com_android_server_location_GpsLocationProvider.cpp revision ea8a8a6076f04360de2d25b3e5853cde8026cd5f 
1/*
2 * Copyright (C) 2008 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 "GpsLocationProvider"
18
19#define LOG_NDEBUG 0
20
21#include "JNIHelp.h"
22#include "jni.h"
23#include "hardware/hardware.h"
24#include "hardware/gps.h"
25#include "hardware_legacy/power.h"
26#include "utils/Log.h"
27#include "utils/misc.h"
28#include "android_runtime/AndroidRuntime.h"
29#include "android_runtime/Log.h"
30
31#include <string.h>
32#include <pthread.h>
33#include <linux/in.h>
34#include <linux/in6.h>
35
36static jobject mCallbacksObj = NULL;
37
38static jmethodID method_reportLocation;
39static jmethodID method_reportStatus;
40static jmethodID method_reportSvStatus;
41static jmethodID method_reportAGpsStatus;
42static jmethodID method_reportNmea;
43static jmethodID method_setEngineCapabilities;
44static jmethodID method_xtraDownloadRequest;
45static jmethodID method_reportNiNotification;
46static jmethodID method_requestRefLocation;
47static jmethodID method_requestSetID;
48static jmethodID method_requestUtcTime;
49static jmethodID method_reportGeofenceTransition;
50static jmethodID method_reportGeofenceStatus;
51static jmethodID method_reportGeofenceAddStatus;
52static jmethodID method_reportGeofenceRemoveStatus;
53static jmethodID method_reportGeofencePauseStatus;
54static jmethodID method_reportGeofenceResumeStatus;
55static jmethodID method_reportMeasurementData;
56
57static const GpsInterface* sGpsInterface = NULL;
58static const GpsXtraInterface* sGpsXtraInterface = NULL;
59static const AGpsInterface* sAGpsInterface = NULL;
60static const GpsNiInterface* sGpsNiInterface = NULL;
61static const GpsDebugInterface* sGpsDebugInterface = NULL;
62static const AGpsRilInterface* sAGpsRilInterface = NULL;
63static const GpsGeofencingInterface* sGpsGeofencingInterface = NULL;
64static const GpsMeasurementInterface* sGpsMeasurementInterface = NULL;
65
66// temporary storage for GPS callbacks
67static GpsSvStatus  sGpsSvStatus;
68static const char* sNmeaString;
69static int sNmeaStringLength;
70
71#define WAKE_LOCK_NAME  "GPS"
72
73namespace android {
74
75static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
76    if (env->ExceptionCheck()) {
77        ALOGE("An exception was thrown by callback '%s'.", methodName);
78        LOGE_EX(env);
79        env->ExceptionClear();
80    }
81}
82
83static void location_callback(GpsLocation* location)
84{
85    JNIEnv* env = AndroidRuntime::getJNIEnv();
86    env->CallVoidMethod(mCallbacksObj, method_reportLocation, location->flags,
87            (jdouble)location->latitude, (jdouble)location->longitude,
88            (jdouble)location->altitude,
89            (jfloat)location->speed, (jfloat)location->bearing,
90            (jfloat)location->accuracy, (jlong)location->timestamp);
91    checkAndClearExceptionFromCallback(env, __FUNCTION__);
92}
93
94static void status_callback(GpsStatus* status)
95{
96    JNIEnv* env = AndroidRuntime::getJNIEnv();
97    env->CallVoidMethod(mCallbacksObj, method_reportStatus, status->status);
98    checkAndClearExceptionFromCallback(env, __FUNCTION__);
99}
100
101static void sv_status_callback(GpsSvStatus* sv_status)
102{
103    JNIEnv* env = AndroidRuntime::getJNIEnv();
104    memcpy(&sGpsSvStatus, sv_status, sizeof(sGpsSvStatus));
105    env->CallVoidMethod(mCallbacksObj, method_reportSvStatus);
106    checkAndClearExceptionFromCallback(env, __FUNCTION__);
107}
108
109static void nmea_callback(GpsUtcTime timestamp, const char* nmea, int length)
110{
111    JNIEnv* env = AndroidRuntime::getJNIEnv();
112    // The Java code will call back to read these values
113    // We do this to avoid creating unnecessary String objects
114    sNmeaString = nmea;
115    sNmeaStringLength = length;
116    env->CallVoidMethod(mCallbacksObj, method_reportNmea, timestamp);
117    checkAndClearExceptionFromCallback(env, __FUNCTION__);
118}
119
120static void set_capabilities_callback(uint32_t capabilities)
121{
122    ALOGD("set_capabilities_callback: %du\n", capabilities);
123    JNIEnv* env = AndroidRuntime::getJNIEnv();
124    env->CallVoidMethod(mCallbacksObj, method_setEngineCapabilities, capabilities);
125    checkAndClearExceptionFromCallback(env, __FUNCTION__);
126}
127
128static void acquire_wakelock_callback()
129{
130    acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_NAME);
131}
132
133static void release_wakelock_callback()
134{
135    release_wake_lock(WAKE_LOCK_NAME);
136}
137
138static void request_utc_time_callback()
139{
140    JNIEnv* env = AndroidRuntime::getJNIEnv();
141    env->CallVoidMethod(mCallbacksObj, method_requestUtcTime);
142    checkAndClearExceptionFromCallback(env, __FUNCTION__);
143}
144
145static pthread_t create_thread_callback(const char* name, void (*start)(void *), void* arg)
146{
147    return (pthread_t)AndroidRuntime::createJavaThread(name, start, arg);
148}
149
150GpsCallbacks sGpsCallbacks = {
151    sizeof(GpsCallbacks),
152    location_callback,
153    status_callback,
154    sv_status_callback,
155    nmea_callback,
156    set_capabilities_callback,
157    acquire_wakelock_callback,
158    release_wakelock_callback,
159    create_thread_callback,
160    request_utc_time_callback,
161};
162
163static void xtra_download_request_callback()
164{
165    JNIEnv* env = AndroidRuntime::getJNIEnv();
166    env->CallVoidMethod(mCallbacksObj, method_xtraDownloadRequest);
167    checkAndClearExceptionFromCallback(env, __FUNCTION__);
168}
169
170GpsXtraCallbacks sGpsXtraCallbacks = {
171    xtra_download_request_callback,
172    create_thread_callback,
173};
174
175static jbyteArray convert_to_ipv4(uint32_t ip, bool net_order)
176{
177    if (INADDR_NONE == ip) {
178        return NULL;
179    }
180
181    JNIEnv* env = AndroidRuntime::getJNIEnv();
182    jbyteArray byteArray = env->NewByteArray(4);
183    if (byteArray == NULL) {
184        ALOGE("Unable to allocate byte array for IPv4 address");
185        return NULL;
186    }
187
188    jbyte ipv4[4];
189    if (net_order) {
190        memcpy(ipv4, &ip, sizeof(ipv4));
191    } else {
192        //endianess transparent conversion from int to char[]
193        ipv4[0] = (jbyte) (ip & 0xFF);
194        ipv4[1] = (jbyte)((ip>>8) & 0xFF);
195        ipv4[2] = (jbyte)((ip>>16) & 0xFF);
196        ipv4[3] = (jbyte) (ip>>24);
197    }
198
199    env->SetByteArrayRegion(byteArray, 0, 4, (const jbyte*) ipv4);
200    return byteArray;
201}
202
203static void agps_status_callback(AGpsStatus* agps_status)
204{
205    JNIEnv* env = AndroidRuntime::getJNIEnv();
206    jbyteArray byteArray = NULL;
207    bool isSupported = false;
208
209    size_t status_size = agps_status->size;
210    if (status_size == sizeof(AGpsStatus_v3)) {
211      switch (agps_status->addr.ss_family)
212      {
213      case AF_INET:
214          {
215            struct sockaddr_in *in = (struct sockaddr_in*)&(agps_status->addr);
216            uint32_t *pAddr = (uint32_t*)&(in->sin_addr);
217            byteArray = convert_to_ipv4(*pAddr, true /* net_order */);
218            if (byteArray != NULL) {
219                isSupported = true;
220            }
221          }
222          break;
223      case AF_INET6:
224          {
225            struct sockaddr_in6 *in6 = (struct sockaddr_in6*)&(agps_status->addr);
226            byteArray = env->NewByteArray(16);
227            if (byteArray != NULL) {
228                env->SetByteArrayRegion(byteArray, 0, 16, (const jbyte *)&(in6->sin6_addr));
229                isSupported = true;
230            } else {
231                ALOGE("Unable to allocate byte array for IPv6 address.");
232            }
233          }
234          break;
235      default:
236          ALOGE("Invalid ss_family found: %d", agps_status->addr.ss_family);
237          break;
238      }
239    } else if (status_size >= sizeof(AGpsStatus_v2)) {
240      // for back-compatibility reasons we check in v2 that the data structure size is greater or
241      // equal to the declared size in gps.h
242      uint32_t ipaddr = agps_status->ipaddr;
243      byteArray = convert_to_ipv4(ipaddr, false /* net_order */);
244      if (ipaddr == INADDR_NONE || byteArray != NULL) {
245          isSupported = true;
246      }
247    } else if (status_size >= sizeof(AGpsStatus_v1)) {
248        // because we have to check for >= with regards to v2, we also need to relax the check here
249        // and only make sure that the size is at least what we expect
250        isSupported = true;
251    } else {
252        ALOGE("Invalid size of AGpsStatus found: %d.", status_size);
253    }
254
255    if (isSupported) {
256        env->CallVoidMethod(mCallbacksObj, method_reportAGpsStatus, agps_status->type,
257                            agps_status->status, byteArray);
258
259        checkAndClearExceptionFromCallback(env, __FUNCTION__);
260    } else {
261        ALOGD("Skipping calling method_reportAGpsStatus.");
262    }
263
264    if (byteArray) {
265        env->DeleteLocalRef(byteArray);
266    }
267}
268
269AGpsCallbacks sAGpsCallbacks = {
270    agps_status_callback,
271    create_thread_callback,
272};
273
274static void gps_ni_notify_callback(GpsNiNotification *notification)
275{
276    ALOGD("gps_ni_notify_callback\n");
277    JNIEnv* env = AndroidRuntime::getJNIEnv();
278    jstring requestor_id = env->NewStringUTF(notification->requestor_id);
279    jstring text = env->NewStringUTF(notification->text);
280    jstring extras = env->NewStringUTF(notification->extras);
281
282    if (requestor_id && text && extras) {
283        env->CallVoidMethod(mCallbacksObj, method_reportNiNotification,
284            notification->notification_id, notification->ni_type,
285            notification->notify_flags, notification->timeout,
286            notification->default_response, requestor_id, text,
287            notification->requestor_id_encoding,
288            notification->text_encoding, extras);
289    } else {
290        ALOGE("out of memory in gps_ni_notify_callback\n");
291    }
292
293    if (requestor_id)
294        env->DeleteLocalRef(requestor_id);
295    if (text)
296        env->DeleteLocalRef(text);
297    if (extras)
298        env->DeleteLocalRef(extras);
299    checkAndClearExceptionFromCallback(env, __FUNCTION__);
300}
301
302GpsNiCallbacks sGpsNiCallbacks = {
303    gps_ni_notify_callback,
304    create_thread_callback,
305};
306
307static void agps_request_set_id(uint32_t flags)
308{
309    JNIEnv* env = AndroidRuntime::getJNIEnv();
310    env->CallVoidMethod(mCallbacksObj, method_requestSetID, flags);
311    checkAndClearExceptionFromCallback(env, __FUNCTION__);
312}
313
314static void agps_request_ref_location(uint32_t flags)
315{
316    JNIEnv* env = AndroidRuntime::getJNIEnv();
317    env->CallVoidMethod(mCallbacksObj, method_requestRefLocation, flags);
318    checkAndClearExceptionFromCallback(env, __FUNCTION__);
319}
320
321AGpsRilCallbacks sAGpsRilCallbacks = {
322    agps_request_set_id,
323    agps_request_ref_location,
324    create_thread_callback,
325};
326
327static void gps_geofence_transition_callback(int32_t geofence_id,  GpsLocation* location,
328        int32_t transition, GpsUtcTime timestamp)
329{
330    JNIEnv* env = AndroidRuntime::getJNIEnv();
331
332    env->CallVoidMethod(mCallbacksObj, method_reportGeofenceTransition, geofence_id,
333            location->flags, (jdouble)location->latitude, (jdouble)location->longitude,
334            (jdouble)location->altitude,
335            (jfloat)location->speed, (jfloat)location->bearing,
336            (jfloat)location->accuracy, (jlong)location->timestamp,
337            transition, timestamp);
338    checkAndClearExceptionFromCallback(env, __FUNCTION__);
339};
340
341static void gps_geofence_status_callback(int32_t status, GpsLocation* location)
342{
343    JNIEnv* env = AndroidRuntime::getJNIEnv();
344    jint flags = 0;
345    jdouble latitude = 0;
346    jdouble longitude = 0;
347    jdouble altitude = 0;
348    jfloat speed = 0;
349    jfloat bearing = 0;
350    jfloat accuracy = 0;
351    jlong timestamp = 0;
352    if (location != NULL) {
353        flags = location->flags;
354        latitude = location->latitude;
355        longitude = location->longitude;
356        altitude = location->altitude;
357        speed = location->speed;
358        bearing = location->bearing;
359        accuracy = location->accuracy;
360        timestamp = location->timestamp;
361    }
362
363    env->CallVoidMethod(mCallbacksObj, method_reportGeofenceStatus, status,
364            flags, latitude, longitude, altitude, speed, bearing, accuracy, timestamp);
365    checkAndClearExceptionFromCallback(env, __FUNCTION__);
366};
367
368static void gps_geofence_add_callback(int32_t geofence_id, int32_t status)
369{
370    JNIEnv* env = AndroidRuntime::getJNIEnv();
371    if (status != GPS_GEOFENCE_OPERATION_SUCCESS) {
372        ALOGE("Error in geofence_add_callback: %d\n", status);
373    }
374    env->CallVoidMethod(mCallbacksObj, method_reportGeofenceAddStatus, geofence_id, status);
375    checkAndClearExceptionFromCallback(env, __FUNCTION__);
376};
377
378static void gps_geofence_remove_callback(int32_t geofence_id, int32_t status)
379{
380    JNIEnv* env = AndroidRuntime::getJNIEnv();
381    if (status != GPS_GEOFENCE_OPERATION_SUCCESS) {
382        ALOGE("Error in geofence_remove_callback: %d\n", status);
383    }
384    env->CallVoidMethod(mCallbacksObj, method_reportGeofenceRemoveStatus, geofence_id, status);
385    checkAndClearExceptionFromCallback(env, __FUNCTION__);
386};
387
388static void gps_geofence_resume_callback(int32_t geofence_id, int32_t status)
389{
390    JNIEnv* env = AndroidRuntime::getJNIEnv();
391    if (status != GPS_GEOFENCE_OPERATION_SUCCESS) {
392        ALOGE("Error in geofence_resume_callback: %d\n", status);
393    }
394    env->CallVoidMethod(mCallbacksObj, method_reportGeofenceResumeStatus, geofence_id, status);
395    checkAndClearExceptionFromCallback(env, __FUNCTION__);
396};
397
398static void gps_geofence_pause_callback(int32_t geofence_id, int32_t status)
399{
400    JNIEnv* env = AndroidRuntime::getJNIEnv();
401    if (status != GPS_GEOFENCE_OPERATION_SUCCESS) {
402        ALOGE("Error in geofence_pause_callback: %d\n", status);
403    }
404    env->CallVoidMethod(mCallbacksObj, method_reportGeofencePauseStatus, geofence_id, status);
405    checkAndClearExceptionFromCallback(env, __FUNCTION__);
406};
407
408GpsGeofenceCallbacks sGpsGeofenceCallbacks = {
409    gps_geofence_transition_callback,
410    gps_geofence_status_callback,
411    gps_geofence_add_callback,
412    gps_geofence_remove_callback,
413    gps_geofence_pause_callback,
414    gps_geofence_resume_callback,
415    create_thread_callback,
416};
417
418static void android_location_GpsLocationProvider_class_init_native(JNIEnv* env, jclass clazz) {
419    int err;
420    hw_module_t* module;
421
422    method_reportLocation = env->GetMethodID(clazz, "reportLocation", "(IDDDFFFJ)V");
423    method_reportStatus = env->GetMethodID(clazz, "reportStatus", "(I)V");
424    method_reportSvStatus = env->GetMethodID(clazz, "reportSvStatus", "()V");
425    method_reportAGpsStatus = env->GetMethodID(clazz, "reportAGpsStatus", "(II[B)V");
426    method_reportNmea = env->GetMethodID(clazz, "reportNmea", "(J)V");
427    method_setEngineCapabilities = env->GetMethodID(clazz, "setEngineCapabilities", "(I)V");
428    method_xtraDownloadRequest = env->GetMethodID(clazz, "xtraDownloadRequest", "()V");
429    method_reportNiNotification = env->GetMethodID(clazz, "reportNiNotification",
430            "(IIIIILjava/lang/String;Ljava/lang/String;IILjava/lang/String;)V");
431    method_requestRefLocation = env->GetMethodID(clazz,"requestRefLocation","(I)V");
432    method_requestSetID = env->GetMethodID(clazz,"requestSetID","(I)V");
433    method_requestUtcTime = env->GetMethodID(clazz,"requestUtcTime","()V");
434    method_reportGeofenceTransition = env->GetMethodID(clazz,"reportGeofenceTransition",
435            "(IIDDDFFFJIJ)V");
436    method_reportGeofenceStatus = env->GetMethodID(clazz,"reportGeofenceStatus",
437            "(IIDDDFFFJ)V");
438    method_reportGeofenceAddStatus = env->GetMethodID(clazz,"reportGeofenceAddStatus",
439            "(II)V");
440    method_reportGeofenceRemoveStatus = env->GetMethodID(clazz,"reportGeofenceRemoveStatus",
441            "(II)V");
442    method_reportGeofenceResumeStatus = env->GetMethodID(clazz,"reportGeofenceResumeStatus",
443            "(II)V");
444    method_reportGeofencePauseStatus = env->GetMethodID(clazz,"reportGeofencePauseStatus",
445            "(II)V");
446    method_reportMeasurementData = env->GetMethodID(
447            clazz,
448            "reportMeasurementData",
449            "(Landroid/location/GpsMeasurementsEvent;)V");
450
451    err = hw_get_module(GPS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
452    if (err == 0) {
453        hw_device_t* device;
454        err = module->methods->open(module, GPS_HARDWARE_MODULE_ID, &device);
455        if (err == 0) {
456            gps_device_t* gps_device = (gps_device_t *)device;
457            sGpsInterface = gps_device->get_gps_interface(gps_device);
458        }
459    }
460    if (sGpsInterface) {
461        sGpsXtraInterface =
462            (const GpsXtraInterface*)sGpsInterface->get_extension(GPS_XTRA_INTERFACE);
463        sAGpsInterface =
464            (const AGpsInterface*)sGpsInterface->get_extension(AGPS_INTERFACE);
465        sGpsNiInterface =
466            (const GpsNiInterface*)sGpsInterface->get_extension(GPS_NI_INTERFACE);
467        sGpsDebugInterface =
468            (const GpsDebugInterface*)sGpsInterface->get_extension(GPS_DEBUG_INTERFACE);
469        sAGpsRilInterface =
470            (const AGpsRilInterface*)sGpsInterface->get_extension(AGPS_RIL_INTERFACE);
471        sGpsGeofencingInterface =
472            (const GpsGeofencingInterface*)sGpsInterface->get_extension(GPS_GEOFENCING_INTERFACE);
473        sGpsMeasurementInterface =
474            (const GpsMeasurementInterface*)sGpsInterface->get_extension(GPS_MEASUREMENT_INTERFACE);
475    }
476}
477
478static jboolean android_location_GpsLocationProvider_is_supported(JNIEnv* env, jclass clazz) {
479    if (sGpsInterface != NULL) {
480        return JNI_TRUE;
481    } else {
482        return JNI_FALSE;
483    }
484}
485
486static jboolean android_location_GpsLocationProvider_init(JNIEnv* env, jobject obj)
487{
488    // this must be set before calling into the HAL library
489    if (!mCallbacksObj)
490        mCallbacksObj = env->NewGlobalRef(obj);
491
492    // fail if the main interface fails to initialize
493    if (!sGpsInterface || sGpsInterface->init(&sGpsCallbacks) != 0)
494        return JNI_FALSE;
495
496    // if XTRA initialization fails we will disable it by sGpsXtraInterface to NULL,
497    // but continue to allow the rest of the GPS interface to work.
498    if (sGpsXtraInterface && sGpsXtraInterface->init(&sGpsXtraCallbacks) != 0)
499        sGpsXtraInterface = NULL;
500    if (sAGpsInterface)
501        sAGpsInterface->init(&sAGpsCallbacks);
502    if (sGpsNiInterface)
503        sGpsNiInterface->init(&sGpsNiCallbacks);
504    if (sAGpsRilInterface)
505        sAGpsRilInterface->init(&sAGpsRilCallbacks);
506    if (sGpsGeofencingInterface)
507        sGpsGeofencingInterface->init(&sGpsGeofenceCallbacks);
508
509    return JNI_TRUE;
510}
511
512static void android_location_GpsLocationProvider_cleanup(JNIEnv* env, jobject obj)
513{
514    if (sGpsInterface)
515        sGpsInterface->cleanup();
516}
517
518static jboolean android_location_GpsLocationProvider_set_position_mode(JNIEnv* env, jobject obj,
519        jint mode, jint recurrence, jint min_interval, jint preferred_accuracy, jint preferred_time)
520{
521    if (sGpsInterface) {
522        if (sGpsInterface->set_position_mode(mode, recurrence, min_interval, preferred_accuracy,
523                preferred_time) == 0) {
524            return JNI_TRUE;
525        } else {
526            return JNI_FALSE;
527        }
528    }
529    else
530        return JNI_FALSE;
531}
532
533static jboolean android_location_GpsLocationProvider_start(JNIEnv* env, jobject obj)
534{
535    if (sGpsInterface) {
536        if (sGpsInterface->start() == 0) {
537            return JNI_TRUE;
538        } else {
539            return JNI_FALSE;
540        }
541    }
542    else
543        return JNI_FALSE;
544}
545
546static jboolean android_location_GpsLocationProvider_stop(JNIEnv* env, jobject obj)
547{
548    if (sGpsInterface) {
549        if (sGpsInterface->stop() == 0) {
550            return JNI_TRUE;
551        } else {
552            return JNI_FALSE;
553        }
554    }
555    else
556        return JNI_FALSE;
557}
558
559static void android_location_GpsLocationProvider_delete_aiding_data(JNIEnv* env, jobject obj, jint flags)
560{
561    if (sGpsInterface)
562        sGpsInterface->delete_aiding_data(flags);
563}
564
565static jint android_location_GpsLocationProvider_read_sv_status(JNIEnv* env, jobject obj,
566        jintArray prnArray, jfloatArray snrArray, jfloatArray elevArray, jfloatArray azumArray,
567        jintArray maskArray)
568{
569    // this should only be called from within a call to reportSvStatus
570
571    jint* prns = env->GetIntArrayElements(prnArray, 0);
572    jfloat* snrs = env->GetFloatArrayElements(snrArray, 0);
573    jfloat* elev = env->GetFloatArrayElements(elevArray, 0);
574    jfloat* azim = env->GetFloatArrayElements(azumArray, 0);
575    jint* mask = env->GetIntArrayElements(maskArray, 0);
576
577    int num_svs = sGpsSvStatus.num_svs;
578    for (int i = 0; i < num_svs; i++) {
579        prns[i] = sGpsSvStatus.sv_list[i].prn;
580        snrs[i] = sGpsSvStatus.sv_list[i].snr;
581        elev[i] = sGpsSvStatus.sv_list[i].elevation;
582        azim[i] = sGpsSvStatus.sv_list[i].azimuth;
583    }
584    mask[0] = sGpsSvStatus.ephemeris_mask;
585    mask[1] = sGpsSvStatus.almanac_mask;
586    mask[2] = sGpsSvStatus.used_in_fix_mask;
587
588    env->ReleaseIntArrayElements(prnArray, prns, 0);
589    env->ReleaseFloatArrayElements(snrArray, snrs, 0);
590    env->ReleaseFloatArrayElements(elevArray, elev, 0);
591    env->ReleaseFloatArrayElements(azumArray, azim, 0);
592    env->ReleaseIntArrayElements(maskArray, mask, 0);
593    return (jint) num_svs;
594}
595
596static void android_location_GpsLocationProvider_agps_set_reference_location_cellid(JNIEnv* env,
597        jobject obj, jint type, jint mcc, jint mnc, jint lac, jint cid)
598{
599    AGpsRefLocation location;
600
601    if (!sAGpsRilInterface) {
602        ALOGE("no AGPS RIL interface in agps_set_reference_location_cellid");
603        return;
604    }
605
606    switch(type) {
607        case AGPS_REF_LOCATION_TYPE_GSM_CELLID:
608        case AGPS_REF_LOCATION_TYPE_UMTS_CELLID:
609            location.type = type;
610            location.u.cellID.mcc = mcc;
611            location.u.cellID.mnc = mnc;
612            location.u.cellID.lac = lac;
613            location.u.cellID.cid = cid;
614            break;
615        default:
616            ALOGE("Neither a GSM nor a UMTS cellid (%s:%d).",__FUNCTION__,__LINE__);
617            return;
618            break;
619    }
620    sAGpsRilInterface->set_ref_location(&location, sizeof(location));
621}
622
623static void android_location_GpsLocationProvider_agps_send_ni_message(JNIEnv* env,
624        jobject obj, jbyteArray ni_msg, jint size)
625{
626    size_t sz;
627
628    if (!sAGpsRilInterface) {
629        ALOGE("no AGPS RIL interface in send_ni_message");
630        return;
631    }
632    if (size < 0)
633        return;
634    sz = (size_t)size;
635    jbyte* b = env->GetByteArrayElements(ni_msg, 0);
636    sAGpsRilInterface->ni_message((uint8_t *)b,sz);
637    env->ReleaseByteArrayElements(ni_msg,b,0);
638}
639
640static void android_location_GpsLocationProvider_agps_set_id(JNIEnv *env,
641        jobject obj, jint type, jstring  setid_string)
642{
643    if (!sAGpsRilInterface) {
644        ALOGE("no AGPS RIL interface in agps_set_id");
645        return;
646    }
647
648    const char *setid = env->GetStringUTFChars(setid_string, NULL);
649    sAGpsRilInterface->set_set_id(type, setid);
650    env->ReleaseStringUTFChars(setid_string, setid);
651}
652
653static jint android_location_GpsLocationProvider_read_nmea(JNIEnv* env, jobject obj,
654                                            jbyteArray nmeaArray, jint buffer_size)
655{
656    // this should only be called from within a call to reportNmea
657    jbyte* nmea = (jbyte *)env->GetPrimitiveArrayCritical(nmeaArray, 0);
658    int length = sNmeaStringLength;
659    if (length > buffer_size)
660        length = buffer_size;
661    memcpy(nmea, sNmeaString, length);
662    env->ReleasePrimitiveArrayCritical(nmeaArray, nmea, JNI_ABORT);
663    return (jint) length;
664}
665
666static void android_location_GpsLocationProvider_inject_time(JNIEnv* env, jobject obj,
667        jlong time, jlong timeReference, jint uncertainty)
668{
669    if (sGpsInterface)
670        sGpsInterface->inject_time(time, timeReference, uncertainty);
671}
672
673static void android_location_GpsLocationProvider_inject_location(JNIEnv* env, jobject obj,
674        jdouble latitude, jdouble longitude, jfloat accuracy)
675{
676    if (sGpsInterface)
677        sGpsInterface->inject_location(latitude, longitude, accuracy);
678}
679
680static jboolean android_location_GpsLocationProvider_supports_xtra(JNIEnv* env, jobject obj)
681{
682    if (sGpsXtraInterface != NULL) {
683        return JNI_TRUE;
684    } else {
685        return JNI_FALSE;
686    }
687}
688
689static void android_location_GpsLocationProvider_inject_xtra_data(JNIEnv* env, jobject obj,
690        jbyteArray data, jint length)
691{
692    if (!sGpsXtraInterface) {
693        ALOGE("no XTRA interface in inject_xtra_data");
694        return;
695    }
696
697    jbyte* bytes = (jbyte *)env->GetPrimitiveArrayCritical(data, 0);
698    sGpsXtraInterface->inject_xtra_data((char *)bytes, length);
699    env->ReleasePrimitiveArrayCritical(data, bytes, JNI_ABORT);
700}
701
702static void android_location_GpsLocationProvider_agps_data_conn_open(
703        JNIEnv* env, jobject obj, jstring apn, jint apnIpType)
704{
705    if (!sAGpsInterface) {
706        ALOGE("no AGPS interface in agps_data_conn_open");
707        return;
708    }
709    if (apn == NULL) {
710        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
711        return;
712    }
713
714    const char *apnStr = env->GetStringUTFChars(apn, NULL);
715
716    size_t interface_size = sAGpsInterface->size;
717    if (interface_size == sizeof(AGpsInterface_v2)) {
718        sAGpsInterface->data_conn_open_with_apn_ip_type(apnStr, apnIpType);
719    } else if (interface_size == sizeof(AGpsInterface_v1)) {
720        sAGpsInterface->data_conn_open(apnStr);
721    } else {
722        ALOGE("Invalid size of AGpsInterface found: %d.", interface_size);
723    }
724
725    env->ReleaseStringUTFChars(apn, apnStr);
726}
727
728static void android_location_GpsLocationProvider_agps_data_conn_closed(JNIEnv* env, jobject obj)
729{
730    if (!sAGpsInterface) {
731        ALOGE("no AGPS interface in agps_data_conn_closed");
732        return;
733    }
734    sAGpsInterface->data_conn_closed();
735}
736
737static void android_location_GpsLocationProvider_agps_data_conn_failed(JNIEnv* env, jobject obj)
738{
739    if (!sAGpsInterface) {
740        ALOGE("no AGPS interface in agps_data_conn_failed");
741        return;
742    }
743    sAGpsInterface->data_conn_failed();
744}
745
746static void android_location_GpsLocationProvider_set_agps_server(JNIEnv* env, jobject obj,
747        jint type, jstring hostname, jint port)
748{
749    if (!sAGpsInterface) {
750        ALOGE("no AGPS interface in set_agps_server");
751        return;
752    }
753    const char *c_hostname = env->GetStringUTFChars(hostname, NULL);
754    sAGpsInterface->set_server(type, c_hostname, port);
755    env->ReleaseStringUTFChars(hostname, c_hostname);
756}
757
758static void android_location_GpsLocationProvider_send_ni_response(JNIEnv* env, jobject obj,
759      jint notifId, jint response)
760{
761    if (!sGpsNiInterface) {
762        ALOGE("no NI interface in send_ni_response");
763        return;
764    }
765
766    sGpsNiInterface->respond(notifId, response);
767}
768
769static jstring android_location_GpsLocationProvider_get_internal_state(JNIEnv* env, jobject obj)
770{
771    jstring result = NULL;
772    if (sGpsDebugInterface) {
773        const size_t maxLength = 2047;
774        char buffer[maxLength+1];
775        size_t length = sGpsDebugInterface->get_internal_state(buffer, maxLength);
776        if (length > maxLength) length = maxLength;
777        buffer[length] = 0;
778        result = env->NewStringUTF(buffer);
779    }
780    return result;
781}
782
783static void android_location_GpsLocationProvider_update_network_state(JNIEnv* env, jobject obj,
784        jboolean connected, jint type, jboolean roaming, jboolean available, jstring extraInfo, jstring apn)
785{
786
787    if (sAGpsRilInterface && sAGpsRilInterface->update_network_state) {
788        if (extraInfo) {
789            const char *extraInfoStr = env->GetStringUTFChars(extraInfo, NULL);
790            sAGpsRilInterface->update_network_state(connected, type, roaming, extraInfoStr);
791            env->ReleaseStringUTFChars(extraInfo, extraInfoStr);
792        } else {
793            sAGpsRilInterface->update_network_state(connected, type, roaming, NULL);
794        }
795
796        // update_network_availability callback was not included in original AGpsRilInterface
797        if (sAGpsRilInterface->size >= sizeof(AGpsRilInterface)
798                && sAGpsRilInterface->update_network_availability) {
799            const char *c_apn = env->GetStringUTFChars(apn, NULL);
800            sAGpsRilInterface->update_network_availability(available, c_apn);
801            env->ReleaseStringUTFChars(apn, c_apn);
802        }
803    }
804}
805
806static jboolean android_location_GpsLocationProvider_is_geofence_supported(JNIEnv* env,
807          jobject obj) {
808    if (sGpsGeofencingInterface != NULL) {
809        return JNI_TRUE;
810    }
811    return JNI_FALSE;
812}
813
814static jboolean android_location_GpsLocationProvider_add_geofence(JNIEnv* env, jobject obj,
815        jint geofence_id, jdouble latitude, jdouble longitude, jdouble radius,
816        jint last_transition, jint monitor_transition, jint notification_responsiveness,
817        jint unknown_timer) {
818    if (sGpsGeofencingInterface != NULL) {
819        sGpsGeofencingInterface->add_geofence_area(geofence_id, latitude, longitude,
820                radius, last_transition, monitor_transition, notification_responsiveness,
821                unknown_timer);
822        return JNI_TRUE;
823    } else {
824        ALOGE("Geofence interface not available");
825    }
826    return JNI_FALSE;
827}
828
829static jboolean android_location_GpsLocationProvider_remove_geofence(JNIEnv* env, jobject obj,
830        jint geofence_id) {
831    if (sGpsGeofencingInterface != NULL) {
832        sGpsGeofencingInterface->remove_geofence_area(geofence_id);
833        return JNI_TRUE;
834    } else {
835        ALOGE("Geofence interface not available");
836    }
837    return JNI_FALSE;
838}
839
840static jboolean android_location_GpsLocationProvider_pause_geofence(JNIEnv* env, jobject obj,
841        jint geofence_id) {
842    if (sGpsGeofencingInterface != NULL) {
843        sGpsGeofencingInterface->pause_geofence(geofence_id);
844        return JNI_TRUE;
845    } else {
846        ALOGE("Geofence interface not available");
847    }
848    return JNI_FALSE;
849}
850
851static jboolean android_location_GpsLocationProvider_resume_geofence(JNIEnv* env, jobject obj,
852        jint geofence_id, jint monitor_transition) {
853    if (sGpsGeofencingInterface != NULL) {
854        sGpsGeofencingInterface->resume_geofence(geofence_id, monitor_transition);
855        return JNI_TRUE;
856    } else {
857        ALOGE("Geofence interface not available");
858    }
859    return JNI_FALSE;
860}
861
862static jobject translate_gps_clock(JNIEnv* env, GpsClock* clock) {
863    const char* doubleSignature = "(D)V";
864
865    jclass gpsClockClass = env->FindClass("android/location/GpsClock");
866    jmethodID gpsClockCtor = env->GetMethodID(gpsClockClass, "<init>", "()V");
867
868    jobject gpsClockObject = env->NewObject(gpsClockClass, gpsClockCtor);
869    GpsClockFlags flags = clock->flags;
870
871    if (flags & GPS_CLOCK_HAS_LEAP_SECOND) {
872        jmethodID setterMethod = env->GetMethodID(gpsClockClass, "setLeapSecond", "(S)V");
873        env->CallObjectMethod(gpsClockObject, setterMethod, clock->leap_second);
874   }
875
876    jmethodID setterMethod = env->GetMethodID(gpsClockClass, "setTimeInNs", "(J)V");
877    env->CallObjectMethod(gpsClockObject, setterMethod, clock->time_ns);
878
879    if (flags & GPS_CLOCK_HAS_TIME_UNCERTAINTY) {
880        jmethodID setterMethod = env->GetMethodID(
881                gpsClockClass,
882                "setTimeUncertaintyInNs",
883                doubleSignature);
884        env->CallObjectMethod(gpsClockObject, setterMethod, clock->time_uncertainty_ns);
885    }
886
887    if (flags & GPS_CLOCK_HAS_BIAS) {
888        jmethodID setterMethod = env->GetMethodID(gpsClockClass, "setBiasInNs", doubleSignature);
889        env->CallObjectMethod(gpsClockObject, setterMethod, clock->bias_ns);
890    }
891
892    if (flags & GPS_CLOCK_HAS_BIAS_UNCERTAINTY) {
893        jmethodID setterMethod = env->GetMethodID(
894                gpsClockClass,
895                "setBiasUncertaintyInNs",
896                doubleSignature);
897        env->CallObjectMethod(gpsClockObject, setterMethod, clock->bias_uncertainty_ns);
898    }
899
900    if (flags & GPS_CLOCK_HAS_DRIFT) {
901        jmethodID setterMethod = env->GetMethodID(
902                gpsClockClass,
903                "setDriftInNsPerSec",
904                doubleSignature);
905        env->CallObjectMethod(gpsClockObject, setterMethod, clock->drift_nsps);
906    }
907
908    if (flags & GPS_CLOCK_HAS_DRIFT_UNCERTAINTY) {
909        jmethodID setterMethod = env->GetMethodID(
910                gpsClockClass,
911                "setDriftUncertaintyInNsPerSec",
912                doubleSignature);
913        env->CallObjectMethod(gpsClockObject, setterMethod, clock->drift_uncertainty_nsps);
914    }
915
916    return gpsClockObject;
917}
918
919static jobject translate_gps_measurement(
920        JNIEnv* env,
921        GpsMeasurement* measurement,
922        uint32_t time_ns) {
923    const char* shortSignature = "(S)V";
924    const char* longSignature = "(J)V";
925    const char* floatSignature = "(F)V";
926    const char* doubleSignature = "(D)V";
927
928    jclass gpsMeasurementClass = env->FindClass("android/location/GpsMeasurement");
929    jmethodID gpsMeasurementCtor = env->GetMethodID(gpsMeasurementClass, "<init>", "()V");
930
931    jobject gpsMeasurementObject = env->NewObject(gpsMeasurementClass, gpsMeasurementCtor);
932    GpsMeasurementFlags flags = measurement->flags;
933
934
935    jmethodID prnSetterMethod = env->GetMethodID(gpsMeasurementClass, "setPrn", "(B)V");
936    env->CallObjectMethod(gpsMeasurementObject, prnSetterMethod, measurement->prn);
937
938    jmethodID localTimeSetterMethod =
939            env->GetMethodID(gpsMeasurementClass, "setLocalTimeInNs", longSignature);
940    env->CallObjectMethod(
941            gpsMeasurementObject,
942            localTimeSetterMethod,
943            time_ns + measurement->time_offset_ns);
944
945    jmethodID receivedGpsTowSetterMethod =
946            env->GetMethodID(gpsMeasurementClass, "setReceivedGpsTowInNs", longSignature);
947    env->CallObjectMethod(
948            gpsMeasurementObject,
949            receivedGpsTowSetterMethod,
950            measurement->received_gps_tow_ns);
951
952    jmethodID cn0SetterMethod = env->GetMethodID(
953            gpsMeasurementClass,
954            "setCn0InDbHz",
955            doubleSignature);
956    env->CallObjectMethod(gpsMeasurementObject, cn0SetterMethod, measurement->c_n0_dbhz);
957
958    jmethodID pseudorangeRateSetterMethod = env->GetMethodID(
959            gpsMeasurementClass,
960            "setPseudorangeRateInMetersPerSec",
961            doubleSignature);
962    env->CallObjectMethod(
963            gpsMeasurementObject,
964            pseudorangeRateSetterMethod,
965            measurement->pseudorange_rate_mpersec);
966
967    jmethodID pseudorangeRateUncertaintySetterMethod = env->GetMethodID(
968            gpsMeasurementClass,
969            "setPseudorangeRateUncertaintyInMetersPerSec",
970            doubleSignature);
971    env->CallObjectMethod(
972            gpsMeasurementObject,
973            pseudorangeRateUncertaintySetterMethod,
974            measurement->pseudorange_rate_uncertainty_mpersec);
975
976    jmethodID accumulatedDeltaRangeSetterMethod = env->GetMethodID(
977            gpsMeasurementClass,
978            "setAccumulatedDeltaRangeInMeters",
979            doubleSignature);
980    env->CallVoidMethod(
981            gpsMeasurementObject,
982            accumulatedDeltaRangeSetterMethod,
983            measurement->accumulated_delta_range_m);
984
985    jmethodID accumulatedDeltaRangeUncertaintySetterMethod = env->GetMethodID(
986            gpsMeasurementClass,
987            "setAccumulatedDeltaRangeUncertaintyInMeters",
988            doubleSignature);
989    env->CallVoidMethod(
990            gpsMeasurementObject,
991            accumulatedDeltaRangeUncertaintySetterMethod,
992            measurement->accumulated_delta_range_uncertainty_m);
993
994
995    if (flags & GPS_MEASUREMENT_HAS_PSEUDORANGE) {
996        jmethodID setterMethod = env->GetMethodID(
997                gpsMeasurementClass,
998                "setPseudorangeInMeters",
999                doubleSignature);
1000        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->pseudorange_m);
1001    }
1002
1003    if (flags & GPS_MEASUREMENT_HAS_PSEUDORANGE_UNCERTAINTY) {
1004        jmethodID setterMethod = env->GetMethodID(
1005                gpsMeasurementClass,
1006                "setPseudorangeUncertaintyInMeters",
1007                doubleSignature);
1008        env->CallObjectMethod(
1009                gpsMeasurementObject,
1010                setterMethod,
1011                measurement->pseudorange_uncertainty_m);
1012    }
1013
1014    if (flags & GPS_MEASUREMENT_HAS_CODE_PHASE) {
1015        jmethodID setterMethod = env->GetMethodID(
1016                gpsMeasurementClass,
1017                "setCodePhaseInChips",
1018                doubleSignature);
1019        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->code_phase_chips);
1020    }
1021
1022    if (flags & GPS_MEASUREMENT_HAS_CODE_PHASE_UNCERTAINTY) {
1023        jmethodID setterMethod = env->GetMethodID(
1024                gpsMeasurementClass,
1025                "setCodePhaseUncertaintyInChips",
1026                doubleSignature);
1027        env->CallObjectMethod(
1028                gpsMeasurementObject,
1029                setterMethod,
1030                measurement->code_phase_uncertainty_chips);
1031    }
1032
1033    if (flags & GPS_MEASUREMENT_HAS_CARRIER_FREQUENCY) {
1034        jmethodID setterMethod = env->GetMethodID(
1035                gpsMeasurementClass,
1036                "setCarrierFrequencyInHz",
1037                 floatSignature);
1038        env->CallObjectMethod(
1039                gpsMeasurementObject,
1040                setterMethod,
1041                measurement->carrier_frequency_hz);
1042    }
1043
1044    if (flags & GPS_MEASUREMENT_HAS_CARRIER_CYCLES) {
1045        jmethodID setterMethod =
1046                env->GetMethodID(gpsMeasurementClass, "setCarrierCycles", longSignature);
1047        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->carrier_cycles);
1048    }
1049
1050    if (flags & GPS_MEASUREMENT_HAS_CARRIER_PHASE) {
1051        jmethodID setterMethod =
1052                env->GetMethodID(gpsMeasurementClass, "setCarrierPhase", doubleSignature);
1053        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->carrier_phase);
1054    }
1055
1056    if (flags & GPS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY) {
1057        jmethodID setterMethod = env->GetMethodID(
1058                gpsMeasurementClass,
1059                "setCarrierPhaseUncertainty",
1060                doubleSignature);
1061        env->CallObjectMethod(
1062                gpsMeasurementObject,
1063                setterMethod,
1064                measurement->carrier_phase_uncertainty);
1065    }
1066
1067    jmethodID lossOfLockSetterMethod =
1068            env->GetMethodID(gpsMeasurementClass, "setLossOfLock", shortSignature);
1069    env->CallObjectMethod(gpsMeasurementObject, lossOfLockSetterMethod, measurement->loss_of_lock);
1070
1071    if (flags & GPS_MEASUREMENT_HAS_BIT_NUMBER) {
1072        jmethodID setterMethod = env->GetMethodID(
1073                gpsMeasurementClass,
1074                "setBitNumber",
1075                shortSignature);
1076        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->bit_number);
1077    }
1078
1079    if (flags & GPS_MEASUREMENT_HAS_TIME_FROM_LAST_BIT) {
1080        jmethodID setterMethod = env->GetMethodID(
1081                gpsMeasurementClass,
1082                "setTimeFromLastBitInNs",
1083                longSignature);
1084        env->CallObjectMethod(
1085                gpsMeasurementObject,
1086                setterMethod,
1087                measurement->time_from_last_bit_ns);
1088    }
1089
1090    if (flags & GPS_MEASUREMENT_HAS_DOPPLER_SHIFT) {
1091        jmethodID setterMethod = env->GetMethodID(
1092                gpsMeasurementClass,
1093                "setDopplerShiftInHz",
1094                doubleSignature);
1095        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->doppler_shift_hz);
1096    }
1097
1098    if (flags & GPS_MEASUREMENT_HAS_DOPPLER_SHIFT_UNCERTAINTY) {
1099        jmethodID setterMethod = env->GetMethodID(
1100                gpsMeasurementClass,
1101                "setDopplerShiftUncertaintyInHz",
1102                doubleSignature);
1103        env->CallObjectMethod(
1104                gpsMeasurementObject,
1105                setterMethod,
1106                measurement->doppler_shift_uncertainty_hz);
1107    }
1108
1109    jmethodID multipathIndicatorSetterMethod = env->GetMethodID(
1110            gpsMeasurementClass,
1111            "setMultipathIndicator",
1112            shortSignature);
1113    env->CallObjectMethod(
1114            gpsMeasurementObject,
1115            multipathIndicatorSetterMethod,
1116            measurement->multipath_indicator);
1117
1118    if (flags & GPS_MEASUREMENT_HAS_SNR) {
1119        jmethodID setterMethod =
1120                env->GetMethodID(gpsMeasurementClass, "setSnrInDb", doubleSignature);
1121        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->snr_db);
1122    }
1123
1124    if (flags & GPS_MEASUREMENT_HAS_ELEVATION) {
1125        jmethodID setterMethod = env->GetMethodID(
1126                gpsMeasurementClass,
1127                "setElevationInDeg",
1128                doubleSignature);
1129        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->elevation_deg);
1130    }
1131
1132    if (flags & GPS_MEASUREMENT_HAS_ELEVATION_UNCERTAINTY) {
1133        jmethodID setterMethod = env->GetMethodID(
1134                gpsMeasurementClass,
1135                "setElevationUncertaintyInDeg",
1136                doubleSignature);
1137        env->CallObjectMethod(
1138                gpsMeasurementObject,
1139                setterMethod,
1140                measurement->elevation_uncertainty_deg);
1141    }
1142
1143    if (flags & GPS_MEASUREMENT_HAS_AZIMUTH) {
1144        jmethodID setterMethod =
1145                env->GetMethodID(gpsMeasurementClass, "setAzimuthInDeg", doubleSignature);
1146        env->CallObjectMethod(gpsMeasurementObject, setterMethod, measurement->azimuth_deg);
1147    }
1148
1149    if (flags & GPS_MEASUREMENT_HAS_AZIMUTH_UNCERTAINTY) {
1150        jmethodID setterMethod = env->GetMethodID(
1151                gpsMeasurementClass,
1152                "setAzimuthUncertaintyInDeg",
1153                doubleSignature);
1154        env->CallObjectMethod(
1155                gpsMeasurementObject,
1156                setterMethod,
1157                measurement->azimuth_uncertainty_deg);
1158    }
1159
1160    jmethodID usedInFixSetterMethod = env->GetMethodID(gpsMeasurementClass, "setUsedInFix", "(Z)V");
1161    env->CallObjectMethod(
1162            gpsMeasurementObject,
1163            usedInFixSetterMethod,
1164            (flags & GPS_MEASUREMENT_HAS_USED_IN_FIX) && measurement->used_in_fix);
1165
1166    return gpsMeasurementObject;
1167}
1168
1169static jobjectArray translate_gps_measurements(JNIEnv* env, GpsData* data) {
1170    size_t measurementCount = data->measurement_count;
1171    if (measurementCount == 0) {
1172        return NULL;
1173    }
1174
1175    jclass gpsMeasurementClass = env->FindClass("android/location/GpsMeasurement");
1176    jobjectArray gpsMeasurementArray = env->NewObjectArray(
1177            measurementCount,
1178            gpsMeasurementClass,
1179            NULL /* initialElement */);
1180
1181    GpsMeasurement* gpsMeasurements = data->measurements;
1182    for (uint16_t i = 0; i < measurementCount; ++i) {
1183        jobject gpsMeasurement = translate_gps_measurement(
1184                env,
1185                &gpsMeasurements[i],
1186                data->clock.time_ns);
1187        env->SetObjectArrayElement(gpsMeasurementArray, i, gpsMeasurement);
1188        env->DeleteLocalRef(gpsMeasurement);
1189    }
1190
1191    env->DeleteLocalRef(gpsMeasurementClass);
1192    return gpsMeasurementArray;
1193}
1194
1195static void measurement_callback(GpsData* data) {
1196    JNIEnv* env = AndroidRuntime::getJNIEnv();
1197    if (data == NULL) {
1198        ALOGE("Invalid data provided to gps_measurement_callback");
1199        return;
1200    }
1201
1202    if (data->size == sizeof(GpsData)) {
1203        jobject gpsClock = translate_gps_clock(env, &data->clock);
1204        jobjectArray measurementArray = translate_gps_measurements(env, data);
1205
1206        jclass gpsMeasurementsEventClass = env->FindClass("android/location/GpsMeasurementsEvent");
1207        jmethodID gpsMeasurementsEventCtor = env->GetMethodID(
1208                gpsMeasurementsEventClass,
1209                "<init>",
1210                "(Landroid/location/GpsClock;[Landroid/location/GpsMeasurement;)V");
1211
1212        jobject gpsMeasurementsEvent = env->NewObject(
1213                gpsMeasurementsEventClass,
1214                gpsMeasurementsEventCtor,
1215                gpsClock,
1216                measurementArray);
1217
1218        env->CallVoidMethod(mCallbacksObj, method_reportMeasurementData, gpsMeasurementsEvent);
1219        checkAndClearExceptionFromCallback(env, __FUNCTION__);
1220    } else {
1221        ALOGE("Invalid GpsData size found in gps_measurement_callback, size=%d", data->size);
1222        return;
1223    }
1224}
1225
1226GpsMeasurementCallbacks sGpsMeasurementCallbacks = {
1227    sizeof(GpsMeasurementCallbacks),
1228    measurement_callback,
1229};
1230
1231static jboolean android_location_GpsLocationProvider_is_measurement_supported(
1232        JNIEnv* env,
1233        jobject obj) {
1234    if (sGpsMeasurementInterface != NULL) {
1235        return JNI_TRUE;
1236    }
1237    return JNI_FALSE;
1238}
1239
1240static jboolean android_location_GpsLocationProvider_start_measurement_collection(
1241        JNIEnv* env,
1242        jobject obj) {
1243    if (sGpsMeasurementInterface == NULL) {
1244        ALOGE("Measurement interface is not available.");
1245        return JNI_FALSE;
1246    }
1247
1248    int result = sGpsMeasurementInterface->init(&sGpsMeasurementCallbacks);
1249    if (result != GPS_GEOFENCE_OPERATION_SUCCESS) {
1250        ALOGE("An error has been found on GpsMeasurementInterface::init, status=%d", result);
1251        return JNI_FALSE;
1252    }
1253
1254    return JNI_TRUE;
1255}
1256
1257static jboolean android_location_GpsLocationProvider_stop_measurement_collection(
1258        JNIEnv* env,
1259        jobject obj) {
1260    if (sGpsMeasurementInterface == NULL) {
1261        ALOGE("Measurement interface not available");
1262        return JNI_FALSE;
1263    }
1264
1265    sGpsMeasurementInterface->close();
1266    return JNI_TRUE;
1267}
1268
1269static JNINativeMethod sMethods[] = {
1270     /* name, signature, funcPtr */
1271    {"class_init_native", "()V", (void *)android_location_GpsLocationProvider_class_init_native},
1272    {"native_is_supported", "()Z", (void*)android_location_GpsLocationProvider_is_supported},
1273    {"native_init", "()Z", (void*)android_location_GpsLocationProvider_init},
1274    {"native_cleanup", "()V", (void*)android_location_GpsLocationProvider_cleanup},
1275    {"native_set_position_mode",
1276            "(IIIII)Z",
1277            (void*)android_location_GpsLocationProvider_set_position_mode},
1278    {"native_start", "()Z", (void*)android_location_GpsLocationProvider_start},
1279    {"native_stop", "()Z", (void*)android_location_GpsLocationProvider_stop},
1280    {"native_delete_aiding_data",
1281            "(I)V",
1282            (void*)android_location_GpsLocationProvider_delete_aiding_data},
1283    {"native_read_sv_status",
1284            "([I[F[F[F[I)I",
1285            (void*)android_location_GpsLocationProvider_read_sv_status},
1286    {"native_read_nmea", "([BI)I", (void*)android_location_GpsLocationProvider_read_nmea},
1287    {"native_inject_time", "(JJI)V", (void*)android_location_GpsLocationProvider_inject_time},
1288    {"native_inject_location",
1289            "(DDF)V",
1290            (void*)android_location_GpsLocationProvider_inject_location},
1291    {"native_supports_xtra", "()Z", (void*)android_location_GpsLocationProvider_supports_xtra},
1292    {"native_inject_xtra_data",
1293            "([BI)V",
1294            (void*)android_location_GpsLocationProvider_inject_xtra_data},
1295    {"native_agps_data_conn_open",
1296            "(Ljava/lang/String;I)V",
1297            (void*)android_location_GpsLocationProvider_agps_data_conn_open},
1298    {"native_agps_data_conn_closed",
1299            "()V",
1300            (void*)android_location_GpsLocationProvider_agps_data_conn_closed},
1301    {"native_agps_data_conn_failed",
1302            "()V",
1303            (void*)android_location_GpsLocationProvider_agps_data_conn_failed},
1304    {"native_agps_set_id",
1305            "(ILjava/lang/String;)V",
1306            (void*)android_location_GpsLocationProvider_agps_set_id},
1307    {"native_agps_set_ref_location_cellid",
1308            "(IIIII)V",
1309            (void*)android_location_GpsLocationProvider_agps_set_reference_location_cellid},
1310    {"native_set_agps_server",
1311            "(ILjava/lang/String;I)V",
1312            (void*)android_location_GpsLocationProvider_set_agps_server},
1313    {"native_send_ni_response",
1314            "(II)V",
1315            (void*)android_location_GpsLocationProvider_send_ni_response},
1316    {"native_agps_ni_message",
1317            "([BI)V",
1318            (void *)android_location_GpsLocationProvider_agps_send_ni_message},
1319    {"native_get_internal_state",
1320            "()Ljava/lang/String;",
1321            (void*)android_location_GpsLocationProvider_get_internal_state},
1322    {"native_update_network_state",
1323            "(ZIZZLjava/lang/String;Ljava/lang/String;)V",
1324            (void*)android_location_GpsLocationProvider_update_network_state },
1325    {"native_is_geofence_supported",
1326            "()Z",
1327            (void*) android_location_GpsLocationProvider_is_geofence_supported},
1328    {"native_add_geofence",
1329            "(IDDDIIII)Z",
1330            (void *)android_location_GpsLocationProvider_add_geofence},
1331    {"native_remove_geofence",
1332            "(I)Z",
1333            (void *)android_location_GpsLocationProvider_remove_geofence},
1334    {"native_pause_geofence", "(I)Z", (void *)android_location_GpsLocationProvider_pause_geofence},
1335    {"native_resume_geofence",
1336            "(II)Z",
1337            (void *)android_location_GpsLocationProvider_resume_geofence},
1338    {"native_is_measurement_supported",
1339            "()Z",
1340            (void*) android_location_GpsLocationProvider_is_measurement_supported},
1341    {"native_start_measurement_collection",
1342            "()Z",
1343            (void*) android_location_GpsLocationProvider_start_measurement_collection},
1344    {"native_stop_measurement_collection",
1345            "()Z",
1346            (void*) android_location_GpsLocationProvider_stop_measurement_collection}
1347};
1348
1349int register_android_server_location_GpsLocationProvider(JNIEnv* env)
1350{
1351    return jniRegisterNativeMethods(
1352            env,
1353            "com/android/server/location/GpsLocationProvider",
1354            sMethods,
1355            NELEM(sMethods));
1356}
1357
1358} /* namespace android */
1359