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-rw-r--r--trunk/src/lib/formats/ioprocs.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/trunk/src/lib/formats/ioprocs.h b/trunk/src/lib/formats/ioprocs.h
new file mode 100644
index 00000000000..f6c30866988
--- /dev/null
+++ b/trunk/src/lib/formats/ioprocs.h
@@ -0,0 +1,68 @@
+/*********************************************************************
+
+ ioprocs.h
+
+ File IO abstraction layer
+
+*********************************************************************/
+
+#ifndef IOPROCS_H
+#define IOPROCS_H
+
+#include <stdlib.h>
+
+
+
+/***************************************************************************
+
+ Type definitions
+
+***************************************************************************/
+
+struct io_procs
+{
+ void (*closeproc)(void *file);
+ int (*seekproc)(void *file, INT64 offset, int whence);
+ size_t (*readproc)(void *file, void *buffer, size_t length);
+ size_t (*writeproc)(void *file, const void *buffer, size_t length);
+ UINT64 (*filesizeproc)(void *file);
+};
+
+
+
+struct io_generic
+{
+ const struct io_procs *procs;
+ void *file;
+ UINT8 filler;
+};
+
+
+/***************************************************************************
+
+ Globals
+
+***************************************************************************/
+
+extern const struct io_procs stdio_ioprocs;
+extern const struct io_procs stdio_ioprocs_noclose;
+
+
+
+/***************************************************************************
+
+ Prototypes
+
+***************************************************************************/
+
+
+
+void io_generic_close(struct io_generic *generic);
+void io_generic_read(struct io_generic *generic, void *buffer, UINT64 offset, size_t length);
+void io_generic_write(struct io_generic *generic, const void *buffer, UINT64 offset, size_t length);
+void io_generic_write_filler(struct io_generic *generic, UINT8 filler, UINT64 offset, size_t length);
+UINT64 io_generic_size(struct io_generic *generic);
+
+
+
+#endif /* IOPROCS_H */