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/* FAudio - XAudio Reimplementation for FNA
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*
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* Copyright (c) 2011-2020 Ethan Lee, Luigi Auriemma, and the MonoGame Team
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*
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* This software is provided 'as-is', without any express or implied warranty.
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* In no event will the authors be held liable for any damages arising from
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* the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software in a
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* product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source distribution.
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*
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* Ethan "flibitijibibo" Lee <flibitijibibo@flibitijibibo.com>
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*
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*/
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#include "FACT3D.h"
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uint32_t FACT3DInitialize(
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FACTAudioEngine *pEngine,
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F3DAUDIO_HANDLE F3DInstance
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) {
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float nSpeedOfSound;
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FAudioWaveFormatExtensible wfxFinalMixFormat;
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if (pEngine == NULL)
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{
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return 0;
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}
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FACTAudioEngine_GetGlobalVariable(
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pEngine,
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FACTAudioEngine_GetGlobalVariableIndex(
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pEngine,
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"SpeedOfSound"
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),
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&nSpeedOfSound
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);
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FACTAudioEngine_GetFinalMixFormat(
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pEngine,
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&wfxFinalMixFormat
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);
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F3DAudioInitialize(
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wfxFinalMixFormat.dwChannelMask,
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nSpeedOfSound,
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F3DInstance
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);
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return 0;
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}
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uint32_t FACT3DCalculate(
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F3DAUDIO_HANDLE F3DInstance,
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const F3DAUDIO_LISTENER *pListener,
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F3DAUDIO_EMITTER *pEmitter,
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F3DAUDIO_DSP_SETTINGS *pDSPSettings
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) {
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static F3DAUDIO_DISTANCE_CURVE_POINT DefaultCurvePoints[2] =
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{
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{ 0.0f, 1.0f },
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{ 1.0f, 1.0f }
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};
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static F3DAUDIO_DISTANCE_CURVE DefaultCurve =
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{
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(F3DAUDIO_DISTANCE_CURVE_POINT*) &DefaultCurvePoints[0], 2
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};
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if (pListener == NULL || pEmitter == NULL || pDSPSettings == NULL)
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{
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return 0;
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}
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if (pEmitter->ChannelCount > 1 && pEmitter->pChannelAzimuths == NULL)
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{
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pEmitter->ChannelRadius = 1.0f;
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if (pEmitter->ChannelCount == 2)
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{
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pEmitter->pChannelAzimuths = (float*) &aStereoLayout[0];
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}
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else if (pEmitter->ChannelCount == 3)
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{
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pEmitter->pChannelAzimuths = (float*) &a2Point1Layout[0];
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}
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else if (pEmitter->ChannelCount == 4)
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{
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pEmitter->pChannelAzimuths = (float*) &aQuadLayout[0];
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}
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else if (pEmitter->ChannelCount == 5)
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{
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pEmitter->pChannelAzimuths = (float*) &a4Point1Layout[0];
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}
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else if (pEmitter->ChannelCount == 6)
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{
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pEmitter->pChannelAzimuths = (float*) &a5Point1Layout[0];
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}
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else if (pEmitter->ChannelCount == 8)
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{
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pEmitter->pChannelAzimuths = (float*) &a7Point1Layout[0];
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}
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else
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{
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return 0;
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}
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}
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if (pEmitter->pVolumeCurve == NULL)
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{
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pEmitter->pVolumeCurve = &DefaultCurve;
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}
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if (pEmitter->pLFECurve == NULL)
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{
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pEmitter->pLFECurve = &DefaultCurve;
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}
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F3DAudioCalculate(
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F3DInstance,
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pListener,
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pEmitter,
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(
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F3DAUDIO_CALCULATE_MATRIX |
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F3DAUDIO_CALCULATE_DOPPLER |
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F3DAUDIO_CALCULATE_EMITTER_ANGLE
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),
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pDSPSettings
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);
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return 0;
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}
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uint32_t FACT3DApply(
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F3DAUDIO_DSP_SETTINGS *pDSPSettings,
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FACTCue *pCue
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) {
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if (pDSPSettings == NULL || pCue == NULL)
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{
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return 0;
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}
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FACTCue_SetMatrixCoefficients(
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pCue,
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pDSPSettings->SrcChannelCount,
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pDSPSettings->DstChannelCount,
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pDSPSettings->pMatrixCoefficients
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);
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FACTCue_SetVariable(
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pCue,
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FACTCue_GetVariableIndex(pCue, "Distance"),
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pDSPSettings->EmitterToListenerDistance
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);
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FACTCue_SetVariable(
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pCue,
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FACTCue_GetVariableIndex(pCue, "DopplerPitchScalar"),
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pDSPSettings->DopplerFactor
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);
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FACTCue_SetVariable(
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pCue,
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FACTCue_GetVariableIndex(pCue, "OrientationAngle"),
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pDSPSettings->EmitterToListenerAngle * (180.0f / F3DAUDIO_PI)
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);
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return 0;
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}
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/* vim: set noexpandtab shiftwidth=8 tabstop=8: */
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