ce6
--- /dev/null
+++ b/core/java/android/hardware/hdmi/IHdmiCecListener.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2014 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.hardware.hdmi;
+
+import android.hardware.hdmi.HdmiCecMessage;
+
+/**
+ * Interface definition for HdmiCecService to do interprocess communcation.
+ *
+ * @hide
+ */
+oneway interface IHdmiCecListener {
+    void onMessageReceived(in HdmiCecMessage message);
+    void onCableStatusChanged(in boolean connected);
+}
diff --git a/core/java/android/hardware/hdmi/IHdmiCecService.aidl b/core/java/android/hardware/hdmi/IHdmiCecService.aidl
new file mode 100644
index 0000000..6fefcf8
--- /dev/null
+++ b/core/java/android/hardware/hdmi/IHdmiCecService.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2014 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.hardware.hdmi;
+
+import android.hardware.hdmi.HdmiCecMessage;
+import android.hardware.hdmi.IHdmiCecListener;
+import android.os.IBinder;
+
+/**
+ * Binder interface that components running in the appplication process
+ * will use to enable HDMI-CEC protocol exchange with other devices.
+ *
+ * @hide
+ */
+interface IHdmiCecService {
+    IBinder allocateLogicalDevice(int type, IHdmiCecListener listener);
+    void removeServiceListener(IBinder b, IHdmiCecListener listener);
+    void setOsdName(IBinder b, String name);
+    void sendActiveSource(IBinder b);
+    void sendInactiveSource(IBinder b);
+    void sendImageViewOn(IBinder b);
+    void sendTextViewOn(IBinder b);
+    void sendGiveDevicePowerStatus(IBinder b, int address);
+    void sendMessage(IBinder b, in HdmiCecMessage message);
+}
+
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index eaf9318..0a1fb84 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -682,6 +682,12 @@
         android:label="@string/permlab_installLocationProvider"
         android:description="@string/permdesc_installLocationProvider" />
 
+    <!-- Allows HDMI-CEC service to access device and configuration files.
+         @hide This should only be used by HDMI-CEC service.
+    -->
+    <permission android:name="android.permission.HDMI_CEC"
+        android:protectionLevel="signatureOrSystem" />
+
     <!-- Allows an application to use location features in hardware,
          such as the geofencing api.
          <p>Not for use by third-party applications. -->