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 TranscodeJob::~TranscodeJob ()
  55 {
  56         stop_thread ();
  57 }
  58
  59 string
  60 TranscodeJob::name () const
  61 {
  62         return String::compose (_("Transcoding %1"), _film->name());
  63 }
  64
  65 string
  66 TranscodeJob::json_name () const
  67 {
  68         return N_("transcode");
  69 }
  70
  71 void
  72 TranscodeJob::set_encoder (shared_ptr<Encoder> e)
  73 {
  74         _encoder = e;
  75 }
  76
  77 void
  78 TranscodeJob::run ()
  79 {
  80         try {
  81                 struct timeval start;
  82                 gettimeofday (&start, 0);
  83                 LOG_GENERAL_NC (N_("Transcode job starting"));
  84
  85                 DCPOMATIC_ASSERT (_encoder);
  86                 _encoder->go ();
  87                 set_progress (1);
  88                 set_state (FINISHED_OK);
  89
  90                 struct timeval finish;
  91                 gettimeofday (&finish, 0);
  92
  93                 float fps = 0;
  94                 if (finish.tv_sec != start.tv_sec) {
  95                         fps = _encoder->frames_done() / (finish.tv_sec - start.tv_sec);
  96                 }
  97
  98                 LOG_GENERAL (N_("Transcode job completed successfully: %1 fps"), fps);
  99
 100                 if (dynamic_pointer_cast<DCPEncoder>(_encoder)) {
 101                         Analytics::instance()->successful_dcp_encode();
 102                 }
 103
 104                 /* XXX: this shouldn't be here */
 105                 if (_film->upload_after_make_dcp() && dynamic_pointer_cast<DCPEncoder>(_encoder)) {
 106                         shared_ptr<Job> job (new UploadJob (_film));
 107                         JobManager::instance()->add (job);
 108                 }
 109
 110                 _encoder.reset ();
 111
 112         } catch (...) {
 113                 _encoder.reset ();
 114                 throw;
 115         }
 116 }
 117
 118 string
 119 TranscodeJob::status () const
 120 {
 121         if (!_encoder) {
 122                 return Job::status ();
 123         }
 124
 125
 126         char buffer[256];
 127         if (finished() || _encoder->finishing()) {
 128                 strncpy (buffer, Job::status().c_str(), 256);
 129         } else {
 130                 snprintf (
 131                         buffer, sizeof(buffer), "%s; %" PRId64 "/%" PRId64 " frames",
 132                         Job::status().c_str(),
 133                         _encoder->frames_done(),
 134                         _film->length().frames_round (_film->video_frame_rate ())
 135                         );
 136
 137                 float const fps = _encoder->current_rate ();
 138                 if (fps) {
 139                         char fps_buffer[64];
 140                         /// TRANSLATORS: fps here is an abbreviation for frames per second
 141                         snprintf (fps_buffer, sizeof(fps_buffer), _("; %.1f fps"), fps);
 142                         strncat (buffer, fps_buffer, strlen(buffer) - 1);
 143                 }
 144         }
 145
 146         return buffer;
 147 }
 148
 149 /** @return Approximate remaining time in seconds */
 150 int
 151 TranscodeJob::remaining_time () const
 152 {
 153         /* _encoder might be destroyed by the job-runner thread */
 154         shared_ptr<Encoder> e = _encoder;
 155
 156         if (!e || e->finishing()) {
 157                 /* We aren't doing any actual encoding so just use the job's guess */
 158                 return Job::remaining_time ();
 159         }
 160
 161         /* We're encoding so guess based on the current encoding rate */
 162
 163         float fps = e->current_rate ();
 164
 165         if (fps == 0) {
 166                 return 0;
 167         }
 168
 169         /* Compute approximate proposed length here, as it's only here that we need it */
 170         return (_film->length().frames_round (_film->video_frame_rate ()) - e->frames_done()) / fps;
 171 }