fix crash when copy'ing latent plugins

[ardour.git] / libs / ardour / audio_port.cc

diff --git a/libs/ardour/audio_port.cc b/libs/ardour/audio_port.cc
index 23c8ab8335cb520d338210eed427e6435e20dcee..33e41c10ad49cc309615af9d4778e0d5d426b610 100644 (file)
--- a/libs/ardour/audio_port.cc
+++ b/libs/ardour/audio_port.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2006 Paul Davis 
+    Copyright (C) 2006 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,35 +17,78 @@
 */
 
 #include <cassert>
-#include <ardour/audio_port.h>
-#include <ardour/data_type.h>
+
+#include "pbd/stacktrace.h"
+
+#include "ardour/audio_buffer.h"
+#include "ardour/audioengine.h"
+#include "ardour/audio_port.h"
+#include "ardour/data_type.h"
+#include "ardour/port_engine.h"
 
 using namespace ARDOUR;
 using namespace std;
 
-nframes_t AudioPort::_short_over_length = 2;
-nframes_t AudioPort::_long_over_length = 10;
+#define port_engine AudioEngine::instance()->port_engine()
+
+AudioPort::AudioPort (const std::string& name, PortFlags flags)
+       : Port (name, DataType::AUDIO, flags)
+       , _buffer (new AudioBuffer (0))
+{
+       assert (name.find_first_of (':') == string::npos);
+}
+
+AudioPort::~AudioPort ()
+{
+       delete _buffer;
+}
 
-AudioPort::AudioPort()
-       : _buffer (0)
+void
+AudioPort::cycle_start (pframes_t nframes)
 {
-       _type = DataType::AUDIO;
-       reset();
+       /* caller must hold process lock */
+
+        Port::cycle_start (nframes);
+
+       if (sends_output()) {
+               _buffer->prepare ();
+       }
 }
 
 void
-AudioPort::reset()
+AudioPort::cycle_end (pframes_t nframes)
 {
-       Port::reset();
-       if (_flags & IsOutput) {
-               if (_buffer.capacity() > 0) {
-                       _buffer.clear();
+        if (sends_output() && !_buffer->written()) {
+               if (!_buffer->data (0)) {
+                       get_audio_buffer (nframes);
+               }
+               if (_buffer->capacity() >= nframes) {
+                       _buffer->silence (nframes);
                }
-               assert(_buffer.silent());
        }
-       
-       _metering = 0;
-       reset_meters ();
 }
 
+void
+AudioPort::cycle_split ()
+{
+}
+
+AudioBuffer&
+AudioPort::get_audio_buffer (pframes_t nframes)
+{
+       /* caller must hold process lock */
+       _buffer->set_data ((Sample *) port_engine.get_buffer (_port_handle, _cycle_nframes) +
+                          _global_port_buffer_offset + _port_buffer_offset, nframes);
+       return *_buffer;
+}
+
+Sample*
+AudioPort::engine_get_whole_audio_buffer ()
+{
+       /* caller must hold process lock */
+       return (Sample *) port_engine.get_buffer (_port_handle, _cycle_nframes);
+}
+
+
+