Method saveImageToPNG

core/platform/Image.cpp:2538–2681

#endif

bool Image::saveImageToPNG(std::string_view filePath, bool isToRGB)
{
#if AX_USE_WIC
    return encodeWithWIC(filePath, isToRGB, GUID_ContainerFormatPng);
#elif AX_USE_PNG
    bool ret = false;
    do
    {
        png_structp png_ptr;
        png_infop info_ptr;
        png_bytep* row_pointers;

        auto outStream = FileUtils::getInstance()->openFileStream(filePath, IFileStream::Mode::WRITE);

        AX_BREAK_IF(nullptr == outStream);

        png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);

        if (nullptr == png_ptr)
        {
            outStream.reset();
            break;
        }

        info_ptr = png_create_info_struct(png_ptr);
        if (nullptr == info_ptr)
        {
            outStream.reset();
            png_destroy_write_struct(&png_ptr, nullptr);
            break;
        }
        if (setjmp(png_jmpbuf(png_ptr)))
        {
            outStream.reset();
            png_destroy_write_struct(&png_ptr, &info_ptr);
            break;
        }

        // png_init_io(png_ptr, outStream);
        png_set_write_fn(png_ptr, outStream.get(), pngWriteCallback, nullptr);

        if (!isToRGB && hasAlpha())
        {
            png_set_IHDR(png_ptr, info_ptr, _width, _height, 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE,
                         PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
        }
        else
        {
            png_set_IHDR(png_ptr, info_ptr, _width, _height, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
                         PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
        }

        png_write_info(png_ptr, info_ptr);

        png_set_packing(png_ptr);

        row_pointers = (png_bytep*)malloc(_height * sizeof(png_bytep));
        if (row_pointers == nullptr)