Upgrade LZ4 to latest version.

1 files changed, 326 insertions, 205 deletions

diff --git a/ext/lz4/lz4.h b/ext/lz4/lz4.h
index 9ef58862..f8327f0c 100644
--- a/ext/lz4/lz4.h
+++ b/ext/lz4/lz4.h
@@ -1,205 +1,326 @@
-/*

-   LZ4 - Fast LZ compression algorithm

-   Header File

-   Copyright (C) 2011-2013, Yann Collet.

-   BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)

-

-   Redistribution and use in source and binary forms, with or without

-   modification, are permitted provided that the following conditions are

-   met:

-

-       * Redistributions of source code must retain the above copyright

-   notice, this list of conditions and the following disclaimer.

-       * 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.

-

-   You can contact the author at :

-   - LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html

-   - LZ4 source repository : http://code.google.com/p/lz4/

-*/

-#pragma once

-

-#if defined (__cplusplus)

-extern "C" {

-#endif

-

-

-//**************************************

-// Compiler Options

-//**************************************

-#if defined(_MSC_VER) && !defined(__cplusplus)   // Visual Studio

-#  define inline __inline           // Visual C is not C99, but supports some kind of inline

-#endif

-

-

-//****************************

-// Simple Functions

-//****************************

-

-int LZ4_compress        (const char* source, char* dest, int inputSize);

-int LZ4_decompress_safe (const char* source, char* dest, int inputSize, int maxOutputSize);

-

-/*

-LZ4_compress() :

-    Compresses 'inputSize' bytes from 'source' into 'dest'.

-    Destination buffer must be already allocated,

-    and must be sized to handle worst cases situations (input data not compressible)

-    Worst case size evaluation is provided by function LZ4_compressBound()

-    inputSize : Max supported value is LZ4_MAX_INPUT_VALUE

-    return : the number of bytes written in buffer dest

-             or 0 if the compression fails

-

-LZ4_decompress_safe() :

-    maxOutputSize : is the size of the destination buffer (which must be already allocated)

-    return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)

-             If the source stream is detected malformed, the function will stop decoding and return a negative result.

-             This function is protected against buffer overflow exploits (never writes outside of output buffer, and never reads outside of input buffer). Therefore, it is protected against malicious data packets

-*/

-

-

-//****************************

-// Advanced Functions

-//****************************

-#define LZ4_MAX_INPUT_SIZE        0x7E000000   // 2 113 929 216 bytes

-#define LZ4_COMPRESSBOUND(isize)  ((unsigned int)(isize) > (unsigned int)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)

-static inline int LZ4_compressBound(int isize)  { return LZ4_COMPRESSBOUND(isize); }

-

-/*

-LZ4_compressBound() :

-    Provides the maximum size that LZ4 may output in a "worst case" scenario (input data not compressible)

-    primarily useful for memory allocation of output buffer.

-    inline function is recommended for the general case,

-    macro is also provided when result needs to be evaluated at compilation (such as stack memory allocation).

-

-    isize  : is the input size. Max supported value is LZ4_MAX_INPUT_SIZE

-    return : maximum output size in a "worst case" scenario

-             or 0, if input size is too large ( > LZ4_MAX_INPUT_SIZE)

-*/

-

-

-int LZ4_compress_limitedOutput (const char* source, char* dest, int inputSize, int maxOutputSize);

-

-/*

-LZ4_compress_limitedOutput() :

-    Compress 'inputSize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.

-    If it cannot achieve it, compression will stop, and result of the function will be zero.

-    This function never writes outside of provided output buffer.

-

-    inputSize  : Max supported value is LZ4_MAX_INPUT_VALUE

-    maxOutputSize : is the size of the destination buffer (which must be already allocated)

-    return : the number of bytes written in buffer 'dest'

-             or 0 if the compression fails

-*/

-

-

-int LZ4_decompress_fast (const char* source, char* dest, int outputSize);

-

-/*

-LZ4_decompress_fast() :

-    outputSize : is the original (uncompressed) size

-    return : the number of bytes read from the source buffer (in other words, the compressed size)

-             If the source stream is malformed, the function will stop decoding and return a negative result.

-    note : This function is a bit faster than LZ4_decompress_safe()

-           This function never writes outside of output buffers, but may read beyond input buffer in case of malicious data packet.

-           Use this function preferably into a trusted environment (data to decode comes from a trusted source).

-           Destination buffer must be already allocated. Its size must be a minimum of 'outputSize' bytes.

-*/

-

-int LZ4_decompress_safe_partial (const char* source, char* dest, int inputSize, int targetOutputSize, int maxOutputSize);

-

-/*

-LZ4_decompress_safe_partial() :

-    This function decompress a compressed block of size 'inputSize' at position 'source'

-    into output buffer 'dest' of size 'maxOutputSize'.

-    The function tries to stop decompressing operation as soon as 'targetOutputSize' has been reached,

-    reducing decompression time.

-    return : the number of bytes decoded in the destination buffer (necessarily <= maxOutputSize)

-       Note : this number can be < 'targetOutputSize' should the compressed block to decode be smaller.

-             Always control how many bytes were decoded.

-             If the source stream is detected malformed, the function will stop decoding and return a negative result.

-             This function never writes outside of output buffer, and never reads outside of input buffer. It is therefore protected against malicious data packets

-*/

-

-

-//****************************

-// Stream Functions

-//****************************

-

-void* LZ4_create (const char* inputBuffer);

-int   LZ4_compress_continue (void* LZ4_Data, const char* source, char* dest, int inputSize);

-int   LZ4_compress_limitedOutput_continue (void* LZ4_Data, const char* source, char* dest, int inputSize, int maxOutputSize);

-char* LZ4_slideInputBuffer (void* LZ4_Data);

-int   LZ4_free (void* LZ4_Data);

-

-/* 

-These functions allow the compression of dependent blocks, where each block benefits from prior 64 KB within preceding blocks.

-In order to achieve this, it is necessary to start creating the LZ4 Data Structure, thanks to the function :

-

-void* LZ4_create (const char* inputBuffer);

-The result of the function is the (void*) pointer on the LZ4 Data Structure.

-This pointer will be needed in all other functions.

-If the pointer returned is NULL, then the allocation has failed, and compression must be aborted.

-The only parameter 'const char* inputBuffer' must, obviously, point at the beginning of input buffer.

-The input buffer must be already allocated, and size at least 192KB.

-'inputBuffer' will also be the 'const char* source' of the first block.

-

-All blocks are expected to lay next to each other within the input buffer, starting from 'inputBuffer'.

-To compress each block, use either LZ4_compress_continue() or LZ4_compress_limitedOutput_continue().

-Their behavior are identical to LZ4_compress() or LZ4_compress_limitedOutput(), 

-but require the LZ4 Data Structure as their first argument, and check that each block starts right after the previous one.

-If next block does not begin immediately after the previous one, the compression will fail (return 0).

-

-When it's no longer possible to lay the next block after the previous one (not enough space left into input buffer), a call to : 

-char* LZ4_slideInputBuffer(void* LZ4_Data);

-must be performed. It will typically copy the latest 64KB of input at the beginning of input buffer.

-Note that, for this function to work properly, minimum size of an input buffer must be 192KB.

-==> The memory position where the next input data block must start is provided as the result of the function.

-

-Compression can then resume, using LZ4_compress_continue() or LZ4_compress_limitedOutput_continue(), as usual.

-

-When compression is completed, a call to LZ4_free() will release the memory used by the LZ4 Data Structure.

-*/

-

-

-int LZ4_decompress_safe_withPrefix64k (const char* source, char* dest, int inputSize, int maxOutputSize);

-int LZ4_decompress_fast_withPrefix64k (const char* source, char* dest, int outputSize);

-

-/*

-*_withPrefix64k() :

-    These decoding functions work the same as their "normal name" versions,

-    but can use up to 64KB of data in front of 'char* dest'.

-    These functions are necessary to decode inter-dependant blocks.

-*/

-

-

-//****************************

-// Obsolete Functions

-//****************************

-

-static inline int LZ4_uncompress (const char* source, char* dest, int outputSize) { return LZ4_decompress_fast(source, dest, outputSize); }

-static inline int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize) { return LZ4_decompress_safe(source, dest, isize, maxOutputSize); }

-

-/*

-These functions are deprecated and should no longer be used.

-They are provided here for compatibility with existing user programs.

-*/

-

-

-

-#if defined (__cplusplus)

-}

-#endif

+/*
+   LZ4 - Fast LZ compression algorithm
+   Header File
+   Copyright (C) 2011-2014, Yann Collet.
+   BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * 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.
+
+   You can contact the author at :
+   - LZ4 source repository : http://code.google.com/p/lz4/
+   - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
+*/
+#pragma once
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+/**************************************
+   Version
+**************************************/
+#define LZ4_VERSION_MAJOR    1    /* for major interface/format changes  */
+#define LZ4_VERSION_MINOR    3    /* for minor interface/format changes  */
+#define LZ4_VERSION_RELEASE  0    /* for tweaks, bug-fixes, or development */
+#define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
+int LZ4_versionNumber (void);
+
+/**************************************
+   Tuning parameter
+**************************************/
+/*
+ * LZ4_MEMORY_USAGE :
+ * Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
+ * Increasing memory usage improves compression ratio
+ * Reduced memory usage can improve speed, due to cache effect
+ * Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
+ */
+#define LZ4_MEMORY_USAGE 14
+
+
+/**************************************
+   Simple Functions
+**************************************/
+
+int LZ4_compress        (const char* source, char* dest, int inputSize);
+int LZ4_decompress_safe (const char* source, char* dest, int compressedSize, int maxDecompressedSize);
+
+/*
+LZ4_compress() :
+    Compresses 'inputSize' bytes from 'source' into 'dest'.
+    Destination buffer must be already allocated,
+    and must be sized to handle worst cases situations (input data not compressible)
+    Worst case size evaluation is provided by function LZ4_compressBound()
+    inputSize : Max supported value is LZ4_MAX_INPUT_SIZE
+    return : the number of bytes written in buffer dest
+             or 0 if the compression fails
+
+LZ4_decompress_safe() :
+    compressedSize : is obviously the source size
+    maxDecompressedSize : is the size of the destination buffer, which must be already allocated.
+    return : the number of bytes decompressed into the destination buffer (necessarily <= maxDecompressedSize)
+             If the destination buffer is not large enough, decoding will stop and output an error code (<0).
+             If the source stream is detected malformed, the function will stop decoding and return a negative result.
+             This function is protected against buffer overflow exploits :
+             it never writes outside of output buffer, and never reads outside of input buffer.
+             Therefore, it is protected against malicious data packets.
+*/
+
+
+/*
+Note :
+    Should you prefer to explicitly allocate compression-table memory using your own allocation method,
+    use the streaming functions provided below, simply reset the memory area between each call to LZ4_compress_continue()
+*/
+
+
+/**************************************
+   Advanced Functions
+**************************************/
+#define LZ4_MAX_INPUT_SIZE        0x7E000000   /* 2 113 929 216 bytes */
+#define LZ4_COMPRESSBOUND(isize)  ((unsigned int)(isize) > (unsigned int)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)
+
+/*
+LZ4_compressBound() :
+    Provides the maximum size that LZ4 may output in a "worst case" scenario (input data not compressible)
+    primarily useful for memory allocation of output buffer.
+    macro is also provided when result needs to be evaluated at compilation (such as stack memory allocation).
+
+    isize  : is the input size. Max supported value is LZ4_MAX_INPUT_SIZE
+    return : maximum output size in a "worst case" scenario
+             or 0, if input size is too large ( > LZ4_MAX_INPUT_SIZE)
+*/
+int LZ4_compressBound(int isize);
+
+
+/*
+LZ4_compress_limitedOutput() :
+    Compress 'inputSize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.
+    If it cannot achieve it, compression will stop, and result of the function will be zero.
+    This function never writes outside of provided output buffer.
+
+    inputSize  : Max supported value is LZ4_MAX_INPUT_VALUE
+    maxOutputSize : is the size of the destination buffer (which must be already allocated)
+    return : the number of bytes written in buffer 'dest'
+             or 0 if the compression fails
+*/
+int LZ4_compress_limitedOutput (const char* source, char* dest, int inputSize, int maxOutputSize);
+
+
+/*
+LZ4_compress_withState() :
+    Same compression functions, but using an externally allocated memory space to store compression state.
+    Use LZ4_sizeofState() to know how much memory must be allocated,
+    and then, provide it as 'void* state' to compression functions.
+*/
+int LZ4_sizeofState(void);
+int LZ4_compress_withState               (void* state, const char* source, char* dest, int inputSize);
+int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
+
+
+/*
+LZ4_decompress_fast() :
+    originalSize : is the original and therefore uncompressed size
+    return : the number of bytes read from the source buffer (in other words, the compressed size)
+             If the source stream is detected malformed, the function will stop decoding and return a negative result.
+             Destination buffer must be already allocated. Its size must be a minimum of 'originalSize' bytes.
+    note : This function fully respect memory boundaries for properly formed compressed data.
+           It is a bit faster than LZ4_decompress_safe().
+           However, it does not provide any protection against intentionnally modified data stream (malicious input).
+           Use this function in trusted environment only (data to decode comes from a trusted source).
+*/
+int LZ4_decompress_fast (const char* source, char* dest, int originalSize);
+
+
+/*
+LZ4_decompress_safe_partial() :
+    This function decompress a compressed block of size 'compressedSize' at position 'source'
+    into destination buffer 'dest' of size 'maxDecompressedSize'.
+    The function tries to stop decompressing operation as soon as 'targetOutputSize' has been reached,
+    reducing decompression time.
+    return : the number of bytes decoded in the destination buffer (necessarily <= maxDecompressedSize)
+       Note : this number can be < 'targetOutputSize' should the compressed block to decode be smaller.
+             Always control how many bytes were decoded.
+             If the source stream is detected malformed, the function will stop decoding and return a negative result.
+             This function never writes outside of output buffer, and never reads outside of input buffer. It is therefore protected against malicious data packets
+*/
+int LZ4_decompress_safe_partial (const char* source, char* dest, int compressedSize, int targetOutputSize, int maxDecompressedSize);
+
+
+/***********************************************
+   Experimental Streaming Compression Functions
+***********************************************/
+
+#define LZ4_STREAMSIZE_U32 ((1 << (LZ4_MEMORY_USAGE-2)) + 8)
+#define LZ4_STREAMSIZE     (LZ4_STREAMSIZE_U32 * sizeof(unsigned int))
+/*
+ * LZ4_stream_t
+ * information structure to track an LZ4 stream.
+ * important : init this structure content before first use !
+ */
+typedef struct { unsigned int table[LZ4_STREAMSIZE_U32]; } LZ4_stream_t;
+
+/*
+ * LZ4_resetStream
+ * Use this function to init a newly allocated LZ4_stream_t structure
+ * You can also reset an existing LZ4_stream_t structure
+ */
+void LZ4_resetStream (LZ4_stream_t* LZ4_stream);
+
+/*
+ * If you prefer dynamic allocation methods,
+ * LZ4_createStream will allocate and initialize an LZ4_stream_t structure
+ * LZ4_freeStream releases its memory.
+ */
+LZ4_stream_t* LZ4_createStream(void);
+int           LZ4_freeStream (LZ4_stream_t* LZ4_stream);
+
+/*
+ * LZ4_loadDict
+ * Use this function to load a static dictionary into LZ4_stream.
+ * Any previous data will be forgotten, only 'dictionary' will remain in memory.
+ * Loading a size of 0 is allowed.
+ * Return : 1 if OK, 0 if error
+ */
+int LZ4_loadDict (LZ4_stream_t* LZ4_stream, const char* dictionary, int dictSize);
+
+/*
+ * LZ4_compress_continue
+ * Compress data block 'source', using blocks compressed before as dictionary to improve compression ratio
+ * Previous data blocks are assumed to still be present at their previous location.
+ */
+int LZ4_compress_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize);
+
+/*
+ * LZ4_compress_limitedOutput_continue
+ * Same as before, but also specify a maximum target compressed size (maxOutputSize)
+ * If objective cannot be met, compression exits, and returns a zero.
+ */
+int LZ4_compress_limitedOutput_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize, int maxOutputSize);
+
+/*
+ * LZ4_saveDict
+ * If previously compressed data block is not guaranteed to remain available at its memory location
+ * save it into a safe place (char* safeBuffer)
+ * Note : you don't need to call LZ4_loadDict() afterwards,
+ *        dictionary is immediately usable, you can therefore call again LZ4_compress_continue()
+ * Return : 1 if OK, 0 if error
+ * Note : any dictSize > 64 KB will be interpreted as 64KB.
+ */
+int LZ4_saveDict (LZ4_stream_t* LZ4_stream, char* safeBuffer, int dictSize);
+
+
+/************************************************
+  Experimental Streaming Decompression Functions
+************************************************/
+
+#define LZ4_STREAMDECODESIZE_U32 4
+#define LZ4_STREAMDECODESIZE     (LZ4_STREAMDECODESIZE_U32 * sizeof(unsigned int))
+/*
+ * LZ4_streamDecode_t
+ * information structure to track an LZ4 stream.
+ * important : init this structure content using LZ4_setStreamDecode or memset() before first use !
+ */
+typedef struct { unsigned int table[LZ4_STREAMDECODESIZE_U32]; } LZ4_streamDecode_t;
+
+/*
+ * LZ4_setStreamDecode
+ * Use this function to instruct where to find the dictionary.
+ * This function can be used to specify a static dictionary,
+ * or to instruct where to find some previously decoded data saved into a different memory space.
+ * Setting a size of 0 is allowed (same effect as no dictionary).
+ * Return : 1 if OK, 0 if error
+ */
+int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize);
+
+/*
+ * If you prefer dynamic allocation methods,
+ * LZ4_createStreamDecode will allocate and initialize an LZ4_streamDecode_t structure
+ * LZ4_freeStreamDecode releases its memory.
+ */
+LZ4_streamDecode_t* LZ4_createStreamDecode(void);
+int                 LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream);
+
+/*
+*_continue() :
+    These decoding functions allow decompression of multiple blocks in "streaming" mode.
+    Previously decoded blocks must still be available at the memory position where they were decoded.
+    If it's not possible, save the relevant part of decoded data into a safe buffer,
+    and indicate where its new address using LZ4_setDictDecode()
+*/
+int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int compressedSize, int maxOutputSize);
+int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int originalSize);
+
+
+/*
+Advanced decoding functions :
+*_usingDict() :
+    These decoding functions work the same as
+    a combination of LZ4_setDictDecode() followed by LZ4_decompress_x_continue()
+    all together into a single function call.
+    It doesn't use nor update an LZ4_streamDecode_t structure.
+*/
+int LZ4_decompress_safe_usingDict (const char* source, char* dest, int compressedSize, int maxOutputSize, const char* dictStart, int dictSize);
+int LZ4_decompress_fast_usingDict (const char* source, char* dest, int originalSize, const char* dictStart, int dictSize);
+
+
+
+/**************************************
+   Obsolete Functions
+**************************************/
+/*
+Obsolete decompression functions
+These function names are deprecated and should no longer be used.
+They are only provided here for compatibility with older user programs.
+- LZ4_uncompress is the same as LZ4_decompress_fast
+- LZ4_uncompress_unknownOutputSize is the same as LZ4_decompress_safe
+These function prototypes are now disabled; uncomment them if you really need them.
+It is highly recommended to stop using these functions and migrated to newer ones */
+/* int LZ4_uncompress (const char* source, char* dest, int outputSize); */
+/* int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize); */
+
+/*
+ * If you prefer dynamic allocation methods,
+ * LZ4_createStreamDecode()
+ * provides a pointer (void*) towards an initialized LZ4_streamDecode_t structure.
+ * LZ4_free just frees it.
+ */
+/* void* LZ4_createStreamDecode(void); */
+/*int   LZ4_free (void* LZ4_stream);    yes, it's the same one as for compression */
+
+/* Obsolete streaming functions; use new streaming interface whenever possible */
+void* LZ4_create (const char* inputBuffer);
+int   LZ4_sizeofStreamState(void);
+int   LZ4_resetStreamState(void* state, const char* inputBuffer);
+char* LZ4_slideInputBuffer (void* state);
+
+/* Obsolete streaming decoding functions */
+int LZ4_decompress_safe_withPrefix64k (const char* source, char* dest, int compressedSize, int maxOutputSize);
+int LZ4_decompress_fast_withPrefix64k (const char* source, char* dest, int originalSize);
+
+
+#if defined (__cplusplus)
+}
+#endif