/* 
 * The Python Imaging Library
 * $Id$
 *
 * copy image
 *
 * history:
 *	95-11-26 fl:	Moved from Imaging.c
 *	97-05-12 fl:	Added ImagingCopy2
 *	97-08-28 fl:	Allow imOut == NULL in ImagingCopy2
 *
 * Copyright (c) Fredrik Lundh 1995-97.
 * Copyright (c) Secret Labs AB 1997.
 *
 * See the README file for details on usage and redistribution.
 */


#include "Imaging.h"


static Imaging
_copy(Imaging imOut, Imaging imIn)
{
    int y;

    if (!imIn)
	return (Imaging) ImagingError_ValueError(NULL);

    imOut = ImagingNew2(imIn->mode, imOut, imIn);
    if (!imOut)
        return NULL;

    ImagingCopyInfo(imOut, imIn);

    if (imIn->block != NULL && imOut->block != NULL)
	memcpy(imOut->block, imIn->block, imIn->ysize * imIn->linesize);
    else
        for (y = 0; y < imIn->ysize; y++)
            memcpy(imOut->image[y], imIn->image[y], imIn->linesize);

    return imOut;
}

Imaging
ImagingCopy(Imaging imIn)
{
    return _copy(NULL, imIn);
}

Imaging
ImagingCopy2(Imaging imOut, Imaging imIn)
{
    return _copy(imOut, imIn);
}
