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pa_win_wasapi.c
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pa_win_wasapi.c
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/*
* Portable Audio I/O Library WASAPI implementation
* Copyright (c) 2006-2010 David Viens
* Copyright (c) 2010-2019 Dmitry Kostjuchenko
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 1999-2019 Ross Bencina, Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup hostapi_src
@brief WASAPI implementation of support for a host API.
@note pa_wasapi currently requires minimum VC 2005, and the latest Vista SDK
*/
#include <windows.h>
#include <stdio.h>
#include <process.h>
#include <assert.h>
// Max device count (if defined) causes max constant device count in the device list that
// enables PaWasapi_UpdateDeviceList() API and makes it possible to update WASAPI list dynamically
#ifndef PA_WASAPI_MAX_CONST_DEVICE_COUNT
#define PA_WASAPI_MAX_CONST_DEVICE_COUNT 0 // Force basic behavior by defining 0 if not defined by user
#endif
// Fallback from Event to the Polling method in case if latency is higher than 21.33ms, as it allows to use
// 100% of CPU inside the PA's callback.
// Note: Some USB DAC drivers are buggy when Polling method is forced in Exclusive mode, audio output becomes
// unstable with a lot of interruptions, therefore this define is optional. The default behavior is to
// not change the Event mode to Polling and use the mode which user provided.
//#define PA_WASAPI_FORCE_POLL_IF_LARGE_BUFFER
//! Poll mode time slots logging.
//#define PA_WASAPI_LOG_TIME_SLOTS
// WinRT
#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
#define PA_WINRT
#define INITGUID
#endif
// WASAPI
// using adjustments for MinGW build from @mgeier/MXE
// https://github.com/mxe/mxe/commit/f4bbc45682f021948bdaefd9fd476e2a04c4740f
#include <mmreg.h> // must be before other Wasapi headers
#if defined(_MSC_VER) && (_MSC_VER >= 1400) || defined(__MINGW64_VERSION_MAJOR)
#include <avrt.h>
#define COBJMACROS
#include <audioclient.h>
#include <endpointvolume.h>
#define INITGUID // Avoid additional linkage of static libs, excessive code will be optimized out by the compiler
#ifndef _MSC_VER
#include <functiondiscoverykeys_devpkey.h>
#endif
#include <functiondiscoverykeys.h>
#include <mmdeviceapi.h>
#include <devicetopology.h> // Used to get IKsJackDescription interface
#undef INITGUID
// Visual Studio 2010 does not support the inline keyword
#if (_MSC_VER <= 1600)
#define inline _inline
#endif
#endif
#ifndef __MWERKS__
#include <malloc.h>
#include <memory.h>
#endif
#ifndef PA_WINRT
#include <mmsystem.h>
#endif
#include "pa_util.h"
#include "pa_allocation.h"
#include "pa_hostapi.h"
#include "pa_stream.h"
#include "pa_cpuload.h"
#include "pa_process.h"
#include "pa_win_wasapi.h"
#include "pa_debugprint.h"
#include "pa_ringbuffer.h"
#include "pa_win_coinitialize.h"
#if !defined(NTDDI_VERSION) || (defined(__GNUC__) && (__GNUC__ <= 6) && !defined(__MINGW64__))
#undef WINVER
#undef _WIN32_WINNT
#define WINVER 0x0600 // VISTA
#define _WIN32_WINNT WINVER
#ifndef WINAPI
#define WINAPI __stdcall
#endif
#ifndef __unaligned
#define __unaligned
#endif
#ifndef __C89_NAMELESS
#define __C89_NAMELESS
#endif
#ifndef _AVRT_ //<< fix MinGW dummy compile by defining missing type: AVRT_PRIORITY
typedef enum _AVRT_PRIORITY
{
AVRT_PRIORITY_LOW = -1,
AVRT_PRIORITY_NORMAL,
AVRT_PRIORITY_HIGH,
AVRT_PRIORITY_CRITICAL
} AVRT_PRIORITY, *PAVRT_PRIORITY;
#endif
#include <basetyps.h> // << for IID/CLSID
#include <rpcsal.h>
#include <sal.h>
#ifndef __LPCGUID_DEFINED__
#define __LPCGUID_DEFINED__
typedef const GUID *LPCGUID;
#endif
typedef GUID IID;
typedef GUID CLSID;
#ifndef PROPERTYKEY_DEFINED
#define PROPERTYKEY_DEFINED
typedef struct _tagpropertykey
{
GUID fmtid;
DWORD pid;
} PROPERTYKEY;
#endif
#ifdef __midl_proxy
#define __MIDL_CONST
#else
#define __MIDL_CONST const
#endif
#ifdef WIN64
#include <wtypes.h>
#define FASTCALL
#include <oleidl.h>
#include <objidl.h>
#else
#ifndef _BLOB_DEFINED
typedef struct _BYTE_BLOB
{
unsigned long clSize;
unsigned char abData[ 1 ];
} BYTE_BLOB;
typedef /* [unique] */ __RPC_unique_pointer BYTE_BLOB *UP_BYTE_BLOB;
#endif
typedef LONGLONG REFERENCE_TIME;
#define NONAMELESSUNION
#endif
#ifndef NT_SUCCESS
typedef LONG NTSTATUS;
#endif
#ifndef WAVE_FORMAT_IEEE_FLOAT
#define WAVE_FORMAT_IEEE_FLOAT 0x0003 // 32-bit floating-point
#endif
#ifndef __MINGW_EXTENSION
#if defined(__GNUC__) || defined(__GNUG__)
#define __MINGW_EXTENSION __extension__
#else
#define __MINGW_EXTENSION
#endif
#endif
#include <sdkddkver.h>
#include <propkeydef.h>
#define COBJMACROS
#define INITGUID // Avoid additional linkage of static libs, excessive code will be optimized out by the compiler
#include <audioclient.h>
#include <mmdeviceapi.h>
#include <endpointvolume.h>
#include <functiondiscoverykeys.h>
#include <devicetopology.h> // Used to get IKsJackDescription interface
#undef INITGUID
#endif // NTDDI_VERSION
// Missing declarations for WinRT
#ifdef PA_WINRT
#define DEVICE_STATE_ACTIVE 0x00000001
typedef enum _EDataFlow
{
eRender = 0,
eCapture = ( eRender + 1 ) ,
eAll = ( eCapture + 1 ) ,
EDataFlow_enum_count = ( eAll + 1 )
}
EDataFlow;
typedef enum _EndpointFormFactor
{
RemoteNetworkDevice = 0,
Speakers = ( RemoteNetworkDevice + 1 ) ,
LineLevel = ( Speakers + 1 ) ,
Headphones = ( LineLevel + 1 ) ,
Microphone = ( Headphones + 1 ) ,
Headset = ( Microphone + 1 ) ,
Handset = ( Headset + 1 ) ,
UnknownDigitalPassthrough = ( Handset + 1 ) ,
SPDIF = ( UnknownDigitalPassthrough + 1 ) ,
HDMI = ( SPDIF + 1 ) ,
UnknownFormFactor = ( HDMI + 1 )
}
EndpointFormFactor;
#endif
#ifndef GUID_SECT
#define GUID_SECT
#endif
#define __DEFINE_GUID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const GUID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
#define __DEFINE_IID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const IID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
#define __DEFINE_CLSID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const CLSID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
#define PA_DEFINE_CLSID(className, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
__DEFINE_CLSID(pa_CLSID_##className, 0x##l, 0x##w1, 0x##w2, 0x##b1, 0x##b2, 0x##b3, 0x##b4, 0x##b5, 0x##b6, 0x##b7, 0x##b8)
#define PA_DEFINE_IID(interfaceName, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
__DEFINE_IID(pa_IID_##interfaceName, 0x##l, 0x##w1, 0x##w2, 0x##b1, 0x##b2, 0x##b3, 0x##b4, 0x##b5, 0x##b6, 0x##b7, 0x##b8)
// "1CB9AD4C-DBFA-4c32-B178-C2F568A703B2"
PA_DEFINE_IID(IAudioClient, 1cb9ad4c, dbfa, 4c32, b1, 78, c2, f5, 68, a7, 03, b2);
// "726778CD-F60A-4EDA-82DE-E47610CD78AA"
PA_DEFINE_IID(IAudioClient2, 726778cd, f60a, 4eda, 82, de, e4, 76, 10, cd, 78, aa);
// "7ED4EE07-8E67-4CD4-8C1A-2B7A5987AD42"
PA_DEFINE_IID(IAudioClient3, 7ed4ee07, 8e67, 4cd4, 8c, 1a, 2b, 7a, 59, 87, ad, 42);
// "1BE09788-6894-4089-8586-9A2A6C265AC5"
PA_DEFINE_IID(IMMEndpoint, 1be09788, 6894, 4089, 85, 86, 9a, 2a, 6c, 26, 5a, c5);
// "A95664D2-9614-4F35-A746-DE8DB63617E6"
PA_DEFINE_IID(IMMDeviceEnumerator, a95664d2, 9614, 4f35, a7, 46, de, 8d, b6, 36, 17, e6);
// "BCDE0395-E52F-467C-8E3D-C4579291692E"
PA_DEFINE_CLSID(IMMDeviceEnumerator,bcde0395, e52f, 467c, 8e, 3d, c4, 57, 92, 91, 69, 2e);
// "F294ACFC-3146-4483-A7BF-ADDCA7C260E2"
PA_DEFINE_IID(IAudioRenderClient, f294acfc, 3146, 4483, a7, bf, ad, dc, a7, c2, 60, e2);
// "C8ADBD64-E71E-48a0-A4DE-185C395CD317"
PA_DEFINE_IID(IAudioCaptureClient, c8adbd64, e71e, 48a0, a4, de, 18, 5c, 39, 5c, d3, 17);
// *2A07407E-6497-4A18-9787-32F79BD0D98F* Or this??
PA_DEFINE_IID(IDeviceTopology, 2A07407E, 6497, 4A18, 97, 87, 32, f7, 9b, d0, d9, 8f);
// *AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9*
PA_DEFINE_IID(IPart, AE2DE0E4, 5BCA, 4F2D, aa, 46, 5d, 13, f8, fd, b3, a9);
// *4509F757-2D46-4637-8E62-CE7DB944F57B*
PA_DEFINE_IID(IKsJackDescription, 4509F757, 2D46, 4637, 8e, 62, ce, 7d, b9, 44, f5, 7b);
// Media formats:
__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_ADPCM, 0x00000002, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
#ifdef __IAudioClient2_INTERFACE_DEFINED__
typedef enum _pa_AUDCLNT_STREAMOPTIONS {
pa_AUDCLNT_STREAMOPTIONS_NONE = 0x00,
pa_AUDCLNT_STREAMOPTIONS_RAW = 0x01,
pa_AUDCLNT_STREAMOPTIONS_MATCH_FORMAT = 0x02
} pa_AUDCLNT_STREAMOPTIONS;
typedef struct _pa_AudioClientProperties {
UINT32 cbSize;
BOOL bIsOffload;
AUDIO_STREAM_CATEGORY eCategory;
pa_AUDCLNT_STREAMOPTIONS Options;
} pa_AudioClientProperties;
#define PA_AUDIOCLIENTPROPERTIES_SIZE_CATEGORY (sizeof(pa_AudioClientProperties) - sizeof(pa_AUDCLNT_STREAMOPTIONS))
#define PA_AUDIOCLIENTPROPERTIES_SIZE_OPTIONS sizeof(pa_AudioClientProperties)
#endif // __IAudioClient2_INTERFACE_DEFINED__
/* use CreateThread for CYGWIN/Windows Mobile, _beginthreadex for all others */
#if !defined(__CYGWIN__) && !defined(_WIN32_WCE)
#define CREATE_THREAD(PROC) (HANDLE)_beginthreadex( NULL, 0, (PROC), stream, 0, &stream->dwThreadId )
#define PA_THREAD_FUNC static unsigned WINAPI
#define PA_THREAD_ID unsigned
#else
#define CREATE_THREAD(PROC) CreateThread( NULL, 0, (PROC), stream, 0, &stream->dwThreadId )
#define PA_THREAD_FUNC static DWORD WINAPI
#define PA_THREAD_ID DWORD
#endif
// Thread function forward decl.
PA_THREAD_FUNC ProcThreadEvent(void *param);
PA_THREAD_FUNC ProcThreadPoll(void *param);
// Error codes (available since Windows 7)
#ifndef AUDCLNT_E_BUFFER_ERROR
#define AUDCLNT_E_BUFFER_ERROR AUDCLNT_ERR(0x018)
#endif
#ifndef AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
#define AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED AUDCLNT_ERR(0x019)
#endif
#ifndef AUDCLNT_E_INVALID_DEVICE_PERIOD
#define AUDCLNT_E_INVALID_DEVICE_PERIOD AUDCLNT_ERR(0x020)
#endif
// Stream flags (available since Windows 7)
#ifndef AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY
#define AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY 0x08000000
#endif
#ifndef AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM
#define AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM 0x80000000
#endif
#define PA_WASAPI_DEVICE_ID_LEN 256
#define PA_WASAPI_DEVICE_NAME_LEN 128
#ifdef PA_WINRT
#define PA_WASAPI_DEVICE_MAX_COUNT 16
#endif
enum { S_INPUT = 0, S_OUTPUT = 1, S_COUNT = 2, S_FULLDUPLEX = 0 };
// Number of packets which compose single contignous buffer. With trial and error it was calculated
// that WASAPI Input sub-system uses 6 packets per whole buffer. Please provide more information
// or corrections if available.
enum { WASAPI_PACKETS_PER_INPUT_BUFFER = 6 };
#define STATIC_ARRAY_SIZE(array) (sizeof(array)/sizeof(array[0]))
#define PRINT(x) PA_DEBUG(x);
#define PA_SKELETON_SET_LAST_HOST_ERROR( errorCode, errorText ) \
PaUtil_SetLastHostErrorInfo( paWASAPI, errorCode, errorText )
#define PA_WASAPI__IS_FULLDUPLEX(STREAM) ((STREAM)->in.clientProc && (STREAM)->out.clientProc)
#ifndef IF_FAILED_JUMP
#define IF_FAILED_JUMP(hr, label) if(FAILED(hr)) goto label;
#endif
#ifndef IF_FAILED_INTERNAL_ERROR_JUMP
#define IF_FAILED_INTERNAL_ERROR_JUMP(hr, error, label) if(FAILED(hr)) { error = paInternalError; goto label; }
#endif
#define SAFE_CLOSE(h) if ((h) != NULL) { CloseHandle((h)); (h) = NULL; }
#define SAFE_RELEASE(punk) if ((punk) != NULL) { (punk)->lpVtbl->Release((punk)); (punk) = NULL; }
// Mixer function
typedef void (*MixMonoToStereoF) (void *__to, const void *__from, UINT32 count);
// AVRT is the new "multimedia scheduling stuff"
#ifndef PA_WINRT
typedef BOOL (WINAPI *FAvRtCreateThreadOrderingGroup) (PHANDLE,PLARGE_INTEGER,GUID*,PLARGE_INTEGER);
typedef BOOL (WINAPI *FAvRtDeleteThreadOrderingGroup) (HANDLE);
typedef BOOL (WINAPI *FAvRtWaitOnThreadOrderingGroup) (HANDLE);
typedef HANDLE (WINAPI *FAvSetMmThreadCharacteristics) (LPCSTR,LPDWORD);
typedef BOOL (WINAPI *FAvRevertMmThreadCharacteristics)(HANDLE);
typedef BOOL (WINAPI *FAvSetMmThreadPriority) (HANDLE,AVRT_PRIORITY);
static HMODULE hDInputDLL = 0;
FAvRtCreateThreadOrderingGroup pAvRtCreateThreadOrderingGroup = NULL;
FAvRtDeleteThreadOrderingGroup pAvRtDeleteThreadOrderingGroup = NULL;
FAvRtWaitOnThreadOrderingGroup pAvRtWaitOnThreadOrderingGroup = NULL;
FAvSetMmThreadCharacteristics pAvSetMmThreadCharacteristics = NULL;
FAvRevertMmThreadCharacteristics pAvRevertMmThreadCharacteristics = NULL;
FAvSetMmThreadPriority pAvSetMmThreadPriority = NULL;
#endif
#define _GetProc(fun, type, name) { \
fun = (type) GetProcAddress(hDInputDLL,name); \
if (fun == NULL) { \
PRINT(("GetProcAddr failed for %s" ,name)); \
return FALSE; \
} \
} \
// ------------------------------------------------------------------------------------------
/* prototypes for functions declared in this file */
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
PaError PaWasapi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
#ifdef __cplusplus
}
#endif /* __cplusplus */
// dummy entry point for other compilers and sdks
// currently built using RC1 SDK (5600)
//#if _MSC_VER < 1400
//PaError PaWasapi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
//{
//return paNoError;
//}
//#else
// ------------------------------------------------------------------------------------------
static void Terminate( struct PaUtilHostApiRepresentation *hostApi );
static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
const PaStreamParameters *inputParameters,
const PaStreamParameters *outputParameters,
double sampleRate );
static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
PaStream** s,
const PaStreamParameters *inputParameters,
const PaStreamParameters *outputParameters,
double sampleRate,
unsigned long framesPerBuffer,
PaStreamFlags streamFlags,
PaStreamCallback *streamCallback,
void *userData );
static PaError CloseStream( PaStream* stream );
static PaError StartStream( PaStream *stream );
static PaError StopStream( PaStream *stream );
static PaError AbortStream( PaStream *stream );
static PaError IsStreamStopped( PaStream *s );
static PaError IsStreamActive( PaStream *stream );
static PaTime GetStreamTime( PaStream *stream );
static double GetStreamCpuLoad( PaStream* stream );
static PaError ReadStream( PaStream* stream, void *buffer, unsigned long frames );
static PaError WriteStream( PaStream* stream, const void *buffer, unsigned long frames );
static signed long GetStreamReadAvailable( PaStream* stream );
static signed long GetStreamWriteAvailable( PaStream* stream );
// ------------------------------------------------------------------------------------------
/*
These are fields that can be gathered from IDevice and IAudioDevice PRIOR to Initialize, and
done in first pass i assume that neither of these will cause the Driver to "load", but again,
who knows how they implement their stuff
*/
typedef struct PaWasapiDeviceInfo
{
// Device
#ifndef PA_WINRT
IMMDevice *device;
#endif
// device Id
WCHAR deviceId[PA_WASAPI_DEVICE_ID_LEN];
// from GetState
DWORD state;
// Fields filled from IAudioDevice (_prior_ to Initialize)
// from GetDevicePeriod(
REFERENCE_TIME DefaultDevicePeriod;
REFERENCE_TIME MinimumDevicePeriod;
// Default format (setup through Control Panel by user)
WAVEFORMATEXTENSIBLE DefaultFormat;
// Mix format (internal format used by WASAPI audio engine)
WAVEFORMATEXTENSIBLE MixFormat;
// Fields filled from IMMEndpoint'sGetDataFlow
EDataFlow flow;
// Form-factor
EndpointFormFactor formFactor;
}
PaWasapiDeviceInfo;
// ------------------------------------------------------------------------------------------
/* PaWasapiHostApiRepresentation - host api datastructure specific to this implementation */
typedef struct
{
PaUtilHostApiRepresentation inheritedHostApiRep;
PaUtilStreamInterface callbackStreamInterface;
PaUtilStreamInterface blockingStreamInterface;
PaUtilAllocationGroup *allocations;
/* implementation specific data goes here */
PaWinUtilComInitializationResult comInitializationResult;
// this is the REAL number of devices, whether they are useful to PA or not!
UINT32 deviceCount;
PaWasapiDeviceInfo *devInfo;
// is TRUE when WOW64 Vista/7 Workaround is needed
BOOL useWOW64Workaround;
}
PaWasapiHostApiRepresentation;
// ------------------------------------------------------------------------------------------
/* PaWasapiAudioClientParams - audio client parameters */
typedef struct PaWasapiAudioClientParams
{
PaWasapiDeviceInfo *device_info;
PaStreamParameters stream_params;
PaWasapiStreamInfo wasapi_params;
UINT32 frames_per_buffer;
double sample_rate;
BOOL blocking;
BOOL full_duplex;
BOOL wow64_workaround;
}
PaWasapiAudioClientParams;
// ------------------------------------------------------------------------------------------
/* PaWasapiStream - a stream data structure specifically for this implementation */
typedef struct PaWasapiSubStream
{
IAudioClient *clientParent;
#ifndef PA_WINRT
IStream *clientStream;
#endif
IAudioClient *clientProc;
WAVEFORMATEXTENSIBLE wavex;
UINT32 bufferSize;
REFERENCE_TIME deviceLatency;
REFERENCE_TIME period;
double latencySeconds;
UINT32 framesPerHostCallback;
AUDCLNT_SHAREMODE shareMode;
UINT32 streamFlags; // AUDCLNT_STREAMFLAGS_EVENTCALLBACK, ...
UINT32 flags;
PaWasapiAudioClientParams params; //!< parameters
// Buffers
UINT32 buffers; //!< number of buffers used (from host side)
UINT32 framesPerBuffer; //!< number of frames per 1 buffer
BOOL userBufferAndHostMatch;
// Used for Mono >> Stereo workaround, if driver does not support it
// (in Exclusive mode WASAPI usually refuses to operate with Mono (1-ch)
void *monoBuffer; //!< pointer to buffer
UINT32 monoBufferSize; //!< buffer size in bytes
MixMonoToStereoF monoMixer; //!< pointer to mixer function
PaUtilRingBuffer *tailBuffer; //!< buffer with trailing sample for blocking mode operations (only for Input)
void *tailBufferMemory; //!< tail buffer memory region
}
PaWasapiSubStream;
// ------------------------------------------------------------------------------------------
/* PaWasapiHostProcessor - redirects processing data */
typedef struct PaWasapiHostProcessor
{
PaWasapiHostProcessorCallback processor;
void *userData;
}
PaWasapiHostProcessor;
// ------------------------------------------------------------------------------------------
typedef struct PaWasapiStream
{
/* IMPLEMENT ME: rename this */
PaUtilStreamRepresentation streamRepresentation;
PaUtilCpuLoadMeasurer cpuLoadMeasurer;
PaUtilBufferProcessor bufferProcessor;
// input
PaWasapiSubStream in;
IAudioCaptureClient *captureClientParent;
#ifndef PA_WINRT
IStream *captureClientStream;
#endif
IAudioCaptureClient *captureClient;
IAudioEndpointVolume *inVol;
// output
PaWasapiSubStream out;
IAudioRenderClient *renderClientParent;
#ifndef PA_WINRT
IStream *renderClientStream;
#endif
IAudioRenderClient *renderClient;
IAudioEndpointVolume *outVol;
// event handles for event-driven processing mode
HANDLE event[S_COUNT];
// buffer mode
PaUtilHostBufferSizeMode bufferMode;
// must be volatile to avoid race condition on user query while
// thread is being started
volatile BOOL running;
PA_THREAD_ID dwThreadId;
HANDLE hThread;
HANDLE hCloseRequest;
HANDLE hThreadStart; //!< signalled by thread on start
HANDLE hThreadExit; //!< signalled by thread on exit
HANDLE hBlockingOpStreamRD;
HANDLE hBlockingOpStreamWR;
// Host callback Output overrider
PaWasapiHostProcessor hostProcessOverrideOutput;
// Host callback Input overrider
PaWasapiHostProcessor hostProcessOverrideInput;
// Defines blocking/callback interface used
BOOL bBlocking;
// Av Task (MM thread management)
HANDLE hAvTask;
// Thread priority level
PaWasapiThreadPriority nThreadPriority;
// State handler
PaWasapiStreamStateCallback fnStateHandler;
void *pStateHandlerUserData;
}
PaWasapiStream;
// COM marshaling
static HRESULT MarshalSubStreamComPointers(PaWasapiSubStream *substream);
static HRESULT MarshalStreamComPointers(PaWasapiStream *stream);
static HRESULT UnmarshalSubStreamComPointers(PaWasapiSubStream *substream);
static HRESULT UnmarshalStreamComPointers(PaWasapiStream *stream);
static void ReleaseUnmarshaledSubComPointers(PaWasapiSubStream *substream);
static void ReleaseUnmarshaledComPointers(PaWasapiStream *stream);
// Local methods
static void _StreamOnStop(PaWasapiStream *stream);
static void _StreamFinish(PaWasapiStream *stream);
static void _StreamCleanup(PaWasapiStream *stream);
static HRESULT _PollGetOutputFramesAvailable(PaWasapiStream *stream, UINT32 *available);
static HRESULT _PollGetInputFramesAvailable(PaWasapiStream *stream, UINT32 *available);
static void *PaWasapi_ReallocateMemory(void *prev, size_t size);
static void PaWasapi_FreeMemory(void *ptr);
static PaSampleFormat WaveToPaFormat(const WAVEFORMATEXTENSIBLE *fmtext);
// WinRT (UWP) device list
#ifdef PA_WINRT
typedef struct PaWasapiWinrtDeviceInfo
{
WCHAR id[PA_WASAPI_DEVICE_ID_LEN];
WCHAR name[PA_WASAPI_DEVICE_NAME_LEN];
EndpointFormFactor formFactor;
}
PaWasapiWinrtDeviceInfo;
typedef struct PaWasapiWinrtDeviceListRole
{
WCHAR defaultId[PA_WASAPI_DEVICE_ID_LEN];
PaWasapiWinrtDeviceInfo devices[PA_WASAPI_DEVICE_MAX_COUNT];
UINT32 deviceCount;
}
PaWasapiWinrtDeviceListRole;
typedef struct PaWasapiWinrtDeviceList
{
PaWasapiWinrtDeviceListRole render;
PaWasapiWinrtDeviceListRole capture;
}
PaWasapiWinrtDeviceList;
static PaWasapiWinrtDeviceList g_DeviceListInfo = { 0 };
#endif
// WinRT (UWP) device list context
#ifdef PA_WINRT
typedef struct PaWasapiWinrtDeviceListContextEntry
{
PaWasapiWinrtDeviceInfo *info;
EDataFlow flow;
}
PaWasapiWinrtDeviceListContextEntry;
typedef struct PaWasapiWinrtDeviceListContext
{
PaWasapiWinrtDeviceListContextEntry devices[PA_WASAPI_DEVICE_MAX_COUNT * 2];
}
PaWasapiWinrtDeviceListContext;
#endif
// ------------------------------------------------------------------------------------------
#define LogHostError(HRES) __LogHostError(HRES, __FUNCTION__, __FILE__, __LINE__)
static HRESULT __LogHostError(HRESULT res, const char *func, const char *file, int line)
{
const char *text = NULL;
switch (res)
{
case S_OK: return res;
case E_POINTER :text ="E_POINTER"; break;
case E_INVALIDARG :text ="E_INVALIDARG"; break;
case AUDCLNT_E_NOT_INITIALIZED :text ="AUDCLNT_E_NOT_INITIALIZED"; break;
case AUDCLNT_E_ALREADY_INITIALIZED :text ="AUDCLNT_E_ALREADY_INITIALIZED"; break;
case AUDCLNT_E_WRONG_ENDPOINT_TYPE :text ="AUDCLNT_E_WRONG_ENDPOINT_TYPE"; break;
case AUDCLNT_E_DEVICE_INVALIDATED :text ="AUDCLNT_E_DEVICE_INVALIDATED"; break;
case AUDCLNT_E_NOT_STOPPED :text ="AUDCLNT_E_NOT_STOPPED"; break;
case AUDCLNT_E_BUFFER_TOO_LARGE :text ="AUDCLNT_E_BUFFER_TOO_LARGE"; break;
case AUDCLNT_E_OUT_OF_ORDER :text ="AUDCLNT_E_OUT_OF_ORDER"; break;
case AUDCLNT_E_UNSUPPORTED_FORMAT :text ="AUDCLNT_E_UNSUPPORTED_FORMAT"; break;
case AUDCLNT_E_INVALID_SIZE :text ="AUDCLNT_E_INVALID_SIZE"; break;
case AUDCLNT_E_DEVICE_IN_USE :text ="AUDCLNT_E_DEVICE_IN_USE"; break;
case AUDCLNT_E_BUFFER_OPERATION_PENDING :text ="AUDCLNT_E_BUFFER_OPERATION_PENDING"; break;
case AUDCLNT_E_THREAD_NOT_REGISTERED :text ="AUDCLNT_E_THREAD_NOT_REGISTERED"; break;
case AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED :text ="AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED"; break;
case AUDCLNT_E_ENDPOINT_CREATE_FAILED :text ="AUDCLNT_E_ENDPOINT_CREATE_FAILED"; break;
case AUDCLNT_E_SERVICE_NOT_RUNNING :text ="AUDCLNT_E_SERVICE_NOT_RUNNING"; break;
case AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED :text ="AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED"; break;
case AUDCLNT_E_EXCLUSIVE_MODE_ONLY :text ="AUDCLNT_E_EXCLUSIVE_MODE_ONLY"; break;
case AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL :text ="AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL"; break;
case AUDCLNT_E_EVENTHANDLE_NOT_SET :text ="AUDCLNT_E_EVENTHANDLE_NOT_SET"; break;
case AUDCLNT_E_INCORRECT_BUFFER_SIZE :text ="AUDCLNT_E_INCORRECT_BUFFER_SIZE"; break;
case AUDCLNT_E_BUFFER_SIZE_ERROR :text ="AUDCLNT_E_BUFFER_SIZE_ERROR"; break;
case AUDCLNT_E_CPUUSAGE_EXCEEDED :text ="AUDCLNT_E_CPUUSAGE_EXCEEDED"; break;
case AUDCLNT_E_BUFFER_ERROR :text ="AUDCLNT_E_BUFFER_ERROR"; break;
case AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED :text ="AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED"; break;
case AUDCLNT_E_INVALID_DEVICE_PERIOD :text ="AUDCLNT_E_INVALID_DEVICE_PERIOD"; break;
#ifdef AUDCLNT_E_INVALID_STREAM_FLAG
case AUDCLNT_E_INVALID_STREAM_FLAG :text ="AUDCLNT_E_INVALID_STREAM_FLAG"; break;
#endif
#ifdef AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE
case AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE :text ="AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE"; break;
#endif
#ifdef AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES
case AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES :text ="AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES"; break;
#endif
#ifdef AUDCLNT_E_OFFLOAD_MODE_ONLY
case AUDCLNT_E_OFFLOAD_MODE_ONLY :text ="AUDCLNT_E_OFFLOAD_MODE_ONLY"; break;
#endif
#ifdef AUDCLNT_E_NONOFFLOAD_MODE_ONLY
case AUDCLNT_E_NONOFFLOAD_MODE_ONLY :text ="AUDCLNT_E_NONOFFLOAD_MODE_ONLY"; break;
#endif
#ifdef AUDCLNT_E_RESOURCES_INVALIDATED
case AUDCLNT_E_RESOURCES_INVALIDATED :text ="AUDCLNT_E_RESOURCES_INVALIDATED"; break;
#endif
#ifdef AUDCLNT_E_RAW_MODE_UNSUPPORTED
case AUDCLNT_E_RAW_MODE_UNSUPPORTED :text ="AUDCLNT_E_RAW_MODE_UNSUPPORTED"; break;
#endif
#ifdef AUDCLNT_E_ENGINE_PERIODICITY_LOCKED
case AUDCLNT_E_ENGINE_PERIODICITY_LOCKED :text ="AUDCLNT_E_ENGINE_PERIODICITY_LOCKED"; break;
#endif
#ifdef AUDCLNT_E_ENGINE_FORMAT_LOCKED
case AUDCLNT_E_ENGINE_FORMAT_LOCKED :text ="AUDCLNT_E_ENGINE_FORMAT_LOCKED"; break;
#endif
case AUDCLNT_S_BUFFER_EMPTY :text ="AUDCLNT_S_BUFFER_EMPTY"; break;
case AUDCLNT_S_THREAD_ALREADY_REGISTERED :text ="AUDCLNT_S_THREAD_ALREADY_REGISTERED"; break;
case AUDCLNT_S_POSITION_STALLED :text ="AUDCLNT_S_POSITION_STALLED"; break;
// other windows common errors:
case CO_E_NOTINITIALIZED :text ="CO_E_NOTINITIALIZED: you must call CoInitialize() before Pa_OpenStream()"; break;
default:
text = "UNKNOWN ERROR";
}
PRINT(("WASAPI ERROR HRESULT: 0x%X : %s\n [FUNCTION: %s FILE: %s {LINE: %d}]\n", res, text, func, file, line));
#ifndef PA_ENABLE_DEBUG_OUTPUT
(void)func; (void)file; (void)line;
#endif
PA_SKELETON_SET_LAST_HOST_ERROR(res, text);
return res;
}
// ------------------------------------------------------------------------------------------
#define LogPaError(PAERR) __LogPaError(PAERR, __FUNCTION__, __FILE__, __LINE__)
static PaError __LogPaError(PaError err, const char *func, const char *file, int line)
{
if (err == paNoError)
return err;
PRINT(("WASAPI ERROR PAERROR: %i : %s\n [FUNCTION: %s FILE: %s {LINE: %d}]\n", err, Pa_GetErrorText(err), func, file, line));
#ifndef PA_ENABLE_DEBUG_OUTPUT
(void)func; (void)file; (void)line;
#endif
return err;
}
// ------------------------------------------------------------------------------------------
/*! \class ThreadSleepScheduler
Allows to emulate thread sleep of less than 1 millisecond under Windows. Scheduler
calculates number of times the thread must run until next sleep of 1 millisecond.
It does not make thread sleeping for real number of microseconds but rather controls
how many of imaginary microseconds the thread task can allow thread to sleep.
*/
typedef struct ThreadIdleScheduler
{
UINT32 m_idle_microseconds; //!< number of microseconds to sleep
UINT32 m_next_sleep; //!< next sleep round
UINT32 m_i; //!< current round iterator position
UINT32 m_resolution; //!< resolution in number of milliseconds
}
ThreadIdleScheduler;
//! Setup scheduler.
static void ThreadIdleScheduler_Setup(ThreadIdleScheduler *sched, UINT32 resolution, UINT32 microseconds)
{
assert(microseconds != 0);
assert(resolution != 0);
assert((resolution * 1000) >= microseconds);
memset(sched, 0, sizeof(*sched));
sched->m_idle_microseconds = microseconds;
sched->m_resolution = resolution;
sched->m_next_sleep = (resolution * 1000) / microseconds;
}
//! Iterate and check if can sleep.
static inline UINT32 ThreadIdleScheduler_NextSleep(ThreadIdleScheduler *sched)
{
// advance and check if thread can sleep
if (++sched->m_i == sched->m_next_sleep)
{
sched->m_i = 0;
return sched->m_resolution;
}
return 0;
}
// ------------------------------------------------------------------------------------------
typedef struct _SystemTimer
{
INT32 granularity;
} SystemTimer;
static LARGE_INTEGER g_SystemTimerFrequency;
static BOOL g_SystemTimerUseQpc = FALSE;
//! Set granularity of the system timer.
static BOOL SystemTimer_SetGranularity(SystemTimer *timer, UINT32 granularity)
{
#ifndef PA_WINRT
TIMECAPS caps;
timer->granularity = granularity;
if (timeGetDevCaps(&caps, sizeof(caps)) == MMSYSERR_NOERROR)
{
if (timer->granularity < (INT32)caps.wPeriodMin)
timer->granularity = (INT32)caps.wPeriodMin;
}
if (timeBeginPeriod(timer->granularity) != TIMERR_NOERROR)
{
PRINT(("SetSystemTimer: timeBeginPeriod(1) failed!\n"));
timer->granularity = 10;
return FALSE;
}
#else
(void)granularity;
// UWP does not support increase of the timer precision change and thus calling WaitForSingleObject with anything
// below 10 milliseconds will cause underruns for input and output stream.
timer->granularity = 10;
#endif
return TRUE;
}
//! Restore granularity of the system timer.
static void SystemTimer_RestoreGranularity(SystemTimer *timer)
{
#ifndef PA_WINRT
if (timer->granularity != 0)
{
if (timeEndPeriod(timer->granularity) != TIMERR_NOERROR)
{
PRINT(("RestoreSystemTimer: timeEndPeriod(1) failed!\n"));
}
}
#else
(void)timer;
#endif
}
//! Initialize high-resolution time getter.
static void SystemTimer_InitializeTimeGetter()
{
g_SystemTimerUseQpc = QueryPerformanceFrequency(&g_SystemTimerFrequency);
}
//! Get high-resolution time in milliseconds (using QPC by default).
static inline LONGLONG SystemTimer_GetTime(SystemTimer *timer)
{
(void)timer;
// QPC: https://docs.microsoft.com/en-us/windows/win32/sysinfo/acquiring-high-resolution-time-stamps
if (g_SystemTimerUseQpc)
{
LARGE_INTEGER now;
QueryPerformanceCounter(&now);
return (now.QuadPart * 1000LL) / g_SystemTimerFrequency.QuadPart;
}
else
{
#ifdef PA_WINRT
return GetTickCount64();
#else
return timeGetTime();
#endif
}
}
// ------------------------------------------------------------------------------------------
/*static double nano100ToMillis(REFERENCE_TIME ref)
{
// 1 nano = 0.000000001 seconds
//100 nano = 0.0000001 seconds
//100 nano = 0.0001 milliseconds
return ((double)ref) * 0.0001;
}*/
// ------------------------------------------------------------------------------------------
static double nano100ToSeconds(REFERENCE_TIME ref)
{
// 1 nano = 0.000000001 seconds
//100 nano = 0.0000001 seconds
//100 nano = 0.0001 milliseconds
return ((double)ref) * 0.0000001;
}
// ------------------------------------------------------------------------------------------
/*static REFERENCE_TIME MillisTonano100(double ref)
{
// 1 nano = 0.000000001 seconds
//100 nano = 0.0000001 seconds
//100 nano = 0.0001 milliseconds
return (REFERENCE_TIME)(ref / 0.0001);
}*/
// ------------------------------------------------------------------------------------------
static REFERENCE_TIME SecondsTonano100(double ref)
{
// 1 nano = 0.000000001 seconds
//100 nano = 0.0000001 seconds
//100 nano = 0.0001 milliseconds
return (REFERENCE_TIME)(ref / 0.0000001);
}
// ------------------------------------------------------------------------------------------
// Makes Hns period from frames and sample rate
static REFERENCE_TIME MakeHnsPeriod(UINT32 nFrames, DWORD nSamplesPerSec)
{
return (REFERENCE_TIME)((10000.0 * 1000 / nSamplesPerSec * nFrames) + 0.5);
}
// ------------------------------------------------------------------------------------------
// Converts PaSampleFormat to bits per sample value
// Note: paCustomFormat stands for 8.24 format (24-bits inside 32-bit containers)
static WORD PaSampleFormatToBitsPerSample(PaSampleFormat format_id)
{
switch (format_id & ~paNonInterleaved)
{
case paFloat32:
case paInt32: return 32;
case paCustomFormat:
case paInt24: return 24;
case paInt16: return 16;
case paInt8:
case paUInt8: return 8;
}
return 0;
}
// ------------------------------------------------------------------------------------------
// Convert PaSampleFormat to valid sample format for I/O, e.g. if paCustomFormat is specified
// it will be converted to paInt32, other formats pass through
// Note: paCustomFormat stands for 8.24 format (24-bits inside 32-bit containers)
static PaSampleFormat GetSampleFormatForIO(PaSampleFormat format_id)
{
return ((format_id & ~paNonInterleaved) == paCustomFormat ?
(paInt32 | (format_id & paNonInterleaved ? paNonInterleaved : 0)) : format_id);
}
// ------------------------------------------------------------------------------------------
// Converts Hns period into number of frames
static UINT32 MakeFramesFromHns(REFERENCE_TIME hnsPeriod, UINT32 nSamplesPerSec)
{
UINT32 nFrames = (UINT32)( // frames =
1.0 * hnsPeriod * // hns *
nSamplesPerSec / // (frames / s) /
1000 / // (ms / s) /
10000 // (hns / s) /
+ 0.5 // rounding
);
return nFrames;
}