/*
- 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 "pbd/malign.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/audio_buffer.h"
+#include "ardour/port_engine.h"
using namespace ARDOUR;
using namespace std;
-AudioPort::AudioPort (const std::string& name, Flags flags)
+#define ENGINE AudioEngine::instance()
+#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);
+ cache_aligned_malloc ((void**) &_data, sizeof (Sample) * 8192);
+ _src.setup (_resampler_quality);
+ _src.set_rrfilt (10);
}
AudioPort::~AudioPort ()
{
+ cache_aligned_free (_data);
delete _buffer;
}
void
-AudioPort::cycle_start (nframes_t nframes)
+AudioPort::cycle_start (pframes_t nframes)
{
/* caller must hold process lock */
-
- /* get_buffer() must only be run on outputs here in cycle_start().
-
- Inputs must be done in the correct processing order, which
- requires interleaving with route processing. that will
- happen when Port::get_buffer() is called.
- */
+ Port::cycle_start (nframes);
if (sends_output()) {
-
- /* Notice that cycle_start() is always run with the *entire* process cycle frame count,
- so we do not bother to apply _port_offset here - we always want the address of the
- entire JACK port buffer. We are not collecting data here - just noting the
- address where we will write data later in the process cycle.
- */
-
- _buffer->set_data ((Sample *) jack_port_get_buffer (_jack_port, nframes), nframes);
_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_end (nframes_t nframes)
+AudioPort::cycle_end (pframes_t nframes)
{
- if (sends_output() && !_buffer->written()) {
- _buffer->silence (nframes);
+ if (sends_output() && !_buffer->written() && _port_handle) {
+ if (!_buffer->data (0)) {
+ get_audio_buffer (nframes);
+ }
+ if (_buffer->capacity() >= nframes) {
+ _buffer->silence (nframes);
+ }
+ }
+
+ if (sends_output() && _port_handle) {
+
+ if (!externally_connected ()) {
+ /* ardour internal port, data goes nowhere, skip resampling */
+ // TODO reset resampler only once
+ _src.reset ();
+ return;
+ }
+
+ _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;
+ }
}
}
}
AudioBuffer&
-AudioPort::get_audio_buffer (nframes_t nframes, nframes_t offset)
+AudioPort::get_audio_buffer (pframes_t nframes)
{
/* caller must hold process lock */
+ assert (_port_handle);
- if (receives_input ()) {
+ Sample* addr;
- /* Get a pointer to the audio data @ offset + _port_offset within the JACK port buffer and store
- it in our _buffer member.
-
- Note that offset is expected to be zero in almost all cases.
- */
+ if (!externally_connected ()) {
+ addr = (Sample *) port_engine.get_buffer (_port_handle, nframes);
+ } else {
+ /* _data was read and resampled as necessary in ::cycle_start */
+ addr = &_data[_global_port_buffer_offset];
+ }
- _buffer->set_data ((Sample *) jack_port_get_buffer (_jack_port, nframes) + offset + _port_offset, nframes);
- }
-
- /* output ports set their _buffer data information during ::cycle_start()
- */
+ _buffer->set_data (addr, nframes);
return *_buffer;
}
-size_t
-AudioPort::raw_buffer_size(nframes_t nframes) const
+Sample*
+AudioPort::engine_get_whole_audio_buffer ()
{
- return nframes * sizeof(float);
+ /* caller must hold process lock */
+ assert (_port_handle);
+ return (Sample *) port_engine.get_buffer (_port_handle, ENGINE->samples_per_cycle());
}
-