2 Copyright (C) 2009 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "pbd/error.h"
21 #include "pbd/failed_constructor.h"
23 #include "ardour/amp.h"
24 #include "ardour/audio_buffer.h"
25 #include "ardour/internal_return.h"
26 #include "ardour/internal_send.h"
27 #include "ardour/meter.h"
28 #include "ardour/panner.h"
29 #include "ardour/panner_shell.h"
30 #include "ardour/route.h"
31 #include "ardour/session.h"
32 #include "ardour/audioengine.h"
37 using namespace ARDOUR;
40 InternalSend::InternalSend (Session& s, boost::shared_ptr<Pannable> p, boost::shared_ptr<MuteMaster> mm, boost::shared_ptr<Route> sendto, Delivery::Role role)
41 : Send (s, p, mm, role)
44 if (use_target (sendto)) {
45 throw failed_constructor();
52 InternalSend::~InternalSend ()
55 _send_to->remove_send_from_internal_return (this);
60 InternalSend::init_gain ()
62 if (_role == Listen) {
63 /* send to monitor bus is always at unity */
64 _amp->set_gain (1.0, this);
66 /* aux sends start at -inf dB */
67 _amp->set_gain (0, this);
72 InternalSend::use_target (boost::shared_ptr<Route> sendto)
75 _send_to->remove_send_from_internal_return (this);
80 _send_to->add_send_to_internal_return (this);
82 mixbufs.ensure_buffers (_send_to->internal_return()->input_streams(), _session.get_block_size());
83 mixbufs.set_count (_send_to->internal_return()->input_streams());
87 set_name (sendto->name());
88 _send_to_id = _send_to->id();
90 target_connections.drop_connections ();
92 _send_to->DropReferences.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_going_away, this));
93 _send_to->PropertyChanged.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_property_changed, this, _1));;
99 InternalSend::send_to_going_away ()
101 target_connections.drop_connections ();
107 InternalSend::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
109 if ((!_active && !_pending_active) || !_send_to) {
114 // we have to copy the input, because we may alter the buffers with the amp
115 // in-place, which a send must never do.
117 if (_panshell && !_panshell->bypassed()) {
118 _panshell->run (bufs, mixbufs, start_frame, end_frame, nframes);
120 if (role() == Listen) {
121 /* We're going to the monitor bus, so discard MIDI data */
123 uint32_t const bufs_audio = bufs.count().get (DataType::AUDIO);
124 uint32_t const mixbufs_audio = mixbufs.count().get (DataType::AUDIO);
126 assert (mixbufs.available().get (DataType::AUDIO) >= bufs_audio);
128 /* Copy bufs into mixbufs, going round bufs more than once if necessary
129 to ensure that every mixbuf gets some data.
133 for (uint32_t i = 0; i < mixbufs_audio; ++i) {
134 mixbufs.get_audio(i).read_from (bufs.get_audio(j), nframes);
137 if (j == bufs_audio) {
143 assert (mixbufs.available() >= bufs.count());
144 mixbufs.read_from (bufs, nframes);
150 gain_t tgain = target_gain ();
152 if (tgain != _current_gain) {
154 /* target gain has changed */
156 Amp::apply_gain (mixbufs, nframes, _current_gain, tgain);
157 _current_gain = tgain;
159 } else if (tgain == 0.0) {
161 /* we were quiet last time, and we're still supposed to be quiet.
165 Amp::apply_simple_gain (mixbufs, nframes, 0.0);
168 } else if (tgain != 1.0) {
170 /* target gain has not changed, but is not zero or unity */
171 Amp::apply_simple_gain (mixbufs, nframes, tgain);
174 // Can't automate gain for sends or returns yet because we need different buffers
175 // so that we don't overwrite the main automation data for the route amp
176 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
178 _amp->run (mixbufs, start_frame, end_frame, nframes, true);
180 /* consider metering */
183 if (_amp->gain_control()->get_value() == 0) {
186 _meter->run (mixbufs, start_frame, end_frame, nframes, true);
190 /* target will pick up our output when it is ready */
193 _active = _pending_active;
197 InternalSend::set_block_size (pframes_t nframes)
200 mixbufs.ensure_buffers (_send_to->internal_return()->input_streams(), nframes);
207 InternalSend::feeds (boost::shared_ptr<Route> other) const
209 return _send_to == other;
213 InternalSend::state (bool full)
215 XMLNode& node (Send::state (full));
217 /* this replaces any existing "type" property */
219 node.add_property ("type", "intsend");
222 node.add_property ("target", _send_to->id().to_s());
229 InternalSend::get_state()
235 InternalSend::set_state (const XMLNode& node, int version)
237 const XMLProperty* prop;
241 Send::set_state (node, version);
243 if ((prop = node.property ("target")) != 0) {
245 _send_to_id = prop->value();
247 /* if we're loading a session, the target route may not have been
248 create yet. make sure we defer till we are sure that it should
252 if (!IO::connecting_legal) {
253 IO::ConnectingLegal.connect_same_thread (connect_c, boost::bind (&InternalSend::connect_when_legal, this));
255 connect_when_legal ();
263 InternalSend::connect_when_legal ()
265 connect_c.disconnect ();
267 if (_send_to_id == "0") {
268 /* it vanished before we could connect */
272 boost::shared_ptr<Route> sendto;
274 if ((sendto = _session.route_by_id (_send_to_id)) == 0) {
275 error << X_("cannot find route to connect to") << endmsg;
279 return use_target (sendto);
283 InternalSend::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
290 InternalSend::pan_outs () const
292 /* the number of targets for our panner is determined by what we are
293 sending to, if anything.
297 return _send_to->internal_return()->input_streams().n_audio();
300 return 1; /* zero is more accurate, but 1 is probably safer as a way to
306 InternalSend::configure_io (ChanCount in, ChanCount out)
308 bool ret = Send::configure_io (in, out);
309 set_block_size (_session.engine().frames_per_cycle());
314 InternalSend::set_name (const string& str)
316 /* rules for external sends don't apply to us */
317 return IOProcessor::set_name (str);
321 InternalSend::display_name () const
324 return string_compose (X_("aux-%1"), _name);
331 InternalSend::visible () const
341 InternalSend::send_to_property_changed (const PropertyChange& what_changed)
343 if (what_changed.contains (Properties::name)) {
344 set_name (_send_to->name ());
349 InternalSend::set_can_pan (bool yn)
352 _panshell->set_bypassed (!yn);
357 InternalSend::cycle_start (pframes_t nframes)
359 Delivery::cycle_start (nframes);
361 for (BufferSet::audio_iterator b = mixbufs.audio_begin(); b != mixbufs.audio_end(); ++b) {