Sets the pointer to null.

Clears the FIFO and allocates a size for it. Note that this is not thread-safe with respect to the other methods - it must only be cal

Clears the FIFO and allocates a size for it. Note that this is not thread-safe with respect to the other methods - it must only be called when nothing

Resets the FIFO, keeping the current size. */

This is the initial function that is called when the callback is set. This one then calls the functions above.

The following 3 functions are called by the device probing system. This first one gets overall system information.

Used to get output device information.

Used to get input device information.

size1*size2 + size3 */

size1 * (size2 + size3) */

* Scan a literal or distance tree to determine the frequencies of the codes * in the bit length tree. */

used as the sort predicate for qsort() */

* Send the header for a block using dynamic Huffman trees: the counts, the * lengths of the bit length codes, the literal tree and the distance t