1 files changed, 36 insertions, 0 deletions
diff --git a/ossfuzz/fuzz_data_producer.h b/ossfuzz/fuzz_data_producer.h
new file mode 100644
index 0000000..b96dcba
--- /dev/null
+++ b/ossfuzz/fuzz_data_producer.h
@@ -0,0 +1,36 @@
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "fuzz_helpers.h"
+#include "lz4frame.h"
+#include "lz4hc.h"
+
+/* Struct used for maintaining the state of the data */
+typedef struct FUZZ_dataProducer_s FUZZ_dataProducer_t;
+
+/* Returns a data producer state struct. Use for producer initialization. */
+FUZZ_dataProducer_t *FUZZ_dataProducer_create(const uint8_t *data, size_t size);
+
+/* Frees the data producer */
+void FUZZ_dataProducer_free(FUZZ_dataProducer_t *producer);
+
+/* Returns 32 bits from the end of data */
+uint32_t FUZZ_dataProducer_retrieve32(FUZZ_dataProducer_t *producer);
+
+/* Returns value between [min, max] */
+uint32_t FUZZ_getRange_from_uint32(uint32_t seed, uint32_t min, uint32_t max);
+
+/* Combination of above two functions for non adaptive use cases. ie where size is not involved */
+uint32_t FUZZ_dataProducer_range32(FUZZ_dataProducer_t *producer, uint32_t min,
+                                  uint32_t max);
+
+/* Returns lz4 preferences */
+LZ4F_preferences_t FUZZ_dataProducer_preferences(FUZZ_dataProducer_t* producer);
+
+/* Returns lz4 frame info */
+LZ4F_frameInfo_t FUZZ_dataProducer_frameInfo(FUZZ_dataProducer_t* producer);
+
+/* Returns the size of the remaining bytes of data in the producer */
+size_t FUZZ_dataProducer_remainingBytes(FUZZ_dataProducer_t *producer);