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
|
/*****************************************************************************/
// Copyright 2006-2007 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_file_stream.cpp#2 $ */
/* $DateTime: 2012/06/01 07:28:57 $ */
/* $Change: 832715 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#include "dng_file_stream.h"
#include "dng_exceptions.h"
/*****************************************************************************/
dng_file_stream::dng_file_stream (const char *filename,
bool output,
uint32 bufferSize)
: dng_stream ((dng_abort_sniffer *) NULL,
bufferSize,
0)
, fFile (NULL)
{
fFile = fopen (filename, output ? "wb" : "rb");
if (!fFile)
{
#if qDNGValidate
ReportError ("Unable to open file",
filename);
ThrowSilentError ();
#else
ThrowOpenFile ();
#endif
}
}
/*****************************************************************************/
dng_file_stream::~dng_file_stream ()
{
if (fFile)
{
fclose (fFile);
fFile = NULL;
}
}
/*****************************************************************************/
uint64 dng_file_stream::DoGetLength ()
{
if (fseek (fFile, 0, SEEK_END) != 0)
{
ThrowReadFile ();
}
return (uint64) ftell (fFile);
}
/*****************************************************************************/
void dng_file_stream::DoRead (void *data,
uint32 count,
uint64 offset)
{
if (fseek (fFile, (long) offset, SEEK_SET) != 0)
{
ThrowReadFile ();
}
uint32 bytesRead = (uint32) fread (data, 1, count, fFile);
if (bytesRead != count)
{
ThrowReadFile ();
}
}
/*****************************************************************************/
void dng_file_stream::DoWrite (const void *data,
uint32 count,
uint64 offset)
{
if (fseek (fFile, (uint32) offset, SEEK_SET) != 0)
{
ThrowWriteFile ();
}
uint32 bytesWritten = (uint32) fwrite (data, 1, count, fFile);
if (bytesWritten != count)
{
ThrowWriteFile ();
}
}
/*****************************************************************************/
|
