ImageMagick错误：无法打开图像 [英] ImageMagick Error: Unable to open image

问题描述

我在我的应用程序中使用ImageMagick（Magick ++），但是当尝试加载图片时出现错误：

无法打开image'??'：无效的参数@ error / blob.c / OpenBlob / 2657

阅读其他人在线问题 ?? 通常是试图加载的文件，我显然没有将文件位置 ?? 传递给加载器 - 所以它似乎无法解析我给它的字符串。尝试使用Unicode和多字节。从示例复制项目设置。

  LawlessFBXTexture * LawlessFBXTextureManager :: CreateTexture（std :: string pFullFilePath）
 {
 Magick :: Image * img = nullptr; 
 Magick :: Blob blob; 
 
 try 
 {
 img = new Magik :: Image（）; 
 img-> read（pFullFilePath）; 
 img-> write（& blob，RGBA）; 
} 
 catch（Magick :: Error& Err）
 {
 std :: string errstr = Err.what（）; 
 std :: wstring stemps = std :: wstring（errstr.begin（），errstr.end（））; 
 LPCWSTR sws = stemps.c_str（）; 
 OutputDebugString（LFBXSDK：ERROR：）; 
 OutputDebugString（sws）; 
 OutputDebugString（L\\\
）; 
 
 int ImageNotFound = 0; /// Image Not found< --- 
 assert（ImageNotFound）; 
} 
 
 LawlessFBXTexture * tex = new LawlessFBXTexture（）; 
 
 glGenTextures（1，& tex-> TextureBuffer）; 
 glBindTexture（GL_TEXTURE_2D，tex-> TextureBuffer）; 
 glTexImage2D（GL_TEXTURE_2D，0，GL_RGBA，img-> columns（），img-> rows（），0，GL_RGBA，GL_UNSIGNED_BYTE，blob.data（））; 
 glTexParameterf（GL_TEXTURE_2D，GL_TEXTURE_MIN_FILTER，GL_LINEAR）; 
 glTexParameterf（GL_TEXTURE_2D，GL_TEXTURE_MAG_FILTER，GL_LINEAR）; 
 
 return tex; 
} 
  

被呼叫者：

LawlessFBXTexture * tex = CreateTexture（.. \\..\\Asset\\Models\\LawlessCoreAsset\\ DEFAULT_DIFFUSE.png）;

解决方案

我注意到这在发布模式下可以正常工作， 。我很确定这是一个错误，所以我会在Magick论坛上发布我的发现。

I'm using ImageMagick (Magick++) in my application but when trying to load an image I get the error:

Unable to open image '??': Invalid argument @ error/blob.c/OpenBlob/2657

From reading other peoples problems online ?? is typically the file trying to be loaded, and I am obviously not passing the file location ?? to the loader - so it appears not to be able to resolve the string I am giving it. Tried using Unicode and Multi-byte. Copied project settings from example(s). File definitely exists and definitely the correct location.

Code:

LawlessFBXTexture* LawlessFBXTextureManager::CreateTexture(std::string pFullFilePath) 
{
    Magick::Image* img = nullptr;
    Magick::Blob blob;

    try
    {
        img = new Magick::Image();
        img->read(pFullFilePath);
        img->write(&blob, "RGBA");
    }
    catch (Magick::Error& Err)
    {
        std::string errstr = Err.what();
        std::wstring stemps = std::wstring(errstr.begin(), errstr.end());
        LPCWSTR sws = stemps.c_str();
        OutputDebugString(L"FBXSDK: ERROR: ");
        OutputDebugString(sws);
        OutputDebugString(L"\n");

        int ImageNotFound = 0;      /// Image Not found <---
        assert(ImageNotFound);
    }

    LawlessFBXTexture* tex = new LawlessFBXTexture();

    glGenTextures(1, &tex->TextureBuffer);
    glBindTexture(GL_TEXTURE_2D, tex->TextureBuffer);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, img->columns(), img->rows(), 0, GL_RGBA, GL_UNSIGNED_BYTE, blob.data());
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    return tex;
}

being called by :

LawlessFBXTexture* tex = CreateTexture("..\\..\\Asset\\Models\\LawlessCoreAsset\\DEFAULT_DIFFUSE.png");

解决方案

I noticed this works fine in release mode, without making changes. I am pretty sure this is down to a bug so I'll post my findings on the Magick forums.

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