live555 server mediacodec应用

live555 server + mediacodec

demo: https://github.com/wangzuxing/MyLive555ServerMediaCodec

java端创建缓存文件, 开启camera preview并调用mediacodec编码摄像头预览数据，把视频编码数据写入缓存文件，调用jni端live555的H264VideoFileServerMediaSubsession建立H.264视频文件流服务子会话（简单验证实时的视频流服务功能，文件写入、读出方式实现视频流服务的方式，效率比较低）

Java端：
StreamerActivity2:

 static {         ...         System.loadLibrary("live555");       System.loadLibrary("streamer");    }    ...    public static native void end();    public static native void RtspTempFile(String filename);  //1、创建缓存文件    public static native void WriteRtspFrame(byte[] data, int size); //jni端写编码数据入缓存文件，测试用       public static native int  RtspServer(String filename);    //2、调用live555的H264VideoFileServerMediaSubsession，实现.264视频文件媒体会话子服务    //yv12 转 yuv420p  yvu -> yuv      private void swapYV12toI420(byte[] yv12bytes, byte[] i420bytes, int width, int height)       {                System.arraycopy(yv12bytes, 0, i420bytes, 0,width*height);          System.arraycopy(yv12bytes, width*height+width*height/4, i420bytes, width*height,width*height/4);          System.arraycopy(yv12bytes, width*height, i420bytes, width*height+width*height/4,width*height/4);        }     // MediaCodec（类型为"video/avc"） 同步编码    public void onFrame(byte[] buf, int length) {                    swapYV12toI420(buf, h264, width, height);             ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers();            ByteBuffer[] outputBuffers = mediaCodec.getOutputBuffers();            int inputBufferIndex = mediaCodec.dequeueInputBuffer(-1);            if (inputBufferIndex >= 0) {                ByteBuffer inputBuffer = inputBuffers[inputBufferIndex];                inputBuffer.clear();                inputBuffer.put(h264, 0, length);                mediaCodec.queueInputBuffer(inputBufferIndex, 0, length, 0, 0);            }            MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();            int outputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo,0);            while (outputBufferIndex >= 0) {                ByteBuffer outputBuffer = outputBuffers[outputBufferIndex];              byte[] outData = new byte[bufferInfo.size];              outputBuffer.get(outData);                    if(runOneFlag){                         if(outData.length == 21){                              System.arraycopy(outData, 0,  outData0, 0, 21); //暂存sps pps，编码器会一次性输出sps和pps包（sps pps长度因视频高、宽等参数会有差异，                                                                              //编码器输出的nalu单元自动带start code）                              runOneFlag = false;                         }                    }                    runPushFlag = true;                    if(runPushFlag)                    {                         if(runTestFlag)                         {                             frame_count2++;                             if(frame_count2 >= 50){ //缓存50帧                                  runTestFlag = false;                                  new Thread() {                                       @Override                                       public void run() {                                            RtspServer(h264Path); //开启RTSPServer的 H264VideoFileServerMediaSubsession                                       }                                 }.start();                             }                         }                       try {                             outputStream.write(outData, 0, outData.length); //nalu数据，jav端a写入.264文件, outputStream = new BufferedOutputStream(new FileOutputStream(**));                         } catch (IOException e) {                             // TODO Auto-generated catch block                             e.printStackTrace();                         }                    }                    //WriteRtspFrame(outData, outData.length);  //nalu数据，jni端写入.264文件                mediaCodec.releaseOutputBuffer(outputBufferIndex, false);                outputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, 0);            }      }

JNI端：
streamer.cpp:

JNIEXPORT jint JNICALL Java_com_example_mylive55servermediacodec_StreamerActivity2_RtspServer(JNIEnv *env1, jobject obj, jstring filename){    TaskScheduler* scheduler = BasicTaskScheduler::createNew();    UsageEnvironment* env = BasicUsageEnvironment::createNew(*scheduler);    UserAuthenticationDatabase* authDB = NULL;    RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554, authDB);    if (rtspServer == NULL) {        LOGI("Failed to create RTSP server:%s", env->getResultMsg());        return -1;    }    char const* descriptionString = "Session streamed by \"testOnDemandRTSPServer\"";    quit = 0;    ServerMediaSession* sms = NULL;    // A H.264 video elementary stream:    {        char const* streamName = "mstreamer";        char const* inputFileName = env1->GetStringUTFChars(filename, NULL);         LOGI("   inputFileName = %s", inputFileName);      sms = ServerMediaSession::createNew(*env, streamName, streamName, descriptionString);        sms->addSubsession(H264VideoFileServerMediaSubsession::createNew(*env, inputFileName, reuseFirstSource0));        rtspServer->addServerMediaSession(sms);        announceStream0(rtspServer, sms, streamName, inputFileName);    }  /*    {        char const* streamName = "ts";        char const* inputFileName = "/sdcard/H264_720p.ts";        char const* indexFileName = "test.tsx";        ServerMediaSession* sms = ServerMediaSession::createNew(*env,                streamName, streamName, descriptionString);        sms->addSubsession(                MPEG2TransportFileServerMediaSubsession::createNew(*env,                        inputFileName, indexFileName, reuseFirstSource0));        rtspServer->addServerMediaSession(sms);        announceStream0(rtspServer, sms, streamName, inputFileName);    }  */    if (rtspServer->setUpTunnelingOverHTTP(80)            || rtspServer->setUpTunnelingOverHTTP(8000)            || rtspServer->setUpTunnelingOverHTTP(8080)) {        LOGI("we use port-->%d", rtspServer->httpServerPortNum());    } else {        LOGI("RTSP-over-HTTP tunneling is not available.");    }    env->taskScheduler().doEventLoop(&quit);    rtspServer->removeServerMediaSession(sms);    Medium::close(rtspServer);    env->reclaim();    env = NULL;  delete scheduler;    scheduler = NULL;    LOGI("......End......\n");    return 0;}JNIEXPORT void JNICALL Java_com_example_mylive55servermediacodec_StreamerActivity2_end(JNIEnv *env, jobject obj) {     LOGI("Ending streaming...\n");     quit = 1;     // Medium::close(rtspServer);}JNIEXPORT void JNICALL Java_com_example_mylive55servermediacodec_StreamerActivity2_RtspTempFile(JNIEnv *env, jobject obj, jstring filename){    char const*inputFilename0 = env->GetStringUTFChars(filename, NULL);    inputFilename = inputFilename0;    file = fopen(inputFilename0, "wb+");    if (!file) {        LOGE("couldn't open %s", inputFilename0);        exit(1);    }    LOGE("  RtspTempFile open %s  ", inputFilename0);}//添加视频帧的方法JNIEXPORT void JNICALL Java_com_example_mylive55servermediacodec_StreamerActivity2_WriteRtspFrame(        JNIEnv *env, jclass clz, jbyteArray data, jint size){    unsigned char *buf = (unsigned char *)env->GetByteArrayElements(data, JNI_FALSE);    //length    pthread_mutex_lock(&mutex);  int ret = fwrite(buf, 1, size, file);  if(ret != 0){       LOGI(" IDR = %d, %d", ret, size);  }  pthread_mutex_unlock(&mutex);    env->ReleaseByteArrayElements(data, (jbyte *)buf, 0);}