Function ktxTexture2_GetDataSizeUncompressed

lib/texture2.c:2126–2159

* @memberof ktxTexture2 * @~English * @brief Return the total size in bytes of the uncompressed data of a * ktxTexture2. * * If supercompressionScheme == @c KTX_SS_NONE or * @c KTX_SS_BASIS_LZ, returns the value of @c This->dataSize * else if supercompressionScheme == @c KTX_SS_ZSTD or @c KTX_SS_ZLIB, it * returns the sum of the uncompressed sizes of each mip level plus space for *

 * @param[in]     This     pointer to the ktxTexture1 object of interest.
 */
ktx_size_t
ktxTexture2_GetDataSizeUncompressed(ktxTexture2* This)
{
    switch (This->supercompressionScheme) {
      case KTX_SS_BASIS_LZ:
      case KTX_SS_NONE:
        return This->dataSize;
      case KTX_SS_ZSTD:
      case KTX_SS_ZLIB:
      {
            ktx_size_t uncompressedSize = 0;
            ktx_uint32_t uncompressedLevelAlignment;
            ktxLevelIndexEntry* levelIndex = This->_private->_levelIndex;

            uncompressedLevelAlignment =
                ktxTexture2_calcPostInflationLevelAlignment(This);

            for (ktx_int32_t level = This->numLevels - 1; level >= 1; level--) {
                ktx_size_t uncompressedLevelSize;
                uncompressedLevelSize = levelIndex[level].uncompressedByteLength;
                uncompressedLevelSize = _KTX_PADN(uncompressedLevelAlignment,
                                                  uncompressedLevelSize);
                uncompressedSize += uncompressedLevelSize;
            }
            uncompressedSize += levelIndex[0].uncompressedByteLength;
            return uncompressedSize;
      }
      case KTX_SS_BEGIN_VENDOR_RANGE:
      case KTX_SS_END_VENDOR_RANGE:
      case KTX_SS_BEGIN_RESERVED:
      default:
        return 0;
    }
}

/**
 * @memberof ktxTexture2