streamDecode_t context can be allocated once and re-used multiple times.
  Use this function to start decompression of a new stream of blocks.
  A dictionary can optionally be set. Use NULL or size 0 for a reset order.
  Dictionary is presumed stable : it must remain accessible and unmodified during next decompression.
 @return : 1 if OK, 0 if error
 
</p></pre><BR>

<pre><b>int LZ4_decoderRingBufferSize(int maxBlockSize);
#define LZ4_DECODER_RING_BUFFER_SIZE(mbs) (65536 + 14 + (mbs))  </b>/* for static all