Source code of Windows XP (NT5)
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
/*==========================================================================
* * Copyright (C) 1999 Microsoft Corporation. All Rights Reserved. * * File: ClientRecordSubSystem.h * Content: Recording sub-system. * * History: * Date By Reason * ==== == ====== * 07/19/99 rodtoll Modified from original * 08/25/99 rodtoll General Cleanup/Modifications to support new * compression sub-system. * 08/27/99 rodtoll General cleanup/Simplification of recording subsystem * Added reset of message when target changes * Fixed recording start/stop notifications * 09/29/99 pnewson Major AGC overhaul * 10/29/99 rodtoll Bug #113726 - Integrate Voxware Codecs, updating to use new * pluggable codec architecture. * 11/12/99 rodtoll Updated to use new recording classes, improved error * handling and new initialize function. * rodtoll Added new high CPU handling code for record. * 11/13/99 rodtoll Added parameter to GetNextFrame * 11/18/99 rodtoll Re-activated recording pointer lockup detection code * 01/10/00 pnewson AGC and VA tuning * 01/14/2000 rodtoll Updated to handle new multiple targets * 02/08/2000 rodtoll Bug #131496 - Selecting DVTHRESHOLD_DEFAULT results in voice * never being detected * 02/17/2000 rodtoll Bug #133691 - Choppy audio - queue was not adapting * Added instrumentation * 04/05/2000 rodtoll Updated to use new async, no buffer copy sends, removed old transmit buffer * 04/19/2000 pnewson Fix to make AGC code work properly with VA off * 07/09/2000 rodtoll Added signature bytes * 08/18/2000 rodtoll Bug #42542 - DPVoice retrofit: Voice retrofit locks up after host migration * 08/29/2000 rodtoll Bug #43553 - Start() returns 0x80004005 after lockup * rodtoll Bug #43620 - DPVOICE: Recording buffer locks up on Aureal Vortex (VxD). * Updated reset procedure so it ignores Stop failures and if Start() fails * it tries resetting the recording system. * 08/31/2000 rodtoll Bug #43804 - DVOICE: dwSensitivity structure member is confusing - should be dwThreshold * 04/11/2001 rodtoll WINBUG #221494 DPVOICE: Updates to lockup detection methods * ***************************************************************************/#ifndef __CLIENTRECORDSUBSYSTEM_H
#define __CLIENTRECORDSUBSYSTEM_H
class CAGCVA;
// CClientRecordSubSystem
//
// This class implements the recording subsystem for the BattleCom client.
// It works closely with the control CShadowClientControl object to
// provide the recording / compression and transmissions portions of the
// client. This includes addition of microphone clicks to outgoing
// audio streams when appropriate.
//
// The core of the recording system is a finite state machine which
// is used to provide a way of managing the recording system's
// state and to provide smooth transitions between various
// states.
//
// It looks to the CShadowClientControl object to detect when keys
// are pressed and to provide neccessary parameters.
//
#define VSIG_CLIENTRECORDSYSTEM 'SRCV'
#define VSIG_CLIENTRECORDSYSTEM_FREE 'SRC_'
//
class CClientRecordSubSystem{protected: // State Machine States
typedef enum { RECORDSTATE_IDLE = 0, // Recording is idle, no transmissions required
RECORDSTATE_VA, // Voice activated mode
RECORDSTATE_PTT // Push to talk mode
} RecordState;
public: CClientRecordSubSystem( CDirectVoiceClientEngine *clientEngine ); ~CClientRecordSubSystem();
protected:
friend class CDirectVoiceClientEngine;
HRESULT Initialize();
HRESULT GetNextFrame( LPBOOL fContinue );
BOOL IsMuted(); BOOL IsValidTarget(); inline BOOL IsPTT() { return !IsVA(); }; inline BOOL IsVA() { return (m_clientEngine->m_dvClientConfig.dwFlags & DVCLIENTCONFIG_MANUALVOICEACTIVATED || m_clientEngine->m_dvClientConfig.dwFlags & DVCLIENTCONFIG_AUTOVOICEACTIVATED); }; BOOL CheckVA(); HRESULT DoAGC(); void EndMessage(); void StartMessage();
HRESULT TransmitFrame();
protected: // FSM
HRESULT BuildAndTransmitSpeechHeader( BOOL bSendToServer ); HRESULT BuildAndTransmitSpeechWithTarget( BOOL bSendToServer ); HRESULT RecordFSM(); HRESULT HandleAutoVolumeAdjust(); HRESULT CleanupForReset(); HRESULT ResetForLockup();
void InitStats(); void BeginStats(); void CompleteStats();
protected:
DWORD m_dwSignature;
DWORD m_dwSilentTime; // # of ms that the input has been silent
DWORD m_dwFrameTime; // Amount of ms per frame
CAGCVA* m_pagcva; // Auto Gain control and Voice Activation algorithm
void DoFrameCheck(); protected:
RecordState m_recordState; // Current state of the FSM
PDPVCOMPRESSOR m_converter; // AudioConverter for outgoing data
DWORD m_uncompressedSize; // Size of frame in uncompressed format
DWORD m_compressedSize; // Maximum size in bytes of compressed frame
BOOL m_eightBit; // Is recording format 8-bit?
DWORD m_remain; // # of trailing frames we should have
unsigned char m_currentBuffer; // Buffer ID of current recording buffer
unsigned long m_framesPerPeriod; // # of subbuffers in the recording bfufer
CDirectVoiceClientEngine *m_clientEngine; // The client engine this subsystem is for
BOOL m_transmitFrame; // Transmit Current frame?
unsigned char *m_bufferPtr; // Pointer to current buffer?
DWORD m_dwSilenceTimeout; // Amount of silence in ms before transmissions tops
BOOL m_lastFrameTransmitted; // Was the last frame transmitted
unsigned char m_msgNum; // Current message number
unsigned char m_seqNum; // Current sequence #
LPBYTE m_pbConstructBuffer; DWORD m_dwCurrentPower; // Power level of the last packet
DWORD m_dwLastTargetVersion; // Version of target info on last frame (to check for changes)
LONG m_lSavedVolume; // System record volume when recording started
BOOL m_fRecordVolumeSaved; // Was the system record volume saved?
DWORD m_dwResetCount; DWORD m_dwNextReadPos; DWORD m_dwLastReadPos; DWORD m_dwLastBufferPos; DWORD m_dwPassesSincePosChange; BOOL m_fIgnoreFrame; DWORD m_dwLastFrameTime; // GetTickCount() at last frame
BOOL m_fLostFocus; DWORD m_dwFrameCount; DVID *m_prgdvidTargetCache; DWORD m_dwTargetCacheSize; DWORD m_dwTargetCacheEntries; DWORD m_dwFullBufferSize; // Cached version of m_uncompressedSize*m_framesPerPeriod
};
#endif
|
