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

This reverts commit 2c2df013b25bd96976af82db7e6f3480f0571c6e.
diff --git a/broadcastradio/1.0/default/BroadcastRadio.cpp b/broadcastradio/1.0/default/BroadcastRadio.cpp
new file mode 100644
index 0000000..b97b609
--- /dev/null
+++ b/broadcastradio/1.0/default/BroadcastRadio.cpp
@@ -0,0 +1,141 @@
+/*
+ * 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 "BroadcastRadio"
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+#include <hardware/radio.h>
+
+#include "BroadcastRadio.h"
+#include "Tuner.h"
+#include "Utils.h"
+
+namespace android {
+namespace hardware {
+namespace broadcastradio {
+namespace V1_0 {
+namespace implementation {
+
+BroadcastRadio::BroadcastRadio(Class classId)
+    : mStatus(Result::NOT_INITIALIZED), mClassId(classId), mHwDevice(NULL)
+{
+}
+
+BroadcastRadio::~BroadcastRadio()
+{
+    if (mHwDevice != NULL) {
+        radio_hw_device_close(mHwDevice);
+    }
+}
+
+void BroadcastRadio::onFirstRef()
+{
+    const hw_module_t *mod;
+    int rc;
+    ALOGI("%s mClassId %d", __FUNCTION__, mClassId);
+
+    mHwDevice = NULL;
+    const char *classString = Utils::getClassString(mClassId);
+    if (classString == NULL) {
+        ALOGE("invalid class ID %d", mClassId);
+        mStatus = Result::INVALID_ARGUMENTS;
+        return;
+    }
+
+    ALOGI("%s RADIO_HARDWARE_MODULE_ID %s %s",
+          __FUNCTION__, RADIO_HARDWARE_MODULE_ID, classString);
+
+    rc = hw_get_module_by_class(RADIO_HARDWARE_MODULE_ID, classString, &mod);
+    if (rc != 0) {
+        ALOGE("couldn't load radio module %s.%s (%s)",
+              RADIO_HARDWARE_MODULE_ID, classString, strerror(-rc));
+        return;
+    }
+    rc = radio_hw_device_open(mod, &mHwDevice);
+    if (rc != 0) {
+        ALOGE("couldn't open radio hw device in %s.%s (%s)",
+              RADIO_HARDWARE_MODULE_ID, "primary", strerror(-rc));
+        mHwDevice = NULL;
+        return;
+    }
+    if (mHwDevice->common.version != RADIO_DEVICE_API_VERSION_CURRENT) {
+        ALOGE("wrong radio hw device version %04x", mHwDevice->common.version);
+        radio_hw_device_close(mHwDevice);
+        mHwDevice = NULL;
+    } else {
+        mStatus = Result::OK;
+    }
+}
+
+int BroadcastRadio::closeHalTuner(const struct radio_tuner *halTuner)
+{
+    ALOGV("%s", __FUNCTION__);
+    if (mHwDevice == NULL) {
+        return -ENODEV;
+    }
+    if (halTuner == 0) {
+        return -EINVAL;
+    }
+    return mHwDevice->close_tuner(mHwDevice, halTuner);
+}
+
+
+// Methods from ::android::hardware::broadcastradio::V1_0::IBroadcastRadio follow.
+Return<void> BroadcastRadio::getProperties(getProperties_cb _hidl_cb)
+{
+    int rc;
+    radio_hal_properties_t halProperties;
+    Properties properties;
+
+    if (mHwDevice == NULL) {
+        rc = -ENODEV;
+        goto exit;
+    }
+    rc = mHwDevice->get_properties(mHwDevice, &halProperties);
+    if (rc == 0) {
+        Utils::convertPropertiesFromHal(&properties, &halProperties);
+    }
+
+exit:
+    _hidl_cb(Utils::convertHalResult(rc), properties);
+    return Void();
+}
+
+Return<void> BroadcastRadio::openTuner(const BandConfig& config, bool audio,
+                                       const sp<ITunerCallback>& callback, openTuner_cb _hidl_cb)
+{
+    sp<Tuner> tunerImpl = new Tuner(callback, this);
+
+    radio_hal_band_config_t halConfig;
+    const struct radio_tuner *halTuner;
+    Utils::convertBandConfigToHal(&halConfig, &config);
+    int rc = mHwDevice->open_tuner(mHwDevice, &halConfig, audio,
+                                   Tuner::callback, tunerImpl.get(),
+                                   &halTuner);
+    if (rc == 0) {
+        tunerImpl->setHalTuner(halTuner);
+    }
+
+    _hidl_cb(Utils::convertHalResult(rc), tunerImpl);
+    return Void();
+}
+
+
+} // namespace implementation
+}  // namespace V1_0
+}  // namespace broadcastradio
+}  // namespace hardware
+}  // namespace android