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-rw-r--r--lib/lz4frame_static.h56
1 files changed, 55 insertions, 1 deletions
diff --git a/lib/lz4frame_static.h b/lib/lz4frame_static.h
index d3bae82..1899f8e 100644
--- a/lib/lz4frame_static.h
+++ b/lib/lz4frame_static.h
@@ -59,7 +59,7 @@ extern "C" {
ITEM(ERROR_contentChecksumFlag_invalid) \
ITEM(ERROR_compressionLevel_invalid) \
ITEM(ERROR_headerVersion_wrong) \
- ITEM(ERROR_blockChecksum_unsupported) \
+ ITEM(ERROR_blockChecksum_invalid) \
ITEM(ERROR_reservedFlag_set) \
ITEM(ERROR_allocation_failed) \
ITEM(ERROR_srcSize_tooLarge) \
@@ -82,6 +82,60 @@ typedef enum { LZ4F_LIST_ERRORS(LZ4F_GENERATE_ENUM) } LZ4F_errorCodes;
LZ4F_errorCodes LZ4F_getErrorCode(size_t functionResult);
+
+/**********************************
+ * Bulk processing dictionary API
+ *********************************/
+typedef struct LZ4F_CDict_s LZ4F_CDict;
+
+/*! LZ4_createCDict() :
+ * When compressing multiple messages / blocks with the same dictionary, it's recommended to load it just once.
+ * LZ4_createCDict() will create a digested dictionary, ready to start future compression operations without startup delay.
+ * LZ4_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only.
+ * `dictBuffer` can be released after LZ4_CDict creation, since its content is copied within CDict */
+LZ4F_CDict* LZ4F_createCDict(const void* dictBuffer, size_t dictSize);
+void LZ4F_freeCDict(LZ4F_CDict* CDict);
+
+
+/*! LZ4_compressFrame_usingCDict() :
+ * Compress an entire srcBuffer into a valid LZ4 frame using a digested Dictionary.
+ * If cdict==NULL, compress without a dictionary.
+ * dstBuffer MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
+ * If this condition is not respected, function will fail (@return an errorCode).
+ * The LZ4F_preferences_t structure is optional : you may provide NULL as argument,
+ * but it's not recommended, as it's the only way to provide dictID in the frame header.
+ * @return : number of bytes written into dstBuffer.
+ * or an error code if it fails (can be tested using LZ4F_isError()) */
+size_t LZ4F_compressFrame_usingCDict(void* dst, size_t dstCapacity,
+ const void* src, size_t srcSize,
+ const LZ4F_CDict* cdict,
+ const LZ4F_preferences_t* preferencesPtr);
+
+
+/*! LZ4F_compressBegin_usingCDict() :
+ * Inits streaming dictionary compression, and writes the frame header into dstBuffer.
+ * dstCapacity must be >= LZ4F_HEADER_SIZE_MAX bytes.
+ * `prefsPtr` is optional : you may provide NULL as argument,
+ * however, it's the only way to provide dictID in the frame header.
+ * @return : number of bytes written into dstBuffer for the header,
+ * or an error code (which can be tested using LZ4F_isError()) */
+size_t LZ4F_compressBegin_usingCDict(LZ4F_cctx* cctx,
+ void* dstBuffer, size_t dstCapacity,
+ const LZ4F_CDict* cdict,
+ const LZ4F_preferences_t* prefsPtr);
+
+
+/*! LZ4F_decompress_usingDict() :
+ * Same as LZ4F_decompress(), using a predefined dictionary.
+ * Dictionary is used "in place", without any preprocessing.
+ * It must remain accessible throughout the entire frame decoding. */
+size_t LZ4F_decompress_usingDict(LZ4F_dctx* dctxPtr,
+ void* dstBuffer, size_t* dstSizePtr,
+ const void* srcBuffer, size_t* srcSizePtr,
+ const void* dict, size_t dictSize,
+ const LZ4F_decompressOptions_t* decompressOptionsPtr);
+
+
#if defined (__cplusplus)
}
#endif