+ FrameRateConversion frc (_film->video_frame_rate(), _film->dcp_frame_rate());
+
+ if (frc.skip && (_video_frames_in % 2)) {
+ ++_video_frames_in;
+ return;
+ }
+
+ boost::mutex::scoped_lock lock (_mutex);
+
+ /* 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;
+ }
+
+ if (_writer->thrown ()) {
+ _writer->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);
+ 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 (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(),
+ _film->log()
+ )
+ ));
+
+ _condition.notify_all ();
+ _have_a_real_frame = true;
+ }
+
+ ++_video_frames_in;
+ ++_video_frames_out;
+
+ if (frc.repeat) {
+ _writer->repeat (_video_frames_out);
+ ++_video_frames_out;
+ frame_done ();
+ }
+}
+
+void
+Encoder::process_audio (shared_ptr<const AudioBuffers> data)
+{
+#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_frame_rate()) + 32;
+
+ shared_ptr<AudioBuffers> resampled (new AudioBuffers (_film->audio_mapping().dcp_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
+
+ _writer->write (data);
+}
+
+void
+Encoder::terminate_threads ()
+{
+ boost::mutex::scoped_lock lock (_mutex);
+ _terminate = true;
+ _condition.notify_all ();
+ lock.unlock ();
+
+ for (list<boost::thread *>::iterator i = _threads.begin(); i != _threads.end(); ++i) {
+ if ((*i)->joinable ()) {
+ (*i)->join ();
+ }
+ delete *i;
+ }
+}
+
+void
+Encoder::encoder_thread (ServerDescription* server)
+{
+ /* 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 ();
+ _film->log()->log (String::compose (N_("Encoder thread %1 pops frame %2 from queue"), boost::this_thread::get_id(), vf->frame()), Log::VERBOSE);
+ _queue.pop_front ();
+
+ lock.unlock ();
+
+ shared_ptr<EncodedData> encoded;
+
+ if (server) {
+ try {
+ encoded = vf->encode_remotely (server);
+
+ 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 ());
+ 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 ();
+ }