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

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

  // RCB files start with g4rc blocks
  first_magic = ascii(read(4)) ui("Magic");
  u32 first_type ui("Block Type");
  u32 first_hash ui("Hash");
  u32 first_size ui("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");

  // 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");
      u32 next_type ui("Next Block Type");
      u32 next_hash ui("Next Hash");
      u32 next_size ui("Next Size");

      if (next_type == 0x12) {
        pixel_data_size = next_size ui("Pixel Data Size");
      }
    }
  }

  file_size = size() ui("Total File Size");
}

type thqa_dxt1_block ui("DXT1 Block") byteorder LE
{
  u16 color0 ui("Color 0 (RGB565)");
  u16 color1 ui("Color 1 (RGB565)");
  u32 indices ui("Pixel Indices");
}