1 files changed, 153 insertions, 0 deletions
diff --git a/core/java/android/hardware/ConsumerIrManager.java b/core/java/android/hardware/ConsumerIrManager.java
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+++ b/core/java/android/hardware/ConsumerIrManager.java
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+/*
+ * Copyright (C) 2013 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;
+
+import android.content.Context;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.util.Log;
+
+/**
+ * Class that operates consumer infrared on the device.
+ *
+ * <p>
+ * To obtain an instance of the system infrared transmitter, call
+ * {@link Context#getSystemService} with {@link Context#CONSUMER_IR} as the argument.
+ * </p>
+ */
+public final class ConsumerIrManager {
+    private static final String TAG = "ConsumerIr";
+
+    private final String mPackageName;
+    private final IConsumerIrService mService;
+
+    /**
+     * @hide to prevent subclassing from outside of the framework
+     */
+    public ConsumerIrManager(Context context) {
+        mPackageName = context.getPackageName();
+        mService = IConsumerIrService.Stub.asInterface(
+                ServiceManager.getService(Context.CONSUMER_IR_SERVICE));
+    }
+
+    /**
+     * Check whether the device has an infrared emitter.
+     *
+     * @return true if the device has an infrared emitter, else false.
+     */
+    public boolean hasIrEmitter() {
+        if (mService == null) {
+            Log.w(TAG, "no consumer ir service.");
+            return false;
+        }
+
+        try {
+            return mService.hasIrEmitter();
+        } catch (RemoteException e) {
+        }
+        return false;
+    }
+
+    /**
+     * Tansmit and infrared pattern
+     * <p>
+     * This method is synchronous; when it returns the pattern has
+     * been transmitted. Only patterns shorter than 2 seconds will
+     * be transmitted.
+     * </p>
+     *
+     * @param carrierFrequency The IR carrier frequency in Hertz.
+     * @param pattern The alternating on/off pattern in microseconds to transmit.
+     */
+    public void transmit(int carrierFrequency, int[] pattern) {
+        if (mService == null) {
+            Log.w(TAG, "failed to transmit; no consumer ir service.");
+            return;
+        }
+
+        try {
+            mService.transmit(mPackageName, carrierFrequency, pattern);
+        } catch (RemoteException e) {
+            Log.w(TAG, "failed to transmit.", e);
+        }
+    }
+
+    /**
+     * Represents a range of carrier frequencies (inclusive) on which the
+     * infrared transmitter can transmit
+     */
+    public final class CarrierFrequencyRange {
+        private final int mMinFrequency;
+        private final int mMaxFrequency;
+
+        /**
+         * Create a segment of a carrier frequency range.
+         *
+         * @param min The minimum transmittable frequency in this range segment.
+         * @param max The maximum transmittable frequency in this range segment.
+         */
+        public CarrierFrequencyRange(int min, int max) {
+            mMinFrequency = min;
+            mMaxFrequency = max;
+        }
+
+        /**
+         * Get the minimum (inclusive) frequency in this range segment.
+         */
+        public int getMinFrequency() {
+            return mMinFrequency;
+        }
+
+        /**
+         * Get the maximum (inclusive) frequency in this range segment.
+         */
+        public int getMaxFrequency() {
+            return mMaxFrequency;
+        }
+    };
+
+    /**
+     * Query the infrared transmitter's supported carrier frequencies
+     *
+     * @return an array of {@link #CarrierFreqRange} objects representing
+     * the ranges that the transmitter can support, or null if there was
+     * an error communicating with the Consumer IR Service.
+     */
+    public CarrierFrequencyRange[] getCarrierFrequencies() {
+        if (mService == null) {
+            Log.w(TAG, "no consumer ir service.");
+            return null;
+        }
+
+        try {
+            int[] freqs = mService.getCarrierFrequencies();
+            if (freqs.length % 2 != 0) {
+                Log.w(TAG, "consumer ir service returned an uneven number of frequencies.");
+                return null;
+            }
+            CarrierFrequencyRange[] range = new CarrierFrequencyRange[freqs.length / 2];
+
+            for (int i = 0; i < freqs.length; i += 2) {
+                range[i / 2] = new CarrierFrequencyRange(freqs[i], freqs[i+1]);
+            }
+            return range;
+        } catch (RemoteException e) {
+        }
+        return null;
+    }
+
+}