| 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 | /* @(#)rasterfile.h 1.1 86/07/07 SMI */ |
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| 38 | |
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| 39 | /* |
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| 40 | * Description of header for files containing raster images |
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| 41 | */ |
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| 42 | struct rasterfile { |
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| 43 | int ras_magic; /* magic number */ |
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| 44 | int ras_width; /* width (pixels) of image */ |
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| 45 | int ras_height; /* height (pixels) of image */ |
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| 46 | int ras_depth; /* depth (1, 8, or 24 bits) of pixel */ |
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| 47 | int ras_length; /* length (bytes) of image */ |
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| 48 | int ras_type; /* type of file; see RT_* below */ |
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| 49 | int ras_maptype; /* type of colormap; see RMT_* below */ |
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| 50 | int ras_maplength; /* length (bytes) of following map */ |
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| 51 | /* color map follows for ras_maplength bytes, followed by image */ |
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| 52 | }; |
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| 53 | #define RAS_MAGIC 0x59a66a95 |
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| 54 | |
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| 55 | /* Sun supported ras_type's */ |
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| 56 | #define RT_OLD 0 /* Raw pixrect image in 68000 byte order */ |
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| 57 | #define RT_STANDARD 1 /* Raw pixrect image in 68000 byte order */ |
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| 58 | #define RT_BYTE_ENCODED 2 /* Run-length compression of bytes */ |
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| 59 | #define RT_EXPERIMENTAL 0xffff /* Reserved for testing */ |
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| 60 | |
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| 61 | /* Sun registered ras_maptype's */ |
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| 62 | #define RMT_RAW 2 |
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| 63 | /* Sun supported ras_maptype's */ |
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| 64 | #define RMT_NONE 0 /* ras_maplength is expected to be 0 */ |
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| 65 | #define RMT_EQUAL_RGB 1 /* red[ras_maplength/3],green[],blue[] */ |
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| 66 | |
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| 67 | /* |
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| 68 | * NOTES: |
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| 69 | * Each line of the image is rounded out to a multiple of 16 bits. |
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| 70 | * This corresponds to the rounding convention used by the memory pixrect |
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| 71 | * package (/usr/include/pixrect/memvar.h) of the SunWindows system. |
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| 72 | * The ras_encoding field (always set to 0 by Sun's supported software) |
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| 73 | * was renamed to ras_length in release 2.0. As a result, rasterfiles |
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| 74 | * of type 0 generated by the old software claim to have 0 length; for |
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| 75 | * compatibility, code reading rasterfiles must be prepared to compute the |
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| 76 | * true length from the width, height, and depth fields. |
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| 77 | */ |
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