1 files changed, 127 insertions, 0 deletions
diff --git a/indexer_JPIP/cio.c b/indexer_JPIP/cio.c
new file mode 100644
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+++ b/indexer_JPIP/cio.c
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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2003, Yannick Verschueren
+ * Copyright (c) 2003,  Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cio.h"
+#include <setjmp.h>
+
+static unsigned char *cio_start, *cio_end, *cio_bp;
+
+extern jmp_buf j2k_error;
+
+/// <summary>
+/// Number of bytes written.
+/// </summary>
+int cio_numbytes() {
+    return cio_bp-cio_start;
+}
+
+/// <summary>
+/// Get position in byte stream.
+/// </summary>
+int cio_tell() {
+    return cio_bp-cio_start;
+}
+
+/// <summary>
+/// Set position in byte stream.
+/// </summary>
+void cio_seek(int pos) {
+    cio_bp=cio_start+pos;
+}
+
+/// <summary>
+/// Number of bytes left before the end of the stream.
+/// </summary>
+int cio_numbytesleft() {
+    return cio_end-cio_bp;
+}
+
+/// <summary>
+/// Get pointer to the current position in the stream.
+/// </summary>
+unsigned char *cio_getbp() {
+    return cio_bp;
+}
+
+/// <summary>
+/// Initialize byte IO.
+/// </summary>
+void cio_init(unsigned char *bp, int len) {
+    cio_start=bp;
+    cio_end=bp+len;
+    cio_bp=bp;
+}
+
+/// <summary>
+/// Write a byte.
+/// </summary>
+void cio_byteout(unsigned char v) {
+  if (cio_bp>=cio_end) longjmp(j2k_error, 1);
+  *cio_bp++=v;
+    
+}
+
+/// <summary>
+/// Read a byte.
+/// </summary>
+unsigned char cio_bytein() {
+    if (cio_bp>=cio_end) longjmp(j2k_error, 1);
+    return *cio_bp++;
+}
+
+/// <summary>
+/// Write a byte.
+/// </summary>
+//void cio_write(unsigned int v, int n) {
+void cio_write(long long v, int n) {
+    int i;
+    for (i=n-1; i>=0; i--) 
+      {
+	cio_byteout((unsigned char)((v>>(i<<3))&0xff));
+      }
+}
+
+/// <summary>
+/// Read some bytes.
+/// </summary>
+unsigned int cio_read(int n) {
+    int i;
+    unsigned int v;
+    v=0;
+    for (i=n-1; i>=0; i--) {
+        v+=cio_bytein()<<(i<<3);
+    }
+    return v;
+}
+
+/// <summary>
+/// Write some bytes.
+/// </summary>
+void cio_skip(int n) {
+    cio_bp+=n;
+}