comparison projects/heavy/hello-world/ControlRandom.c @ 160:5bcf04234f80 heavy-updated

- added -std=c99 to Makefile for user-supplied C files (required for heavy files)
- changed heavy core render.cpp file to use latest API and removed all redundant functions (e.g. foleyDesigner/touchkey stuff)
- use build_pd.sh to compile and run pd files (-h for usage instructions)

+/**
+ * Copyright (c) 2014, 2015, Enzien Audio Ltd.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "ControlRandom.h"
+#include "HvBase.h"
+
+// http://www.firstpr.com.au/dsp/rand31
+// http://en.wikipedia.org/wiki/Lehmer_random_number_generator
+
+hv_size_t cRandom_init(ControlRandom *o, int seed) {
+  o->state = (seed != 0) ? seed : 1;
+  return 0;
+}
+
+void cRandom_onMessage(HvBase *_c, ControlRandom *o, int inletIndex, const HvMessage *m,
+    void (*sendMessage)(HvBase *, int, const HvMessage *)) {
+  switch (inletIndex) {
+    case 0: {
+      HvMessage *n = HV_MESSAGE_ON_STACK(1);
+      o->state = (int) ((((unsigned long long) o->state) * 279470273UL) % 4294967291UL);
+      float f = ((float) (o->state >> 9)) * 0.00000011920929f;
+      msg_initWithFloat(n, msg_getTimestamp(m), f);
+      sendMessage(_c, 0, n);
+      break;
+    }
+    case 1: {
+      if (msg_isFloat(m,0)) {
+        o->state = (int) msg_getFloat(m,0);
+      }
+      break;
+    }
+    default: break;
+  }
+}