99904735e0
git-svn-id: svn://localhost/ardour2/branches/midi@1614 d708f5d6-7413-0410-9779-e7cbd77b26cf
167 lines
3.7 KiB
C++
167 lines
3.7 KiB
C++
/*
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Copyright (C) 2000 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 <algorithm>
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#include <pbd/xml++.h>
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#include <ardour/send.h>
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#include <ardour/session.h>
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#include <ardour/port.h>
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#include <ardour/audio_port.h>
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#include <ardour/buffer_set.h>
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#include <ardour/meter.h>
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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Send::Send (Session& s, Placement p)
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: Redirect (s, string_compose (_("send %1"), (bitslot = s.next_send_id()) + 1), p)
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{
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_metering = false;
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RedirectCreated (this); /* EMIT SIGNAL */
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}
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Send::Send (Session& s, const XMLNode& node)
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: Redirect (s, "send", PreFader)
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{
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_metering = false;
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if (set_state (node)) {
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throw failed_constructor();
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}
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RedirectCreated (this); /* EMIT SIGNAL */
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}
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Send::Send (const Send& other)
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: Redirect (other._session, string_compose (_("send %1"), (bitslot = other._session.next_send_id()) + 1), other.placement())
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{
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_metering = false;
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RedirectCreated (this); /* EMIT SIGNAL */
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}
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Send::~Send ()
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{
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GoingAway ();
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}
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XMLNode&
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Send::get_state(void)
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{
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return state (true);
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}
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XMLNode&
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Send::state(bool full)
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{
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XMLNode *node = new XMLNode("Send");
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char buf[32];
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node->add_child_nocopy (Redirect::state (full));
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snprintf (buf, sizeof (buf), "%" PRIu32, bitslot);
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node->add_property ("bitslot", buf);
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return *node;
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}
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int
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Send::set_state(const XMLNode& node)
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{
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XMLNodeList nlist = node.children();
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XMLNodeIterator niter;
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const XMLProperty* prop;
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if ((prop = node.property ("bitslot")) == 0) {
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bitslot = _session.next_send_id();
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} else {
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sscanf (prop->value().c_str(), "%" PRIu32, &bitslot);
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_session.mark_send_id (bitslot);
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}
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/* Send has regular IO automation (gain, pan) */
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((*niter)->name() == Redirect::state_node_name) {
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Redirect::set_state (**niter);
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break;
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} else if ((*niter)->name() == X_("Automation")) {
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IO::set_automation_state (*(*niter));
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}
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}
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if (niter == nlist.end()) {
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error << _("XML node describing a send is missing a Redirect node") << endmsg;
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return -1;
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}
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return 0;
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}
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void
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Send::run (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset)
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{
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if (active()) {
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// we have to copy the input, because IO::deliver_output may alter the buffers
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// in-place, which a send must never do.
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BufferSet& sendbufs = _session.get_send_buffers(bufs.count());
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sendbufs.read_from(bufs, nframes);
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assert(sendbufs.count() == bufs.count());
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IO::deliver_output (sendbufs, start_frame, end_frame, nframes, offset);
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if (_metering) {
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if (_gain == 0) {
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_meter->reset();
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} else {
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_meter->run(output_buffers(), nframes, offset);
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}
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}
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} else {
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silence (nframes, offset);
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if (_metering) {
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_meter->reset();
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}
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}
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}
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void
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Send::set_metering (bool yn)
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{
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_metering = yn;
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if (!_metering) {
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/* XXX possible thread hazard here */
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peak_meter().reset();
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}
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}
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void
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Send::expect_inputs (const ChanCount& expected)
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{
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if (expected != _expected_inputs) {
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_expected_inputs = expected;
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reset_panner ();
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}
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}
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