- /* Keep waking workers until the queue is empty */
- while (!_queue.empty ()) {
- _film->log()->log (String::compose (N_("Waking with %1"), _queue.size ()), Log::VERBOSE);
- _condition.notify_all ();
- _condition.wait (lock);
- }
-
- lock.unlock ();
-
- terminate_threads ();
-
- _film->log()->log (String::compose (N_("Mopping up %1"), _queue.size()));
-
- /* The following sequence of events can occur in the above code:
- 1. a remote worker takes the last image off the queue
- 2. the loop above terminates
- 3. the remote worker fails to encode the image and puts it back on the queue
- 4. the remote worker is then terminated by terminate_threads
-
- So just mop up anything left in the queue here.
- */
-
- for (list<shared_ptr<DCPVideoFrame> >::iterator i = _queue.begin(); i != _queue.end(); ++i) {
- _film->log()->log (String::compose (N_("Encode left-over frame %1"), (*i)->frame ()));
- try {
- _writer->write ((*i)->encode_locally(), (*i)->frame (), (*i)->eyes ());
- frame_done ();
- } catch (std::exception& e) {
- _film->log()->log (String::compose (N_("Local encode failed (%1)"), e.what ()));
- }
- }
-
- _writer->finish ();
- _writer.reset ();
-}
-
-/** @return an estimate of the current number of frames we are encoding per second,
- * or 0 if not known.
- */
-float
-Encoder::current_encoding_rate () const
-{
- boost::mutex::scoped_lock lock (_state_mutex);
- if (int (_time_history.size()) < _history_size) {
- return 0;
- }
-
- struct timeval now;
- gettimeofday (&now, 0);
-
- return _history_size / (seconds (now) - seconds (_time_history.back ()));
-}
-
-/** @return Number of video frames that have been sent out */
-int
-Encoder::video_frames_out () const
-{
- boost::mutex::scoped_lock (_state_mutex);
- return _video_frames_out;
-}
-
-/** Should be called when a frame has been encoded successfully.
- * @param n Source frame index.
- */
-void
-Encoder::frame_done ()
-{
- boost::mutex::scoped_lock lock (_state_mutex);
-
- struct timeval tv;
- gettimeofday (&tv, 0);
- _time_history.push_front (tv);
- if (int (_time_history.size()) > _history_size) {
- _time_history.pop_back ();
- }
-}
-
-void
-Encoder::process_video (shared_ptr<PlayerImage> image, Eyes eyes, ColourConversion conversion, bool same)
-{
- boost::mutex::scoped_lock lock (_mutex);
-
- /* XXX: discard 3D here if required */
-
- /* Wait until the queue has gone down a bit */
- while (_queue.size() >= _threads.size() * 2 && !_terminate) {
- TIMING ("decoder sleeps with queue of %1", _queue.size());
- _condition.wait (lock);
- TIMING ("decoder wakes with queue of %1", _queue.size());
- }
-
- if (_terminate) {
- return;
- }
-
- _writer->rethrow ();
- /* Re-throw any exception raised by one of our threads. If more
- than one has thrown an exception, only one will be rethrown, I think;
- but then, if that happens something has gone badly wrong.
- */
- rethrow ();
-
- if (_writer->can_fake_write (_video_frames_out)) {
- _writer->fake_write (_video_frames_out, eyes);
- _have_a_real_frame[eyes] = false;
- frame_done ();
- } else if (same && _have_a_real_frame[eyes]) {
- /* Use the last frame that we encoded. */
- _writer->repeat (_video_frames_out, eyes);
- frame_done ();
- } else {
- /* Queue this new frame for encoding */
- TIMING ("adding to queue of %1", _queue.size ());
- _queue.push_back (shared_ptr<DCPVideoFrame> (
- new DCPVideoFrame (
- image->image(PIX_FMT_RGB24, false), _video_frames_out, eyes, conversion, _film->video_frame_rate(),
- _film->j2k_bandwidth(), _film->resolution(), _film->log()
- )
- ));
-
- _condition.notify_all ();
- _have_a_real_frame[eyes] = true;
- }
-
- if (eyes != EYES_LEFT) {
- ++_video_frames_out;
- }
-}
-
-void
-Encoder::process_audio (shared_ptr<const AudioBuffers> data)
-{
- _writer->write (data);
-}
-
-void
-Encoder::terminate_threads ()
-{
- {
- boost::mutex::scoped_lock lock (_mutex);
- _terminate = true;
- _condition.notify_all ();
- }
-
- for (list<boost::thread *>::iterator i = _threads.begin(); i != _threads.end(); ++i) {
- if ((*i)->joinable ()) {
- (*i)->join ();
- }
- delete *i;
- }
-
- _threads.clear ();
-}
-
-void
-Encoder::encoder_thread (optional<ServerDescription> server)
-try
-{
- /* Number of seconds that we currently wait between attempts
- to connect to the server; not relevant for localhost
- encodings.
- */
- int remote_backoff = 0;
-
- while (1) {
-
- TIMING ("encoder thread %1 sleeps", boost::this_thread::get_id());
- boost::mutex::scoped_lock lock (_mutex);
- while (_queue.empty () && !_terminate) {
- _condition.wait (lock);
- }
-
- if (_terminate) {
- return;
- }
-
- TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _queue.size());
- shared_ptr<DCPVideoFrame> vf = _queue.front ();
- TIMING ("encoder thread %1 pops frame %2 (%3) from queue", boost::this_thread::get_id(), vf->frame(), vf->eyes ());
- _queue.pop_front ();
-
- lock.unlock ();
-
- shared_ptr<EncodedData> encoded;
-
- if (server) {
- try {
- encoded = vf->encode_remotely (server.get ());
-
- if (remote_backoff > 0) {
- _film->log()->log (String::compose (N_("%1 was lost, but now she is found; removing backoff"), server->host_name ()));
- }
-
- /* This job succeeded, so remove any backoff */
- remote_backoff = 0;
-
- } catch (std::exception& e) {
- if (remote_backoff < 60) {
- /* back off more */
- remote_backoff += 10;
- }
- _film->log()->log (
- String::compose (
- N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"),
- vf->frame(), server->host_name(), e.what(), remote_backoff)
- );
- }
-
- } else {
- try {
- TIMING ("encoder thread %1 begins local encode of %2", boost::this_thread::get_id(), vf->frame());
- encoded = vf->encode_locally ();
- TIMING ("encoder thread %1 finishes local encode of %2", boost::this_thread::get_id(), vf->frame());
- } catch (std::exception& e) {
- _film->log()->log (String::compose (N_("Local encode failed (%1)"), e.what ()));
- }
- }
-
- if (encoded) {
- _writer->write (encoded, vf->frame (), vf->eyes ());
- frame_done ();
- } else {
- lock.lock ();
- _film->log()->log (
- String::compose (N_("Encoder thread %1 pushes frame %2 back onto queue after failure"), boost::this_thread::get_id(), vf->frame())
- );
- _queue.push_front (vf);
- lock.unlock ();
- }
-
- if (remote_backoff > 0) {
- dcpomatic_sleep (remote_backoff);
- }
-
- lock.lock ();
- _condition.notify_all ();
- }
-}
-catch (...)
-{
- store_current ();
-}
-
-void
-Encoder::server_found (ServerDescription s)
-{
- add_worker_threads (s);