Merge master.
[dcpomatic.git] / src / lib / encoder.cc
index 8549962ff01807505683266e778d16c4c8eaef43..8f31b596eb8f4d972f38eb95c3b9e84c8e9d921f 100644 (file)
  */
 
 #include <iostream>
-#include <boost/filesystem.hpp>
-#include <boost/lexical_cast.hpp>
-#include <libdcp/picture_asset.h>
+#include <boost/lambda/lambda.hpp>
+#include <libcxml/cxml.h>
 #include "encoder.h"
 #include "util.h"
-#include "options.h"
 #include "film.h"
 #include "log.h"
-#include "exceptions.h"
-#include "filter.h"
 #include "config.h"
 #include "dcp_video_frame.h"
 #include "server.h"
-#include "format.h"
 #include "cross.h"
 #include "writer.h"
+#include "server_finder.h"
+#include "player.h"
+#include "dcp_video.h"
 
 #include "i18n.h"
 
@@ -47,108 +45,57 @@ using std::stringstream;
 using std::vector;
 using std::list;
 using std::cout;
+using std::min;
 using std::make_pair;
-using namespace boost;
+using boost::shared_ptr;
+using boost::weak_ptr;
+using boost::optional;
+using boost::scoped_array;
 
 int const Encoder::_history_size = 25;
 
 /** @param f Film that we are encoding */
-Encoder::Encoder (shared_ptr<Film> f)
+Encoder::Encoder (shared_ptr<const Film> f, weak_ptr<Job> j)
        : _film (f)
-       , _video_frames_in (0)
+       , _job (j)
        , _video_frames_out (0)
-#ifdef HAVE_SWRESAMPLE   
-       , _swr_context (0)
-#endif
-       , _have_a_real_frame (false)
        , _terminate (false)
 {
-       
+
 }
 
 Encoder::~Encoder ()
 {
        terminate_threads ();
-       if (_writer) {
-               _writer->finish ();
-       }
 }
 
+/** Add a worker thread for a each thread on a remote server.  Caller must hold
+ *  a lock on _mutex, or know that one is not currently required to
+ *  safely modify _threads.
+ */
 void
-Encoder::process_begin ()
+Encoder::add_worker_threads (ServerDescription d)
 {
-       if (_film->audio_stream() && _film->audio_stream()->sample_rate() != _film->target_audio_sample_rate()) {
-#ifdef HAVE_SWRESAMPLE
-
-               stringstream s;
-               s << String::compose (N_("Will resample audio from %1 to %2"), _film->audio_stream()->sample_rate(), _film->target_audio_sample_rate());
-               _film->log()->log (s.str ());
-
-               /* We will be using planar float data when we call the resampler */
-               _swr_context = swr_alloc_set_opts (
-                       0,
-                       _film->audio_stream()->channel_layout(),
-                       AV_SAMPLE_FMT_FLTP,
-                       _film->target_audio_sample_rate(),
-                       _film->audio_stream()->channel_layout(),
-                       AV_SAMPLE_FMT_FLTP,
-                       _film->audio_stream()->sample_rate(),
-                       0, 0
-                       );
-               
-               swr_init (_swr_context);
-#else
-               throw EncodeError (_("Cannot resample audio as libswresample is not present"));
-#endif
-       } else {
-#ifdef HAVE_SWRESAMPLE
-               _swr_context = 0;
-#endif         
+       _film->log()->log (String::compose (N_("Adding %1 worker threads for remote %2"), d.host_name ()));
+       for (int i = 0; i < d.threads(); ++i) {
+               _threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, d)));
        }
+}
 
+void
+Encoder::process_begin ()
+{
        for (int i = 0; i < Config::instance()->num_local_encoding_threads (); ++i) {
-               _threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, (ServerDescription *) 0)));
-       }
-
-       vector<ServerDescription*> servers = Config::instance()->servers ();
-
-       for (vector<ServerDescription*>::iterator i = servers.begin(); i != servers.end(); ++i) {
-               for (int j = 0; j < (*i)->threads (); ++j) {
-                       _threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, *i)));
-               }
+               _threads.push_back (new boost::thread (boost::bind (&Encoder::encoder_thread, this, optional<ServerDescription> ())));
        }
 
-       _writer.reset (new Writer (_film));
+       _writer.reset (new Writer (_film, _job));
+       ServerFinder::instance()->connect (boost::bind (&Encoder::server_found, this, _1));
 }
 
-
 void
 Encoder::process_end ()
 {
-#if HAVE_SWRESAMPLE    
-       if (_film->audio_stream() && _film->audio_stream()->channels() && _swr_context) {
-
-               shared_ptr<AudioBuffers> out (new AudioBuffers (_film->audio_stream()->channels(), 256));
-                       
-               while (1) {
-                       int const frames = swr_convert (_swr_context, (uint8_t **) out->data(), 256, 0, 0);
-
-                       if (frames < 0) {
-                               throw EncodeError (_("could not run sample-rate converter"));
-                       }
-
-                       if (frames == 0) {
-                               break;
-                       }
-
-                       out->set_frames (frames);
-                       write_audio (out);
-               }
-
-               swr_free (&_swr_context);
-       }
-#endif
-
        boost::mutex::scoped_lock lock (_mutex);
 
        _film->log()->log (String::compose (N_("Clearing queue of %1"), _queue.size ()));
@@ -178,13 +125,13 @@ Encoder::process_end ()
        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 ());
+                       _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 ();
 }      
@@ -193,9 +140,9 @@ Encoder::process_end ()
  *  or 0 if not known.
  */
 float
-Encoder::current_frames_per_second () const
+Encoder::current_encoding_rate () const
 {
-       boost::mutex::scoped_lock lock (_history_mutex);
+       boost::mutex::scoped_lock lock (_state_mutex);
        if (int (_time_history.size()) < _history_size) {
                return 0;
        }
@@ -210,7 +157,7 @@ Encoder::current_frames_per_second () const
 int
 Encoder::video_frames_out () const
 {
-       boost::mutex::scoped_lock (_history_mutex);
+       boost::mutex::scoped_lock (_state_mutex);
        return _video_frames_out;
 }
 
@@ -220,7 +167,7 @@ Encoder::video_frames_out () const
 void
 Encoder::frame_done ()
 {
-       boost::mutex::scoped_lock lock (_history_mutex);
+       boost::mutex::scoped_lock lock (_state_mutex);
        
        struct timeval tv;
        gettimeofday (&tv, 0);
@@ -231,17 +178,14 @@ Encoder::frame_done ()
 }
 
 void
-Encoder::process_video (shared_ptr<const Image> image, bool same, boost::shared_ptr<Subtitle> sub)
+Encoder::process_video (shared_ptr<DCPVideo> frame)
 {
-       FrameRateConversion frc (_film->source_frame_rate(), _film->dcp_frame_rate());
+       _waker.nudge ();
        
-       if (frc.skip && (_video_frames_in % 2)) {
-               ++_video_frames_in;
-               return;
-       }
-
        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());
@@ -253,88 +197,54 @@ Encoder::process_video (shared_ptr<const Image> image, bool same, boost::shared_
                return;
        }
 
-       if (_writer->thrown ()) {
-               _writer->rethrow ();
-       }
+       _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);
-               _have_a_real_frame = false;
-               frame_done ();
-       } else if (same && _have_a_real_frame) {
-               /* Use the last frame that we encoded. */
-               _writer->repeat (_video_frames_out);
+               _writer->fake_write (_video_frames_out, frame->eyes ());
                frame_done ();
        } 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> (
+               _queue.push_back (shared_ptr<DCPVideoFrame> (
                                          new DCPVideoFrame (
-                                                 image, sub, _film->format()->dcp_size(), _film->format()->dcp_padding (_film),
-                                                 _film->subtitle_offset(), _film->subtitle_scale(),
-                                                 _film->scaler(), _video_frames_out, _film->dcp_frame_rate(), s.second,
-                                                 _film->colour_lut(), _film->j2k_bandwidth(),
+                                                 frame->image(PIX_FMT_RGB24, false),
+                                                 _video_frames_out,
+                                                 frame->eyes(),
+                                                 frame->conversion(),
+                                                 _film->video_frame_rate(),
+                                                 _film->j2k_bandwidth(),
+                                                 _film->resolution(),
                                                  _film->log()
                                                  )
                                          ));
                
                _condition.notify_all ();
-               _have_a_real_frame = true;
        }
 
-       ++_video_frames_in;
-       ++_video_frames_out;
-
-       if (frc.repeat) {
-               _writer->repeat (_video_frames_out);
+       if (frame->eyes() != EYES_LEFT) {
                ++_video_frames_out;
-               frame_done ();
        }
 }
 
 void
 Encoder::process_audio (shared_ptr<const AudioBuffers> data)
 {
-       if (!data->frames ()) {
-               return;
-       }
-       
-#if HAVE_SWRESAMPLE
-       /* Maybe sample-rate convert */
-       if (_swr_context) {
-
-               /* Compute the resampled frames count and add 32 for luck */
-               int const max_resampled_frames = ceil ((int64_t) data->frames() * _film->target_audio_sample_rate() / _film->audio_stream()->sample_rate()) + 32;
-
-               shared_ptr<AudioBuffers> resampled (new AudioBuffers (_film->audio_stream()->channels(), max_resampled_frames));
-
-               /* Resample audio */
-               int const resampled_frames = swr_convert (
-                       _swr_context, (uint8_t **) resampled->data(), max_resampled_frames, (uint8_t const **) data->data(), data->frames()
-                       );
-               
-               if (resampled_frames < 0) {
-                       throw EncodeError (_("could not run sample-rate converter"));
-               }
-
-               resampled->set_frames (resampled_frames);
-               
-               /* And point our variables at the resampled audio */
-               data = resampled;
-       }
-#endif
-
-       write_audio (data);
+       _writer->write (data);
 }
 
 void
 Encoder::terminate_threads ()
 {
-       boost::mutex::scoped_lock lock (_mutex);
-       _terminate = true;
-       _condition.notify_all ();
-       lock.unlock ();
+       {
+               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 ()) {
@@ -342,10 +252,13 @@ Encoder::terminate_threads ()
                }
                delete *i;
        }
+
+       _threads.clear ();
 }
 
 void
-Encoder::encoder_thread (ServerDescription* server)
+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
@@ -366,8 +279,8 @@ Encoder::encoder_thread (ServerDescription* server)
                }
 
                TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _queue.size());
-               boost::shared_ptr<DCPVideoFrame> vf = _queue.front ();
-               _film->log()->log (String::compose (N_("Encoder thread %1 pops frame %2 from queue"), boost::this_thread::get_id(), vf->frame()), Log::VERBOSE);
+               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 ();
@@ -376,7 +289,7 @@ Encoder::encoder_thread (ServerDescription* server)
 
                if (server) {
                        try {
-                               encoded = vf->encode_remotely (server);
+                               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 ()));
@@ -408,7 +321,7 @@ Encoder::encoder_thread (ServerDescription* server)
                }
 
                if (encoded) {
-                       _writer->write (encoded, vf->frame ());
+                       _writer->write (encoded, vf->frame (), vf->eyes ());
                        frame_done ();
                } else {
                        lock.lock ();
@@ -420,34 +333,20 @@ Encoder::encoder_thread (ServerDescription* server)
                }
 
                if (remote_backoff > 0) {
-                       dvdomatic_sleep (remote_backoff);
+                       dcpomatic_sleep (remote_backoff);
                }
 
                lock.lock ();
                _condition.notify_all ();
        }
 }
+catch (...)
+{
+       store_current ();
+}
 
 void
-Encoder::write_audio (shared_ptr<const AudioBuffers> data)
+Encoder::server_found (ServerDescription s)
 {
-       AudioMapping m (_film->audio_channels ());
-       if (m.dcp_channels() != _film->audio_channels()) {
-
-               /* Remap (currently just for mono -> 5.1) */
-
-               shared_ptr<AudioBuffers> b (new AudioBuffers (m.dcp_channels(), data->frames ()));
-               for (int i = 0; i < m.dcp_channels(); ++i) {
-                       optional<int> s = m.dcp_to_source (static_cast<libdcp::Channel> (i));
-                       if (!s) {
-                               b->make_silent (i);
-                       } else {
-                               memcpy (b->data()[i], data->data()[s.get()], data->frames() * sizeof(float));
-                       }
-               }
-
-               data = b;
-       }
-
-       _writer->write (data);
+       add_worker_threads (s);
 }