cinelerra-5.1/cinelerra/transportque.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program 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  * This program 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 this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "bcsignals.h"
  23 #include "clip.h"
  24 #include "condition.h"
  25 #include "edl.h"
  26 #include "edlsession.h"
  27 #include "localsession.h"
  28 #include "tracks.h"
  29 #include "transportque.h"
  30
  31 TransportCommand::TransportCommand()
  32 {
  33 // In rendering we want a master EDL so settings don't get clobbered
  34 // in the middle of a job.
  35         edl = new EDL;
  36         edl->create_objects();
  37         command = 0;
  38         change_type = 0;
  39         reset();
  40 }
  41
  42 TransportCommand::~TransportCommand()
  43 {
  44         edl->Garbage::remove_user();
  45 }
  46
  47 void TransportCommand::reset()
  48 {
  49         playbackstart = 0;
  50         start_position = 0;
  51         end_position = 0;
  52         infinite = 0;
  53         realtime = 0;
  54         resume = 0;
  55 // Don't reset the change type for commands which don't perform the change
  56         if(command != STOP) change_type = 0;
  57         command = COMMAND_NONE;
  58 }
  59
  60 EDL* TransportCommand::get_edl()
  61 {
  62         return edl;
  63 }
  64
  65 void TransportCommand::delete_edl()
  66 {
  67         edl->Garbage::remove_user();
  68         edl = 0;
  69 }
  70
  71 void TransportCommand::new_edl()
  72 {
  73         edl = new EDL;
  74         edl->create_objects();
  75 }
  76
  77
  78 void TransportCommand::copy_from(TransportCommand *command)
  79 {
  80         this->command = command->command;
  81         this->change_type = command->change_type;
  82         this->edl->copy_all(command->edl);
  83         this->start_position = command->start_position;
  84         this->end_position = command->end_position;
  85         this->playbackstart = command->playbackstart;
  86         this->realtime = command->realtime;
  87         this->resume = command->resume;
  88 }
  89
  90 TransportCommand& TransportCommand::operator=(TransportCommand &command)
  91 {
  92         copy_from(&command);
  93         return *this;
  94 }
  95
  96 int TransportCommand::single_frame()
  97 {
  98         return (command == SINGLE_FRAME_FWD ||
  99                 command == SINGLE_FRAME_REWIND ||
 100                 command == CURRENT_FRAME);
 101 }
 102
 103
 104 int TransportCommand::get_direction()
 105 {
 106         switch(command)
 107         {
 108                 case SINGLE_FRAME_FWD:
 109                 case NORMAL_FWD:
 110                 case FAST_FWD:
 111                 case SLOW_FWD:
 112                 case CURRENT_FRAME:
 113                         return PLAY_FORWARD;
 114
 115                 case SINGLE_FRAME_REWIND:
 116                 case NORMAL_REWIND:
 117                 case FAST_REWIND:
 118                 case SLOW_REWIND:
 119                         return PLAY_REVERSE;
 120
 121                 default:
 122                         break;
 123         }
 124         return PLAY_FORWARD;
 125 }
 126
 127 float TransportCommand::get_speed()
 128 {
 129         switch(command)
 130         {
 131                 case SLOW_FWD:
 132                 case SLOW_REWIND:
 133                         return 0.5;
 134
 135                 case NORMAL_FWD:
 136                 case NORMAL_REWIND:
 137                 case SINGLE_FRAME_FWD:
 138                 case SINGLE_FRAME_REWIND:
 139                 case CURRENT_FRAME:
 140                         return 1.;
 141
 142                 case FAST_FWD:
 143                 case FAST_REWIND:
 144                         return 2.;
 145         }
 146
 147         return 0.;
 148 }
 149
 150 // Assume starting without pause
 151 void TransportCommand::set_playback_range(EDL *edl, int use_inout)
 152 {
 153         if(!edl) edl = this->edl;
 154
 155
 156
 157
 158         switch(command)
 159         {
 160                 case SLOW_FWD:
 161                 case FAST_FWD:
 162                 case NORMAL_FWD:
 163                         start_position = edl->local_session->get_selectionstart(1);
 164                         if(EQUIV(edl->local_session->get_selectionend(1), edl->local_session->get_selectionstart(1)))
 165                                 end_position = edl->tracks->total_playable_length();
 166                         else
 167                                 end_position = edl->local_session->get_selectionend(1);
 168 // this prevents a crash if start position is after the loop when playing forwards
 169                     if (edl->local_session->loop_playback &&
 170                                 start_position > edl->local_session->loop_end)
 171                         {
 172                                     start_position = edl->local_session->loop_start;
 173                         }
 174                         break;
 175
 176                 case SLOW_REWIND:
 177                 case FAST_REWIND:
 178                 case NORMAL_REWIND:
 179                         end_position = edl->local_session->get_selectionend(1);
 180                         if(EQUIV(edl->local_session->get_selectionend(1), edl->local_session->get_selectionstart(1)))
 181                                 start_position = 0;
 182                         else
 183                                 start_position = edl->local_session->get_selectionstart(1);
 184
 185 // this prevents a crash if start position is before the loop when playing backwards
 186                         if (edl->local_session->loop_playback &&
 187                                 end_position <= edl->local_session->loop_start)
 188                         {
 189                                         end_position = edl->local_session->loop_end;
 190                         }
 191                         break;
 192
 193                 case CURRENT_FRAME:
 194                 case SINGLE_FRAME_FWD:
 195                         start_position = edl->local_session->get_selectionstart(1);
 196                         end_position = start_position +
 197                                 1.0 /
 198                                 edl->session->frame_rate;
 199                         break;
 200
 201                 case SINGLE_FRAME_REWIND:
 202                         start_position = edl->local_session->get_selectionend(1);
 203                         end_position = start_position -
 204                                 1.0 /
 205                                 edl->session->frame_rate;
 206                         break;
 207         }
 208
 209
 210         if(use_inout)
 211         {
 212                 if(edl->local_session->inpoint_valid())
 213                         start_position = edl->local_session->get_inpoint();
 214                 if(edl->local_session->outpoint_valid())
 215                         end_position = edl->local_session->get_outpoint();
 216         }
 217
 218         switch(get_direction())
 219         {
 220                 case PLAY_FORWARD:
 221                         playbackstart = start_position;
 222                         break;
 223
 224                 case PLAY_REVERSE:
 225                         playbackstart = end_position;
 226                         break;
 227         }
 228
 229 }
 230
 231 void TransportCommand::playback_range_adjust_inout()
 232 {
 233         if(edl->local_session->inpoint_valid() ||
 234                 edl->local_session->outpoint_valid())
 235         {
 236                 playback_range_inout();
 237         }
 238 }
 239
 240 void TransportCommand::playback_range_inout()
 241 {
 242         if(edl->local_session->inpoint_valid())
 243                 start_position = edl->local_session->get_inpoint();
 244         else
 245                 start_position = 0;
 246
 247         if(edl->local_session->outpoint_valid())
 248                 end_position = edl->local_session->get_outpoint();
 249         else
 250                 end_position = edl->tracks->total_playable_length();
 251 }
 252
 253 void TransportCommand::playback_range_project()
 254 {
 255         start_position = 0;
 256         end_position = edl->tracks->total_playable_length();
 257 }
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274 TransportQue::TransportQue()
 275 {
 276         input_lock = new Condition(1, "TransportQue::input_lock");
 277         output_lock = new Condition(0, "TransportQue::output_lock", 1);
 278 }
 279
 280 TransportQue::~TransportQue()
 281 {
 282         delete input_lock;
 283         delete output_lock;
 284 }
 285
 286 int TransportQue::send_command(int command,
 287                 int change_type,
 288                 EDL *new_edl,
 289                 int realtime,
 290                 int resume,
 291                 int use_inout)
 292 {
 293         input_lock->lock("TransportQue::send_command 1");
 294         this->command.command = command;
 295 // Mutually exclusive operation
 296         this->command.change_type |= change_type;
 297         this->command.realtime = realtime;
 298         this->command.resume = resume;
 299
 300         if(new_edl)
 301         {
 302 // Just change the EDL if the change requires it because renderengine
 303 // structures won't point to the new EDL otherwise and because copying the
 304 // EDL for every cursor movement is slow.
 305                 if(change_type == CHANGE_EDL ||
 306                         (uint32_t)change_type == CHANGE_ALL)
 307                 {
 308 // Copy EDL
 309                         this->command.get_edl()->copy_all(new_edl);
 310                 }
 311                 else
 312                 if(change_type == CHANGE_PARAMS)
 313                 {
 314                         this->command.get_edl()->synchronize_params(new_edl);
 315                 }
 316
 317 // Set playback range
 318                 this->command.set_playback_range(new_edl, use_inout);
 319         }
 320
 321         input_lock->unlock();
 322
 323         output_lock->unlock();
 324         return 0;
 325 }
 326
 327 void TransportQue::update_change_type(int change_type)
 328 {
 329         input_lock->lock("TransportQue::update_change_type");
 330         this->command.change_type |= change_type;
 331         input_lock->unlock();
 332 }