#include <cassert>
+#include "pbd/malign.h"
#include "pbd/stacktrace.h"
#include "ardour/audio_buffer.h"
using namespace ARDOUR;
using namespace std;
+#define ENGINE AudioEngine::instance()
#define port_engine AudioEngine::instance()->port_engine()
AudioPort::AudioPort (const std::string& name, PortFlags 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;
}
AudioPort::cycle_start (pframes_t nframes)
{
/* caller must hold process lock */
-
- Port::cycle_start (nframes);
+ 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_end (pframes_t)
+AudioPort::cycle_end (pframes_t nframes)
{
- if (sends_output() && !_buffer->written()) {
- /* we can't use nframes here because the current buffer capacity may
- be shorter than the full buffer size if we split the cycle.
- */
- if (_buffer->capacity () > 0) {
- _buffer->silence (_buffer->capacity());
+ 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;
}
}
}
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);
+ assert (_port_handle);
+
+ Sample* addr;
+
+ 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 (addr, nframes);
+
return *_buffer;
}
-Sample*
+Sample*
AudioPort::engine_get_whole_audio_buffer ()
{
/* caller must hold process lock */
- return (Sample *) port_engine.get_buffer (_port_handle, _cycle_nframes);
+ assert (_port_handle);
+ return (Sample *) port_engine.get_buffer (_port_handle, ENGINE->samples_per_cycle());
}
-
-
-
-