#include <fstream>
#include <iostream>

#include "FlvParser.h"

void Process(std::fstream &fin, char *filename);

int main(int argc, char *argv[]) {
    if (argc < 3) {
        printf("flvparser [input file] [output file]\n");

        return -1;
    }

    std::fstream fin;
    fin.open(argv[1], std::ios_base::in | std::ios_base::binary);

    if (!fin) {
        std::cout << "fstream init error" << std::endl;
        return -1;
    }

    Process(fin, argv[1]);

    fin.close();

    return 0;
}

void Process(std::fstream &fin, char *filename) {
    FlvParser pParser;

    int nBufSize = 2 * 1024 * 1024;
    int nFlvPos = 0;
    uint8_t *pBuf, *pBak;
    pBuf = new uint8_t[nBufSize];
    pBak = new uint8_t[nBufSize];

    while (1) {
        int nReadNum = 0;
        int nUsedLen = 0;

        fin.read((char *)pBuf + nFlvPos, nBufSize - nFlvPos);
        nReadNum = fin.gcount();

        if (nReadNum == 0) break;

        pParser.Parse(pBuf + nFlvPos, nReadNum, nUsedLen);
        nFlvPos += nReadNum;

        if (nUsedLen != nFlvPos) {
            memcpy(pBak, pBuf + nUsedLen, nFlvPos - nUsedLen);
            memcpy(pBuf, pBak, nFlvPos - nUsedLen);
        }

        nFlvPos -= nUsedLen;
    }

    pParser.DumpH264("parser.h264");
    pParser.DumpAAC("parser.aac");
    pParser.DumpFlv("parser.flv");

    delete[] pBuf;
    delete[] pBak;
}