Paul Davis
a5674e9271
git-svn-id: svn://localhost/ardour2/branches/3.0@9730 d708f5d6-7413-0410-9779-e7cbd77b26cf
149 lines
3.5 KiB
C++
149 lines
3.5 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 <glibmm/thread.h>
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#include "pbd/failed_constructor.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/mute_master.h"
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#include "ardour/session.h"
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#include "ardour/internal_send.h"
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using namespace std;
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using namespace ARDOUR;
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PBD::Signal1<void, pframes_t> InternalReturn::CycleStart;
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InternalReturn::InternalReturn (Session& s)
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: Return (s, true)
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{
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CycleStart.connect_same_thread (*this, boost::bind (&InternalReturn::cycle_start, this, _1));
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_display_to_user = false;
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}
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void
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InternalReturn::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) {
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return;
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}
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/* _sends is only modified with the process lock held, so this is ok, I think */
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for (list<InternalSend*>::iterator i = _sends.begin(); i != _sends.end(); ++i) {
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if ((*i)->active ()) {
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bufs.merge_from ((*i)->get_buffers(), nframes);
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}
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}
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#if 0
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if (_session.transport_rolling()) {
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for (BufferSet::audio_iterator b = bufs.audio_begin(); b != bufs.audio_end(); ++b) {
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Sample* p = b->data ();
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for (pframes_t n = 0; n < nframes; ++n) {
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if (p[n] != 0.0) {
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cerr << "\tnon-zero data received\n";
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break;
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}
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}
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}
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}
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#endif
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_active = _pending_active;
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}
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bool
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InternalReturn::configure_io (ChanCount in, ChanCount out)
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{
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IOProcessor::configure_io (in, out);
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allocate_buffers (_session.engine().frames_per_cycle());
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return true;
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}
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int
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InternalReturn::set_block_size (pframes_t nframes)
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{
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allocate_buffers (nframes);
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return 0;
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}
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void
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InternalReturn::allocate_buffers (pframes_t nframes)
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{
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buffers.ensure_buffers (_configured_input, nframes);
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buffers.set_count (_configured_input);
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}
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void
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InternalReturn::add_send (InternalSend* send)
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{
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Glib::Mutex::Lock lm (_session.engine().process_lock());
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_sends.push_back (send);
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}
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void
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InternalReturn::remove_send (InternalSend* send)
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{
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Glib::Mutex::Lock lm (_session.engine().process_lock());
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_sends.remove (send);
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}
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void
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InternalReturn::cycle_start (pframes_t nframes)
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{
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/* called from process cycle - no lock necessary */
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if (!_sends.empty ()) {
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/* don't bother with this if nobody is going to feed us anything */
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buffers.silence (nframes, 0);
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}
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}
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XMLNode&
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InternalReturn::state (bool full)
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{
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XMLNode& node (Return::state (full));
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/* override type */
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node.add_property("type", "intreturn");
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return node;
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}
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XMLNode&
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InternalReturn::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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InternalReturn::set_state (const XMLNode& node, int version)
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{
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return Return::set_state (node, version);
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}
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bool
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InternalReturn::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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