1 files changed, 97 insertions, 0 deletions
diff --git a/im/include/im_format.h b/im/include/im_format.h
new file mode 100755
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--- /dev/null
+++ b/im/include/im_format.h
@@ -0,0 +1,97 @@
+/** \file
+ * \brief File Format Access
+ *
+ * See Copyright Notice in im_lib.h
+ */
+
+#include "im_file.h"
+#include "im_attrib.h"
+
+#ifndef __IM_FORMAT_H
+#define __IM_FORMAT_H
+
+
+class imFormat;
+
+/** \brief Image File Format Virtual Class (SDK Use Only) 
+ * 
+ * \par
+ * Virtual Base class for file formats. All file formats inherit from this class.
+ * \ingroup filesdk */
+class imFileFormatBase: public _imFile
+{
+public:
+  const imFormat* iformat;
+
+  imFileFormatBase(const imFormat* _iformat): iformat(_iformat) {}
+  virtual ~imFileFormatBase() {}
+
+  imAttribTable* AttribTable() {return (imAttribTable*)this->attrib_table;}
+
+  /* Pure Virtual Methods. Every driver must implement all the following methods. */
+
+  virtual int Open(const char* file_name) = 0; // Must initialize compression and image_count
+  virtual int New(const char* file_name) = 0;
+  virtual void Close() = 0;
+  virtual void* Handle(int index) = 0;
+  virtual int ReadImageInfo(int index) = 0;    // Should update compression
+  virtual int ReadImageData(void* data) = 0;
+  virtual int WriteImageInfo() = 0;            // Should update compression
+  virtual int WriteImageData(void* data) = 0;  // Must update image_count
+};
+
+/** \brief Image File Format Descriptor (SDK Use Only) 
+ * 
+ * \par
+ * All file formats must define these informations. They are stored by \ref imFormatRegister.
+ * \ingroup filesdk */
+class imFormat
+{
+public:
+  const char* format; 
+  const char* desc;
+  const char* ext;
+  const char** comp;
+  int comp_count, 
+      can_sequence;
+
+  virtual imFileFormatBase* Create() const = 0;
+  virtual int CanWrite(const char* compression, int color_mode, int data_type) const = 0;
+
+  imFormat(const char* _format, const char* _desc, const char* _ext, 
+           const char** _comp, int _comp_count, int _can_sequence)
+    :format(_format), desc(_desc), ext(_ext), comp(_comp), 
+     comp_count(_comp_count), can_sequence(_can_sequence)
+    {} 
+  virtual ~imFormat() {}
+};
+
+extern "C"
+{
+
+/* Internal Use only */
+
+/* Opens a file with the respective format driver 
+ * Uses the file extension to speed up the search for the format driver.
+ * Used by "im_file.cpp" only. */
+imFileFormatBase* imFileFormatBaseOpen(const char* file_name, int *error);
+
+/* Opens a file with the given format
+ * Used by "im_file.cpp" only. */
+imFileFormatBase* imFileFormatBaseOpenAs(const char* file_name, const char* format, int *error);
+
+/* Creates a file using the given format driver.
+ * Used by "im_file.cpp" only. */
+imFileFormatBase* imFileFormatBaseNew(const char* file_name, const char* format, int *error);
+
+
+/* File Format SDK */
+
+/** Register a format driver.
+ * \ingroup filesdk */
+void imFormatRegister(imFormat* iformat);
+
+
+}
+
+#endif