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livetrax/libs/ardour/io_processor.cc
Paul Davis b621b28fce make it possible to (and actually do) name insert and send ports as "return" and "send" rather than "in" and "out" (#5012)
git-svn-id: svn://localhost/ardour2/branches/3.0@13052 d708f5d6-7413-0410-9779-e7cbd77b26cf
2012-07-17 13:59:46 +00:00

321 lines
6.7 KiB
C++

/*
Copyright (C) 2001 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.
*/
#include <list>
#include <string>
#include "pbd/xml++.h"
#include "pbd/enumwriter.h"
#include "ardour/chan_count.h"
#include "ardour/data_type.h"
#include "ardour/io.h"
#include "ardour/io_processor.h"
#include "ardour/processor.h"
#include "ardour/route.h"
#include "ardour/session_object.h"
#include "ardour/types.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
namespace ARDOUR { class Session; }
/* create an IOProcessor that proxies to a new IO object */
IOProcessor::IOProcessor (Session& s, bool with_input, bool with_output,
const string& proc_name, const string io_name, DataType dtype, bool sendish)
: Processor(s, proc_name)
{
/* these are true in this constructor whether we actually create the associated
IO objects or not.
*/
_own_input = true;
_own_output = true;
if (with_input) {
_input.reset (new IO(s, io_name.empty() ? proc_name : io_name, IO::Input, dtype, sendish));
}
if (with_output) {
_output.reset (new IO(s, io_name.empty() ? proc_name : io_name, IO::Output, dtype, sendish));
}
}
/* create an IOProcessor that proxies to an existing IO object */
IOProcessor::IOProcessor (Session& s, boost::shared_ptr<IO> in, boost::shared_ptr<IO> out,
const string& proc_name, DataType /*dtype*/)
: Processor(s, proc_name)
, _input (in)
, _output (out)
{
if (in) {
_own_input = false;
} else {
_own_input = true;
}
if (out) {
_own_output = false;
} else {
_own_output = true;
}
}
IOProcessor::~IOProcessor ()
{
}
void
IOProcessor::set_input (boost::shared_ptr<IO> io)
{
/* CALLER MUST HOLD PROCESS LOCK */
_input = io;
_own_input = false;
}
void
IOProcessor::set_output (boost::shared_ptr<IO> io)
{
/* CALLER MUST HOLD PROCESS LOCK */
_output = io;
_own_output = false;
}
XMLNode&
IOProcessor::state (bool full_state)
{
XMLNode& node (Processor::state (full_state));
if (_own_input) {
node.add_property ("own-input", "yes");
if (_input) {
XMLNode& i (_input->state (full_state));
// i.name() = X_("output");
node.add_child_nocopy (i);
}
} else {
node.add_property ("own-input", "no");
if (_input) {
node.add_property ("input", _input->name());
}
}
if (_own_output) {
node.add_property ("own-output", "yes");
if (_output) {
XMLNode& o (_output->state (full_state));
node.add_child_nocopy (o);
}
} else {
node.add_property ("own-output", "no");
if (_output) {
node.add_property ("output", _output->name());
}
}
return node;
}
int
IOProcessor::set_state (const XMLNode& node, int version)
{
if (version < 3000) {
return set_state_2X (node, version);
}
const XMLProperty *prop;
const XMLNode *io_node = 0;
Processor::set_state(node, version);
if ((prop = node.property ("own-input")) != 0) {
_own_input = string_is_affirmative (prop->value());
}
if ((prop = node.property ("own-output")) != 0) {
_own_output = string_is_affirmative (prop->value());
}
/* don't attempt to set state for a proxied IO that we don't own */
XMLNodeList nlist = node.children();
XMLNodeIterator niter;
const string instr = enum_2_string (IO::Input);
const string outstr = enum_2_string (IO::Output);
if (_own_input) {
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
const XMLProperty* prop;
if ((prop = (*niter)->property ("name")) != 0) {
if (_name == prop->value()) {
if ((prop = (*niter)->property ("direction")) != 0) {
if (prop->value() == instr) {
io_node = (*niter);
break;
}
}
}
}
}
if (io_node) {
_input->set_state(*io_node, version);
// legacy sessions: use IO name
if ((prop = node.property ("name")) == 0) {
set_name (_input->name());
}
} else {
/* no input, which is OK */
}
}
if (_own_output) {
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((*niter)->name() == "IO") {
const XMLProperty* prop;
if ((prop = (*niter)->property ("name")) != 0) {
if (_name == prop->value()) {
if ((prop = (*niter)->property ("direction")) != 0) {
if (prop->value() == outstr) {
io_node = (*niter);
break;
}
}
}
}
}
}
if (io_node) {
_output->set_state(*io_node, version);
// legacy sessions: use IO name
if ((prop = node.property ("name")) == 0) {
set_name (_output->name());
}
} else {
/* no output, which is OK */
}
}
return 0;
}
int
IOProcessor::set_state_2X (const XMLNode& node, int version)
{
_own_input = _own_output = true;
Processor::set_state_2X (node, version);
return 0;
}
void
IOProcessor::silence (framecnt_t nframes)
{
if (_own_output && _output) {
_output->silence (nframes);
}
}
void
IOProcessor::increment_port_buffer_offset (pframes_t offset)
{
if (_own_output && _output) {
_output->increment_port_buffer_offset (offset);
}
}
ChanCount
IOProcessor::natural_output_streams() const
{
return _output ? _output->n_ports() : ChanCount::ZERO;
}
ChanCount
IOProcessor::natural_input_streams () const
{
return _input ? _input->n_ports() : ChanCount::ZERO;
}
bool
IOProcessor::set_name (const std::string& name)
{
bool ret = SessionObject::set_name (name);
if (ret && _own_input && _input) {
ret = _input->set_name (name);
}
if (ret && _own_output && _output) {
ret = _output->set_name (name);
}
return ret;
}
bool
IOProcessor::feeds (boost::shared_ptr<Route> other) const
{
return _output && _output->connected_to (other->input());
}
void
IOProcessor::disconnect ()
{
if (_input) {
_input->disconnect (this);
}
if (_output) {
_output->disconnect (this);
}
}
/** Set up the XML description of a send so that we will not
* reset its name or bitslot during ::set_state()
* @param state XML send state.
* @param session Session.
*/
void
IOProcessor::prepare_for_reset (XMLNode &state, const std::string& name)
{
state.add_property ("ignore-bitslot", "1");
state.add_property ("ignore-name", "1");
XMLNode* io_node = state.child (IO::state_node_name.c_str());
if (io_node) {
IO::prepare_for_reset (*io_node, name);
}
}