/[svn]/linuxsampler/trunk/src/drivers/midi/VirtualMidiDevice.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/drivers/midi/VirtualMidiDevice.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1896 by persson, Mon May 4 18:34:44 2009 UTC revision 2385 by schoenebeck, Fri Dec 14 17:41:32 2012 UTC
# Line 1  Line 1 
1  /*  /*
2      Copyright (C) 2008 Christian Schoenebeck      Copyright (C) 2008 - 2012 Christian Schoenebeck
3   */   */
4    
5  #include "VirtualMidiDevice.h"  #include "VirtualMidiDevice.h"
# Line 8  Line 8 
8  #include "../../common/atomic.h"  #include "../../common/atomic.h"
9  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
10    
11  #define MIDI_KEYS       128  #define MIDI_KEYS               128
12    #define MIDI_CONTROLLERS        128
13    
14  // assuming VirtualMidiDevice implementation is only controlled  // assuming VirtualMidiDevice implementation is only controlled
15  // by mouse (and the user not being Billy the Kid)  // by mouse (and the user not being Billy the Kid)
# Line 22  namespace LinuxSampler { Line 23  namespace LinuxSampler {
23          atomic_t pNoteIsActive[MIDI_KEYS]; // status of each key (either active or inactive)          atomic_t pNoteIsActive[MIDI_KEYS]; // status of each key (either active or inactive)
24          atomic_t pNoteOnVelocity[MIDI_KEYS];          atomic_t pNoteOnVelocity[MIDI_KEYS];
25          atomic_t pNoteOffVelocity[MIDI_KEYS];          atomic_t pNoteOffVelocity[MIDI_KEYS];
26            atomic_t ccsChanged; // whether some controller changed at all
27            atomic_t pCCChanged[MIDI_CONTROLLERS]; // which controller(s) changed
28            atomic_t pCCValue[MIDI_CONTROLLERS]; // current value of each controller
29          RingBuffer<VirtualMidiDevice::event_t,false> events;          RingBuffer<VirtualMidiDevice::event_t,false> events;
30    
31          private_data_t() : events(MAX_EVENTS, 0) {}          private_data_t() : events(MAX_EVENTS, 0) {}
# Line 30  namespace LinuxSampler { Line 34  namespace LinuxSampler {
34      VirtualMidiDevice::VirtualMidiDevice() : p(new private_data_t) {      VirtualMidiDevice::VirtualMidiDevice() : p(new private_data_t) {
35          atomic_t zero = ATOMIC_INIT(0);          atomic_t zero = ATOMIC_INIT(0);
36          atomic_t defaultVelocity = ATOMIC_INIT(127);          atomic_t defaultVelocity = ATOMIC_INIT(127);
37            atomic_t defaultCCValue = ATOMIC_INIT(0);
38          p->notesChanged = zero;          p->notesChanged = zero;
39            p->ccsChanged   = zero;
40          for (int i = 0; i < MIDI_KEYS; i++) {          for (int i = 0; i < MIDI_KEYS; i++) {
41              p->pNoteChanged[i]  = zero;              p->pNoteChanged[i]  = zero;
42              p->pNoteIsActive[i] = zero;              p->pNoteIsActive[i] = zero;
43              p->pNoteOnVelocity[i] = defaultVelocity;              p->pNoteOnVelocity[i] = defaultVelocity;
44              p->pNoteOffVelocity[i] = defaultVelocity;              p->pNoteOffVelocity[i] = defaultVelocity;
45                p->pCCChanged[i] = zero;
46                p->pCCValue[i]   = defaultCCValue;
47          }          }
48      }      }
49    
50      VirtualMidiDevice::~VirtualMidiDevice() {      VirtualMidiDevice::~VirtualMidiDevice() {
51          delete p;          delete p;
52      }      }
53        
54        void VirtualMidiDevice::SetMaxEvents(int n) {
55            p->events.resize(n);
56        }
57    
58      bool VirtualMidiDevice::SendNoteOnToSampler(uint8_t Key, uint8_t Velocity) {      bool VirtualMidiDevice::SendNoteOnToSampler(uint8_t Key, uint8_t Velocity) {
59          if (Key >= MIDI_KEYS || Velocity > 127) return false;          if (Key >= MIDI_KEYS || Velocity > 127) return false;
60            if (Velocity == 0) {
61                return SendNoteOffToSampler(Key, Velocity);
62            }
63          event_t ev = { EVENT_TYPE_NOTEON, Key, Velocity };          event_t ev = { EVENT_TYPE_NOTEON, Key, Velocity };
64          if (p->events.write_space() <= 0) return false;          if (p->events.write_space() <= 0) return false;
65          p->events.push(&ev);          p->events.push(&ev);
# Line 58  namespace LinuxSampler { Line 73  namespace LinuxSampler {
73          p->events.push(&ev);          p->events.push(&ev);
74          return true;          return true;
75      }      }
76        
77        bool VirtualMidiDevice::SendCCToSampler(uint8_t Controller, uint8_t Value) {
78            if (Controller >= MIDI_CONTROLLERS || Value > 127) return false;
79            event_t ev = { EVENT_TYPE_CC, Controller, Value };
80            if (p->events.write_space() <= 0) return false;
81            p->events.push(&ev);
82            return true;
83        }
84    
85      bool VirtualMidiDevice::GetMidiEventFromDevice(event_t& Event) {      bool VirtualMidiDevice::GetMidiEventFromDevice(event_t& Event) {
86          return (p->events.pop(&Event) > 0);          return (p->events.pop(&Event) > 0);
# Line 68  namespace LinuxSampler { Line 91  namespace LinuxSampler {
91          atomic_sub(c, &p->notesChanged );          atomic_sub(c, &p->notesChanged );
92          return c;          return c;
93      }      }
94        
95        bool VirtualMidiDevice::ControllersChanged() {
96            int c = atomic_read( &p->ccsChanged );
97            atomic_sub(c, &p->ccsChanged );
98            return c;
99        }
100    
101      bool VirtualMidiDevice::NoteChanged(uint8_t Key) {      bool VirtualMidiDevice::NoteChanged(uint8_t Key) {
102          int c = atomic_read( &(p->pNoteChanged)[Key] );          int c = atomic_read( &(p->pNoteChanged)[Key] );
103          atomic_sub(c, &(p->pNoteChanged)[Key] );          atomic_sub(c, &(p->pNoteChanged)[Key] );
104          return c;          return c;
105      }      }
106        
107        bool VirtualMidiDevice::ControllerChanged(uint8_t Controller) {
108            int c = atomic_read( &(p->pCCChanged)[Controller] );
109            atomic_sub(c, &(p->pCCChanged)[Controller] );
110            return c;
111        }
112    
113      bool VirtualMidiDevice::NoteIsActive(uint8_t Key) {      bool VirtualMidiDevice::NoteIsActive(uint8_t Key) {
114          return atomic_read( &(p->pNoteIsActive)[Key] );          return atomic_read( &(p->pNoteIsActive)[Key] );
# Line 86  namespace LinuxSampler { Line 121  namespace LinuxSampler {
121      uint8_t VirtualMidiDevice::NoteOffVelocity(uint8_t Key) {      uint8_t VirtualMidiDevice::NoteOffVelocity(uint8_t Key) {
122          return atomic_read( &(p->pNoteOffVelocity)[Key] );          return atomic_read( &(p->pNoteOffVelocity)[Key] );
123      }      }
124        
125        uint8_t VirtualMidiDevice::ControllerValue(uint8_t Controller) {
126            return atomic_read( &(p->pCCValue)[Controller] );
127        }
128    
129      void VirtualMidiDevice::SendNoteOnToDevice(uint8_t Key, uint8_t Velocity) {      void VirtualMidiDevice::SendNoteOnToDevice(uint8_t Key, uint8_t Velocity) {
130          if (Key >= MIDI_KEYS) return;          if (Key >= MIDI_KEYS) return;
131            if (Velocity == 0) {
132                SendNoteOffToDevice(Key, Velocity);
133                return;
134            }
135          atomic_set( &(p->pNoteOnVelocity)[Key], Velocity );          atomic_set( &(p->pNoteOnVelocity)[Key], Velocity );
136          atomic_inc( &(p->pNoteIsActive)[Key] );          atomic_inc( &(p->pNoteIsActive)[Key] );
137          atomic_inc( &(p->pNoteChanged)[Key] );          atomic_inc( &(p->pNoteChanged)[Key] );
# Line 98  namespace LinuxSampler { Line 141  namespace LinuxSampler {
141      void VirtualMidiDevice::SendNoteOffToDevice(uint8_t Key, uint8_t Velocity) {      void VirtualMidiDevice::SendNoteOffToDevice(uint8_t Key, uint8_t Velocity) {
142          if (Key >= MIDI_KEYS) return;          if (Key >= MIDI_KEYS) return;
143          atomic_set( &(p->pNoteOffVelocity)[Key], Velocity );          atomic_set( &(p->pNoteOffVelocity)[Key], Velocity );
144          atomic_dec( &(p->pNoteIsActive)[Key] );          if (atomic_read( &(p->pNoteIsActive)[Key] )) // only decrement if not zero
145                atomic_dec( &(p->pNoteIsActive)[Key] );
146          atomic_inc( &(p->pNoteChanged)[Key] );          atomic_inc( &(p->pNoteChanged)[Key] );
147          atomic_inc( &p->notesChanged );          atomic_inc( &p->notesChanged );
148      }      }
149        
150        void VirtualMidiDevice::SendCCToDevice(uint8_t Controller, uint8_t Value) {
151            if (Controller >= MIDI_CONTROLLERS) return;
152            atomic_set( &(p->pCCValue)[Controller], Value );
153            atomic_inc( &(p->pCCChanged)[Controller] );
154            atomic_inc( &p->ccsChanged );
155        }
156    
157  } // namespace LinuxSampler  } // namespace LinuxSampler
Legend:
Removed from v.1896  
changed lines
  Added in v.2385
  ViewVC Help
Powered by ViewVC