| 1 | /****************************************************************************** |
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| 2 | * SAGE - Scalable Adaptive Graphics Environment |
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| 3 | * |
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| 4 | * Copyright (C) 2004 Electronic Visualization Laboratory, |
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| 5 | * University of Illinois at Chicago |
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| 6 | * |
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| 7 | * All rights reserved. |
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| 8 | * |
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| 9 | * Redistribution and use in source and binary forms, with or without |
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| 10 | * modification, are permitted provided that the following conditions are met: |
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| 11 | * |
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| 12 | * * Redistributions of source code must retain the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer. |
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| 14 | * * Redistributions in binary form must reproduce the above |
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| 15 | * copyright notice, this list of conditions and the following disclaimer |
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| 16 | * in the documentation and/or other materials provided with the distribution. |
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| 17 | * * Neither the name of the University of Illinois at Chicago nor |
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| 18 | * the names of its contributors may be used to endorse or promote |
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| 19 | * products derived from this software without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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| 24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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| 25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 32 | * |
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| 33 | * Direct questions, comments etc about SAGE to http://www.evl.uic.edu/cavern/forum/ |
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| 34 | * |
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| 35 | *****************************************************************************/ |
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| 36 | |
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| 37 | /* |
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| 38 | * Header for generic-image access routines: |
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| 39 | * getimginfo(), getimgdata() |
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| 40 | */ |
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| 41 | |
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| 42 | |
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| 43 | #define I_UNKNOWN 0 /* unknown type or inaccessible */ |
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| 44 | #define I_TIFF 1 /* TIFF raster image */ |
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| 45 | #define I_SGI 2 /* SGI raster image */ |
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| 46 | #define I_SUNRAS 3 /* Sun raster file */ |
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| 47 | #define I_SOFT 4 /* SoftImage raster image */ |
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| 48 | #define I_GIF 5 /* GIF image */ |
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| 49 | #define I_PNM 6 /* Portable bit/gray/pixmap */ |
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| 50 | #define I_RAW 7 /* raw image with imginfo header */ |
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| 51 | #define I_JPEG 8 /* JPEG image */ |
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| 52 | |
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| 53 | struct imginfo { |
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| 54 | int kind; /* Image type -- I_TIFF, I_SGI, ... */ |
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| 55 | int xsize, ysize; /* Image size */ |
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| 56 | int nsamp; /* Samples per pixel of image data */ |
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| 57 | int sampbits; /* Bits per sample */ |
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| 58 | int mapsize; /* Colormap entries (0 if absent) */ |
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| 59 | int mapsamp; /* Samples per colormap entry (0 if absent) */ |
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| 60 | }; |
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| 61 | |
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| 62 | typedef struct img { |
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| 63 | #define IT_LONG 0 /* 32 bits per, ABGR, A is low-address byte */ |
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| 64 | #define IT_BIT 1 /* bit packed in bytes, MSB first */ |
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| 65 | #define IT_RGB 2 /* 24 bits per RGB, R is low-address byte */ |
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| 66 | #define IT_BYTE 3 /* 8 bits gray-scale */ |
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| 67 | int type; |
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| 68 | int xsize, ysize; /* image size in pixels */ |
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| 69 | int rowbytes; /* size of each image row, in bytes */ |
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| 70 | unsigned char *data; /* image data */ |
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| 71 | } IMG; |
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| 72 | |
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| 73 | /* |
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| 74 | * getimginfo returns image type, one of the I_* below. |
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| 75 | * It prints an error (only) if the file cannot even be opened. |
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| 76 | * |
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| 77 | * getimgdata diagnoses image type and also |
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| 78 | */ |
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| 79 | extern int getimginfo( char *fname, struct imginfo *info ); |
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| 80 | |
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| 81 | extern unsigned char *getimgdata( |
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| 82 | const char *fname, /* file name */ |
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| 83 | const struct imginfo *knowninfo, /* image info, if you have it */ |
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| 84 | struct imginfo *info, /* image info, filled in by getimgdata */ |
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| 85 | int yup, /* first row is... 0:bottom, 1:top */ |
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| 86 | int bpp, /* bytes per pixel, or 0:use image */ |
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| 87 | int byteorder /* 0: RGBA, 1: ABGR */ |
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| 88 | ); |
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| 89 | extern char *imgtypename[]; |
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