Function parse_ATSC1_data

YUViewLib/src/parser/Subtitles/AnnexBItuTT35.cpp:43–86

using namespace parser::reader;

void parse_ATSC1_data(SubByteReaderLogging &reader)
{
  SubByteReaderLoggingSubLevel s(reader, "ATSC1_data");

  unsigned user_data_type_code = reader.readBits(
      "user_data_type_code",
      8,
      Options().withMeaningVector({"SCTE/ATSC Reserved", "cc_data() / DTV CC", "bar_data()"}));

  if (user_data_type_code == 0x03)
  {
    // cc_data() - CEA-708
    reader.readFlag("process_em_data_flag");
    reader.readFlag("process_cc_data_flag");
    reader.readFlag("additional_data_flag");
    unsigned cc_count = reader.readBits("cc_count", 5);
    reader.readBits("em_data", 8);

    if (reader.nrBytesLeft() > cc_count * 3 + 1)
    {
      // Possibly, the count is wrong.
      if ((reader.nrBytesLeft() - 1) % 3 == 0)
        cc_count = unsigned(reader.nrBytesLeft() - 1) / 3;
    }

    // Now should follow (cc_count * 24 bits of cc_data_pkts)
    // Just display the raw bytes of the payload
    for (unsigned int i = 0; i < cc_count; i++)
    {
      parser::subtitle::sub_608::parse608DataPayloadCCDataPacket(reader);
    }

    reader.readBits("marker_bits", 8);
    // The ATSC marker_bits indicator should be 255

    // ATSC_reserved_user_data
    int idx = 0;
    while (reader.canReadBits(8))
    {
      reader.readBits(parser::formatArray("ATSC_reserved_user_data", idx), 8);
      idx++;
    }
  }
}

} // namespace