/[svn]/linuxsampler/trunk/src/audiothread.h
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revision 32 by schoenebeck, Tue Feb 3 13:21:19 2004 UTC revision 33 by schoenebeck, Mon Feb 16 19:30:42 2004 UTC
# Line 38  Line 38 
38    
39  #define PITCHBEND_SEMITONES             12  #define PITCHBEND_SEMITONES             12
40  #define MAX_AUDIO_VOICES                64  #define MAX_AUDIO_VOICES                64
 #define MAX_EVENTS_PER_FRAGMENT         1024  
41    
42  // preload 64k samples = 128kB of data in RAM for 16 bit mono samples  // preload 64k samples = 128kB of data in RAM for 16 bit mono samples
43  #define NUM_RAM_PRELOAD_SAMPLES 32768  #define NUM_RAM_PRELOAD_SAMPLES 32768
# Line 66  class AudioThread { Line 65  class AudioThread {
65      protected:      protected:
66          struct midi_key_info_t {          struct midi_key_info_t {
67              RTEList<Voice>*                      pActiveVoices;         ///< Contains the active voices associated with the MIDI key.              RTEList<Voice>*                      pActiveVoices;         ///< Contains the active voices associated with the MIDI key.
             Voice*                               pSustainPtr;           ///< Points to the voice element in the active voice list which has not received a note-off yet (this pointer is needed for sustain pedal handling)  
             bool                                 Sustained;             ///< Is true if the MIDI key is currently sustained, thus if Note-off arrived while sustain pedal pressed.  
68              bool                                 KeyPressed;            ///< Is true if the respective MIDI key is currently pressed.              bool                                 KeyPressed;            ///< Is true if the respective MIDI key is currently pressed.
69              uint*                                pSustainPoolNode;      ///< FIXME: hack to allow fast deallocation of the key from the sustained key pool              bool                                 Active;                ///< If the key contains active voices.
70                uint*                                pSelf;                 ///< hack to allow fast deallocation of the key from the list of active keys
71                RTEList<ModulationSystem::Event>*    pEvents;               ///< Key specific events (only Note-on, Note-off and sustain pedal currently)
72          };          };
73    
74          RingBuffer<ModulationSystem::Event>*     pEventQueue;           ///< Input event queue.          RingBuffer<ModulationSystem::Event>*     pEventQueue;           ///< Input event queue.
75          float*                                   pAudioSumBuffer[2];    ///< Audio sum of all voices (32 bit, index 0 = left channel, index 1 = right channel)          float*                                   pAudioSumBuffer[2];    ///< Audio sum of all voices (32 bit, index 0 = left channel, index 1 = right channel)
76          midi_key_info_t                          pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key          midi_key_info_t                          pMIDIKeyInfo[128];     ///< Contains all active voices sorted by MIDI key number and other informations to the respective MIDI key
         /* ActiveVoicePool is a memory pool of limited size (size=MAX VOICES) of active voices.  
            it can be allocated dynamically in real time and the allocated elements can be added to  
            the linked lists represented by ActiveVoices[MIDIKey]. This means we can have unlimited  
            active voices per key. This if for example useful to manage the sustain pedal messages  
          */  
77          RTELMemoryPool<Voice>*                   pVoicePool;            ///< Contains all voices that can be activated.          RTELMemoryPool<Voice>*                   pVoicePool;            ///< Contains all voices that can be activated.
78          RTELMemoryPool<uint>*                    pSustainedKeyPool;     ///< Contains the MIDI key numbers of all currently sustained keys.          RTELMemoryPool<uint>*                    pActiveKeys;           ///< Holds all keys in it's allocation list with active voices.
79          RTELMemoryPool<ModulationSystem::Event>* pEventPool;            ///< Contains all Event objects that can be used.          RTELMemoryPool<ModulationSystem::Event>* pEventPool;            ///< Contains all Event objects that can be used.
80          RTEList<ModulationSystem::Event>*        pEvents;               ///< All events for the current audio fragment.          RTEList<ModulationSystem::Event>*        pEvents;               ///< All events for the current audio fragment.
81          RTEList<ModulationSystem::Event>*        pCCEvents[ModulationSystem::destination_count];  ///< Control change events for the current audio fragment.          RTEList<ModulationSystem::Event>*        pCCEvents[ModulationSystem::destination_count];  ///< Control change events for the current audio fragment.

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