*/
#include <cassert>
-#include <ardour/audio_port.h>
-#include <ardour/audioengine.h>
-#include <ardour/data_type.h>
-#include <ardour/audio_buffer.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;
AudioPort::AudioPort (const std::string& name, Flags flags)
: Port (name, DataType::AUDIO, flags)
- , _buffer_data_set (false)
, _buffer (new AudioBuffer (0))
{
assert (name.find_first_of (':') == string::npos);
}
void
-AudioPort::cycle_start (nframes_t nframes, nframes_t offset)
+AudioPort::cycle_start (nframes_t nframes)
{
/* caller must hold process lock */
happen when Port::get_buffer() is called.
*/
- if (sends_output() && !_buffer_data_set) {
-
- _buffer->set_data ((Sample *) jack_port_get_buffer (_jack_port, nframes) + offset, nframes);
- _buffer_data_set = true;
-
+ 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 ();
}
+}
- if (receives_input()) {
- _buffer_data_set = false;
- } else {
- _buffer->silence (nframes, offset);
+void
+AudioPort::cycle_end (nframes_t nframes)
+{
+ if (sends_output() && !_buffer->written()) {
+ _buffer->silence (nframes);
}
}
-AudioBuffer &
+void
+AudioPort::cycle_split ()
+{
+}
+
+AudioBuffer&
AudioPort::get_audio_buffer (nframes_t nframes, nframes_t offset)
{
/* caller must hold process lock */
- if (receives_input () && !_buffer_data_set) {
+ 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, nframes);
-
+ _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;
}
-void
-AudioPort::cycle_end (nframes_t nframes, nframes_t offset)
+size_t
+AudioPort::raw_buffer_size(nframes_t nframes) const
{
- _buffer_data_set = false;
+ return nframes * sizeof(float);
}
+