com_android_bluetooth_pan.cpp revision 3237754f492015699fc91508d76c2e123d6f3c42 
1/*
2 * Copyright (C) 2012 Google Inc.
3 */
4
5#define LOG_TAG "BluetoothPanServiceJni"
6
7#define LOG_NDEBUG 0
8
9#define CHECK_CALLBACK_ENV                                                      \
10   if (!checkCallbackThread()) {                                                \
11       error("Callback: '%s' is not called on the correct thread", __FUNCTION__);\
12       return;                                                                  \
13   }
14
15#include "com_android_bluetooth.h"
16#include "hardware/bt_pan.h"
17#include "utils/Log.h"
18#include "android_runtime/AndroidRuntime.h"
19
20#include <string.h>
21
22#include <cutils/log.h>
23#define info(fmt, ...)  ALOGI ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
24#define debug(fmt, ...) ALOGD ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
25#define warn(fmt, ...) ALOGW ("## WARNING : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
26#define error(fmt, ...) ALOGE ("## ERROR : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
27#define asrt(s) if(!(s)) ALOGE ("## %s(L%d): ASSERT %s failed! ##",__FUNCTION__, __LINE__, #s)
28
29
30namespace android {
31
32static jmethodID method_onConnectStateChanged;
33static jmethodID method_onControlStateChanged;
34
35static const btpan_interface_t *sPanIf = NULL;
36static jobject mCallbacksObj = NULL;
37static JNIEnv *sCallbackEnv = NULL;
38
39static bool checkCallbackThread() {
40    sCallbackEnv = getCallbackEnv();
41
42    JNIEnv* env = AndroidRuntime::getJNIEnv();
43    if (sCallbackEnv != env || sCallbackEnv == NULL) return false;
44    return true;
45}
46
47static void control_state_callback(btpan_control_state_t state, bt_status_t error, int local_role,
48                const char* ifname) {
49    debug("state:%d, local_role:%d, ifname:%s", state, local_role, ifname);
50    CHECK_CALLBACK_ENV
51    jstring js_ifname = sCallbackEnv->NewStringUTF(ifname);
52    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onControlStateChanged, (jint)state, (jint)error,
53                                (jint)local_role, js_ifname);
54    sCallbackEnv->DeleteLocalRef(js_ifname);
55}
56
57static void connection_state_callback(btpan_connection_state_t state, bt_status_t error, const bt_bdaddr_t *bd_addr,
58                                      int local_role, int remote_role) {
59    jbyteArray addr;
60    debug("state:%d, local_role:%d, remote_role:%d", state, local_role, remote_role);
61    CHECK_CALLBACK_ENV
62    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
63    if (!addr) {
64        error("Fail to new jbyteArray bd addr for PAN channel state");
65        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
66        return;
67    }
68    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);
69
70    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectStateChanged, addr, (jint) state,
71                                    (jint)error, (jint)local_role, (jint)remote_role);
72    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
73    sCallbackEnv->DeleteLocalRef(addr);
74}
75
76static btpan_callbacks_t sBluetoothPanCallbacks = {
77    sizeof(sBluetoothPanCallbacks),
78    control_state_callback,
79    connection_state_callback
80};
81
82// Define native functions
83
84static void classInitNative(JNIEnv* env, jclass clazz) {
85    int err;
86    bt_status_t status;
87
88    method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged",
89                                                    "([BIIII)V");
90    method_onControlStateChanged = env->GetMethodID(clazz, "onControlStateChanged",
91                                                    "(IIILjava/lang/String;)V");
92
93    info("succeeds");
94}
95static const bt_interface_t* btIf;
96
97static void initializeNative(JNIEnv *env, jobject object) {
98    debug("pan");
99    if(btIf)
100        return;
101
102    if ( (btIf = getBluetoothInterface()) == NULL) {
103        error("Bluetooth module is not loaded");
104        return;
105    }
106
107    if (sPanIf !=NULL) {
108         ALOGW("Cleaning up Bluetooth PAN Interface before initializing...");
109         sPanIf->cleanup();
110         sPanIf = NULL;
111    }
112
113    if (mCallbacksObj != NULL) {
114         ALOGW("Cleaning up Bluetooth PAN callback object");
115         env->DeleteGlobalRef(mCallbacksObj);
116         mCallbacksObj = NULL;
117    }
118
119    if ( (sPanIf = (btpan_interface_t *)
120          btIf->get_profile_interface(BT_PROFILE_PAN_ID)) == NULL) {
121        error("Failed to get Bluetooth PAN Interface");
122        return;
123    }
124
125    bt_status_t status;
126    if ( (status = sPanIf->init(&sBluetoothPanCallbacks)) != BT_STATUS_SUCCESS) {
127        error("Failed to initialize Bluetooth PAN, status: %d", status);
128        sPanIf = NULL;
129        return;
130    }
131
132    mCallbacksObj = env->NewGlobalRef(object);
133}
134
135static void cleanupNative(JNIEnv *env, jobject object) {
136    bt_status_t status;
137    if (!btIf) return;
138
139    if (sPanIf !=NULL) {
140        ALOGW("Cleaning up Bluetooth PAN Interface...");
141        sPanIf->cleanup();
142        sPanIf = NULL;
143    }
144
145    if (mCallbacksObj != NULL) {
146        ALOGW("Cleaning up Bluetooth PAN callback object");
147        env->DeleteGlobalRef(mCallbacksObj);
148        mCallbacksObj = NULL;
149    }
150    btIf = NULL;
151}
152
153static jboolean enablePanNative(JNIEnv *env, jobject object, jint local_role) {
154    bt_status_t status = BT_STATUS_FAIL;
155    debug("in");
156    jbyte *addr;
157    if (sPanIf)
158        status = sPanIf->enable(local_role);
159    debug("out");
160    return status == BT_STATUS_SUCCESS ? JNI_TRUE : JNI_FALSE;
161}
162static jint getPanLocalRoleNative(JNIEnv *env, jobject object) {
163    debug("in");
164    int local_role = 0;
165    jbyte *addr;
166    if (sPanIf)
167        local_role  = sPanIf->get_local_role();
168    debug("out");
169    return (jint)local_role;
170}
171
172
173
174static jboolean connectPanNative(JNIEnv *env, jobject object, jbyteArray address,
175                                 jint src_role, jint dest_role) {
176    debug("in");
177    bt_status_t status;
178    jbyte *addr;
179    jboolean ret = JNI_TRUE;
180    if (!sPanIf) return JNI_FALSE;
181
182    addr = env->GetByteArrayElements(address, NULL);
183    if (!addr) {
184        error("Bluetooth device address null");
185        return JNI_FALSE;
186    }
187
188    if ((status = sPanIf->connect((bt_bdaddr_t *) addr, src_role, dest_role)) !=
189         BT_STATUS_SUCCESS) {
190        error("Failed PAN channel connection, status: %d", status);
191        ret = JNI_FALSE;
192    }
193    env->ReleaseByteArrayElements(address, addr, 0);
194
195    return ret;
196}
197
198static jboolean disconnectPanNative(JNIEnv *env, jobject object, jbyteArray address) {
199    bt_status_t status;
200    jbyte *addr;
201    jboolean ret = JNI_TRUE;
202    if (!sPanIf) return JNI_FALSE;
203
204    addr = env->GetByteArrayElements(address, NULL);
205    if (!addr) {
206        error("Bluetooth device address null");
207        return JNI_FALSE;
208    }
209
210    if ( (status = sPanIf->disconnect((bt_bdaddr_t *) addr)) !=
211         BT_STATUS_SUCCESS) {
212        error("Failed disconnect pan channel, status: %d", status);
213        ret = JNI_FALSE;
214    }
215    env->ReleaseByteArrayElements(address, addr, 0);
216
217    return ret;
218}
219
220static JNINativeMethod sMethods[] = {
221    {"classInitNative", "()V", (void *) classInitNative},
222    {"initializeNative", "()V", (void *) initializeNative},
223    {"cleanupNative", "()V", (void *) cleanupNative},
224    {"connectPanNative", "([BII)Z", (void *) connectPanNative},
225    {"enablePanNative", "(I)Z", (void *) enablePanNative},
226    {"getPanLocalRoleNative", "()I", (void *) getPanLocalRoleNative},
227    {"disconnectPanNative", "([B)Z", (void *) disconnectPanNative},
228    // TBD cleanup
229};
230
231int register_com_android_bluetooth_pan(JNIEnv* env)
232{
233    return jniRegisterNativeMethods(env, "com/android/bluetooth/pan/PanService",
234                                    sMethods, NELEM(sMethods));
235}
236
237}
238