1/*
2 * Copyright (C) 2015 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
17#define LOG_TAG "RadioService"
18//#define LOG_NDEBUG 0
19
20#include <stdio.h>
21#include <string.h>
22#include <sys/types.h>
23#include <pthread.h>
24
25#include <system/audio.h>
26#include <system/audio_policy.h>
27#include <system/radio.h>
28#include <system/radio_metadata.h>
29#include <cutils/atomic.h>
30#include <cutils/properties.h>
31#include <hardware/hardware.h>
32#include <utils/Errors.h>
33#include <utils/Log.h>
34#include <binder/IServiceManager.h>
35#include <binder/MemoryBase.h>
36#include <binder/MemoryHeapBase.h>
37#include <hardware/radio.h>
38#include <media/AudioSystem.h>
39#include "RadioService.h"
40#include "RadioRegions.h"
41
42namespace android {
43
44static const char kRadioTunerAudioDeviceName[] = "Radio tuner source";
45
46RadioService::RadioService()
47    : BnRadioService(), mNextUniqueId(1)
48{
49    ALOGI("%s", __FUNCTION__);
50}
51
52void RadioService::onFirstRef()
53{
54    const hw_module_t *mod;
55    int rc;
56    struct radio_hw_device *dev;
57
58    ALOGI("%s", __FUNCTION__);
59
60    rc = hw_get_module_by_class(RADIO_HARDWARE_MODULE_ID, RADIO_HARDWARE_MODULE_ID_FM, &mod);
61    if (rc != 0) {
62        ALOGE("couldn't load radio module %s.%s (%s)",
63              RADIO_HARDWARE_MODULE_ID, "primary", strerror(-rc));
64        return;
65    }
66    rc = radio_hw_device_open(mod, &dev);
67    if (rc != 0) {
68        ALOGE("couldn't open radio hw device in %s.%s (%s)",
69              RADIO_HARDWARE_MODULE_ID, "primary", strerror(-rc));
70        return;
71    }
72    if (dev->common.version != RADIO_DEVICE_API_VERSION_CURRENT) {
73        ALOGE("wrong radio hw device version %04x", dev->common.version);
74        return;
75    }
76
77    struct radio_hal_properties halProperties;
78    rc = dev->get_properties(dev, &halProperties);
79    if (rc != 0) {
80        ALOGE("could not read implementation properties");
81        return;
82    }
83
84    radio_properties_t properties;
85    properties.handle =
86            (radio_handle_t)android_atomic_inc(&mNextUniqueId);
87
88    ALOGI("loaded default module %s, handle %d", properties.product, properties.handle);
89
90    convertProperties(&properties, &halProperties);
91    sp<Module> module = new Module(dev, properties);
92    mModules.add(properties.handle, module);
93}
94
95RadioService::~RadioService()
96{
97    for (size_t i = 0; i < mModules.size(); i++) {
98        radio_hw_device_close(mModules.valueAt(i)->hwDevice());
99    }
100}
101
102status_t RadioService::listModules(struct radio_properties *properties,
103                             uint32_t *numModules)
104{
105    ALOGV("listModules");
106
107    AutoMutex lock(mServiceLock);
108    if (numModules == NULL || (*numModules != 0 && properties == NULL)) {
109        return BAD_VALUE;
110    }
111    size_t maxModules = *numModules;
112    *numModules = mModules.size();
113    for (size_t i = 0; i < mModules.size() && i < maxModules; i++) {
114        properties[i] = mModules.valueAt(i)->properties();
115    }
116    return NO_ERROR;
117}
118
119status_t RadioService::attach(radio_handle_t handle,
120                        const sp<IRadioClient>& client,
121                        const struct radio_band_config *config,
122                        bool withAudio,
123                        sp<IRadio>& radio)
124{
125    ALOGV("%s %d config %p withAudio %d", __FUNCTION__, handle, config, withAudio);
126
127    AutoMutex lock(mServiceLock);
128    radio.clear();
129    if (client == 0) {
130        return BAD_VALUE;
131    }
132    ssize_t index = mModules.indexOfKey(handle);
133    if (index < 0) {
134        return BAD_VALUE;
135    }
136    sp<Module> module = mModules.valueAt(index);
137
138    if (config == NULL) {
139        config = module->getDefaultConfig();
140        if (config == NULL) {
141            return INVALID_OPERATION;
142        }
143    }
144    ALOGV("%s region %d type %d", __FUNCTION__, config->region, config->band.type);
145
146    radio = module->addClient(client, config, withAudio);
147
148    if (radio == 0) {
149        return NO_INIT;
150    }
151    return NO_ERROR;
152}
153
154
155static const int kDumpLockRetries = 50;
156static const int kDumpLockSleep = 60000;
157
158static bool tryLock(Mutex& mutex)
159{
160    bool locked = false;
161    for (int i = 0; i < kDumpLockRetries; ++i) {
162        if (mutex.tryLock() == NO_ERROR) {
163            locked = true;
164            break;
165        }
166        usleep(kDumpLockSleep);
167    }
168    return locked;
169}
170
171status_t RadioService::dump(int fd, const Vector<String16>& args __unused) {
172    String8 result;
173    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
174        result.appendFormat("Permission Denial: can't dump RadioService");
175        write(fd, result.string(), result.size());
176    } else {
177        bool locked = tryLock(mServiceLock);
178        // failed to lock - RadioService is probably deadlocked
179        if (!locked) {
180            result.append("RadioService may be deadlocked\n");
181            write(fd, result.string(), result.size());
182        }
183
184        if (locked) mServiceLock.unlock();
185    }
186    return NO_ERROR;
187}
188
189status_t RadioService::onTransact(
190    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
191    return BnRadioService::onTransact(code, data, reply, flags);
192}
193
194
195// static
196void RadioService::callback(radio_hal_event_t *halEvent, void *cookie)
197{
198    CallbackThread *callbackThread = (CallbackThread *)cookie;
199    if (callbackThread == NULL) {
200        return;
201    }
202    callbackThread->sendEvent(halEvent);
203}
204
205/* static */
206void RadioService::convertProperties(radio_properties_t *properties,
207                                     const radio_hal_properties_t *halProperties)
208{
209    memset(properties, 0, sizeof(struct radio_properties));
210    properties->class_id = halProperties->class_id;
211    strlcpy(properties->implementor, halProperties->implementor,
212            RADIO_STRING_LEN_MAX);
213    strlcpy(properties->product, halProperties->product,
214            RADIO_STRING_LEN_MAX);
215    strlcpy(properties->version, halProperties->version,
216            RADIO_STRING_LEN_MAX);
217    strlcpy(properties->serial, halProperties->serial,
218            RADIO_STRING_LEN_MAX);
219    properties->num_tuners = halProperties->num_tuners;
220    properties->num_audio_sources = halProperties->num_audio_sources;
221    properties->supports_capture = halProperties->supports_capture;
222
223    for (size_t i = 0; i < ARRAY_SIZE(sKnownRegionConfigs); i++) {
224        const radio_hal_band_config_t *band = &sKnownRegionConfigs[i].band;
225        size_t j;
226        for (j = 0; j < halProperties->num_bands; j++) {
227            const radio_hal_band_config_t *halBand = &halProperties->bands[j];
228            size_t k;
229            if (band->type != halBand->type) continue;
230            if (band->lower_limit < halBand->lower_limit) continue;
231            if (band->upper_limit > halBand->upper_limit) continue;
232            for (k = 0; k < halBand->num_spacings; k++) {
233                if (band->spacings[0] == halBand->spacings[k]) break;
234            }
235            if (k == halBand->num_spacings) continue;
236            if (band->type == RADIO_BAND_AM) break;
237            if ((band->fm.deemphasis & halBand->fm.deemphasis) == 0) continue;
238            if (halBand->fm.rds == 0) break;
239            if ((band->fm.rds & halBand->fm.rds) != 0) break;
240        }
241        if (j == halProperties->num_bands) continue;
242
243        ALOGI("convertProperties() Adding band type %d region %d",
244              sKnownRegionConfigs[i].band.type , sKnownRegionConfigs[i].region);
245
246        memcpy(&properties->bands[properties->num_bands++],
247               &sKnownRegionConfigs[i],
248               sizeof(radio_band_config_t));
249    }
250}
251
252#undef LOG_TAG
253#define LOG_TAG "RadioService::CallbackThread"
254
255RadioService::CallbackThread::CallbackThread(const wp<ModuleClient>& moduleClient)
256    : mModuleClient(moduleClient), mMemoryDealer(new MemoryDealer(1024 * 1024, "RadioService"))
257{
258}
259
260RadioService::CallbackThread::~CallbackThread()
261{
262    mEventQueue.clear();
263}
264
265void RadioService::CallbackThread::onFirstRef()
266{
267    run("RadioService cbk", ANDROID_PRIORITY_URGENT_AUDIO);
268}
269
270bool RadioService::CallbackThread::threadLoop()
271{
272    while (!exitPending()) {
273        sp<IMemory> eventMemory;
274        sp<ModuleClient> moduleClient;
275        {
276            Mutex::Autolock _l(mCallbackLock);
277            while (mEventQueue.isEmpty() && !exitPending()) {
278                ALOGV("CallbackThread::threadLoop() sleep");
279                mCallbackCond.wait(mCallbackLock);
280                ALOGV("CallbackThread::threadLoop() wake up");
281            }
282            if (exitPending()) {
283                break;
284            }
285            eventMemory = mEventQueue[0];
286            mEventQueue.removeAt(0);
287            moduleClient = mModuleClient.promote();
288        }
289        if (moduleClient != 0) {
290            moduleClient->onCallbackEvent(eventMemory);
291            eventMemory.clear();
292        }
293    }
294    return false;
295}
296
297void RadioService::CallbackThread::exit()
298{
299    Mutex::Autolock _l(mCallbackLock);
300    requestExit();
301    mCallbackCond.broadcast();
302}
303
304sp<IMemory> RadioService::CallbackThread::prepareEvent(radio_hal_event_t *halEvent)
305{
306    sp<IMemory> eventMemory;
307
308    size_t headerSize =
309            (sizeof(struct radio_event) + sizeof(unsigned int) - 1) /sizeof(unsigned int);
310    size_t metadataSize = 0;
311    switch (halEvent->type) {
312    case RADIO_EVENT_TUNED:
313    case RADIO_EVENT_AF_SWITCH:
314        if (radio_metadata_check(halEvent->info.metadata) == 0) {
315            metadataSize = radio_metadata_get_size(halEvent->info.metadata);
316        }
317        break;
318    case RADIO_EVENT_METADATA:
319        if (radio_metadata_check(halEvent->metadata) != 0) {
320            return eventMemory;
321        }
322        metadataSize = radio_metadata_get_size(halEvent->metadata);
323        break;
324    default:
325        break;
326    }
327    size_t size = headerSize + metadataSize;
328    eventMemory = mMemoryDealer->allocate(size);
329    if (eventMemory == 0 || eventMemory->pointer() == NULL) {
330        eventMemory.clear();
331        return eventMemory;
332    }
333    struct radio_event *event = (struct radio_event *)eventMemory->pointer();
334    event->type = halEvent->type;
335    event->status = halEvent->status;
336
337    switch (event->type) {
338    case RADIO_EVENT_CONFIG:
339        event->config.band = halEvent->config;
340        break;
341    case RADIO_EVENT_TUNED:
342    case RADIO_EVENT_AF_SWITCH:
343        event->info = halEvent->info;
344        if (metadataSize != 0) {
345            memcpy((char *)event + headerSize, halEvent->info.metadata, metadataSize);
346            // replace meta data pointer by offset while in shared memory so that receiving side
347            // can restore the pointer in destination process.
348            event->info.metadata = (radio_metadata_t *)headerSize;
349        }
350        break;
351    case RADIO_EVENT_TA:
352    case RADIO_EVENT_ANTENNA:
353    case RADIO_EVENT_CONTROL:
354        event->on = halEvent->on;
355        break;
356    case RADIO_EVENT_METADATA:
357        memcpy((char *)event + headerSize, halEvent->metadata, metadataSize);
358        // replace meta data pointer by offset while in shared memory so that receiving side
359        // can restore the pointer in destination process.
360        event->metadata = (radio_metadata_t *)headerSize;
361        break;
362    case RADIO_EVENT_HW_FAILURE:
363    default:
364        break;
365    }
366
367    return eventMemory;
368}
369
370void RadioService::CallbackThread::sendEvent(radio_hal_event_t *event)
371 {
372     sp<IMemory> eventMemory = prepareEvent(event);
373     if (eventMemory == 0) {
374         return;
375     }
376
377     AutoMutex lock(mCallbackLock);
378     mEventQueue.add(eventMemory);
379     mCallbackCond.signal();
380     ALOGV("%s DONE", __FUNCTION__);
381}
382
383
384#undef LOG_TAG
385#define LOG_TAG "RadioService::Module"
386
387RadioService::Module::Module(radio_hw_device* hwDevice, radio_properties properties)
388 : mHwDevice(hwDevice), mProperties(properties), mMute(true)
389{
390}
391
392RadioService::Module::~Module() {
393    mModuleClients.clear();
394}
395
396status_t RadioService::Module::dump(int fd __unused, const Vector<String16>& args __unused) {
397    String8 result;
398    return NO_ERROR;
399}
400
401sp<RadioService::ModuleClient> RadioService::Module::addClient(const sp<IRadioClient>& client,
402                                    const struct radio_band_config *config,
403                                    bool audio)
404{
405    ALOGV("addClient() %p config %p product %s", this, config, mProperties.product);
406    AutoMutex lock(mLock);
407    sp<ModuleClient> moduleClient;
408    int ret;
409
410    for (size_t i = 0; i < mModuleClients.size(); i++) {
411        if (mModuleClients[i]->client() == client) {
412            // client already connected: reject
413            return moduleClient;
414        }
415    }
416    moduleClient = new ModuleClient(this, client, config, audio);
417
418    struct radio_hal_band_config halConfig;
419    halConfig = config->band;
420
421    // Tuner preemption logic:
422    // There is a limited amount of tuners and a limited amount of radio audio sources per module.
423    // The minimum is one tuner and one audio source.
424    // The numbers of tuners and sources are indicated in the module properties.
425    // NOTE: current framework implementation only supports one radio audio source.
426    // It is possible to open more than one tuner at a time but only one tuner can be connected
427    // to the radio audio source (AUDIO_DEVICE_IN_FM_TUNER).
428    // The base rule is that a newly connected tuner always wins, i.e. always gets a tuner
429    // and can use the audio source if requested.
430    // If another client is preempted, it is notified by a callback with RADIO_EVENT_CONTROL
431    // indicating loss of control.
432    // - If the newly connected client requests the audio source (audio == true):
433    //    - if an audio source is available
434    //          no problem
435    //    - if not:
436    //          the oldest client in the list using audio is preempted.
437    // - If the newly connected client does not request the audio source (audio == false):
438    //    - if a tuner is available
439    //          no problem
440    //    - if not:
441    //          The oldest client not using audio is preempted first and if none is found the
442    //          the oldest client using audio is preempted.
443    // Each time a tuner using the audio source is opened or closed, the audio policy manager is
444    // notified of the connection or disconnection of AUDIO_DEVICE_IN_FM_TUNER.
445
446    sp<ModuleClient> oldestTuner;
447    sp<ModuleClient> oldestAudio;
448    size_t allocatedTuners = 0;
449    size_t allocatedAudio = 0;
450    for (size_t i = 0; i < mModuleClients.size(); i++) {
451        if (mModuleClients[i]->getTuner() != NULL) {
452            if (mModuleClients[i]->audio()) {
453                if (oldestAudio == 0) {
454                    oldestAudio = mModuleClients[i];
455                }
456                allocatedAudio++;
457            } else {
458                if (oldestTuner == 0) {
459                    oldestTuner = mModuleClients[i];
460                }
461                allocatedTuners++;
462            }
463        }
464    }
465
466    const struct radio_tuner *halTuner;
467    sp<ModuleClient> preemtedClient;
468    if (audio) {
469        if (allocatedAudio >= mProperties.num_audio_sources) {
470            ALOG_ASSERT(oldestAudio != 0, "addClient() allocatedAudio/oldestAudio mismatch");
471            preemtedClient = oldestAudio;
472        }
473    } else {
474        if (allocatedAudio + allocatedTuners >= mProperties.num_tuners) {
475            if (allocatedTuners != 0) {
476                ALOG_ASSERT(oldestTuner != 0, "addClient() allocatedTuners/oldestTuner mismatch");
477                preemtedClient = oldestTuner;
478            } else {
479                ALOG_ASSERT(oldestAudio != 0, "addClient() allocatedAudio/oldestAudio mismatch");
480                preemtedClient = oldestAudio;
481            }
482        }
483    }
484    if (preemtedClient != 0) {
485        halTuner = preemtedClient->getTuner();
486        preemtedClient->setTuner(NULL);
487        mHwDevice->close_tuner(mHwDevice, halTuner);
488        if (preemtedClient->audio()) {
489            notifyDeviceConnection(false, "");
490        }
491    }
492
493    ret = mHwDevice->open_tuner(mHwDevice, &halConfig, audio,
494                                RadioService::callback, moduleClient->callbackThread().get(),
495                                &halTuner);
496    if (ret == 0) {
497        ALOGV("addClient() setTuner %p", halTuner);
498        moduleClient->setTuner(halTuner);
499        mModuleClients.add(moduleClient);
500        if (audio) {
501            notifyDeviceConnection(true, "");
502        }
503        ALOGV("addClient() DONE moduleClient %p", moduleClient.get());
504    } else {
505        ALOGW("%s open_tuner failed with error %d", __FUNCTION__, ret);
506        moduleClient.clear();
507    }
508
509    return moduleClient;
510}
511
512void RadioService::Module::removeClient(const sp<ModuleClient>& moduleClient) {
513    ALOGV("removeClient()");
514    AutoMutex lock(mLock);
515    int ret;
516    ssize_t index = -1;
517
518    for (size_t i = 0; i < mModuleClients.size(); i++) {
519        if (mModuleClients[i] == moduleClient) {
520            index = i;
521            break;
522        }
523    }
524    if (index == -1) {
525        return;
526    }
527
528    mModuleClients.removeAt(index);
529    const struct radio_tuner *halTuner = moduleClient->getTuner();
530    if (halTuner == NULL) {
531        return;
532    }
533
534    mHwDevice->close_tuner(mHwDevice, halTuner);
535    if (moduleClient->audio()) {
536        notifyDeviceConnection(false, "");
537    }
538
539    mMute = true;
540
541    if (mModuleClients.isEmpty()) {
542        return;
543    }
544
545    // Tuner reallocation logic:
546    // When a client is removed and was controlling a tuner, this tuner will be allocated to a
547    // previously preempted client. This client will be notified by a callback with
548    // RADIO_EVENT_CONTROL indicating gain of control.
549    // - If a preempted client is waiting for an audio source and one becomes available:
550    //    Allocate the tuner to the most recently added client waiting for an audio source
551    // - If not:
552    //    Allocate the tuner to the most recently added client.
553    // Each time a tuner using the audio source is opened or closed, the audio policy manager is
554    // notified of the connection or disconnection of AUDIO_DEVICE_IN_FM_TUNER.
555
556    sp<ModuleClient> youngestClient;
557    sp<ModuleClient> youngestClientAudio;
558    size_t allocatedTuners = 0;
559    size_t allocatedAudio = 0;
560    for (ssize_t i = mModuleClients.size() - 1; i >= 0; i--) {
561        if (mModuleClients[i]->getTuner() == NULL) {
562            if (mModuleClients[i]->audio()) {
563                if (youngestClientAudio == 0) {
564                    youngestClientAudio = mModuleClients[i];
565                }
566            } else {
567                if (youngestClient == 0) {
568                    youngestClient = mModuleClients[i];
569                }
570            }
571        } else {
572            if (mModuleClients[i]->audio()) {
573                allocatedAudio++;
574            } else {
575                allocatedTuners++;
576            }
577        }
578    }
579
580    ALOG_ASSERT(allocatedTuners + allocatedAudio < mProperties.num_tuners,
581                "removeClient() removed client but no tuner available");
582
583    ALOG_ASSERT(!moduleClient->audio() || allocatedAudio < mProperties.num_audio_sources,
584                "removeClient() removed audio client but no tuner with audio available");
585
586    if (allocatedAudio < mProperties.num_audio_sources && youngestClientAudio != 0) {
587        youngestClient = youngestClientAudio;
588    }
589
590    ALOG_ASSERT(youngestClient != 0, "removeClient() removed client no candidate found for tuner");
591
592    struct radio_hal_band_config halConfig = youngestClient->halConfig();
593    ret = mHwDevice->open_tuner(mHwDevice, &halConfig, youngestClient->audio(),
594                                RadioService::callback, moduleClient->callbackThread().get(),
595                                &halTuner);
596
597    if (ret == 0) {
598        youngestClient->setTuner(halTuner);
599        if (youngestClient->audio()) {
600            notifyDeviceConnection(true, "");
601        }
602    }
603}
604
605status_t RadioService::Module::setMute(bool mute)
606{
607    Mutex::Autolock _l(mLock);
608    if (mute != mMute) {
609        mMute = mute;
610        //TODO notifify audio policy manager of media activity on radio audio device
611    }
612    return NO_ERROR;
613}
614
615status_t RadioService::Module::getMute(bool *mute)
616{
617    Mutex::Autolock _l(mLock);
618    *mute = mMute;
619    return NO_ERROR;
620}
621
622
623const struct radio_band_config *RadioService::Module::getDefaultConfig() const
624{
625    if (mProperties.num_bands == 0) {
626        return NULL;
627    }
628    return &mProperties.bands[0];
629}
630
631void RadioService::Module::notifyDeviceConnection(bool connected,
632                                                  const char *address) {
633    int64_t token = IPCThreadState::self()->clearCallingIdentity();
634    AudioSystem::setDeviceConnectionState(AUDIO_DEVICE_IN_FM_TUNER,
635                                          connected ? AUDIO_POLICY_DEVICE_STATE_AVAILABLE :
636                                                  AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
637                                          address, kRadioTunerAudioDeviceName);
638    IPCThreadState::self()->restoreCallingIdentity(token);
639}
640
641#undef LOG_TAG
642#define LOG_TAG "RadioService::ModuleClient"
643
644RadioService::ModuleClient::ModuleClient(const sp<Module>& module,
645                                         const sp<IRadioClient>& client,
646                                         const struct radio_band_config *config,
647                                         bool audio)
648 : mModule(module), mClient(client), mConfig(*config), mAudio(audio), mTuner(NULL)
649{
650}
651
652void RadioService::ModuleClient::onFirstRef()
653{
654    mCallbackThread = new CallbackThread(this);
655    IInterface::asBinder(mClient)->linkToDeath(this);
656}
657
658RadioService::ModuleClient::~ModuleClient() {
659    if (mClient != 0) {
660        IInterface::asBinder(mClient)->unlinkToDeath(this);
661        mClient.clear();
662    }
663    if (mCallbackThread != 0) {
664        mCallbackThread->exit();
665    }
666}
667
668status_t RadioService::ModuleClient::dump(int fd __unused,
669                                             const Vector<String16>& args __unused) {
670    String8 result;
671    return NO_ERROR;
672}
673
674void RadioService::ModuleClient::detach() {
675    ALOGV("%s", __FUNCTION__);
676    sp<ModuleClient> strongMe = this;
677    {
678        AutoMutex lock(mLock);
679        if (mClient != 0) {
680            IInterface::asBinder(mClient)->unlinkToDeath(this);
681            mClient.clear();
682        }
683    }
684    sp<Module> module = mModule.promote();
685    if (module == 0) {
686        return;
687    }
688    module->removeClient(this);
689}
690
691radio_hal_band_config_t RadioService::ModuleClient::halConfig() const
692{
693    AutoMutex lock(mLock);
694    ALOGV("%s locked", __FUNCTION__);
695    return mConfig.band;
696}
697
698const struct radio_tuner *RadioService::ModuleClient::getTuner() const
699{
700    AutoMutex lock(mLock);
701    ALOGV("%s locked", __FUNCTION__);
702    return mTuner;
703}
704
705void RadioService::ModuleClient::setTuner(const struct radio_tuner *tuner)
706{
707    ALOGV("%s %p", __FUNCTION__, this);
708
709    AutoMutex lock(mLock);
710    mTuner = tuner;
711    ALOGV("%s locked", __FUNCTION__);
712
713    radio_hal_event_t event;
714    event.type = RADIO_EVENT_CONTROL;
715    event.status = 0;
716    event.on = mTuner != NULL;
717    mCallbackThread->sendEvent(&event);
718    ALOGV("%s DONE", __FUNCTION__);
719
720}
721
722status_t RadioService::ModuleClient::setConfiguration(const struct radio_band_config *config)
723{
724    AutoMutex lock(mLock);
725    status_t status = NO_ERROR;
726    ALOGV("%s locked", __FUNCTION__);
727
728    if (mTuner != NULL) {
729        struct radio_hal_band_config halConfig;
730        halConfig = config->band;
731        status = (status_t)mTuner->set_configuration(mTuner, &halConfig);
732        if (status == NO_ERROR) {
733            mConfig = *config;
734        }
735    } else {
736        mConfig = *config;
737        status == INVALID_OPERATION;
738    }
739
740    return status;
741}
742
743status_t RadioService::ModuleClient::getConfiguration(struct radio_band_config *config)
744{
745    AutoMutex lock(mLock);
746    status_t status = NO_ERROR;
747    ALOGV("%s locked", __FUNCTION__);
748
749    if (mTuner != NULL) {
750        struct radio_hal_band_config halConfig;
751        status = (status_t)mTuner->get_configuration(mTuner, &halConfig);
752        if (status == NO_ERROR) {
753            mConfig.band = halConfig;
754        }
755    }
756    *config = mConfig;
757
758    return status;
759}
760
761status_t RadioService::ModuleClient::setMute(bool mute)
762{
763    sp<Module> module;
764    {
765        Mutex::Autolock _l(mLock);
766        ALOGV("%s locked", __FUNCTION__);
767        if (mTuner == NULL || !mAudio) {
768            return INVALID_OPERATION;
769        }
770        module = mModule.promote();
771        if (module == 0) {
772            return NO_INIT;
773        }
774    }
775    module->setMute(mute);
776    return NO_ERROR;
777}
778
779status_t RadioService::ModuleClient::getMute(bool *mute)
780{
781    sp<Module> module;
782    {
783        Mutex::Autolock _l(mLock);
784        ALOGV("%s locked", __FUNCTION__);
785        module = mModule.promote();
786        if (module == 0) {
787            return NO_INIT;
788        }
789    }
790    return module->getMute(mute);
791}
792
793status_t RadioService::ModuleClient::scan(radio_direction_t direction, bool skipSubChannel)
794{
795    AutoMutex lock(mLock);
796    ALOGV("%s locked", __FUNCTION__);
797    status_t status;
798    if (mTuner != NULL) {
799        status = (status_t)mTuner->scan(mTuner, direction, skipSubChannel);
800    } else {
801        status = INVALID_OPERATION;
802    }
803    return status;
804}
805
806status_t RadioService::ModuleClient::step(radio_direction_t direction, bool skipSubChannel)
807{
808    AutoMutex lock(mLock);
809    ALOGV("%s locked", __FUNCTION__);
810    status_t status;
811    if (mTuner != NULL) {
812        status = (status_t)mTuner->step(mTuner, direction, skipSubChannel);
813    } else {
814        status = INVALID_OPERATION;
815    }
816    return status;
817}
818
819status_t RadioService::ModuleClient::tune(unsigned int channel, unsigned int subChannel)
820{
821    AutoMutex lock(mLock);
822    ALOGV("%s locked", __FUNCTION__);
823    status_t status;
824    if (mTuner != NULL) {
825        status = (status_t)mTuner->tune(mTuner, channel, subChannel);
826    } else {
827        status = INVALID_OPERATION;
828    }
829    return status;
830}
831
832status_t RadioService::ModuleClient::cancel()
833{
834    AutoMutex lock(mLock);
835    ALOGV("%s locked", __FUNCTION__);
836    status_t status;
837    if (mTuner != NULL) {
838        status = (status_t)mTuner->cancel(mTuner);
839    } else {
840        status = INVALID_OPERATION;
841    }
842    return status;
843}
844
845status_t RadioService::ModuleClient::getProgramInformation(struct radio_program_info *info)
846{
847    AutoMutex lock(mLock);
848    ALOGV("%s locked", __FUNCTION__);
849    status_t status;
850    if (mTuner != NULL) {
851        status = (status_t)mTuner->get_program_information(mTuner, info);
852    } else {
853        status = INVALID_OPERATION;
854    }
855    return status;
856}
857
858status_t RadioService::ModuleClient::hasControl(bool *hasControl)
859{
860    Mutex::Autolock lock(mLock);
861    ALOGV("%s locked", __FUNCTION__);
862    *hasControl = mTuner != NULL;
863    return NO_ERROR;
864}
865
866void RadioService::ModuleClient::onCallbackEvent(const sp<IMemory>& eventMemory)
867{
868    if (eventMemory == 0 || eventMemory->pointer() == NULL) {
869        return;
870    }
871
872    sp<IRadioClient> client;
873    {
874        AutoMutex lock(mLock);
875        ALOGV("%s locked", __FUNCTION__);
876        radio_event_t *event = (radio_event_t *)eventMemory->pointer();
877        switch (event->type) {
878        case RADIO_EVENT_CONFIG:
879            mConfig.band = event->config.band;
880            event->config.region = mConfig.region;
881            break;
882        default:
883            break;
884        }
885
886        client = mClient;
887    }
888    if (client != 0) {
889        client->onEvent(eventMemory);
890    }
891}
892
893
894void RadioService::ModuleClient::binderDied(
895    const wp<IBinder> &who __unused) {
896    ALOGW("client binder died for client %p", this);
897    detach();
898}
899
900}; // namespace android
901