Merge writer-thread with original which was time-cleanup.
[dcpomatic.git] / src / lib / encoder.cc
index 6df7c85a1bde49750ef78f0238cd7cfa6af13ecd..0f48310ef873ce9ec6a447509f7c9f1a20bea242 100644 (file)
@@ -61,7 +61,9 @@ Encoder::Encoder (shared_ptr<const Film> f)
 #ifdef HAVE_SWRESAMPLE   
        , _swr_context (0)
 #endif   
-       , _process_end (false)
+       , _terminate_encoder (false)
+       , _writer_thread (0)
+       , _terminate_writer (false)
 {
        if (_film->audio_stream()) {
                /* Create sound output files with .tmp suffixes; we will rename
@@ -86,6 +88,7 @@ Encoder::~Encoder ()
 {
        close_sound_files ();
        terminate_worker_threads ();
+       terminate_writer_thread ();
 }
 
 void
@@ -131,6 +134,8 @@ Encoder::process_begin ()
                        _worker_threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, *i)));
                }
        }
+
+       _writer_thread = new boost::thread (boost::bind (&Encoder::writer_thread, this));
 }
 
 
@@ -175,11 +180,11 @@ Encoder::process_end ()
 
        boost::mutex::scoped_lock lock (_worker_mutex);
 
-       _film->log()->log ("Clearing queue of " + lexical_cast<string> (_queue.size ()));
+       _film->log()->log ("Clearing queue of " + lexical_cast<string> (_encode_queue.size ()));
 
        /* Keep waking workers until the queue is empty */
-       while (!_queue.empty ()) {
-               _film->log()->log ("Waking with " + lexical_cast<string> (_queue.size ()), Log::VERBOSE);
+       while (!_encode_queue.empty ()) {
+               _film->log()->log ("Waking with " + lexical_cast<string> (_encode_queue.size ()), Log::VERBOSE);
                _worker_condition.notify_all ();
                _worker_condition.wait (lock);
        }
@@ -187,8 +192,9 @@ Encoder::process_end ()
        lock.unlock ();
        
        terminate_worker_threads ();
+       terminate_writer_thread ();
 
-       _film->log()->log ("Mopping up " + lexical_cast<string> (_queue.size()));
+       _film->log()->log ("Mopping up " + lexical_cast<string> (_encode_queue.size()));
 
        /* The following sequence of events can occur in the above code:
             1. a remote worker takes the last image off the queue
@@ -199,7 +205,7 @@ Encoder::process_end ()
             So just mop up anything left in the queue here.
        */
 
-       for (list<shared_ptr<DCPVideoFrame> >::iterator i = _queue.begin(); i != _queue.end(); ++i) {
+       for (list<shared_ptr<DCPVideoFrame> >::iterator i = _encode_queue.begin(); i != _encode_queue.end(); ++i) {
                _film->log()->log (String::compose ("Encode left-over frame %1", (*i)->frame ()));
                try {
                        shared_ptr<EncodedData> e = (*i)->encode_locally ();
@@ -210,6 +216,11 @@ Encoder::process_end ()
                }
        }
 
+       /* Mop up any unwritten things in the writer's queue */
+       for (list<pair<shared_ptr<EncodedData>, int> >::iterator i = _write_queue.begin(); i != _write_queue.end(); ++i) {
+               i->first->write (_opt, i->second);
+       }
+
        /* Now do links (or copies on windows) to duplicate frames */
        for (list<pair<int, int> >::iterator i = _links_required.begin(); i != _links_required.end(); ++i) {
                link (_film->frame_out_path (i->first, false), _film->frame_out_path (i->second, false));
@@ -290,13 +301,13 @@ Encoder::process_video (shared_ptr<Image> image, bool same, boost::shared_ptr<Su
        boost::mutex::scoped_lock lock (_worker_mutex);
 
        /* Wait until the queue has gone down a bit */
-       while (_queue.size() >= _worker_threads.size() * 2 && !_process_end) {
-               TIMING ("decoder sleeps with queue of %1", _queue.size());
+       while (_encode_queue.size() >= _worker_threads.size() * 2 && !_terminate_encoder) {
+               TIMING ("decoder sleeps with queue of %1", _encode_queue.size());
                _worker_condition.wait (lock);
-               TIMING ("decoder wakes with queue of %1", _queue.size());
+               TIMING ("decoder wakes with queue of %1", _encode_queue.size());
        }
 
-       if (_process_end) {
+       if (_terminate_encoder) {
                return;
        }
 
@@ -315,8 +326,8 @@ Encoder::process_video (shared_ptr<Image> image, bool same, boost::shared_ptr<Su
        } else {
                /* Queue this new frame for encoding */
                pair<string, string> const s = Filter::ffmpeg_strings (_film->filters());
-               TIMING ("adding to queue of %1", _queue.size ());
-               _queue.push_back (boost::shared_ptr<DCPVideoFrame> (
+               TIMING ("adding to queue of %1", _encode_queue.size ());
+               _encode_queue.push_back (boost::shared_ptr<DCPVideoFrame> (
                                          new DCPVideoFrame (
                                                  image, sub, _film->format()->dcp_size(), _film->format()->dcp_padding (_film),
                                                  _film->subtitle_offset(), _film->subtitle_scale(),
@@ -412,7 +423,7 @@ void
 Encoder::terminate_worker_threads ()
 {
        boost::mutex::scoped_lock lock (_worker_mutex);
-       _process_end = true;
+       _terminate_encoder = true;
        _worker_condition.notify_all ();
        lock.unlock ();
 
@@ -422,6 +433,23 @@ Encoder::terminate_worker_threads ()
        }
 }
 
+void
+Encoder::terminate_writer_thread ()
+{
+       if (!_writer_thread) {
+               return;
+       }
+       
+       boost::mutex::scoped_lock lock (_writer_mutex);
+       _terminate_writer = true;
+       _writer_condition.notify_all ();
+       lock.unlock ();
+
+       _writer_thread->join ();
+       delete _writer_thread;
+       _writer_thread = 0;
+}
+
 void
 Encoder::encoder_thread (ServerDescription* server)
 {
@@ -435,18 +463,18 @@ Encoder::encoder_thread (ServerDescription* server)
 
                TIMING ("encoder thread %1 sleeps", boost::this_thread::get_id());
                boost::mutex::scoped_lock lock (_worker_mutex);
-               while (_queue.empty () && !_process_end) {
+               while (_encode_queue.empty () && !_terminate_encoder) {
                        _worker_condition.wait (lock);
                }
 
-               if (_process_end) {
+               if (_terminate_encoder) {
                        return;
                }
 
-               TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _queue.size());
-               boost::shared_ptr<DCPVideoFrame> vf = _queue.front ();
+               TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _encode_queue.size());
+               boost::shared_ptr<DCPVideoFrame> vf = _encode_queue.front ();
                _film->log()->log (String::compose ("Encoder thread %1 pops frame %2 from queue", boost::this_thread::get_id(), vf->frame()), Log::VERBOSE);
-               _queue.pop_front ();
+               _encode_queue.pop_front ();
                
                lock.unlock ();
 
@@ -486,14 +514,15 @@ Encoder::encoder_thread (ServerDescription* server)
                }
 
                if (encoded) {
-                       encoded->write (_film, vf->frame ());
-                       frame_done ();
+                       boost::mutex::scoped_lock lock2 (_writer_mutex);
+                       _write_queue.push_back (make_pair (encoded, vf->frame ()));
+                       _writer_condition.notify_all ();
                } else {
                        lock.lock ();
                        _film->log()->log (
                                String::compose ("Encoder thread %1 pushes frame %2 back onto queue after failure", boost::this_thread::get_id(), vf->frame())
                                );
-                       _queue.push_front (vf);
+                       _encode_queue.push_front (vf);
                        lock.unlock ();
                }
 
@@ -520,3 +549,28 @@ Encoder::link (string a, string b) const
        boost::filesystem::copy_file (a, b);
 #endif                 
 }
+
+void
+Encoder::writer_thread ()
+{
+       while (1)
+       {
+               boost::mutex::scoped_lock lock (_writer_mutex);
+               TIMING ("writer sleeps with a queue of %1", _write_queue.size());
+               while (_write_queue.empty() && !_terminate_writer) {
+                       _writer_condition.wait (lock);
+               }
+               TIMING ("writer wakes with a queue of %1", _write_queue.size());
+
+               if (_terminate_writer) {
+                       return;
+               }
+
+               pair<boost::shared_ptr<EncodedData>, int> encoded = _write_queue.front ();
+               _write_queue.pop_front ();
+
+               lock.unlock ();
+               encoded.first->write (_opt, encoded.second);
+               lock.lock ();
+       }
+}