Paul Davis
92add245d0
git-svn-id: svn://localhost/ardour2/branches/3.0@8595 d708f5d6-7413-0410-9779-e7cbd77b26cf
154 lines
4.0 KiB
C++
154 lines
4.0 KiB
C++
#include <glibmm/pattern.h>
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#include "pbd/error.h"
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#include "pbd/compose.h"
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#include "pbd/file_utils.h"
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#include "ardour/panner_manager.h"
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#include "ardour/panner_search_path.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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PannerManager* PannerManager::_instance = 0;
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PannerManager::PannerManager ()
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{
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}
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PannerManager::~PannerManager ()
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{
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for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
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delete *p;
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}
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}
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PannerManager&
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PannerManager::instance ()
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{
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if (_instance == 0) {
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_instance = new PannerManager ();
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}
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return *_instance;
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}
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void
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PannerManager::discover_panners ()
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{
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vector<sys::path> panner_modules;
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Glib::PatternSpec so_extension_pattern("*.so");
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Glib::PatternSpec dylib_extension_pattern("*.dylib");
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find_matching_files_in_search_path (panner_search_path (),
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so_extension_pattern, panner_modules);
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find_matching_files_in_search_path (panner_search_path (),
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dylib_extension_pattern, panner_modules);
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info << string_compose (_("looking for panners in %1"), panner_search_path().to_string()) << endmsg;
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for (vector<sys::path>::iterator i = panner_modules.begin(); i != panner_modules.end(); ++i) {
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panner_discover ((*i).to_string());
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}
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}
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int
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PannerManager::panner_discover (string path)
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{
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PannerInfo* pinfo;
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if ((pinfo = get_descriptor (path)) != 0) {
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panner_info.push_back (pinfo);
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info << string_compose(_("Panner discovered: \"%1\""), pinfo->descriptor.name) << endmsg;
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}
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return 0;
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}
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PannerInfo*
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PannerManager::get_descriptor (string path)
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{
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void *module;
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PannerInfo* info = 0;
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PanPluginDescriptor *descriptor = 0;
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PanPluginDescriptor* (*dfunc)(void);
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const char *errstr;
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if ((module = dlopen (path.c_str(), RTLD_NOW)) == 0) {
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error << string_compose(_("PannerManager: cannot load module \"%1\" (%2)"), path, dlerror()) << endmsg;
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return 0;
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}
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dfunc = (PanPluginDescriptor* (*)(void)) dlsym (module, "panner_descriptor");
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if ((errstr = dlerror()) != 0) {
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error << string_compose(_("PannerManager: module \"%1\" has no descriptor function."), path) << endmsg;
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error << errstr << endmsg;
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dlclose (module);
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return 0;
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}
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descriptor = dfunc();
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if (descriptor) {
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info = new PannerInfo (*descriptor, module);
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} else {
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dlclose (module);
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}
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return info;
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}
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PannerInfo*
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PannerManager::select_panner (ChanCount in, ChanCount out)
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{
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PanPluginDescriptor* d;
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int32_t nin = in.n_audio();
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int32_t nout = out.n_audio();
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/* look for exact match first */
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for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
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d = &(*p)->descriptor;
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if (d->in == nin && d->out == nout) {
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return *p;
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}
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}
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/* no exact match, look for good fit on inputs and variable on outputs */
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for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
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d = &(*p)->descriptor;
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if (d->in == nin && d->out == -1) {
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return *p;
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}
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}
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/* no exact match, look for good fit on outputs and variable on inputs */
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for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
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d = &(*p)->descriptor;
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if (d->in == -1 && d->out == nout) {
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return *p;
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}
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}
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/* no exact match, look for variable fit on inputs and outputs */
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for (list<PannerInfo*>::iterator p = panner_info.begin(); p != panner_info.end(); ++p) {
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d = &(*p)->descriptor;
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if (d->in == -1 && d->out == -1) {
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return *p;
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}
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}
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warning << string_compose (_("no panner discovered for in/out = %1/%2"), nin, nout) << endmsg;
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return 0;
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}
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