X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Faudio_port.cc;h=1a6c30dcf25b5e6b07c66a27257603d59ad1d76c;hb=b285559767e21aae4467270590f048c3263fd742;hp=714be28f3409c4c0ce7fe4006fd7621bdb9598ba;hpb=449aab3c465bbbf66d221fac3d7ea559f1720357;p=ardour.git

diff --git a/libs/ardour/audio_port.cc b/libs/ardour/audio_port.cc
index 714be28f34..1a6c30dcf2 100644
--- 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
@@ -17,110 +17,130 @@
 */
 
 #include <cassert>
-#include <ardour/audio_port.h>
-#include <ardour/jack_audio_port.h>
-#include <ardour/audioengine.h>
-#include <ardour/data_type.h>
 
-using namespace ARDOUR;
-using namespace std;
-
-AudioPort::AudioPort (const std::string& name, Flags flags, bool external, nframes_t capacity)
-	: Port (name, flags)
-	, BaseAudioPort (name, flags)
-	, PortFacade (name, flags)
-{
-	if (!external || receives_input()) {
-
-		/* internal-only and input ports need their own buffers.
-		   external output ports use the external port buffer.
-		*/
-
-		_buffer = new AudioBuffer (capacity);
-		_own_buffer = true;
-	}
-
-	if (!external) {
-
-		_ext_port = 0;
-		set_name (name);
-
-	} else {
-		
-		/* make the JackAudioPort create its own buffer. For input,
-		   we will copy from it during cycle_start(). For output,
-		   we will set up our buffer to point to its buffer, which
-		   will in turn be using the JACK port buffer for data.
-		*/
+#include "pbd/malign.h"
+#include "pbd/stacktrace.h"
 
-		_ext_port = new JackAudioPort (name, flags, 0);
+#include "ardour/audio_buffer.h"
+#include "ardour/audioengine.h"
+#include "ardour/audio_port.h"
+#include "ardour/data_type.h"
+#include "ardour/port_engine.h"
 
-		if (sends_output()) {
-			_buffer = &dynamic_cast<JackAudioPort*>(_ext_port)->get_audio_buffer();
-		} 
+using namespace ARDOUR;
+using namespace std;
 
-		Port::set_name (_ext_port->name());
-	}
+#define ENGINE AudioEngine::instance()
+#define port_engine AudioEngine::instance()->port_engine()
 
-	reset ();
+AudioPort::AudioPort (const std::string& name, PortFlags flags)
+	: Port (name, DataType::AUDIO, flags)
+	, _buffer (new AudioBuffer (0))
+{
+	assert (name.find_first_of (':') == string::npos);
+	cache_aligned_malloc ((void**) &_data, sizeof (Sample) * 8192);
+	_src.setup (_resampler_quality);
+	_src.set_rrfilt (10);
 }
 
-AudioPort::~AudioPort()
+AudioPort::~AudioPort ()
 {
-	if (_ext_port) {
-		delete _ext_port;
-		_ext_port = 0;
-	}
+	cache_aligned_free (_data);
+	delete _buffer;
 }
 
 void
-AudioPort::reset()
+AudioPort::cycle_start (pframes_t nframes)
 {
-	BaseAudioPort::reset();
-
-	if (_ext_port) {
-		_ext_port->reset ();
+	/* caller must hold process lock */
+	Port::cycle_start (nframes);
+
+	if (sends_output()) {
+		_buffer->prepare ();
+	} else if (!externally_connected ()) {
+		/* ardour internal port, just silence input, don't resample */
+		// TODO reset resampler only once
+		_src.reset ();
+		memset (_data, 0, _cycle_nframes * sizeof (float));
+	} else {
+		_src.inp_data  = (float*)port_engine.get_buffer (_port_handle, nframes);
+		_src.inp_count = nframes;
+		_src.out_count = _cycle_nframes;
+		_src.set_rratio (_cycle_nframes / (double)nframes);
+		_src.out_data  = _data;
+		_src.process ();
+		while (_src.out_count > 0) {
+			*_src.out_data =  _src.out_data[-1];
+			++_src.out_data;
+			--_src.out_count;
+		}
 	}
 }
 
-
 void
-AudioPort::cycle_start (nframes_t nframes, nframes_t offset)
+AudioPort::cycle_end (pframes_t nframes)
 {
-	/* caller must hold process lock */
-
-	if (_ext_port) {
-		_ext_port->cycle_start (nframes, offset);
+	if (sends_output() && !_buffer->written() && _port_handle) {
+		if (!_buffer->data (0)) {
+			get_audio_buffer (nframes);
+		}
+		if (_buffer->capacity() >= nframes) {
+			_buffer->silence (nframes);
+		}
 	}
 
-	if (_flags & IsInput) {
-
-		if (_ext_port) {
-			_buffer->read_from (dynamic_cast<BaseAudioPort*>(_ext_port)->get_audio_buffer(), nframes, offset);
+	if (sends_output() && _port_handle) {
 
-			if (!_connections.empty()) {
-				(*_mixdown) (_connections, _buffer, nframes, offset, false);
-			}
+		if (!externally_connected ()) {
+			/* ardour internal port, data goes nowhere, skip resampling */
+			// TODO reset resampler only once
+			_src.reset ();
+			return;
+		}
 
-		} else {
-		
-			if (_connections.empty()) {
-				_buffer->silence (nframes, offset);
-			} else {
-				(*_mixdown) (_connections, _buffer, nframes, offset, true);
-			}
+		_src.inp_count = _cycle_nframes;
+		_src.out_count = nframes;
+		_src.set_rratio (nframes / (double)_cycle_nframes);
+		_src.inp_data  = _data;
+		_src.out_data  = (float*)port_engine.get_buffer (_port_handle, nframes);
+		_src.process ();
+		while (_src.out_count > 0) {
+			*_src.out_data =  _src.out_data[-1];
+			++_src.out_data;
+			--_src.out_count;
 		}
+	}
+}
+
+void
+AudioPort::cycle_split ()
+{
+}
+
+AudioBuffer&
+AudioPort::get_audio_buffer (pframes_t nframes)
+{
+	/* caller must hold process lock */
+	assert (_port_handle);
 
+	Sample* addr;
+
+	if (!externally_connected ()) {
+		addr = (Sample *) port_engine.get_buffer (_port_handle, nframes);
 	} else {
-		
-		// XXX if we could get the output stage to not purely mix into, but also
-		// to initially overwrite the buffer, we could avoid this silence step.
-		
-		_buffer->silence (nframes, offset);
+		/* _data was read and resampled as necessary in ::cycle_start */
+		addr = &_data[_global_port_buffer_offset];
 	}
+
+	_buffer->set_data (addr, nframes);
+
+	return *_buffer;
 }
 
-void
-AudioPort::cycle_end (nframes_t nframes, nframes_t offset)
+Sample*
+AudioPort::engine_get_whole_audio_buffer ()
 {
+	/* caller must hold process lock */
+	assert (_port_handle);
+	return (Sample *) port_engine.get_buffer (_port_handle, ENGINE->samples_per_cycle());
 }