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/internal_send.h"
25 #include "ardour/meter.h"
26 #include "ardour/route.h"
27 #include "ardour/session.h"
32 using namespace ARDOUR;
35 InternalSend::InternalSend (Session& s, boost::shared_ptr<MuteMaster> mm, boost::shared_ptr<Route> sendto, Delivery::Role role)
40 if (use_target (sendto)) {
41 throw failed_constructor();
46 InternalSend::~InternalSend ()
49 _send_to->release_return_buffer ();
54 InternalSend::use_target (boost::shared_ptr<Route> sendto)
58 if ((target = _send_to->get_return_buffer ()) == 0) {
62 set_name (sendto->name());
63 _send_to_id = _send_to->id();
65 target_connections.drop_connections ();
67 _send_to->DropReferences.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_going_away, this));
68 _send_to->PropertyChanged.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_property_changed, this, _1));;
75 InternalSend::send_to_going_away ()
78 target_connections.drop_connections ();
84 InternalSend::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, nframes_t nframes, bool)
86 if ((!_active && !_pending_active) || !target || !_send_to) {
91 // we have to copy the input, because we may alter the buffers with the amp
92 // in-place, which a send must never do.
94 assert(mixbufs.available() >= bufs.count());
95 mixbufs.read_from (bufs, nframes);
99 gain_t tgain = target_gain ();
101 if (tgain != _current_gain) {
103 /* target gain has changed */
105 Amp::apply_gain (mixbufs, nframes, _current_gain, tgain);
106 _current_gain = tgain;
108 } else if (tgain == 0.0) {
110 /* we were quiet last time, and we're still supposed to be quiet.
114 Amp::apply_simple_gain (mixbufs, nframes, 0.0);
117 } else if (tgain != 1.0) {
119 /* target gain has not changed, but is not zero or unity */
120 Amp::apply_simple_gain (mixbufs, nframes, tgain);
123 // Can't automate gain for sends or returns yet because we need different buffers
124 // so that we don't overwrite the main automation data for the route amp
125 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
127 _amp->run (mixbufs, start_frame, end_frame, nframes, true);
129 /* XXX NEED TO PAN */
131 /* consider metering */
134 if (_amp->gain_control()->get_value() == 0) {
137 _meter->run (mixbufs, start_frame, end_frame, nframes, true);
141 /* deliver to target */
143 target->merge_from (mixbufs, nframes);
146 _active = _pending_active;
150 InternalSend::set_block_size (nframes_t nframes)
152 mixbufs.ensure_buffers (_configured_input, nframes);
154 /* ensure that our target can cope with us merging this many frames to it */
156 target->ensure_buffers (_configured_input, nframes);
162 InternalSend::feeds (boost::shared_ptr<Route> other) const
164 return _send_to == other;
168 InternalSend::state (bool full)
170 XMLNode& node (Send::state (full));
172 /* this replaces any existing "type" property */
174 node.add_property ("type", "intsend");
177 node.add_property ("target", _send_to->id().to_s());
184 InternalSend::get_state()
190 InternalSend::set_our_state (const XMLNode& node, int /*version*/)
192 const XMLProperty* prop;
194 if ((prop = node.property ("target")) != 0) {
196 _send_to_id = prop->value();
198 /* if we're loading a session, the target route may not have been
199 create yet. make sure we defer till we are sure that it should
203 if (!IO::connecting_legal) {
204 IO::ConnectingLegal.connect_same_thread (connect_c, boost::bind (&InternalSend::connect_when_legal, this));
206 connect_when_legal ();
214 InternalSend::set_state (const XMLNode& node, int version)
216 Send::set_state (node, version);
217 return set_our_state (node, version);
221 InternalSend::connect_when_legal ()
223 connect_c.disconnect ();
225 if (_send_to_id == "0") {
226 /* it vanished before we could connect */
230 boost::shared_ptr<Route> sendto;
232 if ((sendto = _session.route_by_id (_send_to_id)) == 0) {
233 error << X_("cannot find route to connect to") << endmsg;
237 return use_target (sendto);
241 InternalSend::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
248 InternalSend::configure_io (ChanCount in, ChanCount out)
250 bool ret = Send::configure_io (in, out);
251 set_block_size (_session.engine().frames_per_cycle());
256 InternalSend::set_name (const string& str)
258 /* rules for external sends don't apply to us */
259 return IOProcessor::set_name (str);
263 InternalSend::display_name () const
266 return string_compose (X_("aux-%1"), _name);
273 InternalSend::visible () const
283 InternalSend::send_to_property_changed (const PropertyChange& what_changed)
285 if (what_changed.contains (Properties::name)) {
286 set_name (_send_to->name ());