// RCB Texture file format - THQ Australia Engine
// Contains DXT compressed texture data in g4rc containers
// Big-endian (Xbox 360, Wii)

type thqa_rcb [root, display="THQA RCB Texture"] byteorder BE
{
  criteria {
    require ascii(bytesat(0, 4)) == "g4rc";
  }

  // RCB files start with g4rc blocks
  first_magic = ascii(read(4));

  ui("first_magic", "Magic");
  u32 first_type;

  ui("first_type", "Block Type");
  u32 first_hash;

  ui("first_hash", "Hash");
  u32 first_size;

  ui("first_size", "Size");

  // Type 0x07 = metadata, 0x12 = pixel data
  block_type_desc = "Unknown";
  if (first_type == 0x07) {
    block_type_desc = "Metadata";
  }
  if (first_type == 0x12) {
    block_type_desc = "Pixel Data";
  }
  block_type_name = block_type_desc;

  ui("block_type_name", "Block Type Name");

  // Read block data if there's enough space
  if (first_size > 0 && pos() + first_size <= size()) {
    block_data = read(first_size);

    // Look for pixel block if this was metadata
    if (first_type == 0x07 && pos() + 16 <= size()) {
      next_magic = ascii(read(4));

      ui("next_magic", "Next Magic");
      u32 next_type;

      ui("next_type", "Next Block Type");
      u32 next_hash;

      ui("next_hash", "Next Hash");
      u32 next_size;

      ui("next_size", "Next Size");

      if (next_type == 0x12) {
        pixel_data_size = next_size;

        ui("pixel_data_size", "Pixel Data Size");
      }
    }
  }

  file_size = size();


  ui("file_size", "Total File Size");
}

type thqa_dxt1_block [display="DXT1 Block"] byteorder LE
{
  u16 color0;

  ui("color0", "Color 0 (RGB565)");
  u16 color1;

  ui("color1", "Color 1 (RGB565)");
  u32 indices;

  ui("indices", "Pixel Indices");
}