*/
#include <cassert>
-#include <ardour/audio_port.h>
-#include <ardour/data_type.h>
+#include "ardour/audio_port.h"
+#include "ardour/audioengine.h"
+#include "ardour/data_type.h"
+#include "ardour/audio_buffer.h"
using namespace ARDOUR;
using namespace std;
-jack_nframes_t AudioPort::_short_over_length = 2;
-jack_nframes_t AudioPort::_long_over_length = 10;
+AudioPort::AudioPort (const std::string& name, Flags flags)
+ : Port (name, DataType::AUDIO, flags)
+ , _buffer (new AudioBuffer (0))
+{
+ assert (name.find_first_of (':') == string::npos);
+}
-AudioPort::AudioPort(jack_port_t* p)
- : Port(p)
- , _buffer(0)
+AudioPort::~AudioPort ()
{
- DataType dt(_type);
- assert(dt == DataType::AUDIO);
-
- reset();
+ delete _buffer;
}
void
-AudioPort::reset()
+AudioPort::cycle_start (nframes_t nframes)
{
- Port::reset();
- if (_flags & JackPortIsOutput) {
- if (_buffer.capacity() > 0) {
- _buffer.clear();
- }
- _silent = true;
+ /* 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.
+ */
+
+ 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 ();
}
-
- _metering = 0;
- reset_meters ();
}
void
-AudioPort::cycle_start (jack_nframes_t nframes)
+AudioPort::cycle_end (nframes_t nframes)
{
- if (_flags & JackPortIsOutput) {
- // FIXME: do nothing, we can cache the value (but capacity needs to be set)
- _buffer.set_data((Sample*)jack_port_get_buffer (_port, nframes), nframes);
- } else {
- _buffer.set_data((Sample*)jack_port_get_buffer (_port, nframes), nframes);
+ if (sends_output() && !_buffer->written()) {
+ _buffer->silence (nframes);
}
}
void
-AudioPort::cycle_end()
+AudioPort::cycle_split ()
+{
+}
+
+AudioBuffer&
+AudioPort::get_audio_buffer (nframes_t nframes, nframes_t offset)
{
- // whatever...
+ /* caller must hold process lock */
+
+ if (receives_input ()) {
+
+ /* 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.
+ */
+
+ _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()
+ */
+
+ return *_buffer;
}
+
+size_t
+AudioPort::raw_buffer_size(nframes_t nframes) const
+{
+ return nframes * sizeof(float);
+}
+