/*
- 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
*/
#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());
}
projects / ardour.git / blobdiff