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Commit 38befc68 authored by Hemant Gupta's avatar Hemant Gupta Committed by Linux Build Service Account
Browse files

Initial commit for HID Client 

This patch just renames files from existing hid host
which were referred for design while developing
hid client feature.

Orignal files that were renamed to new files are
jni/com_android_bluetooth_hid.cpp and
src/com/android/bluetooth/hid/HidService.java

Change-Id: Id1e00a3f3fa4df5ff81503767907b192fa4c4929
parent f3657534

jni/com_android_bluetooth_hidd.cpp

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+500 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2012 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#define LOG_TAG "BluetoothHidServiceJni"



#define LOG_NDEBUG 0



#define CHECK_CALLBACK_ENV                                                      \

   if (!checkCallbackThread()) {                                                \

       ALOGE("Callback: '%s' is not called on the correct thread", __FUNCTION__);\

       return;                                                                  \

   }



#include "com_android_bluetooth.h"

#include "hardware/bt_hh.h"

#include "utils/Log.h"

#include "android_runtime/AndroidRuntime.h"



#include <string.h>



namespace android {



static jmethodID method_onConnectStateChanged;

static jmethodID method_onGetProtocolMode;

static jmethodID method_onGetReport;

static jmethodID method_onVirtualUnplug;



static const bthh_interface_t *sBluetoothHidInterface = NULL;

static jobject mCallbacksObj = NULL;

static JNIEnv *sCallbackEnv = NULL;



static bool checkCallbackThread() {



    // Always fetch the latest callbackEnv from AdapterService.

    // Caching this could cause this sCallbackEnv to go out-of-sync

    // with the AdapterService's ENV if an ASSOCIATE/DISASSOCIATE event

    // is received



    sCallbackEnv = getCallbackEnv();



    JNIEnv* env = AndroidRuntime::getJNIEnv();

    if (sCallbackEnv != env || sCallbackEnv == NULL) return false;

    return true;

}



static void connection_state_callback(bt_bdaddr_t *bd_addr, bthh_connection_state_t state) {

    jbyteArray addr;



    CHECK_CALLBACK_ENV

    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));

    if (!addr) {

        ALOGE("Fail to new jbyteArray bd addr for HID channel state");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }

    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);



    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectStateChanged, addr, (jint) state);

    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

    sCallbackEnv->DeleteLocalRef(addr);

}



static void get_protocol_mode_callback(bt_bdaddr_t *bd_addr, bthh_status_t hh_status,bthh_protocol_mode_t mode) {

    jbyteArray addr;



    CHECK_CALLBACK_ENV

    if (hh_status != BTHH_OK) {

        ALOGE("BTHH Status is not OK!");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }



    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));

    if (!addr) {

        ALOGE("Fail to new jbyteArray bd addr for get protocal mode callback");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }

    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);



    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onGetProtocolMode, addr, (jint) mode);

    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

    sCallbackEnv->DeleteLocalRef(addr);

}



static void get_report_callback(bt_bdaddr_t *bd_addr, bthh_status_t hh_status, uint8_t *rpt_data, int rpt_size) {

    jbyteArray addr;

    jbyteArray data;



    CHECK_CALLBACK_ENV

    if (hh_status != BTHH_OK) {

        ALOGE("BTHH Status is not OK!");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }



    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));

    if (!addr) {

        ALOGE("Fail to new jbyteArray bd addr for get report callback");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }

    data = sCallbackEnv->NewByteArray(rpt_size);

    if (!data) {

        ALOGE("Fail to new jbyteArray data for get report callback");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        sCallbackEnv->DeleteLocalRef(addr);

        return;

    }



    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);

    sCallbackEnv->SetByteArrayRegion(data, 0, rpt_size, (jbyte *) rpt_data);



    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onGetReport, addr, data, (jint) rpt_size);

    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

    sCallbackEnv->DeleteLocalRef(addr);

    sCallbackEnv->DeleteLocalRef(data);

}



static void virtual_unplug_callback(bt_bdaddr_t *bd_addr, bthh_status_t hh_status) {

    ALOGD("call to virtual_unplug_callback");

    jbyteArray addr;



    CHECK_CALLBACK_ENV

    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));

    if (!addr) {

        ALOGE("Fail to new jbyteArray bd addr for HID channel state");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }

    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);



    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onVirtualUnplug, addr, (jint) hh_status);

    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

    sCallbackEnv->DeleteLocalRef(addr);



    /*jbyteArray addr;

    jint status = hh_status;

    CHECK_CALLBACK_ENV

    addr = sCallbackEnv->NewByteArray(sizeof(bt_bdaddr_t));

    if (!addr) {

        ALOGE("Fail to new jbyteArray bd addr for HID report");

        checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

        return;

    }

    sCallbackEnv->SetByteArrayRegion(addr, 0, sizeof(bt_bdaddr_t), (jbyte *) bd_addr);



    sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onVirtualUnplug, addr, status);

    checkAndClearExceptionFromCallback(sCallbackEnv, __FUNCTION__);

    sCallbackEnv->DeleteLocalRef(addr);*/

}





static bthh_callbacks_t sBluetoothHidCallbacks = {

    sizeof(sBluetoothHidCallbacks),

    connection_state_callback,

    NULL,

    get_protocol_mode_callback,

    NULL,

    get_report_callback,

    virtual_unplug_callback

};



// Define native functions



static void classInitNative(JNIEnv* env, jclass clazz) {

    int err;

//    const bt_interface_t* btInf;

//    bt_status_t status;



    method_onConnectStateChanged = env->GetMethodID(clazz, "onConnectStateChanged", "([BI)V");

    method_onGetProtocolMode = env->GetMethodID(clazz, "onGetProtocolMode", "([BI)V");

    method_onGetReport = env->GetMethodID(clazz, "onGetReport", "([B[BI)V");

    method_onVirtualUnplug = env->GetMethodID(clazz, "onVirtualUnplug", "([BI)V");



/*

    if ( (btInf = getBluetoothInterface()) == NULL) {

        ALOGE("Bluetooth module is not loaded");

        return;

    }



    if ( (sBluetoothHidInterface = (bthh_interface_t *)

          btInf->get_profile_interface(BT_PROFILE_HIDHOST_ID)) == NULL) {

        ALOGE("Failed to get Bluetooth Handsfree Interface");

        return;

    }



    // TODO(BT) do this only once or

    //          Do we need to do this every time the BT reenables?

    if ( (status = sBluetoothHidInterface->init(&sBluetoothHidCallbacks)) != BT_STATUS_SUCCESS) {

        ALOGE("Failed to initialize Bluetooth HID, status: %d", status);

        sBluetoothHidInterface = NULL;

        return;

    }



*/

    ALOGI("%s: succeeds", __FUNCTION__);

}



static void initializeNative(JNIEnv *env, jobject object) {

    const bt_interface_t* btInf;

    bt_status_t status;



    if ( (btInf = getBluetoothInterface()) == NULL) {

        ALOGE("Bluetooth module is not loaded");

        return;

    }



    if (sBluetoothHidInterface !=NULL) {

        ALOGW("Cleaning up Bluetooth HID Interface before initializing...");

        sBluetoothHidInterface->cleanup();

        sBluetoothHidInterface = NULL;

    }



    if (mCallbacksObj != NULL) {

        ALOGW("Cleaning up Bluetooth GID callback object");

        env->DeleteGlobalRef(mCallbacksObj);

        mCallbacksObj = NULL;

    }





    if ( (sBluetoothHidInterface = (bthh_interface_t *)

          btInf->get_profile_interface(BT_PROFILE_HIDHOST_ID)) == NULL) {

        ALOGE("Failed to get Bluetooth HID Interface");

        return;

    }



    if ( (status = sBluetoothHidInterface->init(&sBluetoothHidCallbacks)) != BT_STATUS_SUCCESS) {

        ALOGE("Failed to initialize Bluetooth HID, status: %d", status);

        sBluetoothHidInterface = NULL;

        return;

    }







    mCallbacksObj = env->NewGlobalRef(object);

}



static void cleanupNative(JNIEnv *env, jobject object) {

    const bt_interface_t* btInf;

    bt_status_t status;



    if ( (btInf = getBluetoothInterface()) == NULL) {

        ALOGE("Bluetooth module is not loaded");

        return;

    }



    if (sBluetoothHidInterface !=NULL) {

        ALOGW("Cleaning up Bluetooth HID Interface...");

        sBluetoothHidInterface->cleanup();

        sBluetoothHidInterface = NULL;

    }



    if (mCallbacksObj != NULL) {

        ALOGW("Cleaning up Bluetooth GID callback object");

        env->DeleteGlobalRef(mCallbacksObj);

        mCallbacksObj = NULL;

    }



    env->DeleteGlobalRef(mCallbacksObj);

}



static jboolean connectHidNative(JNIEnv *env, jobject object, jbyteArray address) {

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }



    if ((status = sBluetoothHidInterface->connect((bt_bdaddr_t *) addr)) !=

         BT_STATUS_SUCCESS) {

        ALOGE("Failed HID channel connection, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;

}



static jboolean disconnectHidNative(JNIEnv *env, jobject object, jbyteArray address) {

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }



    if ( (status = sBluetoothHidInterface->disconnect((bt_bdaddr_t *) addr)) !=

         BT_STATUS_SUCCESS) {

        ALOGE("Failed disconnect hid channel, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;

}



static jboolean getProtocolModeNative(JNIEnv *env, jobject object, jbyteArray address) {

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    bthh_protocol_mode_t protocolMode;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }



    if ( (status = sBluetoothHidInterface->get_protocol((bt_bdaddr_t *) addr, (bthh_protocol_mode_t) protocolMode)) !=

         BT_STATUS_SUCCESS) {

        ALOGE("Failed get protocol mode, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;

}



static jboolean virtualUnPlugNative(JNIEnv *env, jobject object, jbyteArray address) {

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

        if (!addr) {

            ALOGE("Bluetooth device address null");

            return JNI_FALSE;

        }

    if ( (status = sBluetoothHidInterface->virtual_unplug((bt_bdaddr_t *) addr)) !=

             BT_STATUS_SUCCESS) {

        ALOGE("Failed virual unplug, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);

    return ret;



}





static jboolean setProtocolModeNative(JNIEnv *env, jobject object, jbyteArray address, jint protocolMode) {

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    ALOGD("%s: protocolMode = %d", __FUNCTION__, protocolMode);



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }



    bthh_protocol_mode_t mode;

    switch(protocolMode){

        case 0:

            mode = BTHH_REPORT_MODE;

            break;

        case 1:

            mode = BTHH_BOOT_MODE;

            break;

        default:

            ALOGE("Unknown HID protocol mode");

            return JNI_FALSE;

    }

    if ( (status = sBluetoothHidInterface->set_protocol((bt_bdaddr_t *) addr, mode)) !=

             BT_STATUS_SUCCESS) {

        ALOGE("Failed set protocol mode, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);



    return JNI_TRUE;

}



static jboolean getReportNative(JNIEnv *env, jobject object, jbyteArray address, jbyte reportType, jbyte reportId, jint bufferSize) {

    ALOGD("%s: reportType = %d, reportId = %d, bufferSize = %d", __FUNCTION__, reportType, reportId, bufferSize);



    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }



    jint rType = reportType;

    jint rId = reportId;



    if ( (status = sBluetoothHidInterface->get_report((bt_bdaddr_t *) addr, (bthh_report_type_t) rType, (uint8_t) rId, bufferSize)) !=

             BT_STATUS_SUCCESS) {

        ALOGE("Failed get report, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;

}





static jboolean setReportNative(JNIEnv *env, jobject object, jbyteArray address, jbyte reportType, jstring report) {

    ALOGD("%s: reportType = %d", __FUNCTION__, reportType);

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }

    jint rType = reportType;

    const char *c_report = env->GetStringUTFChars(report, NULL);



    if ( (status = sBluetoothHidInterface->set_report((bt_bdaddr_t *) addr, (bthh_report_type_t)rType, (char*) c_report)) !=

             BT_STATUS_SUCCESS) {

        ALOGE("Failed set report, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseStringUTFChars(report, c_report);

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;

}



static jboolean sendDataNative(JNIEnv *env, jobject object, jbyteArray address, jstring report) {

    ALOGD("%s", __FUNCTION__);

    bt_status_t status;

    jbyte *addr;

    jboolean ret = JNI_TRUE;

    if (!sBluetoothHidInterface) return JNI_FALSE;



    addr = env->GetByteArrayElements(address, NULL);

    if (!addr) {

        ALOGE("Bluetooth device address null");

        return JNI_FALSE;

    }

    const char *c_report = env->GetStringUTFChars(report, NULL);

    if ( (status = sBluetoothHidInterface->send_data((bt_bdaddr_t *) addr, (char*) c_report)) !=

             BT_STATUS_SUCCESS) {

        ALOGE("Failed set report, status: %d", status);

        ret = JNI_FALSE;

    }

    env->ReleaseStringUTFChars(report, c_report);

    env->ReleaseByteArrayElements(address, addr, 0);



    return ret;



}



static JNINativeMethod sMethods[] = {

    {"classInitNative", "()V", (void *) classInitNative},

    {"initializeNative", "()V", (void *) initializeNative},

    {"cleanupNative", "()V", (void *) cleanupNative},

    {"connectHidNative", "([B)Z", (void *) connectHidNative},

    {"disconnectHidNative", "([B)Z", (void *) disconnectHidNative},

    {"getProtocolModeNative", "([B)Z", (void *) getProtocolModeNative},

    {"virtualUnPlugNative", "([B)Z", (void *) virtualUnPlugNative},

    {"setProtocolModeNative", "([BB)Z", (void *) setProtocolModeNative},

    {"getReportNative", "([BBBI)Z", (void *) getReportNative},

    {"setReportNative", "([BBLjava/lang/String;)Z", (void *) setReportNative},

    {"sendDataNative", "([BLjava/lang/String;)Z", (void *) sendDataNative},

};



int register_com_android_bluetooth_hid(JNIEnv* env)

{

    return jniRegisterNativeMethods(env, "com/android/bluetooth/hid/HidService",

                                    sMethods, NELEM(sMethods));

}



}

src/com/android/bluetooth/hid/HidDevService.java

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