#include "ffmpeg-invoker.h" #include #include #include "ffmpeg_thread.h" #include "android_log.h" #include "cmdutils.h" static JavaVM *jvm = NULL; //java虚拟机 static jclass m_clazz = NULL;//当前类(面向java) /** * 回调执行Java方法 * 参看 Jni反射+Java反射 */ void callJavaMethod(JNIEnv *env, jclass clazz,int ret) { if (clazz == NULL) { LOGE("---------------clazz isNULL---------------"); return; } //获取方法ID (I)V指的是方法签名 通过javap -s -public FFmpegCmd 命令生成 jmethodID methodID = (*env)->GetStaticMethodID(env, clazz, "onExecuted", "(I)V"); if (methodID == NULL) { LOGE("---------------methodID isNULL---------------"); return; } //调用该java方法 (*env)->CallStaticVoidMethod(env, clazz, methodID,ret); } void callJavaMethodProgress(JNIEnv *env, jclass clazz,float ret) { if (clazz == NULL) { LOGE("---------------clazz isNULL---------------"); return; } //获取方法ID (I)V指的是方法签名 通过javap -s -public FFmpegCmd 命令生成 jmethodID methodID = (*env)->GetStaticMethodID(env, clazz, "onProgress", "(F)V"); if (methodID == NULL) { LOGE("---------------methodID isNULL---------------"); return; } //调用该java方法 (*env)->CallStaticVoidMethod(env, clazz, methodID,ret); } /** * c语言-线程回调 */ static void ffmpeg_callback(int ret) { JNIEnv *env; //附加到当前线程从JVM中取出JNIEnv, C/C++从子线程中直接回到Java里的方法时 必须经过这个步骤 (*jvm)->AttachCurrentThread(jvm, (void **) &env, NULL); callJavaMethod(env, m_clazz,ret); //完毕-脱离当前线程 (*jvm)->DetachCurrentThread(jvm); } void ffmpeg_progress(float percent) { JNIEnv *env; (*jvm)->AttachCurrentThread(jvm, (void **) &env, NULL); callJavaMethodProgress(env, m_clazz,percent); (*jvm)->DetachCurrentThread(jvm); } JNIEXPORT jint JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_exec(JNIEnv *env, jclass clazz, jint cmdnum, jobjectArray cmdline) { (*env)->GetJavaVM(env, &jvm); m_clazz = (*env)->NewGlobalRef(env, clazz); //---------------------------------C语言 反射Java 相关---------------------------------------- //---------------------------------java 数组转C语言数组---------------------------------------- int i = 0;//满足NDK所需的C99标准 char **argv = NULL;//命令集 二维指针 jstring *strr = NULL; if (cmdline != NULL) { argv = (char **) malloc(sizeof(char *) * cmdnum); strr = (jstring *) malloc(sizeof(jstring) * cmdnum); for (i = 0; i < cmdnum; ++i) {//转换 strr[i] = (jstring)(*env)->GetObjectArrayElement(env, cmdline, i); argv[i] = (char *) (*env)->GetStringUTFChars(env, strr[i], 0); } } //---------------------------------java 数组转C语言数组---------------------------------------- //---------------------------------执行FFmpeg命令相关---------------------------------------- //新建线程 执行ffmpeg 命令 ffmpeg_thread_run_cmd(cmdnum, argv); //注册ffmpeg命令执行完毕时的回调 ffmpeg_thread_callback(ffmpeg_callback); free(strr); return 0; } JNIEXPORT void JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_exit(JNIEnv *env, jclass type) { (*env)->GetJavaVM(env, &jvm); m_clazz = (*env)->NewGlobalRef(env, type); ffmpeg_thread_cancel(); } JNIEXPORT jstring JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_getConfigInfo(JNIEnv *env, jclass clazz) { char info[10000] = {0}; sprintf(info, "%s\n", avcodec_configuration()); return (*env)->NewStringUTF(env, info); } JNIEXPORT jstring JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_getAVCodecInfo(JNIEnv *env, jclass clazz) { char info[40000] = { 0 }; AVCodec *c_temp = av_codec_next(NULL); while (c_temp != NULL) { if (c_temp->decode != NULL) { sprintf(info, "%s[Dec]", info); } else { sprintf(info, "%s[Enc]", info); } switch (c_temp->type) { case AVMEDIA_TYPE_VIDEO: sprintf(info, "%s[Video]", info); break; case AVMEDIA_TYPE_AUDIO: sprintf(info, "%s[Audio]", info); break; default: sprintf(info, "%s[Other]", info); break; } sprintf(info, "%s[%10s]\n", info, c_temp->name); c_temp=c_temp->next; } return (*env)->NewStringUTF(env, info); } JNIEXPORT jstring JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_getAVFormatInfo(JNIEnv *env, jclass clazz) { char info[40000] = { 0 }; AVInputFormat *if_temp = av_iformat_next(NULL); AVOutputFormat *of_temp = av_oformat_next(NULL); //Input while (if_temp != NULL) { sprintf(info, "%s[In ][%10s]\n", info, if_temp->name); if_temp = if_temp->next; } //Output while (of_temp != NULL) { sprintf(info, "%s[Out][%10s]\n", info, of_temp->name); of_temp = of_temp->next; } return (*env)->NewStringUTF(env, info); } JNIEXPORT jstring JNICALL Java_com_github_xch168_ffmpeg_invoker_FFmpegInvoker_getAVFilterInfo(JNIEnv *env, jclass clazz) { char info[40000] = { 0 }; AVFilter *f_temp = (AVFilter *)avfilter_next(NULL); while (f_temp != NULL) { sprintf(info, "%s[%10s]\n", info, f_temp->name); f_temp = f_temp->next; } return (*env)->NewStringUTF(env, info); }