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neo/sound/XAudio2/XA2_SoundHardware.h

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+/*
+===========================================================================
+
+Doom 3 BFG Edition GPL Source Code
+Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  
+
+Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+#ifndef __XA_SOUNDHARDWARE_H__
+#define __XA_SOUNDHARDWARE_H__
+
+class idSoundSample_XAudio2;
+class idSoundVoice_XAudio2;
+
+/*
+================================================
+idSoundEngineCallback
+================================================
+*/
+class idSoundEngineCallback : public IXAudio2EngineCallback {
+public:
+	idSoundHardware_XAudio2 * hardware;
+
+private:
+	    // Called by XAudio2 just before an audio processing pass begins.
+    STDMETHOD_( void, OnProcessingPassStart ) ( THIS ) {}
+
+    // Called just after an audio processing pass ends.
+    STDMETHOD_( void, OnProcessingPassEnd ) ( THIS ) {}
+
+    // Called in the event of a critical system error which requires XAudio2
+    // to be closed down and restarted.  The error code is given in Error.
+    STDMETHOD_( void, OnCriticalError ) ( THIS_ HRESULT Error );
+};
+
+/*
+================================================
+idSoundHardware_XAudio2
+================================================
+*/
+
+class idSoundHardware_XAudio2 {
+public:
+					idSoundHardware_XAudio2();
+
+	void			Init();
+	void			Shutdown();
+
+	void 			Update();
+
+	idSoundVoice *	AllocateVoice( const idSoundSample * leadinSample, const idSoundSample * loopingSample );
+	void			FreeVoice( idSoundVoice * voice );
+
+	// video playback needs this
+	IXAudio2 *		GetIXAudio2() const { return pXAudio2; };
+
+	int				GetNumZombieVoices() const { return zombieVoices.Num(); }
+	int				GetNumFreeVoices() const { return freeVoices.Num(); }
+
+protected:
+	friend class idSoundSample_XAudio2;
+	friend class idSoundVoice_XAudio2;
+
+private:
+	IXAudio2 * pXAudio2;
+	IXAudio2MasteringVoice * pMasterVoice;
+	IXAudio2SubmixVoice * pSubmixVoice;
+
+	idSoundEngineCallback	soundEngineCallback;
+	int					lastResetTime;
+
+	int					outputChannels;
+	int					channelMask;
+
+	idDebugGraph *		vuMeterRMS;
+	idDebugGraph *		vuMeterPeak;
+	int					vuMeterPeakTimes[ 8 ];
+
+	// Can't stop and start a voice on the same frame, so we have to double this to handle the worst case scenario of stopping all voices and starting a full new set
+	idStaticList<idSoundVoice_XAudio2, MAX_HARDWARE_VOICES * 2 > voices;
+	idStaticList<idSoundVoice_XAudio2 *, MAX_HARDWARE_VOICES * 2 > zombieVoices;
+	idStaticList<idSoundVoice_XAudio2 *, MAX_HARDWARE_VOICES * 2 > freeVoices;
+};
+
+/*
+================================================
+idSoundHardware
+================================================
+*/
+class idSoundHardware : public idSoundHardware_XAudio2 {
+};
+
+#endif