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livetrax/session_utils/common.cc

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#include <iostream>
#include <cstdlib>
#include <glibmm.h>
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#include "pbd/debug.h"
#include "pbd/event_loop.h"
#include "pbd/error.h"
#include "pbd/failed_constructor.h"
#include "pbd/pthread_utils.h"
#include "ardour/audioengine.h"
#include "ardour/filename_extensions.h"
#include "ardour/types.h"
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#include "common.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
static const char* localedir = LOCALEDIR;
TestReceiver test_receiver;
void
TestReceiver::receive (Transmitter::Channel chn, const char * str)
{
const char *prefix = "";
switch (chn) {
case Transmitter::Error:
prefix = ": [ERROR]: ";
break;
case Transmitter::Info:
/* ignore */
return;
case Transmitter::Warning:
prefix = ": [WARNING]: ";
break;
case Transmitter::Fatal:
prefix = ": [FATAL]: ";
break;
case Transmitter::Throw:
/* this isn't supposed to happen */
abort ();
}
/* note: iostreams are already thread-safe: no external
lock required.
*/
std::cout << prefix << str << std::endl;
if (chn == Transmitter::Fatal) {
::exit (9);
}
}
/* temporarily required due to some code design confusion (Feb 2014) */
#include "ardour/vst_types.h"
int vstfx_init (void*) { return 0; }
void vstfx_exit () {}
void vstfx_destroy_editor (VSTState*) {}
class MyEventLoop : public sigc::trackable, public EventLoop
{
public:
MyEventLoop (std::string const& name) : EventLoop (name) {
run_loop_thread = Glib::Threads::Thread::self();
}
void call_slot (InvalidationRecord*, const boost::function<void()>& f) {
if (Glib::Threads::Thread::self() == run_loop_thread) {
f ();
}
}
Glib::Threads::Mutex& slot_invalidation_mutex() { return request_buffer_map_lock; }
private:
Glib::Threads::Thread* run_loop_thread;
Glib::Threads::Mutex request_buffer_map_lock;
};
static MyEventLoop *event_loop;
void
SessionUtils::init (bool print_log)
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{
if (!ARDOUR::init (false, true, localedir)) {
cerr << "Ardour failed to initialize\n" << endl;
::exit (EXIT_FAILURE);
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}
event_loop = new MyEventLoop ("util");
EventLoop::set_event_loop_for_thread (event_loop);
SessionEvent::create_per_thread_pool ("util", 512);
if (print_log) {
test_receiver.listen_to (error);
test_receiver.listen_to (info);
test_receiver.listen_to (fatal);
test_receiver.listen_to (warning);
}
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}
// TODO return NULL, rather than exit() ?!
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static Session * _load_session (string dir, string state)
{
AudioEngine* engine = AudioEngine::create ();
if (!engine->set_backend ("None (Dummy)", "Unit-Test", "")) {
std::cerr << "Cannot create Audio/MIDI engine\n";
::exit (EXIT_FAILURE);
}
engine->set_input_channels (256);
engine->set_output_channels (256);
float sr;
SampleFormat sf;
std::string v;
std::string s = Glib::build_filename (dir, state + statefile_suffix);
if (!Glib::file_test (s, Glib::FILE_TEST_EXISTS | Glib::FILE_TEST_IS_REGULAR)) {
std::cerr << "Cannot read session '"<< s << "'\n";
return 0;
}
if (Session::get_info_from_path (s, sr, sf, v) == 0) {
if (engine->set_sample_rate (sr)) {
std::cerr << "Cannot set session's samplerate.\n";
return 0;
}
} else {
std::cerr << "Cannot get samplerate from session.\n";
return 0;
}
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init_post_engine ();
if (engine->start () != 0) {
std::cerr << "Cannot start Audio/MIDI engine\n";
return 0;
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}
Session* session = new Session (*engine, dir, state);
engine->set_session (session);
return session;
}
Session *
SessionUtils::load_session (string dir, string state, bool exit_at_failure)
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{
Session* s = 0;
try {
s = _load_session (dir, state);
} catch (failed_constructor& e) {
cerr << "failed_constructor: " << e.what() << "\n";
::exit (EXIT_FAILURE);
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} catch (AudioEngine::PortRegistrationFailure& e) {
cerr << "PortRegistrationFailure: " << e.what() << "\n";
::exit (EXIT_FAILURE);
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} catch (exception& e) {
cerr << "exception: " << e.what() << "\n";
::exit (EXIT_FAILURE);
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} catch (...) {
cerr << "unknown exception.\n";
::exit (EXIT_FAILURE);
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}
if (!s && exit_at_failure) {
::exit (EXIT_FAILURE);
}
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return s;
}
void
SessionUtils::unload_session (Session *s)
{
delete s;
AudioEngine::instance()->stop ();
AudioEngine::destroy ();
}
void
SessionUtils::cleanup ()
{
ARDOUR::cleanup ();
delete event_loop;
pthread_cancel_all ();
}