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 #ifndef RENDERENGINE_H
23 #define RENDERENGINE_H
28 #include "arender.inc"
29 #include "audiodevice.inc"
33 #include "channel.inc"
34 #include "channeldb.inc"
35 #include "condition.inc"
37 #include "mwindow.inc"
38 #include "playbackengine.inc"
39 #include "pluginserver.inc"
40 #include "preferences.inc"
42 #include "transportque.inc"
43 #include "videodevice.inc"
44 #include "vrender.inc"
46 class RenderEngine : public Thread
49 RenderEngine(PlaybackEngine *playback_engine,
50 Preferences *preferences,
56 void create_render_threads();
57 void arm_render_threads();
58 void start_render_threads();
59 void wait_render_threads();
60 void interrupt_playback();
64 int brender_available(int position, int direction);
65 double get_tracking_position();
66 CICache* get_acache();
67 CICache* get_vcache();
68 void set_acache(CICache *cache);
69 void set_vcache(CICache *cache);
70 // Get levels for tracking
71 void get_output_levels(double *levels, int64_t position);
72 void get_module_levels(ArrayList<double> *module_levels, int64_t position);
76 // Sends the command sequence, compensating for network latency
77 int arm_command(TransportCommand *command);
83 // return position to synchronize video against
84 int64_t sync_position();
85 // Called by VRender to reset the timers once the first frame is done.
86 void reset_sync_position();
88 // Update preferences window
89 void update_framerate(float framerate);
92 TransportCommand *command;
93 // Pointer to playback config for one head
94 PlaybackConfig *config;
95 // Defined only for the master render engine
96 PlaybackEngine *playback_engine;
97 // Copy of preferences
98 Preferences *preferences;
99 // Canvas if being used for CWindow
103 // Lock out new commands until completion
104 Condition *input_lock;
105 // Lock out interrupts until started
106 Condition *start_lock;
107 Condition *output_lock;
108 Condition *render_active;
109 // Lock out audio and synchronization timers until first frame is done
110 Condition *first_frame_lock;
111 // Lock out interrupts before and after renderengine is active
112 Condition *interrupt_lock;
116 // If nested, the devices are owned by someone else
123 // Timer for synchronization without audio
125 // If the termination came from interrupt or end of selection
128 // Samples in audio buffer to process
129 int64_t fragment_len;
130 // Samples to send to audio device after speed adjustment
131 int64_t adjusted_fragment_len;
132 // CICaches for use if no playbackengine exists
133 CICache *audio_cache, *video_cache;
136 // constructing with an audio device forces output buffer allocation
137 // constructing without an audio device puts in one buffer at a time mode
138 RenderEngine(MWindow *mwindow,
139 AudioDevice *audio = 0,
140 VideoDevice *video = 0,
141 PlaybackEngine *playbackengine = 0);
143 void reset_parameters();
145 // buffersize is in samples
146 void arm_playback_audio(int64_t input_length,
147 int64_t amodule_render_fragment,
148 int64_t playback_buffer,
149 int64_t output_length);
151 void arm_playback_video(int every_frame,
153 int64_t output_length,
159 // start video since vrender is the master
163 // information for playback
164 int follow_loop; // loop if mwindow is looped
165 int infinite; // don't stop rendering at the end of the range or loops
167 int64_t start_position; // lowest numbered sample in playback range
168 int64_t end_position; // highest numbered sample in playback range
169 int64_t current_sample;
171 // This is created in the first arm_command and not changed until deletion.
172 // The EDL in the command changes & pointers in it should not be referenced.