1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright (C) 1991, 1992, Thomas G. Lane.
* Part of the Independent JPEG Group's software.
* See the file Copyright for more details.
*
* Copyright (c) 1993 Brian C. Smith, The Regents of the University
* of California
* All rights reserved.
*
* Copyright (c) 1994 Kongji Huang and Brian C. Smith.
* Cornell University
* All rights reserved.
*
* Copyright (c) 1997 OSIRIS Team. Digital Imaging Unit
* University Hospital of Geneva
* Changes made by Yves Ligier and David Bandon
* All rights reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL CORNELL UNIVERSITY BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF CORNELL
* UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* CORNELL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND CORNELL UNIVERSITY HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/* Papyrus 3 redefined basic types */
#ifndef FILENAME83 /* this is for the normal machines ... */
#ifndef PapyTypeDef3H
#include "PapyTypeDef3.h"
#endif
#else /* FILENAME83 defined for the DOS machines */
#ifndef PapyTypeDef3H
#include "PAPYDEF3.h"
#endif
#endif /* FILENAME83 defined */
#ifndef _IO
#define _IO
#include "JPEG.H"
/*
* Size of the input and output buffer
*/
#define JPEG_BUF_SIZE 4096
/*
* The following variables keep track of the input and output
* buffer for the JPEG data.
*/
extern PapyUChar outputBuffer[JPEG_BUF_SIZE]; /* output buffer */
extern PapyULong numOutputBytes; /* bytes in the output buffer */
extern PapyUChar *inputBuffer; /* Input buffer for JPEG data */
extern int inputBufferOffset; /* Offset of current byte */
extern PapyUChar *readimBuffer; /* input buffer for image data 8 bytes (DB) */
extern PapyUShort *readim16Buffer; /* input buffer for image data 16bytes (DB) */
extern int readimBufferOffset; /* Offset of current byte */
/*
* the output file pointer.
*/
extern PAPY_FILE OutFile;
/*
*--------------------------------------------------------------
*
* EmitByte --
*
* Write a single byte out to the output buffer, and
* flush if it's full.
*
* Results:
* None.
*
* Side effects:
* The outp[ut buffer may get flushed.
*
*--------------------------------------------------------------
*/
#define EmitByte(val) { \
if (numOutputBytes >= JPEG_BUF_SIZE) { \
FlushBytes(); \
} \
outputBuffer[numOutputBytes++] = (PapyUChar)(val); \
}
/*
*--------------------------------------------------------------
*
* GetJpegChar, UnGetJpegChar --
*
* Macros to get the next character from the input stream.
*
* Results:
* GetJpegChar returns the next character in the stream, or EOF
* UnGetJpegChar returns nothing.
*
* Side effects:
* A byte is consumed or put back into the inputBuffer.
*
*--------------------------------------------------------------
*/
#define GetJpegChar() (inputBuffer [inputBufferOffset++]) \
#define UnGetJpegChar(ch) (inputBuffer[--inputBufferOffset]=(ch))
/*
*--------------------------------------------------------------
*
* GetImChar and GetImShort
*
* Macros to get the next character or short from the input stream.
*
* Results:
* GetImChar returns the next character in the stream, or EOF
* GetImShort returns the next Short in the stream, or EOF
*
* Side effects:
* A byte is consumed or put back into the readimBuffer.
*
*--------------------------------------------------------------
*/
#define GetImChar() (readimBuffer[readimBufferOffset++])
#define GetImShort() (readim16Buffer[readimBufferOffset++])
#endif /* _IO */
|
