/src/dng_sdk/source/dng_file_stream.cpp
Line | Count | Source |
1 | | /*****************************************************************************/ |
2 | | // Copyright 2006-2007 Adobe Systems Incorporated |
3 | | // All Rights Reserved. |
4 | | // |
5 | | // NOTICE: Adobe permits you to use, modify, and distribute this file in |
6 | | // accordance with the terms of the Adobe license agreement accompanying it. |
7 | | /*****************************************************************************/ |
8 | | |
9 | | /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_file_stream.cpp#2 $ */ |
10 | | /* $DateTime: 2012/06/01 07:28:57 $ */ |
11 | | /* $Change: 832715 $ */ |
12 | | /* $Author: tknoll $ */ |
13 | | |
14 | | /*****************************************************************************/ |
15 | | |
16 | | #include "dng_file_stream.h" |
17 | | |
18 | | #include "dng_exceptions.h" |
19 | | |
20 | | /*****************************************************************************/ |
21 | | |
22 | | dng_file_stream::dng_file_stream (const char *filename, |
23 | | bool output, |
24 | | uint32 bufferSize) |
25 | | |
26 | 185k | : dng_stream ((dng_abort_sniffer *) NULL, |
27 | 185k | bufferSize, |
28 | 185k | 0) |
29 | | |
30 | 185k | , fFile (NULL) |
31 | | |
32 | 185k | { |
33 | | |
34 | 185k | fFile = fopen (filename, output ? "wb" : "rb"); |
35 | | |
36 | 185k | if (!fFile) |
37 | 0 | { |
38 | | |
39 | | #if qDNGValidate |
40 | | |
41 | | ReportError ("Unable to open file", |
42 | | filename); |
43 | | |
44 | | ThrowSilentError (); |
45 | | |
46 | | #else |
47 | | |
48 | 0 | ThrowOpenFile (); |
49 | | |
50 | 0 | #endif |
51 | |
|
52 | 0 | } |
53 | | |
54 | 185k | } |
55 | | |
56 | | /*****************************************************************************/ |
57 | | |
58 | | dng_file_stream::~dng_file_stream () |
59 | 185k | { |
60 | | |
61 | 185k | if (fFile) |
62 | 185k | { |
63 | 185k | fclose (fFile); |
64 | 185k | fFile = NULL; |
65 | 185k | } |
66 | | |
67 | 185k | } |
68 | | |
69 | | /*****************************************************************************/ |
70 | | |
71 | | uint64 dng_file_stream::DoGetLength () |
72 | 171k | { |
73 | | |
74 | 171k | if (fseek (fFile, 0, SEEK_END) != 0) |
75 | 0 | { |
76 | | |
77 | 0 | ThrowReadFile (); |
78 | |
|
79 | 0 | } |
80 | | |
81 | 171k | return (uint64) ftell (fFile); |
82 | | |
83 | 171k | } |
84 | | |
85 | | /*****************************************************************************/ |
86 | | |
87 | | void dng_file_stream::DoRead (void *data, |
88 | | uint32 count, |
89 | | uint64 offset) |
90 | 14.2M | { |
91 | | |
92 | 14.2M | if (fseek (fFile, (long) offset, SEEK_SET) != 0) |
93 | 0 | { |
94 | | |
95 | 0 | ThrowReadFile (); |
96 | |
|
97 | 0 | } |
98 | | |
99 | 14.2M | uint32 bytesRead = (uint32) fread (data, 1, count, fFile); |
100 | | |
101 | 14.2M | if (bytesRead != count) |
102 | 0 | { |
103 | | |
104 | 0 | ThrowReadFile (); |
105 | |
|
106 | 0 | } |
107 | | |
108 | 14.2M | } |
109 | | |
110 | | /*****************************************************************************/ |
111 | | |
112 | | void dng_file_stream::DoWrite (const void *data, |
113 | | uint32 count, |
114 | | uint64 offset) |
115 | 472k | { |
116 | | |
117 | 472k | if (fseek (fFile, (uint32) offset, SEEK_SET) != 0) |
118 | 0 | { |
119 | | |
120 | 0 | ThrowWriteFile (); |
121 | |
|
122 | 0 | } |
123 | | |
124 | 472k | uint32 bytesWritten = (uint32) fwrite (data, 1, count, fFile); |
125 | | |
126 | 472k | if (bytesWritten != count) |
127 | 0 | { |
128 | | |
129 | 0 | ThrowWriteFile (); |
130 | |
|
131 | 0 | } |
132 | | |
133 | 472k | } |
134 | | |
135 | | /*****************************************************************************/ |