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igzip: Add a hufftable for the static Huffman code in Deflate

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Change-Id: If8aadce05bcb705e608fe3ed6028be9a7448fa59
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
This commit is contained in:
Roy Oursler
2016-10-31 20:06:55 -07:00
committed by Greg Tucker
parent e1bcebc93a
commit 7fefb53938
5 changed files with 2345 additions and 33 deletions
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27
include/igzip_lib.h
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@@ -129,6 +129,10 @@ enum { IGZIP_DECODE_OFFSET = 0 };
enum {IGZIP_LEN_TABLE_SIZE = 256};
enum {IGZIP_LIT_TABLE_SIZE = ISAL_DEF_LIT_SYMBOLS};
#define IGZIP_HUFFTABLE_CUSTOM 0
#define IGZIP_HUFFTABLE_DEFAULT 1
#define IGZIP_HUFFTABLE_STATIC 2
/* Flush Flags */
#define NO_FLUSH 0 /* Default */
#define SYNC_FLUSH 1
@@ -145,6 +149,7 @@ enum {IGZIP_LIT_TABLE_SIZE = ISAL_DEF_LIT_SYMBOLS};
#define INVALID_FLUSH -7
#define INVALID_PARAM -8
#define STATELESS_OVERFLOW -1
#define ISAL_INVALID_OPERATION -9
/**
* @enum isal_zstate
@@ -419,6 +424,28 @@ int isal_create_hufftables_subset(struct isal_hufftables * hufftables,
*/
void isal_deflate_init(struct isal_zstream *stream);
/**
* @brief Set stream to use a new Huffman code
*
* Sets the Huffman code to be used in compression before compression start or
* after the sucessful completion of a SYNC_FLUSH or FULL_FLUSH. If type has
* value IGZIP_HUFFTABLE_DEFAULT, the stream is set to use the default Huffman
* code. If type has value IGZIP_HUFFTABLE_STATIC, the stream is set to use the
* deflate standard static Huffman code, or if type has value
* IGZIP_HUFFTABLE_CUSTOM, the stream is set to sue the isal_hufftables
* structure input to isal_deflate_set_hufftables.
*
* @param stream: Structure holding state information on the compression stream.
* @param hufftables: new huffman code to use if type is set to
* IGZIP_HUFFTABLE_CUSTOM.
* @param type: Flag specifying what hufftable to use.
*
* @returns Returns INVALID_OPERATION if the stream was unmodified. This may be
* due to the stream being in a state where changing the huffman code is not
* allowed or an invalid input is provided.
*/
int isal_deflate_set_hufftables(struct isal_zstream *stream,
struct isal_hufftables *hufftables, int type);
/**
* @brief Initialize compression stream data structure