Try to compress small buffers too (e.g. zeros)

Author: FrancescAlted

blosc/blosc2.c

@@ -2219,10 +2219,6 @@ static int write_compression_header(blosc2_context* context, bool extended_heade
     /* Compression level 0 means buffer to be memcpy'ed */
     context->header_flags |= (uint8_t)BLOSC_MEMCPYED;
   }
-  if (context->sourcesize < BLOSC_MIN_BUFFERSIZE) {
-    /* Buffer is too small.  Try memcpy'ing. */
-    context->header_flags |= (uint8_t)BLOSC_MEMCPYED;
-  }
 
   bool memcpyed = context->header_flags & (uint8_t)BLOSC_MEMCPYED;
   if (extended_header) {

include/blosc2.h

@@ -1726,7 +1726,7 @@ BLOSC_EXPORT int blosc2_schunk_decompress_chunk(blosc2_schunk *schunk, int64_t n
  *
  * @warning If the super-chunk is backed by a frame that is disk-based, a buffer is allocated for the
  * (compressed) chunk, and hence a free is needed.
- * You can check if the chunk requires a free with the @p needs_free parameter.
+ * You can check whether the chunk requires a free with the @p needs_free parameter.
  * If the chunk does not need a free, it means that a pointer to the location in the super-chunk
  * (or the backing in-memory frame) is returned in the @p chunk parameter.
  *
@@ -1751,7 +1751,7 @@ BLOSC_EXPORT int blosc2_schunk_get_chunk(blosc2_schunk *schunk, int64_t nchunk,
  *
  * @warning If the super-chunk is backed by a frame that is disk-based, a buffer is allocated for the
  * (compressed) chunk, and hence a free is needed.
- * You can check if the chunk requires a free with the @p needs_free parameter.
+ * You can check whether requires a free with the @p needs_free parameter.
  * If the chunk does not need a free, it means that a pointer to the location in the super-chunk
  * (or the backing in-memory frame) is returned in the @p chunk parameter.  In this case the returned
  * chunk is not lazy.