Added my two new compressor classes - one based on Miniz and the other based on RLE.

library/polyvoxcore/source/MinizCompressor.cpp

@@ -0,0 +1,45 @@
+#include "PolyVoxCore/MinizCompressor.h"
+
+// Diable things we don't need, and in particular the zlib compatible names which
+// would cause conflicts if a user application is using both PolyVox and zlib.
+#define MINIZ_NO_STDIO
+#define MINIZ_NO_ARCHIVE_APIS
+#define MINIZ_NO_TIME
+//#define MINIZ_NO_ZLIB_APIS
+#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES
+//#define MINIZ_NO_MALLOC
+
+// For some unknown reason the miniz library is supplied only as a 
+// single .c file without a header. Apparently the only way to use 
+// it is then to #include it directly which is what the examples do.
+#include "PolyVoxCore/Impl/miniz.c"
+
+MinizCompressor::MinizCompressor()
+{
+}
+
+MinizCompressor::~MinizCompressor()
+{
+}
+
+uint32_t MinizCompressor::compress(void* pSrcData, uint32_t uSrcLength, void* pDstData, uint32_t uDstLength)
+{
+	mz_ulong ulDstLength = uDstLength;
+
+	// Do the compression
+	int result = mz_compress((unsigned char*)pDstData, &ulDstLength, (const unsigned char*) pSrcData, uSrcLength);
+	assert(result == MZ_OK);
+
+	// Return the number of bytes written to the output.
+	return ulDstLength;
+}
+
+uint32_t MinizCompressor::decompress(void* pSrcData, uint32_t uSrcLength, void* pDstData, uint32_t uDstLength)
+{
+	mz_ulong ulDstLength = uDstLength;
+
+	int result = mz_uncompress((unsigned char*) pDstData, &ulDstLength, (const unsigned char*) pSrcData, uSrcLength);
+	assert(result == MZ_OK);
+
+	return ulDstLength;
+}