blob: 3c04fb0ab2e2c5185a8c038d1070fa376684f702 [file] [log] [blame]
/*
**
** 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