128 lines
4 KiB
C
128 lines
4 KiB
C
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/*++
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Copyright (c) 2001 Microsoft Corporation. All rights reserved.
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Module Name:
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ksmediap.h
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Abstract:
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Private WDM multimedia definitions used only by Microsoft components.
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Moved here from ksmedia.h. Some of these are obsolescent (e.g. ITD).
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--*/
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#ifndef _KSMEDIAP_H
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#define _KSMEDIAP_H
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#define CORE_AUDIO_BUFFER_DURATION_PATH L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\AudioSrv"
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#define CORE_AUDIO_BUFFER_DURATION_VALUE L"CoreAudioBufferDuration"
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#define DEFAULT_CORE_AUDIO_BUFFER_DURATION 10000 // duration in usec.
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#define MAX_CORE_AUDIO_BUFFER_DURATION 20000
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#define MIN_CORE_AUDIO_BUFFER_DURATION 1000
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//===========================================================================
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// Definitions intended for hardware acceleration of the HRTF 3D algorithm
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//===========================================================================
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#define KSDSOUND_BUFFER_CTRL_HRTF_3D 0x40000000
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typedef struct {
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ULONG Size; // This is the size of the struct in bytes
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ULONG Enabled;
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BOOL SwapChannels;
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BOOL ZeroAzimuth;
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BOOL CrossFadeOutput;
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ULONG FilterSize; // This is the additional size of the filter coeff in bytes
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} KSDS3D_HRTF_PARAMS_MSG, *PKSDS3D_HRTF_PARAMS_MSG;
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// HRTF filter quality levels
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typedef enum {
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FULL_FILTER,
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LIGHT_FILTER,
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KSDS3D_FILTER_QUALITY_COUNT
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} KSDS3D_HRTF_FILTER_QUALITY;
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typedef struct {
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ULONG Size; // This is the size of the struct in bytes
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KSDS3D_HRTF_FILTER_QUALITY Quality;
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FLOAT SampleRate;
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ULONG MaxFilterSize;
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ULONG FilterTransientMuteLength;
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ULONG FilterOverlapBufferLength;
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ULONG OutputOverlapBufferLength;
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ULONG Reserved;
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} KSDS3D_HRTF_INIT_MSG, *PKSDS3D_HRTF_INIT_MSG;
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// Coefficient formats
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typedef enum {
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FLOAT_COEFF,
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SHORT_COEFF,
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KSDS3D_COEFF_COUNT
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} KSDS3D_HRTF_COEFF_FORMAT;
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// Filter methods
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typedef enum {
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DIRECT_FORM,
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CASCADE_FORM,
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KSDS3D_FILTER_METHOD_COUNT
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} KSDS3D_HRTF_FILTER_METHOD;
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// Filter methods
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typedef enum {
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DS3D_HRTF_VERSION_1
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} KSDS3D_HRTF_FILTER_VERSION;
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typedef struct {
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KSDS3D_HRTF_FILTER_METHOD FilterMethod;
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KSDS3D_HRTF_COEFF_FORMAT CoeffFormat;
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KSDS3D_HRTF_FILTER_VERSION Version;
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ULONG Reserved;
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} KSDS3D_HRTF_FILTER_FORMAT_MSG, *PKSDS3D_HRTF_FILTER_FORMAT_MSG;
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#define STATIC_KSPROPSETID_Hrtf3d\
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0xb66decb0L, 0xa083, 0x11d0, 0x85, 0x1e, 0x00, 0xc0, 0x4f, 0xd9, 0xba, 0xf3
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DEFINE_GUIDSTRUCT("b66decb0-a083-11d0-851e-00c04fd9baf3", KSPROPSETID_Hrtf3d);
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#define KSPROPSETID_Hrtf3d DEFINE_GUIDNAMED(KSPROPSETID_Hrtf3d)
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typedef enum {
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KSPROPERTY_HRTF3D_PARAMS = 0,
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KSPROPERTY_HRTF3D_INITIALIZE,
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KSPROPERTY_HRTF3D_FILTER_FORMAT
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} KSPROPERTY_HRTF3D;
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//===========================================================================
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// Definitions related to the obsolete Interaural Time Delay 3D algorithm
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//===========================================================================
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// DirectSound3D FIR context
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typedef struct {
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LONG Channel;
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FLOAT VolSmoothScale;
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FLOAT TotalDryAttenuation;
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FLOAT TotalWetAttenuation;
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LONG SmoothFrequency;
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LONG Delay;
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} KSDS3D_ITD_PARAMS, *PKSDS3D_ITD_PARAMS;
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typedef struct {
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ULONG Enabled;
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KSDS3D_ITD_PARAMS LeftParams;
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KSDS3D_ITD_PARAMS RightParams;
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ULONG Reserved;
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} KSDS3D_ITD_PARAMS_MSG, *PKSDS3D_ITD_PARAMS_MSG;
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#define STATIC_KSPROPSETID_Itd3d\
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0x6429f090L, 0x9fd9, 0x11d0, 0xa7, 0x5b, 0x00, 0xa0, 0xc9, 0x03, 0x65, 0xe3
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DEFINE_GUIDSTRUCT("6429f090-9fd9-11d0-a75b-00a0c90365e3", KSPROPSETID_Itd3d);
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#define KSPROPSETID_Itd3d DEFINE_GUIDNAMED(KSPROPSETID_Itd3d)
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typedef enum {
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KSPROPERTY_ITD3D_PARAMS = 0
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} KSPROPERTY_ITD3D;
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#endif /* _KSMEDIAP_H */
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