android关于jni反射的一些操作
16lz
2021-01-24
android关于jni反射的一些操作
本文说明一下当用到jni的时候需要的反射功能及一些操作，应用场景在于c++反射调用java的一些变量及类的操作，下面截取项目中的代码片段。具体的可以看注释
方法如下：1.添加如下代码在MainActivity类内 static { System.loadLibrary("hello_jni"); } public native String getstringfromC();2.打开终端，android studio已经提供了终端3.首先进入java目录执行命令：javah -d ../jni com.example.root.ndk_sample.MainActivitycom.example.root.ndk_sample.MainActivity是native函数的所在的包名和类名，中间使用“.”号分开4.添加*.c文件在jni目录中5.编写Android.mk和Application.mk 放在jni目录下面6.Android.mk文件的内容如下：LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE :=hello_jniLOCAL_SRC_FILES := hello_jni.cinclude $(BUILD_SHARED_LIBRARY)Application.mk 文件内容为：APP_ABI := allAPP_OPIM :=debug 1:在环境变量path中配置例如“E:\work\java\android-studio\jre\bin”的路径才能用javah生成jni用的头文件。2：在C:\Users\zhuweigang.DS\Desktop\LvsAndroidPlay\lvs_androidjni\src\main\java目录下（和com同级目录）输入：“javah -d ../../jni com.example.lvs_androidjni.LvsAndroidInterfaceFFmpegDemux”即生成和mian同级目录的jni里面包含jni的头文件。3：下面就用到ndk编写c的程序然后生成so，需要编写android.mk，Application.mk等等。 4：编写好android.mk和Application.mk，在同一级目录输入“ndk-build”生成.so。 5：可以用 " nm -D libLvsOpenal.so |grep interface_1init"查看是否有输出，其中“interface_1init”是javah生成的那个头文件里面的函数名称所包含的关键字。 如果成功了则显示如： 0000cf18 T Java_com_example_lvs_1androidjni_LvsAndroidInterfaceOpenAl_lvs_1openal_1interface_1init。 下面是具体的操作代码 //将java jobject(Hashmap)转为 c++用的Module_Info(用于init,需要分配内存)static int Jobject2Module_Info(JNIEnv * env, jobject thiz,jobject jobj, Module_Info ** module_info,int * Length, int useModuleStreamInfo_In,int useModuleStreamInfo_Out,UseInfoType useinfotype){ int ret = 0; //查看传进来的object是否是空 if (jobj == NULL) { LOGD("Jobject2Module_Info jobj == NULL"); return 1; } //得到map jclass jmapclass = env->FindClass("java/util/HashMap"); jmethodID jkeysetmid = env->GetMethodID(jmapclass, "keySet", "()Ljava/util/Set;"); jmethodID jgetmid = env->GetMethodID(jmapclass,"get", "(Ljava/lang/Object;)Ljava/lang/Object;"); jobject jsetkey = env->CallObjectMethod(jobj,jkeysetmid); //得到key数组(只有key没有value) jclass jsetclass = env->FindClass("java/util/Set"); jmethodID jtoArraymid = env->GetMethodID(jsetclass, "toArray", "()[Ljava/lang/Object;"); jobjectArray jobjArray = (jobjectArray)env->CallObjectMethod(jsetkey,jtoArraymid); if(jobjArray == NULL) { LOGD("error :jobjArray"); return -1; } jsize arraysize = env->GetArrayLength(jobjArray); LOGD("******************arraysize:%d",(jint)arraysize); //申请传出的数据信息结构体 Module_Info * pmodule_info = NULL; //数据信息结构体 int needlength = 0; //需要传给下层的长度 int count_info = 0; //info标号 if(arraysize > 0) { pmodule_info = *module_info; pmodule_info = (Module_Info *)realloc(pmodule_info,arraysize * sizeof(Module_Info));for (int i = 0; i< arraysize ;i++){pmodule_info[i].ModuleStreamInfo_In = NULL;pmodule_info[i].ModuleStreamInfo_Out = NULL;} } //HashMap //通过循环key数组得到value for( int i=0; i < arraysize; i++) { //得到key jobject jkeyobject = env->GetObjectArrayElement(jobjArray,i); jclass jintclass = env->FindClass("java/lang/Integer"); jmethodID jintId = env->GetMethodID(jintclass, "intValue", "()I"); jint jkey = (jint)env->CallIntMethod(jkeyobject,jintId); LOGD("jkey:%d",jkey); //得到value jobject jvalueobject = (jobject)env->CallObjectMethod(jobj,jgetmid,jkeyobject); jclass jvalueclass = env->GetObjectClass(jvalueobject); //stream_id jmethodID jstream_id = env->GetMethodID(jvalueclass, "getstream_id", "()I"); //最后的参数是括号内参数括号外返回值 if(jstream_id == NULL) { LOGD("error :stream_id"); return -1; } jint info_stream_id = (jint)env->CallIntMethod(jvalueobject,jstream_id); LOGD("stream_id:%d",info_stream_id); //Is_ToNext_Module jmethodID jIs_ToNext_Module_id = env->GetMethodID(jvalueclass, "getIs_ToNext_Module", "()I"); //最后的参数是括号内参数括号外返回值 if(jIs_ToNext_Module_id == NULL) { LOGD("error :Is_ToNext_Module"); return -1; } jint info_Is_ToNext_Module = (jint)env->CallIntMethod(jvalueobject,jIs_ToNext_Module_id); LOGD("Is_ToNext_Module:%d",info_Is_ToNext_Module); //device_type jmethodID jdevice_type_id = env->GetMethodID(jvalueclass, "getdevice_type", "()I"); //最后的参数是括号内参数括号外返回值 if(jdevice_type_id == NULL) { LOGD("error :device_type"); return -1; } jint info_device_type = (jint)env->CallIntMethod(jvalueobject,jdevice_type_id); LOGD("device_type:%d",info_device_type); //CodecType jmethodID jCodecType_id = env->GetMethodID(jvalueclass, "getCodecType", "()I"); //最后的参数是括号内参数括号外返回值 if(jCodecType_id == NULL) { LOGD("error :CodecType"); return -1; } jint info_CodecType = (jint)env->CallIntMethod(jvalueobject,jCodecType_id); LOGD("CodecType:%d",info_CodecType); //timebase_num jmethodID jtimebase_num_id = env->GetMethodID(jvalueclass, "gettimebase_num", "()I"); //最后的参数是括号内参数括号外返回值 if(jtimebase_num_id == NULL) { LOGD("error :timebase_num"); return -1; } jint info_timebase_num = (jint)env->CallIntMethod(jvalueobject,jtimebase_num_id); LOGD("timebase_num:%d",info_timebase_num); //timebase_den jmethodID jtimebase_den_id = env->GetMethodID(jvalueclass, "gettimebase_den", "()I"); //最后的参数是括号内参数括号外返回值 if(jtimebase_den_id == NULL) { LOGD("error :timebase_den"); return -1; } jint info_timebase_den = (jint)env->CallIntMethod(jvalueobject,jtimebase_den_id); LOGD("timebase_den:%d",info_timebase_den); //Channel jmethodID jChannel_id = env->GetMethodID(jvalueclass, "getChannel", "()I"); //最后的参数是括号内参数括号外返回值 if(jChannel_id == NULL) { LOGD("error :Channel"); return -1; } jint info_Channel = (jint)env->CallIntMethod(jvalueobject,jChannel_id); LOGD("Channel:%d",info_Channel); //SampleFormat jmethodID jSampleFormat_id = env->GetMethodID(jvalueclass, "getSampleFormat", "()I"); //最后的参数是括号内参数括号外返回值 if(jSampleFormat_id == NULL) { LOGD("error :SampleFormat"); return -1; } jint info_SampleFormat = (jint)env->CallIntMethod(jvalueobject,jSampleFormat_id); LOGD("SampleFormat:%d",info_SampleFormat); //SampleRate jmethodID jSampleRate_id = env->GetMethodID(jvalueclass, "getSampleRate", "()I"); //最后的参数是括号内参数括号外返回值 if(jSampleRate_id == NULL) { LOGD("error :SampleRate"); return -1; } jint info_SampleRate = (jint)env->CallIntMethod(jvalueobject,jSampleRate_id); LOGD("SampleRate:%d",info_SampleRate); //Stream_PixFormat jmethodID jgetStream_PixFormat_id = env->GetMethodID(jvalueclass, "getStream_PixFormat", "()I"); //最后的参数是括号内参数括号外返回值 if(jgetStream_PixFormat_id == NULL) { LOGD("error :Stream_PixFormat"); return -1; } jint info_Stream_PixFormat = (jint)env->CallIntMethod(jvalueobject,jgetStream_PixFormat_id); LOGD("Stream_PixFormat:%d",info_Stream_PixFormat);//WidthjmethodID jWidth_id = env->GetMethodID(jvalueclass, "getWidth", "()I"); //最后的参数是括号内参数括号外返回值if(jWidth_id == NULL){LOGD("error :Width");return -1;}jint info_Width = (jint)env->CallIntMethod(jvalueobject,jWidth_id);LOGD("Width:%d",info_Width); //Height jmethodID jHeight_id = env->GetMethodID(jvalueclass, "getHeight", "()I"); //最后的参数是括号内参数括号外返回值 if(jHeight_id == NULL) { LOGD("error :Height"); return -1; } jint info_Height = (jint)env->CallIntMethod(jvalueobject,jHeight_id); LOGD("Height:%d",info_Height);//codec_formatjmethodID jcodec_format_id = env->GetMethodID(jvalueclass, "getcodec_format", "()I"); //最后的参数是括号内参数括号外返回值if(jcodec_format_id == NULL){LOGD("error :codec_format");return -1;}jint info_codec_format = (jint)env->CallIntMethod(jvalueobject,jcodec_format_id);LOGD("codec_format:%d",info_codec_format);//mux_formatjmethodID jmux_format_id = env->GetMethodID(jvalueclass, "getmux_format", "()I"); //最后的参数是括号内参数括号外返回值if(jmux_format_id == NULL){LOGD("error :mux_format");return -1;}jint info_mux_format = (jint)env->CallIntMethod(jvalueobject,jmux_format_id);LOGD("mux_format:%d",info_mux_format); //pts jmethodID jpts_id = env->GetMethodID(jvalueclass, "getpts", "()J"); //最后的参数是括号内参数括号外返回值 if(jpts_id == NULL) { LOGD("error :pts"); return -1; } jlong info_pts = (jlong)env->CallLongMethod(jvalueobject,jpts_id); LOGD("pts:%lld",info_pts); //dts jmethodID jdts_id = env->GetMethodID(jvalueclass, "getdts", "()J"); //最后的参数是括号内参数括号外返回值 if(jdts_id == NULL) { LOGD("error :dts"); return -1; } jlong info_dts = (jlong)env->CallLongMethod(jvalueobject,jdts_id); LOGD("dts:%lld",info_dts); //BufLen jmethodID jBufLen_id = env->GetMethodID(jvalueclass, "getBufLen", "()J"); //最后的参数是括号内参数括号外返回值 if(jBufLen_id == NULL) { LOGD("error :BufLen"); return -1; } jlong info_BufLen = (jlong)env->CallLongMethod(jvalueobject,jBufLen_id); LOGD("BufLen:%lld",info_BufLen); //ActualLen jmethodID jActualLen_id = env->GetMethodID(jvalueclass, "getActualLen", "()J"); //最后的参数是括号内参数括号外返回值 if(jActualLen_id == NULL) { LOGD("error :ActualLen"); return -1; } jlong info_ActualLen = (jlong)env->CallLongMethod(jvalueobject,jActualLen_id); LOGD("ActualLen:%lld",info_ActualLen); //Buf jmethodID jBuf_id = env->GetMethodID(jvalueclass, "getBuf", "()[B"); //最后的参数是括号内参数括号外返回值 if(jBuf_id == NULL) { LOGD("error :Buf"); return -1; } jbyteArray barr_Buf = (jbyteArray)env->CallObjectMethod(jvalueobject,jBuf_id,NULL); jsize barr_Buf_size = env->GetArrayLength(barr_Buf); jbyte* info_Buf = env->GetByteArrayElements(barr_Buf,0); //LOGD("Buf:%s",info_Buf); LOGD("barr_Buf_size:%d",barr_Buf_size); /*********** //将上层传过来的value传到Module_Info中,每个模块用到的参数不同 ***********/ //传给下层并且是视频流 if (info_Is_ToNext_Module == 1 &&info_CodecType == CodecType_Video){ needlength ++; pmodule_info[count_info].Is_ToNext_Module = 1; //header Module_HeaderInfo_FFmpeg_Video_Codec * pheaderinfo_ffmpeg_video_codec = NULL; pheaderinfo_ffmpeg_video_codec = new Module_HeaderInfo_FFmpeg_Video_Codec(); pheaderinfo_ffmpeg_video_codec->stream_id = info_stream_id; pmodule_info[count_info].ModuleHeaderInfo.HeaderInfo = pheaderinfo_ffmpeg_video_codec; //StreamInfo Module_StreamInfo * pmodulestreaminfo = NULL; pmodulestreaminfo = new Module_StreamInfo(); pmodulestreaminfo->stream_id = info_stream_id; pmodulestreaminfo->CodecType = (Stream_CodecType)info_CodecType; pmodulestreaminfo->VideoInfo.PixFormat = (Stream_PixFormat)info_Stream_PixFormat; pmodulestreaminfo->VideoInfo.Width = info_Width; pmodulestreaminfo->VideoInfo.Height = info_Height;pmodulestreaminfo->VideoCodecInfo.codec_format = (Stream_CodecFormat)info_codec_format;pmodulestreaminfo->MuxInfo.mux_format = (Stream_MuxFormat)info_mux_format;//查看需要在哪个info中填写pts dtsif(useinfotype == UseInfoType_Stream){pmodulestreaminfo->VideoInfo.pts = info_pts;pmodulestreaminfo->VideoInfo.dts = info_dts;pmodulestreaminfo->VideoInfo.timebase_den = info_timebase_den;pmodulestreaminfo->VideoInfo.timebase_num = info_timebase_num;}else if(useinfotype == UseInfoType_CodecDecode){pmodulestreaminfo->VideoCodecInfo.pts = info_pts;pmodulestreaminfo->VideoCodecInfo.dts = info_dts;pmodulestreaminfo->VideoCodecInfo.timebase_den = info_timebase_den;pmodulestreaminfo->VideoCodecInfo.timebase_num = info_timebase_num;}else if(useinfotype == UseInfoType_MuxDemux){pmodulestreaminfo->MuxInfo.pts = info_pts;pmodulestreaminfo->MuxInfo.dts = info_dts;pmodulestreaminfo->MuxInfo.timebase_den = info_timebase_den;pmodulestreaminfo->MuxInfo.timebase_num = info_timebase_num;}else{pmodulestreaminfo->VideoInfo.pts = info_pts;pmodulestreaminfo->VideoInfo.dts = info_dts;pmodulestreaminfo->VideoInfo.timebase_den = info_timebase_den;pmodulestreaminfo->VideoInfo.timebase_num = info_timebase_num;} pmodulestreaminfo->BufLen = info_BufLen; if(pmodulestreaminfo->Buf == NULL) { pmodulestreaminfo->Buf =(char *)calloc(pmodulestreaminfo->BufLen,sizeof(char)); } memcpy(pmodulestreaminfo->Buf,info_Buf,info_ActualLen); pmodulestreaminfo->ActualLen = info_ActualLen; //如果用到的是StreamInfo_In if(useModuleStreamInfo_In) { pmodule_info[count_info].ModuleStreamInfo_In = pmodulestreaminfo; LOGD("useModuleStreamInfo_In"); } //如果用到的是StreamInfo_Out if(useModuleStreamInfo_Out) { pmodule_info[count_info].ModuleStreamInfo_Out = pmodulestreaminfo; LOGD("useModuleStreamInfo_Out"); } count_info ++; } //释放 env->ReleaseByteArrayElements(barr_Buf, info_Buf, 0);//释放资源env->DeleteLocalRef(jkeyobject);env->DeleteLocalRef(jintclass);env->DeleteLocalRef(jvalueobject);env->DeleteLocalRef(jvalueclass); } *Length = needlength; *module_info = pmodule_info;//释放env->DeleteLocalRef(jmapclass);env->DeleteLocalRef(jsetkey);env->DeleteLocalRef(jsetclass);env->DeleteLocalRef(jobjArray); return 1;} //将本模块的c++用的Module_Info转化为参数jobj_Current(Hashmap)static int Module_Info2Jobject(JNIEnv * env, jobject thiz,Module_Info * module_info,int Length,jobject jobj,UseInfoType useinfotype){ int ret = 0; //查看传进来的object是否是空 if (module_info == NULL) { LOGD("Module_Info2Jobject module_info == NULL"); return 1; } //生成object(hashmap) jclass class_hashmap = env->GetObjectClass(jobj); jmethodID HashMap_put_id = env->GetMethodID(class_hashmap, "put","(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"); //查找要生成的vlaue类class jclass class_LvsAndroidInfo = env->FindClass("com/android/lvs/lvsandroidinfo/LvsAndroidInfo"); if (class_LvsAndroidInfo == NULL) { LOGD("not found class_LvsAndroidInfo"); return -1; } else { LOGD("sucess found class_LvsAndroidInfo"); } jclass class_LvsAndroidInfo_key = env->FindClass("java/lang/Integer"); if (class_LvsAndroidInfo_key == NULL) { LOGD("not found class_LvsAndroidInfo_key"); return -1; } else { LOGD("sucess found class_LvsAndroidInfo_key"); } //生成map内容 for( int i=0; i < Length; i++) { int stream_id = ((Module_HeaderInfo_FFmpeg_Video_Codec *)(module_info[i].ModuleHeaderInfo.HeaderInfo))->stream_id; LOGD("Module_HeaderInfo_FFmpeg_Video_Codec stream_id : %d",stream_id); //key LOGD("key"); jmethodID LvsAndroidInfo_key_id = env->GetMethodID(class_LvsAndroidInfo_key, "","(I)V"); //new这个key的id jobject LvsAndroidInfo_keyobject = env->NewObject(class_LvsAndroidInfo_key,LvsAndroidInfo_key_id,stream_id); //new一个object //value LOGD("value"); jmethodID LvsAndroidInfo_id = env->GetMethodID(class_LvsAndroidInfo, "","()V"); //new这个class的id jobject LvsAndroidInfoobject = env->NewObject(class_LvsAndroidInfo,LvsAndroidInfo_id, ""); //new一个object //stream_id jmethodID setstream_id_id = env->GetMethodID(class_LvsAndroidInfo, "setstream_id","(I)V"); if(setstream_id_id == NULL) { LOGD("error :setstream_id_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setstream_id_id,stream_id); //Is_ToNext_Module jmethodID setIs_ToNext_Module_id = env->GetMethodID(class_LvsAndroidInfo, "setIs_ToNext_Module","(I)V"); if(setIs_ToNext_Module_id == NULL) { LOGD("error :setIs_ToNext_Module_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setIs_ToNext_Module_id,module_info[i].Is_ToNext_Module); //CodecType jmethodID setCodecType_id = env->GetMethodID(class_LvsAndroidInfo, "setCodecType","(I)V"); if(setCodecType_id == NULL) { LOGD("error :setCodecType_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setCodecType_id,(int)module_info[i].ModuleStreamInfo_Out->CodecType);//ptsjmethodID setpts_id = env->GetMethodID(class_LvsAndroidInfo, "setpts","(J)V");if(setpts_id == NULL){LOGD("error :setpts_id");return NULL;}//dtsjmethodID setdts_id = env->GetMethodID(class_LvsAndroidInfo, "setdts","(J)V");if(setdts_id == NULL){LOGD("error :setdts_id");return NULL;}//timebase_numjmethodID settimebase_num_id = env->GetMethodID(class_LvsAndroidInfo, "settimebase_num","(I)V");if(settimebase_num_id == NULL){LOGD("error :settimebase_num_id");return NULL;}//timebase_denjmethodID settimebase_den_id = env->GetMethodID(class_LvsAndroidInfo, "settimebase_den","(I)V");if(settimebase_den_id == NULL){LOGD("error :settimebase_den_id");return NULL;}//查看需要在哪个info中填写pts dtsif(useinfotype == UseInfoType_Stream){env->CallVoidMethod(LvsAndroidInfoobject,setpts_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.pts);env->CallVoidMethod(LvsAndroidInfoobject,setdts_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.dts);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_num_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.timebase_num);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_den_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.timebase_den);}else if(useinfotype == UseInfoType_CodecDecode){env->CallVoidMethod(LvsAndroidInfoobject,setpts_id,module_info[i].ModuleStreamInfo_Out->VideoCodecInfo.pts);env->CallVoidMethod(LvsAndroidInfoobject,setdts_id,module_info[i].ModuleStreamInfo_Out->VideoCodecInfo.dts);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_num_id,module_info[i].ModuleStreamInfo_Out->VideoCodecInfo.timebase_num);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_den_id,module_info[i].ModuleStreamInfo_Out->VideoCodecInfo.timebase_den);}else if(useinfotype == UseInfoType_MuxDemux){env->CallVoidMethod(LvsAndroidInfoobject,setpts_id,module_info[i].ModuleStreamInfo_Out->MuxInfo.pts);env->CallVoidMethod(LvsAndroidInfoobject,setdts_id,module_info[i].ModuleStreamInfo_Out->MuxInfo.dts);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_num_id,module_info[i].ModuleStreamInfo_Out->MuxInfo.timebase_num);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_den_id,module_info[i].ModuleStreamInfo_Out->MuxInfo.timebase_den);}else{env->CallVoidMethod(LvsAndroidInfoobject,setpts_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.pts);env->CallVoidMethod(LvsAndroidInfoobject,setdts_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.dts);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_num_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.timebase_num);env->CallVoidMethod(LvsAndroidInfoobject,settimebase_den_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.timebase_den);} //BufLen jmethodID setBufLen_id = env->GetMethodID(class_LvsAndroidInfo, "setBufLen","(J)V"); if(setpts_id == NULL) { LOGD("error :setBufLen_id"); return NULL; }//这里一定故要用ModuleStreamInfo_In的buf长度，上层传过来的会比本层输出的buf大 env->CallVoidMethod(LvsAndroidInfoobject,setBufLen_id,module_info[i].ModuleStreamInfo_In->BufLen); //ActualLen jmethodID setActualLen_id = env->GetMethodID(class_LvsAndroidInfo, "setActualLen","(J)V"); if(setActualLen_id == NULL) { LOGD("error :setActualLen_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setActualLen_id,module_info[i].ModuleStreamInfo_Out->ActualLen); //Buf jmethodID setBuf_id = env->GetMethodID(class_LvsAndroidInfo, "setBuf","([B)V"); if(setBuf_id == NULL) { LOGD("error :setBuf_id"); return NULL; }jbyteArray bufbyteArray = env->NewByteArray(module_info[i].ModuleStreamInfo_Out->ActualLen);env->SetByteArrayRegion(bufbyteArray,0,module_info[i].ModuleStreamInfo_Out->ActualLen,(const jbyte *)module_info[i].ModuleStreamInfo_Out->Buf);env->CallVoidMethod(LvsAndroidInfoobject,setBuf_id,bufbyteArray); //Stream_PixFormat jmethodID setStream_PixFormat_id = env->GetMethodID(class_LvsAndroidInfo, "setStream_PixFormat","(I)V"); if(setStream_PixFormat_id == NULL) { LOGD("error :setStream_PixFormat_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setStream_PixFormat_id,(int)module_info[i].ModuleStreamInfo_Out->VideoInfo.PixFormat); //Width jmethodID setWidth_id = env->GetMethodID(class_LvsAndroidInfo, "setWidth","(I)V"); if(setWidth_id == NULL) { LOGD("error :setWidth_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setWidth_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.Width); //Height jmethodID setHeight_id = env->GetMethodID(class_LvsAndroidInfo, "setHeight","(I)V"); if(setHeight_id == NULL) { LOGD("error :setHeight_id"); return NULL; } env->CallVoidMethod(LvsAndroidInfoobject,setHeight_id,module_info[i].ModuleStreamInfo_Out->VideoInfo.Height); //codec_format jmethodID setcodec_format_id = env->GetMethodID(class_LvsAndroidInfo, "setcodec_format","(I)V"); if(setcodec_format_id == NULL) { LOGD("error :setcodec_format_id"); return NULL; }env->CallVoidMethod(LvsAndroidInfoobject,setcodec_format_id,(int)(module_info[i].ModuleStreamInfo_Out->VideoCodecInfo.codec_format));//mux_formatjmethodID setmux_format_id = env->GetMethodID(class_LvsAndroidInfo, "setmux_format","(I)V");if(setmux_format_id == NULL){LOGD("error :setmux_format_id");return NULL;}env->CallVoidMethod(LvsAndroidInfoobject,setmux_format_id,(int)module_info[i].ModuleStreamInfo_Out->MuxInfo.mux_format); //调用hashmap put方法 env->CallObjectMethod(jobj,HashMap_put_id,LvsAndroidInfo_keyobject,LvsAndroidInfoobject);//释放env->DeleteLocalRef(LvsAndroidInfo_keyobject);env->DeleteLocalRef(LvsAndroidInfoobject);env->DeleteLocalRef(bufbyteArray);}//释放env->DeleteLocalRef(class_hashmap);env->DeleteLocalRef(class_LvsAndroidInfo);env->DeleteLocalRef(class_LvsAndroidInfo_key); return 1;} 如有错误请指正：
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