Method initWithASTCData

core/platform/Image.cpp:2108–2220

}

bool Image::initWithASTCData(uint8_t* data, ssize_t dataLen, bool ownData)
{
    astc_header* hdr = (astc_header*)data;

    do
    {
        // Ensure these are not zero to avoid div by zero
        unsigned int block_x = (std::max)((unsigned int)hdr->block_x, 1u);
        unsigned int block_y = (std::max)((unsigned int)hdr->block_y, 1u);
        // unsigned int block_z = std::max((unsigned int) hdr->block_z, 1u);

        unsigned int dim_x = astc_unpack_bytes(hdr->dim_x[0], hdr->dim_x[1], hdr->dim_x[2], 0);
        unsigned int dim_y = astc_unpack_bytes(hdr->dim_y[0], hdr->dim_y[1], hdr->dim_y[2], 0);
        // unsigned int dim_z = astc_unpack_bytes(hdr->dim_z[0], hdr->dim_z[1], hdr->dim_z[2], 0);

        if (dim_x == 0 || dim_y == 0)
            break;

        _width  = dim_x;
        _height = dim_y;

        if (block_x < 4 || block_y < 4)
        {
            AXLOGW("The ASTC block with and height should be >= 4");
            break;
        }

        if (Configuration::getInstance()->supportsASTC())
        {
            if (block_x == 4 && block_y == 4)
            {
                _pixelFormat = backend::PixelFormat::ASTC4x4;
            }
            else if (block_x == 5 && block_y == 4)
            {
                 _pixelFormat = backend::PixelFormat::ASTC5x4;
            }
            else if (block_x == 5 && block_y == 5)
            {
                _pixelFormat = backend::PixelFormat::ASTC5x5;
            }
            else if (block_x == 6 && block_y == 5)
            {
                _pixelFormat = backend::PixelFormat::ASTC6x5;
            }
            else if (block_x == 6 && block_y == 6)
            {
                _pixelFormat = backend::PixelFormat::ASTC6x6;
            }
            else if (block_x == 8 && block_y == 5)
            {
                _pixelFormat = backend::PixelFormat::ASTC8x5;
            }
            else if (block_x == 8 && block_y == 6)
            {
                _pixelFormat = backend::PixelFormat::ASTC8x6;
            }
            else if (block_x == 8 && block_y == 8)