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src/Source/FreeImage/MultiPage.cpp  view on Meta::CPAN

						// set up the cache
						std::auto_ptr<CacheFile> cache_file (new CacheFile("", TRUE));
						
						if (cache_file->open()) {
							header->m_cachefile = cache_file.release();
						}
					}
					tmp_io.release();
					header.release();
					return bitmap.release();
				}
			}
		}
	} catch (std::bad_alloc &) {
		/** @todo report error */
	}
	return NULL;
}

BOOL DLL_CALLCONV
FreeImage_SaveMultiBitmapToHandle(FREE_IMAGE_FORMAT fif, FIMULTIBITMAP *bitmap, FreeImageIO *io, fi_handle handle, int flags) {
	if(!bitmap || !bitmap->data || !io || !handle) {
		return FALSE;
	}

	BOOL success = TRUE;

	// retrieve the plugin list to find the node belonging to this plugin
	PluginList *list = FreeImage_GetPluginList();
	
	if (list) {
		PluginNode *node = list->FindNodeFromFIF(fif);

		if(node) {
			MULTIBITMAPHEADER *header = FreeImage_GetMultiBitmapHeader(bitmap);
			
			// dst data
			void *data = FreeImage_Open(node, io, handle, FALSE);
			// src data
			void *data_read = NULL;
			
			if(header->handle) {
				// open src
				header->io->seek_proc(header->handle, 0, SEEK_SET);
				data_read = FreeImage_Open(header->node, header->io, header->handle, TRUE);
			}
			
			// write all the pages to the file using handle and io
			
			int count = 0;
			
			for (BlockListIterator i = header->m_blocks.begin(); i != header->m_blocks.end(); i++) {
				if (success) {
					switch((*i)->m_type) {
						case BLOCK_CONTINUEUS:
						{
							BlockContinueus *block = (BlockContinueus *)(*i);
							
							for (int j = block->m_start; j <= block->m_end; j++) {

								// load the original source data
								FIBITMAP *dib = header->node->m_plugin->load_proc(header->io, header->handle, j, header->load_flags, data_read);
								
								// save the data
								success = node->m_plugin->save_proc(io, dib, handle, count, flags, data);
								count++;
								
								FreeImage_Unload(dib);
							}
							
							break;
						}
						
						case BLOCK_REFERENCE:
						{
							BlockReference *ref = (BlockReference *)(*i);
							
							// read the compressed data
							
							BYTE *compressed_data = (BYTE*)malloc(ref->m_size * sizeof(BYTE));
							
							header->m_cachefile->readFile((BYTE *)compressed_data, ref->m_reference, ref->m_size);
							
							// uncompress the data
							
							FIMEMORY *hmem = FreeImage_OpenMemory(compressed_data, ref->m_size);
							FIBITMAP *dib = FreeImage_LoadFromMemory(header->cache_fif, hmem, 0);
							FreeImage_CloseMemory(hmem);
							
							// get rid of the buffer
							free(compressed_data);
							
							// save the data
							
							success = node->m_plugin->save_proc(io, dib, handle, count, flags, data);
							count++;
							
							// unload the dib

							FreeImage_Unload(dib);

							break;
						}
					}
				} else {
					break;
				}
			}
			
			// close the files
			
			FreeImage_Close(header->node, header->io, header->handle, data_read);

			FreeImage_Close(node, io, handle, data); 
			
			return success;
		}
	}

	return FALSE;
}