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/*
Copyright (C) 2011 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 <unistd.h>
#include <glibmm/pattern.h>
#include <glibmm/fileutils.h>
#include "pbd/error.h"
#include "pbd/compose.h"
#include "pbd/file_utils.h"
#include "ardour/debug.h"
#include "ardour/panner_manager.h"
#ifdef SearchPath
#undef SearchPath
#endif
#include "ardour/panner_search_path.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
PannerManager* PannerManager::_instance = 0;
PannerManager::PannerManager ()
{
}
PannerManager::~PannerManager ()
{
for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
delete *p;
}
}
PannerManager&
PannerManager::instance ()
{
if (_instance == 0) {
_instance = new PannerManager ();
}
return *_instance;
}
void
PannerManager::discover_panners ()
{
vector<std::string> panner_modules;
Glib::PatternSpec so_extension_pattern("*.so");
Glib::PatternSpec dylib_extension_pattern("*.dylib");
find_matching_files_in_search_path (panner_search_path (),
so_extension_pattern, panner_modules);
find_matching_files_in_search_path (panner_search_path (),
dylib_extension_pattern, panner_modules);
DEBUG_TRACE (DEBUG::Panning, string_compose (_("looking for panners in %1"), panner_search_path().to_string()));
for (vector<std::string>::iterator i = panner_modules.begin(); i != panner_modules.end(); ++i) {
panner_discover (*i);
}
}
int
PannerManager::panner_discover (string path)
{
PannerInfo* pinfo;
if ((pinfo = get_descriptor (path)) != 0) {
list<PannerInfo*>::iterator i;
for (i = panner_info.begin(); i != panner_info.end(); ++i) {
if (pinfo->descriptor.name == (*i)->descriptor.name) {
break;
}
}
if (i == panner_info.end()) {
panner_info.push_back (pinfo);
DEBUG_TRACE (DEBUG::Panning, string_compose(_("Panner discovered: \"%1\" in %2"), pinfo->descriptor.name, path));
}
}
return 0;
}
PannerInfo*
PannerManager::get_descriptor (string path)
{
Glib::Module* module = new Glib::Module(path);
PannerInfo* info = 0;
PanPluginDescriptor *descriptor = 0;
PanPluginDescriptor* (*dfunc)(void);
void* func = 0;
if (!module) {
error << string_compose(_("PannerManager: cannot load module \"%1\" (%2)"), path,
Glib::Module::get_last_error()) << endmsg;
delete module;
return 0;
}
if (!module->get_symbol("panner_descriptor", func)) {
error << string_compose(_("PannerManager: module \"%1\" has no descriptor function."), path) << endmsg;
error << Glib::Module::get_last_error() << endmsg;
delete module;
return 0;
}
dfunc = (PanPluginDescriptor* (*)(void))func;
descriptor = dfunc();
if (descriptor) {
info = new PannerInfo (*descriptor, module);
} else {
delete module;
}
return info;
}
PannerInfo*
PannerManager::select_panner (ChanCount in, ChanCount out)
{
PanPluginDescriptor* d;
int32_t nin = in.n_audio();
int32_t nout = out.n_audio();
/* look for exact match first */
for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
d = &(*p)->descriptor;
if (d->in == nin && d->out == nout) {
return *p;
}
}
/* no exact match, look for good fit on inputs and variable on outputs */
for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
d = &(*p)->descriptor;
if (d->in == nin && d->out == -1) {
return *p;
}
}
/* no exact match, look for good fit on outputs and variable on inputs */
for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
d = &(*p)->descriptor;
if (d->in == -1 && d->out == nout) {
return *p;
}
}
/* no exact match, look for variable fit on inputs and outputs */
for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
d = &(*p)->descriptor;
if (d->in == -1 && d->out == -1) {
return *p;
}
}
warning << string_compose (_("no panner discovered for in/out = %1/%2"), nin, nout) << endmsg;
return 0;
}
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