libs/ardour/ardour/redirect.h

   1 /*
   2     Copyright (C) 2001 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #ifndef __ardour_redirect_h__
  21 #define __ardour_redirect_h__
  22
  23 #include <string>
  24 #include <vector>
  25 #include <set>
  26 #include <boost/shared_ptr.hpp>
  27 #include <sigc++/signal.h>
  28
  29 #include <glibmm/thread.h>
  30
  31 #include <pbd/undo.h>
  32
  33 #include <ardour/ardour.h>
  34 #include <ardour/io.h>
  35 #include <ardour/automation_event.h>
  36
  37 using std::set;
  38 using std::string;
  39 using std::vector;
  40
  41 class XMLNode;
  42
  43 namespace ARDOUR {
  44
  45 class Session;
  46
  47 class Redirect : public IO
  48 {
  49   public:
  50         static const string state_node_name;
  51
  52         Redirect (Session&, const string& name, Placement,
  53                   int input_min = -1, int input_max = -1, int output_min = -1, int output_max = -1);
  54         Redirect (const Redirect&);
  55         virtual ~Redirect ();
  56
  57         static boost::shared_ptr<Redirect> clone (boost::shared_ptr<const Redirect>);
  58
  59         bool active () const { return _active; }
  60         void set_active (bool yn, void *src);
  61
  62         virtual uint32_t output_streams() const { return n_outputs(); }
  63         virtual uint32_t input_streams () const { return n_inputs(); }
  64         virtual uint32_t natural_output_streams() const { return n_outputs(); }
  65         virtual uint32_t natural_input_streams () const { return n_inputs(); }
  66
  67         uint32_t sort_key() const { return _sort_key; }
  68         void set_sort_key (uint32_t key);
  69
  70         Placement placement() const { return _placement; }
  71         void set_placement (Placement, void *src);
  72
  73         virtual void run (vector<Sample *>& ibufs, uint32_t nbufs, nframes_t nframes) = 0;
  74         virtual void activate () = 0;
  75         virtual void deactivate () = 0;
  76         virtual void flush () = 0;
  77         virtual nframes_t latency() { return 0; }
  78
  79         virtual void set_block_size (nframes_t nframes) {}
  80         virtual bool requires_fixed_size_buffers () const { return false; }
  81
  82         sigc::signal<void,Redirect*,void*> active_changed;
  83         sigc::signal<void,Redirect*,void*> placement_changed;
  84         sigc::signal<void,Redirect*,bool>  AutomationPlaybackChanged;
  85         sigc::signal<void,Redirect*,uint32_t> AutomationChanged;
  86
  87         static sigc::signal<void,Redirect*> RedirectCreated;
  88
  89         XMLNode& state (bool full);
  90         XMLNode& get_state (void);
  91         int set_state (const XMLNode&);
  92
  93         void *get_gui () const { return _gui; }
  94         void  set_gui (void *p) { _gui = p; }
  95
  96         virtual string describe_parameter (uint32_t which);
  97         virtual float default_parameter_value (uint32_t which) {
  98                 return 1.0f;
  99         }
 100
 101         void what_has_automation (set<uint32_t>&) const;
 102         void what_has_visible_automation (set<uint32_t>&) const;
 103         const set<uint32_t>& what_can_be_automated () const { return can_automate_list; }
 104
 105         void mark_automation_visible (uint32_t, bool);
 106
 107         AutomationList& automation_list (uint32_t);
 108         bool find_next_event (nframes_t, nframes_t, ControlEvent&) const;
 109
 110         virtual void transport_stopped (nframes_t frame) {};
 111
 112   protected:
 113         /* children may use this stuff as they see fit */
 114
 115         std::vector<AutomationList*> parameter_automation;
 116         set<uint32_t> visible_parameter_automation;
 117
 118         mutable Glib::Mutex _automation_lock;
 119
 120         void can_automate (uint32_t);
 121         set<uint32_t> can_automate_list;
 122
 123         virtual void automation_list_creation_callback (uint32_t, AutomationList&) {}
 124
 125         int set_automation_state (const XMLNode&);
 126         XMLNode& get_automation_state ();
 127
 128   private:
 129         bool _active;
 130         Placement _placement;
 131         uint32_t _sort_key;
 132         void* _gui;  /* generic, we don't know or care what this is */
 133
 134         int old_set_automation_state (const XMLNode&);
 135         int load_automation (std::string path);
 136 };
 137
 138 } // namespace ARDOUR
 139
 140 #endif /* __ardour_redirect_h__ */