1 /* 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3 % % 4 % % 5 % % 6 % M M AAA TTTTT TTTTT EEEEE % 7 % MM MM A A T T E % 8 % M M M AAAAA T T EEE % 9 % M M A A T T E % 10 % M M A A T T EEEEE % 11 % % 12 % % 13 % Write Matte Channel To MIFF File. % 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 /* 41 Include declarations. 42 */ 43 #include "MagickCore/studio.h" 44 #include "MagickCore/attribute.h" 45 #include "MagickCore/blob.h" 46 #include "MagickCore/blob-private.h" 47 #include "MagickCore/cache.h" 48 #include "MagickCore/constitute.h" 49 #include "MagickCore/exception.h" 50 #include "MagickCore/exception-private.h" 51 #include "MagickCore/image-private.h" 52 #include "MagickCore/list.h" 53 #include "MagickCore/magick.h" 54 #include "MagickCore/memory_.h" 55 #include "MagickCore/monitor.h" 56 #include "MagickCore/monitor-private.h" 57 #include "MagickCore/pixel-accessor.h" 58 #include "MagickCore/quantum-private.h" 59 #include "MagickCore/static.h" 60 #include "MagickCore/string_.h" 61 #include "MagickCore/module.h" 62 63 /* 65 Forward declarations. 66 */ 67 static MagickBooleanType 68 WriteMATTEImage(const ImageInfo *,Image *,ExceptionInfo *); 69 70 /* 72 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 73 % % 74 % % 75 % % 76 % R e g i s t e r M A T T E I m a g e % 77 % % 78 % % 79 % % 80 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 81 % 82 % RegisterMATTEImage() adds attributes for the MATTE image format to 83 % the list of supported formats. The attributes include the image format 84 % tag, a method to read and/or write the format, whether the format 85 % supports the saving of more than one frame to the same file or blob, 86 % whether the format supports native in-memory I/O, and a brief 87 % description of the format. 88 % 89 % The format of the RegisterMATTEImage method is: 90 % 91 % size_t RegisterMATTEImage(void) 92 % 93 */ 94 ModuleExport size_t RegisterMATTEImage(void) 95 { 96 MagickInfo 97 *entry; 98 99 entry=AcquireMagickInfo("MATTE","MATTE","MATTE format"); 100 entry->encoder=(EncodeImageHandler *) WriteMATTEImage; 101 entry->format_type=ExplicitFormatType; 102 (void) RegisterMagickInfo(entry); 103 return(MagickImageCoderSignature); 104 } 105 106 /* 108 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 109 % % 110 % % 111 % % 112 % U n r e g i s t e r M A T T E I m a g e % 113 % % 114 % % 115 % % 116 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 117 % 118 % UnregisterMATTEImage() removes format registrations made by the 119 % MATTE module from the list of supported formats. 120 % 121 % The format of the UnregisterMATTEImage method is: 122 % 123 % UnregisterMATTEImage(void) 124 % 125 */ 126 ModuleExport void UnregisterMATTEImage(void) 127 { 128 (void) UnregisterMagickInfo("MATTE"); 129 } 130 131 /* 133 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 134 % % 135 % % 136 % % 137 % W r i t e M A T T E I m a g e % 138 % % 139 % % 140 % % 141 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 142 % 143 % WriteMATTEImage() writes an image of matte bytes to a file. It consists of 144 % data from the matte component of the image [0..255]. 145 % 146 % The format of the WriteMATTEImage method is: 147 % 148 % MagickBooleanType WriteMATTEImage(const ImageInfo *image_info, 149 % Image *image,ExceptionInfo *exception) 150 % 151 % A description of each parameter follows. 152 % 153 % o image_info: the image info. 154 % 155 % o image: The image. 156 % 157 % o exception: return any errors or warnings in this structure. 158 % 159 */ 160 static MagickBooleanType WriteMATTEImage(const ImageInfo *image_info, 161 Image *image,ExceptionInfo *exception) 162 { 163 Image 164 *matte_image; 165 166 ImageInfo 167 *write_info; 168 169 MagickBooleanType 170 status; 171 172 register const Quantum 173 *p; 174 175 register ssize_t 176 x; 177 178 register Quantum 179 *q; 180 181 ssize_t 182 y; 183 184 if (image->alpha_trait == UndefinedPixelTrait) 185 ThrowWriterException(CoderError,"ImageDoesNotHaveAnAlphaChannel"); 186 matte_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception); 187 if (matte_image == (Image *) NULL) 188 return(MagickFalse); 189 (void) SetImageType(matte_image,TrueColorAlphaType,exception); 190 matte_image->alpha_trait=UndefinedPixelTrait; 191 /* 192 Convert image to matte pixels. 193 */ 194 for (y=0; y < (ssize_t) image->rows; y++) 195 { 196 p=GetVirtualPixels(image,0,y,image->columns,1,exception); 197 q=QueueAuthenticPixels(matte_image,0,y,matte_image->columns,1,exception); 198 if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL)) 199 break; 200 for (x=0; x < (ssize_t) image->columns; x++) 201 { 202 SetPixelRed(matte_image,GetPixelAlpha(image,p),q); 203 SetPixelGreen(matte_image,GetPixelAlpha(image,p),q); 204 SetPixelBlue(matte_image,GetPixelAlpha(image,p),q); 205 SetPixelAlpha(matte_image,OpaqueAlpha,q); 206 p+=GetPixelChannels(image); 207 q+=GetPixelChannels(matte_image); 208 } 209 if (SyncAuthenticPixels(matte_image,exception) == MagickFalse) 210 break; 211 status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, 212 image->rows); 213 if (status == MagickFalse) 214 break; 215 } 216 write_info=CloneImageInfo(image_info); 217 if ((*write_info->magick == '\0') || 218 (LocaleCompare(write_info->magick,"MATTE") == 0)) 219 (void) FormatLocaleString(matte_image->filename,MagickPathExtent, 220 "MIFF:%s",image->filename); 221 status=WriteImage(write_info,matte_image,exception); 222 write_info=DestroyImageInfo(write_info); 223 matte_image=DestroyImage(matte_image); 224 return(status); 225 } 226
