--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "bchash.h"
+#include "bcsignals.h"
+#include "cache.h"
+#include "condition.h"
+#include "edl.h"
+#include "edlsession.h"
+#include "localsession.h"
+#include "mbuttons.h"
+#include "mutex.h"
+#include "mwindow.h"
+#include "mwindowgui.h"
+#include "patchbay.h"
+#include "tracking.h"
+#include "playbackengine.h"
+#include "playtransport.h"
+#include "preferences.h"
+#include "renderengine.h"
+#include "mainsession.h"
+#include "trackcanvas.h"
+#include "transportque.h"
+#include "vrender.h"
+
+
+PlaybackEngine::PlaybackEngine(MWindow *mwindow, Canvas *output)
+ : Thread(1, 0, 0)
+{
+ this->mwindow = mwindow;
+ this->output = output;
+ is_playing_back = 0;
+ tracking_position = 0;
+ tracking_active = 0;
+ audio_cache = 0;
+ video_cache = 0;
+ last_command = STOP;
+ tracking_lock = new Mutex("PlaybackEngine::tracking_lock");
+ renderengine_lock = new Mutex("PlaybackEngine::renderengine_lock");
+ tracking_done = new Condition(1, "PlaybackEngine::tracking_done");
+ pause_lock = new Condition(0, "PlaybackEngine::pause_lock");
+ start_lock = new Condition(0, "PlaybackEngine::start_lock");
+ render_engine = 0;
+ debug = 0;
+}
+
+PlaybackEngine::~PlaybackEngine()
+{
+ done = 1;
+ que->send_command(STOP,
+ CHANGE_NONE,
+ 0,
+ 0);
+ interrupt_playback();
+
+ Thread::join();
+ delete preferences;
+ delete command;
+ delete que;
+ delete_render_engine();
+ delete audio_cache;
+ delete video_cache;
+ delete tracking_lock;
+ delete tracking_done;
+ delete pause_lock;
+ delete start_lock;
+ delete renderengine_lock;
+}
+
+void PlaybackEngine::create_objects()
+{
+ preferences = new Preferences;
+ command = new TransportCommand;
+ que = new TransportQue;
+// Set the first change to maximum
+ que->command.change_type = CHANGE_ALL;
+
+ preferences->copy_from(mwindow->preferences);
+
+ done = 0;
+ Thread::start();
+ start_lock->lock("PlaybackEngine::create_objects");
+}
+
+ChannelDB* PlaybackEngine::get_channeldb()
+{
+ PlaybackConfig *config = command->get_edl()->session->playback_config;
+ switch(config->vconfig->driver)
+ {
+ case VIDEO4LINUX2JPEG:
+ return mwindow->channeldb_v4l2jpeg;
+ case PLAYBACK_BUZ:
+ return mwindow->channeldb_buz;
+ }
+ return 0;
+}
+
+int PlaybackEngine::create_render_engine()
+{
+// Fix playback configurations
+ delete_render_engine();
+
+
+ render_engine = new RenderEngine(this,
+ preferences,
+ output,
+ get_channeldb(),
+ 0);
+//printf("PlaybackEngine::create_render_engine %d\n", __LINE__);
+ return 0;
+}
+
+void PlaybackEngine::delete_render_engine()
+{
+ renderengine_lock->lock("PlaybackEngine::delete_render_engine");
+ delete render_engine;
+ render_engine = 0;
+ renderengine_lock->unlock();
+}
+
+void PlaybackEngine::arm_render_engine()
+{
+ if(render_engine)
+ render_engine->arm_command(command);
+}
+
+void PlaybackEngine::start_render_engine()
+{
+ if(render_engine) render_engine->start_command();
+}
+
+void PlaybackEngine::wait_render_engine()
+{
+ if(command->realtime && render_engine)
+ {
+ render_engine->join();
+ }
+}
+
+void PlaybackEngine::create_cache()
+{
+ if(audio_cache) { delete audio_cache; audio_cache = 0; }
+ if(video_cache) { delete video_cache; video_cache = 0; }
+ if(!audio_cache) audio_cache = new CICache(preferences);
+ if(!video_cache) video_cache = new CICache(preferences);
+}
+
+
+void PlaybackEngine::perform_change()
+{
+ switch(command->change_type)
+ {
+ case CHANGE_ALL:
+ create_cache();
+ case CHANGE_EDL:
+ create_render_engine();
+ case CHANGE_PARAMS:
+ if(command->change_type != CHANGE_EDL &&
+ (uint32_t)command->change_type != CHANGE_ALL)
+ render_engine->get_edl()->synchronize_params(command->get_edl());
+ case CHANGE_NONE:
+ break;
+ }
+}
+
+void PlaybackEngine::sync_parameters(EDL *edl)
+{
+// TODO: lock out render engine from keyframe deletions
+ command->get_edl()->synchronize_params(edl);
+ if(render_engine) render_engine->get_edl()->synchronize_params(edl);
+}
+
+
+void PlaybackEngine::interrupt_playback(int wait_tracking)
+{
+ renderengine_lock->lock("PlaybackEngine::interrupt_playback");
+ if(render_engine)
+ render_engine->interrupt_playback();
+ renderengine_lock->unlock();
+
+// Stop pausing
+ pause_lock->unlock();
+
+// Wait for tracking to finish if it is running
+ if(wait_tracking)
+ {
+ tracking_done->lock("PlaybackEngine::interrupt_playback");
+ tracking_done->unlock();
+ }
+}
+
+
+// Return 1 if levels exist
+int PlaybackEngine::get_output_levels(double *levels, long position)
+{
+ int result = 0;
+ if(render_engine && render_engine->do_audio)
+ {
+ result = 1;
+ render_engine->get_output_levels(levels, position);
+ }
+ return result;
+}
+
+
+int PlaybackEngine::get_module_levels(ArrayList<double> *module_levels, long position)
+{
+ int result = 0;
+ if(render_engine && render_engine->do_audio)
+ {
+ result = 1;
+ render_engine->get_module_levels(module_levels, position);
+ }
+ return result;
+}
+
+int PlaybackEngine::brender_available(long position)
+{
+ return 0;
+}
+
+void PlaybackEngine::init_cursor(int active)
+{
+}
+
+void PlaybackEngine::init_meters()
+{
+}
+
+void PlaybackEngine::stop_cursor()
+{
+}
+
+
+void PlaybackEngine::init_tracking()
+{
+ tracking_active = !command->single_frame() ? 1 : 0;
+ tracking_position = command->playbackstart;
+ tracking_done->lock("PlaybackEngine::init_tracking");
+ init_cursor(tracking_active);
+ init_meters();
+}
+
+void PlaybackEngine::stop_tracking()
+{
+ tracking_active = 0;
+ stop_cursor();
+ tracking_done->unlock();
+}
+
+void PlaybackEngine::update_tracking(double position)
+{
+ tracking_lock->lock("PlaybackEngine::update_tracking");
+ tracking_position = position;
+// Signal that the timer is accurate.
+ if(tracking_active) tracking_active = 2;
+ tracking_timer.update();
+ tracking_lock->unlock();
+}
+
+double PlaybackEngine::get_tracking_position()
+{
+ double result = 0;
+
+ tracking_lock->lock("PlaybackEngine::get_tracking_position");
+
+
+// Adjust for elapsed time since last update_tracking.
+// But tracking timer isn't accurate until the first update_tracking
+// so wait.
+ if(tracking_active == 2)
+ {
+//printf("PlaybackEngine::get_tracking_position %d %d %d\n", command->get_direction(), tracking_position, tracking_timer.get_scaled_difference(command->get_edl()->session->sample_rate));
+
+
+// Don't interpolate when every frame is played.
+ if(command->get_edl()->session->video_every_frame &&
+ render_engine &&
+ render_engine->do_video)
+ {
+ result = tracking_position;
+ }
+ else
+// Interpolate
+ {
+ double loop_start = command->get_edl()->local_session->loop_start;
+ double loop_end = command->get_edl()->local_session->loop_end;
+ double loop_size = loop_end - loop_start;
+
+ if(command->get_direction() == PLAY_FORWARD)
+ {
+// Interpolate
+ result = tracking_position +
+ command->get_speed() *
+ tracking_timer.get_difference() /
+ 1000.0;
+
+// Compensate for loop
+//printf("PlaybackEngine::get_tracking_position 1 %d\n", command->get_edl()->local_session->loop_playback);
+ if(command->get_edl()->local_session->loop_playback)
+ {
+ while(result > loop_end) result -= loop_size;
+ }
+ }
+ else
+ {
+// Interpolate
+ result = tracking_position -
+ command->get_speed() *
+ tracking_timer.get_difference() /
+ 1000.0;
+
+// Compensate for loop
+ if(command->get_edl()->local_session->loop_playback)
+ {
+ while(result < loop_start) result += loop_size;
+ }
+ }
+
+ }
+ }
+ else
+ result = tracking_position;
+
+ tracking_lock->unlock();
+//printf("PlaybackEngine::get_tracking_position %f %f %d\n", result, tracking_position, tracking_active);
+
+// Adjust for loop
+
+ return result;
+}
+
+void PlaybackEngine::update_transport(int command, int paused)
+{
+// mwindow->gui->lock_window();
+// mwindow->gui->mbuttons->transport->update_gui_state(command, paused);
+// mwindow->gui->unlock_window();
+}
+
+void PlaybackEngine::run()
+{
+ start_lock->unlock();
+
+ do
+ {
+// Wait for current command to finish
+ que->output_lock->lock("PlaybackEngine::run");
+
+ wait_render_engine();
+
+
+// Read the new command
+ que->input_lock->lock("PlaybackEngine::run");
+ if(done) return;
+
+ command->copy_from(&que->command);
+ que->command.reset();
+ que->input_lock->unlock();
+
+//printf("PlaybackEngine::run 1 %d\n", command->command);
+
+
+ switch(command->command)
+ {
+// Parameter change only
+ case COMMAND_NONE:
+// command->command = last_command;
+ perform_change();
+ break;
+
+ case PAUSE:
+ init_cursor(0);
+ pause_lock->lock("PlaybackEngine::run");
+ stop_cursor();
+ break;
+
+ case STOP:
+// No changing
+ break;
+
+ case CURRENT_FRAME:
+ last_command = command->command;
+ perform_change();
+ arm_render_engine();
+// Dispatch the command
+ start_render_engine();
+ break;
+
+ default:
+ last_command = command->command;
+ is_playing_back = 1;
+ if(command->command == SINGLE_FRAME_FWD ||
+ command->command == SINGLE_FRAME_REWIND)
+ {
+ command->playbackstart = get_tracking_position();
+ }
+
+ perform_change();
+ arm_render_engine();
+
+// Start tracking after arming so the tracking position doesn't change.
+// The tracking for a single frame command occurs during PAUSE
+ init_tracking();
+
+// Dispatch the command
+ start_render_engine();
+ break;
+ }
+
+
+//printf("PlaybackEngine::run 100\n");
+ }while(!done);
+}
+
+
+
projects / goodguy / history.git / blobdiff