Revert "Revert "Initial implementation of broadcast radio HAL.""

This reverts commit 2c2df013b25bd96976af82db7e6f3480f0571c6e.
diff --git a/broadcastradio/1.0/default/Tuner.cpp b/broadcastradio/1.0/default/Tuner.cpp
new file mode 100644
index 0000000..0c1d8ab
--- /dev/null
+++ b/broadcastradio/1.0/default/Tuner.cpp
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#define LOG_TAG "Tuner"
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+
+#include "BroadcastRadio.h"
+#include "Tuner.h"
+#include "Utils.h"
+#include <system/radio_metadata.h>
+
+namespace android {
+namespace hardware {
+namespace broadcastradio {
+namespace V1_0 {
+namespace implementation {
+
+void Tuner::onCallback(radio_hal_event_t *halEvent)
+{
+    BandConfig config;
+    ProgramInfo info;
+    hidl_vec<MetaData> metadata;
+
+    if (mCallback != 0) {
+        switch(halEvent->type) {
+        case RADIO_EVENT_CONFIG:
+            Utils::convertBandConfigFromHal(&config, &halEvent->config);
+            mCallback->configChange(Utils::convertHalResult(halEvent->status), config);
+            break;
+        case RADIO_EVENT_ANTENNA:
+            mCallback->antennaStateChange(halEvent->on);
+            break;
+        case RADIO_EVENT_TUNED:
+            Utils::convertProgramInfoFromHal(&info, &halEvent->info, true);
+            mCallback->tuneComplete(Utils::convertHalResult(halEvent->status), info);
+            break;
+        case RADIO_EVENT_METADATA: {
+            uint32_t channel;
+            uint32_t sub_channel;
+            if (radio_metadata_get_channel(halEvent->metadata, &channel, &sub_channel) == 0) {
+                Utils::convertMetaDataFromHal(metadata, halEvent->metadata);
+                mCallback->newMetadata(channel, sub_channel, metadata);
+            }
+            } break;
+        case RADIO_EVENT_TA:
+            mCallback->trafficAnnouncement(halEvent->on);
+            break;
+        case RADIO_EVENT_AF_SWITCH:
+            Utils::convertProgramInfoFromHal(&info, &halEvent->info, true);
+            mCallback->afSwitch(info);
+            break;
+        case RADIO_EVENT_EA:
+            mCallback->emergencyAnnouncement(halEvent->on);
+            break;
+        case RADIO_EVENT_HW_FAILURE:
+        default:
+            mCallback->hardwareFailure();
+            break;
+        }
+    }
+}
+
+//static
+void Tuner::callback(radio_hal_event_t *halEvent, void *cookie)
+{
+    wp<Tuner> weak(reinterpret_cast<Tuner*>(cookie));
+    sp<Tuner> tuner = weak.promote();
+    if (tuner == 0) return;
+    tuner->onCallback(halEvent);
+}
+
+Tuner::Tuner(const sp<ITunerCallback>& callback, const wp<BroadcastRadio>& parentDevice)
+    : mHalTuner(NULL), mCallback(callback), mParentDevice(parentDevice)
+{
+    ALOGV("%s", __FUNCTION__);
+}
+
+
+Tuner::~Tuner()
+{
+    ALOGV("%s", __FUNCTION__);
+    const sp<BroadcastRadio> parentDevice = mParentDevice.promote();
+    if (parentDevice != 0) {
+        parentDevice->closeHalTuner(mHalTuner);
+    }
+}
+
+// Methods from ::android::hardware::broadcastradio::V1_0::ITuner follow.
+Return<Result> Tuner::setConfiguration(const BandConfig& config)  {
+    ALOGV("%s", __FUNCTION__);
+    if (mHalTuner == NULL) {
+        return Utils::convertHalResult(-ENODEV);
+    }
+    radio_hal_band_config_t halConfig;
+    Utils::convertBandConfigToHal(&halConfig, &config);
+    int rc = mHalTuner->set_configuration(mHalTuner, &halConfig);
+    return Utils::convertHalResult(rc);
+}
+
+Return<void> Tuner::getConfiguration(getConfiguration_cb _hidl_cb)  {
+    int rc;
+    radio_hal_band_config_t halConfig;
+    BandConfig config;
+
+    ALOGV("%s", __FUNCTION__);
+    if (mHalTuner == NULL) {
+        rc = -ENODEV;
+        goto exit;
+    }
+    rc = mHalTuner->get_configuration(mHalTuner, &halConfig);
+    if (rc == 0) {
+        Utils::convertBandConfigFromHal(&config, &halConfig);
+    }
+
+exit:
+    _hidl_cb(Utils::convertHalResult(rc), config);
+    return Void();
+}
+
+Return<Result> Tuner::scan(Direction direction, bool skipSubChannel)  {
+    if (mHalTuner == NULL) {
+        return Utils::convertHalResult(-ENODEV);
+    }
+    int rc = mHalTuner->scan(mHalTuner, static_cast<radio_direction_t>(direction), skipSubChannel);
+    return Utils::convertHalResult(rc);
+}
+
+Return<Result> Tuner::step(Direction direction, bool skipSubChannel)  {
+    if (mHalTuner == NULL) {
+        return Utils::convertHalResult(-ENODEV);
+    }
+    int rc = mHalTuner->step(mHalTuner, static_cast<radio_direction_t>(direction), skipSubChannel);
+    return Utils::convertHalResult(rc);
+}
+
+Return<Result> Tuner::tune(uint32_t channel, uint32_t subChannel)  {
+    if (mHalTuner == NULL) {
+        return Utils::convertHalResult(-ENODEV);
+    }
+    int rc = mHalTuner->tune(mHalTuner, channel, subChannel);
+    return Utils::convertHalResult(rc);
+}
+
+Return<Result> Tuner::cancel()  {
+    if (mHalTuner == NULL) {
+        return Utils::convertHalResult(-ENODEV);
+    }
+    int rc = mHalTuner->cancel(mHalTuner);
+    return Utils::convertHalResult(rc);
+}
+
+Return<void> Tuner::getProgramInformation(bool withMetadata, getProgramInformation_cb _hidl_cb)  {
+    int rc;
+    radio_program_info_t halInfo;
+    ProgramInfo info;
+
+    ALOGV("%s", __FUNCTION__);
+    if (mHalTuner == NULL) {
+        rc = -ENODEV;
+        goto exit;
+    }
+    if (withMetadata) {
+        radio_metadata_allocate(&halInfo.metadata, 0, 0);
+    } else {
+        halInfo.metadata = NULL;
+    }
+    rc = mHalTuner->get_program_information(mHalTuner, &halInfo);
+    if (rc == 0) {
+        Utils::convertProgramInfoFromHal(&info, &halInfo, withMetadata);
+    }
+    if (withMetadata) {
+        radio_metadata_deallocate(halInfo.metadata);
+    }
+
+exit:
+    _hidl_cb(Utils::convertHalResult(rc), info);
+    return Void();
+}
+
+} // namespace implementation
+}  // namespace V1_0
+}  // namespace broadcastradio
+}  // namespace hardware
+}  // namespace android