c40437430a
git-svn-id: svn://localhost/ardour2/branches/3.0@12650 d708f5d6-7413-0410-9779-e7cbd77b26cf
367 lines
8.2 KiB
C++
367 lines
8.2 KiB
C++
/*
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Copyright (C) 2009 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "pbd/error.h"
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#include "pbd/failed_constructor.h"
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#include "ardour/amp.h"
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#include "ardour/audio_buffer.h"
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#include "ardour/internal_return.h"
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#include "ardour/internal_send.h"
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#include "ardour/meter.h"
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#include "ardour/panner_shell.h"
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#include "ardour/route.h"
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#include "ardour/session.h"
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#include "ardour/audioengine.h"
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#include "i18n.h"
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namespace ARDOUR { class MuteMaster; class Pannable; }
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using namespace PBD;
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using namespace ARDOUR;
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using namespace std;
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PBD::Signal1<void, pframes_t> InternalSend::CycleStart;
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InternalSend::InternalSend (Session& s, boost::shared_ptr<Pannable> p, boost::shared_ptr<MuteMaster> mm, boost::shared_ptr<Route> sendto, Delivery::Role role)
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: Send (s, p, mm, role)
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{
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if (sendto) {
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if (use_target (sendto)) {
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throw failed_constructor();
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}
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}
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init_gain ();
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CycleStart.connect_same_thread (*this, boost::bind (&InternalSend::cycle_start, this, _1));
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}
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InternalSend::~InternalSend ()
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{
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if (_send_to) {
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_send_to->remove_send_from_internal_return (this);
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}
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}
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void
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InternalSend::init_gain ()
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{
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if (_role == Listen) {
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/* send to monitor bus is always at unity */
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_amp->set_gain (1.0, this);
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} else {
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/* aux sends start at -inf dB */
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_amp->set_gain (0, this);
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}
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}
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int
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InternalSend::use_target (boost::shared_ptr<Route> sendto)
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{
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if (_send_to) {
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_send_to->remove_send_from_internal_return (this);
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}
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_send_to = sendto;
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_send_to->add_send_to_internal_return (this);
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mixbufs.ensure_buffers (_send_to->internal_return()->input_streams(), _session.get_block_size());
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mixbufs.set_count (_send_to->internal_return()->input_streams());
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reset_panner ();
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set_name (sendto->name());
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_send_to_id = _send_to->id();
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target_connections.drop_connections ();
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_send_to->DropReferences.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_going_away, this));
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_send_to->PropertyChanged.connect_same_thread (target_connections, boost::bind (&InternalSend::send_to_property_changed, this, _1));;
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return 0;
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}
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void
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InternalSend::send_to_going_away ()
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{
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target_connections.drop_connections ();
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_send_to.reset ();
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_send_to_id = "0";
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}
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void
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InternalSend::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool)
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{
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if ((!_active && !_pending_active) || !_send_to) {
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_meter->reset ();
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return;
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}
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// we have to copy the input, because we may alter the buffers with the amp
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// in-place, which a send must never do.
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if (_panshell && !_panshell->bypassed()) {
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_panshell->run (bufs, mixbufs, start_frame, end_frame, nframes);
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} else {
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if (role() == Listen) {
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/* We're going to the monitor bus, so discard MIDI data */
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uint32_t const bufs_audio = bufs.count().get (DataType::AUDIO);
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uint32_t const mixbufs_audio = mixbufs.count().get (DataType::AUDIO);
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assert (mixbufs.available().get (DataType::AUDIO) >= bufs_audio);
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/* Copy bufs into mixbufs, going round bufs more than once if necessary
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to ensure that every mixbuf gets some data.
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*/
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uint32_t j = 0;
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for (uint32_t i = 0; i < mixbufs_audio; ++i) {
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mixbufs.get_audio(i).read_from (bufs.get_audio(j), nframes);
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++j;
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if (j == bufs_audio) {
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j = 0;
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}
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}
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} else {
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assert (mixbufs.available() >= bufs.count());
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mixbufs.read_from (bufs, nframes);
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}
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}
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/* gain control */
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gain_t tgain = target_gain ();
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if (tgain != _current_gain) {
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/* target gain has changed */
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Amp::apply_gain (mixbufs, nframes, _current_gain, tgain);
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_current_gain = tgain;
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} else if (tgain == 0.0) {
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/* we were quiet last time, and we're still supposed to be quiet.
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*/
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_meter->reset ();
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Amp::apply_simple_gain (mixbufs, nframes, 0.0);
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goto out;
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} else if (tgain != 1.0) {
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/* target gain has not changed, but is not zero or unity */
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Amp::apply_simple_gain (mixbufs, nframes, tgain);
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}
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_amp->set_gain_automation_buffer (_session.send_gain_automation_buffer ());
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_amp->setup_gain_automation (start_frame, end_frame, nframes);
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_amp->run (mixbufs, start_frame, end_frame, nframes, true);
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/* consider metering */
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if (_metering) {
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if (_amp->gain_control()->get_value() == 0) {
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_meter->reset();
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} else {
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_meter->run (mixbufs, start_frame, end_frame, nframes, true);
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}
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}
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/* target will pick up our output when it is ready */
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out:
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_active = _pending_active;
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}
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int
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InternalSend::set_block_size (pframes_t nframes)
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{
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if (_send_to) {
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mixbufs.ensure_buffers (_send_to->internal_return()->input_streams(), nframes);
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}
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return 0;
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}
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bool
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InternalSend::feeds (boost::shared_ptr<Route> other) const
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{
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return _send_to == other;
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}
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XMLNode&
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InternalSend::state (bool full)
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{
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XMLNode& node (Send::state (full));
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/* this replaces any existing "type" property */
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node.add_property ("type", "intsend");
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if (_send_to) {
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node.add_property ("target", _send_to->id().to_s());
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}
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return node;
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}
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XMLNode&
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InternalSend::get_state()
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{
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return state (true);
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}
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int
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InternalSend::set_state (const XMLNode& node, int version)
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{
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const XMLProperty* prop;
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init_gain ();
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Send::set_state (node, version);
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if ((prop = node.property ("target")) != 0) {
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_send_to_id = prop->value();
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/* if we're loading a session, the target route may not have been
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create yet. make sure we defer till we are sure that it should
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exist.
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*/
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if (!IO::connecting_legal) {
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IO::ConnectingLegal.connect_same_thread (connect_c, boost::bind (&InternalSend::connect_when_legal, this));
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} else {
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connect_when_legal ();
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}
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}
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return 0;
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}
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int
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InternalSend::connect_when_legal ()
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{
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connect_c.disconnect ();
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if (_send_to_id == "0") {
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/* it vanished before we could connect */
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return 0;
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}
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boost::shared_ptr<Route> sendto;
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if ((sendto = _session.route_by_id (_send_to_id)) == 0) {
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error << string_compose (_("%1 - cannot find any track/bus with the ID %2 to connect to"), display_name(), _send_to_id) << endmsg;
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cerr << string_compose (_("%1 - cannot find any track/bus with the ID %2 to connect to"), display_name(), _send_to_id) << endl;
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return -1;
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}
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return use_target (sendto);
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}
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bool
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InternalSend::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
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{
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out = in;
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return true;
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}
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uint32_t
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InternalSend::pan_outs () const
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{
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/* the number of targets for our panner is determined by what we are
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sending to, if anything.
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*/
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if (_send_to) {
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return _send_to->internal_return()->input_streams().n_audio();
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}
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return 1; /* zero is more accurate, but 1 is probably safer as a way to
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* say "don't pan"
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*/
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}
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bool
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InternalSend::configure_io (ChanCount in, ChanCount out)
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{
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bool ret = Send::configure_io (in, out);
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set_block_size (_session.engine().frames_per_cycle());
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return ret;
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}
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bool
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InternalSend::set_name (const string& str)
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{
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/* rules for external sends don't apply to us */
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return IOProcessor::set_name (str);
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}
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string
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InternalSend::display_name () const
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{
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if (_role == Aux) {
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return string_compose (X_("%1"), _name);
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} else {
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return _name;
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}
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}
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bool
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InternalSend::visible () const
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{
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if (_role == Aux) {
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return true;
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}
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return false;
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}
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void
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InternalSend::send_to_property_changed (const PropertyChange& what_changed)
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{
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if (what_changed.contains (Properties::name)) {
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set_name (_send_to->name ());
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}
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}
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void
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InternalSend::set_can_pan (bool yn)
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{
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if (_panshell) {
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_panshell->set_bypassed (!yn);
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}
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}
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void
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InternalSend::cycle_start (pframes_t /*nframes*/)
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{
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for (BufferSet::audio_iterator b = mixbufs.audio_begin(); b != mixbufs.audio_end(); ++b) {
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b->prepare ();
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}
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}
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