merged zdict_static.h into zdict.h. Now requires ZDICT_STATIC_LINKING_ONLY macro.

lib/dictBuilder/zdict.h

@@ -75,6 +75,44 @@ unsigned ZDICT_isError(size_t errorCode);
 const char* ZDICT_getErrorName(size_t errorCode);
 
 
+#ifdef ZDICT_STATIC_LINKING_ONLY
+
+/* ====================================================================================
+ * The definitions in this section are considered experimental.
+ * They should never be used in association with a dynamic library, as they may change in the future.
+ * They are provided for advanced usages.
+ * Use them only in association with static linking.
+ * ==================================================================================== */
+
+
+/*-*************************************
+*  Public type
+***************************************/
+typedef struct {
+    unsigned selectivityLevel;   /* 0 means default; larger => bigger selection => larger dictionary */
+    unsigned compressionLevel;   /* 0 means default; target a specific zstd compression level */
+    unsigned notificationLevel;  /* Write to stderr; 0 = none (default); 1 = errors; 2 = progression; 3 = details; 4 = debug; */
+    unsigned dictID;             /* 0 means auto mode (32-bits random value); other : force dictID value */
+    unsigned reserved[2];        /* space for future parameters */
+} ZDICT_params_t;
+
+
+/*-*************************************
+*  Public functions
+***************************************/
+/*! ZDICT_trainFromBuffer_advanced() :
+    Same as ZDICT_trainFromBuffer() with control over more parameters.
+    `parameters` is optional and can be provided with values set to 0 to mean "default".
+    @return : size of dictionary stored into `dictBuffer` (<= `dictBufferSize`)
+              or an error code, which can be tested by ZDICT_isError().
+    note : ZDICT_trainFromBuffer_advanced() will send notifications into stderr if instructed to, using ZDICT_setNotificationLevel()
+*/
+size_t ZDICT_trainFromBuffer_advanced(void* dictBuffer, size_t dictBufferCapacity,
+                             const void* samplesBuffer, const size_t* samplesSizes, unsigned nbSamples,
+                             ZDICT_params_t parameters);
+
+#endif   /* ZDICT_STATIC_LINKING_ONLY */
+
 #if defined (__cplusplus)
 }
 #endif