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1 /*
2   Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization
3   dedicated to making software imaging solutions freely available.
4 
5   You may not use this file except in compliance with the License.  You may
6   obtain a copy of the License at
7 
8     https://imagemagick.org/script/license.php
9 
10   Unless required by applicable law or agreed to in writing, software
11   distributed under the License is distributed on an "AS IS" BASIS,
12   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   See the License for the specific language governing permissions and
14   limitations under the License.
15 
16   MagickCore Binary Large OBjects methods.
17 */
18 #ifndef MAGICKCORE_BLOB_H
19 #define MAGICKCORE_BLOB_H
20 
21 #if defined(__cplusplus) || defined(c_plusplus)
22 extern "C" {
23 #endif
24 
25 #define MagickMaxBufferExtent  81920
26 
27 typedef enum
28 {
29   ReadMode,
30   WriteMode,
31   IOMode,
32   PersistMode
33 } MapMode;
34 
35 typedef ssize_t
36   (*CustomStreamHandler)(unsigned char *,const size_t,void *);
37 
38 typedef MagickOffsetType
39   (*CustomStreamSeeker)(const MagickOffsetType,const int,void *);
40 
41 typedef MagickOffsetType
42   (*CustomStreamTeller)(void *);
43 
44 typedef struct _CustomStreamInfo
45   CustomStreamInfo;
46 
47 #include "MagickCore/image.h"
48 #include "MagickCore/stream.h"
49 
50 extern MagickExport CustomStreamInfo
51   *AcquireCustomStreamInfo(ExceptionInfo *),
52   *DestroyCustomStreamInfo(CustomStreamInfo *);
53 
54 extern MagickExport FILE
55   *GetBlobFileHandle(const Image *) magick_attribute((__pure__));
56 
57 extern MagickExport Image
58   *BlobToImage(const ImageInfo *,const void *,const size_t,ExceptionInfo *),
59   *PingBlob(const ImageInfo *,const void *,const size_t,ExceptionInfo *),
60   *CustomStreamToImage(const ImageInfo *,ExceptionInfo *);
61 
62 extern MagickExport MagickBooleanType
63   BlobToFile(char *,const void *,const size_t,ExceptionInfo *),
64   FileToImage(Image *,const char *,ExceptionInfo *),
65   GetBlobError(const Image *) magick_attribute((__pure__)),
66   ImageToFile(Image *,char *,ExceptionInfo *),
67   InjectImageBlob(const ImageInfo *,Image *,Image *,const char *,
68     ExceptionInfo *),
69   IsBlobExempt(const Image *) magick_attribute((__pure__)),
70   IsBlobSeekable(const Image *) magick_attribute((__pure__)),
71   IsBlobTemporary(const Image *) magick_attribute((__pure__));
72 
73 extern MagickExport MagickSizeType
74   GetBlobSize(const Image *);
75 
76 extern MagickExport StreamHandler
77   GetBlobStreamHandler(const Image *) magick_attribute((__pure__));
78 
79 extern MagickExport void
80   *GetBlobStreamData(const Image *) magick_attribute((__pure__)),
81   DestroyBlob(Image *),
82   DuplicateBlob(Image *,const Image *),
83   *FileToBlob(const char *,const size_t,size_t *,ExceptionInfo *),
84   *ImageToBlob(const ImageInfo *,Image *,size_t *,ExceptionInfo *),
85   ImageToCustomStream(const ImageInfo *,Image *,ExceptionInfo *),
86   *ImagesToBlob(const ImageInfo *,Image *,size_t *,ExceptionInfo *),
87   ImagesToCustomStream(const ImageInfo *,Image *,ExceptionInfo *),
88   SetBlobExempt(Image *,const MagickBooleanType),
89   SetCustomStreamData(CustomStreamInfo *,void *),
90   SetCustomStreamReader(CustomStreamInfo *,CustomStreamHandler),
91   SetCustomStreamSeeker(CustomStreamInfo *,CustomStreamSeeker),
92   SetCustomStreamTeller(CustomStreamInfo *,CustomStreamTeller),
93   SetCustomStreamWriter(CustomStreamInfo *,CustomStreamHandler);
94 
95 #if defined(__cplusplus) || defined(c_plusplus)
96 }
97 #endif
98 
99 #endif
100