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172 lines
4.7 KiB
172 lines
4.7 KiB
#ifndef SEND_DSC_STREAM_H
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#define SEND_DSC_STREAM_H
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#include "agc.h"
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#include <pshpack8.h> /* Assume 8 byte packing throughout */
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#define MAX_DSC_DESCRIPTION_STRING 200
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#define MAX_NUMBER_DSCAPTURE_DEVICES 16
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#define NUM_AUDIOPACKETS 2
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#define MIN_NUM_DSC_SEGMENTS 5
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#define DSOUND_DLL "dsound.dll"
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#define DISABLE_DSC_REGKEY "Software\\Microsoft\\Internet Audio\\NacObject"
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#define DISABLE_DSC_REGVALUE "DisableDirectSoundCapture"
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typedef HRESULT (WINAPI *DS_CAP_CREATE)(LPGUID, LPDIRECTSOUNDCAPTURE *, LPUNKNOWN);
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typedef HRESULT (WINAPI *DS_CAP_ENUM)(LPDSENUMCALLBACKA, LPVOID);
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struct DSC_CAPTURE_INFO
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{
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GUID guid;
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char szDescription[MAX_DSC_DESCRIPTION_STRING];
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UINT uWaveId;
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BOOL bAllocated;
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};
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// really a namespace
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class DSC_Manager
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{
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public:
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static HRESULT Initialize();
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static HRESULT MapWaveIdToGuid(UINT uwaveId, GUID *pGuid);
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static HRESULT CreateInstance(GUID *pGuid, IDirectSoundCapture **pDSC);
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private:
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static BOOL s_bInitialized;
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static DSC_CAPTURE_INFO s_aDSC[MAX_NUMBER_DSCAPTURE_DEVICES];
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static int s_nCaptureDevices; // number in array
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static BOOL CALLBACK DSEnumCallback(LPGUID lpGuid, LPCSTR lpcstrDescription,
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LPCSTR lpcstrModule, LPVOID lpContext);
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static HINSTANCE s_hDSCLib;
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static DS_CAP_CREATE s_pDSCapCreate;
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static DS_CAP_ENUM s_pDSCapEnum;
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};
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class SendDSCStream : public SendMediaStream, public IAudioChannel, public IDTMFSend
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{
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private:
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AcmFilter *m_pAudioFilter; // encapsulates codec
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WAVEFORMATEX m_wfPCM; // uncompressed recording format
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WAVEFORMATEX m_wfCompressed; // compressed format
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AudioSilenceDetector m_AudioMonitor;
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MMIOSRC m_mmioSrc; // handle to input file
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static DWORD CALLBACK StartRecordingThread (LPVOID pVoid);
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DWORD RecordingThread();
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STDMETHODIMP_(void) UnConfigure(void);
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LONG m_lRefCount;
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IDirectSoundCapture *m_pDSC; // DSC device object
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IDirectSoundCaptureBuffer *m_pDSCBuffer; // the capture buffer
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HANDLE m_hEvent; // DSC Notify Event
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DWORD m_dwSamplesPerFrame; // number of PCM samples represented in a frame
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DWORD m_dwNumFrames; // number of individual frames in the DSC Buffer
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DWORD m_dwFrameSize; // the size of a PCM frame in bytes
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DWORD m_dwDSCBufferSize; // the size of the DSC Buffer (== m_dwFrameSize * m_dwNumFrames)
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DWORD m_dwSilenceTime; // amount of silence accumulated so far in Milliseconds
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DWORD m_dwFrameTimeMS; // the length of a frame in milliseconds
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HRESULT CreateAudioPackets(MEDIAPACKETINIT *mpi);
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HRESULT ReleaseAudioPackets();
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AudioPacket *m_aPackets[NUM_AUDIOPACKETS];
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// private methods that the thread uses
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HRESULT CreateDSCBuffer();
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HRESULT ReleaseDSCBuffer();
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DWORD ProcessFrame(DWORD dwBufferPos, BOOL fMark);
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DWORD WaitForControl();
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DWORD YieldControl();
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BOOL ThreadExitCheck();
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void UpdateTimestamp();
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HRESULT SendPacket(AudioPacket *pAP);
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BOOL UpdateQosStats(UINT uStatType, UINT uStatValue1, UINT uStatValue2);
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// members used primarily by the recording thread
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BOOL m_bFullDuplex;
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BOOL m_bJammed; // set by the recording thread to indicate an error on the device
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BOOL m_bCanSignalOpen;
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BOOL m_bCanSignalFail;
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int m_nFailCount;
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AGC m_agc; // thread uses AGC object for AutoMix
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BOOL m_bAutoMix; // indicates if AutoMixing is turned off or on
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// DTMF stuff
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DTMFQueue *m_pDTMF;
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HRESULT __stdcall SendDTMF();
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public:
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SendDSCStream();
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virtual ~SendDSCStream();
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// IUnknown
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virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject);
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virtual ULONG STDMETHODCALLTYPE AddRef(void);
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virtual ULONG STDMETHODCALLTYPE Release(void);
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// IMediaChannel
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virtual STDMETHODIMP GetProperty(DWORD dwProp, PVOID pBuf, LPUINT pcbBuf);
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virtual STDMETHODIMP SetProperty(DWORD dwProp, PVOID pBuf, UINT cbBuf);
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virtual HRESULT STDMETHODCALLTYPE Configure(
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BYTE *pFormat,
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UINT cbFormat,
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BYTE *pChannelParams,
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UINT cbParams,
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IUnknown *pUnknown);
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HRESULT STDMETHODCALLTYPE SetNetworkInterface(IUnknown *pUnknown)
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{
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return SendMediaStream::SetNetworkInterface(pUnknown);
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}
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virtual STDMETHODIMP Start(void);
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virtual STDMETHODIMP Stop(void);
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STDMETHODIMP_(DWORD) GetState()
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{
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return SendMediaStream::GetState();
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}
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virtual HRESULT STDMETHODCALLTYPE SetMaxBitrate(UINT uMaxBitrate);
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// IAudioChannel
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virtual STDMETHODIMP GetSignalLevel(UINT *pSignalStrength);
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// IDTMFSend
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virtual HRESULT __stdcall AddDigit(int nDigit);
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virtual HRESULT __stdcall ResetDTMF();
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// Other virtual methods
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virtual HRESULT Initialize(DataPump *pdp);
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virtual DWORD Send();
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virtual void EndSend();
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};
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#include <poppack.h> /* End byte packing */
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#endif
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