libs/ardour/session_jack.cc

   1 /*
   2   Copyright (C) 1999-2013 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20
  21 #ifdef WAF_BUILD
  22 #include "libardour-config.h"
  23 #endif
  24
  25 #include <time.h>
  26
  27 #include <glibmm/miscutils.h>
  28
  29 #include "jack/jack.h"
  30 #include "jack/session.h"
  31
  32 #include "ardour/audioengine.h"
  33 #include "ardour/filename_extensions.h"
  34 #include "ardour/session.h"
  35 #include "ardour/session_directory.h"
  36 #include "ardour/tempo.h"
  37
  38 using namespace ARDOUR;
  39 using std::string;
  40
  41 #ifdef HAVE_JACK_SESSION
  42 void
  43 Session::jack_session_event (jack_session_event_t* event)
  44 {
  45         char timebuf[128], *tmp;
  46         time_t n;
  47         struct tm local_time;
  48
  49         time (&n);
  50         localtime_r (&n, &local_time);
  51         strftime (timebuf, sizeof(timebuf), "JS_%FT%T", &local_time);
  52
  53         while ((tmp = strchr(timebuf, ':'))) { *tmp = '.'; }
  54
  55         if (event->type == JackSessionSaveTemplate)
  56         {
  57                 if (save_template( timebuf )) {
  58                         event->flags = JackSessionSaveError;
  59                 } else {
  60                         string cmd ("ardour3 -P -U ");
  61                         cmd += event->client_uuid;
  62                         cmd += " -T ";
  63                         cmd += timebuf;
  64
  65                         event->command_line = strdup (cmd.c_str());
  66                 }
  67         }
  68         else
  69         {
  70                 if (save_state (timebuf)) {
  71                         event->flags = JackSessionSaveError;
  72                 } else {
  73                         std::string xml_path (_session_dir->root_path());
  74                         std::string legalized_filename = legalize_for_path (timebuf) + statefile_suffix;
  75                         xml_path = Glib::build_filename (xml_path, legalized_filename);
  76
  77                         string cmd ("ardour3 -P -U ");
  78                         cmd += event->client_uuid;
  79                         cmd += " \"";
  80                         cmd += xml_path;
  81                         cmd += '\"';
  82
  83                         event->command_line = strdup (cmd.c_str());
  84                 }
  85         }
  86
  87         /* this won't be called if the port engine in use is not JACK, so we do
  88            not have to worry about the type of PortEngine::private_handle()
  89         */
  90
  91         jack_client_t* jack_client = (jack_client_t*) AudioEngine::instance()->port_engine().private_handle();
  92
  93         if (jack_client) {
  94                 jack_session_reply (jack_client, event);
  95         }
  96
  97         if (event->type == JackSessionSaveAndQuit) {
  98                 Quit (); /* EMIT SIGNAL */
  99         }
 100
 101         jack_session_event_free( event );
 102 }
 103 #endif
 104
 105 void
 106 Session::jack_timebase_callback (jack_transport_state_t /*state*/,
 107                                  pframes_t /*nframes*/,
 108                                  jack_position_t* pos,
 109                                  int /*new_position*/)
 110 {
 111         Timecode::BBT_Time bbt;
 112
 113         /* BBT info */
 114
 115         if (_tempo_map) {
 116
 117                 TempoMetric metric (_tempo_map->metric_at (_transport_frame));
 118
 119                 try {
 120                         _tempo_map->bbt_time_rt (_transport_frame, bbt);
 121
 122                         pos->bar = bbt.bars;
 123                         pos->beat = bbt.beats;
 124                         pos->tick = bbt.ticks;
 125
 126                         // XXX still need to set bar_start_tick
 127
 128                         pos->beats_per_bar = metric.meter().divisions_per_bar();
 129                         pos->beat_type = metric.meter().note_divisor();
 130                         pos->ticks_per_beat = Timecode::BBT_Time::ticks_per_beat;
 131                         pos->beats_per_minute = metric.tempo().beats_per_minute();
 132
 133                         pos->valid = jack_position_bits_t (pos->valid | JackPositionBBT);
 134
 135                 } catch (...) {
 136                         /* no message */
 137                 }
 138         }
 139
 140 #ifdef HAVE_JACK_VIDEO_SUPPORT
 141         //poke audio video ratio so Ardour can track Video Sync
 142         pos->audio_frames_per_video_frame = frame_rate() / timecode_frames_per_second();
 143         pos->valid = jack_position_bits_t (pos->valid | JackAudioVideoRatio);
 144 #endif
 145
 146 #if 0
 147         /* Timecode info */
 148
 149         pos->timecode_offset = config.get_timecode_offset();
 150         t.timecode_frame_rate = timecode_frames_per_second();
 151         pos->valid = jack_position_bits_t (pos->valid | JackPositionTimecode;
 152
 153         if (_transport_speed) {
 154
 155                 if (play_loop) {
 156
 157                         Location* location = _locations.auto_loop_location();
 158
 159                         if (location) {
 160
 161                                 t.transport_state = JackTransportLooping;
 162                                 t.loop_start = location->start();
 163                                 t.loop_end = location->end();
 164                                 t.valid = jack_transport_bits_t (t.valid | JackTransportLoop);
 165
 166                         } else {
 167
 168                                 t.loop_start = 0;
 169                                 t.loop_end = 0;
 170                                 t.transport_state = JackTransportRolling;
 171
 172                         }
 173
 174                 } else {
 175
 176                         t.loop_start = 0;
 177                         t.loop_end = 0;
 178                         t.transport_state = JackTransportRolling;
 179
 180                 }
 181
 182         }
 183 #endif
 184 }
 185