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+// ==========================================================
+// FreeImage 3 Test Script
+//
+// Design and implementation by
+// - Hervé Drolon (drolon@infonie.fr)
+//
+// This file is part of FreeImage 3
+//
+// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
+// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
+// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
+// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
+// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
+// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
+// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
+// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+// THIS DISCLAIMER.
+//
+// Use at your own risk!
+// ==========================================================
+
+
+#include "TestSuite.h"
+
+void testSaveMemIO(const char *lpszPathName) {
+ FIMEMORY *hmem = NULL;
+
+ // load a regular file
+ FREE_IMAGE_FORMAT fif = FreeImage_GetFileType(lpszPathName);
+ FIBITMAP *dib = FreeImage_Load(fif, lpszPathName, 0);
+
+ // open a memory handle
+ hmem = FreeImage_OpenMemory();
+
+ // save the file to memory
+ FreeImage_SaveToMemory(fif, dib, hmem, 0);
+
+ // at this point, hmem contains the entire PNG data in memory.
+ // the amount of space used by the memory is equal to file_size
+ long file_size = FreeImage_TellMemory(hmem);
+ printf("File size : %ld\n", file_size);
+
+
+ // its easy load an image from memory as well
+
+ // seek to the start of the memory stream
+ FreeImage_SeekMemory(hmem, 0L, SEEK_SET);
+
+ // get the file type
+ FREE_IMAGE_FORMAT mem_fif = FreeImage_GetFileTypeFromMemory(hmem, 0);
+
+ // load an image from the memory handle
+ FIBITMAP *check = FreeImage_LoadFromMemory(mem_fif, hmem, 0);
+
+ // save as a regular file
+ FreeImage_Save(FIF_PNG, check, "dump.png", PNG_DEFAULT);
+
+ // make sure to free the data since FreeImage_SaveToMemory
+ // will cause it to be malloc'd
+ FreeImage_CloseMemory(hmem);
+
+ FreeImage_Unload(check);
+ FreeImage_Unload(dib);
+}
+
+ //you could also have image data in memory via some other method, and just set
+ //fmh.data to point to it, and set both fmh.datalen and fmh.filelen to the
+ //size of that data, then FreeImage_LoadFromMemory could load the image from that memory
+
+void testLoadMemIO(const char *lpszPathName) {
+ struct stat buf;
+ int result;
+
+ // get data associated with lpszPathName
+ result = stat(lpszPathName, &buf);
+ if(result == 0) {
+ // allocate a memory buffer and load temporary data
+ BYTE *mem_buffer = (BYTE*)malloc(buf.st_size * sizeof(BYTE));
+ if(mem_buffer) {
+ FILE *stream = fopen(lpszPathName, "rb");
+ if(stream) {
+ fread(mem_buffer, sizeof(BYTE), buf.st_size, stream);
+ fclose(stream);
+
+ // attach the binary data to a memory stream
+ FIMEMORY *hmem = FreeImage_OpenMemory(mem_buffer, buf.st_size);
+
+ // get the file type
+ FREE_IMAGE_FORMAT fif = FreeImage_GetFileTypeFromMemory(hmem, 0);
+
+ // load an image from the memory stream
+ FIBITMAP *check = FreeImage_LoadFromMemory(fif, hmem, PNG_DEFAULT);
+
+ // save as a regular file
+ FreeImage_Save(FIF_PNG, check, "blob.png", PNG_DEFAULT);
+ FreeImage_Unload(check);
+
+ // close the stream
+ FreeImage_CloseMemory(hmem);
+
+ }
+ }
+ // user is responsible for freeing the data
+ free(mem_buffer);
+ }
+}
+
+void testAcquireMemIO(const char *lpszPathName) {
+ FIMEMORY *hmem = NULL;
+
+ // load a regular file
+ FREE_IMAGE_FORMAT fif = FreeImage_GetFileType(lpszPathName);
+ FIBITMAP *dib = FreeImage_Load(fif, lpszPathName, 0);
+
+ // open and allocate a memory stream
+ hmem = FreeImage_OpenMemory();
+
+ // save the file to memory
+ FreeImage_SaveToMemory(FIF_PNG, dib, hmem, PNG_DEFAULT);
+
+ FreeImage_Unload(dib);
+
+ // get the buffer from the memory stream
+ BYTE *mem_buffer = NULL;
+ DWORD size_in_bytes = 0;
+
+ FreeImage_AcquireMemory(hmem, &mem_buffer, &size_in_bytes);
+
+ // save the buffer in a file stream
+ FILE *stream = fopen("buffer.png", "wb");
+ if(stream) {
+ fwrite(mem_buffer, sizeof(BYTE), size_in_bytes, stream);
+ fclose(stream);
+ }
+
+ // close and free the memory stream
+ FreeImage_CloseMemory(hmem);
+
+}
+
+void testMemIO(const char *lpszPathName) {
+ testSaveMemIO(lpszPathName);
+ testLoadMemIO(lpszPathName);
+ testAcquireMemIO(lpszPathName);
+}
+