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 "BluetoothPanServiceJni"
18
19 #define LOG_NDEBUG 0
20
21 #define CHECK_CALLBACK_ENV \
22 if (!checkCallbackThread()) { \
23 error("Callback: '%s' is not called on the correct thread", __FUNCTION__);\
24 return; \
25 }
26
27 #include "com_android_bluetooth.h"
28 #include "hardware/bt_pan.h"
29 #include "utils/Log.h"
30 #include "android_runtime/AndroidRuntime.h"
31
32 #include <string.h>
33
34 #include <cutils/log.h>
35 #define info(fmt, ...) ALOGI ("%s(L%d): " fmt,__FUNCTION__, __LINE__, ## __VA_ARGS__)
36 #define debug(fmt, ...) ALOGD ("%s(L%d): " fmt,__FUNCTION__, __LINE__, ## __VA_ARGS__)
37 #define warn(fmt, ...) ALOGW ("## WARNING : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
38 #define error(fmt, ...) ALOGE ("## ERROR : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
39 #define asrt(s) if(!(s)) ALOGE ("## %s(L%d): ASSERT %s failed! ##",__FUNCTION__, __LINE__, #s)
40
41
42 namespace android {
43
44 static jmethodID method_onConnectStateChanged;
45 static jmethodID method_onControlStateChanged;
46
47 static const btpan_interface_t *sPanIf = NULL;
48 static jobject mCallbacksObj = NULL;
49 static JNIEnv *sCallbackEnv = NULL;
50
checkCallbackThread()51 static bool checkCallbackThread() {
52 sCallbackEnv = getCallbackEnv();
53
54 JNIEnv* env = AndroidRuntime::getJNIEnv();
55 if (sCallbackEnv != env || sCallbackEnv == NULL) return false;
56 return true;
57 }
58
control_state_callback(btpan_control_state_t state,bt_status_t error,int local_role,const char * ifname)59 static void control_state_callback(btpan_control_state_t state, bt_status_t error, int local_role,
60 const char* ifname) {
61 debug("state:%d, local_role:%d, ifname:%s", state, local_role, ifname);
62 CHECK_CALLBACK_ENV
63 jstring js_ifname = sCallbackEnv->NewStringUTF(ifname);
64 sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onControlStateChanged, (jint)state, (jint)error,
65 (jint)local_role, js_ifname);
66 sCallbackEnv->DeleteLocalRef(js_ifname);
67 }
68
connection_state_callback(btpan_connection_state_t state,bt_status_t error,const bt_bdaddr_t * bd_addr,int local_role,int remote_role)69 static void connection_state_callback(btpan_connection_state_t state, bt_status_t error, const bt_bdaddr_t *bd_addr,
70 int local_role, int remote_role) {
71 jbyteArray addr;
72 debug("state:%d, local_role:%d, remote_role:%d", state, local_role, remote_role);
73 CHECK_CALLBACK_ENV
74 addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
75 if (!addr) {
76 error("Fail to new jbyteArray bd addr for PAN channel state");
77 checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
78 return;
79 }
80 sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);
81
82 sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectStateChanged, addr, (jint) state,
83 (jint)error, (jint)local_role, (jint)remote_role);
84 checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
85 sCallbackEnv->DeleteLocalRef(addr);
86 }
87
88 static btpan_callbacks_t sBluetoothPanCallbacks = {
89 sizeof(sBluetoothPanCallbacks),
90 control_state_callback,
91 connection_state_callback
92 };
93
94 // Define native functions
95
classInitNative(JNIEnv * env,jclass clazz)96 static void classInitNative(JNIEnv* env, jclass clazz) {
97 int err;
98 bt_status_t status;
99
100 method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged",
101 "([BIIII)V");
102 method_onControlStateChanged = env->GetMethodID(clazz, "onControlStateChanged",
103 "(IIILjava/lang/String;)V");
104
105 info("succeeds");
106 }
107 static const bt_interface_t* btIf;
108
initializeNative(JNIEnv * env,jobject object)109 static void initializeNative(JNIEnv *env, jobject object) {
110 debug("pan");
111 if(btIf)
112 return;
113
114 if ( (btIf = getBluetoothInterface()) == NULL) {
115 error("Bluetooth module is not loaded");
116 return;
117 }
118
119 if (sPanIf !=NULL) {
120 ALOGW("Cleaning up Bluetooth PAN Interface before initializing...");
121 sPanIf->cleanup();
122 sPanIf = NULL;
123 }
124
125 if (mCallbacksObj != NULL) {
126 ALOGW("Cleaning up Bluetooth PAN callback object");
127 env->DeleteGlobalRef(mCallbacksObj);
128 mCallbacksObj = NULL;
129 }
130
131 if ( (sPanIf = (btpan_interface_t *)
132 btIf->get_profile_interface(BT_PROFILE_PAN_ID)) == NULL) {
133 error("Failed to get Bluetooth PAN Interface");
134 return;
135 }
136
137 bt_status_t status;
138 if ( (status = sPanIf->init(&sBluetoothPanCallbacks)) != BT_STATUS_SUCCESS) {
139 error("Failed to initialize Bluetooth PAN, status: %d", status);
140 sPanIf = NULL;
141 return;
142 }
143
144 mCallbacksObj = env->NewGlobalRef(object);
145 }
146
cleanupNative(JNIEnv * env,jobject object)147 static void cleanupNative(JNIEnv *env, jobject object) {
148 bt_status_t status;
149 if (!btIf) return;
150
151 if (sPanIf !=NULL) {
152 ALOGW("Cleaning up Bluetooth PAN Interface...");
153 sPanIf->cleanup();
154 sPanIf = NULL;
155 }
156
157 if (mCallbacksObj != NULL) {
158 ALOGW("Cleaning up Bluetooth PAN callback object");
159 env->DeleteGlobalRef(mCallbacksObj);
160 mCallbacksObj = NULL;
161 }
162 btIf = NULL;
163 }
164
enablePanNative(JNIEnv * env,jobject object,jint local_role)165 static jboolean enablePanNative(JNIEnv *env, jobject object, jint local_role) {
166 bt_status_t status = BT_STATUS_FAIL;
167 debug("in");
168 jbyte *addr;
169 if (sPanIf)
170 status = sPanIf->enable(local_role);
171 debug("out");
172 return status == BT_STATUS_SUCCESS ? JNI_TRUE : JNI_FALSE;
173 }
getPanLocalRoleNative(JNIEnv * env,jobject object)174 static jint getPanLocalRoleNative(JNIEnv *env, jobject object) {
175 debug("in");
176 int local_role = 0;
177 jbyte *addr;
178 if (sPanIf)
179 local_role = sPanIf->get_local_role();
180 debug("out");
181 return (jint)local_role;
182 }
183
184
185
connectPanNative(JNIEnv * env,jobject object,jbyteArray address,jint src_role,jint dest_role)186 static jboolean connectPanNative(JNIEnv *env, jobject object, jbyteArray address,
187 jint src_role, jint dest_role) {
188 debug("in");
189 bt_status_t status;
190 jbyte *addr;
191 jboolean ret = JNI_TRUE;
192 if (!sPanIf) return JNI_FALSE;
193
194 addr = env->GetByteArrayElements(address, NULL);
195 if (!addr) {
196 error("Bluetooth device address null");
197 return JNI_FALSE;
198 }
199
200 if ((status = sPanIf->connect((bt_bdaddr_t *) addr, src_role, dest_role)) !=
201 BT_STATUS_SUCCESS) {
202 error("Failed PAN channel connection, status: %d", status);
203 ret = JNI_FALSE;
204 }
205 env->ReleaseByteArrayElements(address, addr, 0);
206
207 return ret;
208 }
209
disconnectPanNative(JNIEnv * env,jobject object,jbyteArray address)210 static jboolean disconnectPanNative(JNIEnv *env, jobject object, jbyteArray address) {
211 bt_status_t status;
212 jbyte *addr;
213 jboolean ret = JNI_TRUE;
214 if (!sPanIf) return JNI_FALSE;
215
216 addr = env->GetByteArrayElements(address, NULL);
217 if (!addr) {
218 error("Bluetooth device address null");
219 return JNI_FALSE;
220 }
221
222 if ( (status = sPanIf->disconnect((bt_bdaddr_t *) addr)) !=
223 BT_STATUS_SUCCESS) {
224 error("Failed disconnect pan channel, status: %d", status);
225 ret = JNI_FALSE;
226 }
227 env->ReleaseByteArrayElements(address, addr, 0);
228
229 return ret;
230 }
231
232 static JNINativeMethod sMethods[] = {
233 {"classInitNative", "()V", (void *) classInitNative},
234 {"initializeNative", "()V", (void *) initializeNative},
235 {"cleanupNative", "()V", (void *) cleanupNative},
236 {"connectPanNative", "([BII)Z", (void *) connectPanNative},
237 {"enablePanNative", "(I)Z", (void *) enablePanNative},
238 {"getPanLocalRoleNative", "()I", (void *) getPanLocalRoleNative},
239 {"disconnectPanNative", "([B)Z", (void *) disconnectPanNative},
240 // TBD cleanup
241 };
242
register_com_android_bluetooth_pan(JNIEnv * env)243 int register_com_android_bluetooth_pan(JNIEnv* env)
244 {
245 return jniRegisterNativeMethods(env, "com/android/bluetooth/pan/PanService",
246 sMethods, NELEM(sMethods));
247 }
248
249 }
250