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12 <title>ImageMagick: MagickCore, C API for ImageMagick: Read or Write Binary Large OBjects</title>
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162
163<div class="main">
164
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]165<p class="navigation-index">[<a href="#BlobToImage">BlobToImage</a> &bull; <a href="#FileToImage">FileToImage</a> &bull; <a href="#GetBlobProperties">GetBlobProperties</a> &bull; <a href="#ImageToBlob">ImageToBlob</a> &bull; <a href="#ImageToFile">ImageToFile</a> &bull; <a href="#ImagesToBlob">ImagesToBlob</a> &bull; <a href="#InjectImageBlob">InjectImageBlob</a>]</p>
166
167<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
168_8c.html" target="source" name="BlobToImage">BlobToImage</a></h2>
169<div class="doc-section">
170
171<p>BlobToImage() implements direct to memory image formats. It returns the blob as an image.</p></ol>
172
173<p>The format of the BlobToImage method is:</p>
174
175<pre class="code">
176 Image *BlobToImage(const ImageInfo *image_info,const void *blob,
177 const size_t length,ExceptionInfo *exception)
178</pre>
179
180<p>A description of each parameter follows:</p></ol>
181
182<h5>image_info</h5>
183<ol><p>the image info.</p></ol>
184
185<h5>blob</h5>
186<ol><p>the address of a character stream in one of the image formats understood by ImageMagick.</p></ol>
187
188<h5>length</h5>
189<ol><p>This size_t integer reflects the length in bytes of the blob.</p></ol>
190
191<h5>exception</h5>
192<ol><p>return any errors or warnings in this structure.</p></ol>
193
194 </div>
195<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
196_8c.html" target="source" name="FileToImage">FileToImage</a></h2>
197<div class="doc-section">
198
199<p>FileToImage() write the contents of a file to an image.</p></ol>
200
201<p>The format of the FileToImage method is:</p>
202
203<pre class="code">
204 MagickBooleanType FileToImage(Image *,const char *filename)
205</pre>
206
207<p>A description of each parameter follows:</p></ol>
208
209<h5>image</h5>
210<ol><p>the image.</p></ol>
211
212<h5>filename</h5>
213<ol><p>the filename.</p></ol>
214
215 </div>
216<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
217_8c.html" target="source" name="GetBlobProperties">GetBlobProperties</a></h2>
218<div class="doc-section">
219
220<p>GetBlobProperties() returns information about an image blob.</p></ol>
221
222<p>The format of the GetBlobProperties method is:</p>
223
224<pre class="code">
225 const struct stat *GetBlobProperties(const Image *image)
226</pre>
227
228<p>A description of each parameter follows:</p></ol>
229
230<h5>image</h5>
231<ol><p>the image.</p></ol>
232
233 </div>
234<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
235_8c.html" target="source" name="ImageToBlob">ImageToBlob</a></h2>
236<div class="doc-section">
237
238<p>ImageToBlob() implements direct to memory image formats. It returns the image as a blob and its length. The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG, PNG, etc.)</p></ol>
239
240<p>The format of the ImageToBlob method is:</p>
241
242<pre class="code">
243 unsigned char *ImageToBlob(const ImageInfo *image_info,Image *image,
244 size_t *length,ExceptionInfo *exception)
245</pre>
246
247<p>A description of each parameter follows:</p></ol>
248
249<h5>image_info</h5>
250<ol><p>the image info.</p></ol>
251
252<h5>image</h5>
253<ol><p>the image.</p></ol>
254
255<h5>length</h5>
256<ol><p>This pointer to a size_t integer sets the initial length of the blob. On return, it reflects the actual length of the blob.</p></ol>
257
258<h5>exception</h5>
259<ol><p>return any errors or warnings in this structure.</p></ol>
260
261 </div>
262<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
263_8c.html" target="source" name="ImageToFile">ImageToFile</a></h2>
264<div class="doc-section">
265
266<p>ImageToFile() writes an image to a file. It returns MagickFalse if an error occurs otherwise MagickTrue.</p></ol>
267
268<p>The format of the ImageToFile method is:</p>
269
270<pre class="code">
271 MagickBooleanType ImageToFile(Image *image,char *filename,
272 ExceptionInfo *exception)
273</pre>
274
275<p>A description of each parameter follows:</p></ol>
276
277<h5>image</h5>
278<ol><p>the image.</p></ol>
279
280<h5>filename</h5>
281<ol><p>Write the image to this file.</p></ol>
282
283<h5>exception</h5>
284<ol><p>return any errors or warnings in this structure.</p></ol>
285
286 </div>
287<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
288_8c.html" target="source" name="ImagesToBlob">ImagesToBlob</a></h2>
289<div class="doc-section">
290
291<p>ImagesToBlob() implements direct to memory image formats. It returns the image sequence as a blob and its length. The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG, PNG, etc.)</p></ol>
292
293<p>Note, some image formats do not permit multiple images to the same image stream (e.g. JPEG). in this instance, just the first image of the sequence is returned as a blob.</p></ol>
294
295<p>The format of the ImagesToBlob method is:</p>
296
297<pre class="code">
298 unsigned char *ImagesToBlob(const ImageInfo *image_info,Image *images,
299 size_t *length,ExceptionInfo *exception)
300</pre>
301
302<p>A description of each parameter follows:</p></ol>
303
304<h5>image_info</h5>
305<ol><p>the image info.</p></ol>
306
307<h5>images</h5>
308<ol><p>the image list.</p></ol>
309
310<h5>length</h5>
311<ol><p>This pointer to a size_t integer sets the initial length of the blob. On return, it reflects the actual length of the blob.</p></ol>
312
313<h5>exception</h5>
314<ol><p>return any errors or warnings in this structure.</p></ol>
315
316 </div>
317<h2><a href="http://www.imagemagick.org/api/MagickCore/blob
318_8c.html" target="source" name="InjectImageBlob">InjectImageBlob</a></h2>
319<div class="doc-section">
320
321<p>InjectImageBlob() injects the image with a copy of itself in the specified format (e.g. inject JPEG into a PDF image).</p></ol>
322
323<p>The format of the InjectImageBlob method is:</p>
324
325<pre class="code">
326 MagickBooleanType InjectImageBlob(const ImageInfo *image_info,
327 Image *image,Image *inject_image,const char *format,
328 ExceptionInfo *exception)
329</pre>
330
331<p>A description of each parameter follows:</p></ol>
332
333<h5>image_info</h5>
334<ol><p>the image info..</p></ol>
335
336<h5>image</h5>
337<ol><p>the image.</p></ol>
338
339<h5>inject_image</h5>
340<ol><p>inject into the image stream.</p></ol>
341
342<h5>format</h5>
343<ol><p>the image format.</p></ol>
344
345<h5>exception</h5>
346<ol><p>return any errors or warnings in this structure.</p></ol>
347
348 </div>
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