1 /*
2  * Copyright (C) 2012 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 "BluetoothHeadsetServiceJni"
18 
19 #define LOG_NDEBUG 0
20 
21 #include "com_android_bluetooth.h"
22 #include "hardware/bluetooth_headset_callbacks.h"
23 #include "hardware/bluetooth_headset_interface.h"
24 #include "hardware/bt_hf.h"
25 #include "utils/Log.h"
26 
27 #include <mutex>
28 #include <shared_mutex>
29 
30 namespace android {
31 
32 static jmethodID method_onConnectionStateChanged;
33 static jmethodID method_onAudioStateChanged;
34 static jmethodID method_onVrStateChanged;
35 static jmethodID method_onAnswerCall;
36 static jmethodID method_onHangupCall;
37 static jmethodID method_onVolumeChanged;
38 static jmethodID method_onDialCall;
39 static jmethodID method_onSendDtmf;
40 static jmethodID method_onNoiseReductionEnable;
41 static jmethodID method_onWBS;
42 static jmethodID method_onAtChld;
43 static jmethodID method_onAtCnum;
44 static jmethodID method_onAtCind;
45 static jmethodID method_onAtCops;
46 static jmethodID method_onAtClcc;
47 static jmethodID method_onUnknownAt;
48 static jmethodID method_onKeyPressed;
49 static jmethodID method_onAtBind;
50 static jmethodID method_onAtBiev;
51 static jmethodID method_onAtBia;
52 
53 static bluetooth::headset::Interface* sBluetoothHfpInterface = nullptr;
54 static std::shared_timed_mutex interface_mutex;
55 
56 static jobject mCallbacksObj = nullptr;
57 static std::shared_timed_mutex callbacks_mutex;
58 
marshall_bda(RawAddress * bd_addr)59 static jbyteArray marshall_bda(RawAddress* bd_addr) {
60   CallbackEnv sCallbackEnv(__func__);
61   if (!sCallbackEnv.valid()) return nullptr;
62 
63   jbyteArray addr = sCallbackEnv->NewByteArray(sizeof(RawAddress));
64   if (!addr) {
65     ALOGE("Fail to new jbyteArray bd addr");
66     return nullptr;
67   }
68   sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(RawAddress),
69                                    (jbyte*)bd_addr);
70   return addr;
71 }
72 
73 class JniHeadsetCallbacks : bluetooth::headset::Callbacks {
74  public:
GetInstance()75   static bluetooth::headset::Callbacks* GetInstance() {
76     static bluetooth::headset::Callbacks* instance = new JniHeadsetCallbacks();
77     return instance;
78   }
79 
ConnectionStateCallback(bluetooth::headset::bthf_connection_state_t state,RawAddress * bd_addr)80   void ConnectionStateCallback(
81       bluetooth::headset::bthf_connection_state_t state,
82       RawAddress* bd_addr) override {
83     ALOGI("%s %d for %s", __func__, state, bd_addr->ToString().c_str());
84 
85     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
86     CallbackEnv sCallbackEnv(__func__);
87     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
88 
89     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
90     if (!addr.get()) return;
91 
92     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectionStateChanged,
93                                  (jint)state, addr.get());
94   }
95 
AudioStateCallback(bluetooth::headset::bthf_audio_state_t state,RawAddress * bd_addr)96   void AudioStateCallback(bluetooth::headset::bthf_audio_state_t state,
97                           RawAddress* bd_addr) override {
98     ALOGI("%s, %d for %s", __func__, state, bd_addr->ToString().c_str());
99 
100     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
101     CallbackEnv sCallbackEnv(__func__);
102     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
103 
104     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
105     if (!addr.get()) return;
106 
107     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAudioStateChanged,
108                                  (jint)state, addr.get());
109   }
110 
VoiceRecognitionCallback(bluetooth::headset::bthf_vr_state_t state,RawAddress * bd_addr)111   void VoiceRecognitionCallback(bluetooth::headset::bthf_vr_state_t state,
112                                 RawAddress* bd_addr) override {
113     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
114     CallbackEnv sCallbackEnv(__func__);
115     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
116 
117     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
118     if (!addr.get()) {
119       ALOGE("Fail to new jbyteArray bd addr for audio state");
120       return;
121     }
122 
123     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onVrStateChanged,
124                                  (jint)state, addr.get());
125   }
126 
AnswerCallCallback(RawAddress * bd_addr)127   void AnswerCallCallback(RawAddress* bd_addr) override {
128     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
129     CallbackEnv sCallbackEnv(__func__);
130     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
131 
132     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
133     if (!addr.get()) {
134       ALOGE("Fail to new jbyteArray bd addr for audio state");
135       return;
136     }
137 
138     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAnswerCall,
139                                  addr.get());
140   }
141 
HangupCallCallback(RawAddress * bd_addr)142   void HangupCallCallback(RawAddress* bd_addr) override {
143     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
144     CallbackEnv sCallbackEnv(__func__);
145     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
146 
147     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
148     if (!addr.get()) {
149       ALOGE("Fail to new jbyteArray bd addr for audio state");
150       return;
151     }
152 
153     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onHangupCall,
154                                  addr.get());
155   }
156 
VolumeControlCallback(bluetooth::headset::bthf_volume_type_t type,int volume,RawAddress * bd_addr)157   void VolumeControlCallback(bluetooth::headset::bthf_volume_type_t type,
158                              int volume, RawAddress* bd_addr) override {
159     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
160     CallbackEnv sCallbackEnv(__func__);
161     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
162 
163     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
164     if (!addr.get()) {
165       ALOGE("Fail to new jbyteArray bd addr for audio state");
166       return;
167     }
168 
169     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onVolumeChanged,
170                                  (jint)type, (jint)volume, addr.get());
171   }
172 
DialCallCallback(char * number,RawAddress * bd_addr)173   void DialCallCallback(char* number, RawAddress* bd_addr) override {
174     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
175     CallbackEnv sCallbackEnv(__func__);
176     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
177 
178     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
179     if (!addr.get()) {
180       ALOGE("Fail to new jbyteArray bd addr for audio state");
181       return;
182     }
183 
184     char null_str[] = "";
185     if (!sCallbackEnv.isValidUtf(number)) {
186       android_errorWriteLog(0x534e4554, "109838537");
187       ALOGE("%s: number is not a valid UTF string.", __func__);
188       number = null_str;
189     }
190 
191     ScopedLocalRef<jstring> js_number(sCallbackEnv.get(),
192                                       sCallbackEnv->NewStringUTF(number));
193     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onDialCall,
194                                  js_number.get(), addr.get());
195   }
196 
DtmfCmdCallback(char dtmf,RawAddress * bd_addr)197   void DtmfCmdCallback(char dtmf, RawAddress* bd_addr) override {
198     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
199     CallbackEnv sCallbackEnv(__func__);
200     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
201 
202     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
203     if (!addr.get()) {
204       ALOGE("Fail to new jbyteArray bd addr for audio state");
205       return;
206     }
207 
208     // TBD dtmf has changed from int to char
209     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onSendDtmf, dtmf,
210                                  addr.get());
211   }
212 
NoiseReductionCallback(bluetooth::headset::bthf_nrec_t nrec,RawAddress * bd_addr)213   void NoiseReductionCallback(bluetooth::headset::bthf_nrec_t nrec,
214                               RawAddress* bd_addr) override {
215     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
216     CallbackEnv sCallbackEnv(__func__);
217     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
218 
219     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
220     if (!addr.get()) {
221       ALOGE("Fail to new jbyteArray bd addr for audio state");
222       return;
223     }
224     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onNoiseReductionEnable,
225                                  nrec == bluetooth::headset::BTHF_NREC_START,
226                                  addr.get());
227   }
228 
WbsCallback(bluetooth::headset::bthf_wbs_config_t wbs_config,RawAddress * bd_addr)229   void WbsCallback(bluetooth::headset::bthf_wbs_config_t wbs_config,
230                    RawAddress* bd_addr) override {
231     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
232     CallbackEnv sCallbackEnv(__func__);
233     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
234 
235     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
236     if (addr.get() == nullptr) return;
237 
238     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onWBS, wbs_config,
239                                  addr.get());
240   }
241 
AtChldCallback(bluetooth::headset::bthf_chld_type_t chld,RawAddress * bd_addr)242   void AtChldCallback(bluetooth::headset::bthf_chld_type_t chld,
243                       RawAddress* bd_addr) override {
244     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
245     CallbackEnv sCallbackEnv(__func__);
246     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
247 
248     ScopedLocalRef<jbyteArray> addr(
249         sCallbackEnv.get(), sCallbackEnv->NewByteArray(sizeof(RawAddress)));
250     if (!addr.get()) {
251       ALOGE("Fail to new jbyteArray bd addr for audio state");
252       return;
253     }
254 
255     sCallbackEnv->SetByteArrayRegion(addr.get(), 0, sizeof(RawAddress),
256                                      (jbyte*)bd_addr);
257     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtChld, chld,
258                                  addr.get());
259   }
260 
AtCnumCallback(RawAddress * bd_addr)261   void AtCnumCallback(RawAddress* bd_addr) override {
262     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
263     CallbackEnv sCallbackEnv(__func__);
264     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
265 
266     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
267     if (!addr.get()) {
268       ALOGE("Fail to new jbyteArray bd addr for audio state");
269       return;
270     }
271 
272     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtCnum, addr.get());
273   }
274 
AtCindCallback(RawAddress * bd_addr)275   void AtCindCallback(RawAddress* bd_addr) override {
276     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
277     CallbackEnv sCallbackEnv(__func__);
278     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
279 
280     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
281     if (!addr.get()) {
282       ALOGE("Fail to new jbyteArray bd addr for audio state");
283       return;
284     }
285 
286     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtCind, addr.get());
287   }
288 
AtCopsCallback(RawAddress * bd_addr)289   void AtCopsCallback(RawAddress* bd_addr) override {
290     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
291     CallbackEnv sCallbackEnv(__func__);
292     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
293 
294     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
295     if (!addr.get()) {
296       ALOGE("Fail to new jbyteArray bd addr for audio state");
297       return;
298     }
299 
300     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtCops, addr.get());
301   }
302 
AtClccCallback(RawAddress * bd_addr)303   void AtClccCallback(RawAddress* bd_addr) override {
304     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
305     CallbackEnv sCallbackEnv(__func__);
306     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
307 
308     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
309     if (!addr.get()) {
310       ALOGE("Fail to new jbyteArray bd addr for audio state");
311       return;
312     }
313 
314     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtClcc, addr.get());
315   }
316 
UnknownAtCallback(char * at_string,RawAddress * bd_addr)317   void UnknownAtCallback(char* at_string, RawAddress* bd_addr) override {
318     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
319     CallbackEnv sCallbackEnv(__func__);
320     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
321 
322     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
323     if (!addr.get()) {
324       ALOGE("Fail to new jbyteArray bd addr for audio state");
325       return;
326     }
327 
328     char null_str[] = "";
329     if (!sCallbackEnv.isValidUtf(at_string)) {
330       android_errorWriteLog(0x534e4554, "109838537");
331       ALOGE("%s: at_string is not a valid UTF string.", __func__);
332       at_string = null_str;
333     }
334 
335     ScopedLocalRef<jstring> js_at_string(sCallbackEnv.get(),
336                                          sCallbackEnv->NewStringUTF(at_string));
337     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onUnknownAt,
338                                  js_at_string.get(), addr.get());
339   }
340 
KeyPressedCallback(RawAddress * bd_addr)341   void KeyPressedCallback(RawAddress* bd_addr) override {
342     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
343     CallbackEnv sCallbackEnv(__func__);
344     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
345 
346     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
347     if (!addr.get()) {
348       ALOGE("Fail to new jbyteArray bd addr for audio state");
349       return;
350     }
351 
352     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onKeyPressed,
353                                  addr.get());
354   }
355 
AtBindCallback(char * at_string,RawAddress * bd_addr)356   void AtBindCallback(char* at_string, RawAddress* bd_addr) override {
357     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
358     CallbackEnv sCallbackEnv(__func__);
359     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
360 
361     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
362     if (addr.get() == nullptr) return;
363 
364     char null_str[] = "";
365     if (!sCallbackEnv.isValidUtf(at_string)) {
366       android_errorWriteLog(0x534e4554, "109838537");
367       ALOGE("%s: at_string is not a valid UTF string.", __func__);
368       at_string = null_str;
369     }
370 
371     ScopedLocalRef<jstring> js_at_string(sCallbackEnv.get(),
372                                          sCallbackEnv->NewStringUTF(at_string));
373 
374     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtBind,
375                                  js_at_string.get(), addr.get());
376   }
377 
AtBievCallback(bluetooth::headset::bthf_hf_ind_type_t ind_id,int ind_value,RawAddress * bd_addr)378   void AtBievCallback(bluetooth::headset::bthf_hf_ind_type_t ind_id,
379                       int ind_value, RawAddress* bd_addr) override {
380     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
381     CallbackEnv sCallbackEnv(__func__);
382     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
383 
384     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
385     if (addr.get() == nullptr) return;
386 
387     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtBiev, ind_id,
388                                  (jint)ind_value, addr.get());
389   }
390 
AtBiaCallback(bool service,bool roam,bool signal,bool battery,RawAddress * bd_addr)391   void AtBiaCallback(bool service, bool roam, bool signal, bool battery,
392                      RawAddress* bd_addr) override {
393     std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex);
394     CallbackEnv sCallbackEnv(__func__);
395     if (!sCallbackEnv.valid() || !mCallbacksObj) return;
396 
397     ScopedLocalRef<jbyteArray> addr(sCallbackEnv.get(), marshall_bda(bd_addr));
398     if (addr.get() == nullptr) return;
399 
400     sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAtBia, service, roam,
401                                  signal, battery, addr.get());
402   }
403 };
404 
classInitNative(JNIEnv * env,jclass clazz)405 static void classInitNative(JNIEnv* env, jclass clazz) {
406   method_onConnectionStateChanged =
407       env->GetMethodID(clazz, "onConnectionStateChanged", "(I[B)V");
408   method_onAudioStateChanged =
409       env->GetMethodID(clazz, "onAudioStateChanged", "(I[B)V");
410   method_onVrStateChanged =
411       env->GetMethodID(clazz, "onVrStateChanged", "(I[B)V");
412   method_onAnswerCall = env->GetMethodID(clazz, "onAnswerCall", "([B)V");
413   method_onHangupCall = env->GetMethodID(clazz, "onHangupCall", "([B)V");
414   method_onVolumeChanged =
415       env->GetMethodID(clazz, "onVolumeChanged", "(II[B)V");
416   method_onDialCall =
417       env->GetMethodID(clazz, "onDialCall", "(Ljava/lang/String;[B)V");
418   method_onSendDtmf = env->GetMethodID(clazz, "onSendDtmf", "(I[B)V");
419   method_onNoiseReductionEnable =
420       env->GetMethodID(clazz, "onNoiseReductionEnable", "(Z[B)V");
421   method_onWBS = env->GetMethodID(clazz, "onWBS", "(I[B)V");
422   method_onAtChld = env->GetMethodID(clazz, "onAtChld", "(I[B)V");
423   method_onAtCnum = env->GetMethodID(clazz, "onAtCnum", "([B)V");
424   method_onAtCind = env->GetMethodID(clazz, "onAtCind", "([B)V");
425   method_onAtCops = env->GetMethodID(clazz, "onAtCops", "([B)V");
426   method_onAtClcc = env->GetMethodID(clazz, "onAtClcc", "([B)V");
427   method_onUnknownAt =
428       env->GetMethodID(clazz, "onUnknownAt", "(Ljava/lang/String;[B)V");
429   method_onKeyPressed = env->GetMethodID(clazz, "onKeyPressed", "([B)V");
430   method_onAtBind =
431       env->GetMethodID(clazz, "onATBind", "(Ljava/lang/String;[B)V");
432   method_onAtBiev = env->GetMethodID(clazz, "onATBiev", "(II[B)V");
433   method_onAtBia = env->GetMethodID(clazz, "onAtBia", "(ZZZZ[B)V");
434 
435   ALOGI("%s: succeeds", __func__);
436 }
437 
initializeNative(JNIEnv * env,jobject object,jint max_hf_clients,jboolean inband_ringing_enabled)438 static void initializeNative(JNIEnv* env, jobject object, jint max_hf_clients,
439                              jboolean inband_ringing_enabled) {
440   std::unique_lock<std::shared_timed_mutex> interface_lock(interface_mutex);
441   std::unique_lock<std::shared_timed_mutex> callbacks_lock(callbacks_mutex);
442 
443   const bt_interface_t* btInf = getBluetoothInterface();
444   if (!btInf) {
445     ALOGE("%s: Bluetooth module is not loaded", __func__);
446     jniThrowIOException(env, EINVAL);
447     return;
448   }
449 
450   if (sBluetoothHfpInterface) {
451     ALOGI("%s: Cleaning up Bluetooth Handsfree Interface before initializing",
452           __func__);
453     sBluetoothHfpInterface->Cleanup();
454     sBluetoothHfpInterface = nullptr;
455   }
456 
457   if (mCallbacksObj) {
458     ALOGI("%s: Cleaning up Bluetooth Handsfree callback object", __func__);
459     env->DeleteGlobalRef(mCallbacksObj);
460     mCallbacksObj = nullptr;
461   }
462 
463   sBluetoothHfpInterface =
464       (bluetooth::headset::Interface*)btInf->get_profile_interface(
465           BT_PROFILE_HANDSFREE_ID);
466   if (!sBluetoothHfpInterface) {
467     ALOGW("%s: Failed to get Bluetooth Handsfree Interface", __func__);
468     jniThrowIOException(env, EINVAL);
469     return;
470   }
471   bt_status_t status =
472       sBluetoothHfpInterface->Init(JniHeadsetCallbacks::GetInstance(),
473                                    max_hf_clients, inband_ringing_enabled);
474   if (status != BT_STATUS_SUCCESS) {
475     ALOGE("%s: Failed to initialize Bluetooth Handsfree Interface, status: %d",
476           __func__, status);
477     sBluetoothHfpInterface = nullptr;
478     return;
479   }
480 
481   mCallbacksObj = env->NewGlobalRef(object);
482 }
483 
cleanupNative(JNIEnv * env,jobject object)484 static void cleanupNative(JNIEnv* env, jobject object) {
485   std::unique_lock<std::shared_timed_mutex> interface_lock(interface_mutex);
486   std::unique_lock<std::shared_timed_mutex> callbacks_lock(callbacks_mutex);
487 
488   const bt_interface_t* btInf = getBluetoothInterface();
489   if (!btInf) {
490     ALOGW("%s: Bluetooth module is not loaded", __func__);
491     return;
492   }
493 
494   if (sBluetoothHfpInterface) {
495     ALOGI("%s: Cleaning up Bluetooth Handsfree Interface", __func__);
496     sBluetoothHfpInterface->Cleanup();
497     sBluetoothHfpInterface = nullptr;
498   }
499 
500   if (mCallbacksObj) {
501     ALOGI("%s: Cleaning up Bluetooth Handsfree callback object", __func__);
502     env->DeleteGlobalRef(mCallbacksObj);
503     mCallbacksObj = nullptr;
504   }
505 }
506 
connectHfpNative(JNIEnv * env,jobject object,jbyteArray address)507 static jboolean connectHfpNative(JNIEnv* env, jobject object,
508                                  jbyteArray address) {
509   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
510   if (!sBluetoothHfpInterface) {
511     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
512     return JNI_FALSE;
513   }
514   jbyte* addr = env->GetByteArrayElements(address, nullptr);
515   if (!addr) {
516     ALOGE("%s: failed to get device address", __func__);
517     jniThrowIOException(env, EINVAL);
518     return JNI_FALSE;
519   }
520   ALOGI("%s: device %s", __func__, ((RawAddress*)addr)->ToString().c_str());
521   bt_status_t status = sBluetoothHfpInterface->Connect((RawAddress*)addr);
522   if (status != BT_STATUS_SUCCESS) {
523     ALOGE("Failed HF connection, status: %d", status);
524   }
525   env->ReleaseByteArrayElements(address, addr, 0);
526   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
527 }
528 
disconnectHfpNative(JNIEnv * env,jobject object,jbyteArray address)529 static jboolean disconnectHfpNative(JNIEnv* env, jobject object,
530                                     jbyteArray address) {
531   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
532   if (!sBluetoothHfpInterface) {
533     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
534     return JNI_FALSE;
535   }
536   jbyte* addr = env->GetByteArrayElements(address, nullptr);
537   if (!addr) {
538     ALOGE("%s: failed to get device address", __func__);
539     jniThrowIOException(env, EINVAL);
540     return JNI_FALSE;
541   }
542   ALOGI("%s: device %s", __func__, ((RawAddress*)addr)->ToString().c_str());
543   bt_status_t status = sBluetoothHfpInterface->Disconnect((RawAddress*)addr);
544   if (status != BT_STATUS_SUCCESS) {
545     ALOGE("Failed HF disconnection, status: %d", status);
546   }
547   env->ReleaseByteArrayElements(address, addr, 0);
548   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
549 }
550 
connectAudioNative(JNIEnv * env,jobject object,jbyteArray address)551 static jboolean connectAudioNative(JNIEnv* env, jobject object,
552                                    jbyteArray address) {
553   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
554   if (!sBluetoothHfpInterface) {
555     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
556     return JNI_FALSE;
557   }
558   jbyte* addr = env->GetByteArrayElements(address, nullptr);
559   if (!addr) {
560     ALOGE("%s: failed to get device address", __func__);
561     jniThrowIOException(env, EINVAL);
562     return JNI_FALSE;
563   }
564   ALOGI("%s: device %s", __func__, ((RawAddress*)addr)->ToString().c_str());
565   bt_status_t status = sBluetoothHfpInterface->ConnectAudio((RawAddress*)addr);
566   if (status != BT_STATUS_SUCCESS) {
567     ALOGE("Failed HF audio connection, status: %d", status);
568   }
569   env->ReleaseByteArrayElements(address, addr, 0);
570   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
571 }
572 
disconnectAudioNative(JNIEnv * env,jobject object,jbyteArray address)573 static jboolean disconnectAudioNative(JNIEnv* env, jobject object,
574                                       jbyteArray address) {
575   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
576   if (!sBluetoothHfpInterface) {
577     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
578     return JNI_FALSE;
579   }
580   jbyte* addr = env->GetByteArrayElements(address, nullptr);
581   if (!addr) {
582     ALOGE("%s: failed to get device address", __func__);
583     jniThrowIOException(env, EINVAL);
584     return JNI_FALSE;
585   }
586   ALOGI("%s: device %s", __func__, ((RawAddress*)addr)->ToString().c_str());
587   bt_status_t status =
588       sBluetoothHfpInterface->DisconnectAudio((RawAddress*)addr);
589   if (status != BT_STATUS_SUCCESS) {
590     ALOGE("Failed HF audio disconnection, status: %d", status);
591   }
592   env->ReleaseByteArrayElements(address, addr, 0);
593   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
594 }
595 
startVoiceRecognitionNative(JNIEnv * env,jobject object,jbyteArray address)596 static jboolean startVoiceRecognitionNative(JNIEnv* env, jobject object,
597                                             jbyteArray address) {
598   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
599   if (!sBluetoothHfpInterface) {
600     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
601     return JNI_FALSE;
602   }
603   jbyte* addr = env->GetByteArrayElements(address, nullptr);
604   if (!addr) {
605     ALOGE("%s: failed to get device address", __func__);
606     jniThrowIOException(env, EINVAL);
607     return JNI_FALSE;
608   }
609   bt_status_t status =
610       sBluetoothHfpInterface->StartVoiceRecognition((RawAddress*)addr);
611   if (status != BT_STATUS_SUCCESS) {
612     ALOGE("Failed to start voice recognition, status: %d", status);
613   }
614   env->ReleaseByteArrayElements(address, addr, 0);
615   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
616 }
617 
stopVoiceRecognitionNative(JNIEnv * env,jobject object,jbyteArray address)618 static jboolean stopVoiceRecognitionNative(JNIEnv* env, jobject object,
619                                            jbyteArray address) {
620   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
621   if (!sBluetoothHfpInterface) {
622     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
623     return JNI_FALSE;
624   }
625   jbyte* addr = env->GetByteArrayElements(address, nullptr);
626   if (!addr) {
627     ALOGE("%s: failed to get device address", __func__);
628     jniThrowIOException(env, EINVAL);
629     return JNI_FALSE;
630   }
631   bt_status_t status =
632       sBluetoothHfpInterface->StopVoiceRecognition((RawAddress*)addr);
633   if (status != BT_STATUS_SUCCESS) {
634     ALOGE("Failed to stop voice recognition, status: %d", status);
635   }
636   env->ReleaseByteArrayElements(address, addr, 0);
637   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
638 }
639 
setVolumeNative(JNIEnv * env,jobject object,jint volume_type,jint volume,jbyteArray address)640 static jboolean setVolumeNative(JNIEnv* env, jobject object, jint volume_type,
641                                 jint volume, jbyteArray address) {
642   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
643   if (!sBluetoothHfpInterface) {
644     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
645     return JNI_FALSE;
646   }
647   jbyte* addr = env->GetByteArrayElements(address, nullptr);
648   if (!addr) {
649     ALOGE("%s: failed to get device address", __func__);
650     jniThrowIOException(env, EINVAL);
651     return JNI_FALSE;
652   }
653   bt_status_t status = sBluetoothHfpInterface->VolumeControl(
654       (bluetooth::headset::bthf_volume_type_t)volume_type, volume,
655       (RawAddress*)addr);
656   if (status != BT_STATUS_SUCCESS) {
657     ALOGE("FAILED to control volume, status: %d", status);
658   }
659   env->ReleaseByteArrayElements(address, addr, 0);
660   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
661 }
662 
notifyDeviceStatusNative(JNIEnv * env,jobject object,jint network_state,jint service_type,jint signal,jint battery_charge,jbyteArray address)663 static jboolean notifyDeviceStatusNative(JNIEnv* env, jobject object,
664                                          jint network_state, jint service_type,
665                                          jint signal, jint battery_charge,
666                                          jbyteArray address) {
667   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
668   if (!sBluetoothHfpInterface) {
669     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
670     return JNI_FALSE;
671   }
672   jbyte* addr = env->GetByteArrayElements(address, nullptr);
673   if (!addr) {
674     ALOGE("%s: failed to get device address", __func__);
675     jniThrowIOException(env, EINVAL);
676     return JNI_FALSE;
677   }
678   bt_status_t status = sBluetoothHfpInterface->DeviceStatusNotification(
679       (bluetooth::headset::bthf_network_state_t)network_state,
680       (bluetooth::headset::bthf_service_type_t)service_type, signal,
681       battery_charge, (RawAddress*)addr);
682   env->ReleaseByteArrayElements(address, addr, 0);
683   if (status != BT_STATUS_SUCCESS) {
684     ALOGE("FAILED to notify device status, status: %d", status);
685   }
686   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
687 }
688 
copsResponseNative(JNIEnv * env,jobject object,jstring operator_str,jbyteArray address)689 static jboolean copsResponseNative(JNIEnv* env, jobject object,
690                                    jstring operator_str, jbyteArray address) {
691   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
692   if (!sBluetoothHfpInterface) {
693     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
694     return JNI_FALSE;
695   }
696   jbyte* addr = env->GetByteArrayElements(address, nullptr);
697   if (!addr) {
698     ALOGE("%s: failed to get device address", __func__);
699     jniThrowIOException(env, EINVAL);
700     return JNI_FALSE;
701   }
702   const char* operator_name = env->GetStringUTFChars(operator_str, nullptr);
703   bt_status_t status =
704       sBluetoothHfpInterface->CopsResponse(operator_name, (RawAddress*)addr);
705   if (status != BT_STATUS_SUCCESS) {
706     ALOGE("Failed sending cops response, status: %d", status);
707   }
708   env->ReleaseByteArrayElements(address, addr, 0);
709   env->ReleaseStringUTFChars(operator_str, operator_name);
710   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
711 }
712 
cindResponseNative(JNIEnv * env,jobject object,jint service,jint num_active,jint num_held,jint call_state,jint signal,jint roam,jint battery_charge,jbyteArray address)713 static jboolean cindResponseNative(JNIEnv* env, jobject object, jint service,
714                                    jint num_active, jint num_held,
715                                    jint call_state, jint signal, jint roam,
716                                    jint battery_charge, jbyteArray address) {
717   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
718   if (!sBluetoothHfpInterface) {
719     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
720     return JNI_FALSE;
721   }
722   jbyte* addr = env->GetByteArrayElements(address, nullptr);
723   if (!addr) {
724     ALOGE("%s: failed to get device address", __func__);
725     jniThrowIOException(env, EINVAL);
726     return JNI_FALSE;
727   }
728   bt_status_t status = sBluetoothHfpInterface->CindResponse(
729       service, num_active, num_held,
730       (bluetooth::headset::bthf_call_state_t)call_state, signal, roam,
731       battery_charge, (RawAddress*)addr);
732   if (status != BT_STATUS_SUCCESS) {
733     ALOGE("%s: failed, status: %d", __func__, status);
734   }
735   env->ReleaseByteArrayElements(address, addr, 0);
736   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
737 }
738 
atResponseStringNative(JNIEnv * env,jobject object,jstring response_str,jbyteArray address)739 static jboolean atResponseStringNative(JNIEnv* env, jobject object,
740                                        jstring response_str,
741                                        jbyteArray address) {
742   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
743   if (!sBluetoothHfpInterface) {
744     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
745     return JNI_FALSE;
746   }
747   jbyte* addr = env->GetByteArrayElements(address, nullptr);
748   if (!addr) {
749     ALOGE("%s: failed to get device address", __func__);
750     jniThrowIOException(env, EINVAL);
751     return JNI_FALSE;
752   }
753   const char* response = env->GetStringUTFChars(response_str, nullptr);
754   bt_status_t status =
755       sBluetoothHfpInterface->FormattedAtResponse(response, (RawAddress*)addr);
756   if (status != BT_STATUS_SUCCESS) {
757     ALOGE("Failed formatted AT response, status: %d", status);
758   }
759   env->ReleaseByteArrayElements(address, addr, 0);
760   env->ReleaseStringUTFChars(response_str, response);
761   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
762 }
763 
atResponseCodeNative(JNIEnv * env,jobject object,jint response_code,jint cmee_code,jbyteArray address)764 static jboolean atResponseCodeNative(JNIEnv* env, jobject object,
765                                      jint response_code, jint cmee_code,
766                                      jbyteArray address) {
767   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
768   if (!sBluetoothHfpInterface) {
769     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
770     return JNI_FALSE;
771   }
772   jbyte* addr = env->GetByteArrayElements(address, nullptr);
773   if (!addr) {
774     ALOGE("%s: failed to get device address", __func__);
775     jniThrowIOException(env, EINVAL);
776     return JNI_FALSE;
777   }
778   bt_status_t status = sBluetoothHfpInterface->AtResponse(
779       (bluetooth::headset::bthf_at_response_t)response_code, cmee_code,
780       (RawAddress*)addr);
781   if (status != BT_STATUS_SUCCESS) {
782     ALOGE("Failed AT response, status: %d", status);
783   }
784   env->ReleaseByteArrayElements(address, addr, 0);
785   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
786 }
787 
clccResponseNative(JNIEnv * env,jobject object,jint index,jint dir,jint callStatus,jint mode,jboolean mpty,jstring number_str,jint type,jbyteArray address)788 static jboolean clccResponseNative(JNIEnv* env, jobject object, jint index,
789                                    jint dir, jint callStatus, jint mode,
790                                    jboolean mpty, jstring number_str, jint type,
791                                    jbyteArray address) {
792   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
793   if (!sBluetoothHfpInterface) {
794     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
795     return JNI_FALSE;
796   }
797   jbyte* addr = env->GetByteArrayElements(address, nullptr);
798   if (!addr) {
799     ALOGE("%s: failed to get device address", __func__);
800     jniThrowIOException(env, EINVAL);
801     return JNI_FALSE;
802   }
803   const char* number = nullptr;
804   if (number_str) {
805     number = env->GetStringUTFChars(number_str, nullptr);
806   }
807   bt_status_t status = sBluetoothHfpInterface->ClccResponse(
808       index, (bluetooth::headset::bthf_call_direction_t)dir,
809       (bluetooth::headset::bthf_call_state_t)callStatus,
810       (bluetooth::headset::bthf_call_mode_t)mode,
811       mpty ? bluetooth::headset::BTHF_CALL_MPTY_TYPE_MULTI
812            : bluetooth::headset::BTHF_CALL_MPTY_TYPE_SINGLE,
813       number, (bluetooth::headset::bthf_call_addrtype_t)type,
814       (RawAddress*)addr);
815   if (status != BT_STATUS_SUCCESS) {
816     ALOGE("Failed sending CLCC response, status: %d", status);
817   }
818   env->ReleaseByteArrayElements(address, addr, 0);
819   if (number) {
820     env->ReleaseStringUTFChars(number_str, number);
821   }
822   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
823 }
824 
phoneStateChangeNative(JNIEnv * env,jobject object,jint num_active,jint num_held,jint call_state,jstring number_str,jint type,jstring name_str,jbyteArray address)825 static jboolean phoneStateChangeNative(JNIEnv* env, jobject object,
826                                        jint num_active, jint num_held,
827                                        jint call_state, jstring number_str,
828                                        jint type, jstring name_str,
829                                        jbyteArray address) {
830   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
831   if (!sBluetoothHfpInterface) {
832     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
833     return JNI_FALSE;
834   }
835   jbyte* addr = env->GetByteArrayElements(address, nullptr);
836   if (!addr) {
837     ALOGE("%s: failed to get device address", __func__);
838     jniThrowIOException(env, EINVAL);
839     return JNI_FALSE;
840   }
841   const char* number = env->GetStringUTFChars(number_str, nullptr);
842   const char* name = nullptr;
843   if (name_str != nullptr) {
844     name = env->GetStringUTFChars(name_str, nullptr);
845   }
846   bt_status_t status = sBluetoothHfpInterface->PhoneStateChange(
847       num_active, num_held, (bluetooth::headset::bthf_call_state_t)call_state,
848       number, (bluetooth::headset::bthf_call_addrtype_t)type, name,
849       (RawAddress*)addr);
850   if (status != BT_STATUS_SUCCESS) {
851     ALOGE("Failed report phone state change, status: %d", status);
852   }
853   env->ReleaseStringUTFChars(number_str, number);
854   if (name != nullptr) {
855     env->ReleaseStringUTFChars(name_str, name);
856   }
857   env->ReleaseByteArrayElements(address, addr, 0);
858   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
859 }
860 
setScoAllowedNative(JNIEnv * env,jobject object,jboolean value)861 static jboolean setScoAllowedNative(JNIEnv* env, jobject object,
862                                     jboolean value) {
863   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
864   if (!sBluetoothHfpInterface) {
865     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
866     return JNI_FALSE;
867   }
868   bt_status_t status = sBluetoothHfpInterface->SetScoAllowed(value == JNI_TRUE);
869   if (status != BT_STATUS_SUCCESS) {
870     ALOGE("Failed HF set sco allowed, status: %d", status);
871   }
872   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
873 }
874 
sendBsirNative(JNIEnv * env,jobject object,jboolean value,jbyteArray address)875 static jboolean sendBsirNative(JNIEnv* env, jobject object, jboolean value,
876                                jbyteArray address) {
877   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
878   if (!sBluetoothHfpInterface) {
879     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
880     return JNI_FALSE;
881   }
882   jbyte* addr = env->GetByteArrayElements(address, NULL);
883   if (!addr) {
884     ALOGE("%s: failed to get device address", __func__);
885     jniThrowIOException(env, EINVAL);
886     return JNI_FALSE;
887   }
888   bt_status_t status =
889       sBluetoothHfpInterface->SendBsir(value == JNI_TRUE, (RawAddress*)addr);
890   if (status != BT_STATUS_SUCCESS) {
891     ALOGE("Failed sending BSIR, value=%d, status=%d", value, status);
892   }
893   env->ReleaseByteArrayElements(address, addr, 0);
894   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
895 }
896 
setActiveDeviceNative(JNIEnv * env,jobject object,jbyteArray address)897 static jboolean setActiveDeviceNative(JNIEnv* env, jobject object,
898                                       jbyteArray address) {
899   std::shared_lock<std::shared_timed_mutex> lock(interface_mutex);
900   if (!sBluetoothHfpInterface) {
901     ALOGW("%s: sBluetoothHfpInterface is null", __func__);
902     return JNI_FALSE;
903   }
904   jbyte* addr = env->GetByteArrayElements(address, NULL);
905   if (!addr) {
906     ALOGE("%s: failed to get device address", __func__);
907     jniThrowIOException(env, EINVAL);
908     return JNI_FALSE;
909   }
910   bt_status_t status =
911       sBluetoothHfpInterface->SetActiveDevice((RawAddress*)addr);
912   if (status != BT_STATUS_SUCCESS) {
913     ALOGE("Failed to set active device, status: %d", status);
914   }
915   env->ReleaseByteArrayElements(address, addr, 0);
916   return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
917 }
918 
919 static JNINativeMethod sMethods[] = {
920     {"classInitNative", "()V", (void*)classInitNative},
921     {"initializeNative", "(IZ)V", (void*)initializeNative},
922     {"cleanupNative", "()V", (void*)cleanupNative},
923     {"connectHfpNative", "([B)Z", (void*)connectHfpNative},
924     {"disconnectHfpNative", "([B)Z", (void*)disconnectHfpNative},
925     {"connectAudioNative", "([B)Z", (void*)connectAudioNative},
926     {"disconnectAudioNative", "([B)Z", (void*)disconnectAudioNative},
927     {"startVoiceRecognitionNative", "([B)Z",
928      (void*)startVoiceRecognitionNative},
929     {"stopVoiceRecognitionNative", "([B)Z", (void*)stopVoiceRecognitionNative},
930     {"setVolumeNative", "(II[B)Z", (void*)setVolumeNative},
931     {"notifyDeviceStatusNative", "(IIII[B)Z", (void*)notifyDeviceStatusNative},
932     {"copsResponseNative", "(Ljava/lang/String;[B)Z",
933      (void*)copsResponseNative},
934     {"cindResponseNative", "(IIIIIII[B)Z", (void*)cindResponseNative},
935     {"atResponseStringNative", "(Ljava/lang/String;[B)Z",
936      (void*)atResponseStringNative},
937     {"atResponseCodeNative", "(II[B)Z", (void*)atResponseCodeNative},
938     {"clccResponseNative", "(IIIIZLjava/lang/String;I[B)Z",
939      (void*)clccResponseNative},
940     {"phoneStateChangeNative", "(IIILjava/lang/String;ILjava/lang/String;[B)Z",
941      (void*)phoneStateChangeNative},
942     {"setScoAllowedNative", "(Z)Z", (void*)setScoAllowedNative},
943     {"sendBsirNative", "(Z[B)Z", (void*)sendBsirNative},
944     {"setActiveDeviceNative", "([B)Z", (void*)setActiveDeviceNative},
945 };
946 
register_com_android_bluetooth_hfp(JNIEnv * env)947 int register_com_android_bluetooth_hfp(JNIEnv* env) {
948   return jniRegisterNativeMethods(
949       env, "com/android/bluetooth/hfp/HeadsetNativeInterface", sMethods,
950       NELEM(sMethods));
951 }
952 
953 } /* namespace android */
954