[magick-users] creating an image from raw data

[Ken]

I'm trying to create an image object from raw image data. Here is the code I've been using.  It compiles fine but when it runs, it prints out this error in the image.read call.  I'm running on Red Hat Linux.  Any ideas on what's wrong?  Thanks for your help.


terminate called after throwing an instance of 'Magick::ErrorMissingDelegate'
  what():  ImageMagick: no decode delegate for this image format `'
Aborted



Image image;

void magicktest( void )
{

    struct picoGC    gc;
    unsigned char    red    ( 0 );
    unsigned char    green  ( 0 );
    unsigned char    blue   ( 0 );

    unsigned char* blobData = new unsigned char[100000];
    char* c=reinterpret_cast<char *>(blobData);
    size_t blobLen=0;

    cout << "read" << endl;

    ifstream         fs ( "../images/red_boat.raw", ifstream::in );

    if ( fs.good () )
    {
        for ( int y = 0; y < IMAGE_SIZE_Y; y++ )
        {
            for ( int x = 0; x < IMAGE_SIZE_X; x++ )
            {
                red     = fs.get ();
                green   = fs.get ();
                blue    = fs.get ();
                *c = red;
                c++;
                blobLen++;
                *c = green;
                c++;
                blobLen++;
                *c = blue;
                c++;
                blobLen++;

            }
        }
    }

    Blob blob(static_cast<const unsigned char*>(blobData), blobLen);
    Geometry geometry_raw(IMAGE_SIZE_X,IMAGE_SIZE_Y);
    Geometry geometry_scale(2*IMAGE_SIZE_X,2*IMAGE_SIZE_Y);
    Geometry geo;

    image.read(  blob, Geometry(IMAGE_SIZE_X,IMAGE_SIZE_Y));

..

}