From 41a6b0ebb6f71032c5a8e69e6aa8c813657224d7 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Mon, 27 Jul 2015 19:36:28 +0200
Subject: Add free-wheel mode to LV2 and DrumGizmo class.

---
 src/cachemanager.cc |  9 ++++++++-
 src/cachemanager.h  |  9 +++++++++
 src/drumgizmo.cc    | 11 +++++++++++
 src/drumgizmo.h     |  3 +++
 4 files changed, 31 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/cachemanager.cc b/src/cachemanager.cc
index dc4b3e7..4cc1fa5 100644
--- a/src/cachemanager.cc
+++ b/src/cachemanager.cc
@@ -321,6 +321,14 @@ void CacheManager::setFrameSize(size_t framesize)
   this->framesize = framesize;
 }
 
+void CacheManager::setAsyncMode(bool async)
+{
+  // TODO: Clean out read queue.
+  // TODO: Block until reader thread is idle, otherwise we might screw up the
+  // buffers...?
+  threaded = async;
+}
+
 void CacheManager::handleLoadNextEvent(cevent_t &e) 
 {
   assert(files.find(e.afile->filename) != files.end());
@@ -355,7 +363,6 @@ void CacheManager::handleCloseEvent(cevent_t &e)
   }
 }
 
-
 void CacheManager::handleEvent(cevent_t &e)
 {
   switch(e.cmd) {
diff --git a/src/cachemanager.h b/src/cachemanager.h
index 4fe813e..1660ecf 100644
--- a/src/cachemanager.h
+++ b/src/cachemanager.h
@@ -130,8 +130,17 @@ public:
    */
   void close(cacheid_t id);
 
+  /**
+   * Set internal framesize used when iterating through cache buffers.
+   */
   void setFrameSize(size_t framesize);
 
+  /**
+   * Control reader thread.
+   * Set to true to make reading happen threaded, false to do all reading sync.
+   */
+  void setAsyncMode(bool async);
+
   ///! Internal thread main method - needs to be public.
   void thread_main();
 
diff --git a/src/drumgizmo.cc b/src/drumgizmo.cc
index 528b542..5348324 100644
--- a/src/drumgizmo.cc
+++ b/src/drumgizmo.cc
@@ -51,6 +51,7 @@ DrumGizmo::DrumGizmo(AudioOutputEngine *o, AudioInputEngine *i)
   , oe(o)
   , ie(i)
   , framesize(0)
+  , freewheel(false)
 {
   is_stopping = false;
   cacheManager.init(1000, true); // start thread
@@ -189,6 +190,16 @@ void DrumGizmo::setFrameSize(size_t framesize)
   }
 }
 
+void DrumGizmo::setFreeWheel(bool freewheel)
+{
+  // Freewheel = true means that we are bouncing and therefore running faster
+  // than realtime.
+  if(freewheel != this->freewheel) {
+    this->freewheel = freewheel;
+    cacheManager.setAsyncMode(!freewheel);
+  }
+}
+
 bool DrumGizmo::run(size_t pos, sample_t *samples, size_t nsamples)
 {
   setFrameSize(nsamples);
diff --git a/src/drumgizmo.h b/src/drumgizmo.h
index 807e1e0..240ae9f 100644
--- a/src/drumgizmo.h
+++ b/src/drumgizmo.h
@@ -77,6 +77,8 @@ public:
 
   void setFrameSize(size_t framesize);
 
+  void setFreeWheel(bool freewheel);
+
 private:
   DrumKitLoader loader;
 
@@ -99,4 +101,5 @@ private:
   DrumKit kit;
 
   size_t framesize;
+  bool freewheel;
 };
-- 
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