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