From d54925f777745b0f9389dfed90136088d84dc38b Mon Sep 17 00:00:00 2001
From: Francois-Olivier Devaux <fodevaux@users.noreply.github.com>
Date: Mon, 23 May 2005 15:26:29 +0000
Subject: [PATCH] 2 functions were added, to fasten buffer transfers: void
 cio_read_to_buf(unsigned char* buf, int n) void cio_write_from_buf(unsigned
 char* buf, int n) Code written by Glenn Pearson

---
 libopenjpeg/cio.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/libopenjpeg/cio.c b/libopenjpeg/cio.c
index 7aecffca..631e6ae6 100644
--- a/libopenjpeg/cio.c
+++ b/libopenjpeg/cio.c
@@ -26,6 +26,7 @@
 
 #include "cio.h"
 #include <setjmp.h>
+#include <memory.h>
 
 static unsigned char *cio_start;	/* pointer to the start of the stream */
 static unsigned char *cio_end;	/* pointer to the end of the stream */
@@ -150,3 +151,29 @@ void cio_skip(int n)
 {
   cio_bp += n;
 }
+
+/* 
+ * Read n bytes, copy to buffer
+ *
+ * n : number of bytes to transfer
+ */
+void cio_read_to_buf(unsigned char* dest_buf, int n)/* Glenn adds */
+{
+  if (cio_bp + n > cio_end)
+    longjmp(j2k_error, 1);
+  memcpy(cio_bp, dest_buf, n);
+  cio_bp += n;
+}
+
+/* 
+ * Write n bytes, copy from buffer
+ *
+ * n : number of bytes to transfer
+ */
+void cio_write_from_buf(unsigned char* src_buf, int n)/* Glenn adds */
+{
+  if (cio_bp + n > cio_end)
+    longjmp(j2k_error, 1);
+  memcpy(src_buf, cio_bp, n);
+  cio_bp += n;
+}
\ No newline at end of file