3 files changed, 28 insertions, 27 deletions

diff --git a/src/server/EnginePort.hpp b/src/server/EnginePort.hpp
index 39f25d5c..7ba58871 100644
--- a/src/server/EnginePort.hpp
+++ b/src/server/EnginePort.hpp
@@ -19,9 +19,8 @@
 
 #include <string>
 
-#include <boost/utility.hpp>
-
 #include "raul/Deletable.hpp"
+#include "raul/Noncopyable.hpp"
 
 #include "DuplexPort.hpp"
 
@@ -33,7 +32,7 @@ namespace Server {
 class DuplexPort;
 class ProcessContext;
 
-/** Representation of a "system" (eg outside Ingen) port.
+/** Representation of a "system" port (a port outside Ingen).
  *
  * This is the class through which the rest of the engine manages everything
  * related to driver ports.  Derived classes are expected to have a pointer to
@@ -41,8 +40,9 @@ class ProcessContext;
  *
  * \ingroup engine
  */
-class EnginePort : boost::noncopyable, public Raul::Deletable {
+class EnginePort : public Raul::Noncopyable, public Raul::Deletable {
 public:
+	EnginePort() : _patch_port(NULL), _buffer(NULL) {}
 	virtual ~EnginePort() {}
 
 	/** Set the name of the system port according to new path */
@@ -54,6 +54,9 @@ public:
 	/** Destroy system port */
 	virtual void destroy() = 0;
 
+	void* buffer() const        { return _buffer; }
+	void  set_buffer(void* buf) { _buffer = buf; }
+
 	bool        is_input()   const { return _patch_port->is_input(); }
 	DuplexPort* patch_port() const { return _patch_port; }
 
@@ -61,6 +64,7 @@ protected:
 	explicit EnginePort(DuplexPort* port) : _patch_port(port) {}
 
 	DuplexPort* _patch_port;
+	void*       _buffer;
 };
 
 } // namespace Server
diff --git a/src/server/JackDriver.cpp b/src/server/JackDriver.cpp
index edebff55..40644a08 100644
--- a/src/server/JackDriver.cpp
+++ b/src/server/JackDriver.cpp
@@ -110,29 +110,28 @@ JackPort::move(const Raul::Path& path)
 void
 JackPort::pre_process(ProcessContext& context)
 {
-	if (!is_input())
-		return;
-
 	const SampleCount nframes = context.nframes();
+	_buffer = jack_port_get_buffer(_jack_port, nframes);
 
-	if (_patch_port->is_a(PortType::AUDIO)) {
-		jack_sample_t* jack_buf  = (jack_sample_t*)jack_port_get_buffer(_jack_port, nframes);
-		AudioBuffer*   patch_buf = (AudioBuffer*)_patch_port->buffer(0).get();
+	if (!is_input()) {
+		return;
+	}
 
-		patch_buf->copy(jack_buf, 0, nframes - 1);
+	if (_patch_port->is_a(PortType::AUDIO)) {
+		AudioBuffer* patch_buf = (AudioBuffer*)_patch_port->buffer(0).get();
+		patch_buf->copy((jack_sample_t*)_buffer, 0, nframes - 1);
 
 	} else if (_patch_port->buffer_type() == _patch_port->bufs().uris().atom_Sequence) {
-		void*   jack_buf  = jack_port_get_buffer(_jack_port, nframes);
 		Buffer* patch_buf = (Buffer*)_patch_port->buffer(0).get();
 
-		const jack_nframes_t event_count = jack_midi_get_event_count(jack_buf);
+		const jack_nframes_t event_count = jack_midi_get_event_count(_buffer);
 
 		patch_buf->prepare_write(context);
 
 		// Copy events from Jack port buffer into patch port buffer
 		for (jack_nframes_t i = 0; i < event_count; ++i) {
 			jack_midi_event_t ev;
-			jack_midi_event_get(&ev, jack_buf, i);
+			jack_midi_event_get(&ev, _buffer, i);
 
 			if (!patch_buf->append_event(
 				    ev.time, ev.size, _driver->_midi_event_type, ev.buffer)) {
@@ -145,29 +144,32 @@ JackPort::pre_process(ProcessContext& context)
 void
 JackPort::post_process(ProcessContext& context)
 {
-	if (is_input())
+	const SampleCount nframes = context.nframes();
+	if (is_input()) {
 		return;
+	}
 
-	const SampleCount nframes = context.nframes();
+	if (!_buffer) {
+		// First cycle for a new outputs, so pre_process wasn't called
+		_buffer = jack_port_get_buffer(_jack_port, nframes);
+	}
 
 	if (_patch_port->is_a(PortType::AUDIO)) {
-		jack_sample_t* jack_buf  = (jack_sample_t*)jack_port_get_buffer(_jack_port, nframes);
-		AudioBuffer*   patch_buf = (AudioBuffer*)_patch_port->buffer(0).get();
+		AudioBuffer* patch_buf = (AudioBuffer*)_patch_port->buffer(0).get();
 
-		memcpy(jack_buf, patch_buf->data(), nframes * sizeof(Sample));
+		memcpy(_buffer, patch_buf->data(), nframes * sizeof(Sample));
 
 	} else if (_patch_port->buffer_type() == _patch_port->bufs().uris().atom_Sequence) {
-		void*   jack_buf  = jack_port_get_buffer(_jack_port, context.nframes());
 		Buffer* patch_buf = (Buffer*)_patch_port->buffer(0).get();
 
 		patch_buf->prepare_read(context);
-		jack_midi_clear_buffer(jack_buf);
+		jack_midi_clear_buffer(_buffer);
 
 		LV2_Atom_Sequence* seq = (LV2_Atom_Sequence*)patch_buf->atom();
 		LV2_ATOM_SEQUENCE_FOREACH(seq, ev) {
 			const uint8_t* buf = (const uint8_t*)LV2_ATOM_BODY(&ev->body);
 			if (ev->body.type == _patch_port->bufs().uris().midi_MidiEvent) {
-				jack_midi_event_write(jack_buf, ev->time.frames, buf, ev->body.size);
+				jack_midi_event_write(_buffer, ev->time.frames, buf, ev->body.size);
 			}
 		}
 	}
diff --git a/src/server/ingen_lv2.cpp b/src/server/ingen_lv2.cpp
index 0de22ed3..34d8003f 100644
--- a/src/server/ingen_lv2.cpp
+++ b/src/server/ingen_lv2.cpp
@@ -87,7 +87,6 @@ public:
 	LV2Port(LV2Driver* driver, DuplexPort* patch_port)
 		: EnginePort(patch_port)
 		, _driver(driver)
-		, _buffer(NULL)
 	{}
 
 	// TODO: LV2 dynamic ports
@@ -123,12 +122,8 @@ public:
 		}
 	}
 
-	void* buffer() const        { return _buffer; }
-	void  set_buffer(void* buf) { _buffer = buf; }
-
 private:
 	LV2Driver* _driver;
-	void*      _buffer;
 };
 
 class LV2Driver : public Ingen::Server::Driver