jni/fmr/libfm_jni.cpp - SHIFTPHONES/android_packages_apps_FMRadio - Gitiles

 /*
  * Copyright (C) 2014 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.
  */

 #include <jni.h>
 #include "fmr.h"

 #ifdef LOG_TAG
 #undef LOG_TAG
 #endif
 #define LOG_TAG "FMLIB_JNI"

 static int g_idx = -1;
 extern struct fmr_ds fmr_data;

 jboolean openDev(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;

     ret = FMR_open_dev(g_idx); // if success, then ret = 0; else ret < 0

     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jboolean closeDev(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;

     ret = FMR_close_dev(g_idx);

     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jboolean powerUp(JNIEnv *env __unused, jobject thiz __unused, jfloat freq)
 {
     int ret = 0;
     int tmp_freq;

     LOGI("%s, [freq=%d]\n", __func__, (int)freq);
     tmp_freq = (int)(freq * 10);        //Eg, 87.5 * 10 --> 875
     ret = FMR_pwr_up(g_idx, tmp_freq);

     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jboolean powerDown(JNIEnv *env __unused, jobject thiz __unused, jint type)
 {
     int ret = 0;

     ret = FMR_pwr_down(g_idx, type);

     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jboolean tune(JNIEnv *env __unused, jobject thiz __unused, jfloat freq)
 {
     int ret = 0;
     int tmp_freq;

     tmp_freq = (int)(freq * 10);        //Eg, 87.5 * 10 --> 875
     ret = FMR_tune(g_idx, tmp_freq);

     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jfloat seek(JNIEnv *env __unused, jobject thiz __unused, jfloat freq, jboolean isUp)
 {
     int ret = 0;
     int tmp_freq;
     int ret_freq;
     float val;

     tmp_freq = (int)(freq * 100);       //Eg, 87.55 * 100 --> 8755
     ret = FMR_set_mute(g_idx, 1);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
     }
     LOGD("%s, [mute] [ret=%d]\n", __func__, ret);

     ret = FMR_seek(g_idx, tmp_freq, (int)isUp, &ret_freq);
     if (ret) {
         ret_freq = tmp_freq; //seek error, so use original freq
     }

     LOGD("%s, [freq=%d] [ret=%d]\n", __func__, ret_freq, ret);

     val = (float)ret_freq/100;   //Eg, 8755 / 100 --> 87.55

     return val;
 }

 jshortArray autoScan(JNIEnv *env, jobject thiz __unused)
 {
 #define FM_SCAN_CH_SIZE_MAX 200
     int ret = 0;
     jshortArray scanChlarray;
     int chl_cnt = FM_SCAN_CH_SIZE_MAX;
     uint16_t ScanTBL[FM_SCAN_CH_SIZE_MAX];

     LOGI("%s, [tbl=%p]\n", __func__, ScanTBL);
     FMR_Pre_Search(g_idx);
     ret = FMR_scan(g_idx, ScanTBL, &chl_cnt);
     if (ret < 0) {
         LOGE("scan failed!\n");
         scanChlarray = NULL;
         goto out;
     }
     if (chl_cnt > 0) {
         scanChlarray = env->NewShortArray(chl_cnt);
         env->SetShortArrayRegion(scanChlarray, 0, chl_cnt, (const jshort*)&ScanTBL[0]);
     } else {
         LOGE("cnt error, [cnt=%d]\n", chl_cnt);
         scanChlarray = NULL;
     }
     FMR_Restore_Search(g_idx);

     if (fmr_data.scan_stop == fm_true) {
         ret = FMR_tune(g_idx, fmr_data.cur_freq);
         LOGI("scan stop!!! tune ret=%d",ret);
         scanChlarray = NULL;
         ret = -1;
     }

 out:
     LOGD("%s, [cnt=%d] [ret=%d]\n", __func__, chl_cnt, ret);
     return scanChlarray;
 }

 jshort readRds(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;
     uint16_t status = 0;

     ret = FMR_read_rds_data(g_idx, &status);

     if (ret) {
         //LOGE("%s,status = 0,[ret=%d]\n", __func__, ret);
         status = 0; //there's no event or some error happened
     }

     return status;
 }

 jbyteArray getPs(JNIEnv *env, jobject thiz __unused)
 {
     int ret = 0;
     jbyteArray PSname;
     uint8_t *ps = NULL;
     int ps_len = 0;

     ret = FMR_get_ps(g_idx, &ps, &ps_len);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
         return NULL;
     }
     PSname = env->NewByteArray(ps_len);
     env->SetByteArrayRegion(PSname, 0, ps_len, (const jbyte*)ps);
     LOGD("%s, [ret=%d]\n", __func__, ret);
     return PSname;
 }

 jbyteArray getLrText(JNIEnv *env, jobject thiz __unused)
 {
     int ret = 0;
     jbyteArray LastRadioText;
     uint8_t *rt = NULL;
     int rt_len = 0;

     ret = FMR_get_rt(g_idx, &rt, &rt_len);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
         return NULL;
     }
     LastRadioText = env->NewByteArray(rt_len);
     env->SetByteArrayRegion(LastRadioText, 0, rt_len, (const jbyte*)rt);
     LOGD("%s, [ret=%d]\n", __func__, ret);
     return LastRadioText;
 }

 jshort activeAf(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;
     jshort ret_freq = 0;

     ret = FMR_active_af(g_idx, (uint16_t*)&ret_freq);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
         return 0;
     }
     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret_freq;
 }

 jshortArray getAFList(JNIEnv *env, jobject thiz __unused)
 {
     int ret = 0;
     jshortArray AFList;
     char *af = NULL;
     int af_len = 0;

     //ret = FMR_get_af(g_idx, &af, &af_len); // If need, we should implemate this API
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
         return NULL;
     }
     AFList = env->NewShortArray(af_len);
     env->SetShortArrayRegion(AFList, 0, af_len, (const jshort*)af);
     LOGD("%s, [ret=%d]\n", __func__, ret);
     return AFList;
 }

 jint setRds(JNIEnv *env __unused, jobject thiz __unused, jboolean rdson)
 {
     int ret = 0;
     int onoff = -1;

     if (rdson == JNI_TRUE) {
         onoff = FMR_RDS_ON;
     } else {
         onoff = FMR_RDS_OFF;
     }
     ret = FMR_turn_on_off_rds(g_idx, onoff);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
     }
     LOGD("%s, [onoff=%d] [ret=%d]\n", __func__, onoff, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jboolean stopScan(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;

     ret = FMR_stop_scan(g_idx);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
     }
     LOGD("%s, [ret=%d]\n", __func__, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 jint setMute(JNIEnv *env __unused, jobject thiz __unused, jboolean mute)
 {
     int ret = 0;

     ret = FMR_set_mute(g_idx, (int)mute);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
     }
     LOGD("%s, [mute=%d] [ret=%d]\n", __func__, (int)mute, ret);
     return ret?JNI_FALSE:JNI_TRUE;
 }

 /******************************************
  * Inquiry if RDS is support in driver.
  * Parameter:
  *      None
  *Return Value:
  *      1: support
  *      0: NOT support
  *      -1: error
  ******************************************/
 jint isRdsSupport(JNIEnv *env __unused, jobject thiz __unused)
 {
     int ret = 0;
     int supt = -1;

     ret = FMR_is_rdsrx_support(g_idx, &supt);
     if (ret) {
         LOGE("%s, error, [ret=%d]\n", __func__, ret);
     }
     LOGD("%s, [supt=%d] [ret=%d]\n", __func__, supt, ret);
     return supt;
 }

 /******************************************
  * SwitchAntenna
  * Parameter:
  *      antenna:
                 0 : switch to long antenna
                 1: switch to short antenna
  *Return Value:
  *          0: Success
  *          1: Failed
  *          2: Not support
  ******************************************/
 jint switchAntenna(JNIEnv *env __unused, jobject thiz __unused, jint antenna)
 {
     int ret = 0;
     jint jret = 0;
     int ana = -1;

     if (0 == antenna) {
         ana = FM_LONG_ANA;
     } else if (1 == antenna) {
         ana = FM_SHORT_ANA;
     } else {
         LOGE("%s:fail, para error\n", __func__);
         jret = JNI_FALSE;
         goto out;
     }
     ret = FMR_ana_switch(g_idx, ana);
     if (ret == -ERR_UNSUPT_SHORTANA) {
         LOGW("Not support switchAntenna\n");
         jret = 2;
     } else if (ret) {
         LOGE("switchAntenna(), error\n");
         jret = 1;
     } else {
         jret = 0;
     }
 out:
     LOGD("%s: [antenna=%d] [ret=%d]\n", __func__, ana, ret);
     return jret;
 }

 static const char *classPathNameRx = "com/android/fmradio/FmNative";

 static JNINativeMethod methodsRx[] = {
     {"openDev", "()Z", (void*)openDev },  //1
     {"closeDev", "()Z", (void*)closeDev }, //2
     {"powerUp", "(F)Z", (void*)powerUp },  //3
     {"powerDown", "(I)Z", (void*)powerDown }, //4
     {"tune", "(F)Z", (void*)tune },          //5
     {"seek", "(FZ)F", (void*)seek },         //6
     {"autoScan",  "()[S", (void*)autoScan }, //7
     {"stopScan",  "()Z", (void*)stopScan },  //8
     {"setRds",    "(Z)I", (void*)setRds  },  //10
     {"readRds",   "()S", (void*)readRds },  //11 will pending here for get event status
     {"getPs",     "()[B", (void*)getPs  },  //12
     {"getLrText", "()[B", (void*)getLrText}, //13
     {"activeAf",  "()S", (void*)activeAf},   //14
     {"setMute",	"(Z)I", (void*)setMute},  //15
     {"isRdsSupport",	"()I", (void*)isRdsSupport},  //16
     {"switchAntenna", "(I)I", (void*)switchAntenna}, //17
 };

 /*
  * Register several native methods for one class.
  */
 static jint registerNativeMethods(JNIEnv* env, const char* className,
     JNINativeMethod* gMethods, int numMethods)
 {
     jclass clazz;

     clazz = env->FindClass(className);
     if (env->ExceptionCheck()) {
         env->ExceptionDescribe();
         env->ExceptionClear();
     }
     if (clazz == NULL) {
         LOGE("Native registration unable to find class '%s'", className);
         return JNI_FALSE;
     }
     if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {
         LOGE("RegisterNatives failed for '%s'", className);
         return JNI_FALSE;
     }

     LOGD("%s, success\n", __func__);
     return JNI_TRUE;
 }

 /*
  * Register native methods for all classes we know about.
  *
  * returns JNI_TRUE on success.
  */
 static jint registerNatives(JNIEnv* env)
 {
     jint ret = JNI_FALSE;

     if (registerNativeMethods(env, classPathNameRx,methodsRx,
         sizeof(methodsRx) / sizeof(methodsRx[0]))) {
         ret = JNI_TRUE;
     }

     LOGD("%s, done\n", __func__);
     return ret;
 }

 // ----------------------------------------------------------------------------

 /*
  * This is called by the VM when the shared library is first loaded.
  */

 typedef union {
     JNIEnv* env;
     void* venv;
 } UnionJNIEnvToVoid;

 jint JNI_OnLoad(JavaVM* vm, void* reserved __unused)
 {
     UnionJNIEnvToVoid uenv;
     uenv.venv = NULL;
     jint result = -1;
     JNIEnv* env = NULL;

     LOGI("JNI_OnLoad");

     if (vm->GetEnv(&uenv.venv, JNI_VERSION_1_4) != JNI_OK) {
         LOGE("ERROR: GetEnv failed");
         goto fail;
     }
     env = uenv.env;

     if (registerNatives(env) != JNI_TRUE) {
         LOGE("ERROR: registerNatives failed");
         goto fail;
     }

     if ((g_idx = FMR_init()) < 0) {
         goto fail;
     }
     result = JNI_VERSION_1_4;

 fail:
     return result;
 }
	/*
	* Copyright (C) 2014 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.
	*/

	#include <jni.h>
	#include "fmr.h"

	#ifdef LOG_TAG
	#undef LOG_TAG
	#endif
	#define LOG_TAG "FMLIB_JNI"

	static int g_idx = -1;
	extern struct fmr_ds fmr_data;

	jboolean openDev(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;

	ret = FMR_open_dev(g_idx); // if success, then ret = 0; else ret < 0

	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jboolean closeDev(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;

	ret = FMR_close_dev(g_idx);

	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jboolean powerUp(JNIEnv *env __unused, jobject thiz __unused, jfloat freq)
	{
	int ret = 0;
	int tmp_freq;

	LOGI("%s, [freq=%d]\n", __func__, (int)freq);
	tmp_freq = (int)(freq * 10); //Eg, 87.5 * 10 --> 875
	ret = FMR_pwr_up(g_idx, tmp_freq);

	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jboolean powerDown(JNIEnv *env __unused, jobject thiz __unused, jint type)
	{
	int ret = 0;

	ret = FMR_pwr_down(g_idx, type);

	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jboolean tune(JNIEnv *env __unused, jobject thiz __unused, jfloat freq)
	{
	int ret = 0;
	int tmp_freq;

	tmp_freq = (int)(freq * 10); //Eg, 87.5 * 10 --> 875
	ret = FMR_tune(g_idx, tmp_freq);

	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jfloat seek(JNIEnv *env __unused, jobject thiz __unused, jfloat freq, jboolean isUp)
	{
	int ret = 0;
	int tmp_freq;
	int ret_freq;
	float val;

	tmp_freq = (int)(freq * 100); //Eg, 87.55 * 100 --> 8755
	ret = FMR_set_mute(g_idx, 1);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	}
	LOGD("%s, [mute] [ret=%d]\n", __func__, ret);

	ret = FMR_seek(g_idx, tmp_freq, (int)isUp, &ret_freq);
	if (ret) {
	ret_freq = tmp_freq; //seek error, so use original freq
	}

	LOGD("%s, [freq=%d] [ret=%d]\n", __func__, ret_freq, ret);

	val = (float)ret_freq/100; //Eg, 8755 / 100 --> 87.55

	return val;
	}

	jshortArray autoScan(JNIEnv *env, jobject thiz __unused)
	{
	#define FM_SCAN_CH_SIZE_MAX 200
	int ret = 0;
	jshortArray scanChlarray;
	int chl_cnt = FM_SCAN_CH_SIZE_MAX;
	uint16_t ScanTBL[FM_SCAN_CH_SIZE_MAX];

	LOGI("%s, [tbl=%p]\n", __func__, ScanTBL);
	FMR_Pre_Search(g_idx);
	ret = FMR_scan(g_idx, ScanTBL, &chl_cnt);
	if (ret < 0) {
	LOGE("scan failed!\n");
	scanChlarray = NULL;
	goto out;
	}
	if (chl_cnt > 0) {
	scanChlarray = env->NewShortArray(chl_cnt);
	env->SetShortArrayRegion(scanChlarray, 0, chl_cnt, (const jshort*)&ScanTBL[0]);
	} else {
	LOGE("cnt error, [cnt=%d]\n", chl_cnt);
	scanChlarray = NULL;
	}
	FMR_Restore_Search(g_idx);

	if (fmr_data.scan_stop == fm_true) {
	ret = FMR_tune(g_idx, fmr_data.cur_freq);
	LOGI("scan stop!!! tune ret=%d",ret);
	scanChlarray = NULL;
	ret = -1;
	}

	out:
	LOGD("%s, [cnt=%d] [ret=%d]\n", __func__, chl_cnt, ret);
	return scanChlarray;
	}

	jshort readRds(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;
	uint16_t status = 0;

	ret = FMR_read_rds_data(g_idx, &status);

	if (ret) {
	//LOGE("%s,status = 0,[ret=%d]\n", __func__, ret);
	status = 0; //there's no event or some error happened
	}

	return status;
	}

	jbyteArray getPs(JNIEnv *env, jobject thiz __unused)
	{
	int ret = 0;
	jbyteArray PSname;
	uint8_t *ps = NULL;
	int ps_len = 0;

	ret = FMR_get_ps(g_idx, &ps, &ps_len);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	return NULL;
	}
	PSname = env->NewByteArray(ps_len);
	env->SetByteArrayRegion(PSname, 0, ps_len, (const jbyte*)ps);
	LOGD("%s, [ret=%d]\n", __func__, ret);
	return PSname;
	}

	jbyteArray getLrText(JNIEnv *env, jobject thiz __unused)
	{
	int ret = 0;
	jbyteArray LastRadioText;
	uint8_t *rt = NULL;
	int rt_len = 0;

	ret = FMR_get_rt(g_idx, &rt, &rt_len);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	return NULL;
	}
	LastRadioText = env->NewByteArray(rt_len);
	env->SetByteArrayRegion(LastRadioText, 0, rt_len, (const jbyte*)rt);
	LOGD("%s, [ret=%d]\n", __func__, ret);
	return LastRadioText;
	}

	jshort activeAf(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;
	jshort ret_freq = 0;

	ret = FMR_active_af(g_idx, (uint16_t*)&ret_freq);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	return 0;
	}
	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret_freq;
	}

	jshortArray getAFList(JNIEnv *env, jobject thiz __unused)
	{
	int ret = 0;
	jshortArray AFList;
	char *af = NULL;
	int af_len = 0;

	//ret = FMR_get_af(g_idx, &af, &af_len); // If need, we should implemate this API
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	return NULL;
	}
	AFList = env->NewShortArray(af_len);
	env->SetShortArrayRegion(AFList, 0, af_len, (const jshort*)af);
	LOGD("%s, [ret=%d]\n", __func__, ret);
	return AFList;
	}

	jint setRds(JNIEnv *env __unused, jobject thiz __unused, jboolean rdson)
	{
	int ret = 0;
	int onoff = -1;

	if (rdson == JNI_TRUE) {
	onoff = FMR_RDS_ON;
	} else {
	onoff = FMR_RDS_OFF;
	}
	ret = FMR_turn_on_off_rds(g_idx, onoff);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	}
	LOGD("%s, [onoff=%d] [ret=%d]\n", __func__, onoff, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jboolean stopScan(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;

	ret = FMR_stop_scan(g_idx);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	}
	LOGD("%s, [ret=%d]\n", __func__, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	jint setMute(JNIEnv *env __unused, jobject thiz __unused, jboolean mute)
	{
	int ret = 0;

	ret = FMR_set_mute(g_idx, (int)mute);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	}
	LOGD("%s, [mute=%d] [ret=%d]\n", __func__, (int)mute, ret);
	return ret?JNI_FALSE:JNI_TRUE;
	}

	/******************************************
	* Inquiry if RDS is support in driver.
	* Parameter:
	* None
	*Return Value:
	* 1: support
	* 0: NOT support
	* -1: error
	******************************************/
	jint isRdsSupport(JNIEnv *env __unused, jobject thiz __unused)
	{
	int ret = 0;
	int supt = -1;

	ret = FMR_is_rdsrx_support(g_idx, &supt);
	if (ret) {
	LOGE("%s, error, [ret=%d]\n", __func__, ret);
	}
	LOGD("%s, [supt=%d] [ret=%d]\n", __func__, supt, ret);
	return supt;
	}

	/******************************************
	* SwitchAntenna
	* Parameter:
	* antenna:
	0 : switch to long antenna
	1: switch to short antenna
	*Return Value:
	* 0: Success
	* 1: Failed
	* 2: Not support
	******************************************/
	jint switchAntenna(JNIEnv *env __unused, jobject thiz __unused, jint antenna)
	{
	int ret = 0;
	jint jret = 0;
	int ana = -1;

	if (0 == antenna) {
	ana = FM_LONG_ANA;
	} else if (1 == antenna) {
	ana = FM_SHORT_ANA;
	} else {
	LOGE("%s:fail, para error\n", __func__);
	jret = JNI_FALSE;
	goto out;
	}
	ret = FMR_ana_switch(g_idx, ana);
	if (ret == -ERR_UNSUPT_SHORTANA) {
	LOGW("Not support switchAntenna\n");
	jret = 2;
	} else if (ret) {
	LOGE("switchAntenna(), error\n");
	jret = 1;
	} else {
	jret = 0;
	}
	out:
	LOGD("%s: [antenna=%d] [ret=%d]\n", __func__, ana, ret);
	return jret;
	}

	static const char *classPathNameRx = "com/android/fmradio/FmNative";

	static JNINativeMethod methodsRx[] = {
	{"openDev", "()Z", (void*)openDev }, //1
	{"closeDev", "()Z", (void*)closeDev }, //2
	{"powerUp", "(F)Z", (void*)powerUp }, //3
	{"powerDown", "(I)Z", (void*)powerDown }, //4
	{"tune", "(F)Z", (void*)tune }, //5
	{"seek", "(FZ)F", (void*)seek }, //6
	{"autoScan", "()[S", (void*)autoScan }, //7
	{"stopScan", "()Z", (void*)stopScan }, //8
	{"setRds", "(Z)I", (void*)setRds }, //10
	{"readRds", "()S", (void*)readRds }, //11 will pending here for get event status
	{"getPs", "()[B", (void*)getPs }, //12
	{"getLrText", "()[B", (void*)getLrText}, //13
	{"activeAf", "()S", (void*)activeAf}, //14
	{"setMute", "(Z)I", (void*)setMute}, //15
	{"isRdsSupport", "()I", (void*)isRdsSupport}, //16
	{"switchAntenna", "(I)I", (void*)switchAntenna}, //17
	};

	/*
	* Register several native methods for one class.
	*/
	static jint registerNativeMethods(JNIEnv* env, const char* className,
	JNINativeMethod* gMethods, int numMethods)
	{
	jclass clazz;

	clazz = env->FindClass(className);
	if (env->ExceptionCheck()) {
	env->ExceptionDescribe();
	env->ExceptionClear();
	}
	if (clazz == NULL) {
	LOGE("Native registration unable to find class '%s'", className);
	return JNI_FALSE;
	}
	if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {
	LOGE("RegisterNatives failed for '%s'", className);
	return JNI_FALSE;
	}

	LOGD("%s, success\n", __func__);
	return JNI_TRUE;
	}

	/*
	* Register native methods for all classes we know about.
	*
	* returns JNI_TRUE on success.
	*/
	static jint registerNatives(JNIEnv* env)
	{
	jint ret = JNI_FALSE;

	if (registerNativeMethods(env, classPathNameRx,methodsRx,
	sizeof(methodsRx) / sizeof(methodsRx[0]))) {
	ret = JNI_TRUE;
	}

	LOGD("%s, done\n", __func__);
	return ret;
	}

	// ----------------------------------------------------------------------------

	/*
	* This is called by the VM when the shared library is first loaded.
	*/

	typedef union {
	JNIEnv* env;
	void* venv;
	} UnionJNIEnvToVoid;

	jint JNI_OnLoad(JavaVM* vm, void* reserved __unused)
	{
	UnionJNIEnvToVoid uenv;
	uenv.venv = NULL;
	jint result = -1;
	JNIEnv* env = NULL;

	LOGI("JNI_OnLoad");

	if (vm->GetEnv(&uenv.venv, JNI_VERSION_1_4) != JNI_OK) {
	LOGE("ERROR: GetEnv failed");
	goto fail;
	}
	env = uenv.env;

	if (registerNatives(env) != JNI_TRUE) {
	LOGE("ERROR: registerNatives failed");
	goto fail;
	}

	if ((g_idx = FMR_init()) < 0) {
	goto fail;
	}
	result = JNI_VERSION_1_4;

	fail:
	return result;
	}