first re-commit.

pigpio-master/EXAMPLES/C/IR_RECEIVER/ir_hasher.h

@@ -0,0 +1,33 @@
+#ifndef IR_HASHER_H
+#define IR_HASHER_H
+
+#include <stdint.h>
+
+typedef void (*Pi_Hasher_CB_t)(uint32_t);
+
+struct _Pi_Hasher_s;
+
+typedef struct _Pi_Hasher_s Pi_Hasher_t;
+
+Pi_Hasher_t * Pi_Hasher(int gpio, Pi_Hasher_CB_t callback, int timeout);
+   /*
+      This function establishes an IR hasher on the gpio.
+
+      A gap of timeout milliseconds without a new bit indicates
+      the end of a code.
+
+      When code end is detected the callback function is called
+      with the code hash.
+
+      A pointer to a private data type is returned.  This should be passed
+      to Pi_Hasher_cancel if the hasher is to be cancelled.
+   */
+
+
+void Pi_Hasher_cancel(Pi_Hasher_t *hasher);
+   /*
+      This function releases the resources used by the hasher.
+   */
+
+
+#endif