ReadStream() makes the image pixels available to a user supplied callback method immediately upon reading a scanline with the ReadImage() method.

The format of the ReadStream() method is:

  Image *ReadStream(const ImageInfo *image_info,StreamHandler stream,
    ExceptionInfo *exception)

A description of each parameter follows:

image_info

the image info.

stream

a callback method.

exception

return any errors or warnings in this structure.

WriteStream() makes the image pixels available to a user supplied callback method immediately upon writing pixel data with the WriteImage() method.

The format of the WriteStream() method is:

  MagickBooleanType WriteStream(const ImageInfo *image_info,Image *,
    StreamHandler stream)

A description of each parameter follows:

image_info

the image info.

stream

A callback method.