src/lib/transcode_job.cc

   1 /*
   2     Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 /** @file src/transcode_job.cc
  22  *  @brief A job which transcodes from one format to another.
  23  */
  24
  25 #include "transcode_job.h"
  26 #include "dcp_encoder.h"
  27 #include "upload_job.h"
  28 #include "job_manager.h"
  29 #include "film.h"
  30 #include "encoder.h"
  31 #include "log.h"
  32 #include "dcpomatic_log.h"
  33 #include "compose.hpp"
  34 #include "analytics.h"
  35 #include <iostream>
  36 #include <iomanip>
  37
  38 #include "i18n.h"
  39
  40 using std::string;
  41 using std::fixed;
  42 using std::setprecision;
  43 using std::cout;
  44 using boost::shared_ptr;
  45 using boost::dynamic_pointer_cast;
  46
  47 /** @param film Film to use */
  48 TranscodeJob::TranscodeJob (shared_ptr<const Film> film)
  49         : Job (film)
  50 {
  51
  52 }
  53
  54 string
  55 TranscodeJob::name () const
  56 {
  57         return String::compose (_("Transcoding %1"), _film->name());
  58 }
  59
  60 string
  61 TranscodeJob::json_name () const
  62 {
  63         return N_("transcode");
  64 }
  65
  66 void
  67 TranscodeJob::set_encoder (shared_ptr<Encoder> e)
  68 {
  69         _encoder = e;
  70 }
  71
  72 void
  73 TranscodeJob::run ()
  74 {
  75         try {
  76                 struct timeval start;
  77                 gettimeofday (&start, 0);
  78                 LOG_GENERAL_NC (N_("Transcode job starting"));
  79
  80                 DCPOMATIC_ASSERT (_encoder);
  81                 _encoder->go ();
  82                 set_progress (1);
  83                 set_state (FINISHED_OK);
  84
  85                 struct timeval finish;
  86                 gettimeofday (&finish, 0);
  87
  88                 float fps = 0;
  89                 if (finish.tv_sec != start.tv_sec) {
  90                         fps = _encoder->frames_done() / (finish.tv_sec - start.tv_sec);
  91                 }
  92
  93                 LOG_GENERAL (N_("Transcode job completed successfully: %1 fps"), fps);
  94
  95                 if (dynamic_pointer_cast<DCPEncoder>(_encoder)) {
  96                         Analytics::instance()->successful_dcp_encode();
  97                 }
  98
  99                 /* XXX: this shouldn't be here */
 100                 if (_film->upload_after_make_dcp() && dynamic_pointer_cast<DCPEncoder>(_encoder)) {
 101                         shared_ptr<Job> job (new UploadJob (_film));
 102                         JobManager::instance()->add (job);
 103                 }
 104
 105                 _encoder.reset ();
 106
 107         } catch (...) {
 108                 _encoder.reset ();
 109                 throw;
 110         }
 111 }
 112
 113 string
 114 TranscodeJob::status () const
 115 {
 116         if (!_encoder) {
 117                 return Job::status ();
 118         }
 119
 120
 121         char buffer[256];
 122         if (finished() || _encoder->finishing()) {
 123                 strncpy (buffer, Job::status().c_str(), 255);
 124                 buffer[255] = '\0';
 125         } else {
 126                 snprintf (
 127                         buffer, sizeof(buffer), "%s; %" PRId64 "/%" PRId64 " frames",
 128                         Job::status().c_str(),
 129                         _encoder->frames_done(),
 130                         _film->length().frames_round (_film->video_frame_rate ())
 131                         );
 132
 133                 float const fps = _encoder->current_rate ();
 134                 if (fps) {
 135                         char fps_buffer[64];
 136                         /// TRANSLATORS: fps here is an abbreviation for frames per second
 137                         snprintf (fps_buffer, sizeof(fps_buffer), _("; %.1f fps"), fps);
 138                         strncat (buffer, fps_buffer, strlen(buffer) - 1);
 139                 }
 140         }
 141
 142         return buffer;
 143 }
 144
 145 /** @return Approximate remaining time in seconds */
 146 int
 147 TranscodeJob::remaining_time () const
 148 {
 149         /* _encoder might be destroyed by the job-runner thread */
 150         shared_ptr<Encoder> e = _encoder;
 151
 152         if (!e || e->finishing()) {
 153                 /* We aren't doing any actual encoding so just use the job's guess */
 154                 return Job::remaining_time ();
 155         }
 156
 157         /* We're encoding so guess based on the current encoding rate */
 158
 159         float fps = e->current_rate ();
 160
 161         if (fps == 0) {
 162                 return 0;
 163         }
 164
 165         /* Compute approximate proposed length here, as it's only here that we need it */
 166         return (_film->length().frames_round (_film->video_frame_rate ()) - e->frames_done()) / fps;
 167 }