com_android_bluetooth_pan.cpp revision de396a46388269221b05dae2760be63fe7254748 
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, ...)  LOGI ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
24#define debug(fmt, ...) LOGD ("%s(L%d): " fmt,__FUNCTION__, __LINE__,  ## __VA_ARGS__)
25#define warn(fmt, ...) LOGW ("## WARNING : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
26#define error(fmt, ...) LOGE ("## ERROR : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__)
27#define asrt(s) if(!(s)) LOGE ("## %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}
55
56static void connection_state_callback(btpan_connection_state_t state, bt_status_t error, const bt_bdaddr_t *bd_addr,
57                                      int local_role, int remote_role) {
58    jbyteArray addr;
59    debug("state:%d, local_role:%d, remote_role:%d", state, local_role, remote_role);
60    CHECK_CALLBACK_ENV
61    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
62    if (!addr) {
63        error("Fail to new jbyteArray bd addr for PAN channel state");
64        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
65        return;
66    }
67    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);
68
69    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectStateChanged, addr, (jint) state,
70                                    (jint)error, (jint)local_role, (jint)remote_role);
71    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
72    sCallbackEnv->DeleteLocalRef(addr);
73}
74
75static btpan_callbacks_t sBluetoothPanCallbacks = {
76    sizeof(sBluetoothPanCallbacks),
77    control_state_callback,
78    connection_state_callback
79};
80
81// Define native functions
82
83static void classInitNative(JNIEnv* env, jclass clazz) {
84    int err;
85    bt_status_t status;
86
87    method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged",
88                                                    "([BIIII)V");
89    method_onControlStateChanged = env->GetMethodID(clazz, "onControlStateChanged",
90                                                    "(IIILjava/lang/String;)V");
91
92    info("succeeds");
93}
94static const bt_interface_t* btIf;
95
96static void initializeNative(JNIEnv *env, jobject object) {
97    debug("pan");
98    if(btIf)
99        return;
100
101    if ( (btIf = getBluetoothInterface()) == NULL) {
102        error("Bluetooth module is not loaded");
103        return;
104    }
105
106    if (sPanIf !=NULL) {
107         LOGW("Cleaning up Bluetooth PAN Interface before initializing...");
108         sPanIf->cleanup();
109         sPanIf = NULL;
110    }
111
112    if (mCallbacksObj != NULL) {
113         LOGW("Cleaning up Bluetooth PAN callback object");
114         env->DeleteGlobalRef(mCallbacksObj);
115         mCallbacksObj = NULL;
116    }
117
118    if ( (sPanIf = (btpan_interface_t *)
119          btIf->get_profile_interface(BT_PROFILE_PAN_ID)) == NULL) {
120        error("Failed to get Bluetooth PAN Interface");
121        return;
122    }
123
124    bt_status_t status;
125    if ( (status = sPanIf->init(&sBluetoothPanCallbacks)) != BT_STATUS_SUCCESS) {
126        error("Failed to initialize Bluetooth PAN, status: %d", status);
127        sPanIf = NULL;
128        return;
129    }
130
131    mCallbacksObj = env->NewGlobalRef(object);
132}
133
134static void cleanupNative(JNIEnv *env, jobject object) {
135    bt_status_t status;
136    if (!btIf) return;
137
138    if (sPanIf !=NULL) {
139        LOGW("Cleaning up Bluetooth PAN Interface...");
140        sPanIf->cleanup();
141        sPanIf = NULL;
142    }
143
144    if (mCallbacksObj != NULL) {
145        LOGW("Cleaning up Bluetooth PAN callback object");
146        env->DeleteGlobalRef(mCallbacksObj);
147        mCallbacksObj = NULL;
148    }
149    btIf = NULL;
150}
151
152static jboolean enablePanNative(JNIEnv *env, jobject object, jint local_role) {
153    bt_status_t status = BT_STATUS_FAIL;
154    debug("in");
155    jbyte *addr;
156    if (sPanIf)
157        status = sPanIf->enable(local_role);
158    debug("out");
159    return status == BT_STATUS_SUCCESS ? JNI_TRUE : JNI_FALSE;
160}
161static jint getPanLocalRoleNative(JNIEnv *env, jobject object) {
162    debug("in");
163    int local_role = 0;
164    jbyte *addr;
165    if (sPanIf)
166        local_role  = sPanIf->get_local_role();
167    debug("out");
168    return (jint)local_role;
169}
170
171
172
173static jboolean connectPanNative(JNIEnv *env, jobject object, jbyteArray address,
174                                 jint src_role, jint dest_role) {
175    debug("in");
176    bt_status_t status;
177    jbyte *addr;
178    jboolean ret = JNI_TRUE;
179    if (!sPanIf) return JNI_FALSE;
180
181    addr = env->GetByteArrayElements(address, NULL);
182    if (!addr) {
183        error("Bluetooth device address null");
184        return JNI_FALSE;
185    }
186
187    if ((status = sPanIf->connect((bt_bdaddr_t *) addr, src_role, dest_role)) !=
188         BT_STATUS_SUCCESS) {
189        error("Failed PAN channel connection, status: %d", status);
190        ret = JNI_FALSE;
191    }
192    env->ReleaseByteArrayElements(address, addr, 0);
193
194    return ret;
195}
196
197static jboolean disconnectPanNative(JNIEnv *env, jobject object, jbyteArray address) {
198    bt_status_t status;
199    jbyte *addr;
200    jboolean ret = JNI_TRUE;
201    if (!sPanIf) return JNI_FALSE;
202
203    addr = env->GetByteArrayElements(address, NULL);
204    if (!addr) {
205        error("Bluetooth device address null");
206        return JNI_FALSE;
207    }
208
209    if ( (status = sPanIf->disconnect((bt_bdaddr_t *) addr)) !=
210         BT_STATUS_SUCCESS) {
211        error("Failed disconnect pan channel, status: %d", status);
212        ret = JNI_FALSE;
213    }
214    env->ReleaseByteArrayElements(address, addr, 0);
215
216    return ret;
217}
218
219static JNINativeMethod sMethods[] = {
220    {"classInitNative", "()V", (void *) classInitNative},
221    {"initializeNative", "()V", (void *) initializeNative},
222    {"cleanupNative", "()V", (void *) cleanupNative},
223    {"connectPanNative", "([BII)Z", (void *) connectPanNative},
224    {"enablePanNative", "(I)Z", (void *) enablePanNative},
225    {"getPanLocalRoleNative", "()I", (void *) getPanLocalRoleNative},
226    {"disconnectPanNative", "([B)Z", (void *) disconnectPanNative},
227    // TBD cleanup
228};
229
230int register_com_android_bluetooth_pan(JNIEnv* env)
231{
232    return jniRegisterNativeMethods(env, "com/android/bluetooth/pan/PanService",
233                                    sMethods, NELEM(sMethods));
234}
235
236}
237