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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 #define LOG_TAG "BroadcastRadio"
     17 //#define LOG_NDEBUG 0
     18 
     19 #include <log/log.h>
     20 
     21 #include <hardware/radio.h>
     22 
     23 #include "BroadcastRadio.h"
     24 #include "Tuner.h"
     25 #include "Utils.h"
     26 
     27 namespace android {
     28 namespace hardware {
     29 namespace broadcastradio {
     30 namespace V1_0 {
     31 namespace implementation {
     32 
     33 BroadcastRadio::BroadcastRadio(Class classId)
     34     : mStatus(Result::NOT_INITIALIZED), mClassId(classId), mHwDevice(NULL)
     35 {
     36 }
     37 
     38 BroadcastRadio::~BroadcastRadio()
     39 {
     40     if (mHwDevice != NULL) {
     41         radio_hw_device_close(mHwDevice);
     42     }
     43 }
     44 
     45 void BroadcastRadio::onFirstRef()
     46 {
     47     const hw_module_t *mod;
     48     int rc;
     49     ALOGI("%s mClassId %d", __FUNCTION__, mClassId);
     50 
     51     mHwDevice = NULL;
     52     const char *classString = Utils::getClassString(mClassId);
     53     if (classString == NULL) {
     54         ALOGE("invalid class ID %d", mClassId);
     55         mStatus = Result::INVALID_ARGUMENTS;
     56         return;
     57     }
     58 
     59     ALOGI("%s RADIO_HARDWARE_MODULE_ID %s %s",
     60           __FUNCTION__, RADIO_HARDWARE_MODULE_ID, classString);
     61 
     62     rc = hw_get_module_by_class(RADIO_HARDWARE_MODULE_ID, classString, &mod);
     63     if (rc != 0) {
     64         ALOGE("couldn't load radio module %s.%s (%s)",
     65               RADIO_HARDWARE_MODULE_ID, classString, strerror(-rc));
     66         mStatus = Result::INVALID_ARGUMENTS;
     67         return;
     68     }
     69     rc = radio_hw_device_open(mod, &mHwDevice);
     70     if (rc != 0) {
     71         ALOGE("couldn't open radio hw device in %s.%s (%s)",
     72               RADIO_HARDWARE_MODULE_ID, "primary", strerror(-rc));
     73         mHwDevice = NULL;
     74         return;
     75     }
     76     if (mHwDevice->common.version != RADIO_DEVICE_API_VERSION_CURRENT) {
     77         ALOGE("wrong radio hw device version %04x", mHwDevice->common.version);
     78         radio_hw_device_close(mHwDevice);
     79         mHwDevice = NULL;
     80     } else {
     81         mStatus = Result::OK;
     82     }
     83 }
     84 
     85 int BroadcastRadio::closeHalTuner(const struct radio_tuner *halTuner)
     86 {
     87     ALOGV("%s", __FUNCTION__);
     88     if (mHwDevice == NULL) {
     89         return -ENODEV;
     90     }
     91     if (halTuner == 0) {
     92         return -EINVAL;
     93     }
     94     return mHwDevice->close_tuner(mHwDevice, halTuner);
     95 }
     96 
     97 
     98 // Methods from ::android::hardware::broadcastradio::V1_0::IBroadcastRadio follow.
     99 Return<void> BroadcastRadio::getProperties(getProperties_cb _hidl_cb)
    100 {
    101     int rc;
    102     radio_hal_properties_t halProperties;
    103     Properties properties;
    104 
    105     if (mHwDevice == NULL) {
    106         rc = -ENODEV;
    107         goto exit;
    108     }
    109     rc = mHwDevice->get_properties(mHwDevice, &halProperties);
    110     if (rc == 0) {
    111         Utils::convertPropertiesFromHal(&properties, &halProperties);
    112     }
    113 
    114 exit:
    115     _hidl_cb(Utils::convertHalResult(rc), properties);
    116     return Void();
    117 }
    118 
    119 Return<void> BroadcastRadio::openTuner(const BandConfig& config, bool audio,
    120                                        const sp<ITunerCallback>& callback, openTuner_cb _hidl_cb)
    121 {
    122     sp<Tuner> tunerImpl = new Tuner(callback, this);
    123 
    124     radio_hal_band_config_t halConfig;
    125     const struct radio_tuner *halTuner;
    126     Utils::convertBandConfigToHal(&halConfig, &config);
    127     int rc = mHwDevice->open_tuner(mHwDevice, &halConfig, audio,
    128                                    Tuner::callback, tunerImpl.get(),
    129                                    &halTuner);
    130     if (rc == 0) {
    131         tunerImpl->setHalTuner(halTuner);
    132     }
    133 
    134     _hidl_cb(Utils::convertHalResult(rc), tunerImpl);
    135     return Void();
    136 }
    137 
    138 
    139 } // namespace implementation
    140 }  // namespace V1_0
    141 }  // namespace broadcastradio
    142 }  // namespace hardware
    143 }  // namespace android
    144