/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This file provides some global definitions needed by the image

 * conversion package.

 */

#ifndef IMAGE_GLOBALS_H

#define IMAGE_GLOBALS_H

/* Image Conversion function return codes. */

#define SCALEFAILURE    -1

#define SCALENOOP       0

#define SCALESUCCESS    1

/*

 * The constants needed to choose from among the many variants of image

 * conversion functions that can be constructed with the standard header

 * files.  The types of input for the image conversion functions are

 * broken down into 5 different attributes each with 2 to 4 different

 * variants:

 *

 *      SCALING:        SCALED or UNSCALED

 *      INPUT SIZE:     BYTEIN (8-bit) or INTIN (32-bit)

 *      ALPHA:          OPAQUE or ALPHA

 *      ORDER:          TDLR or RANDOM

 *      COLORMODEL:     ICM, DCM, DCM8 (8-bits for each component) or ANY

 *

 * For each attribute, a mask is defined with the "BITS" suffix which

 * identifies which bits contain the variation information for that

 * particular attribute.  The input information should be analyzed and

 * characterized for each of the above categories and the appropriate

 * bit constants OR'd together to produce a unique constant that

 * identifies which conversion function is needed.  The reason that

 * attributes of the output space are not indicated in the masks is

 * that typically only a single output device type needs to be supported

 * at a time and so a vector of the functions specific to the necessary

 * output device can be constructed at AWT initialization time and then

 * indexed into with the constant identifier that characterizes the

 * input data, which is only known and constantly varies at run-time.

 */

#define IMGCV_UNSCALED          (0 << 0)

#define IMGCV_SCALED            (1 << 0)

#define IMGCV_SCALEBITS         (1 << 0)

#define IMGCV_BYTEIN            (0 << 1)

#define IMGCV_INTIN             (1 << 1)

#define IMGCV_INSIZEBITS        (1 << 1)

#define IMGCV_OPAQUE            (0 << 2)

#define IMGCV_ALPHA             (1 << 2)

#define IMGCV_ALPHABITS         (1 << 2)

#define IMGCV_TDLRORDER         (0 << 3)

#define IMGCV_RANDORDER         (1 << 3)

#define IMGCV_ORDERBITS         (1 << 3)

#define IMGCV_ICM               (0 << 4)

#define IMGCV_DCM               (1 << 4)

#define IMGCV_DCM8              (2 << 4)

#define IMGCV_ANYCM             (3 << 4)

#define IMGCV_CMBITS            (3 << 4)

#define NUM_IMGCV               (1 << 6)        /* total # of IMGCV variants */

/*

 * The structure which holds the image conversion data.

 */

typedef struct {

    void *outbuf;

    void *maskbuf;

    void *fserrors;

} ImgConvertData;

/*

 * The standard structure which holds information about the pixels

 * used in the output device.

 */

typedef struct {

    int grayscale;

    int bitsperpixel;

    int rOff;

    int gOff;

    int bOff;

    int rScale;

    int gScale;

    int bScale;

} ImgColorData;

/*

 * The private data member attached to a ColorModel which caches

 * the information needed to characterize and use a ColorModel

 * object on the fly.

 */

typedef struct {

    int type;

    struct methodblock *mb;

} ImgCMData;

/*

 * The standard signature of all of the image conversion functions

 * that can be produced with this package of include files.

 */

/*

 * FIXME!

 */

typedef int ImgConvertFcn(void *colormodel,

                          int srcOX, int srcOY, int srcW, int srcH,

                          void *srcpix, int srcOff, int srcBPP, int srcScan,

                          int srcTotalWidth, int srcTotalHeight,

                          int dstTotalWidth, int dstTotalHeight,

                          ImgConvertData *cvdata, ImgColorData *clrdata);

/*

 * The type of the error matrix used in the ordered dithering code.

 */

typedef unsigned char uns_ordered_dither_array[8][8];

typedef char sgn_ordered_dither_array[8][8];

/*

 * The function provided for constructing the ordered dithering error

 * matrices based on a given quantum (i.e. the amplitude of the maximum

 * error values appearing in the matrix which should be the same as the

 * distance between adjacent allocated component values in the color cube).

 */

                                          int quantum);

extern void make_sgn_ordered_dither_array(char* oda, int errmin, int errmax);

/*

 * The function provided for calculating the contents of the ImgCMData

 * structure which can be attached to ColorModels to simplify the

 * work of characterizing their data.

 */

extern ImgCMData *img_getCMData(void *cmh);

#endif /* IMAGE_GLOBALS_H */