Example #1
0
    public void readTsFile(SeekableByteChannel ch) throws IOException {
      ch.position(0);
      ByteBuffer buf = ByteBuffer.allocate(BUFFER_SIZE);

      for (long pos = ch.position(); ch.read(buf) != -1; pos = ch.position()) {
        buf.flip();
        while (buf.hasRemaining()) {
          ByteBuffer tsBuf = NIOUtils.read(buf, 188);
          pos += 188;
          Assert.assertEquals(0x47, tsBuf.get() & 0xff);
          int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
          int guid = (int) guidFlags & 0x1fff;

          int payloadStart = (guidFlags >> 14) & 0x1;
          int b0 = tsBuf.get() & 0xff;
          int counter = b0 & 0xf;
          if ((b0 & 0x20) != 0) {
            NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
          }
          boolean sectionSyntax =
              payloadStart == 1 && (getRel(tsBuf, getRel(tsBuf, 0) + 2) & 0x80) == 0x80;
          if (sectionSyntax) {
            NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
          }
          if (!onPkt(guid, payloadStart == 1, tsBuf, pos - tsBuf.remaining())) return;
        }
        buf.flip();
      }
    }
Example #2
0
      @Override
      protected ByteBuffer readPes(
          SeekableByteChannel ch, long pesPosition, int pesSize, int payloadSize, int pesAbsIdx)
          throws IOException {
        ch.position(pesPosition * 188);
        ByteBuffer buf = NIOUtils.fetchFrom(ch, pesSize * 188);

        // NOW REMOVE THE TS CRAP
        ByteBuffer dst = buf.duplicate();
        while (buf.hasRemaining()) {
          ByteBuffer tsBuf = NIOUtils.read(buf, 188);
          Assert.assertEquals(0x47, tsBuf.get() & 0xff);
          int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
          int guid = (int) guidFlags & 0x1fff;
          if (guid == targetGuid) {
            int b0 = tsBuf.get() & 0xff;
            int counter = b0 & 0xf;
            if ((b0 & 0x20) != 0) {
              NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
            }
            dst.put(tsBuf);
          }
        }
        dst.flip();
        readPESHeader(dst, 0);
        dst.limit(dst.position() + payloadSize);
        return dst;
      }
Example #3
0
  private static void dumpTSPackets(ReadableByteChannel _in) throws IOException {
    ByteBuffer buf = ByteBuffer.allocate(188 * 1024);

    while (_in.read(buf) != -1) {
      buf.flip();
      buf.limit((buf.limit() / 188) * 188);
      int pmtPid = -1;
      for (int pkt = 0; buf.hasRemaining(); ++pkt) {
        ByteBuffer tsBuf = NIOUtils.read(buf, 188);
        Assert.assertEquals(0x47, tsBuf.get() & 0xff);
        int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
        int guid = (int) guidFlags & 0x1fff;
        int payloadStart = (guidFlags >> 14) & 0x1;
        int b0 = tsBuf.get() & 0xff;
        int counter = b0 & 0xf;
        if ((b0 & 0x20) != 0) {
          NIOUtils.skip(tsBuf, (tsBuf.get() & 0xff));
        }
        System.out.print(
            "#"
                + pkt
                + "[guid: "
                + guid
                + ", cnt: "
                + counter
                + ", start: "
                + (payloadStart == 1 ? "y" : "-"));

        if (guid == 0 || guid == pmtPid) {

          System.out.print(", PSI]: ");
          if (payloadStart == 1) {
            NIOUtils.skip(tsBuf, (tsBuf.get() & 0xff));
          }

          if (guid == 0) {
            PATSection pat = PATSection.parsePAT(tsBuf);
            IntIntMap programs = pat.getPrograms();
            pmtPid = programs.values()[0];
            printPat(pat);
          } else if (guid == pmtPid) {
            PMTSection pmt = PMTSection.parsePMT(tsBuf);
            printPmt(pmt);
          }
        } else {
          System.out.print("]: " + tsBuf.remaining());
        }
        System.out.println();
      }
      buf.clear();
    }
  }
Example #4
0
    protected void analyseBuffer(ByteBuffer buf, long pos) {
      while (buf.hasRemaining()) {
        ByteBuffer tsBuf = NIOUtils.read(buf, 188);
        pos += 188;
        Assert.assertEquals(0x47, tsBuf.get() & 0xff);
        int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
        int guid = (int) guidFlags & 0x1fff;

        for (int i = 0; i < indexer.indexers.length; i++) {

          if (guid == indexer.indexers[i].targetGuid) {
            int payloadStart = (guidFlags >> 14) & 0x1;
            int b0 = tsBuf.get() & 0xff;
            int counter = b0 & 0xf;
            if ((b0 & 0x20) != 0) {
              NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
            }
            indexer.indexers[i].analyseBuffer(tsBuf, pos - tsBuf.remaining());
          }
        }
      }
    }