4 * Copyright (C) 1997-2011 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 PLUGINCLIENT_H
23 #define PLUGINCLIENT_H
25 // Base class inherited by all the different types of plugins.
27 #define BCASTDIR "~/.bcast5/"
28 #define MAX_FRAME_BUFFER 1024
33 #include "arraylist.h"
35 #include "condition.h"
36 #include "edlsession.inc"
38 #include "mainprogress.inc"
39 #include "maxbuffers.h"
40 #include "pluginclient.inc"
41 #include "plugincommands.h"
42 #include "pluginserver.inc"
43 #include "samples.inc"
50 extern PluginClient* new_plugin(PluginServer *server);
53 class PluginClientAuto
64 // Convenience functions
66 #define REGISTER_PLUGIN(class_title) \
67 PluginClient* new_plugin(PluginServer *server) \
69 return new class_title(server); \
79 // Prototypes for user to put in class header
80 #define PLUGIN_CLASS_MEMBERS(config_name) \
81 int load_configuration(); \
82 const char* plugin_title(); \
83 PluginClientWindow* new_window(); \
88 // Prototypes for user to put in class header
89 #define PLUGIN_CLASS_MEMBERS2(config_name) \
90 int load_configuration(); \
91 const char* plugin_title(); \
92 PluginClientWindow* new_window(); \
99 #define NEW_WINDOW_MACRO(plugin_class, window_class) \
100 PluginClientWindow* plugin_class::new_window() \
102 return new window_class(this); \
105 // Not all plugins load configuration the same way. Use this to define
107 #define LOAD_CONFIGURATION_MACRO(plugin_class, config_class) \
108 int plugin_class::load_configuration() \
110 KeyFrame *prev_keyframe, *next_keyframe; \
111 prev_keyframe = get_prev_keyframe(get_source_position()); \
112 next_keyframe = get_next_keyframe(get_source_position()); \
114 int64_t next_position = edl_to_local(next_keyframe->position); \
115 int64_t prev_position = edl_to_local(prev_keyframe->position); \
117 config_class old_config, prev_config, next_config; \
118 old_config.copy_from(config); \
119 read_data(prev_keyframe); \
120 prev_config.copy_from(config); \
121 read_data(next_keyframe); \
122 next_config.copy_from(config); \
124 config.interpolate(prev_config, \
126 (next_position == prev_position) ? \
127 get_source_position() : \
129 (next_position == prev_position) ? \
130 get_source_position() + 1 : \
132 get_source_position()); \
134 if(!config.equivalent(old_config)) \
143 class PluginClientWindow : public BC_Window
146 PluginClientWindow(PluginClient *client,
152 PluginClientWindow(const char *title,
160 virtual ~PluginClientWindow();
162 virtual int translation_event();
163 virtual int close_event();
165 PluginClient *client;
171 class PluginClientThread : public Thread
174 PluginClientThread(PluginClient *client);
175 ~PluginClientThread();
178 friend class PluginClient;
180 BC_WindowBase* get_window();
181 PluginClient* get_client();
182 BC_WindowBase *window;
183 PluginClient *client;
186 Condition *init_complete;
191 // Client overrides for GUI update data
192 class PluginClientFrame
195 // Period_d is 1 second
196 PluginClientFrame(int data_size, int period_n, int period_d);
197 virtual ~PluginClientFrame();
210 PluginClient(PluginServer *server);
211 virtual ~PluginClient();
213 friend class PluginClientThread;
214 friend class PluginClientWindow;
216 // Queries for the plugin server.
217 virtual int is_realtime();
218 virtual int is_audio();
219 virtual int is_video();
220 virtual int is_fileio();
221 virtual int is_theme();
222 virtual int uses_gui();
223 virtual int is_multichannel();
224 virtual int is_synthesis();
225 virtual int is_transition();
226 virtual const char* plugin_title(); // return the title of the plugin
227 virtual Theme* new_theme();
228 // Get theme being used by Cinelerra currently. Used by all plugins.
236 // Non realtime signal processors define these.
237 // Give the samplerate of the output for a non realtime plugin.
238 // For realtime plugins give the requested samplerate.
239 virtual int get_samplerate();
240 // Give the framerate of the output for a non realtime plugin.
241 // For realtime plugins give the requested framerate.
242 virtual double get_framerate();
243 virtual int delete_nonrealtime_parameters();
244 virtual int get_parameters(); // get information from user before non realtime processing
245 virtual int64_t get_in_buffers(int64_t recommended_size); // return desired size for input buffers
246 virtual int64_t get_out_buffers(int64_t recommended_size); // return desired size for output buffers
247 virtual int start_loop();
248 virtual int process_loop();
249 virtual int stop_loop();
250 // Hash files are the defaults for rendered plugins
251 virtual int load_defaults(); // load default settings for the plugin
252 virtual int save_defaults(); // save the current settings as defaults
253 BC_Hash* get_defaults();
258 // Realtime commands for signal processors.
259 // These must be defined by the plugin itself.
260 // Set the GUI title identifying the plugin to modules and patches.
262 // cause the plugin to create a new GUI class
263 virtual BC_WindowBase* new_window();
264 // Load the current keyframe. Return 1 if it changed.
265 virtual int load_configuration();
266 // cause the plugin to hide the gui
267 void client_side_close();
268 void update_display_title();
273 // XML keyframes are the defaults for realtime plugins
274 void load_defaults_xml();
275 void save_defaults_xml();
276 // Tell the client if the load is the defaults
279 virtual void update_gui();
280 virtual void save_data(KeyFrame *keyframe) {}; // write the plugin settings to text in text format
281 virtual void read_data(KeyFrame *keyframe) {}; // read the plugin settings from the text
282 int send_hide_gui(); // should be sent when the GUI recieves a close event from the user
283 // Destroys the window but not the thread pointer.
286 int get_configure_change(); // get propogated configuration change from a send_configure_change
288 // Called by plugin server to update GUI with rendered data.
289 void plugin_render_gui(void *data);
290 void plugin_render_gui(void *data, int size);
292 void begin_process_buffer();
293 void end_process_buffer();
295 void plugin_update_gui();
296 virtual int plugin_process_loop(VFrame **buffers, int64_t &write_length) { return 1; };
297 virtual int plugin_process_loop(Samples **buffers, int64_t &write_length) { return 1; };
298 // get parameters depending on video or audio
299 virtual int init_realtime_parameters();
300 // release objects which are required after playback stops
301 virtual void render_stop() {};
302 int get_gui_status();
303 char* get_gui_string();
306 // Used by plugins which need to know where they are.
308 // Get the directory for plugins
309 char* get_plugin_dir();
311 // Return keyframe objects. The position in the resulting object
312 // is relative to the EDL rate. This is the only way to avoid copying the
313 // data for every frame.
314 // If the result is the default keyframe, the keyframe's position is 0.
315 // position - relative to EDL rate or local rate to allow simple
316 // passing of get_source_position.
317 // If -1 the tracking position in the edl is used.
318 // is_local - if 1, the position is converted to the EDL rate.
319 KeyFrame* get_prev_keyframe(int64_t position, int is_local = 1);
320 KeyFrame* get_next_keyframe(int64_t position, int is_local = 1);
321 // get current camera and projector position
322 void get_camera(float *x, float *y, float *z, int64_t position);
323 void get_projector(float *x, float *y, float *z, int64_t position);
324 // When this plugin is adjusted, propogate parameters back to EDL and virtual
325 // console. This gets a keyframe from the EDL, with the position set to the
326 // EDL tracking position.
327 int send_configure_change();
330 // Called from process_buffer
331 // Returns 1 if a GUI is open so OpenGL routines can determine if
337 // Length of source. For effects it's the plugin length. For transitions
338 // it's the transition length. Relative to the requested rate.
339 // The only way to get smooth interpolation is to make all position queries
340 // relative to the requested rate.
341 int64_t get_total_len();
343 // For realtime plugins gets the lowest sample of the plugin in the requested
344 // rate. For others it's the start of the EDL selection in the EDL rate.
345 int64_t get_source_start();
347 // Convert the position relative to the requested rate to the position
348 // relative to the EDL rate. If the argument is < 0, it is not changed.
349 // Used for interpreting keyframes.
350 virtual int64_t local_to_edl(int64_t position);
352 // Convert the EDL position to the local position.
353 virtual int64_t edl_to_local(int64_t position);
355 // For transitions the source_position is the playback position relative
356 // to the start of the transition.
357 // For realtime effects, the start of the most recent process_buffer in forward
358 // and the end of the range to process in reverse. Relative to start of EDL in
359 // the requested rate.
360 int64_t get_source_position();
362 // Get the EDL Session. May return 0 if the server has no edl.
363 EDLSession* get_edlsession();
366 // Get the direction of the most recent process_buffer
369 // Plugin must call this before performing OpenGL operations.
370 // Returns 1 if the user supports opengl buffers.
371 int get_use_opengl();
373 // Get total tracks to process
374 int get_total_buffers();
376 // Get size of buffer to fill in non-realtime plugin
377 int get_buffer_size();
379 // Get interpolation used by EDL from overlayframe.inc
380 int get_interpolation_type();
382 // Get the values from the color picker
389 // Operations for file handlers
390 virtual int open_file() { return 0; };
391 virtual int get_audio_parameters() { return 0; };
392 virtual int get_video_parameters() { return 0; };
393 virtual int check_header(char *path) { return 0; };
394 virtual int open_file(char *path, int wr, int rd) { return 1; };
395 virtual int close_file() { return 0; };
401 // All plugins define these.
402 PluginClientThread* get_thread();
406 // Non realtime operations for signal processors.
407 virtual int plugin_start_loop(int64_t start,
411 int plugin_stop_loop();
412 int plugin_process_loop();
413 MainProgressBar* start_progress(char *string, int64_t length);
414 // get samplerate of EDL
415 int get_project_samplerate();
416 // get framerate of EDL
417 double get_project_framerate();
418 // Total number of processors - 1
419 int get_project_smp();
420 int get_aspect_ratio(float &aspect_w, float &aspect_h);
423 int write_frames(int64_t total_frames); // returns 1 for failure / tells the server that all output channel buffers are ready to go
424 int write_samples(int64_t total_samples); // returns 1 for failure / tells the server that all output channel buffers are ready to go
425 virtual int plugin_get_parameters();
426 const char* get_defaultdir(); // Directory defaults should be stored in
427 void set_interactive();
429 // Realtime operations.
431 // Extension of plugin_run for derived plugins
432 virtual int plugin_command_derived(int plugin_command) { return 0; };
433 int plugin_get_range();
434 int plugin_init_realtime(int realtime_priority,
435 int total_in_buffers,
439 // GUI updating wrappers for realtime plugins
440 // Append frame to queue for next send_frame_buffer
441 void add_gui_frame(PluginClientFrame *frame);
445 virtual void render_gui(void *data);
446 virtual void render_gui(void *data, int size);
448 // Called by client to get the total number of frames to draw in update_gui
449 int get_gui_update_frames();
450 // Get GUI frame from frame_buffer. Client must delete it.
451 PluginClientFrame* get_gui_frame();
453 // Called by client to cause GUI to be rendered with data.
454 void send_render_gui();
455 void send_render_gui(void *data);
456 void send_render_gui(void *data, int size);
465 // create pointers to buffers of the plugin's type before realtime rendering
466 virtual int delete_buffer_ptrs();
471 // communication convenience routines for the base class
472 int stop_gui_client();
473 int save_data_client();
474 int load_data_client();
475 int set_string_client(char *string); // set the string identifying the plugin
476 int send_cancelled(); // non realtime plugin sends when cancelled
478 // ================================= Buffers ===============================
480 // number of double buffers for each channel
481 ArrayList<int> double_buffers_in;
482 ArrayList<int> double_buffers_out;
483 // When arming buffers need to know the offsets in all the buffers and which
484 // double buffers for each channel before rendering.
485 ArrayList<int64_t> offset_in_render;
486 ArrayList<int64_t> offset_out_render;
487 ArrayList<int64_t> double_buffer_in_render;
488 ArrayList<int64_t> double_buffer_out_render;
489 // total size of each buffer depends on if it's a master or node
490 ArrayList<int64_t> realtime_in_size;
491 ArrayList<int64_t> realtime_out_size;
493 // ================================= Automation ===========================
495 ArrayList<PluginClientAuto> automation;
497 // ================================== Messages ===========================
498 char gui_string[BCTEXTLEN]; // string identifying module and plugin
499 int master_gui_on; // Status of the master gui plugin
500 int client_gui_on; // Status of this client's gui
502 int show_initially; // set to show a realtime plugin initially
503 // range in project for processing
505 int interactive; // for the progress bar plugin
507 int total_out_buffers; // total send buffers allocated by the server
508 int total_in_buffers; // total recieve buffers allocated by the server
509 int wr, rd; // File permissions for fileio plugins.
511 // These give the largest fragment the plugin is expected to handle.
512 // size of a send buffer to the server
513 int64_t out_buffer_size;
514 // size of a recieve buffer from the server
515 int64_t in_buffer_size;
520 // Direction of most recent process_buffer
523 // Operating system scheduling
524 int realtime_priority;
526 // Position relative to start of EDL in requested rate. Calculated for every process
527 // command. Used for keyframes.
528 int64_t source_position;
529 // For realtime plugins gets the lowest sample of the plugin in the requested
530 // rate. For others it's always 0.
531 int64_t source_start;
532 // Length of source. For effects it's the plugin length. For transitions
533 // it's the transition length. Relative to the requested rate.
535 // Total number of processors available - 1
537 PluginServer *server;
539 PluginClientThread *thread;
541 // Frames for updating GUI
542 ArrayList<PluginClientFrame*> frame_buffer;
543 // Time of last GUI update
549 // Temporaries set in new_window
550 int window_x, window_y;
552 // Asset *asset; // Point to asset structure in shared memory