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/*
Copyright (C) 2000 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <algorithm>
#include <pbd/xml++.h>
#include <ardour/send.h>
#include <ardour/session.h>
#include <ardour/port.h>
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
Send::Send (Session& s, Placement p)
: Redirect (s, s.next_send_name(), p)
{
_metering = false;
expected_inputs = 0;
#ifdef STATE_MANAGER
save_state (_("initial state"));
#endif
RedirectCreated (this); /* EMIT SIGNAL */
}
Send::Send (Session& s, const XMLNode& node)
: Redirect (s, "send", PreFader)
{
_metering = false;
expected_inputs = 0;
if (set_state (node)) {
throw failed_constructor();
}
#ifdef STATE_MANAGER
save_state (_("initial state"));
#endif
RedirectCreated (this); /* EMIT SIGNAL */
}
Send::Send (const Send& other)
: Redirect (other._session, other._session.next_send_name(), other.placement())
{
_metering = false;
expected_inputs = 0;
#ifdef STATE_MANAGER
save_state (_("initial state"));
#endif
RedirectCreated (this); /* EMIT SIGNAL */
}
Send::~Send ()
{
GoingAway ();
}
XMLNode&
Send::get_state(void)
{
return state (true);
}
XMLNode&
Send::state(bool full)
{
XMLNode *node = new XMLNode("Send");
node->add_child_nocopy (Redirect::state(full));
return *node;
}
int
Send::set_state(const XMLNode& node)
{
XMLNodeList nlist = node.children();
XMLNodeIterator niter;
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((*niter)->name() == Redirect::state_node_name) {
Redirect::set_state (**niter);
break;
}
}
if (niter == nlist.end()) {
error << _("XML node describing a send is missing a Redirect node") << endmsg;
return -1;
}
return 0;
}
void
Send::run (vector<Sample *>& bufs, uint32_t nbufs, nframes_t nframes, nframes_t offset)
{
if (active()) {
// we have to copy the input, because IO::deliver_output may alter the buffers
// in-place, which a send must never do.
vector<Sample*>& sendbufs = _session.get_send_buffers();
for (size_t i=0; i < nbufs; ++i) {
memcpy (sendbufs[i], bufs[i], sizeof (Sample) * nframes);
}
IO::deliver_output (sendbufs, nbufs, nframes, offset);
if (_metering) {
uint32_t n;
uint32_t no = n_outputs();
if (_gain == 0) {
for (n = 0; n < no; ++n) {
_peak_power[n] = 0;
}
} else {
for (n = 0; n < no; ++n) {
_peak_power[n] = Session::compute_peak (output(n)->get_buffer(nframes) + offset, nframes, _peak_power[n]);
}
}
}
} else {
silence (nframes, offset);
if (_metering) {
uint32_t n;
uint32_t no = n_outputs();
for (n = 0; n < no; ++n) {
_peak_power[n] = 0;
}
}
}
}
void
Send::set_metering (bool yn)
{
_metering = yn;
if (!_metering) {
/* XXX possible thread hazard here */
reset_peak_meters ();
}
}
void
Send::expect_inputs (uint32_t expected)
{
if (expected != expected_inputs) {
expected_inputs = expected;
reset_panner ();
}
}
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