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.
22 #include "pbd/error.h"
23 #include "pbd/failed_constructor.h"
25 #include "ardour/amp.h"
26 #include "ardour/internal_send.h"
27 #include "ardour/meter.h"
28 #include "ardour/route.h"
29 #include "ardour/session.h"
34 using namespace ARDOUR;
36 InternalSend::InternalSend (Session& s, boost::shared_ptr<MuteMaster> mm, boost::shared_ptr<Route> sendto)
40 if ((target = _send_to->get_return_buffer ()) == 0) {
41 throw failed_constructor();
44 _send_to->GoingAway.connect (mem_fun (*this, &InternalSend::send_to_going_away));
47 InternalSend::InternalSend (Session& s, boost::shared_ptr<MuteMaster> mm, const XMLNode& node)
48 : Send (s, mm, node, true)
53 InternalSend::~InternalSend ()
56 _send_to->release_return_buffer ();
59 connect_c.disconnect ();
63 InternalSend::send_to_going_away ()
71 InternalSend::run (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame, nframes_t nframes)
73 if (!_active || !target || !_send_to) {
78 // we have to copy the input, because we may alter the buffers with the amp
79 // in-place, which a send must never do.
81 BufferSet& sendbufs = _session.get_mix_buffers (bufs.count());
82 sendbufs.read_from (bufs, nframes);
83 assert(sendbufs.count() == bufs.count());
87 gain_t tgain = target_gain ();
89 if (tgain != _current_gain) {
91 /* target gain has changed */
93 Amp::apply_gain (sendbufs, nframes, _current_gain, tgain);
94 _current_gain = tgain;
96 } else if (tgain == 0.0) {
98 /* we were quiet last time, and we're still supposed to be quiet.
102 Amp::apply_simple_gain (sendbufs, nframes, 0.0);
106 } else if (tgain != 1.0) {
108 /* target gain has not changed, but is not unity */
109 Amp::apply_simple_gain (sendbufs, nframes, tgain);
112 // Can't automate gain for sends or returns yet because we need different buffers
113 // so that we don't overwrite the main automation data for the route amp
114 // _amp->setup_gain_automation (start_frame, end_frame, nframes);
116 _amp->run (sendbufs, start_frame, end_frame, nframes);
118 /* consider metering */
121 if (_amp->gain_control()->get_value() == 0) {
124 _meter->run (sendbufs, start_frame, end_frame, nframes);
128 /* deliver to target */
130 target->merge_from (sendbufs, nframes);
134 InternalSend::feeds (boost::shared_ptr<Route> other) const
136 return _send_to == other;
140 InternalSend::state (bool full)
142 XMLNode& node (Send::state (full));
144 /* this replaces any existing property */
146 node.add_property ("type", "intsend");
149 node.add_property ("target", _send_to->id().to_s());
156 InternalSend::get_state()
162 InternalSend::set_state (const XMLNode& node)
164 const XMLProperty* prop;
166 Send::set_state (node);
168 if ((prop = node.property ("target")) != 0) {
170 _send_to_id = prop->value();
172 /* if we're loading a session, the target route may not have been
173 create yet. make sure we defer till we are sure that it should
177 if (!IO::connecting_legal) {
178 connect_c = IO::ConnectingLegal.connect (mem_fun (*this, &InternalSend::connect_when_legal));
180 connect_when_legal ();
188 InternalSend::connect_when_legal ()
190 connect_c.disconnect ();
192 if (_send_to_id == "0") {
193 /* it vanished before we could connect */
197 if ((_send_to = _session.route_by_id (_send_to_id)) == 0) {
198 error << X_("cannot find route to connect to") << endmsg;
202 if ((target = _send_to->get_return_buffer ()) == 0) {
203 error << X_("target for internal send has no return buffer") << endmsg;
211 InternalSend::can_support_io_configuration (const ChanCount& in, ChanCount& out) const