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| 2 | pj | 1 | /* |
| 2 | * Copyright (c) 1994 by Gregory P. Ward. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * This file is part of the MNI front end of the Berkeley MPEG decoder. |
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| 6 | * |
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| 7 | * Permission to use, copy, modify, and distribute this software and its |
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| 8 | * documentation for any purpose, without fee, and without written agreement is |
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| 9 | * hereby granted, provided that the above copyright notice and the following |
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| 10 | * two paragraphs appear in all copies of this software. |
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| 11 | * |
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| 12 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT, |
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| 13 | * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT |
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| 14 | * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE |
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| 15 | * UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF |
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| 16 | * SUCH DAMAGE. |
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| 17 | * |
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| 18 | * THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT |
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| 19 | * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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| 20 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER |
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| 21 | * IS ON AN "AS IS" BASIS, AND THE AUTHOR HAS NO OBLIGATION TO PROVIDE |
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| 22 | * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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| 23 | */ |
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| 24 | /* |
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| 25 | * Portions of this software Copyright (c) 1995 Brown University. |
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| 26 | * All rights reserved. |
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| 27 | * |
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| 28 | * Permission to use, copy, modify, and distribute this software and its |
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| 29 | * documentation for any purpose, without fee, and without written agreement |
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| 30 | * is hereby granted, provided that the above copyright notice and the |
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| 31 | * following two paragraphs appear in all copies of this software. |
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| 32 | * |
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| 33 | * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR DIRECT, |
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| 34 | * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT |
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| 35 | * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN |
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| 36 | * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 37 | * |
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| 38 | * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT |
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| 39 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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| 40 | * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" |
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| 41 | * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, |
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| 42 | * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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| 43 | */ |
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| 44 | |||
| 45 | /* ----------------------------- MNI Header ----------------------------------- |
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| 46 | @NAME : mpeg.h |
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| 47 | @INPUT : |
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| 48 | @OUTPUT : |
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| 49 | @RETURNS : |
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| 50 | @DESCRIPTION: Types and function prototypes needed for applications to |
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| 51 | use the Berkely MPEG decoding engine via the MNI front |
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| 52 | end. |
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| 53 | @METHOD : |
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| 54 | @GLOBALS : Types defined: |
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| 55 | ImageDesc - structure giving height, width, etc. |
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| 56 | DitherEnum - the different dither types supported by |
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| 57 | the decoding engine |
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| 58 | @CALLS : |
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| 59 | @CREATED : Greg Ward, 94/6/16. |
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| 60 | @MODIFIED : Greg Ward, 94/9/12 (based on John Cristy's fixes): made |
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| 61 | more amenable to use with other libraries that also |
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| 62 | happen to define TRUE, FALSE, [Bb]oolean, and added |
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| 63 | PROTO macro |
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| 64 | ---------------------------------------------------------------------------- */ |
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| 65 | |||
| 66 | #ifndef __MPEG_H |
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| 67 | #define __MPEG_H |
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| 68 | |||
| 69 | #include <stdio.h> |
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| 70 | |||
| 71 | /* An attempt at a portable and integrable boolean type... */ |
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| 72 | |||
| 73 | #if (!defined(TRUE) || !defined(FALSE)) |
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| 74 | # define TRUE (char) 1 |
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| 75 | # define FALSE (char) 0 |
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| 76 | #endif |
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| 77 | |||
| 78 | #ifndef BOOLEAN_TYPE_EXISTS |
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| 79 | typedef char Boolean; |
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| 80 | #define BOOLEAN_TYPE_EXISTS |
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| 81 | #endif |
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| 82 | |||
| 83 | typedef struct |
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| 84 | { |
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| 85 | short red, green, blue; |
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| 86 | } ColormapEntry; |
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| 87 | |||
| 88 | typedef struct |
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| 89 | { |
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| 90 | int Height; /* in pixels */ |
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| 91 | int Width; |
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| 92 | int Depth; /* image depth (bits) */ |
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| 93 | int PixelSize; /* bits actually stored per pixel */ |
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| 94 | int Size; /* bytes for whole image */ |
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| 95 | int BitmapPad; /* "quantum" of a scanline -- each scanline */ |
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| 96 | /* starts on an even interval of this */ |
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| 97 | /* many bits */ |
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| 98 | int PictureRate; /* required number of frames/sec [?] */ |
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| 99 | int BitRate; /* ??? */ |
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| 100 | |||
| 101 | VidStream *vid_stream; /* Pointer to the vid stream itself */ |
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| 102 | |||
| 103 | int ColormapSize; |
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| 104 | ColormapEntry *Colormap; /* an array of ColormapSize entries */ |
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| 105 | } ImageDesc; |
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| 106 | |||
| 107 | #define DitherEnum int |
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| 108 | |||
| 109 | typedef enum |
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| 110 | { |
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| 111 | MPEG_DITHER, |
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| 112 | MPEG_QUIET, |
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| 113 | MPEG_LUM_RANGE, |
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| 114 | MPEG_CR_RANGE, |
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| 115 | MPEG_CB_RANGE, |
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| 116 | MPEG_CMAP_INDEX |
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| 117 | } MPEGOptionEnum; |
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| 118 | |||
| 119 | /* Kludge so we can compile under ANSI or K&R */ |
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| 120 | |||
| 121 | #undef PROTO |
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| 122 | #if defined(__STDC__) || defined(__cplusplus) |
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| 123 | #define PROTO(formal_parameters) formal_parameters |
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| 124 | #else |
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| 125 | #define const |
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| 126 | #define PROTO(formal_parameters) () |
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| 127 | #endif |
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| 128 | |||
| 129 | /* Function prototypes (all are defined in wrapper.c) */ |
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| 130 | |||
| 131 | Boolean OpenMPEG PROTO((FILE *MPEGfile, ImageDesc *ImgInfo)); |
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| 132 | void CloseMPEG PROTO((ImageDesc *ImgInfo)); |
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| 133 | void RewindMPEG PROTO((FILE *MPEGfile, ImageDesc *Image)); |
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| 134 | void SetMPEGOption PROTO((ImageDesc *Info, MPEGOptionEnum Option, int value)); |
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| 135 | Boolean GetMPEGFrame PROTO((ImageDesc *image, char *Frame)); |
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| 136 | |||
| 137 | #endif /* __MPEG_H */ |