Move _port_offset up to AudioPort, as MidiPort does not use it.

git-svn-id: svn://localhost/ardour2/branches/3.0@7614 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/ardour/audio_port.h

@@ -47,6 +47,16 @@ class AudioPort : public Port
 
 	AudioBuffer& get_audio_buffer (nframes_t nframes, nframes_t offset = 0);
 
+	static nframes_t port_offset() { return _port_offset; }
+
+	static void set_port_offset (nframes_t off) {
+		_port_offset = off;
+	}
+	
+	static void increment_port_offset (nframes_t n) {
+		_port_offset += n;
+	}
+	
   protected:
 	friend class AudioEngine;
 
@@ -55,6 +65,7 @@ class AudioPort : public Port
   private:
 	AudioBuffer* _buffer;
 
+	static nframes_t _port_offset;
 };
 
 } // namespace ARDOUR

libs/ardour/ardour/port.h

@@ -45,14 +45,6 @@ public:
 
 	virtual ~Port ();
 
-	static nframes_t port_offset() { return _port_offset; }
-
-	static void set_port_offset (nframes_t off) {
-		_port_offset = off;
-	}
-	static void increment_port_offset (nframes_t n) {
-		_port_offset += n;
-	}
 	static void set_buffer_size (nframes_t sz) {
 		_buffer_size = sz;
 	}
@@ -63,7 +55,6 @@ public:
 		return _connecting_blocked;
 	}
 
-
 	/** @return Port short name */
 	std::string name () const {
 		return _name;
@@ -135,7 +126,6 @@ protected:
 
 	jack_port_t* _jack_port; ///< JACK port
 
-	static nframes_t _port_offset;
 	static nframes_t _buffer_size;
 	static bool	 _connecting_blocked;
         

libs/ardour/audio_port.cc

@@ -25,6 +25,8 @@
 using namespace ARDOUR;
 using namespace std;
 
+nframes_t AudioPort::_port_offset = 0;
+
 AudioPort::AudioPort (const std::string& name, Flags flags)
 	: Port (name, DataType::AUDIO, flags)
 	, _buffer (new AudioBuffer (0))

libs/ardour/audioengine.cc

@@ -401,7 +401,7 @@ AudioEngine::split_cycle (nframes_t offset)
 {
 	/* caller must hold process lock */
 
-	Port::increment_port_offset (offset);
+	AudioPort::increment_port_offset (offset);
 
 	/* tell all Ports that we're going to start a new (split) cycle */
 
@@ -484,7 +484,7 @@ AudioEngine::process_callback (nframes_t nframes)
 	/* tell all relevant objects that we're starting a new cycle */
 
 	Delivery::CycleStart (nframes);
-	Port::set_port_offset (0);
+	AudioPort::set_port_offset (0);
 	InternalReturn::CycleStart (nframes);
 
 	/* tell all Ports that we're starting a new cycle */

libs/ardour/midi_port.cc

@@ -67,8 +67,6 @@ MidiPort::get_midi_buffer (nframes_t nframes, nframes_t offset)
 		   into our MidiBuffer
 		*/
 
-		nframes_t off = offset + _port_offset;
-
 		for (nframes_t i = 0; i < event_count; ++i) {
 
 			jack_midi_event_t ev;
@@ -80,10 +78,10 @@ MidiPort::get_midi_buffer (nframes_t nframes, nframes_t offset)
                                 continue;
                         }
 
-			if (ev.time >= off && ev.time < off+nframes) {
+			if (ev.time > offset && ev.time < (offset + nframes)) {
 				_buffer->push_back (ev);
 			} else {
-				cerr << "Dropping incoming MIDI at time " << ev.time << "; offset=" << off << " limit=" << (off + nframes) << "\n";
+				cerr << "Dropping incoming MIDI at time " << ev.time << "; offset=" << offset << " limit=" << (offset + nframes) << "\n";
 			}
 		}
 
@@ -139,18 +137,14 @@ MidiPort::flush_buffers (nframes_t nframes, nframes64_t time, nframes_t offset)
 
 			// event times are in frames, relative to cycle start
 
-			// XXX split cycle start or cycle start?
+			assert (ev.time() < (nframes + offset));
 
-			assert(ev.time() < (nframes+offset+_port_offset));
-
-			if (ev.time() >= offset + _port_offset) {
+			if (ev.time() >= offset) {
 				if (jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size()) != 0) {
-                                        cerr << "write failed, drop flushed note off on the floor, time " << ev.time() << " > " << offset << " + " << _port_offset 
-                                             << endl;			
+                                        cerr << "write failed, drop flushed note off on the floor, time " << ev.time() << " > " << offset << endl;
                                 }
                         } else {
-                                cerr << "drop flushed note off on the floor, time " << ev.time() << " > " << offset << " + " << _port_offset 
-                                     << endl;
+                                cerr << "drop flushed event on the floor, time " << ev.time() << " < " << offset << endl;
                         }
 		}
 	}

libs/ardour/port.cc

@@ -34,7 +34,6 @@ using namespace std;
 using namespace ARDOUR;
 
 AudioEngine* Port::_engine = 0;
-nframes_t Port::_port_offset = 0;
 nframes_t Port::_buffer_size = 0;
 bool Port::_connecting_blocked = false;
 

libs/ardour/session_process.cc

@@ -37,7 +37,7 @@
 #include "ardour/slave.h"
 #include "ardour/timestamps.h"
 #include "ardour/graph.h"
-#include "ardour/port.h"
+#include "ardour/audio_port.h"
 
 #include "midi++/manager.h"
 #include "midi++/mmc.h"
@@ -884,7 +884,7 @@ Session::maybe_sync_start (nframes_t& nframes)
 
 		no_roll (sync_offset);
 		nframes -= sync_offset;
-		Port::increment_port_offset (sync_offset);
+		AudioPort::increment_port_offset (sync_offset);
 		waiting_for_sync_offset = false;
 
 		if (nframes == 0) {