4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
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.
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.
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
22 #include "bcsignals.h"
24 #include "condition.h"
26 #include "edlsession.h"
27 #include "localsession.h"
28 #include "playbackengine.h"
30 #include "transportque.h"
32 TransportCommand::TransportCommand()
34 // In rendering we want a master EDL so settings don't get clobbered
35 // in the middle of a job.
37 edl->create_objects();
43 TransportCommand::~TransportCommand()
45 edl->Garbage::remove_user();
48 void TransportCommand::reset()
50 command = COMMAND_NONE;
65 EDL* TransportCommand::get_edl()
70 void TransportCommand::delete_edl()
72 edl->Garbage::remove_user();
76 void TransportCommand::new_edl()
79 edl->create_objects();
83 void TransportCommand::copy_from(TransportCommand *command)
85 this->command = command->command;
86 this->change_type = command->change_type;
87 this->edl->copy_all(command->edl);
88 this->start_position = command->start_position;
89 this->end_position = command->end_position;
90 this->playbackstart = command->playbackstart;
91 this->realtime = command->realtime;
92 this->resume = command->resume;
93 this->locked = command->locked;
94 this->toggle_audio = command->toggle_audio;
95 this->loop_play = command->loop_play;
96 this->displacement = command->displacement;
97 this->speed = command->speed;
100 TransportCommand& TransportCommand::operator=(TransportCommand &command)
106 int TransportCommand::single_frame(int command)
108 return (command == SINGLE_FRAME_FWD || command == SINGLE_FRAME_REWIND ||
109 command == CURRENT_FRAME || command == LAST_FRAME);
112 int TransportCommand::get_direction(int command)
115 case SINGLE_FRAME_FWD:
122 case SINGLE_FRAME_REWIND:
135 float TransportCommand::get_speed(int command, float speed)
140 return speed ? speed : 0.5;
144 case SINGLE_FRAME_FWD:
145 case SINGLE_FRAME_REWIND:
152 return speed ? speed : 2.;
158 // Assume starting without pause
159 void TransportCommand::set_playback_range(EDL *edl, int use_inout, int do_displacement)
161 if( !edl ) edl = this->edl;
162 double length = edl->tracks->total_playable_length();
163 double frame_period = 1.0 / edl->session->frame_rate;
166 start_position = use_inout && edl->local_session->inpoint_valid() ?
167 edl->local_session->get_inpoint() :
168 !loop_play ? edl->local_session->get_selectionstart(1) : 0;
169 end_position = use_inout && edl->local_session->outpoint_valid() ?
170 edl->local_session->get_outpoint() :
171 !loop_play ? edl->local_session->get_selectionend(1) : length;
173 if( !use_inout && EQUIV(start_position, end_position) ) {
174 // starting play at or past end_position, play to end_position of media (for mixers)
175 if( start_position >= length )
176 length = edl->tracks->total_length();
181 end_position = length;
182 // this prevents a crash if start_position position is after the loop when playing forwards
183 if( edl->local_session->loop_playback &&
184 start_position > edl->local_session->loop_end ) {
185 start_position = edl->local_session->loop_start;
193 // this prevents a crash if start_position position is before the loop when playing backwards
194 if( edl->local_session->loop_playback &&
195 end_position <= edl->local_session->loop_start ) {
196 end_position = edl->local_session->loop_end;
202 case SINGLE_FRAME_FWD:
203 end_position = start_position + frame_period;
206 case SINGLE_FRAME_REWIND:
207 start_position = end_position - frame_period;
211 if( realtime && do_displacement ) {
212 if( (command != CURRENT_FRAME && get_direction() == PLAY_FORWARD ) ||
213 (command != LAST_FRAME && get_direction() == PLAY_REVERSE ) ) {
214 start_position += frame_period;
215 end_position += frame_period;
221 // if( start_position < 0 )
222 // start_position = 0;
223 // if( end_position > length )
224 // end_position = length;
225 if( end_position < start_position )
226 end_position = start_position;
228 playbackstart = get_direction() == PLAY_FORWARD ?
229 start_position : end_position;
232 void TransportCommand::playback_range_adjust_inout()
234 if(edl->local_session->inpoint_valid() ||
235 edl->local_session->outpoint_valid())
237 playback_range_inout();
241 void TransportCommand::playback_range_inout()
243 if(edl->local_session->inpoint_valid())
244 start_position = edl->local_session->get_inpoint();
248 if(edl->local_session->outpoint_valid())
249 end_position = edl->local_session->get_outpoint();
251 end_position = edl->tracks->total_playable_length();
252 if( start_position >= end_position )
253 end_position = edl->tracks->total_length();
257 void TransportCommand::playback_range_project()
260 end_position = edl->tracks->total_playable_length();
263 void TransportCommand::playback_range_1frame()
265 start_position = end_position = edl->local_session->get_selectionstart(1);
266 if( edl->session->frame_rate > 0 ) end_position += 1./edl->session->frame_rate;