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 "BluetoothHealthServiceJni"
18
19#define LOG_NDEBUG 0
20
21#define CHECK_CALLBACK_ENV                                                      \
22   if (!checkCallbackThread()) {                                                \
23       ALOGE("Callback: '%s' is not called on the correct thread", __FUNCTION__);\
24       return;                                                                  \
25   }
26
27#include "com_android_bluetooth.h"
28#include "hardware/bt_hl.h"
29#include "utils/Log.h"
30#include "android_runtime/AndroidRuntime.h"
31
32#include <string.h>
33
34namespace android {
35
36static jmethodID method_onAppRegistrationState;
37static jmethodID method_onChannelStateChanged;
38
39static const bthl_interface_t *sBluetoothHdpInterface = NULL;
40static jobject mCallbacksObj = NULL;
41static JNIEnv *sCallbackEnv = NULL;
42
43static bool checkCallbackThread() {
44    sCallbackEnv = getCallbackEnv();
45
46    JNIEnv* env = AndroidRuntime::getJNIEnv();
47    if (sCallbackEnv != env || sCallbackEnv == NULL) {
48        ALOGE("Callback env check fail: env: %p, callback: %p", env, sCallbackEnv);
49        return false;
50    }
51    return true;
52}
53
54// Define callback functions
55static void app_registration_state_callback(int app_id, bthl_app_reg_state_t state) {
56    CHECK_CALLBACK_ENV
57    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onAppRegistrationState, app_id,
58                                 (jint) state);
59    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
60}
61
62static void channel_state_callback(int app_id, bt_bdaddr_t *bd_addr, int mdep_cfg_index,
63                                   int channel_id, bthl_channel_state_t state, int fd) {
64    jbyteArray addr;
65    jobject fileDescriptor = NULL;
66
67    CHECK_CALLBACK_ENV
68    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));
69    if (!addr) {
70        ALOGE("Fail to new jbyteArray bd addr for channel state");
71        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
72        return;
73    }
74
75    // TODO(BT) check if fd is only valid for BTHH_CONN_STATE_CONNECTED state
76    if (state == BTHL_CONN_STATE_CONNECTED) {
77        fileDescriptor = jniCreateFileDescriptor(sCallbackEnv, fd);
78        if (!fileDescriptor) {
79            ALOGE("Failed to convert file descriptor, fd: %d", fd);
80            sCallbackEnv->DeleteLocalRef(addr);
81            return;
82        }
83    }
84
85    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte*) bd_addr);
86    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onChannelStateChanged, app_id, addr,
87                                 mdep_cfg_index, channel_id, (jint) state, fileDescriptor);
88    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);
89    sCallbackEnv->DeleteLocalRef(addr);
90}
91
92static bthl_callbacks_t sBluetoothHdpCallbacks = {
93    sizeof(sBluetoothHdpCallbacks),
94    app_registration_state_callback,
95    channel_state_callback
96};
97
98// Define native functions
99
100static void classInitNative(JNIEnv* env, jclass clazz) {
101    int err;
102//    const bt_interface_t* btInf;
103//    bt_status_t status;
104
105    method_onAppRegistrationState = env->GetMethodID(clazz, "onAppRegistrationState", "(II)V");
106    method_onChannelStateChanged = env->GetMethodID(clazz, "onChannelStateChanged",
107                                                    "(I[BIIILjava/io/FileDescriptor;)V");
108
109/*
110    if ( (btInf = getBluetoothInterface()) == NULL) {
111        ALOGE("Bluetooth module is not loaded");
112        return;
113    }
114
115    if ( (sBluetoothHdpInterface = (bthl_interface_t *)
116          btInf->get_profile_interface(BT_PROFILE_HEALTH_ID)) == NULL) {
117        ALOGE("Failed to get Bluetooth Handsfree Interface");
118        return;
119    }
120
121    // TODO(BT) do this only once or
122    //          Do we need to do this every time the BT reenables?
123    if ( (status = sBluetoothHdpInterface->init(&sBluetoothHdpCallbacks)) != BT_STATUS_SUCCESS) {
124        ALOGE("Failed to initialize Bluetooth HDP, status: %d", status);
125        sBluetoothHdpInterface = NULL;
126        return;
127    }
128*/
129
130    ALOGI("%s: succeeds", __FUNCTION__);
131}
132
133static void initializeNative(JNIEnv *env, jobject object) {
134    const bt_interface_t* btInf;
135    bt_status_t status;
136
137    if ( (btInf = getBluetoothInterface()) == NULL) {
138        ALOGE("Bluetooth module is not loaded");
139        return;
140    }
141
142    if (sBluetoothHdpInterface !=NULL) {
143         ALOGW("Cleaning up Bluetooth Health Interface before initializing...");
144         sBluetoothHdpInterface->cleanup();
145         sBluetoothHdpInterface = NULL;
146    }
147
148    if (mCallbacksObj != NULL) {
149         ALOGW("Cleaning up Bluetooth Health callback object");
150         env->DeleteGlobalRef(mCallbacksObj);
151         mCallbacksObj = NULL;
152    }
153
154    if ( (sBluetoothHdpInterface = (bthl_interface_t *)
155          btInf->get_profile_interface(BT_PROFILE_HEALTH_ID)) == NULL) {
156        ALOGE("Failed to get Bluetooth Health Interface");
157        return;
158    }
159
160    if ( (status = sBluetoothHdpInterface->init(&sBluetoothHdpCallbacks)) != BT_STATUS_SUCCESS) {
161        ALOGE("Failed to initialize Bluetooth HDP, status: %d", status);
162        sBluetoothHdpInterface = NULL;
163        return;
164    }
165
166    mCallbacksObj = env->NewGlobalRef(object);
167}
168
169static void cleanupNative(JNIEnv *env, jobject object) {
170    const bt_interface_t* btInf;
171    bt_status_t status;
172
173    if ( (btInf = getBluetoothInterface()) == NULL) {
174        ALOGE("Bluetooth module is not loaded");
175        return;
176    }
177
178    if (sBluetoothHdpInterface !=NULL) {
179        ALOGW("Cleaning up Bluetooth Health Interface...");
180        sBluetoothHdpInterface->cleanup();
181        sBluetoothHdpInterface = NULL;
182    }
183
184    if (mCallbacksObj != NULL) {
185        ALOGW("Cleaning up Bluetooth Health object");
186        env->DeleteGlobalRef(mCallbacksObj);
187        mCallbacksObj = NULL;
188    }
189}
190
191static jint registerHealthAppNative(JNIEnv *env, jobject object, jint data_type,
192                                       jint role, jstring name, jint channel_type) {
193    bt_status_t status;
194    bthl_mdep_cfg_t mdep_cfg;
195    bthl_reg_param_t reg_param;
196    int app_id;
197
198    if (!sBluetoothHdpInterface) return NULL;
199
200    mdep_cfg.mdep_role = (bthl_mdep_role_t) role;
201    mdep_cfg.data_type = data_type;
202    mdep_cfg.channel_type = (bthl_channel_type_t) channel_type;
203    // TODO(BT) pass all the followings in from java instead of reuse name
204    mdep_cfg.mdep_description = env->GetStringUTFChars(name, NULL);
205    reg_param.application_name = env->GetStringUTFChars(name, NULL);
206    reg_param.provider_name = NULL;
207    reg_param.srv_name = NULL;
208    reg_param.srv_desp = NULL;
209    reg_param.number_of_mdeps = 1;
210    reg_param.mdep_cfg = &mdep_cfg;
211
212    if ( (status = sBluetoothHdpInterface->register_application(&reg_param, &app_id)) !=
213         BT_STATUS_SUCCESS) {
214        ALOGE("Failed register health app, status: %d", status);
215        return -1;
216    }
217
218    env->ReleaseStringUTFChars(name, mdep_cfg.mdep_description);
219    env->ReleaseStringUTFChars(name, reg_param.application_name);
220    return app_id;
221}
222
223static jboolean unregisterHealthAppNative(JNIEnv *env, jobject object, int app_id) {
224    bt_status_t status;
225    if (!sBluetoothHdpInterface) return JNI_FALSE;
226
227    if ((status = sBluetoothHdpInterface->unregister_application(app_id)) != BT_STATUS_SUCCESS) {
228        ALOGE("Failed to unregister app %d, status: %d", app_id, status);
229    }
230    return (status == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
231}
232
233static jint connectChannelNative(JNIEnv *env, jobject object,
234                                 jbyteArray address, jint app_id) {
235    bt_status_t status;
236    jbyte *addr;
237    jint chan_id;
238    if (!sBluetoothHdpInterface) return -1;
239
240    addr = env->GetByteArrayElements(address, NULL);
241    if (!addr) {
242        ALOGE("Bluetooth device address null");
243        return -1;
244    }
245
246    if ( (status = sBluetoothHdpInterface->connect_channel(app_id, (bt_bdaddr_t *) addr,
247                                                           0, &chan_id)) !=
248         BT_STATUS_SUCCESS) {
249        ALOGE("Failed HDP channel connection, status: %d", status);
250        chan_id = -1;
251    }
252    env->ReleaseByteArrayElements(address, addr, 0);
253
254    return chan_id;
255}
256
257static jboolean disconnectChannelNative(JNIEnv *env, jobject object, jint channel_id) {
258    bt_status_t status;
259    if (!sBluetoothHdpInterface) return JNI_FALSE;
260
261    if ( (status = sBluetoothHdpInterface->destroy_channel(channel_id)) !=
262         BT_STATUS_SUCCESS) {
263        ALOGE("Failed disconnect health channel, status: %d", status);
264        return JNI_FALSE;
265    }
266    return JNI_TRUE;
267}
268
269static JNINativeMethod sMethods[] = {
270    {"classInitNative", "()V", (void *) classInitNative},
271    {"initializeNative", "()V", (void *) initializeNative},
272    {"cleanupNative", "()V", (void *) cleanupNative},
273    {"registerHealthAppNative", "(IILjava/lang/String;I)I", (void *) registerHealthAppNative},
274    {"unregisterHealthAppNative", "(I)Z", (void *) unregisterHealthAppNative},
275    {"connectChannelNative", "([BI)I", (void *) connectChannelNative},
276    {"disconnectChannelNative", "(I)Z", (void *) disconnectChannelNative},
277};
278
279int register_com_android_bluetooth_hdp(JNIEnv* env)
280{
281    return jniRegisterNativeMethods(env, "com/android/bluetooth/hdp/HealthService",
282                                    sMethods, NELEM(sMethods));
283}
284
285}
286