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engine/audio/private/snd_dev_common.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Device Common Routines
+//
+//=====================================================================================//
+
+#ifndef SND_DEV_COMMON_H
+#define SND_DEV_COMMON_H
+#pragma once
+
+class CAudioDeviceBase : public IAudioDevice
+{
+public:	
+	virtual bool		IsActive( void ) { return false; }
+	virtual bool		Init( void ) { return false; }
+	virtual void		Shutdown( void ) {}
+	virtual void		Pause( void ) {}
+	virtual void		UnPause( void ) {}
+	virtual float		MixDryVolume( void ) { return 0; }
+	virtual bool		Should3DMix( void ) { return m_bSurround; }
+	virtual void		StopAllSounds( void ) {}
+
+	virtual int			PaintBegin( float, int soundtime, int paintedtime ) { return 0; }
+	virtual void		PaintEnd( void ) {}
+
+	virtual void		SpatializeChannel( int volume[CCHANVOLUMES/2], int master_vol, const Vector& sourceDir, float gain, float mono );
+	virtual void		ApplyDSPEffects( int idsp, portable_samplepair_t *pbuffront, portable_samplepair_t *pbufrear, portable_samplepair_t *pbufcenter, int samplecount );
+	virtual int			GetOutputPosition( void ) { return 0; }
+	virtual void		ClearBuffer( void ) {}
+	virtual void		UpdateListener( const Vector& position, const Vector& forward, const Vector& right, const Vector& up ) {}
+
+	virtual void		MixBegin( int sampleCount );
+	virtual void		MixUpsample( int sampleCount, int filtertype );
+
+	virtual void		Mix8Mono( channel_t *pChannel, char *pData, int outputOffset, int inputOffset, fixedint rateScaleFix, int outCount, int timecompress );
+	virtual void		Mix8Stereo( channel_t *pChannel, char *pData, int outputOffset, int inputOffset, fixedint rateScaleFix, int outCount, int timecompress );
+	virtual void		Mix16Mono( channel_t *pChannel, short *pData, int outputOffset, int inputOffset, fixedint rateScaleFix, int outCount, int timecompress );
+	virtual void		Mix16Stereo( channel_t *pChannel, short *pData, int outputOffset, int inputOffset, fixedint rateScaleFix, int outCount, int timecompress );
+
+	virtual void		ChannelReset( int entnum, int channelIndex, float distanceMod ) {}
+	virtual void		TransferSamples( int end ) {}
+	
+	virtual const char *DeviceName( void )			{ return NULL; }
+	virtual int			DeviceChannels( void )		{ return 0; }
+	virtual int			DeviceSampleBits( void )	{ return 0; }
+	virtual int			DeviceSampleBytes( void )	{ return 0; }
+	virtual int			DeviceDmaSpeed( void )		{ return 1; }
+	virtual int			DeviceSampleCount( void )	{ return 0; }
+
+	virtual bool		IsSurround( void )			{ return m_bSurround; }
+	virtual bool		IsSurroundCenter( void )	{ return m_bSurroundCenter; }
+	virtual bool		IsHeadphone( void )			{ return m_bHeadphone; }
+
+	bool				m_bSurround;
+	bool				m_bSurroundCenter;
+	bool				m_bHeadphone;
+};
+
+#endif // SND_DEV_COMMON_H