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Commit dedc86dc authored by Eric Laurent's avatar Eric Laurent
Browse files

radio client 

Added implementation of native broadcast radio
client class and callback.

Change-Id: I82478448e32a5b9be5165e7eb53b99b6289884ed
parent d73697b9

include/radio/Radio.h

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+88 −0
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/*

 * Copyright (C) 2015 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.

 */



#ifndef ANDROID_HARDWARE_RADIO_H

#define ANDROID_HARDWARE_RADIO_H



#include <binder/IBinder.h>

#include <utils/threads.h>

#include <radio/RadioCallback.h>

#include <radio/IRadio.h>

#include <radio/IRadioService.h>

#include <radio/IRadioClient.h>

#include <system/radio.h>



namespace android {



class MemoryDealer;



class Radio : public BnRadioClient,

                        public IBinder::DeathRecipient

{

public:



    virtual ~Radio();



    static  status_t listModules(struct radio_properties *properties,

                                 uint32_t *numModules);

    static  sp<Radio> attach(radio_handle_t handle,

                             const struct radio_band_config *config,

                             bool withAudio,

                             const sp<RadioCallback>& callback);





            void detach();



            status_t setConfiguration(const struct radio_band_config *config);



            status_t getConfiguration(struct radio_band_config *config);



            status_t setMute(bool mute);



            status_t getMute(bool *mute);



            status_t step(radio_direction_t direction, bool skipSubChannel);



            status_t scan(radio_direction_t direction, bool skipSubChannel);



            status_t tune(unsigned int channel, unsigned int subChannel);



            status_t cancel();



            status_t getProgramInformation(struct radio_program_info *info);



            status_t hasControl(bool *hasControl);



            // BpRadioClient

            virtual void onEvent(const sp<IMemory>& eventMemory);



            //IBinder::DeathRecipient

            virtual void binderDied(const wp<IBinder>& who);



private:

            Radio(radio_handle_t handle,

                            const sp<RadioCallback>&);

            static const sp<IRadioService>& getRadioService();



            Mutex                   mLock;

            sp<IRadio>              mIRadio;

            const radio_handle_t    mHandle;

            sp<RadioCallback>       mCallback;

};



}; // namespace android



#endif //ANDROID_HARDWARE_RADIO_H

include/radio/RadioCallback.h

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/*

 * Copyright (C) 2015 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.

 */



#ifndef ANDROID_HARDWARE_RADIO_CALLBACK_H

#define ANDROID_HARDWARE_RADIO_CALLBACK_H



#include <utils/RefBase.h>

#include <system/radio.h>



namespace android {



class RadioCallback : public RefBase

{

public:



            RadioCallback() {}

    virtual ~RadioCallback() {}



    virtual void onEvent(struct radio_event *event) = 0;



};



}; // namespace android



#endif //ANDROID_HARDWARE_RADIO_CALLBACK_H

radio/Android.mk

+1 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ LOCAL_PATH:= $(call my-dir) 
include $(CLEAR_VARS)



LOCAL_SRC_FILES:= \

	Radio.cpp \

	IRadio.cpp \

	IRadioClient.cpp \

	IRadioService.cpp

radio/Radio.cpp

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/*

**

** Copyright (C) 2015, 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 "Radio"

//#define LOG_NDEBUG 0



#include <utils/Log.h>

#include <utils/threads.h>

#include <binder/IPCThreadState.h>

#include <binder/IServiceManager.h>

#include <binder/IMemory.h>



#include <radio/Radio.h>

#include <radio/IRadio.h>

#include <radio/IRadioService.h>

#include <radio/IRadioClient.h>

#include <radio/RadioCallback.h>



namespace android {



namespace {

    sp<IRadioService>          gRadioService;

    const int                  kRadioServicePollDelay = 500000; // 0.5s

    const char*                kRadioServiceName      = "media.radio";

    Mutex                      gLock;



    class DeathNotifier : public IBinder::DeathRecipient

    {

    public:

        DeathNotifier() {

        }



        virtual void binderDied(const wp<IBinder>& who __unused) {

            ALOGV("binderDied");

            Mutex::Autolock _l(gLock);

            gRadioService.clear();

            ALOGW("Radio service died!");

        }

    };



    sp<DeathNotifier>         gDeathNotifier;

}; // namespace anonymous



const sp<IRadioService>& Radio::getRadioService()

{

    Mutex::Autolock _l(gLock);

    if (gRadioService.get() == 0) {

        sp<IServiceManager> sm = defaultServiceManager();

        sp<IBinder> binder;

        do {

            binder = sm->getService(String16(kRadioServiceName));

            if (binder != 0) {

                break;

            }

            ALOGW("RadioService not published, waiting...");

            usleep(kRadioServicePollDelay);

        } while(true);

        if (gDeathNotifier == NULL) {

            gDeathNotifier = new DeathNotifier();

        }

        binder->linkToDeath(gDeathNotifier);

        gRadioService = interface_cast<IRadioService>(binder);

    }

    ALOGE_IF(gRadioService == 0, "no RadioService!?");

    return gRadioService;

}



// Static methods

status_t Radio::listModules(struct radio_properties *properties,

                            uint32_t *numModules)

{

    ALOGV("listModules()");

    const sp<IRadioService>& service = getRadioService();

    if (service == 0) {

        return NO_INIT;

    }

    return service->listModules(properties, numModules);

}



sp<Radio> Radio::attach(radio_handle_t handle,

                        const struct radio_band_config *config,

                        bool withAudio,

                        const sp<RadioCallback>& callback)

{

    ALOGV("attach()");

    sp<Radio> radio;

    const sp<IRadioService>& service = getRadioService();

    if (service == 0) {

        return radio;

    }

    radio = new Radio(handle, callback);

    status_t status = service->attach(handle, radio, config, withAudio, radio->mIRadio);



    if (status == NO_ERROR && radio->mIRadio != 0) {

        IInterface::asBinder(radio->mIRadio)->linkToDeath(radio);

    } else {

        ALOGW("Error %d connecting to radio service", status);

        radio.clear();

    }

    return radio;

}







// Radio

Radio::Radio(radio_handle_t handle, const sp<RadioCallback>& callback)

    : mHandle(handle), mCallback(callback)

{

}



Radio::~Radio()

{

    if (mIRadio != 0) {

        mIRadio->detach();

    }

}





void Radio::detach() {

    ALOGV("detach()");

    Mutex::Autolock _l(mLock);

    mCallback.clear();

    if (mIRadio != 0) {

        mIRadio->detach();

        IInterface::asBinder(mIRadio)->unlinkToDeath(this);

        mIRadio = 0;

    }

}



status_t Radio::setConfiguration(const struct radio_band_config *config)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->setConfiguration(config);

}



status_t Radio::getConfiguration(struct radio_band_config *config)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->getConfiguration(config);

}



status_t Radio::setMute(bool mute)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->setMute(mute);

}



status_t Radio::getMute(bool *mute)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->getMute(mute);

}



status_t Radio::scan(radio_direction_t direction, bool skipSubchannel)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->scan(direction, skipSubchannel);

}



status_t Radio::step(radio_direction_t direction, bool skipSubchannel)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->step(direction, skipSubchannel);

}



status_t Radio::tune(unsigned int channel, unsigned int subChannel)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->tune(channel, subChannel);

}



status_t Radio::cancel()

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->cancel();

}



status_t Radio::getProgramInformation(struct radio_program_info *info)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->getProgramInformation(info);

}



status_t Radio::hasControl(bool *hasControl)

{

    Mutex::Autolock _l(mLock);

    if (mIRadio == 0) {

        return NO_INIT;

    }

    return mIRadio->hasControl(hasControl);

}





// BpRadioClient

void Radio::onEvent(const sp<IMemory>& eventMemory)

{

    Mutex::Autolock _l(mLock);

    if (eventMemory == 0 || eventMemory->pointer() == NULL) {

        return;

    }



    struct radio_event *event = (struct radio_event *)eventMemory->pointer();

    // restore local metadata pointer from offset

    switch (event->type) {

    case RADIO_EVENT_TUNED:

    case RADIO_EVENT_AF_SWITCH:

        if (event->info.metadata != NULL) {

            event->info.metadata =

                    (radio_metadata_t *)((char *)event + (size_t)event->info.metadata);

        }

        break;

    case RADIO_EVENT_METADATA:

        if (event->metadata != NULL) {

            event->metadata =

                    (radio_metadata_t *)((char *)event + (size_t)event->metadata);

        }

        break;

    default:

        break;

    }



    if (mCallback != 0) {

        mCallback->onEvent(event);

    }

}





//IBinder::DeathRecipient

void Radio::binderDied(const wp<IBinder>& who __unused) {

    Mutex::Autolock _l(mLock);

    ALOGW("Radio server binder Died ");

    mIRadio = 0;

    struct radio_event event;

    memset(&event, 0, sizeof(struct radio_event));

    event.type = RADIO_EVENT_SERVER_DIED;

    event.status = DEAD_OBJECT;

    if (mCallback != 0) {

        mCallback->onEvent(&event);

    }

}



}; // namespace android