J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-1998 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * This file provides some global definitions needed by the image |
| 28 | * conversion package. |
| 29 | */ |
| 30 | |
| 31 | #ifndef IMAGE_GLOBALS_H |
| 32 | #define IMAGE_GLOBALS_H |
| 33 | |
| 34 | |
| 35 | /* Image Conversion function return codes. */ |
| 36 | #define SCALEFAILURE -1 |
| 37 | #define SCALENOOP 0 |
| 38 | #define SCALESUCCESS 1 |
| 39 | |
| 40 | /* |
| 41 | * The constants needed to choose from among the many variants of image |
| 42 | * conversion functions that can be constructed with the standard header |
| 43 | * files. The types of input for the image conversion functions are |
| 44 | * broken down into 5 different attributes each with 2 to 4 different |
| 45 | * variants: |
| 46 | * |
| 47 | * SCALING: SCALED or UNSCALED |
| 48 | * INPUT SIZE: BYTEIN (8-bit) or INTIN (32-bit) |
| 49 | * ALPHA: OPAQUE or ALPHA |
| 50 | * ORDER: TDLR or RANDOM |
| 51 | * COLORMODEL: ICM, DCM, DCM8 (8-bits for each component) or ANY |
| 52 | * |
| 53 | * For each attribute, a mask is defined with the "BITS" suffix which |
| 54 | * identifies which bits contain the variation information for that |
| 55 | * particular attribute. The input information should be analyzed and |
| 56 | * characterized for each of the above categories and the appropriate |
| 57 | * bit constants OR'd together to produce a unique constant that |
| 58 | * identifies which conversion function is needed. The reason that |
| 59 | * attributes of the output space are not indicated in the masks is |
| 60 | * that typically only a single output device type needs to be supported |
| 61 | * at a time and so a vector of the functions specific to the necessary |
| 62 | * output device can be constructed at AWT initialization time and then |
| 63 | * indexed into with the constant identifier that characterizes the |
| 64 | * input data, which is only known and constantly varies at run-time. |
| 65 | */ |
| 66 | #define IMGCV_UNSCALED (0 << 0) |
| 67 | #define IMGCV_SCALED (1 << 0) |
| 68 | #define IMGCV_SCALEBITS (1 << 0) |
| 69 | #define IMGCV_BYTEIN (0 << 1) |
| 70 | #define IMGCV_INTIN (1 << 1) |
| 71 | #define IMGCV_INSIZEBITS (1 << 1) |
| 72 | #define IMGCV_OPAQUE (0 << 2) |
| 73 | #define IMGCV_ALPHA (1 << 2) |
| 74 | #define IMGCV_ALPHABITS (1 << 2) |
| 75 | #define IMGCV_TDLRORDER (0 << 3) |
| 76 | #define IMGCV_RANDORDER (1 << 3) |
| 77 | #define IMGCV_ORDERBITS (1 << 3) |
| 78 | #define IMGCV_ICM (0 << 4) |
| 79 | #define IMGCV_DCM (1 << 4) |
| 80 | #define IMGCV_DCM8 (2 << 4) |
| 81 | #define IMGCV_ANYCM (3 << 4) |
| 82 | #define IMGCV_CMBITS (3 << 4) |
| 83 | |
| 84 | #define NUM_IMGCV (1 << 6) /* total # of IMGCV variants */ |
| 85 | |
| 86 | /* |
| 87 | * The structure which holds the image conversion data. |
| 88 | */ |
| 89 | typedef struct { |
| 90 | void *outbuf; |
| 91 | void *maskbuf; |
| 92 | void *fserrors; |
| 93 | } ImgConvertData; |
| 94 | |
| 95 | /* |
| 96 | * The standard structure which holds information about the pixels |
| 97 | * used in the output device. |
| 98 | */ |
| 99 | typedef struct { |
| 100 | int grayscale; |
| 101 | int bitsperpixel; |
| 102 | int rOff; |
| 103 | int gOff; |
| 104 | int bOff; |
| 105 | int rScale; |
| 106 | int gScale; |
| 107 | int bScale; |
| 108 | } ImgColorData; |
| 109 | |
| 110 | /* |
| 111 | * The private data member attached to a ColorModel which caches |
| 112 | * the information needed to characterize and use a ColorModel |
| 113 | * object on the fly. |
| 114 | */ |
| 115 | typedef struct { |
| 116 | int type; |
| 117 | struct methodblock *mb; |
| 118 | } ImgCMData; |
| 119 | |
| 120 | /* |
| 121 | * The standard signature of all of the image conversion functions |
| 122 | * that can be produced with this package of include files. |
| 123 | */ |
| 124 | |
| 125 | /* |
| 126 | * FIXME! |
| 127 | */ |
| 128 | typedef int ImgConvertFcn(void *colormodel, |
| 129 | int srcOX, int srcOY, int srcW, int srcH, |
| 130 | void *srcpix, int srcOff, int srcBPP, int srcScan, |
| 131 | int srcTotalWidth, int srcTotalHeight, |
| 132 | int dstTotalWidth, int dstTotalHeight, |
| 133 | ImgConvertData *cvdata, ImgColorData *clrdata); |
| 134 | |
| 135 | /* |
| 136 | * The type of the error matrix used in the ordered dithering code. |
| 137 | */ |
| 138 | typedef unsigned char uns_ordered_dither_array[8][8]; |
| 139 | typedef char sgn_ordered_dither_array[8][8]; |
| 140 | |
| 141 | /* |
| 142 | * The function provided for constructing the ordered dithering error |
| 143 | * matrices based on a given quantum (i.e. the amplitude of the maximum |
| 144 | * error values appearing in the matrix which should be the same as the |
| 145 | * distance between adjacent allocated component values in the color cube). |
| 146 | */ |
| 147 | extern void make_uns_ordered_dither_array(uns_ordered_dither_array oda, |
| 148 | int quantum); |
| 149 | extern void make_sgn_ordered_dither_array(char* oda, int errmin, int errmax); |
| 150 | |
| 151 | /* |
| 152 | * The function provided for calculating the contents of the ImgCMData |
| 153 | * structure which can be attached to ColorModels to simplify the |
| 154 | * work of characterizing their data. |
| 155 | */ |
| 156 | extern ImgCMData *img_getCMData(void *cmh); |
| 157 | |
| 158 | #endif /* IMAGE_GLOBALS_H */ |