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livetrax/libs/ardour/configuration.cc

278 lines
6.4 KiB
C++

/*
Copyright (C) 1999-2006 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 <unistd.h>
#include <cstdio> /* for snprintf, grrr */
#include <pbd/failed_constructor.h>
#include <pbd/xml++.h>
#include <ardour/ardour.h>
#include <ardour/configuration.h>
#include <ardour/diskstream.h>
#include <ardour/destructive_filesource.h>
#include "i18n.h"
using namespace ARDOUR;
using namespace std;
/* this is global so that we do not have to indirect through an object pointer
to reference it.
*/
namespace ARDOUR {
float speed_quietning = 0.251189; // -12dB reduction for ffwd or rewind
}
Configuration::Configuration ()
:
/* construct variables */
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(Type,var,name,value) var (name,value),
#define CONFIG_VARIABLE_SPECIAL(Type,var,name,value,mutator) var (name,value,mutator),
#include "ardour/configuration_vars.h"
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
user_configuration (false)
{
}
Configuration::~Configuration ()
{
}
int
Configuration::load_state ()
{
string rcfile;
/* load system configuration first */
rcfile = find_config_file ("ardour_system.rc");
if (rcfile.length()) {
XMLTree tree;
cerr << string_compose (_("loading system configuration file %1"), rcfile) << endl;
if (!tree.read (rcfile.c_str())) {
error << string_compose(_("Ardour: cannot read system configuration file \"%1\""), rcfile) << endmsg;
return -1;
}
if (set_state (*tree.root())) {
error << string_compose(_("Ardour: system configuration file \"%1\" not loaded successfully."), rcfile) << endmsg;
return -1;
}
}
/* from this point on, all configuration changes are user driven */
user_configuration = true;
/* now load configuration file for user */
rcfile = find_config_file ("ardour.rc");
if (rcfile.length()) {
XMLTree tree;
cerr << string_compose (_("loading user configuration file %1"), rcfile) << endl;
if (!tree.read (rcfile)) {
error << string_compose(_("Ardour: cannot read configuration file \"%1\""), rcfile) << endmsg;
return -1;
}
if (set_state (*tree.root())) {
error << string_compose(_("Ardour: user configuration file \"%1\" not loaded successfully."), rcfile) << endmsg;
return -1;
}
}
return 0;
}
int
Configuration::save_state()
{
XMLTree tree;
string rcfile;
/* Note: this only writes the per-user file, and therefore
only saves variables marked as user-set or modified
*/
rcfile = get_user_ardour_path ();
rcfile += "ardour.rc";
if (rcfile.length()) {
tree.set_root (&state (true));
if (!tree.write (rcfile.c_str())){
error << string_compose (_("Config file %1 not saved"), rcfile) << endmsg;
return -1;
}
}
return 0;
}
XMLNode&
Configuration::get_state ()
{
return state (false);
}
XMLNode&
Configuration::state (bool user_only)
{
XMLNode* root = new XMLNode("Ardour");
LocaleGuard lg (X_("POSIX"));
typedef map<string, MidiPortDescriptor*>::const_iterator CI;
for(CI m = midi_ports.begin(); m != midi_ports.end(); ++m){
root->add_child_nocopy(m->second->get_state());
}
XMLNode* node = new XMLNode("Config");
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(type,var,name,value) \
if (!user_only || var.is_user()) var.add_to_node (*node);
#define CONFIG_VARIABLE_SPECIAL(type,var,name,value,mutator) \
if (!user_only || var.is_user()) var.add_to_node (*node);
#include "ardour/configuration_vars.h"
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
root->add_child_nocopy (*node);
if (_extra_xml) {
root->add_child_copy (*_extra_xml);
}
return *root;
}
int
Configuration::set_state (const XMLNode& root)
{
if (root.name() != "Ardour") {
return -1;
}
XMLNodeList nlist = root.children();
XMLNodeConstIterator niter;
XMLNode *node;
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
node = *niter;
if (node->name() == "MIDI-port") {
try {
pair<string,MidiPortDescriptor*> newpair;
newpair.second = new MidiPortDescriptor (*node);
newpair.first = newpair.second->tag;
midi_ports.insert (newpair);
}
catch (failed_constructor& err) {
warning << _("ill-formed MIDI port specification in ardour rcfile (ignored)") << endmsg;
}
} else if (node->name() == "Config") {
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(type,var,name,value) \
var.set_from_node (*node); \
var.set_is_user (user_configuration);
#define CONFIG_VARIABLE_SPECIAL(type,var,name,value,mutator) \
var.set_from_node (*node); \
var.set_is_user (user_configuration);
#include "ardour/configuration_vars.h"
#undef CONFIG_VARIABLE
#undef CONFIG_VARIABLE_SPECIAL
} else if (node->name() == "extra") {
_extra_xml = new XMLNode (*node);
}
}
DiskStream::set_disk_io_chunk_frames (minimum_disk_io_bytes.get() / sizeof (Sample));
return 0;
}
Configuration::MidiPortDescriptor::MidiPortDescriptor (const XMLNode& node)
{
const XMLProperty *prop;
bool have_tag = false;
bool have_device = false;
bool have_type = false;
bool have_mode = false;
if ((prop = node.property ("tag")) != 0) {
tag = prop->value();
have_tag = true;
}
if ((prop = node.property ("device")) != 0) {
device = prop->value();
have_device = true;
}
if ((prop = node.property ("type")) != 0) {
type = prop->value();
have_type = true;
}
if ((prop = node.property ("mode")) != 0) {
mode = prop->value();
have_mode = true;
}
if (!have_tag || !have_device || !have_type || !have_mode) {
throw failed_constructor();
}
}
XMLNode&
Configuration::MidiPortDescriptor::get_state()
{
XMLNode* root = new XMLNode("MIDI-port");
root->add_property("tag", tag);
root->add_property("device", device);
root->add_property("type", type);
root->add_property("mode", mode);
return *root;
}