some missing midi headers

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1684 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-10-26 18:51:58 +00:00
parent 5cdacbaabb
commit 4b8670624a
5 changed files with 536 additions and 0 deletions
@@ -0,0 +1,141 @@
+/*******************************************************************************
+/
+/	File:		Synth.h
+/
+/	Description:	Interface to the General MIDI synthesizer.
+/
+/	Copyright 1993-98, Be Incorporated, All Rights Reserved.
+/
+*******************************************************************************/
+
+#ifndef _SYNTH_H
+#define _SYNTH_H
+
+#ifndef _BE_BUILD_H
+#include <BeBuild.h>
+#endif
+#include <Entry.h>
+#include <MidiDefs.h>
+#include <OS.h>
+
+typedef enum interpolation_mode
+{
+    B_DROP_SAMPLE = 0,
+    B_2_POINT_INTERPOLATION,
+    B_LINEAR_INTERPOLATION
+  } interpolation_mode;
+
+typedef enum reverb_mode
+{
+	B_REVERB_NONE = 1,		
+	B_REVERB_CLOSET,	
+	B_REVERB_GARAGE,	
+	B_REVERB_BALLROOM,	
+	B_REVERB_CAVERN,	
+	B_REVERB_DUNGEON	
+  } reverb_mode;
+
+typedef void (*synth_controller_hook) (int16 channel,
+									   int16 controller, 
+									   int16 value);
+class BMidiSynth;
+class BMidiSynthFile;
+
+class BSynth 
+{
+ public:
+	BSynth();
+	BSynth(synth_mode synth);
+
+#if !_PR3_COMPATIBLE_
+virtual ~BSynth();
+#else
+	~BSynth();
+#endif
+	
+	status_t 	LoadSynthData(entry_ref *instrumentsFile); 
+	status_t 	LoadSynthData(synth_mode synth);
+	synth_mode SynthMode(void);
+
+	void	Unload(void);
+	bool	IsLoaded(void) const;
+	
+	/* change audio modes*/
+	status_t	SetSamplingRate(int32 sample_rate);
+	int32		SamplingRate() const;
+	
+	status_t	SetInterpolation(interpolation_mode interp_mode);
+	interpolation_mode Interpolation() const;
+	
+	void		SetReverb(reverb_mode rev_mode);
+	reverb_mode	Reverb() const;
+	
+	status_t	EnableReverb(bool reverb_enabled);
+	bool		IsReverbEnabled() const;
+	
+	/* change voice allocation*/
+	status_t	SetVoiceLimits(int16 maxSynthVoices,
+							   int16 maxSampleVoices,
+							   int16 limiterThreshhold);
+	
+	int16		MaxSynthVoices(void) const;
+	int16		MaxSampleVoices(void) const;
+	int16		LimiterThreshhold(void) const;
+	
+	/* get and set the master mix volume. A volume level of 1.0*/
+	/* is normal, and volume level of 4.0 will overdrive 4 times*/
+	void		SetSynthVolume(double theVolume);
+	double		SynthVolume(void) const;
+	
+	void		SetSampleVolume(double theVolume);
+	double		SampleVolume(void) const;
+	
+	/* display feedback information*/
+	/* This will return the number of 16-bit samples stored into the pLeft*/
+	/*  and pRight arrays. Usually 1024. This returns the current data*/
+	/*  points being sent to the hardware.*/
+	status_t		GetAudio(int16 *pLeft, int16 *pRight,
+						 int32 max_samples) const;
+	
+	/* disengage from audio output streams*/
+	void		Pause(void);
+	/* reengage to audio output streams*/
+	void		Resume(void);
+	
+	/* Set a call back on controller events*/
+	void		SetControllerHook(int16 controller,
+								  synth_controller_hook cback);
+	
+	int32		CountClients(void) const;
+
+ private:
+
+virtual	void		_ReservedSynth1();
+virtual	void		_ReservedSynth2();
+virtual	void		_ReservedSynth3();
+virtual	void		_ReservedSynth4();
+
+	friend BMidiSynth;
+	friend BMidiSynthFile;
+
+	int32					fClientCount;
+	void _init();
+	status_t _do_load(synth_mode synth);
+	status_t _load_insts(entry_ref *ref);
+	synth_mode	fMode;
+	int16				fMaxSynthVox;
+	int16				fMaxSampleVox;
+	int16				fLimiter;
+	
+	int32					fSRate;
+	interpolation_mode		fInterp;
+	int32					fModifiers;
+	reverb_mode 			fReverb;
+	sem_id					fSetupLock;
+	uint32					_reserved[4];
+};
+
+extern _IMPEXP_MIDI BSynth *be_synth;
+
+
+#endif