4b8670624a
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1684 a95241bf-73f2-0310-859d-f6bbb57e9c96
142 lines
3.2 KiB
C++
142 lines
3.2 KiB
C++
/*******************************************************************************
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/
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/ File: Synth.h
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/
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/ Description: Interface to the General MIDI synthesizer.
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/
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/ Copyright 1993-98, Be Incorporated, All Rights Reserved.
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/
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*******************************************************************************/
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#ifndef _SYNTH_H
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#define _SYNTH_H
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#ifndef _BE_BUILD_H
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#include <BeBuild.h>
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#endif
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#include <Entry.h>
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#include <MidiDefs.h>
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#include <OS.h>
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typedef enum interpolation_mode
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{
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B_DROP_SAMPLE = 0,
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B_2_POINT_INTERPOLATION,
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B_LINEAR_INTERPOLATION
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} interpolation_mode;
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typedef enum reverb_mode
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{
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B_REVERB_NONE = 1,
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B_REVERB_CLOSET,
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B_REVERB_GARAGE,
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B_REVERB_BALLROOM,
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B_REVERB_CAVERN,
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B_REVERB_DUNGEON
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} reverb_mode;
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typedef void (*synth_controller_hook) (int16 channel,
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int16 controller,
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int16 value);
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class BMidiSynth;
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class BMidiSynthFile;
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class BSynth
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{
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public:
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BSynth();
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BSynth(synth_mode synth);
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#if !_PR3_COMPATIBLE_
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virtual ~BSynth();
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#else
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~BSynth();
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#endif
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status_t LoadSynthData(entry_ref *instrumentsFile);
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status_t LoadSynthData(synth_mode synth);
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synth_mode SynthMode(void);
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void Unload(void);
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bool IsLoaded(void) const;
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/* change audio modes*/
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status_t SetSamplingRate(int32 sample_rate);
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int32 SamplingRate() const;
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status_t SetInterpolation(interpolation_mode interp_mode);
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interpolation_mode Interpolation() const;
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void SetReverb(reverb_mode rev_mode);
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reverb_mode Reverb() const;
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status_t EnableReverb(bool reverb_enabled);
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bool IsReverbEnabled() const;
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/* change voice allocation*/
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status_t SetVoiceLimits(int16 maxSynthVoices,
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int16 maxSampleVoices,
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int16 limiterThreshhold);
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int16 MaxSynthVoices(void) const;
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int16 MaxSampleVoices(void) const;
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int16 LimiterThreshhold(void) const;
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/* get and set the master mix volume. A volume level of 1.0*/
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/* is normal, and volume level of 4.0 will overdrive 4 times*/
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void SetSynthVolume(double theVolume);
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double SynthVolume(void) const;
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void SetSampleVolume(double theVolume);
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double SampleVolume(void) const;
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/* display feedback information*/
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/* This will return the number of 16-bit samples stored into the pLeft*/
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/* and pRight arrays. Usually 1024. This returns the current data*/
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/* points being sent to the hardware.*/
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status_t GetAudio(int16 *pLeft, int16 *pRight,
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int32 max_samples) const;
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/* disengage from audio output streams*/
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void Pause(void);
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/* reengage to audio output streams*/
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void Resume(void);
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/* Set a call back on controller events*/
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void SetControllerHook(int16 controller,
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synth_controller_hook cback);
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int32 CountClients(void) const;
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private:
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virtual void _ReservedSynth1();
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virtual void _ReservedSynth2();
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virtual void _ReservedSynth3();
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virtual void _ReservedSynth4();
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friend BMidiSynth;
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friend BMidiSynthFile;
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int32 fClientCount;
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void _init();
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status_t _do_load(synth_mode synth);
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status_t _load_insts(entry_ref *ref);
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synth_mode fMode;
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int16 fMaxSynthVox;
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int16 fMaxSampleVox;
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int16 fLimiter;
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int32 fSRate;
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interpolation_mode fInterp;
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int32 fModifiers;
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reverb_mode fReverb;
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sem_id fSetupLock;
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uint32 _reserved[4];
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};
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extern _IMPEXP_MIDI BSynth *be_synth;
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#endif
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