Function parsePixelDataSubBlock

YUViewLib/src/parser/Subtitles/SubtitleDVB.cpp:277–352

}

unsigned parsePixelDataSubBlock(SubByteReaderLogging &reader)
{
  SubByteReaderLoggingSubLevel s(reader, "pixel-data_sub-block()");

  unsigned data_type = reader.readBits("data_type",
                                       8,
                                       Options()
                                           .withMeaningMap({{0x10, "2-bit/pixel code string"},
                                                            {0x11, "4-bit/pixel code string"},
                                                            {0x12, "8-bit/pixel code string"},
                                                            {0x20, "2_to_4-bit_map-table data"},
                                                            {0x21, "2_to_8-bit_map-table data"},
                                                            {0x22, "4_to_8-bit_map-table data"},
                                                            {0xF0, "end of object line code"}})
                                           .withMeaning("reserved"));

  auto end      = false;
  auto bitsRead = 0u;
  if (data_type == 0x10)
  {
    while (!end)
    {
      auto [pEnd, pBitsRead] = parse_2_bit_pixel_code_string(reader);
      end                    = pEnd;
      bitsRead += pBitsRead;
    }
    while (bitsRead % 8 != 0)
    {
      reader.readBits("stuff_bits_2", 2);
      bitsRead += 2;
    }
  }
  else if (data_type == 0x11)
  {
    while (!end)
    {
      auto [pEnd, pBitsRead] = parse_4_bit_pixel_code_string(reader);
      end                    = pEnd;
      bitsRead += pBitsRead;
    }
    while (bitsRead % 8 != 0)
    {
      reader.readBits("stuff_bits_4", 4);
      bitsRead += 4;
    }
  }
  else if (data_type == 0x12)
  {
    while (!end)
    {
      auto [pEnd, pBitsRead] = parse_8_bit_pixel_code_string(reader);
      end                    = pEnd;
      bitsRead += pBitsRead;
    }
  }
  else if (data_type == 0x20)
  {
    for (unsigned i = 0; i < 2; i++)