C++ util::Config类代码示例

/// Entry point for DTSCFix, simply calls Converters::DTSCFix().
int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.addOption("filename", JSON::fromString("{\"arg_num\":1, \"arg\":\"string\", \"help\":\"Filename of the file to attempt to fix.\"}"));
  conf.addOption("force", JSON::fromString("{\"short\":\"f\", \"long\":\"force\", \"default\":0, \"help\":\"Force fixing.\"}"));
  conf.parseArgs(argc, argv);
  return Converters::DTSCFix(conf);
} //main

int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.addOption("detail",
      JSON::fromString(
          "{\"arg_num\":1, \"arg\":\"integer\", \"default\":0, \"help\":\"Bitmask, 1 = Reconstruct, 2 = Explicit media info, 4 = Verbose chunks\"}"));
  conf.parseArgs(argc, argv);

  return Analysers::analyseRTMP(conf);
} //main

///\brief Entry point for FLV2DTSC, simply calls Converters::FLV2DTSC().
int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.addOption("output",
      JSON::fromString(
          "{\"long\":\"output\", \"value\":[\"stdout\"], \"short\":\"o\", \"arg\":\"string\", \"help\":\"Name of the outputfile or stdout for standard output.\"}"));
  conf.parseArgs(argc, argv);
  if (conf.getString("output") == "stdout"){
    return Converters::FLV2DTSC(std::cout);
  }
  std::ofstream oFile(conf.getString("output").c_str());
  return Converters::FLV2DTSC(oFile);
} //main

  ///\brief Debugging tool for DTSC data.
  ///
  /// Expects DTSC data in a file given on the command line, outputs human-readable information to stderr.
  ///\param conf The configuration parsed from the commandline.
  ///\return The return code of the analyser.
  int analyseDTSC(Util::Config conf){
    DTSC::File F(conf.getString("filename"));
    if (!F){
      std::cerr << "Not a valid DTSC file" << std::endl;
      return 1;
    }
    F.getMeta().toPrettyString(std::cout,0, 0x03);

    int bPos = 0;
    F.seek_bpos(0);
    F.parseNext();
    while (F.getPacket()){
      switch (F.getPacket().getVersion()){
        case DTSC::DTSC_V1: {
          std::cout << "DTSCv1 packet: " << F.getPacket().getScan().toPrettyString() << std::endl;
          break;
        }
        case DTSC::DTSC_V2: {
          std::cout << "DTSCv2 packet (Track " << F.getPacket().getTrackId() << ", time " << F.getPacket().getTime() << "): " << F.getPacket().getScan().toPrettyString() << std::endl;
          break;
        }
        case DTSC::DTSC_HEAD: {
          std::cout << "DTSC header: " << F.getPacket().getScan().toPrettyString() << std::endl;
          break;
        }
        default:
          DEBUG_MSG(DLVL_WARN,"Invalid dtsc packet @ bpos %d", bPos);
          break;
      }
      bPos = F.getBytePos();
      F.parseNext();
    }
    return 0;
  }

  /// Starts a loop, waiting for connections to send data to.
  int Start(int argc, char ** argv) {
    Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
    conf.addOption("stream_name", JSON::fromString("{\"arg_num\":1, \"arg\":\"string\", \"help\":\"Name of the stream this buffer will be providing.\"}"));
    conf.addOption("awaiting_ip", JSON::fromString("{\"arg_num\":2, \"arg\":\"string\", \"default\":\"\", \"help\":\"IP address to expect incoming data from. This will completely disable reading from standard input if used.\"}"));
    conf.addOption("reportstats", JSON::fromString("{\"default\":0, \"help\":\"Report stats to a controller process.\", \"short\":\"s\", \"long\":\"reportstats\"}"));
    conf.parseArgs(argc, argv);

    std::string name = conf.getString("stream_name");

    SS = Util::Stream::makeLive(name);
    if (!SS.connected()) {
      perror("Could not create stream socket");
      return 1;
    }
    conf.activate();
    thisStream = Stream::get();
    thisStream->setName(name);
    Socket::Connection incoming;
    Socket::Connection std_input(fileno(stdin));

    tthread::thread * StatsThread = 0;
    if (conf.getBool("reportstats")){StatsThread = new tthread::thread(handleStats, 0);}
    tthread::thread * StdinThread = 0;
    std::string await_ip = conf.getString("awaiting_ip");
    if (await_ip == ""){
      StdinThread = new tthread::thread(handleStdin, 0);
    }else{
      thisStream->setWaitingIP(await_ip);
      StdinThread = new tthread::thread(handlePushin, 0);
    }

    while (buffer_running && SS.connected() && conf.is_active){
      //check for new connections, accept them if there are any
      //starts a thread for every accepted connection
      incoming = SS.accept(true);
      if (incoming.connected()){
        user * usr_ptr = new user(incoming);
        thisStream->addUser(usr_ptr);
        usr_ptr->Thread = new tthread::thread(handleUser, (void *)usr_ptr);
      }
    }//main loop

    // disconnect listener
    buffer_running = false;
    std::cout << "End of input file - buffer shutting down" << std::endl;
    SS.close();
    if (StatsThread){StatsThread->join();}
    StdinThread->join();
    delete thisStream;
    return 0;
  }

/// Reads FLV from stdin and outputs human-readable information to stderr.
int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.parseArgs(argc, argv);
  FLV::Tag FLV_in; // Temporary storage for incoming FLV data.
  std::ofstream vData("vData");
  std::ofstream aData("aData");
  while ( !feof(stdin)){
    if (FLV_in.FileLoader(stdin)){
      std::cout << "Tag: " << FLV_in.tagType() << "\n\tTime: " << FLV_in.tagTime() << std::endl;
      if (FLV_in.data[0] == 0x08){ //Audio
        aData.write(FLV_in.data + 13, FLV_in.len - 17);
      }
      if (FLV_in.data[0] == 0x09){ //Video
        vData.write(FLV_in.data + 16, FLV_in.len - 20);
      }
    }
  }
  vData.close();
  aData.close();
  return 0;
}

 int DTSC2OGG(Util::Config & conf){
   DTSC::File DTSCFile(conf.getString("filename"));
   srand (Util::getMS());//randomising with milliseconds from boot
   std::vector<unsigned int> curSegTable;
   OGG::converter oggMeta;
   //Creating ID headers for theora and vorbis
   DTSC::readOnlyMeta fileMeta = DTSCFile.getMeta();
   DTSC::Meta giveMeta(fileMeta);
   
   oggMeta.readDTSCHeader(giveMeta);
   std::cout << oggMeta.parsedPages;//outputting header pages
  
   //create DTSC in OGG pages
   DTSCFile.parseNext();
   std::map< long long int, std::vector<JSON::Value> > DTSCBuffer;
   OGG::Page curOggPage;
   while(DTSCFile.getJSON()){
     std::string tmpString;
     oggMeta.readDTSCVector(DTSCFile.getJSON(), tmpString);
     std::cout << tmpString;
     DTSCFile.parseNext();
   }
   return 0;   
 }

int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0]);
  conf.parseArgs(argc, argv);
  
  return Analysers::analyseAMF();
}

int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.parseArgs(argc,argv);
  return Converters::OGG2DTSC();
}

/// Debugging tool for MP4 data.
/// Expects MP4 data through stdin, outputs human-readable information to stderr.
int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
  conf.parseArgs(argc, argv);
  return Analysers::analyseMP4();
}

/// Reads an DTSC file and prints all readable data about it
int main(int argc, char ** argv){
  Util::Config conf = Util::Config(argv[0]);
  conf.addOption("filename", JSON::fromString("{\"arg_num\":1, \"arg\":\"string\", \"help\":\"Filename of the DTSC file to analyse.\"}"));
  conf.parseArgs(argc, argv);
  return Analysers::analyseDTSC(conf);
} //main

  int DTSCMerge(int argc, char ** argv){
    Util::Config conf = Util::Config(argv[0], PACKAGE_VERSION);
    conf.addOption("output", JSON::fromString("{\"arg_num\":1, \"arg\":\"string\", \"help\":\"Filename of the output file.\"}"));
    conf.addOption("input", JSON::fromString("{\"arg_num\":2, \"arg\":\"string\", \"help\":\"Filename of the first input file.\"}"));
    conf.addOption("[additional_inputs ...]", JSON::fromString("{\"arg_num\":3, \"default\":\"\", \"arg\":\"string\", \"help\":\"Filenames of any number of aditional inputs.\"}"));
    conf.parseArgs(argc, argv);

    DTSC::File outFile;
    JSON::Value meta;
    DTSC::Meta newMeta;
    std::map<std::string,std::map<int, int> > trackMapping;

    bool fullSort = true;
    std::map<std::string, DTSC::File> inFiles;
    std::map<std::string, DTSC::Meta> metaData;
    std::string outFileName = argv[1];
    std::string tmpFileName;
    for (int i = 2; i < argc; i++){
      tmpFileName = argv[i];
      if (tmpFileName == outFileName){
        fullSort = false;
      }else{
        DTSC::File F(tmpFileName);
        if (!F.getMeta().isFixed()){
          std::cerr << tmpFileName << " has not been run through DTSCFix yet." << std::endl;
          return 1;
        }
        inFiles[tmpFileName] = F;
      }
    }

    if (fullSort){
      outFile = DTSC::File(outFileName, true);
    }else{
      outFile = DTSC::File(outFileName);
      if ( !outFile.getMeta().isFixed()){
        std::cerr << outFileName << " has not been run through DTSCFix yet." << std::endl;
        return 1;
      }
      meta = outFile.getMeta().toJSON();
      newMeta = DTSC::Meta(meta);
      if (meta.isMember("tracks") && meta["tracks"].size() > 0){
        for (JSON::ObjIter trackIt = meta["tracks"].ObjBegin(); trackIt != meta["tracks"].ObjEnd(); trackIt++){
          int nxtMap = getNextFree(trackMapping);
          trackMapping[argv[1]].insert(std::pair<int,int>(trackIt->second["trackid"].asInt(),nxtMap));
          newMeta.tracks[nxtMap].trackID = nxtMap;
        }
      }
    }

    std::multimap<int,keyframeInfo> allSorted;

    for (std::map<std::string,DTSC::File>::iterator it = inFiles.begin(); it != inFiles.end(); it++){
      DTSC::Meta tmpMeta(it->second.getMeta());
      for (std::map<int,DTSC::Track>::iterator trackIt = tmpMeta.tracks.begin(); trackIt != tmpMeta.tracks.end(); trackIt++){
        long long int oldID = trackIt->first;
        long long int mappedID = getNextFree(trackMapping);
        trackMapping[it->first].insert(std::pair<int,int>(oldID,mappedID));
        for (std::deque<DTSC::Key>::iterator keyIt = trackIt->second.keys.begin(); keyIt != trackIt->second.keys.end(); keyIt++){
          keyframeInfo tmpInfo;
          tmpInfo.fileName = it->first;
          tmpInfo.trackID = oldID;
          tmpInfo.keyTime = keyIt->getTime();
          tmpInfo.keyBPos = keyIt->getBpos();
          tmpInfo.keyNum = keyIt->getNumber();
          tmpInfo.keyLen = keyIt->getLength();
          if ((keyIt + 1) != trackIt->second.keys.end()){
            tmpInfo.endBPos = (keyIt + 1)->getBpos();
          }else{
            tmpInfo.endBPos = it->second.getBytePosEOF();
          }
          allSorted.insert(std::pair<int,keyframeInfo>(keyIt->getTime(),tmpInfo));
        }
        newMeta.tracks[mappedID] = trackIt->second;
        newMeta.tracks[mappedID].trackID = mappedID;
        newMeta.tracks[mappedID].reset();
      }
    }

    if (fullSort){
      meta.null();
      meta["moreheader"] = 0ll;
      std::string tmpWrite = meta.toPacked();
      outFile.writeHeader(tmpWrite,true);
    }

    std::set<int> trackSelector;
    for (std::multimap<int,keyframeInfo>::iterator sortIt = allSorted.begin(); sortIt != allSorted.end(); sortIt++){
      trackSelector.clear();
      trackSelector.insert(sortIt->second.trackID);
      inFiles[sortIt->second.fileName].selectTracks(trackSelector);
      inFiles[sortIt->second.fileName].seek_time(sortIt->second.keyTime);
      inFiles[sortIt->second.fileName].seekNext();
      while (inFiles[sortIt->second.fileName].getPacket() && inFiles[sortIt->second.fileName].getBytePos() <= sortIt->second.endBPos && !inFiles[sortIt->second.fileName].reachedEOF()){
        if (inFiles[sortIt->second.fileName].getPacket().getTrackId() == sortIt->second.trackID){
          JSON::Value tmp = inFiles[sortIt->second.fileName].getPacket().toJSON();
          tmp["trackid"] = trackMapping[sortIt->second.fileName][sortIt->second.trackID];
          outFile.writePacket(tmp);
        }
        inFiles[sortIt->second.fileName].seekNext();
//.........这里部分代码省略.........

  ///\brief Debugging tool for RTMP data.
  ///
  ///Expects RTMP data of one side of the conversation through stdin, outputs human-readable information to stderr.
  ///
  ///Will output FLV file to stdout, if available.
  ///
  ///Automatically skips the handshake data.
  ///\param conf The configuration parsed from the commandline.
  ///\return The return code of the analyser.
  int analyseRTMP(Util::Config conf){
    int Detail = conf.getInteger("detail");
    if (Detail > 0){
      fprintf(stderr, "Detail level set:\n");
      if (Detail & DETAIL_RECONSTRUCT){
        fprintf(stderr, " - Will reconstuct FLV file to stdout\n");
        std::cout.write(FLV::Header, 13);
      }
      if (Detail & DETAIL_EXPLICIT){
        fprintf(stderr, " - Will list explicit video/audio data information\n");
      }
      if (Detail & DETAIL_VERBOSE){
        fprintf(stderr, " - Will list verbose chunk information\n");
      }
    }

    std::string inbuffer;
    inbuffer.reserve(3073);
    while (std::cin.good() && inbuffer.size() < 3073){
      inbuffer += std::cin.get();
    } //read all of std::cin to temp
    inbuffer.erase(0, 3073); //strip the handshake part
    RTMPStream::Chunk next;
    FLV::Tag F; //FLV holder
    AMF::Object amfdata("empty", AMF::AMF0_DDV_CONTAINER);
    AMF::Object3 amf3data("empty", AMF::AMF3_DDV_CONTAINER);

    while (std::cin.good() || inbuffer.size()){
      if (next.Parse(inbuffer)){
        if (Detail & DETAIL_VERBOSE){
          fprintf(stderr, "Chunk info: [%#2X] CS ID %u, timestamp %u, len %u, type ID %u, Stream ID %u\n", next.headertype, next.cs_id, next.timestamp,
              next.len, next.msg_type_id, next.msg_stream_id);
        }
        switch (next.msg_type_id){
          case 0: //does not exist
            fprintf(stderr, "Error chunk - %i, %i, %i, %i, %i\n", next.cs_id, next.timestamp, next.real_len, next.len_left, next.msg_stream_id);
            //return 0;
            break; //happens when connection breaks unexpectedly
          case 1: //set chunk size
            RTMPStream::chunk_rec_max = ntohl(*(int*)next.data.c_str());
            fprintf(stderr, "CTRL: Set chunk size: %i\n", RTMPStream::chunk_rec_max);
            break;
          case 2: //abort message - we ignore this one
            fprintf(stderr, "CTRL: Abort message: %i\n", ntohl(*(int*)next.data.c_str()));
            //4 bytes of stream id to drop
            break;
          case 3: //ack
            RTMPStream::snd_window_at = ntohl(*(int*)next.data.c_str());
            fprintf(stderr, "CTRL: Acknowledgement: %i\n", RTMPStream::snd_window_at);
            break;
          case 4: {
            short int ucmtype = ntohs(*(short int*)next.data.c_str());
            switch (ucmtype){
              case 0:
                fprintf(stderr, "CTRL: User control message: stream begin %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 1:
                fprintf(stderr, "CTRL: User control message: stream EOF %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 2:
                fprintf(stderr, "CTRL: User control message: stream dry %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 3:
                fprintf(stderr, "CTRL: User control message: setbufferlen %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 4:
                fprintf(stderr, "CTRL: User control message: streamisrecorded %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 6:
                fprintf(stderr, "CTRL: User control message: pingrequest %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              case 7:
                fprintf(stderr, "CTRL: User control message: pingresponse %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
              default:
                fprintf(stderr, "CTRL: User control message: UNKNOWN %hu - %u\n", ucmtype, ntohl(*(unsigned int*)(next.data.c_str()+2)));
                break;
            }
          }
            break;
          case 5: //window size of other end
            RTMPStream::rec_window_size = ntohl(*(int*)next.data.c_str());
            RTMPStream::rec_window_at = RTMPStream::rec_cnt;
            fprintf(stderr, "CTRL: Window size: %i\n", RTMPStream::rec_window_size);
            break;
          case 6:
            RTMPStream::snd_window_size = ntohl(*(int*)next.data.c_str());
            //4 bytes window size, 1 byte limit type (ignored)
            fprintf(stderr, "CTRL: Set peer bandwidth: %i\n", RTMPStream::snd_window_size);
            break;
          case 8:
//.........这里部分代码省略.........

  ///\brief Reads a DTSC file and attempts to fix the metadata in it.
  ///\param conf The current configuration of the program.
  ///\return The return code for the fixed program.
  int DTSCFix(Util::Config & conf){
    DTSC::File F(conf.getString("filename"));
    F.seek_bpos(0);
    F.parseNext();
    JSON::Value oriheader = F.getJSON();
    JSON::Value meta = F.getMeta();
    JSON::Value pack;

    if ( !oriheader.isMember("moreheader")){
      std::cerr << "This file is too old to fix - please reconvert." << std::endl;
      return 1;
    }
    if (DTSC::isFixed(meta) && !conf.getBool("force")){
      std::cerr << "This file was already fixed or doesn't need fixing - cancelling." << std::endl;
      return 0;
    }
    meta.removeMember("isFixed");
    meta.removeMember("keytime");
    meta.removeMember("keybpos");
    meta.removeMember("moreheader");

    std::map<std::string,int> trackIDs;
    std::map<std::string,HeaderEntryDTSC> trackData;


    long long int nowpack = 0;
    
    std::string currentID;
    int nextFreeID = 0;

    for (JSON::ObjIter it = meta["tracks"].ObjBegin(); it != meta["tracks"].ObjEnd(); it++){
      trackIDs.insert(std::pair<std::string,int>(it->first,it->second["trackid"].asInt()));
      trackData[it->first].type = it->second["type"].asString();
      trackData[it->first].trackID = it->second["trackid"].asInt();
      trackData[it->first].type = it->second["type"].asString();
      if (it->second["trackid"].asInt() >= nextFreeID){
        nextFreeID = it->second["trackid"].asInt() + 1;
      }
      it->second.removeMember("keylen");
      it->second.removeMember("keybpos");
      it->second.removeMember("frags");
      it->second.removeMember("keytime");
      it->second.removeMember("keynum");
      it->second.removeMember("keydata");
      it->second.removeMember("keyparts");
      it->second.removeMember("keys");
    }

    F.parseNext();
    while ( !F.getJSON().isNull()){
      currentID = "";
      if (F.getJSON()["trackid"].asInt() == 0){
        if (F.getJSON()["datatype"].asString() == "video"){
          currentID = "video0";
          if (trackData[currentID].trackID == 0){
            trackData[currentID].trackID = nextFreeID++;
          }
          if (meta.isMember("video")){
            meta["tracks"][currentID] = meta["video"];
            meta.removeMember("video");
          }
          trackData[currentID].type = F.getJSON()["datatype"].asString();
        }else{
          if (F.getJSON()["datatype"].asString() == "audio"){
            currentID = "audio0";
            if (trackData[currentID].trackID == 0){
              trackData[currentID].trackID = nextFreeID++;
            }
            if (meta.isMember("audio")){
              meta["tracks"][currentID] = meta["audio"];
              meta.removeMember("audio");
            }
            trackData[currentID].type = F.getJSON()["datatype"].asString();
          }else{
            //fprintf(stderr, "Found an unknown package with packetid 0 and datatype %s\n",F.getJSON()["datatype"].asString().c_str());
            F.parseNext();
            continue;
          }
        }
      }else{
        for( std::map<std::string,int>::iterator it = trackIDs.begin(); it != trackIDs.end(); it++ ) {
          if( it->second == F.getJSON()["trackid"].asInt() ) {
            currentID = it->first;
            break;
          }
        }
        if( currentID == "" ) {
          //fprintf(stderr, "Found an unknown v2 packet with id %d\n", F.getJSON()["trackid"].asInt());
          F.parseNext();
          continue;
          //should create new track but this shouldnt be needed...
        }
      }
      if (F.getJSON()["time"].asInt() < trackData[currentID].firstms){
        trackData[currentID].firstms = F.getJSON()["time"].asInt();
      }
      if (F.getJSON()["time"].asInt() >= nowpack){
//.........这里部分代码省略.........

  ///\brief Debugging tool for DTSC data.
  ///
  /// Expects DTSC data in a file given on the command line, outputs human-readable information to stderr.
  ///\param conf The configuration parsed from the commandline.
  ///\return The return code of the analyser.
  int analyseDTSC(Util::Config conf){
    DTSC::File F(conf.getString("filename"));
    JSON::Value meta = F.getMeta();
    std::cout << meta.toPrettyString() << std::endl;
    JSON::Value pack;

    long long unsigned int firstpack = 0;
    long long unsigned int nowpack = 0;
    long long unsigned int lastaudio = 0;
    long long unsigned int lastvideo = 0;
    long long unsigned int lastkey = 0;
    long long unsigned int totalvideo = 0;
    long long unsigned int totalaudio = 0;
    long long unsigned int keyframes = 0;
    long long unsigned int key_min = 0xffffffff;
    long long unsigned int key_max = 0;
    long long unsigned int vid_min = 0xffffffff;
    long long unsigned int vid_max = 0;
    long long unsigned int aud_min = 0xffffffff;
    long long unsigned int aud_max = 0;
    long long unsigned int bfrm_min = 0xffffffff;
    long long unsigned int bfrm_max = 0;
    long long unsigned int bps = 0;

    F.seekNext();
    while ( !F.getJSON().isNull()){
      std::cout << F.getJSON().toPrettyString() << std::endl;
      nowpack = F.getJSON()["time"].asInt();
      if (firstpack == 0){
        firstpack = nowpack;
      }
      if (F.getJSON()["datatype"].asString() == "audio"){
        if (lastaudio != 0 && (nowpack - lastaudio) != 0){
          bps = F.getJSON()["data"].asString().size() / (nowpack - lastaudio);
          if (bps < aud_min){
            aud_min = bps;
          }
          if (bps > aud_max){
            aud_max = bps;
          }
        }
        totalaudio += F.getJSON()["data"].asString().size();
        lastaudio = nowpack;
      }
      if (F.getJSON()["datatype"].asString() == "video"){
        if (lastvideo != 0 && (nowpack - lastvideo) != 0){
          bps = F.getJSON()["data"].asString().size() / (nowpack - lastvideo);
          if (bps < vid_min){
            vid_min = bps;
          }
          if (bps > vid_max){
            vid_max = bps;
          }
        }
        if (F.getJSON()["keyframe"].asInt() != 0){
          if (lastkey != 0){
            bps = nowpack - lastkey;
            if (bps < key_min){
              key_min = bps;
            }
            if (bps > key_max){
              key_max = bps;
            }
          }
          keyframes++;
          lastkey = nowpack;
        }
        if (F.getJSON()["offset"].asInt() != 0){
          bps = F.getJSON()["offset"].asInt();
          if (bps < bfrm_min){
            bfrm_min = bps;
          }
          if (bps > bfrm_max){
            bfrm_max = bps;
          }
        }
        totalvideo += F.getJSON()["data"].asString().size();
        lastvideo = nowpack;
      }
      F.seekNext();
    }

    std::cout << std::endl << "Summary:" << std::endl;
    meta["length"] = (long long int)((nowpack - firstpack) / 1000);
    if (meta.isMember("audio")){
      meta["audio"]["bps"] = (long long int)(totalaudio / ((lastaudio - firstpack) / 1000));
      std::cout << "  Audio: " << meta["audio"]["codec"].asString() << std::endl;
      std::cout << "    Bitrate: " << meta["audio"]["bps"].asInt() << std::endl;
    }
    if (meta.isMember("video")){
      meta["video"]["bps"] = (long long int)(totalvideo / ((lastvideo - firstpack) / 1000));
      meta["video"]["keyms"] = (long long int)((lastvideo - firstpack) / keyframes);
      if (meta["video"]["keyms"].asInt() - key_min > key_max - meta["video"]["keyms"].asInt()){
        meta["video"]["keyvar"] = (long long int)(meta["video"]["keyms"].asInt() - key_min);
      }else{
//.........这里部分代码省略.........