## ReadStream 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 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. |

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