libs/ardour/auditioner.cc

   1 /*
   2     Copyright (C) 2001 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 #include <glibmm/threads.h>
  21
  22 #include "pbd/error.h"
  23
  24 #include "ardour/audio_diskstream.h"
  25 #include "ardour/audioregion.h"
  26 #include "ardour/audioengine.h"
  27 #include "ardour/delivery.h"
  28 #include "ardour/route.h"
  29 #include "ardour/session.h"
  30 #include "ardour/auditioner.h"
  31 #include "ardour/audioplaylist.h"
  32 #include "ardour/audio_port.h"
  33 #include "ardour/data_type.h"
  34 #include "ardour/region_factory.h"
  35
  36 using namespace std;
  37 using namespace ARDOUR;
  38 using namespace PBD;
  39
  40 #include "i18n.h"
  41
  42 Auditioner::Auditioner (Session& s)
  43         : AudioTrack (s, "auditioner", Route::Auditioner)
  44         , current_frame (0)
  45         , _auditioning (0)
  46         , length (0)
  47         , _seek_frame (-1)
  48         , _seeking (false)
  49         , _seek_complete (false)
  50         , via_monitor (false)
  51 {
  52 }
  53
  54 int
  55 Auditioner::init ()
  56 {
  57         if (Track::init ()) {
  58                 return -1;
  59         }
  60
  61         if (connect ()) {
  62                 return -1;
  63         }
  64
  65         _output->changed.connect_same_thread (*this, boost::bind (&Auditioner::output_changed, this, _1, _2));
  66
  67         return 0;
  68 }
  69
  70 Auditioner::~Auditioner ()
  71 {
  72 }
  73
  74 int
  75 Auditioner::connect ()
  76 {
  77         string left = Config->get_auditioner_output_left();
  78         string right = Config->get_auditioner_output_right();
  79
  80         vector<string> outputs;
  81         _session.engine().get_physical_outputs (DataType::AUDIO, outputs);
  82
  83         via_monitor = false;
  84
  85         if (left.empty() || left == "default") {
  86                 if (_session.monitor_out()) {
  87                         left = _session.monitor_out()->input()->audio (0)->name();
  88                         via_monitor = true;
  89                 } else {
  90                         if (outputs.size() > 0) {
  91                                 left = outputs[0];
  92                         }
  93                 }
  94         }
  95
  96         if (right.empty() || right == "default") {
  97                 if (_session.monitor_out()) {
  98                         right = _session.monitor_out()->input()->audio (1)->name();
  99                         via_monitor = true;
 100                 } else {
 101                         if (outputs.size() > 1) {
 102                                 right = outputs[1];
 103                         }
 104                 }
 105         }
 106
 107         _output->disconnect (this);
 108
 109         if (left.empty() && right.empty()) {
 110                 if (_output->n_ports().n_audio() == 0) {
 111                         /* ports not set up, so must be during startup */
 112                         warning << _("no outputs available for auditioner - manual connection required") << endmsg;
 113                 }
 114         } else {
 115
 116                 if (_output->n_ports().n_audio() == 0) {
 117
 118                         /* create (and connect) new ports */
 119
 120                         _main_outs->defer_pan_reset ();
 121
 122                         if (left.length()) {
 123                                 _output->add_port (left, this, DataType::AUDIO);
 124                         }
 125
 126                         if (right.length()) {
 127                                 _output->add_port (right, this, DataType::AUDIO);
 128                         }
 129
 130                         _main_outs->allow_pan_reset ();
 131                         _main_outs->reset_panner ();
 132
 133                 } else {
 134
 135                         /* reconnect existing ports */
 136
 137                         boost::shared_ptr<Port> oleft (_output->nth (0));
 138                         boost::shared_ptr<Port> oright (_output->nth (1));
 139                         if (oleft) {
 140                                 oleft->connect (left);
 141                         }
 142                         if (oright) {
 143                                 oright->connect (right);
 144                         }
 145                 }
 146
 147         }
 148
 149         return 0;
 150 }
 151
 152 AudioPlaylist&
 153 Auditioner::prepare_playlist ()
 154 {
 155         // FIXME auditioner is still audio-only
 156         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_diskstream->playlist());
 157         assert(apl);
 158
 159         apl->clear ();
 160         return *apl;
 161 }
 162
 163 void
 164 Auditioner::audition_region (boost::shared_ptr<Region> region)
 165 {
 166         if (g_atomic_int_get (&_auditioning)) {
 167                 /* don't go via session for this, because we are going
 168                    to remain active.
 169                 */
 170                 cancel_audition ();
 171         }
 172
 173         if (boost::dynamic_pointer_cast<AudioRegion>(region) == 0) {
 174                 error << _("Auditioning of non-audio regions not yet supported") << endmsg;
 175                 return;
 176         }
 177
 178         Glib::Threads::Mutex::Lock lm (lock);
 179
 180         /* copy it */
 181
 182         boost::shared_ptr<AudioRegion> the_region (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
 183         the_region->set_position (0);
 184
 185         _diskstream->playlist()->drop_regions ();
 186         _diskstream->playlist()->add_region (the_region, 0, 1);
 187
 188         if (_diskstream->n_channels().n_audio() < the_region->n_channels()) {
 189                 audio_diskstream()->add_channel (the_region->n_channels() - _diskstream->n_channels().n_audio());
 190         } else if (_diskstream->n_channels().n_audio() > the_region->n_channels()) {
 191                 audio_diskstream()->remove_channel (_diskstream->n_channels().n_audio() - the_region->n_channels());
 192         }
 193
 194         ProcessorStreams ps;
 195         {
 196                 Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
 197
 198                 if (configure_processors (&ps)) {
 199                         error << string_compose (_("Cannot setup auditioner processing flow for %1 channels"),
 200                                                  _diskstream->n_channels()) << endmsg;
 201                         return;
 202                 }
 203         }
 204
 205         /* force a panner reset now that we have all channels */
 206
 207         _main_outs->reset_panner();
 208
 209         _seek_frame = -1;
 210         _seeking = false;
 211         length = the_region->length();
 212
 213         int dir;
 214         framecnt_t offset = the_region->sync_offset (dir);
 215
 216         /* can't audition from a negative sync point */
 217
 218         if (dir < 0) {
 219                 offset = 0;
 220         }
 221
 222         _diskstream->seek (offset);
 223         current_frame = offset;
 224
 225         g_atomic_int_set (&_auditioning, 1);
 226 }
 227
 228 int
 229 Auditioner::play_audition (framecnt_t nframes)
 230 {
 231         bool need_butler = false;
 232         framecnt_t this_nframes;
 233         int ret;
 234
 235         if (g_atomic_int_get (&_auditioning) == 0) {
 236                 silence (nframes);
 237                 return 0;
 238         }
 239
 240 #if 0 // TODO
 241         if (_seeking && _seek_complete) {
 242                 // set FADE-IN
 243         } else if (_seek_frame >= 0 && _seek_frame < length && !_seeking) {
 244                 // set FADE-OUT -- use/override amp? || use region-gain ?
 245         }
 246 #endif
 247
 248         if (_seeking && _seek_complete) {
 249                 _seek_complete = false;
 250                 _seeking = false;
 251                 _seek_frame = -1;
 252         }
 253
 254         if(!_seeking) {
 255                 /* process audio */
 256                 this_nframes = min (nframes, length - current_frame);
 257
 258                 if ((ret = roll (this_nframes, current_frame, current_frame + nframes, false, need_butler)) != 0) {
 259                         silence (nframes);
 260                         return ret;
 261                 }
 262
 263                 current_frame += this_nframes;
 264
 265         } else {
 266                 silence (nframes);
 267         }
 268
 269         if (_seek_frame >= 0 && _seek_frame < length && !_seeking) {
 270                 _seek_complete = false;
 271                 _seeking = true;
 272                 need_butler = true;
 273         }
 274
 275         if (!_seeking) {
 276                 AuditionProgress(current_frame, length); /* emit */
 277         }
 278
 279         if (current_frame >= length) {
 280                 _session.cancel_audition ();
 281                 return 0;
 282         } else {
 283                 return need_butler ? 1 : 0;
 284         }
 285 }
 286
 287 void
 288 Auditioner::output_changed (IOChange change, void* /*src*/)
 289 {
 290         if (change.type & IOChange::ConnectionsChanged) {
 291                 string phys;
 292                 vector<string> connections;
 293                 vector<string> outputs;
 294                 _session.engine().get_physical_outputs (DataType::AUDIO, outputs);
 295                 if (_output->nth (0)->get_connections (connections)) {
 296                         if (outputs.size() > 0) {
 297                                 phys = outputs[0];
 298                         }
 299                         if (phys != connections[0]) {
 300                                 Config->set_auditioner_output_left (connections[0]);
 301                         } else {
 302                                 Config->set_auditioner_output_left ("default");
 303                         }
 304                 } else {
 305                         Config->set_auditioner_output_left ("");
 306                 }
 307
 308                 connections.clear ();
 309
 310                 if (_output->nth (1)->get_connections (connections)) {
 311                         if (outputs.size() > 1) {
 312                                 phys = outputs[1];
 313                         }
 314                         if (phys != connections[0]) {
 315                                 Config->set_auditioner_output_right (connections[0]);
 316                         } else {
 317                                 Config->set_auditioner_output_right ("default");
 318                         }
 319                 } else {
 320                         Config->set_auditioner_output_right ("");
 321                 }
 322         }
 323 }
 324
 325 ChanCount
 326 Auditioner::input_streams () const
 327 {
 328         /* auditioner never has any inputs - its channel configuration
 329            depends solely on the region we are auditioning.
 330         */
 331
 332         if (audio_diskstream()) {
 333                 return audio_diskstream()->n_channels();
 334         }
 335
 336         return ChanCount ();
 337 }
 338
 339 MonitorState
 340 Auditioner::monitoring_state () const
 341 {
 342         return MonitoringDisk;
 343 }