Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / playbackengine.h

diff --git a/cinelerra-5.1/cinelerra/playbackengine.h b/cinelerra-5.1/cinelerra/playbackengine.h
new file mode 100644 (file)
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+++ b/cinelerra-5.1/cinelerra/playbackengine.h
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+
+/*
+ * 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
+ * 
+ */
+
+#ifndef PLAYBACKENGINE_H
+#define PLAYBACKENGINE_H
+
+#include "arraylist.h"
+#include "audiodevice.inc"
+#include "cache.inc"
+#include "canvas.inc"
+#include "channeldb.inc"
+#include "condition.inc"
+#include "bchash.inc"
+#include "edl.inc"
+#include "mwindow.inc"
+#include "maxchannels.h"
+#include "mutex.inc"
+#include "tracking.inc"
+#include "preferences.inc"
+#include "renderengine.inc"
+#include "thread.h"
+#include "bctimer.h"
+#include "transportque.inc"
+
+class PlaybackEngine : public Thread
+{
+public:
+       PlaybackEngine(MWindow *mwindow, Canvas *output);
+       virtual ~PlaybackEngine();
+
+       void create_objects();
+       virtual int create_render_engine();
+       void delete_render_engine();
+       void arm_render_engine();
+       void start_render_engine();
+       void wait_render_engine();
+       void create_cache();
+       void perform_change();
+       void sync_parameters(EDL *edl);
+// Set wait_tracking for events that change the cursor location but
+// be sure to unlock the windows
+       void interrupt_playback(int wait_tracking = 0);
+// Get levels for tracking.  Return 0 if no audio.
+       int get_output_levels(double *levels, long position);
+       int get_module_levels(ArrayList<double> *module_levels, long position);
+// The MWindow starts the playback cursor loop
+// The other windows start a slider loop
+// For pausing only the cursor is run
+       virtual void init_cursor(int active);
+       virtual void stop_cursor();
+       virtual int brender_available(long position);
+// For normal playback tracking and the cursor are started
+       virtual void init_tracking();
+       virtual void stop_tracking();
+       virtual void init_meters();
+// The playback cursor calls this to calculate the current tracking position
+       virtual double get_tracking_position();
+// Reset the transport after completion
+       virtual void update_transport(int command, int paused);
+// The render engines call this to update tracking variables in the playback engine.
+       void update_tracking(double position);
+// Get the output channel table for the current device or 0 if none exists.
+       ChannelDB* get_channeldb();
+
+       void run();
+
+// Maintain caches through console changes
+       CICache *audio_cache, *video_cache;
+// Maintain playback cursor on GUI
+       int tracking_active;
+// Tracking variables updated by render engines
+       double tracking_position;
+// Not accurate until the first update_tracking, at which time
+// tracking_active is incremented to 2.
+       Timer tracking_timer;
+// Lock access to tracking data
+       Mutex *tracking_lock;
+// Lock access to renderengine between interrupt and deletion
+       Mutex *renderengine_lock;
+// Block returns until tracking loop is finished
+       Condition *tracking_done;
+// Pause the main loop for the PAUSE command
+       Condition *pause_lock;
+// Wait until thread has started
+       Condition *start_lock;
+
+       MWindow *mwindow;
+       Canvas *output;
+// Copy of main preferences
+       Preferences *preferences;
+// Next command
+       TransportQue *que;
+// Currently executing command
+       TransportCommand *command;
+// Last command which affected transport
+       int last_command;
+       int done;
+       int do_cwindow;
+// Render engine
+       RenderEngine *render_engine;
+
+// Used by label commands to get current position
+       int is_playing_back;
+
+// General purpose debugging register
+       int debug;
+};
+
+
+
+
+
+#endif