2 Copyright (C) 2004 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_panner_h__
21 #define __ardour_panner_h__
28 #include <sigc++/signal.h>
30 #include "pbd/stateful.h"
31 #include "pbd/controllable.h"
33 #include "ardour/types.h"
34 #include "ardour/automation_control.h"
35 #include "ardour/processor.h"
45 class StreamPanner : public sigc::trackable, public PBD::Stateful
48 StreamPanner (Panner& p, Evoral::Parameter param);
51 void set_muted (bool yn);
52 bool muted() const { return _muted; }
54 void set_position (float x, bool link_call = false);
55 void set_position (float x, float y, bool link_call = false);
56 void set_position (float x, float y, float z, bool link_call = false);
58 void get_position (float& xpos) const { xpos = x; }
59 void get_position (float& xpos, float& ypos) const { xpos = x; ypos = y; }
60 void get_position (float& xpos, float& ypos, float& zpos) const { xpos = x; ypos = y; zpos = z; }
62 void get_effective_position (float& xpos) const { xpos = effective_x; }
63 void get_effective_position (float& xpos, float& ypos) const { xpos = effective_x; ypos = effective_y; }
64 void get_effective_position (float& xpos, float& ypos, float& zpos) const { xpos = effective_x; ypos = effective_y; zpos = effective_z; }
66 /* the basic StreamPanner API */
68 virtual void distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes) = 0;
69 virtual void distribute_automated (AudioBuffer& src, BufferSet& obufs,
70 nframes_t start, nframes_t end, nframes_t nframes, pan_t** buffers) = 0;
72 boost::shared_ptr<AutomationControl> pan_control() { return _control; }
74 sigc::signal<void> Changed; /* for position */
75 sigc::signal<void> StateChanged; /* for mute */
77 int set_state (const XMLNode&);
78 virtual XMLNode& state (bool full_state) = 0;
80 Panner & get_parent() { return parent; }
82 /* old school automation loading */
84 virtual int load (std::istream&, std::string path, uint32_t&) = 0;
94 /* these are for automation. they store the last value
95 used by the most recent process() cycle.
104 boost::shared_ptr<AutomationControl> _control;
106 void add_state (XMLNode&);
107 virtual void update () = 0;
110 class BaseStereoPanner : public StreamPanner
113 BaseStereoPanner (Panner&, Evoral::Parameter param);
114 ~BaseStereoPanner ();
116 /* this class just leaves the pan law itself to be defined
117 by the update(), distribute_automated()
118 methods. derived classes also need a factory method
119 and a type name. See EqualPowerStereoPanner as an example.
122 void distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes);
124 /* old school automation loading */
126 int load (std::istream&, std::string path, uint32_t&);
137 class EqualPowerStereoPanner : public BaseStereoPanner
140 EqualPowerStereoPanner (Panner&, Evoral::Parameter param);
141 ~EqualPowerStereoPanner ();
143 void distribute_automated (AudioBuffer& src, BufferSet& obufs,
144 nframes_t start, nframes_t end, nframes_t nframes, pan_t** buffers);
146 void get_current_coefficients (pan_t*) const;
147 void get_desired_coefficients (pan_t*) const;
149 static StreamPanner* factory (Panner&, Evoral::Parameter param);
150 static std::string name;
152 XMLNode& state (bool full_state);
153 XMLNode& get_state (void);
154 int set_state (const XMLNode&);
160 class Multi2dPanner : public StreamPanner
163 Multi2dPanner (Panner& parent, Evoral::Parameter);
166 void distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes);
167 void distribute_automated (AudioBuffer& src, BufferSet& obufs,
168 nframes_t start, nframes_t end, nframes_t nframes, pan_t** buffers);
170 static StreamPanner* factory (Panner&, Evoral::Parameter);
171 static std::string name;
173 XMLNode& state (bool full_state);
174 XMLNode& get_state (void);
175 int set_state (const XMLNode&);
177 /* old school automation loading */
179 int load (std::istream&, std::string path, uint32_t&);
186 class Panner : public SessionObject, public AutomatableControls
195 Output (float xp, float yp)
196 : x (xp), y (yp), current_pan (0.0f), desired_pan (0.f) {}
200 //Panner (std::string name, Session&, int _num_bufs);
201 Panner (std::string name, Session&);
204 void clear_panners ();
205 bool empty() const { return _streampanners.empty(); }
207 void set_automation_state (AutoState);
208 AutoState automation_state() const;
209 void set_automation_style (AutoStyle);
210 AutoStyle automation_style() const;
211 bool touching() const;
213 bool can_support_io_configuration (const ChanCount& /*in*/, ChanCount& /*out*/) const { return true; };
215 /// The fundamental Panner function
216 void run (BufferSet& src, BufferSet& dest, sframes_t start_frame, sframes_t end_frames, nframes_t nframes);
218 //void* get_inline_gui() const = 0;
219 //void* get_full_gui() const = 0;
221 bool bypassed() const { return _bypassed; }
222 void set_bypassed (bool yn);
224 StreamPanner* add ();
225 void remove (uint32_t which);
226 void reset (uint32_t noutputs, uint32_t npans);
227 void reset_streampanner (uint32_t which_panner);
228 void reset_to_default ();
230 XMLNode& get_state (void);
231 XMLNode& state (bool full);
232 int set_state (const XMLNode&);
234 static bool equivalent (pan_t a, pan_t b) {
235 return fabsf (a - b) < 0.002; // about 1 degree of arc for a stereo panner
238 void move_output (uint32_t, float x, float y);
239 uint32_t nouts() const { return outputs.size(); }
240 Output& output (uint32_t n) { return outputs[n]; }
242 std::vector<Output> outputs;
249 LinkDirection link_direction() const { return _link_direction; }
250 void set_link_direction (LinkDirection);
252 bool linked() const { return _linked; }
253 void set_linked (bool yn);
255 StreamPanner &streampanner( uint32_t n ) const { assert( n < _streampanners.size() ); return *_streampanners[n]; }
256 uint32_t npanners() const { return _streampanners.size(); }
258 sigc::signal<void> Changed;
259 sigc::signal<void> LinkStateChanged;
260 sigc::signal<void> StateChanged; /* for bypass */
262 /* only StreamPanner should call these */
264 void set_position (float x, StreamPanner& orig);
265 void set_position (float x, float y, StreamPanner& orig);
266 void set_position (float x, float y, float z, StreamPanner& orig);
268 /* old school automation */
272 struct PanControllable : public AutomationControl {
273 PanControllable (Session& s, std::string name, Panner& p, Evoral::Parameter param)
274 : AutomationControl (s, param,
275 boost::shared_ptr<AutomationList>(new AutomationList(param)), name)
277 { assert(param.type() != NullAutomation); }
279 AutomationList* alist() { return (AutomationList*)_list.get(); }
282 void set_value (float);
283 float get_value (void) const;
286 boost::shared_ptr<AutomationControl> pan_control (int id, int chan=0) {
287 return automation_control(Evoral::Parameter (PanAutomation, chan, id));
290 boost::shared_ptr<const AutomationControl> pan_control (int id, int chan=0) const {
291 return automation_control(Evoral::Parameter (PanAutomation, chan, id));
295 /* disallow copy construction */
296 Panner (Panner const &);
298 void distribute_no_automation(BufferSet& src, BufferSet& dest, nframes_t nframes, gain_t gain_coeff);
299 std::vector<StreamPanner*> _streampanners;
300 uint32_t current_outs;
303 LinkDirection _link_direction;
305 static float current_automation_version_number;
307 /* old school automation handling */
309 std::string automation_path;
312 } // namespace ARDOUR
314 #endif /*__ardour_panner_h__ */