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1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %                                                                             %
4 %                                                                             %
5 %                                                                             %
6 %                            M   M  PPPP   RRRR                               %
7 %                            MM MM  P   P  R   R                              %
8 %                            M M M  PPPP   RRRR                               %
9 %                            M   M  P      R R                                %
10 %                            M   M  P      R  R                               %
11 %                                                                             %
12 %                                                                             %
13 %                  Read/Write the Magick Persistent Registry.                 %
14 %                                                                             %
15 %                              Software Design                                %
16 %                                   Cristy                                    %
17 %                                 July 1992                                   %
18 %                                                                             %
19 %                                                                             %
20 %  Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization      %
21 %  dedicated to making software imaging solutions freely available.           %
22 %                                                                             %
23 %  You may not use this file except in compliance with the License.  You may  %
24 %  obtain a copy of the License at                                            %
25 %                                                                             %
26 %    http://www.imagemagick.org/script/license.php                            %
27 %                                                                             %
28 %  Unless required by applicable law or agreed to in writing, software        %
29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
31 %  See the License for the specific language governing permissions and        %
32 %  limitations under the License.                                             %
33 %                                                                             %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35 %
36 %
37 */
38 
39 /*
40   Include declarations.
41 */
42 #include "MagickCore/studio.h"
43 #include "MagickCore/blob.h"
44 #include "MagickCore/blob-private.h"
45 #include "MagickCore/exception.h"
46 #include "MagickCore/exception-private.h"
47 #include "MagickCore/magick.h"
48 #include "MagickCore/memory_.h"
49 #include "MagickCore/registry.h"
50 #include "MagickCore/quantum-private.h"
51 #include "MagickCore/static.h"
52 #include "MagickCore/string_.h"
53 #include "MagickCore/module.h"
54 
55 /*
56   Forward declarations.
57 */
58 static MagickBooleanType
59   WriteMPRImage(const ImageInfo *,Image *,ExceptionInfo *);
60 
61 /*
62 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
63 %                                                                             %
64 %                                                                             %
65 %                                                                             %
66 %   R e a d M P R I m a g e                                                   %
67 %                                                                             %
68 %                                                                             %
69 %                                                                             %
70 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
71 %
72 %  ReadMPRImage() reads a Magick Persistent Registry image as a blob from
73 %  memory.  It allocates the memory necessary for the new Image structure and
74 %  returns a pointer to the new image.
75 %
76 %  The format of the ReadMPRImage method is:
77 %
78 %      Image *ReadMPRImage(const ImageInfo *image_info,
79 %        ExceptionInfo *exception)
80 %
81 %  A description of each parameter follows:
82 %
83 %    o image_info: the image info.
84 %
85 %    o exception: return any errors or warnings in this structure.
86 %
87 */
ReadMPRImage(const ImageInfo * image_info,ExceptionInfo * exception)88 static Image *ReadMPRImage(const ImageInfo *image_info,ExceptionInfo *exception)
89 {
90   Image
91     *image;
92 
93   assert(image_info != (const ImageInfo *) NULL);
94   assert(image_info->signature == MagickCoreSignature);
95   if (image_info->debug != MagickFalse)
96     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
97       image_info->filename);
98   assert(exception != (ExceptionInfo *) NULL);
99   assert(exception->signature == MagickCoreSignature);
100   image=(Image *) GetImageRegistry(ImageRegistryType,image_info->filename,
101     exception);
102   if (image != (Image *) NULL)
103     (void) SyncImageSettings(image_info,image,exception);
104   return(image);
105 }
106 
107 /*
108 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
109 %                                                                             %
110 %                                                                             %
111 %                                                                             %
112 %   R e g i s t e r M P R I m a g e                                           %
113 %                                                                             %
114 %                                                                             %
115 %                                                                             %
116 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
117 %
118 %  RegisterMPRImage() adds attributes for the MPR image format to
119 %  the list of supported formats.  The attributes include the image format
120 %  tag, a method to read and/or write the format, whether the format
121 %  supports the saving of more than one frame to the same file or blob,
122 %  whether the format supports native in-memory I/O, and a brief
123 %  description of the format.
124 %
125 %  The format of the RegisterMPRImage method is:
126 %
127 %      size_t RegisterMPRImage(void)
128 %
129 */
RegisterMPRImage(void)130 ModuleExport size_t RegisterMPRImage(void)
131 {
132   MagickInfo
133     *entry;
134 
135   entry=AcquireMagickInfo("MPR","MPR","Magick Persistent Registry");
136   entry->decoder=(DecodeImageHandler *) ReadMPRImage;
137   entry->encoder=(EncodeImageHandler *) WriteMPRImage;
138   entry->flags^=CoderAdjoinFlag;
139   entry->format_type=ImplicitFormatType;
140   entry->flags|=CoderStealthFlag;
141   (void) RegisterMagickInfo(entry);
142   entry=AcquireMagickInfo("MPR","MPRI","Magick Persistent Registry");
143   entry->decoder=(DecodeImageHandler *) ReadMPRImage;
144   entry->encoder=(EncodeImageHandler *) WriteMPRImage;
145   entry->flags^=CoderAdjoinFlag;
146   entry->format_type=ImplicitFormatType;
147   entry->flags|=CoderStealthFlag;
148   (void) RegisterMagickInfo(entry);
149   return(MagickImageCoderSignature);
150 }
151 
152 /*
153 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
154 %                                                                             %
155 %                                                                             %
156 %                                                                             %
157 %   U n r e g i s t e r M P R I m a g e                                       %
158 %                                                                             %
159 %                                                                             %
160 %                                                                             %
161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
162 %
163 %  UnregisterMPRImage() removes format registrations made by the
164 %  MPR module from the list of supported formats.
165 %
166 %  The format of the UnregisterMPRImage method is:
167 %
168 %      UnregisterMPRImage(void)
169 %
170 */
UnregisterMPRImage(void)171 ModuleExport void UnregisterMPRImage(void)
172 {
173   (void) UnregisterMagickInfo("MPRI");
174   (void) UnregisterMagickInfo("MPR");
175 }
176 
177 /*
178 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
179 %                                                                             %
180 %                                                                             %
181 %                                                                             %
182 %   W r i t e M P R I m a g e                                                 %
183 %                                                                             %
184 %                                                                             %
185 %                                                                             %
186 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
187 %
188 %  WriteMPRImage() writes an image into the Magick Persistent Registry
189 %  image as a blob from memory.  It allocates the memory necessary for the
190 %  new Image structure and returns a pointer to the new image.
191 %
192 %  The format of the WriteMPRImage method is:
193 %
194 %      MagickBooleanType WriteMPRImage(const ImageInfo *image_info,
195 %        Image *image,ExceptionInfo *exception)
196 %
197 %  A description of each parameter follows.
198 %
199 %    o image_info: the image info.
200 %
201 %    o image:  The image.
202 %
203 %    o exception: return any errors or warnings in this structure.
204 %
205 */
WriteMPRImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)206 static MagickBooleanType WriteMPRImage(const ImageInfo *image_info,Image *image,
207   ExceptionInfo *exception)
208 {
209   MagickBooleanType
210     status;
211 
212   assert(image_info != (const ImageInfo *) NULL);
213   assert(image_info->signature == MagickCoreSignature);
214   assert(image != (Image *) NULL);
215   assert(image->signature == MagickCoreSignature);
216   magick_unreferenced(image_info);
217   if (image->debug != MagickFalse)
218     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
219   status=SetImageRegistry(ImageRegistryType,image->filename,image,exception);
220   return(status);
221 }
222