/* compress.c -- compress a memory buffer
- * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * Copyright (C) 1995-2003 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
-/* @(#) $Id$ */
-#include "../zlib/zlib.h"
+#define ZLIB_INTERNAL
+#include "zlib.h"
/* ===========================================================================
Compresses the source buffer into the destination buffer. The level
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-int ZEXPORT compress2 (Bytef* dest, uLongf* destLen, const Bytef* source, uLong sourceLen, int level)
-#else
int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
int level;
-#endif
{
z_stream stream;
int err;
/* ===========================================================================
*/
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-int ZEXPORT compress (Bytef* dest, uLongf* destLen, const Bytef* source, uLong sourceLen)
-#else
int ZEXPORT compress (dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
-#endif
{
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}
+
+/* ===========================================================================
+ If the default memLevel or windowBits for deflateInit() is changed, then
+ this function needs to be updated.
+ */
+uLong ZEXPORT compressBound (sourceLen)
+ uLong sourceLen;
+{
+ return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11;
+}