cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % FFFFF DDDD % |
| 7 | % F D D % |
| 8 | % FFF D D % |
| 9 | % F D D % |
| 10 | % F DDDD % |
| 11 | % % |
| 12 | % % |
| 13 | % Retrieve An Image Via a File Descriptor. % |
| 14 | % % |
| 15 | % Software Design % |
cristy | de984cd | 2013-12-01 14:49:27 +0000 | [diff] [blame] | 16 | % Cristy % |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 17 | % Bill Radcliffe % |
| 18 | % March 2000 % |
| 19 | % % |
| 20 | % % |
Cristy | 7ce65e7 | 2015-12-12 18:03:16 -0500 | [diff] [blame] | 21 | % Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization % |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 22 | % dedicated to making software imaging solutions freely available. % |
| 23 | % % |
| 24 | % You may not use this file except in compliance with the License. You may % |
| 25 | % obtain a copy of the License at % |
| 26 | % % |
| 27 | % http://www.imagemagick.org/script/license.php % |
| 28 | % % |
| 29 | % Unless required by applicable law or agreed to in writing, software % |
| 30 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 31 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 32 | % See the License for the specific language governing permissions and % |
| 33 | % limitations under the License. % |
| 34 | % % |
| 35 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 36 | % |
| 37 | % |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | Include declarations. |
| 42 | */ |
| 43 | #include "MagickCore/studio.h" |
| 44 | #include "MagickCore/blob.h" |
| 45 | #include "MagickCore/blob-private.h" |
| 46 | #include "MagickCore/constitute.h" |
| 47 | #include "MagickCore/exception.h" |
| 48 | #include "MagickCore/exception-private.h" |
| 49 | #include "MagickCore/image.h" |
| 50 | #include "MagickCore/image-private.h" |
| 51 | #include "MagickCore/list.h" |
| 52 | #include "MagickCore/magick.h" |
| 53 | #include "MagickCore/memory_.h" |
| 54 | #include "MagickCore/module.h" |
| 55 | #include "MagickCore/quantum-private.h" |
| 56 | #include "MagickCore/static.h" |
| 57 | #include "MagickCore/resource_.h" |
| 58 | #include "MagickCore/string_.h" |
| 59 | #include "MagickCore/string-private.h" |
| 60 | #include "MagickCore/utility.h" |
| 61 | |
| 62 | /* |
| 63 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 64 | % % |
| 65 | % % |
| 66 | % % |
| 67 | % R e a d F D I m a g e % |
| 68 | % % |
| 69 | % % |
| 70 | % % |
| 71 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 72 | % |
| 73 | % ReadFDImage retrieves an image via a file descriptor, decodes the image, |
| 74 | % and returns it. It allocates the memory necessary for the new Image |
| 75 | % structure and returns a pointer to the new image. |
| 76 | % |
| 77 | % The format of the ReadFDImage method is: |
| 78 | % |
| 79 | % Image *ReadFDImage(const ImageInfo *image_info,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 | */ |
| 88 | static Image *ReadFDImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| 89 | { |
| 90 | Image |
| 91 | *image; |
| 92 | |
| 93 | ImageInfo |
| 94 | *read_info; |
| 95 | |
| 96 | /* |
| 97 | Open image file. |
| 98 | */ |
| 99 | assert(image_info != (const ImageInfo *) NULL); |
cristy | e1c94d9 | 2015-06-28 12:16:33 +0000 | [diff] [blame] | 100 | assert(image_info->signature == MagickCoreSignature); |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 101 | if (image_info->debug != MagickFalse) |
| 102 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 103 | image_info->filename); |
| 104 | assert(exception != (ExceptionInfo *) NULL); |
cristy | e1c94d9 | 2015-06-28 12:16:33 +0000 | [diff] [blame] | 105 | assert(exception->signature == MagickCoreSignature); |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 106 | read_info=CloneImageInfo(image_info); |
| 107 | read_info->file=fdopen(StringToLong(image_info->filename),"rb"); |
cristy | 12d1f29 | 2015-03-16 11:16:17 +0000 | [diff] [blame] | 108 | if ((read_info->file == (FILE *) NULL) || |
| 109 | (IsGeometry(image_info->filename) == MagickFalse)) |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 110 | { |
cristy | 12d1f29 | 2015-03-16 11:16:17 +0000 | [diff] [blame] | 111 | read_info=DestroyImageInfo(read_info); |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 112 | ThrowFileException(exception,BlobError,"UnableToOpenBlob", |
| 113 | image_info->filename); |
| 114 | return((Image *) NULL); |
| 115 | } |
| 116 | *read_info->magick='\0'; |
| 117 | image=ReadImage(read_info,exception); |
| 118 | (void) fclose(read_info->file); |
| 119 | read_info=DestroyImageInfo(read_info); |
| 120 | if (image == (Image *) NULL) |
| 121 | { |
| 122 | (void) ThrowMagickException(exception,GetMagickModule(),CoderError, |
| 123 | "NoDataReturned","`%s'",image_info->filename); |
| 124 | return((Image *) NULL); |
| 125 | } |
| 126 | return(GetFirstImageInList(image)); |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 131 | % % |
| 132 | % % |
| 133 | % % |
| 134 | % R e g i s t e r F D I m a g e % |
| 135 | % % |
| 136 | % % |
| 137 | % % |
| 138 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 139 | % |
| 140 | % RegisterFDImage() adds attributes for the FD image format to |
| 141 | % the list of supported formats. The attributes include the image format |
| 142 | % tag, a method to read and/or write the format, whether the format |
| 143 | % supports the saving of more than one frame to the same file or blob, |
| 144 | % whether the format supports native in-memory I/O, and a brief |
| 145 | % description of the format. |
| 146 | % |
| 147 | % The format of the RegisterFDImage method is: |
| 148 | % |
| 149 | % size_t RegisterFDImage(void) |
| 150 | % |
| 151 | */ |
| 152 | ModuleExport size_t RegisterFDImage(void) |
| 153 | { |
| 154 | MagickInfo |
| 155 | *entry; |
| 156 | |
dirk | 06b627a | 2015-04-06 18:59:17 +0000 | [diff] [blame] | 157 | entry=AcquireMagickInfo("FD","FD","Read image from a file descriptor"); |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 158 | entry->decoder=(DecodeImageHandler *) ReadFDImage; |
dirk | 08e9a11 | 2015-02-22 01:51:41 +0000 | [diff] [blame] | 159 | entry->flags|=CoderStealthFlag; |
cristy | cf67e65 | 2012-04-03 18:03:01 +0000 | [diff] [blame] | 160 | (void) RegisterMagickInfo(entry); |
| 161 | return(MagickImageCoderSignature); |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 166 | % % |
| 167 | % % |
| 168 | % % |
| 169 | % U n r e g i s t e r F D I m a g e % |
| 170 | % % |
| 171 | % % |
| 172 | % % |
| 173 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 174 | % |
| 175 | % UnregisterFDImage() removes format registrations made by the FD module from |
| 176 | % the list of supported formats. |
| 177 | % |
| 178 | % The format of the UnregisterFDImage method is: |
| 179 | % |
| 180 | % UnregisterFDImage(void) |
| 181 | % |
| 182 | */ |
| 183 | ModuleExport void UnregisterFDImage(void) |
| 184 | { |
| 185 | (void) UnregisterMagickInfo("FD"); |
| 186 | } |