1HEADmaster

18 files changed, 2993 insertions, 0 deletions

diff --git a/utils/voice_tweak/StdAfx.cpp b/utils/voice_tweak/StdAfx.cpp
new file mode 100644
index 0000000..a4f319f
--- /dev/null
+++ b/utils/voice_tweak/StdAfx.cpp
@@ -0,0 +1,15 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// stdafx.cpp : source file that includes just the standard includes
+//	voice_tweak.pch will be the pre-compiled header
+//	stdafx.obj will contain the pre-compiled type information
+
+#include "stdafx.h"
+
+
+
diff --git a/utils/voice_tweak/StdAfx.h b/utils/voice_tweak/StdAfx.h
new file mode 100644
index 0000000..e732850
--- /dev/null
+++ b/utils/voice_tweak/StdAfx.h
@@ -0,0 +1,36 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// stdafx.h : include file for standard system include files,
+//  or project specific include files that are used frequently, but
+//      are changed infrequently
+//
+
+#if !defined(AFX_STDAFX_H__87791E16_378A_44F7_B9EE_95423D655A32__INCLUDED_)
+#define AFX_STDAFX_H__87791E16_378A_44F7_B9EE_95423D655A32__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#define VC_EXTRALEAN		// Exclude rarely-used stuff from Windows headers
+
+#include <afxwin.h>         // MFC core and standard components
+#include <afxext.h>         // MFC extensions
+#include <afxdtctl.h>		// MFC support for Internet Explorer 4 Common Controls
+#ifndef _AFX_NO_AFXCMN_SUPPORT
+#include <afxcmn.h>			// MFC support for Windows Common Controls
+#endif // _AFX_NO_AFXCMN_SUPPORT
+
+#include <process.h>
+#include <mmsystem.h>
+
+
+//{{AFX_INSERT_LOCATION}}
+// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
+
+#endif // !defined(AFX_STDAFX_H__87791E16_378A_44F7_B9EE_95423D655A32__INCLUDED_)
diff --git a/utils/voice_tweak/dxsdk/dvoice.h b/utils/voice_tweak/dxsdk/dvoice.h
new file mode 100644
index 0000000..b524046
--- /dev/null
+++ b/utils/voice_tweak/dxsdk/dvoice.h
@@ -0,0 +1,857 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+/*==========================================================================;
+ *
+ *  Copyright (C) 1999 Microsoft Corporation.  All Rights Reserved.
+ *
+ *  File:       dpvoice.h
+ *  Content:    DirectPlayVoice include file
+ ***************************************************************************/
+
+#ifndef __DVOICE__
+#define __DVOICE__
+
+#include <ole2.h>			// for DECLARE_INTERFACE and HRESULT
+#include <mmsystem.h>
+#include <mmreg.h>
+#include <msacm.h>
+#include "dsound.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/****************************************************************************
+ *
+ * DirectPlayVoice CLSIDs
+ *
+ ****************************************************************************/
+
+
+// {B9F3EB85-B781-4ac1-8D90-93A05EE37D7D}
+DEFINE_GUID(CLSID_DirectPlayVoiceClient, 
+0xb9f3eb85, 0xb781, 0x4ac1, 0x8d, 0x90, 0x93, 0xa0, 0x5e, 0xe3, 0x7d, 0x7d);
+
+// {D3F5B8E6-9B78-4a4c-94EA-CA2397B663D3}
+DEFINE_GUID(CLSID_DirectPlayVoiceServer, 
+0xd3f5b8e6, 0x9b78, 0x4a4c, 0x94, 0xea, 0xca, 0x23, 0x97, 0xb6, 0x63, 0xd3);
+
+// {0F0F094B-B01C-4091-A14D-DD0CD807711A}
+DEFINE_GUID(CLSID_DirectPlayVoiceTest, 
+0xf0f094b, 0xb01c, 0x4091, 0xa1, 0x4d, 0xdd, 0xc, 0xd8, 0x7, 0x71, 0x1a);
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Interface IIDs
+ *
+ ****************************************************************************/
+
+
+// {1DFDC8EA-BCF7-41d6-B295-AB64B3B23306}
+DEFINE_GUID(IID_IDirectPlayVoiceClient, 
+0x1dfdc8ea, 0xbcf7, 0x41d6, 0xb2, 0x95, 0xab, 0x64, 0xb3, 0xb2, 0x33, 0x6);
+
+// {FAA1C173-0468-43b6-8A2A-EA8A4F2076C9}
+DEFINE_GUID(IID_IDirectPlayVoiceServer, 
+0xfaa1c173, 0x468, 0x43b6, 0x8a, 0x2a, 0xea, 0x8a, 0x4f, 0x20, 0x76, 0xc9);
+
+// {D26AF734-208B-41da-8224-E0CE79810BE1}
+DEFINE_GUID(IID_IDirectPlayVoiceTest,
+0xd26af734, 0x208b, 0x41da, 0x82, 0x24, 0xe0, 0xce, 0x79, 0x81, 0xb, 0xe1);
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Compression Type GUIDs
+ *
+ ****************************************************************************/
+
+// MS-ADPCM 32.8 kbit/s
+//
+// {699B52C1-A885-46a8-A308-97172419ADC7}
+DEFINE_GUID(DPVCTGUID_ADPCM,
+0x699b52c1, 0xa885, 0x46a8, 0xa3, 0x8, 0x97, 0x17, 0x24, 0x19, 0xad, 0xc7);
+
+// Microsoft GSM 6.10 13 kbit/s
+//
+// {24768C60-5A0D-11d3-9BE4-525400D985E7}
+DEFINE_GUID(DPVCTGUID_GSM,
+0x24768c60, 0x5a0d, 0x11d3, 0x9b, 0xe4, 0x52, 0x54, 0x0, 0xd9, 0x85, 0xe7);
+
+// MS-PCM 64 kbit/s
+// 
+// {8DE12FD4-7CB3-48ce-A7E8-9C47A22E8AC5}
+DEFINE_GUID(DPVCTGUID_NONE,
+0x8de12fd4, 0x7cb3, 0x48ce, 0xa7, 0xe8, 0x9c, 0x47, 0xa2, 0x2e, 0x8a, 0xc5);
+
+// Voxware SC03 3.2kbit/s
+//
+// {7D82A29B-2242-4f82-8F39-5D1153DF3E41}
+DEFINE_GUID(DPVCTGUID_SC03,
+0x7d82a29b, 0x2242, 0x4f82, 0x8f, 0x39, 0x5d, 0x11, 0x53, 0xdf, 0x3e, 0x41);
+
+// Voxware SC06 6.4kbit/s
+//
+// {53DEF900-7168-4633-B47F-D143916A13C7}
+DEFINE_GUID(DPVCTGUID_SC06,
+0x53def900, 0x7168, 0x4633, 0xb4, 0x7f, 0xd1, 0x43, 0x91, 0x6a, 0x13, 0xc7);
+
+// TrueSpeech(TM) 8.6 kbit/s
+//
+// {D7954361-5A0B-11d3-9BE4-525400D985E7}
+DEFINE_GUID(DPVCTGUID_TRUESPEECH,
+0xd7954361, 0x5a0b, 0x11d3, 0x9b, 0xe4, 0x52, 0x54, 0x0, 0xd9, 0x85, 0xe7);
+
+// Voxware VR12 1.4kbit/s
+//
+// {FE44A9FE-8ED4-48bf-9D66-1B1ADFF9FF6D}
+DEFINE_GUID(DPVCTGUID_VR12,
+0xfe44a9fe, 0x8ed4, 0x48bf, 0x9d, 0x66, 0x1b, 0x1a, 0xdf, 0xf9, 0xff, 0x6d);
+
+// Define the default compression type
+#define DPVCTGUID_DEFAULT	DPVCTGUID_SC03
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Interface Pointer definitions
+ *
+ ****************************************************************************/
+
+typedef struct IDirectPlayVoiceClient FAR *LPDIRECTPLAYVOICECLIENT, *PDIRECTPLAYVOICECLIENT;
+typedef struct IDirectPlayVoiceServer FAR *LPDIRECTPLAYVOICESERVER, *PDIRECTPLAYVOICESERVER;
+typedef struct IDirectPlayVoiceTest FAR *LPDIRECTPLAYVOICETEST, *PDIRECTPLAYVOICETEST;
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Callback Functions
+ *
+ ****************************************************************************/
+typedef HRESULT (FAR PASCAL *PDVMESSAGEHANDLER)(
+    PVOID   pvUserContext,
+    DWORD   dwMessageType,
+    LPVOID  lpMessage
+);
+
+typedef PDVMESSAGEHANDLER LPDVMESSAGEHANDLER;
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Datatypes (Non-Structure / Non-Message)
+ *
+ ****************************************************************************/
+
+typedef DWORD DVID, *LPDVID, *PDVID;
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Message Types
+ *
+ ****************************************************************************/
+
+#define DVMSGID_BASE                        0x0000
+
+#define DVMSGID_MINBASE                     (DVMSGID_CREATEVOICEPLAYER)
+#define DVMSGID_CREATEVOICEPLAYER           (DVMSGID_BASE+0x0001)
+#define DVMSGID_DELETEVOICEPLAYER           (DVMSGID_BASE+0x0002)
+#define DVMSGID_SESSIONLOST                 (DVMSGID_BASE+0x0003)
+#define DVMSGID_PLAYERVOICESTART            (DVMSGID_BASE+0x0004)
+#define DVMSGID_PLAYERVOICESTOP             (DVMSGID_BASE+0x0005)
+#define DVMSGID_RECORDSTART                 (DVMSGID_BASE+0x0006)
+#define DVMSGID_RECORDSTOP                  (DVMSGID_BASE+0x0007)
+#define DVMSGID_CONNECTRESULT               (DVMSGID_BASE+0x0008)
+#define DVMSGID_DISCONNECTRESULT            (DVMSGID_BASE+0x0009)
+#define DVMSGID_INPUTLEVEL                  (DVMSGID_BASE+0x000A)
+#define DVMSGID_OUTPUTLEVEL                 (DVMSGID_BASE+0x000B)
+#define DVMSGID_HOSTMIGRATED                (DVMSGID_BASE+0x000C)
+#define DVMSGID_SETTARGETS                  (DVMSGID_BASE+0x000D)
+#define DVMSGID_PLAYEROUTPUTLEVEL           (DVMSGID_BASE+0x000E)
+#define DVMSGID_LOSTFOCUS                   (DVMSGID_BASE+0x0010)
+#define DVMSGID_GAINFOCUS                   (DVMSGID_BASE+0x0011)
+#define DVMSGID_LOCALHOSTSETUP				(DVMSGID_BASE+0x0012)
+#define DVMSGID_MAXBASE                     (DVMSGID_LOCALHOSTSETUP)
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Constants
+ *
+ ****************************************************************************/
+
+//
+// Buffer Aggresiveness Value Ranges
+//
+#define DVBUFFERAGGRESSIVENESS_MIN          0x00000001
+#define DVBUFFERAGGRESSIVENESS_MAX          0x00000064
+#define DVBUFFERAGGRESSIVENESS_DEFAULT      0x00000000
+
+// 
+// Buffer Quality Value Ranges
+//
+#define DVBUFFERQUALITY_MIN                 0x00000001
+#define DVBUFFERQUALITY_MAX                 0x00000064
+#define DVBUFFERQUALITY_DEFAULT             0x00000000
+
+#define DVID_SYS                0
+
+//
+// Used to identify the session host in client/server
+//
+#define DVID_SERVERPLAYER       1
+
+//
+// Used to target all players
+//
+#define DVID_ALLPLAYERS         0
+
+//
+// Used to identify the main buffer
+//
+#define DVID_REMAINING          0xFFFFFFFF
+
+// 
+// Input level range
+//
+#define DVINPUTLEVEL_MIN                    0x00000000
+#define DVINPUTLEVEL_MAX                    0x00000063	// 99 decimal
+
+#define DVNOTIFYPERIOD_MINPERIOD            20
+
+
+#define DVPLAYBACKVOLUME_DEFAULT            DSBVOLUME_MAX
+
+#define DVRECORDVOLUME_LAST                 0x00000001
+
+
+//
+// Use the default value
+//
+#define DVTHRESHOLD_DEFAULT               0xFFFFFFFF
+
+//
+// Threshold Ranges
+//
+#define DVTHRESHOLD_MIN                   0x00000000
+#define DVTHRESHOLD_MAX                   0x00000063	// 99 decimal
+
+//
+// Threshold field is not used 
+//
+#define DVTHRESHOLD_UNUSED                0xFFFFFFFE
+
+//
+// Session Types
+//
+#define DVSESSIONTYPE_PEER                  0x00000001
+#define DVSESSIONTYPE_MIXING                0x00000002
+#define DVSESSIONTYPE_FORWARDING            0x00000003
+#define DVSESSIONTYPE_ECHO                  0x00000004
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Flags
+ *
+ ****************************************************************************/
+
+
+// 
+// Enable automatic adjustment of the recording volume
+//
+#define DVCLIENTCONFIG_AUTORECORDVOLUME     0x00000008
+
+//
+// Enable automatic voice activation
+//
+#define DVCLIENTCONFIG_AUTOVOICEACTIVATED   0x00000020
+
+// 
+// Enable echo suppression
+//
+#define DVCLIENTCONFIG_ECHOSUPPRESSION      0x08000000
+
+// 
+// Voice Activation manual mode
+//
+#define DVCLIENTCONFIG_MANUALVOICEACTIVATED 0x00000004
+
+// 
+// Only playback voices that have buffers created for them
+//
+#define DVCLIENTCONFIG_MUTEGLOBAL           0x00000010
+
+// 
+// Mute the playback
+//
+#define DVCLIENTCONFIG_PLAYBACKMUTE         0x00000002
+
+//
+// Mute the recording 
+//
+#define DVCLIENTCONFIG_RECORDMUTE           0x00000001
+
+// 
+// Complete the operation before returning
+//
+#define DVFLAGS_SYNC                        0x00000001
+
+// 
+// Just check to see if wizard has been run, and if so what it's results were
+//
+#define DVFLAGS_QUERYONLY                   0x00000002
+
+//
+// Shutdown the voice session without migrating the host
+//
+#define DVFLAGS_NOHOSTMIGRATE               0x00000008
+
+// 
+// Allow the back button to be enabled in the wizard
+//
+#define DVFLAGS_ALLOWBACK                   0x00000010
+
+//
+// Disable host migration in the voice session
+//
+#define DVSESSION_NOHOSTMIGRATION           0x00000001
+
+// 
+// Server controlled targetting
+//
+#define DVSESSION_SERVERCONTROLTARGET       0x00000002
+
+//
+// Use DirectSound Normal Mode instead of priority 
+//
+#define DVSOUNDCONFIG_NORMALMODE            0x00000001
+
+//
+// Automatically select the microphone
+//
+#define DVSOUNDCONFIG_AUTOSELECT            0x00000002
+
+// 
+// Run in half duplex mode
+//
+#define DVSOUNDCONFIG_HALFDUPLEX            0x00000004
+
+// 
+// No volume controls are available for the recording device
+//
+#define DVSOUNDCONFIG_NORECVOLAVAILABLE     0x00000010
+
+// 
+// Disable capture sharing
+//
+#define DVSOUNDCONFIG_NOFOCUS               0x20000000
+
+// 
+// Set system conversion quality to high
+//
+#define DVSOUNDCONFIG_SETCONVERSIONQUALITY	0x00000008
+
+//
+// Enable strict focus mode
+// 
+#define DVSOUNDCONFIG_STRICTFOCUS           0x40000000
+
+//
+// Player is in half duplex mode
+//
+#define DVPLAYERCAPS_HALFDUPLEX             0x00000001
+
+// 
+// Specifies that player is the local player
+//
+#define DVPLAYERCAPS_LOCAL                  0x00000002
+
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Structures (Non-Message)
+ *
+ ****************************************************************************/
+
+
+//
+// DirectPlayVoice Caps
+// (GetCaps / SetCaps)
+//
+typedef struct
+{
+    DWORD   dwSize;                 // Size of this structure
+    DWORD   dwFlags;                // Caps flags
+} DVCAPS, *LPDVCAPS, *PDVCAPS;
+
+//
+// DirectPlayVoice Client Configuration
+// (Connect / GetClientConfig)
+//
+typedef struct
+{
+    DWORD   dwSize;                 // Size of this structure
+    DWORD   dwFlags;                // Flags for client config (DVCLIENTCONFIG_...)
+    LONG    lRecordVolume;          // Recording volume 
+    LONG    lPlaybackVolume;        // Playback volume
+    DWORD   dwThreshold;          // Voice Activation Threshold
+    DWORD   dwBufferQuality;        // Buffer quality
+    DWORD   dwBufferAggressiveness; // Buffer aggressiveness
+    DWORD   dwNotifyPeriod;         // Period of notification messages (ms)
+} DVCLIENTCONFIG, *LPDVCLIENTCONFIG, *PDVCLIENTCONFIG;
+
+//
+// DirectPlayVoice Compression Type Information
+// (GetCompressionTypes)
+//
+typedef struct
+{
+    DWORD   dwSize;                 // Size of this structure
+    GUID    guidType;               // GUID that identifies this compression type
+    LPWSTR  lpszName;               // String name of this compression type
+    LPWSTR  lpszDescription;        // Description for this compression type
+    DWORD   dwFlags;                // Flags for this compression type
+    DWORD   dwMaxBitsPerSecond;		// Maximum # of bit/s this compression type uses
+} DVCOMPRESSIONINFO, *LPDVCOMPRESSIONINFO, *PDVCOMPRESSIONINFO;
+
+//
+// DirectPlayVoice Session Description
+// (Host / GetSessionDesc)
+//
+typedef struct
+{
+    DWORD   dwSize;                 // Size of this structure
+    DWORD   dwFlags;                // Session flags (DVSESSION_...)
+    DWORD   dwSessionType;          // Session type (DVSESSIONTYPE_...)
+    GUID    guidCT;                 // Compression Type to use
+    DWORD   dwBufferQuality;        // Buffer quality
+    DWORD   dwBufferAggressiveness; // Buffer aggresiveness
+} DVSESSIONDESC, *LPDVSESSIONDESC, *PDVSESSIONDESC;
+
+// 
+// DirectPlayVoice Client Sound Device Configuration
+// (Connect / GetSoundDeviceConfig)
+//
+typedef struct
+{
+    DWORD                   dwSize;                 // Size of this structure
+    DWORD                   dwFlags;                // Flags for sound config (DVSOUNDCONFIG_...)
+    GUID                    guidPlaybackDevice;     // GUID of the playback device to use
+    LPDIRECTSOUND           lpdsPlaybackDevice;     // DirectSound Object to use (optional)
+    GUID                    guidCaptureDevice;      // GUID of the capture device to use
+    LPDIRECTSOUNDCAPTURE    lpdsCaptureDevice;      // DirectSoundCapture Object to use (optional)
+    HWND                    hwndAppWindow;          // HWND of your application's top-level window
+    LPDIRECTSOUNDBUFFER     lpdsMainBuffer;         // DirectSoundBuffer to use for playback (optional)
+    DWORD                   dwMainBufferFlags;      // Flags to pass to Play() on the main buffer
+    DWORD                   dwMainBufferPriority;   // Priority to set when calling Play() on the main buffer
+} DVSOUNDDEVICECONFIG, *LPDVSOUNDDEVICECONFIG, *PDVSOUNDDEVICECONFIG;
+
+/****************************************************************************
+ *
+ * DirectPlayVoice message handler call back structures
+ *
+ ****************************************************************************/
+
+//
+// Result of the Connect() call.  (If it wasn't called Async)
+// (DVMSGID_CONNECTRESULT)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    HRESULT hrResult;                       // Result of the Connect() call
+} DVMSG_CONNECTRESULT, *LPDVMSG_CONNECTRESULT, *PDVMSG_CONNECTRESULT;
+
+//
+// A new player has entered the voice session
+// (DVMSGID_CREATEVOICEPLAYER)
+// 
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DVID    dvidPlayer;                     // DVID of the player who joined
+    DWORD   dwFlags;                        // Player flags (DVPLAYERCAPS_...)
+    PVOID	pvPlayerContext;                // Context value for this player (user set)
+} DVMSG_CREATEVOICEPLAYER, *LPDVMSG_CREATEVOICEPLAYER, *PDVMSG_CREATEVOICEPLAYER;
+
+//
+// A player has left the voice session
+// (DVMSGID_DELETEVOICEPLAYER)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DVID    dvidPlayer;                     // DVID of the player who left
+    PVOID	pvPlayerContext;                // Context value for the player
+} DVMSG_DELETEVOICEPLAYER, *LPDVMSG_DELETEVOICEPLAYER, *PDVMSG_DELETEVOICEPLAYER;
+
+//
+// Result of the Disconnect() call.  (If it wasn't called Async)
+// (DVMSGID_DISCONNECTRESULT)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    HRESULT hrResult;                       // Result of the Disconnect() call
+} DVMSG_DISCONNECTRESULT, *LPDVMSG_DISCONNECTRESULT, *PDVMSG_DISCONNECTRESULT;
+
+// 
+// The voice session host has migrated.
+// (DVMSGID_HOSTMIGRATED) 
+//
+typedef struct
+{
+    DWORD                   dwSize;         // Size of this structure
+    DVID                    dvidNewHostID;  // DVID of the player who is now the host
+    LPDIRECTPLAYVOICESERVER pdvServerInterface;
+                                            // Pointer to the new host object (if local player is now host)
+} DVMSG_HOSTMIGRATED, *LPDVMSG_HOSTMIGRATED, *PDVMSG_HOSTMIGRATED;
+
+//
+// The current input level / recording volume on the local machine
+// (DVMSGID_INPUTLEVEL)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DWORD   dwPeakLevel;                    // Current peak level of the audio
+    LONG    lRecordVolume;                  // Current recording volume
+    PVOID	pvLocalPlayerContext;           // Context value for the local player
+} DVMSG_INPUTLEVEL, *LPDVMSG_INPUTLEVEL, *PDVMSG_INPUTLEVEL;
+
+//
+// The local client is about to become the new host
+// (DVMSGID_LOCALHOSTSETUP)
+//
+typedef struct
+{
+	DWORD				dwSize;             // Size of this structure
+	PVOID				pvContext;			// Context value to be passed to Initialize() of new host object
+	PDVMESSAGEHANDLER	pMessageHandler;	// Message handler to be used by new host object
+} DVMSG_LOCALHOSTSETUP, *LPDVMSG_LOCALHOSTSETUP, *PDVMSG_LOCALHOSTSETUP;
+
+//
+// The current output level for the combined output of all incoming streams.
+// (DVMSGID_OUTPUTLEVEL)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DWORD   dwPeakLevel;                    // Current peak level of the output
+    LONG    lOutputVolume;                  // Current playback volume
+    PVOID	pvLocalPlayerContext;           // Context value for the local player
+} DVMSG_OUTPUTLEVEL, *LPDVMSG_OUTPUTLEVEL, *PDVMSG_OUTPUTLEVEL;
+
+//
+// The current peak level of an individual player's incoming audio stream as it is
+// being played back.
+// (DVMSGID_PLAYEROUTPUTLEVEL)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DVID    dvidSourcePlayerID;                   // DVID of the player
+    DWORD   dwPeakLevel;                    // Peak level of the player's stream
+    PVOID	pvPlayerContext;                // Context value for the player
+} DVMSG_PLAYEROUTPUTLEVEL, *LPDVMSG_PLAYEROUTPUTLEVEL, *PDVMSG_PLAYEROUTPUTLEVEL;
+
+// 
+// An audio stream from the specified player has started playing back on the local client.
+// (DVMSGID_PLAYERVOICESTART).
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DVID    dvidSourcePlayerID;             // DVID of the Player 
+    PVOID	pvPlayerContext;                // Context value for this player
+} DVMSG_PLAYERVOICESTART, *LPDVMSG_PLAYERVOICESTART, *PDVMSG_PLAYERVOICESTART;
+
+//
+// The audio stream from the specified player has stopped playing back on the local client.
+// (DVMSGID_PLAYERVOICESTOP)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DVID    dvidSourcePlayerID;             // DVID of the player
+    PVOID	pvPlayerContext;                // Context value for this player
+} DVMSG_PLAYERVOICESTOP, *LPDVMSG_PLAYERVOICESTOP, *PDVMSG_PLAYERVOICESTOP;
+
+// 
+// Transmission has started on the local machine
+// (DVMSGID_RECORDSTART)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DWORD   dwPeakLevel;                    // Peak level that caused transmission to start
+    PVOID	pvLocalPlayerContext;           // Context value for the local player
+} DVMSG_RECORDSTART, *LPDVMSG_RECORDSTART, *PDVMSG_RECORDSTART;
+
+// 
+// Transmission has stopped on the local machine
+// (DVMSGID_RECORDSTOP)
+// 
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DWORD   dwPeakLevel;                    // Peak level that caused transmission to stop
+    PVOID	pvLocalPlayerContext;           // Context value for the local player
+} DVMSG_RECORDSTOP, *LPDVMSG_RECORDSTOP, *PDVMSG_RECORDSTOP;
+
+// 
+// The voice session has been lost
+// (DVMSGID_SESSIONLOST)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    HRESULT hrResult;	                    // Reason the session was disconnected
+} DVMSG_SESSIONLOST, *LPDVMSG_SESSIONLOST, *PDVMSG_SESSIONLOST;
+
+//
+// The target list has been updated for the local client
+// (DVMSGID_SETTARGETS)
+//
+typedef struct
+{
+    DWORD   dwSize;                         // Size of this structure
+    DWORD   dwNumTargets;                   // # of targets 
+    PDVID   pdvidTargets;                   // An array of DVIDs specifying the current targets
+} DVMSG_SETTARGETS, *LPDVMSG_SETTARGETS, *PDVMSG_SETTARGETS;
+
+
+/****************************************************************************
+ *
+ * DirectPlayVoice Functions
+ *
+ ****************************************************************************/
+
+extern HRESULT WINAPI DirectPlayVoiceCreate( const GUID * pcIID, void **ppvInterface, IUnknown *pUnknown); 
+
+/****************************************************************************
+ *
+ * DirectPlay8 Application Interfaces
+ *
+ ****************************************************************************/
+
+#undef INTERFACE
+#define INTERFACE IDirectPlayVoiceClient
+DECLARE_INTERFACE_( IDirectPlayVoiceClient, IUnknown )
+{
+    /*** IUnknown methods ***/
+    STDMETHOD(QueryInterface)(THIS_ REFIID riid, PVOID *ppvObj) PURE;
+    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
+    STDMETHOD_(ULONG,Release)(THIS) PURE;
+    /*** IDirectPlayVoiceClient methods ***/
+    STDMETHOD_(HRESULT, Initialize)   (THIS_ LPUNKNOWN, PDVMESSAGEHANDLER, PVOID, PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, Connect)      (THIS_ PDVSOUNDDEVICECONFIG, PDVCLIENTCONFIG, DWORD ) PURE;
+    STDMETHOD_(HRESULT, Disconnect)   (THIS_ DWORD ) PURE;
+    STDMETHOD_(HRESULT, GetSessionDesc)(THIS_ PDVSESSIONDESC ) PURE;
+    STDMETHOD_(HRESULT, GetClientConfig)(THIS_ PDVCLIENTCONFIG ) PURE;
+    STDMETHOD_(HRESULT, SetClientConfig)(THIS_ PDVCLIENTCONFIG ) PURE;
+    STDMETHOD_(HRESULT, GetCaps) 		(THIS_ PDVCAPS ) PURE;
+    STDMETHOD_(HRESULT, GetCompressionTypes)( THIS_ PVOID, PDWORD, PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, SetTransmitTargets)( THIS_ PDVID, DWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, GetTransmitTargets)( THIS_ PDVID, PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, Create3DSoundBuffer)( THIS_ DVID, LPDIRECTSOUNDBUFFER, DWORD, DWORD, LPDIRECTSOUND3DBUFFER * ) PURE;
+    STDMETHOD_(HRESULT, Delete3DSoundBuffer)( THIS_ DVID, LPDIRECTSOUND3DBUFFER * ) PURE;
+    STDMETHOD_(HRESULT, SetNotifyMask)( THIS_ PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, GetSoundDeviceConfig)( THIS_ PDVSOUNDDEVICECONFIG, PDWORD ) PURE;
+};
+
+
+#undef INTERFACE
+#define INTERFACE IDirectPlayVoiceServer
+DECLARE_INTERFACE_( IDirectPlayVoiceServer, IUnknown )
+{
+    /*** IUnknown methods ***/
+    STDMETHOD(QueryInterface)       (THIS_ REFIID riid, LPVOID * ppvObj) PURE;
+    STDMETHOD_(ULONG,AddRef)        (THIS) PURE;
+    STDMETHOD_(ULONG,Release)       (THIS) PURE;
+    /*** IDirectPlayVoiceServer methods ***/
+    STDMETHOD_(HRESULT, Initialize)   (THIS_ LPUNKNOWN, PDVMESSAGEHANDLER, PVOID, LPDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, StartSession)  (THIS_ PDVSESSIONDESC, DWORD ) PURE;
+    STDMETHOD_(HRESULT, StopSession)   (THIS_ DWORD ) PURE;
+    STDMETHOD_(HRESULT, GetSessionDesc)(THIS_ PDVSESSIONDESC ) PURE;
+    STDMETHOD_(HRESULT, SetSessionDesc)(THIS_ PDVSESSIONDESC ) PURE;
+    STDMETHOD_(HRESULT, GetCaps) 		(THIS_ PDVCAPS ) PURE;
+    STDMETHOD_(HRESULT, GetCompressionTypes)( THIS_ PVOID, PDWORD, PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, SetTransmitTargets)( THIS_ DVID, PDVID, DWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, GetTransmitTargets)( THIS_ DVID, PDVID, PDWORD, DWORD ) PURE;
+    STDMETHOD_(HRESULT, SetNotifyMask)( THIS_ PDWORD, DWORD ) PURE;
+};
+
+#undef INTERFACE
+#define INTERFACE IDirectPlayVoiceTest
+DECLARE_INTERFACE_( IDirectPlayVoiceTest, IUnknown )
+{
+    /*** IUnknown methods ***/
+    STDMETHOD(QueryInterface)       (THIS_ REFIID riid, PVOID * ppvObj) PURE;
+    STDMETHOD_(ULONG,AddRef)        (THIS) PURE;
+    STDMETHOD_(ULONG,Release)       (THIS) PURE;
+    /*** IDirectPlayVoiceTest methods ***/
+    STDMETHOD_(HRESULT, CheckAudioSetup) (THIS_ const GUID *,  const GUID * , HWND, DWORD ) PURE;
+};
+
+#if !defined(__cplusplus) || defined(CINTERFACE)
+
+#define IDirectPlayVoiceClient_QueryInterface(p,a,b)        (p)->lpVtbl->QueryInterface(p,a,b)
+#define IDirectPlayVoiceClient_AddRef(p)                    (p)->lpVtbl->AddRef(p)
+#define IDirectPlayVoiceClient_Release(p)                   (p)->lpVtbl->Release(p)
+
+#define IDirectPlayVoiceClient_Initialize(p,a,b,c,d,e)      (p)->lpVtbl->Initialize(p,a,b,c,d,e)
+#define IDirectPlayVoiceClient_Connect(p,a,b,c)             (p)->lpVtbl->Connect(p,a,b,c)
+#define IDirectPlayVoiceClient_Disconnect(p,a)              (p)->lpVtbl->Disconnect(p,a)
+#define IDirectPlayVoiceClient_GetSessionDesc(p,a)          (p)->lpVtbl->GetSessionDesc(p,a)
+#define IDirectPlayVoiceClient_GetClientConfig(p,a)         (p)->lpVtbl->GetClientConfig(p,a)
+#define IDirectPlayVoiceClient_SetClientConfig(p,a)         (p)->lpVtbl->SetClientConfig(p,a)
+#define IDirectPlayVoiceClient_GetCaps(p,a)                 (p)->lpVtbl->GetCaps(p,a)
+#define IDirectPlayVoiceClient_GetCompressionTypes(p,a,b,c,d) (p)->lpVtbl->GetCompressionTypes(p,a,b,c,d)
+#define IDirectPlayVoiceClient_SetTransmitTargets(p,a,b,c)  (p)->lpVtbl->SetTransmitTargets(p,a,b,c)
+#define IDirectPlayVoiceClient_GetTransmitTargets(p,a,b,c)  (p)->lpVtbl->GetTransmitTargets(p,a,b,c)
+#define IDirectPlayVoiceClient_Create3DSoundBuffer(p,a,b,c,d,e)   (p)->lpVtbl->Create3DSoundBuffer(p,a,b,c,d,e)
+#define IDirectPlayVoiceClient_Delete3DSoundBuffer(p,a,b)   (p)->lpVtbl->Delete3DSoundBuffer(p,a,b)
+#define IDirectPlayVoiceClient_SetNotifyMask(p,a,b)         (p)->lpVtbl->SetNotifyMask(p,a,b)
+#define IDirectPlayVoiceClient_GetSoundDeviceConfig(p,a,b)  (p)->lpVtbl->GetSoundDeviceConfig(p,a,b)
+
+#define IDirectPlayVoiceServer_QueryInterface(p,a,b)        (p)->lpVtbl->QueryInterface(p,a,b)
+#define IDirectPlayVoiceServer_AddRef(p)                    (p)->lpVtbl->AddRef(p)
+#define IDirectPlayVoiceServer_Release(p)                   (p)->lpVtbl->Release(p)
+
+#define IDirectPlayVoiceServer_Initialize(p,a,b,c,d,e)      (p)->lpVtbl->Initialize(p,a,b,c,d,e)
+#define IDirectPlayVoiceServer_StartSession(p,a,b)          (p)->lpVtbl->StartSession(p,a,b)
+#define IDirectPlayVoiceServer_StopSession(p,a)             (p)->lpVtbl->StopSession(p,a)
+#define IDirectPlayVoiceServer_GetSessionDesc(p,a)          (p)->lpVtbl->GetSessionDesc(p,a)
+#define IDirectPlayVoiceServer_SetSessionDesc(p,a)          (p)->lpVtbl->SetSessionDesc(p,a)
+#define IDirectPlayVoiceServer_GetCaps(p,a)                 (p)->lpVtbl->GetCaps(p,a)
+#define IDirectPlayVoiceServer_GetCompressionTypes(p,a,b,c,d) (p)->lpVtbl->GetCompressionTypes(p,a,b,c,d)
+#define IDirectPlayVoiceServer_SetTransmitTargets(p,a,b,c,d)	(p)->lpVtbl->SetTransmitTargets(p,a,b,c,d)
+#define IDirectPlayVoiceServer_GetTransmitTargets(p,a,b,c,d)	(p)->lpVtbl->GetTransmitTargets(p,a,b,c,d)
+#define IDirectPlayVoiceServer_SetNotifyMask(p,a,b)         (p)->lpVtbl->SetNotifyMask(p,a,b)
+#define IDirectPlayVoiceTest_QueryInterface(p,a,b)          (p)->lpVtbl->QueryInterface(p,a,b)
+#define IDirectPlayVoiceTest_AddRef(p)                      (p)->lpVtbl->AddRef(p)
+#define IDirectPlayVoiceTest_Release(p)                	    (p)->lpVtbl->Release(p)
+#define IDirectPlayVoiceTest_CheckAudioSetup(p,a,b,c,d)     (p)->lpVtbl->CheckAudioSetup(p,a,b,c,d)
+
+
+#else /* C++ */
+
+#define IDirectPlayVoiceClient_QueryInterface(p,a,b)        (p)->QueryInterface(a,b)
+#define IDirectPlayVoiceClient_AddRef(p)                    (p)->AddRef()
+#define IDirectPlayVoiceClient_Release(p)               	(p)->Release()
+
+#define IDirectPlayVoiceClient_Initialize(p,a,b,c,d,e)      (p)->Initialize(a,b,c,d,e)
+#define IDirectPlayVoiceClient_Connect(p,a,b,c)             (p)->Connect(a,b,c)
+#define IDirectPlayVoiceClient_Disconnect(p,a)              (p)->Disconnect(a)
+#define IDirectPlayVoiceClient_GetSessionDesc(p,a)          (p)->GetSessionDesc(a)
+#define IDirectPlayVoiceClient_GetClientConfig(p,a)         (p)->GetClientConfig(a)
+#define IDirectPlayVoiceClient_SetClientConfig(p,a)         (p)->SetClientConfig(a)
+#define IDirectPlayVoiceClient_GetCaps(p,a)                 (p)->GetCaps(a)
+#define IDirectPlayVoiceClient_GetCompressionTypes(p,a,b,c,d) (p)->GetCompressionTypes(a,b,c,d)
+#define IDirectPlayVoiceClient_SetTransmitTargets(p,a,b,c)  (p)->SetTransmitTargets(a,b,c)
+#define IDirectPlayVoiceClient_GetTransmitTargets(p,a,b,c)  (p)->GetTransmitTargets(a,b,c)
+#define IDirectPlayVoiceClient_Create3DSoundBuffer(p,a,b,c,d,e)   (p)->Create3DSoundBuffer(a,b,c,d,e)
+#define IDirectPlayVoiceClient_Delete3DSoundBuffer(p,a,b)   (p)->Delete3DSoundBuffer(a,b)
+#define IDirectPlayVoiceClient_SetNotifyMask(p,a,b)         (p)->SetNotifyMask(a,b)
+#define IDirectPlayVoiceClient_GetSoundDeviceConfig(p,a,b)    (p)->GetSoundDeviceConfig(a,b)
+
+#define IDirectPlayVoiceServer_QueryInterface(p,a,b)        (p)->QueryInterface(a,b)
+#define IDirectPlayVoiceServer_AddRef(p)                    (p)->AddRef()
+#define IDirectPlayVoiceServer_Release(p)                   (p)->Release()
+
+#define IDirectPlayVoiceServer_Initialize(p,a,b,c,d,e)      (p)->Initialize(a,b,c,d,e)
+#define IDirectPlayVoiceServer_StartSession(p,a,b)          (p)->StartSession(a,b)
+#define IDirectPlayVoiceServer_StopSession(p,a)             (p)->StopSession(a)
+#define IDirectPlayVoiceServer_GetSessionDesc(p,a)            (p)->GetSessionDesc(a)
+#define IDirectPlayVoiceServer_SetSessionDesc(p,a)            (p)->SetSessionDesc(a)
+#define IDirectPlayVoiceServer_GetCaps(p,a)                 (p)->GetCaps(a)
+#define IDirectPlayVoiceServer_GetCompressionTypes(p,a,b,c,d) (p)->GetCompressionTypes(a,b,c,d)
+#define IDirectPlayVoiceServer_SetTransmitTargets(p,a,b,c,d) (p)->SetTransmitTargets(a,b,c,d)
+#define IDirectPlayVoiceServer_GetTransmitTargets(p,a,b,c,d) (p)->GetTransmitTargets(a,b,c,d)
+#define IDirectPlayVoiceServer_SetNotifyMask(p,a,b)         (p)->SetNotifyMask(a,b)
+
+#define IDirectPlayVoiceTest_QueryInterface(p,a,b)          (p)->QueryInterface(a,b)
+#define IDirectPlayVoiceTest_AddRef(p)                      (p)->AddRef()
+#define IDirectPlayVoiceTest_Release(p)                     (p)->Release()
+#define IDirectPlayVoiceTest_CheckAudioSetup(p,a,b,c,d)     (p)->CheckAudioSetup(a,b,c,d)
+
+
+#endif
+
+
+/****************************************************************************
+ *
+ * DIRECTPLAYVOICE ERRORS
+ *
+ * Errors are represented by negative values and cannot be combined.
+ *
+ ****************************************************************************/
+
+#define _FACDPV  0x15
+#define MAKE_DVHRESULT( code )          MAKE_HRESULT( 1, _FACDPV, code )
+
+#define DV_OK                           S_OK
+#define DV_FULLDUPLEX                   MAKE_HRESULT( 0, _FACDPV,  0x0005 )
+#define DV_HALFDUPLEX                   MAKE_HRESULT( 0, _FACDPV,  0x000A )
+#define DV_PENDING						MAKE_HRESULT( 0, _FACDPV,  0x0010 )
+
+#define DVERR_BUFFERTOOSMALL            MAKE_DVHRESULT(  0x001E )
+#define DVERR_EXCEPTION                 MAKE_DVHRESULT(  0x004A )
+#define DVERR_GENERIC                   E_FAIL
+#define DVERR_INVALIDFLAGS              MAKE_DVHRESULT( 0x0078 )
+#define DVERR_INVALIDOBJECT             MAKE_DVHRESULT( 0x0082 )
+#define DVERR_INVALIDPARAM              E_INVALIDARG
+#define DVERR_INVALIDPLAYER             MAKE_DVHRESULT( 0x0087 )
+#define DVERR_INVALIDGROUP              MAKE_DVHRESULT( 0x0091 )
+#define DVERR_INVALIDHANDLE             MAKE_DVHRESULT( 0x0096 )
+#define DVERR_OUTOFMEMORY               E_OUTOFMEMORY
+#define DVERR_PENDING                   DV_PENDING
+#define DVERR_NOTSUPPORTED              E_NOTIMPL
+#define DVERR_NOINTERFACE               E_NOINTERFACE
+#define DVERR_SESSIONLOST               MAKE_DVHRESULT( 0x012C )
+#define DVERR_NOVOICESESSION            MAKE_DVHRESULT( 0x012E )
+#define DVERR_CONNECTIONLOST            MAKE_DVHRESULT( 0x0168 )
+#define DVERR_NOTINITIALIZED            MAKE_DVHRESULT( 0x0169 )
+#define DVERR_CONNECTED                 MAKE_DVHRESULT( 0x016A )
+#define DVERR_NOTCONNECTED              MAKE_DVHRESULT( 0x016B )
+#define DVERR_CONNECTABORTING           MAKE_DVHRESULT( 0x016E )
+#define DVERR_NOTALLOWED                MAKE_DVHRESULT( 0x016F )
+#define DVERR_INVALIDTARGET             MAKE_DVHRESULT( 0x0170 )
+#define DVERR_TRANSPORTNOTHOST          MAKE_DVHRESULT( 0x0171 )
+#define DVERR_COMPRESSIONNOTSUPPORTED   MAKE_DVHRESULT( 0x0172 )
+#define DVERR_ALREADYPENDING            MAKE_DVHRESULT( 0x0173 )
+#define DVERR_SOUNDINITFAILURE          MAKE_DVHRESULT( 0x0174 )
+#define DVERR_TIMEOUT                   MAKE_DVHRESULT( 0x0175 )
+#define DVERR_CONNECTABORTED            MAKE_DVHRESULT( 0x0176 )
+#define DVERR_NO3DSOUND                 MAKE_DVHRESULT( 0x0177 )
+#define DVERR_ALREADYBUFFERED	        MAKE_DVHRESULT( 0x0178 )
+#define DVERR_NOTBUFFERED               MAKE_DVHRESULT( 0x0179 )
+#define DVERR_HOSTING                   MAKE_DVHRESULT( 0x017A )
+#define DVERR_NOTHOSTING                MAKE_DVHRESULT( 0x017B )
+#define DVERR_INVALIDDEVICE             MAKE_DVHRESULT( 0x017C )
+#define DVERR_RECORDSYSTEMERROR         MAKE_DVHRESULT( 0x017D )
+#define DVERR_PLAYBACKSYSTEMERROR       MAKE_DVHRESULT( 0x017E )
+#define DVERR_SENDERROR                 MAKE_DVHRESULT( 0x017F )
+#define DVERR_USERCANCEL                MAKE_DVHRESULT( 0x0180 )
+#define DVERR_RUNSETUP                  MAKE_DVHRESULT( 0x0183 )
+#define DVERR_INCOMPATIBLEVERSION       MAKE_DVHRESULT( 0x0184 )
+#define DVERR_INITIALIZED               MAKE_DVHRESULT( 0x0187 )
+#define DVERR_INVALIDPOINTER            E_POINTER
+#define DVERR_NOTRANSPORT               MAKE_DVHRESULT( 0x0188 )
+#define DVERR_NOCALLBACK                MAKE_DVHRESULT( 0x0189 )
+#define DVERR_TRANSPORTNOTINIT          MAKE_DVHRESULT( 0x018A )
+#define DVERR_TRANSPORTNOSESSION        MAKE_DVHRESULT( 0x018B )
+#define DVERR_TRANSPORTNOPLAYER         MAKE_DVHRESULT( 0x018C )
+#define DVERR_USERBACK                  MAKE_DVHRESULT( 0x018D )
+#define DVERR_NORECVOLAVAILABLE         MAKE_DVHRESULT( 0x018E )
+#define DVERR_INVALIDBUFFER				MAKE_DVHRESULT( 0x018F )
+#define DVERR_LOCKEDBUFFER				MAKE_DVHRESULT( 0x0190 )
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
diff --git a/utils/voice_tweak/dxsdk/dxguid.lib b/utils/voice_tweak/dxsdk/dxguid.lib
new file mode 100644
index 0000000..528f448
--- /dev/null
+++ b/utils/voice_tweak/dxsdk/dxguid.lib
diff --git a/utils/voice_tweak/iwaveout.h b/utils/voice_tweak/iwaveout.h
new file mode 100644
index 0000000..5e9ad4f
--- /dev/null
+++ b/utils/voice_tweak/iwaveout.h
@@ -0,0 +1,33 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef IWAVEOUT_H
+#define IWAVEOUT_H
+#pragma once
+
+
+// Interface by the voice_tweak app for simple wave output. You must extern a 
+// specific factory function to create and initialize an instance.
+class IWaveOut
+{
+public:
+	virtual			~IWaveOut() {}
+	virtual void	Release() = 0;
+
+	// Give it samples to mix into the output. The input samples are 16-bit signed mono.
+	virtual bool	PutSamples(short *pSamples, int nSamples) = 0;
+
+	// Do idle time processing.
+	virtual void	Idle() = 0;
+
+	// Returns the number of samples you've put that haven't been played yet (sitting in the buffer 
+	// waiting to be played).
+	virtual int		GetNumBufferedSamples() = 0;
+};
+
+
+#endif // IWAVEOUT_H
diff --git a/utils/voice_tweak/res/voice_tweak.ico b/utils/voice_tweak/res/voice_tweak.ico
new file mode 100644
index 0000000..90b3b18
--- /dev/null
+++ b/utils/voice_tweak/res/voice_tweak.ico
diff --git a/utils/voice_tweak/res/voice_tweak.rc2 b/utils/voice_tweak/res/voice_tweak.rc2
new file mode 100644
index 0000000..0c61aa6
--- /dev/null
+++ b/utils/voice_tweak/res/voice_tweak.rc2
@@ -0,0 +1,13 @@
+//
+// VOICE_TWEAK.RC2 - resources Microsoft Visual C++ does not edit directly
+//
+
+#ifdef APSTUDIO_INVOKED
+	#error this file is not editable by Microsoft Visual C++
+#endif //APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Add manually edited resources here...
+
+/////////////////////////////////////////////////////////////////////////////
diff --git a/utils/voice_tweak/resource.h b/utils/voice_tweak/resource.h
new file mode 100644
index 0000000..ce3b849
--- /dev/null
+++ b/utils/voice_tweak/resource.h
@@ -0,0 +1,128 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+//{{NO_DEPENDENCIES}}
+// Microsoft Developer Studio generated include file.
+// Used by voice_tweak.rc
+//
+#define IDS_HELPTEXT                    1
+#define IDS_ERROR                       2
+#define IDFURTHERHELP                   3
+#define IDS_CANTFINDMICBOOST            3
+#define IDS_CANTFINDMICVOLUME           4
+#define IDSYSTEMSETUP                   4
+#define IDS_CANTFINDMICMUTE             5
+#define IDS_CANTCREATEWAVEIN            6
+#define IDS_CANTLOADVOICEMODULE         7
+#define IDS_CANTINITCODEC               8
+#define IDS_CANTCREATEWAVEOUT           9
+#define IDS_NODPLAYVOICE                10
+#define IDS_WINDOWTITLE                 11
+#define IDS_OKAY                        12
+#define IDS_CANCEL                      13
+#define IDS_SYSTEMSETUP                 14
+#define IDS_HELP                        15
+#define IDS_VOICEINPUT                  16
+#define IDS_VOLUME                      17
+#define IDS_ENABLEGAIN                  18
+#define IDD_VOICE_TWEAK_DIALOG          102
+#define IDR_MAINFRAME                   128
+#define IDC_INSTRUCTIONTEXT             1000
+#define IDC_VOICEVOLUME                 1001
+#define IDC_VOLUMESLIDER                1003
+#define IDC_HARDWAREGAIN                1004
+#define IDC_VOICEINPUTFRAME             1005
+#define IDC_VOLUMELABEL                 1006
+
+#define IDS_SPANISH_HELPTEXT			201
+#define IDS_SPANISH_ERROR              	202
+#define IDS_SPANISH_CANTFINDMICBOOST   	203
+#define IDS_SPANISH_CANTFINDMICVOLUME  	204
+#define IDS_SPANISH_CANTFINDMICMUTE    	205
+#define IDS_SPANISH_CANTCREATEWAVEIN   	206
+#define IDS_SPANISH_CANTLOADVOICEMODULE	207
+#define IDS_SPANISH_CANTINITCODEC      	208
+#define IDS_SPANISH_CANTCREATEWAVEOUT  	209
+#define IDS_SPANISH_NODPLAYVOICE       	210
+#define IDS_SPANISH_WINDOWTITLE        	211
+#define IDS_SPANISH_OKAY               	212
+#define IDS_SPANISH_CANCEL             	213
+#define IDS_SPANISH_SYSTEMSETUP        	214
+#define IDS_SPANISH_HELP               	215
+#define IDS_SPANISH_VOICEINPUT			216
+#define IDS_SPANISH_VOLUME				217
+#define IDS_SPANISH_ENABLEGAIN			218
+
+#define IDS_FRENCH_HELPTEXT            	300
+#define IDS_FRENCH_ERROR               	301
+#define IDS_FRENCH_CANTFINDMICBOOST    	302
+#define IDS_FRENCH_CANTFINDMICVOLUME   	303
+#define IDS_FRENCH_CANTFINDMICMUTE     	304
+#define IDS_FRENCH_CANTCREATEWAVEIN    	305
+#define IDS_FRENCH_CANTLOADVOICEMODULE 	306
+#define IDS_FRENCH_CANTINITCODEC       	307
+#define IDS_FRENCH_CANTCREATEWAVEOUT   	308
+#define IDS_FRENCH_NODPLAYVOICE        	309
+#define IDS_FRENCH_WINDOWTITLE         	310
+#define IDS_FRENCH_OKAY                	311
+#define IDS_FRENCH_CANCEL              	312
+#define IDS_FRENCH_SYSTEMSETUP         	313
+#define IDS_FRENCH_HELP                	314
+#define IDS_FRENCH_VOICEINPUT          	315
+#define IDS_FRENCH_VOLUME              	316
+#define IDS_FRENCH_ENABLEGAIN          	317
+
+#define IDS_ITALIAN_HELPTEXT            400
+#define IDS_ITALIAN_ERROR               401
+#define IDS_ITALIAN_CANTFINDMICBOOST    402
+#define IDS_ITALIAN_CANTFINDMICVOLUME   403
+#define IDS_ITALIAN_CANTFINDMICMUTE     404
+#define IDS_ITALIAN_CANTCREATEWAVEIN    405
+#define IDS_ITALIAN_CANTLOADVOICEMODULE 406
+#define IDS_ITALIAN_CANTINITCODEC       407
+#define IDS_ITALIAN_CANTCREATEWAVEOUT   408
+#define IDS_ITALIAN_NODPLAYVOICE        409
+#define IDS_ITALIAN_WINDOWTITLE         410
+#define IDS_ITALIAN_OKAY                411
+#define IDS_ITALIAN_CANCEL              412
+#define IDS_ITALIAN_SYSTEMSETUP         413
+#define IDS_ITALIAN_HELP                414
+#define IDS_ITALIAN_VOICEINPUT          415
+#define IDS_ITALIAN_VOLUME              416
+#define IDS_ITALIAN_ENABLEGAIN          417
+
+#define IDS_GERMAN_HELPTEXT           	500
+#define IDS_GERMAN_ERROR              	501
+#define IDS_GERMAN_CANTFINDMICBOOST   	502
+#define IDS_GERMAN_CANTFINDMICVOLUME  	503
+#define IDS_GERMAN_CANTFINDMICMUTE    	504
+#define IDS_GERMAN_CANTCREATEWAVEIN   	505
+#define IDS_GERMAN_CANTLOADVOICEMODULE	506
+#define IDS_GERMAN_CANTINITCODEC      	507
+#define IDS_GERMAN_CANTCREATEWAVEOUT  	508
+#define IDS_GERMAN_NODPLAYVOICE       	509
+#define IDS_GERMAN_WINDOWTITLE        	510
+#define IDS_GERMAN_OKAY               	511
+#define IDS_GERMAN_CANCEL             	512
+#define IDS_GERMAN_SYSTEMSETUP        	513
+#define IDS_GERMAN_HELP               	514
+#define IDS_GERMAN_VOICEINPUT         	515
+#define IDS_GERMAN_VOLUME             	516
+#define IDS_GERMAN_ENABLEGAIN         	517
+
+
+// Next default values for new objects
+// 
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        133
+#define _APS_NEXT_COMMAND_VALUE         32771
+#define _APS_NEXT_CONTROL_VALUE         1007
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif
+
diff --git a/utils/voice_tweak/voice_tweak.cpp b/utils/voice_tweak/voice_tweak.cpp
new file mode 100644
index 0000000..5d27d1f
--- /dev/null
+++ b/utils/voice_tweak/voice_tweak.cpp
@@ -0,0 +1,256 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// voice_tweak.cpp : Defines the class behaviors for the application.
+//
+
+#include "stdafx.h"
+#include <assert.h>
+#include "voice_tweak.h"
+#include "waveout.h"
+#include "voice_tweakDlg.h"
+
+
+#ifdef _DEBUG
+#define new DEBUG_NEW
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+
+//extern IVoiceRecord*	CreateVoiceRecord_WaveIn(int sampleRate);
+extern IVoiceRecord*	CreateVoiceRecord_DSound(int sampleRate);
+
+
+typedef enum
+{
+	LANGUAGE_ENGLISH=0,
+	LANGUAGE_SPANISH=1,
+	LANGUAGE_FRENCH=2,
+	LANGUAGE_ITALIAN=3,
+	LANGUAGE_GERMAN=4,
+	LANGUAGE_COUNT=5
+} VoiceTweakLanguageID;
+
+VoiceTweakLanguageID g_CurrentLanguage = LANGUAGE_ENGLISH;
+
+#define LANGENTRY(name) {IDS_##name##, IDS_SPANISH_##name##, IDS_FRENCH_##name##, IDS_ITALIAN_##name##, IDS_GERMAN_##name##}
+
+int g_StringIDs[][LANGUAGE_COUNT] =
+{
+	LANGENTRY(HELPTEXT),
+	LANGENTRY(ERROR),
+	LANGENTRY(CANTFINDMICBOOST),
+	LANGENTRY(CANTFINDMICVOLUME),
+	LANGENTRY(CANTFINDMICMUTE),
+	LANGENTRY(CANTCREATEWAVEIN),
+	LANGENTRY(CANTLOADVOICEMODULE),
+	LANGENTRY(CANTCREATEWAVEOUT),
+	LANGENTRY(NODPLAYVOICE),
+	LANGENTRY(WINDOWTITLE),
+	LANGENTRY(OKAY),
+	LANGENTRY(CANCEL),
+	LANGENTRY(SYSTEMSETUP),
+	LANGENTRY(HELP),
+	LANGENTRY(VOICEINPUT),
+	LANGENTRY(VOLUME),
+	LANGENTRY(ENABLEGAIN),
+};
+#define NUM_STRINGIDS	(sizeof(g_StringIDs)/sizeof(g_StringIDs[0]))
+
+// Pass in the english string ID, and this returns the string ID in the current language.
+int MapLanguageStringID( int idEnglish )
+{
+	for( int i=0; i < NUM_STRINGIDS; i++ )
+	{
+		if( idEnglish == g_StringIDs[i][LANGUAGE_ENGLISH] )
+			return g_StringIDs[i][g_CurrentLanguage];
+	}
+
+	assert( !"MapLanguageStringID: unknown string ID" );
+	return 0;
+}
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakApp
+
+BEGIN_MESSAGE_MAP(CVoiceTweakApp, CWinApp)
+	//{{AFX_MSG_MAP(CVoiceTweakApp)
+		// NOTE - the ClassWizard will add and remove mapping macros here.
+		//    DO NOT EDIT what you see in these blocks of generated code!
+	//}}AFX_MSG
+	ON_COMMAND(ID_HELP, CWinApp::OnHelp)
+END_MESSAGE_MAP()
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakApp construction
+
+CVoiceTweakApp::CVoiceTweakApp()
+{
+	m_pVoiceRecord = 0;
+	m_pWaveOut = 0;
+	m_pMixerControls = 0;
+}
+
+CVoiceTweakApp::~CVoiceTweakApp()
+{
+	StopDevices();
+}
+
+
+bool CVoiceTweakApp::StartDevices()
+{
+	StopDevices();
+
+	CString str, errStr;
+
+	// Setup wave in.
+	if( !(m_pVoiceRecord = CreateVoiceRecord_DSound(VOICE_TWEAK_SAMPLE_RATE)) )
+	{
+		//if( !(m_pVoiceRecord = CreateVoiceRecord_WaveIn(VOICE_TWEAK_SAMPLE_RATE)) )
+		{
+			str.LoadString( MapLanguageStringID(IDS_CANTCREATEWAVEIN) );
+			::MessageBox(NULL, str, errStr, MB_OK);
+			return false;
+		}
+	}
+
+
+	m_pVoiceRecord->RecordStart();
+
+
+	if( !(m_pWaveOut = CreateWaveOut(VOICE_TWEAK_SAMPLE_RATE)) )
+	{
+		str.LoadString( MapLanguageStringID(IDS_CANTCREATEWAVEOUT) );
+		::MessageBox(NULL, str, errStr, MB_OK);
+		return false;
+	}
+
+	return true;
+}
+
+
+void CVoiceTweakApp::StopDevices()
+{
+	if(m_pVoiceRecord)
+	{
+		m_pVoiceRecord->Release();
+		m_pVoiceRecord = NULL;
+	}
+
+	if(m_pWaveOut)
+	{
+		m_pWaveOut->Release();
+		m_pWaveOut = NULL;
+	}
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// The one and only CVoiceTweakApp object
+
+CVoiceTweakApp theApp;
+
+char const* FindArg(char const *pName)
+{
+	for(int i=0; i < __argc; i++)
+		if(stricmp(__argv[i], pName) == 0)
+			return ((i+1) < __argc) ? __argv[i+1] : "";
+
+	return NULL;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakApp initialization
+BOOL CVoiceTweakApp::InitInstance()
+{
+	// Set the thread locale so it grabs the string resources for the right language. If 
+	// we don't have resources for the system default language, it just uses English.
+	if( FindArg("-french") )
+		g_CurrentLanguage = LANGUAGE_FRENCH;
+	else if( FindArg("-spanish") )
+		g_CurrentLanguage = LANGUAGE_SPANISH;
+	else if(FindArg("-italian"))
+		g_CurrentLanguage = LANGUAGE_ITALIAN;
+	else if(FindArg("-german"))
+		g_CurrentLanguage = LANGUAGE_GERMAN;
+	else
+		g_CurrentLanguage = LANGUAGE_ENGLISH;
+	
+	CString errStr, str;
+	errStr.LoadString( MapLanguageStringID(IDS_ERROR) );
+
+	m_pMixerControls = GetMixerControls(); 
+
+	// Initialize the mixer controls.
+	bool bFoundVolume, bFoundMute;	
+
+	float volume, mute;
+	bFoundVolume = m_pMixerControls->GetValue_Float(IMixerControls::Control::MicVolume, volume);
+	bFoundMute   = m_pMixerControls->GetValue_Float(IMixerControls::Control::MicMute, mute);
+
+	if(!bFoundVolume)
+	{
+		str.LoadString( MapLanguageStringID(IDS_CANTFINDMICVOLUME) );
+		::MessageBox(NULL, str, errStr, MB_OK);
+		return FALSE;
+	}
+
+	if(!bFoundMute)
+	{
+		str.LoadString( MapLanguageStringID(IDS_CANTFINDMICMUTE) );
+		::MessageBox(NULL, str, errStr, MB_OK);
+		return FALSE;
+	}
+
+	// Set mute and boost for them automatically.
+	m_pMixerControls->SetValue_Float(IMixerControls::Control::MicMute, 1);	
+
+	// We cycle the mic boost because for some reason Windows misses the first call to set it to 1, but
+	// if the user clicks the checkbox on and off again, it works.
+	m_pMixerControls->SetValue_Float(IMixerControls::Control::MicBoost, 1);	
+	m_pMixerControls->SetValue_Float(IMixerControls::Control::MicBoost, 0);	
+	m_pMixerControls->SetValue_Float(IMixerControls::Control::MicBoost, 1);	
+
+	// Enable the mic for wave input.
+	m_pMixerControls->SelectMicrophoneForWaveInput();
+
+	if(!StartDevices())
+		return false;
+
+
+	// Standard initialization
+	// If you are not using these features and wish to reduce the size
+	//  of your final executable, you should remove from the following
+	//  the specific initialization routines you do not need.
+
+#ifdef _AFXDLL
+	Enable3dControls();			// Call this when using MFC in a shared DLL
+#else
+	Enable3dControlsStatic();	// Call this when linking to MFC statically
+#endif
+
+	CVoiceTweakDlg dlg;
+	m_pMainWnd = &dlg;
+	int nResponse = dlg.DoModal();
+	if (nResponse == IDOK)
+	{
+		// TODO: Place code here to handle when the dialog is
+		//  dismissed with OK
+	}
+	else if (nResponse == IDCANCEL)
+	{
+		// TODO: Place code here to handle when the dialog is
+		//  dismissed with Cancel
+	}
+
+	// Since the dialog has been closed, return FALSE so that we exit the
+	//  application, rather than start the application's message pump.
+	return FALSE;
+}
diff --git a/utils/voice_tweak/voice_tweak.h b/utils/voice_tweak/voice_tweak.h
new file mode 100644
index 0000000..bd1767a
--- /dev/null
+++ b/utils/voice_tweak/voice_tweak.h
@@ -0,0 +1,82 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// voice_tweak.h : main header file for the VOICE_TWEAK application
+//
+
+#if !defined(AFX_VOICE_TWEAK_H__7343765B_B2E9_4E37_AA34_242E0B635AF1__INCLUDED_)
+#define AFX_VOICE_TWEAK_H__7343765B_B2E9_4E37_AA34_242E0B635AF1__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#ifndef __AFXWIN_H__
+	#error include 'stdafx.h' before including this file for PCH
+#endif
+
+#include "resource.h"		// main symbols
+#include "voice_mixer_controls.h"
+#include "ivoicerecord.h"
+#include "iwaveout.h"
+#include "ivoicecodec.h"
+#include "interface.h"
+#include "voice_gain.h"
+
+
+#define VOICE_TWEAK_SAMPLE_RATE	22050
+
+
+// Pass in the english string ID, and this returns the string ID in the current language.
+int MapLanguageStringID( int idEnglish );
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakApp:
+// See voice_tweak.cpp for the implementation of this class
+//
+
+class CVoiceTweakApp : public CWinApp
+{
+public:
+	CVoiceTweakApp();
+	~CVoiceTweakApp();
+
+// Overrides
+	// ClassWizard generated virtual function overrides
+	//{{AFX_VIRTUAL(CVoiceTweakApp)
+	public:
+	virtual BOOL InitInstance();
+	//}}AFX_VIRTUAL
+
+	// Init and deinit the record, waveOut, and voice codec.
+	bool				StartDevices();
+	void				StopDevices();
+
+	IVoiceRecord		*m_pVoiceRecord;
+	IWaveOut			*m_pWaveOut;
+
+	IMixerControls		*m_pMixerControls;
+
+
+// Implementation
+
+	//{{AFX_MSG(CVoiceTweakApp)
+		// NOTE - the ClassWizard will add and remove member functions here.
+		//    DO NOT EDIT what you see in these blocks of generated code !
+	//}}AFX_MSG
+	DECLARE_MESSAGE_MAP()
+};
+
+
+/////////////////////////////////////////////////////////////////////////////
+
+//{{AFX_INSERT_LOCATION}}
+// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
+
+#endif // !defined(AFX_VOICE_TWEAK_H__7343765B_B2E9_4E37_AA34_242E0B635AF1__INCLUDED_)
diff --git a/utils/voice_tweak/voice_tweak.rc b/utils/voice_tweak/voice_tweak.rc
new file mode 100644
index 0000000..422aff3
--- /dev/null
+++ b/utils/voice_tweak/voice_tweak.rc
@@ -0,0 +1,353 @@
+//Microsoft Developer Studio generated resource script.
+//
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "afxres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (U.S.) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+#ifdef _WIN32
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+#pragma code_page(1252)
+#endif //_WIN32
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "#include ""afxres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "#define _AFX_NO_SPLITTER_RESOURCES\r\n"
+    "#define _AFX_NO_OLE_RESOURCES\r\n"
+    "#define _AFX_NO_TRACKER_RESOURCES\r\n"
+    "#define _AFX_NO_PROPERTY_RESOURCES\r\n"
+    "\r\n"
+    "#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)\r\n"
+    "#ifdef _WIN32\r\n"
+    "LANGUAGE 9, 1\r\n"
+    "#pragma code_page(1252)\r\n"
+    "#endif //_WIN32\r\n"
+    "#include ""res\\voice_tweak.rc2""  // non-Microsoft Visual C++ edited resources\r\n"
+    "#include ""afxres.rc""         // Standard components\r\n"
+    "#endif\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDR_MAINFRAME           ICON    DISCARDABLE     "res\\voice_tweak.ico"
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Dialog
+//
+
+IDD_VOICE_TWEAK_DIALOG DIALOGEX 0, 0, 314, 250
+STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
+EXSTYLE WS_EX_APPWINDOW
+CAPTION "Valve Voice Configuration"
+FONT 8, "MS Sans Serif", 0, 0, 0x1
+BEGIN
+    CONTROL         "Slider1",IDC_VOLUMESLIDER,"msctls_trackbar32",TBS_VERT | 
+                    TBS_BOTH | TBS_NOTICKS | WS_TABSTOP,54,36,16,156
+    CONTROL         "Enable +20dB hardware gain (leave checked if unsure)",
+                    IDC_HARDWAREGAIN,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,
+                    212,300,10
+    DEFPUSHBUTTON   "OK",IDOK,7,229,96,14
+    PUSHBUTTON      "Cancel",IDCANCEL,108,229,96,14
+    PUSHBUTTON      "System Setup",IDSYSTEMSETUP,211,229,96,14
+    EDITTEXT        IDC_INSTRUCTIONTEXT,91,7,216,197,ES_MULTILINE | 
+                    ES_READONLY | WS_VSCROLL | NOT WS_TABSTOP
+    GROUPBOX        "Voice Input",IDC_VOICEINPUTFRAME,7,7,75,197
+    CONTROL         "Progress1",IDC_VOICEVOLUME,"msctls_progress32",
+                    PBS_VERTICAL | WS_BORDER,19,28,11,160
+    LTEXT           "Volume:",IDC_VOLUMELABEL,49,25,26,8
+END
+
+
+#ifndef _MAC
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION 1,0,0,1
+ PRODUCTVERSION 1,0,0,1
+ FILEFLAGSMASK 0x3fL
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x4L
+ FILETYPE 0x1L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904B0"
+        BEGIN
+            VALUE "CompanyName", "Valve\0"
+            VALUE "FileDescription", "Voice_Tweak Application\0"
+            VALUE "FileVersion", "1, 0, 0, 1\0"
+            VALUE "InternalName", "Voice_Tweak Application\0"
+            VALUE "LegalCopyright", "Copyright (c) 1996-2003\0"
+            VALUE "LegalTrademarks", "\0"
+            VALUE "OriginalFilename", "voice_tweak.exe\0"
+            VALUE "ProductName", "Voice_Tweak Application\0"
+            VALUE "ProductVersion", "1, 0, 0, 1\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END
+
+#endif    // !_MAC
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DESIGNINFO
+//
+
+#ifdef APSTUDIO_INVOKED
+GUIDELINES DESIGNINFO DISCARDABLE 
+BEGIN
+    IDD_VOICE_TWEAK_DIALOG, DIALOG
+    BEGIN
+        LEFTMARGIN, 7
+        RIGHTMARGIN, 307
+        VERTGUIDE, 28
+        VERTGUIDE, 39
+        VERTGUIDE, 133
+        TOPMARGIN, 7
+        BOTTOMMARGIN, 243
+        HORZGUIDE, 28
+        HORZGUIDE, 188
+        HORZGUIDE, 204
+    END
+END
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// String Table
+//
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_HELPTEXT            "The first step to getting voice working in the Half-Life platform is to make sure your microphone is plugged in.\r\n\r\nPlug your microphone into the microphone jack on your sound card. If you don't know which one is the microphone jack, try each one and speak into the microphone each time. When you've found the right one, you should hear your voice coming out of your PC speakers.\r\n\r\nNext, adjust the distance from the microphone to your mouth and adjust the volume slider until your voice sounds good to you. This is how you will sound to other players in the game.\r\n\r\nIf you are not using headphones for audio output, be sure that your microphone is far enough away from your speakers or else you may get feedback which manifests itself as a loud high-pitched whine.\r\n\r\nIf you are unable to get your microphone working here, try clicking System Setup, which will do more extensive tests to get your microphone working."
+    IDS_ERROR               "Error!"
+    IDS_CANTFINDMICBOOST    "Warning: couldn't find microphone boost control."
+    IDS_CANTFINDMICVOLUME   "Couldn't find mic volume."
+    IDS_CANTFINDMICMUTE     "Couldn't find mic mute."
+    IDS_CANTCREATEWAVEIN    "Can't create a DirectSound or waveIn device."
+    IDS_CANTLOADVOICEMODULE "Can't load voice codec in %1!s!."
+    IDS_CANTINITCODEC       "Can't initialize voice codec in %1!s!."
+    IDS_CANTCREATEWAVEOUT   "Can't initialize waveOut."
+    IDS_NODPLAYVOICE        "Can't initialize DirectPlayVoice setup."
+    IDS_WINDOWTITLE         "Valve Voice Configuration"
+    IDS_OKAY                "Okay"
+    IDS_CANCEL              "Cancel"
+    IDS_SYSTEMSETUP         "System Setup"
+    IDS_HELP                "Help"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_VOICEINPUT          "Voice Input"
+    IDS_VOLUME              "Volume"
+    IDS_ENABLEGAIN          "Enable +20dB hardware gain (leave checked if unsure)"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_SPANISH_HELPTEXT    "El primer paso para que funcione la comunicaci�n vocal en la plataforma de Half-Life es asegurarse de que el micr�fono est� conectado.\r\n\r\nConecta tu micr�fono en la entrada apropiada de la tarjeta de sonido. Si no sabes cu�l es, intenta cada una de ellas y habla por el micr�fono. Cuando hayas encontrado la entrada correcta, oir�s tu voz por los altavoces del PC.\r\n\r\nA continuaci�n ajusta la distancia entre el micr�fono y tu boca y ajusta el control deslizante del volumen hasta que te guste c�mo suena tu voz. As� te oir�n el resto de jugadores durante la partida.\r\n\r\nSi no utilizas auriculares para la salida de audio, aseg�rate de que tu micr�fono est� lo suficientemente lejos de los altavoces o el sonido se emitir� como un silbido fuerte y agudo.\r\n\r\nSi no consigues que tu micr�fono funcione, intenta hacer clic en System Setup (instalaci�n del sistema) para hacer m�s pruebas y solucionar el problema."
+    IDS_SPANISH_ERROR       "�Error!"
+    IDS_SPANISH_CANTFINDMICBOOST 
+                            "Aviso: no se ha podido encontrar el control de graves del micr�fono."
+    IDS_SPANISH_CANTFINDMICVOLUME 
+                            "No se ha podido encontrar el mic volume (volumen de las entradas de mic)."
+    IDS_SPANISH_CANTFINDMICMUTE 
+                            "No se ha podido encontrar mic mute (mic bloqueado)."
+    IDS_SPANISH_CANTCREATEWAVEIN 
+                            "No se puede crear el dispositivo de entrada de sonido (waveIn) (mono a 16 bits y 8 KB)."
+    IDS_SPANISH_CANTLOADVOICEMODULE 
+                            "No se puede cargar el codec vocal en %1!s!."
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_SPANISH_CANTINITCODEC 
+                            "No se puede inicializar el codec vocal en %1!s!."
+    IDS_SPANISH_CANTCREATEWAVEOUT 
+                            "No se puede inicializar el dispositivo de salida de sonido (waveOut)."
+    IDS_SPANISH_NODPLAYVOICE 
+                            "No se puede inicializar la instalaci�n de DirectPlayVoice."
+    IDS_SPANISH_WINDOWTITLE "Configuraci�n del procesador de voz"
+    IDS_SPANISH_OKAY        "Aceptar"
+    IDS_SPANISH_CANCEL      "Cancelar"
+    IDS_SPANISH_SYSTEMSETUP "Instalaci�n del sistema"
+    IDS_SPANISH_HELP        "Ayuda"
+    IDS_SPANISH_VOICEINPUT  "Entrada de voz"
+    IDS_SPANISH_VOLUME      "Volumen"
+    IDS_SPANISH_ENABLEGAIN  "Permitir aumento de m�s de 20dB de hardware (d�jalo marcado si no est�s seguro)"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_FRENCH_HELPTEXT     "Afin d'utiliser les communications vocales dans Half-Life, vous devez tout d'abord v�rifier que votre microphone est correctement branch�.\r\n\r\nBranchez le microphone dans la prise microphone de votre carte son. Si vous ne savez pas quelle prise de la carte son est la prise microphone, essayez toutes les prises libres et testez votre microphone � chaque fois. Lorsque vous avez trouv� la bonne prise, vous devriez entendre votre voix dans les haut-parleurs de votre PC.\r\n\r\nEnsuite, placez le microphone � bonne distance de votre bouche et r�glez les param�tres de volume pour que votre voix ressorte correctement.\r\n\r\nSi vous n'utilisez pas un casque, assurez-vous que le microphone n'est pas plac� trop pr�t des haut-parleurs. Vous risquez sinon d'entendre des bruits parasites, par exemple un effet larsen qui se caract�rise par un sifflement aigu.\r\n\r\nSi vous n'arrivez pas � faire fonctionner votre microphone, essayez de v�rifier depuis Panneau de Configuration/Syst�me que votre carte son et tous les ports correspondants sont correctement install�s."
+    IDS_FRENCH_ERROR        "Erreur !"
+    IDS_FRENCH_CANTFINDMICBOOST 
+                            "Attention : impossible de trouver le contr�le de gain microphone."
+    IDS_FRENCH_CANTFINDMICVOLUME "Impossible de trouver volume microphone."
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_FRENCH_CANTFINDMICMUTE "Impossible de trouver muet microphone."
+    IDS_FRENCH_CANTCREATEWAVEIN 
+                            "Impossible de cr�er un p�riph�rique waveIn (16 bits mono en 8 k)."
+    IDS_FRENCH_CANTLOADVOICEMODULE 
+                            "Impossible de charger le codec voix en %1!s!."
+    IDS_FRENCH_CANTINITCODEC 
+                            "Impossible d'initialiser le codec voix en %1!s!."
+    IDS_FRENCH_CANTCREATEWAVEOUT "Impossible d'initialiser waveOut."
+    IDS_FRENCH_NODPLAYVOICE "Impossible d'initialiser le param�trage de DirectPlayVoice."
+    IDS_FRENCH_WINDOWTITLE  "Configuration Voix Valve"
+    IDS_FRENCH_OKAY         "OK"
+    IDS_FRENCH_CANCEL       "Annuler"
+    IDS_FRENCH_SYSTEMSETUP  "Configuration"
+    IDS_FRENCH_HELP         "Aide"
+    IDS_FRENCH_VOICEINPUT   "Entr�e voix"
+    IDS_FRENCH_VOLUME       "Volume"
+    IDS_FRENCH_ENABLEGAIN   "Activer un gain mat�riel de +20 Db (laissez cocher en cas de doute)"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_ITALIAN_HELPTEXT    "Il primo passo per utilizzare la voce in Half-Life � accertarsi che il microfono sia collegato correttamente.\r\n\r\nInserisci il microfono nell'apposita presa della scheda audio. Se non sai quale sia, provale tutte e procedi per tentativi provando a parlare nel microfono. Quando trovi quella giusta, dovresti sentire la tua voce provenire dagli altoparlanti del PC. \r\n\r\nA questo punto, aggiusta la distanza del microfono dalla bocca e regola il volume in modo che la voce risulti gradevole. Questo livello sar� infatti quello che sentiranno gli altri giocatori. \r\n\r\nSe non stai utilizzando le cuffie per ascoltare l'audio, assicurati che il microfono sia distante dagli altoparlanti. In caso contrario potrebbero manifestarsi dei disturbi legati al rientro dell'audio.\r\n\r\nSe non riesci a utilizzare il microfono, prova ad attivare il setup del sistema in modo che venga effettuato un test che verifichi accuratamente il funzionamento del microfono."
+    IDS_ITALIAN_ERROR       "Errore!"
+    IDS_ITALIAN_CANTFINDMICBOOST 
+                            "Attenzione: impossibile trovare il controllo per incrementare il segnale del microfono."
+    IDS_ITALIAN_CANTFINDMICVOLUME 
+                            "Impossibile trovare il volume del microfono."
+    IDS_ITALIAN_CANTFINDMICMUTE 
+                            "Impossibile trovare il comando mute per il microfono."
+    IDS_ITALIAN_CANTCREATEWAVEIN 
+                            "Impossibile creare un device waveIn (16 Bit-Signed Mono a 8K)"
+    IDS_ITALIAN_CANTLOADVOICEMODULE 
+                            "Impossibile caricare il voice codec in %1!s!."
+    IDS_ITALIAN_CANTINITCODEC 
+                            "Impossibile inizializzare il voice codec in %1!s!."
+    IDS_ITALIAN_CANTCREATEWAVEOUT "Impossibile inizializzare waveOut."
+    IDS_ITALIAN_NODPLAYVOICE 
+                            "Impossibile inizializzare il setup di DirectPlayVoice."
+    IDS_ITALIAN_WINDOWTITLE "Configurazione supporto vocale Valve"
+    IDS_ITALIAN_OKAY        "OK"
+    IDS_ITALIAN_CANCEL      "Annulla"
+    IDS_ITALIAN_SYSTEMSETUP "Impostazioni di sistema"
+    IDS_ITALIAN_HELP        "Aiuto"
+    IDS_ITALIAN_VOICEINPUT  "Input vocale"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_ITALIAN_VOLUME      "Volume"
+    IDS_ITALIAN_ENABLEGAIN  "Attiva l'incremento audio di 20 dB (lascia attivo se non sei sicuro)"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_GERMAN_HELPTEXT     "Der erste Schritt zur Aktivierung des Sprach-Features bei der HALF-LIFE-Plattform besteht darin, sicherzustellen, dass das Mikrofon angeschlossen ist.\r\n\r\nVerbinden Sie das Mikrofon mit der Mikrofonbuchse Ihrer Soundkarte. Wenn Sie nicht wissen, welche die Mikrofonbuchse ist, probieren Sie alle aus und sprechen Sie dabei jedes Mal ins Mikrofon. Wenn Sie die richtige gefunden haben, sollten Sie Ihre Stimme �ber die Lautsprecher Ihres PCs h�ren.\r\n\r\nAls N�chstes stellen Sie die Entfernung zwischen Ihrem Mund und dem Mikrofon ein und regeln die Lautst�rke so, dass Ihre Stimme gut zu verstehen ist. Die anderen Spieler werden Sie im Spiel genau so h�ren.\r\n\r\nWenn Sie f�r die Soundausgabe keinen Kopfh�rer benutzen, achten Sie darauf, dass sich Ihr Mikrofon weit genug von den Lautsprechern entfernt befindet, da Sie anderenfalls eine R�ckkopplung verursachen, die sich als lautes, hohes Pfeifen bemerkbar macht.\r\n\r\nSollte es Ihnen nicht gelingen, das Mikrofon in Betrieb zu nehmen, klicken Sie bitte auf System-Setup, um intensivere Tests durchzuf�hren und das Mikrofon auf diese Weise einzurichten."
+    IDS_GERMAN_ERROR        "Fehler!"
+    IDS_GERMAN_CANTFINDMICBOOST 
+                            "Achtung: Verst�rkersteuerung f�r Mikrofon konnte nicht gefunden werden."
+    IDS_GERMAN_CANTFINDMICVOLUME 
+                            "Mikro-Lautst�rkeregelung konnte nicht gefunden werden."
+    IDS_GERMAN_CANTFINDMICMUTE 
+                            "Mikro-Stummschaltung konnte nicht gefunden werden."
+    IDS_GERMAN_CANTCREATEWAVEIN 
+                            "WaveIn-Ger�t konnte nicht erstellt werden (16-Bit-Mono bei 8 K)."
+    IDS_GERMAN_CANTLOADVOICEMODULE 
+                            "Sprach-Codec konnte nicht in %1!s! geladen werden."
+    IDS_GERMAN_CANTINITCODEC 
+                            "Sprach-Codec konnte nicht in %1!s! initialisiert werden."
+    IDS_GERMAN_CANTCREATEWAVEOUT "WaveOut konnte nicht initialisiert werden."
+    IDS_GERMAN_NODPLAYVOICE "DirectPlayVoice-Setup konnte nicht initialisiert werden."
+    IDS_GERMAN_WINDOWTITLE  "Valve - Sprach-Konfiguration"
+    IDS_GERMAN_OKAY         "OK"
+END
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_GERMAN_CANCEL       "Abbrechen"
+    IDS_GERMAN_SYSTEMSETUP  "System - Setup"
+    IDS_GERMAN_HELP         "Hilfe"
+    IDS_GERMAN_VOICEINPUT   "Spracheingabe"
+    IDS_GERMAN_VOLUME       "Lautst"
+    IDS_GERMAN_ENABLEGAIN   "+20dB Hardware-Gain aktivieren (Markierung belassen, wenn nicht sicher)"
+END
+
+#endif    // English (U.S.) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+#define _AFX_NO_SPLITTER_RESOURCES
+#define _AFX_NO_OLE_RESOURCES
+#define _AFX_NO_TRACKER_RESOURCES
+#define _AFX_NO_PROPERTY_RESOURCES
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+#ifdef _WIN32
+LANGUAGE 9, 1
+#pragma code_page(1252)
+#endif //_WIN32
+#include "res\voice_tweak.rc2"  // non-Microsoft Visual C++ edited resources
+#include "afxres.rc"         // Standard components
+#endif
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED
+
diff --git a/utils/voice_tweak/voice_tweak.vcproj b/utils/voice_tweak/voice_tweak.vcproj
new file mode 100644
index 0000000..b2e91b1
--- /dev/null
+++ b/utils/voice_tweak/voice_tweak.vcproj
@@ -0,0 +1,302 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.10"
+	Name="voice_tweak"
+	ProjectGUID="{C570FFDC-AEFA-45BD-B3F4-44722478DE4F}"
+	SccProjectName=""
+	SccAuxPath=""
+	SccLocalPath=""
+	SccProvider=""
+	Keyword="MFCProj">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="1"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="..\..\public,..\..\public\tier1,..\..\engine,..\..\common,.\dxsdk,..\..\engine\audio\private,..\..\engine\audio\public"
+				PreprocessorDefinitions="_DEBUG;WIN32;_WINDOWS;VOICE_TWEAK_APP"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="1"
+				UsePrecompiledHeader="3"
+				PrecompiledHeaderThrough="stdafx.h"
+				PrecompiledHeaderFile=".\Debug/voice_tweak.pch"
+				AssemblerListingLocation=".\Debug/"
+				ObjectFile=".\Debug/"
+				ProgramDataBaseFileName=".\Debug/"
+				WarningLevel="4"
+				SuppressStartupBanner="TRUE"
+				DebugInformationFormat="4"
+				CompileAs="0"/>
+			<Tool
+				Name="VCCustomBuildTool"
+				CommandLine="if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin
+"
+				Outputs="..\..\..\game\bin\$(TargetName).exe"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="nafxcwd.lib libcmtd.lib dxsdk\dxguid.lib winmm.lib dxguid.lib"
+				OutputFile=".\Debug/voice_tweak.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				IgnoreDefaultLibraryNames="libcmtd.lib,nafxcwd.lib"
+				GenerateDebugInformation="TRUE"
+				ProgramDatabaseFile=".\Debug/voice_tweak.pdb"
+				SubSystem="2"
+				TargetMachine="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="_DEBUG"
+				MkTypLibCompatible="TRUE"
+				SuppressStartupBanner="TRUE"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Debug/voice_tweak.tlb"
+				HeaderFileName=""/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="1"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				InlineFunctionExpansion="1"
+				AdditionalIncludeDirectories="..\..\public,..\..\public\tier1,..\..\engine,..\..\common,.\dxsdk,..\..\engine\audio\private,..\..\engine\audio\public"
+				PreprocessorDefinitions="NDEBUG;WIN32;_WINDOWS;VOICE_TWEAK_APP"
+				StringPooling="TRUE"
+				RuntimeLibrary="0"
+				EnableFunctionLevelLinking="TRUE"
+				UsePrecompiledHeader="3"
+				PrecompiledHeaderThrough="stdafx.h"
+				PrecompiledHeaderFile=".\Release/voice_tweak.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
+				WarningLevel="4"
+				SuppressStartupBanner="TRUE"
+				CompileAs="0"/>
+			<Tool
+				Name="VCCustomBuildTool"
+				CommandLine="if exist ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe attrib -r ..\..\..\game\bin\&quot;$(TargetName)&quot;.exe
+copy &quot;$(TargetPath)&quot; ..\..\..\game\bin
+"
+				Outputs="..\..\..\game\bin\$(TargetName).exe"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="nafxcw.lib libcmt.lib dxsdk\dxguid.lib winmm.lib dxguid.lib"
+				OutputFile=".\Release/voice_tweak.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				IgnoreDefaultLibraryNames="libcmt.lib,nafxcw.lib"
+				ProgramDatabaseFile=".\Release/voice_tweak.pdb"
+				SubSystem="2"
+				TargetMachine="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				PreprocessorDefinitions="NDEBUG"
+				MkTypLibCompatible="TRUE"
+				SuppressStartupBanner="TRUE"
+				TargetEnvironment="1"
+				TypeLibraryName=".\Release/voice_tweak.tlb"
+				HeaderFileName=""/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+			<Tool
+				Name="VCManagedWrapperGeneratorTool"/>
+			<Tool
+				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath="..\..\engine\audio\private\circularbuffer.cpp">
+			</File>
+			<File
+				RelativePath="..\..\public\tier0\memoverride.cpp">
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="StdAfx.cpp">
+				<FileConfiguration
+					Name="Debug|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="1"/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32">
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="1"/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\engine\audio\private\voice_gain.cpp">
+			</File>
+			<File
+				RelativePath="..\..\engine\audio\private\voice_mixer_controls.cpp">
+			</File>
+			<File
+				RelativePath="..\..\engine\audio\private\voice_record_dsound.cpp">
+			</File>
+			<File
+				RelativePath="voice_tweak.cpp">
+			</File>
+			<File
+				RelativePath="voice_tweak.rc">
+			</File>
+			<File
+				RelativePath="voice_tweakDlg.cpp">
+			</File>
+			<File
+				RelativePath="..\..\engine\audio\private\voice_wavefile.cpp">
+			</File>
+			<File
+				RelativePath="waveout.cpp">
+			</File>
+			<File
+				RelativePath="win_idle.cpp">
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl">
+			<File
+				RelativePath="iwaveout.h">
+			</File>
+			<File
+				RelativePath="Resource.h">
+			</File>
+			<File
+				RelativePath="voice_tweak.h">
+			</File>
+			<File
+				RelativePath="voice_tweakDlg.h">
+			</File>
+			<File
+				RelativePath="waveout.h">
+			</File>
+			<File
+				RelativePath="win_idle.h">
+			</File>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">
+			<File
+				RelativePath="res\voice_tweak.ico">
+			</File>
+			<File
+				RelativePath="res\voice_tweak.rc2">
+			</File>
+		</Filter>
+		<File
+			RelativePath="ReadMe.txt">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier0.lib">
+			<FileConfiguration
+				Name="Debug|Win32">
+				<Tool
+					Name="VCCustomBuildTool"
+					Description=""
+					CommandLine=""/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Release|Win32">
+				<Tool
+					Name="VCCustomBuildTool"
+					Description=""
+					CommandLine=""/>
+			</FileConfiguration>
+		</File>
+		<File
+			RelativePath="..\..\lib\public\tier1.lib">
+		</File>
+		<File
+			RelativePath="..\..\lib\public\vstdlib.lib">
+			<FileConfiguration
+				Name="Debug|Win32">
+				<Tool
+					Name="VCCustomBuildTool"
+					Description=""
+					CommandLine=""/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Release|Win32">
+				<Tool
+					Name="VCCustomBuildTool"
+					Description=""
+					CommandLine=""/>
+			</FileConfiguration>
+		</File>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/utils/voice_tweak/voice_tweakDlg.cpp b/utils/voice_tweak/voice_tweakDlg.cpp
new file mode 100644
index 0000000..502db48
--- /dev/null
+++ b/utils/voice_tweak/voice_tweakDlg.cpp
@@ -0,0 +1,408 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// voice_tweakDlg.cpp : implementation file
+//
+
+#include "stdafx.h"
+#include "voice_tweak.h"
+#include "voice_tweakDlg.h"
+#include "voice_gain.h"
+#include "dvoice.h"
+
+
+void TermDPlayVoice( HINSTANCE &hInst, IDirectPlayVoiceTest* &pVoice )
+{
+	if( pVoice )
+	{
+		pVoice->Release();
+		pVoice = NULL;
+	}
+
+	if( hInst )
+	{
+		FreeLibrary( hInst );
+		hInst = NULL;
+	}
+}
+
+
+bool InitDPlayVoice( HINSTANCE &hInst, IDirectPlayVoiceTest* &pVoice )
+{
+	typedef HRESULT (WINAPI *DirectPlayVoiceCreateFn)(
+	  GUID* pcIID, 
+	  void** ppvInterface, 
+	  IUnknown* pUnknown
+	);
+
+	hInst = NULL;
+	pVoice = NULL;
+
+	hInst = LoadLibrary( "dpvoice.dll" );
+	if(hInst)
+	{
+		DirectPlayVoiceCreateFn fn = (DirectPlayVoiceCreateFn)GetProcAddress(hInst, "DirectPlayVoiceCreate");
+		if(fn)
+		{			
+			HRESULT hr = fn((GUID*)&IID_IDirectPlayVoiceTest, (void**)&pVoice, NULL);
+			if( SUCCEEDED( hr ) )
+				return true;
+		}
+	}
+
+	TermDPlayVoice( hInst, pVoice );
+	return false;
+}
+
+
+bool IsDPlayVoiceAvailable()
+{
+	HINSTANCE hInst;
+	IDirectPlayVoiceTest *pVoice;
+
+	bool bRet = InitDPlayVoice( hInst, pVoice );
+	TermDPlayVoice( hInst, pVoice );
+
+	return bRet;
+}
+
+
+#ifdef _DEBUG
+#define new DEBUG_NEW
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+
+#define VOLUMESLIDER_RANGE	1000
+
+
+CVoiceTweakApp*	TweakApp()	{return (CVoiceTweakApp*)AfxGetApp();}
+
+
+extern "C" 
+{
+	void Con_DPrintf (char *fmt, ...);
+	void Con_Printf (char *fmt, ...);
+}
+
+
+void PrintToTraceWindow(const char *fmt, va_list marker)
+{
+	char msg[2048];
+	_vsnprintf(msg, sizeof(msg), fmt, marker);
+	OutputDebugString(msg);
+}
+
+void Con_DPrintf (char *fmt, ...)
+{
+	va_list marker;
+	va_start(marker, fmt);
+	PrintToTraceWindow(fmt, marker);
+	va_end(marker);
+}
+
+void Con_Printf (char *fmt, ...)
+{
+	va_list marker;
+	va_start(marker, fmt);
+	PrintToTraceWindow(fmt, marker);
+	va_end(marker);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakDlg dialog
+
+CVoiceTweakDlg::CVoiceTweakDlg(CWnd* pParent /*=NULL*/)
+	: CDialog(CVoiceTweakDlg::IDD, pParent)
+{
+	//{{AFX_DATA_INIT(CVoiceTweakDlg)
+	//}}AFX_DATA_INIT
+	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
+	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
+}
+
+CVoiceTweakDlg::~CVoiceTweakDlg()
+{
+	Term();
+}
+
+void CVoiceTweakDlg::Term()
+{
+	m_WinIdle.EndIdle();
+}
+
+
+void CVoiceTweakDlg::DoDataExchange(CDataExchange* pDX)
+{
+	CDialog::DoDataExchange(pDX);
+	//{{AFX_DATA_MAP(CVoiceTweakDlg)
+	DDX_Control(pDX, IDC_HARDWAREGAIN, m_HardwareGain);
+	DDX_Control(pDX, IDC_VOICEVOLUME, m_VoiceVolume);
+	DDX_Control(pDX, IDC_VOLUMESLIDER, m_VolumeSlider);
+	DDX_Control(pDX, IDC_INSTRUCTIONTEXT, m_InstructionText);
+	//}}AFX_DATA_MAP
+}
+
+BEGIN_MESSAGE_MAP(CVoiceTweakDlg, CDialog)
+	//{{AFX_MSG_MAP(CVoiceTweakDlg)
+	ON_WM_PAINT()
+	ON_WM_QUERYDRAGICON()
+	ON_MESSAGE(WM_TWEAKIDLE, OnIdle)
+	ON_WM_DESTROY()
+	ON_BN_CLICKED(IDC_HARDWAREGAIN, OnHardwareGain)
+	ON_BN_CLICKED(IDFURTHERHELP, OnFurtherhelp)
+	ON_BN_CLICKED(IDSYSTEMSETUP, OnSystemSetup)
+	//}}AFX_MSG_MAP
+END_MESSAGE_MAP()
+
+
+IMixerControls* GetAppMixerControls()
+{
+	return ((CVoiceTweakApp*)AfxGetApp())->m_pMixerControls;
+}
+
+
+void CVoiceTweakDlg::SetString(int childControl, int stringID)
+{
+	if(CWnd *pWnd = GetDlgItem(childControl))
+	{
+		CString str;
+		str.LoadString(stringID);
+		pWnd->SetWindowText(str);
+	}
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakDlg message handlers
+
+BOOL CVoiceTweakDlg::OnInitDialog()
+{
+	CDialog::OnInitDialog();
+
+	// Set the icon for this dialog.  The framework does this automatically
+	//  when the application's main window is not a dialog
+	SetIcon(m_hIcon, TRUE);			// Set big icon
+	SetIcon(m_hIcon, FALSE);		// Set small icon
+	
+	CString str;
+	str.LoadString( MapLanguageStringID(IDS_HELPTEXT) );
+	m_InstructionText.SetWindowText(str);
+
+
+	// Save off their old settings so we can restore if they hit cancel.
+	GetAppMixerControls()->GetValue_Float(IMixerControls::Control::MicVolume, m_OldVolume);
+
+	float bBoostOn;
+	if(GetAppMixerControls()->GetValue_Float(IMixerControls::Control::MicBoost, bBoostOn))
+	{
+		m_HardwareGain.SetCheck((int)bBoostOn);
+	}
+	else
+	{
+		m_HardwareGain.ShowWindow(SW_HIDE);
+	}
+
+	// Initialize the volume control.
+	m_VolumeSlider.SetRange(0, 1000);
+	m_VolumeSlider.SetPos((int)(VOLUMESLIDER_RANGE - m_OldVolume * VOLUMESLIDER_RANGE));
+
+	m_VoiceVolume.SetRange32(0, (1 << (BYTES_PER_SAMPLE*8-1)) - 1);
+
+	// Get idle messages...
+	m_WinIdle.StartIdle(GetSafeHwnd(), WM_TWEAKIDLE, 0,0, 10);
+	m_WinIdle.NextIdle();
+
+	// Set all the dialog item strings for localization.
+	SetString(IDOK, MapLanguageStringID(IDS_OKAY));
+	SetString(IDCANCEL, MapLanguageStringID(IDS_CANCEL));
+	SetString(IDC_VOICEINPUTFRAME, MapLanguageStringID(IDS_VOICEINPUT));
+	SetString(IDC_VOLUMELABEL, MapLanguageStringID(IDS_VOLUME));
+	SetString(IDC_HARDWAREGAIN, MapLanguageStringID(IDS_ENABLEGAIN));
+	SetString(IDSYSTEMSETUP, MapLanguageStringID(IDS_SYSTEMSETUP));
+	SetString(IDFURTHERHELP, MapLanguageStringID(IDS_HELP));
+	
+	CString titleStr;
+	titleStr.LoadString( MapLanguageStringID(IDS_WINDOWTITLE) );
+	SetWindowText(titleStr);
+
+	if( !IsDPlayVoiceAvailable() )
+	{
+		CWnd *pWnd = GetDlgItem( IDSYSTEMSETUP );
+		if( pWnd )
+			pWnd->EnableWindow( false );
+	}
+	
+	return TRUE;  // return TRUE  unless you set the focus to a control
+}
+
+// If you add a minimize button to your dialog, you will need the code below
+//  to draw the icon.  For MFC applications using the document/view model,
+//  this is automatically done for you by the framework.
+
+void CVoiceTweakDlg::OnPaint() 
+{
+	if (IsIconic())
+	{
+		CPaintDC dc(this); // device context for painting
+
+		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
+
+		// Center icon in client rectangle
+		int cxIcon = GetSystemMetrics(SM_CXICON);
+		int cyIcon = GetSystemMetrics(SM_CYICON);
+		CRect rect;
+		GetClientRect(&rect);
+		int x = (rect.Width() - cxIcon + 1) / 2;
+		int y = (rect.Height() - cyIcon + 1) / 2;
+
+		// Draw the icon
+		dc.DrawIcon(x, y, m_hIcon);
+	}
+	else
+	{
+		CDialog::OnPaint();
+	}
+}
+
+// The system calls this to obtain the cursor to display while the user drags
+//  the minimized window.
+HCURSOR CVoiceTweakDlg::OnQueryDragIcon()
+{
+	return (HCURSOR) m_hIcon;
+}
+
+BOOL CVoiceTweakDlg::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) 
+{
+	NMHDR *pHdr = (NMHDR*)lParam;
+	if(pHdr->hwndFrom == m_VolumeSlider.m_hWnd)
+	{
+		GetAppMixerControls()->SetValue_Float(IMixerControls::Control::MicVolume, (VOLUMESLIDER_RANGE - m_VolumeSlider.GetPos()) / (float)VOLUMESLIDER_RANGE);
+	}
+
+	return CDialog::OnNotify(wParam, lParam, pResult);
+}
+
+
+LONG CVoiceTweakDlg::OnIdle(UINT a, LONG b)
+{
+	static DWORD startTime = GetTickCount();
+
+	if( TweakApp()->m_pVoiceRecord )
+	{
+		short samples[22 * 1024];
+	
+		// If the output has too many buffered samples, skip some data.
+		TweakApp()->m_pWaveOut->Idle();
+		int nBufferedSamples = TweakApp()->m_pWaveOut->GetNumBufferedSamples();
+		float nSeconds = nBufferedSamples / (float)VOICE_TWEAK_SAMPLE_RATE;
+		int nMinSamples = VOICE_TWEAK_SAMPLE_RATE / 5;
+		if( nBufferedSamples < nMinSamples )
+		{
+			// We want at least a certain amount of buffered data.
+			int nSamplesToAdd = nMinSamples - nBufferedSamples;
+			memset( samples, 0, nSamplesToAdd*2 );
+			TweakApp()->m_pWaveOut->PutSamples( samples, nSamplesToAdd );
+		}
+		else
+		{
+			// Get the samples.
+			int nSamples = TweakApp()->m_pVoiceRecord->GetRecordedData(samples, sizeof(samples)/BYTES_PER_SAMPLE);
+			if( nSeconds < 0.5f )
+			{
+				// Find the highest value.
+				int highValue = -100000;
+				for(int i=0; i < nSamples; i++)
+					highValue = max(abs(samples[i]), highValue);
+
+				// Set our status bar accordingly.
+				highValue = (highValue >> 9) << 9;	// Get rid of flicker.
+				m_VoiceVolume.SetPos(highValue);
+
+				// Give the samples to the wave output...
+				if(TweakApp()->m_pWaveOut)
+				{
+					// Ignore the first second or so.. it's usually garbage.				
+					DWORD curTime = GetTickCount();
+					static DWORD silentTime = 500;
+					static DWORD fadeInTime = 1000;
+					if( curTime - startTime < silentTime )
+					{
+						memset( samples, 0, nSamples*2 );
+					}
+					else if( (curTime-silentTime) - startTime < fadeInTime )
+					{
+						float flFade = ((curTime-silentTime) - startTime) / (float)fadeInTime;
+						flFade = flFade*flFade;
+						for( int i=0; i < nSamples; i++ )
+							samples[i] = (short)( samples[i] * flFade );
+					}					
+					
+					TweakApp()->m_pWaveOut->PutSamples(samples, nSamples);
+				}
+			}
+		}
+	}
+
+	// Tell the idle thread we're ready for another idle message.
+	m_WinIdle.NextIdle();
+	return 0;
+}
+
+
+void CVoiceTweakDlg::OnDestroy() 
+{
+	Term();
+
+	CDialog::OnDestroy();
+}
+
+void CVoiceTweakDlg::OnHardwareGain() 
+{
+	if(m_HardwareGain.GetCheck())
+		GetAppMixerControls()->SetValue_Float(IMixerControls::Control::MicBoost, true);
+	else
+		GetAppMixerControls()->SetValue_Float(IMixerControls::Control::MicBoost, false);
+}
+
+void CVoiceTweakDlg::OnCancel() 
+{
+	// Restore old settings.
+	GetAppMixerControls()->SetValue_Float(IMixerControls::Control::MicVolume, m_OldVolume);
+	
+	CDialog::OnCancel();
+}
+
+void CVoiceTweakDlg::OnFurtherhelp() 
+{
+}
+
+
+void CVoiceTweakDlg::OnSystemSetup() 
+{
+	TweakApp()->StopDevices();
+
+	bool bSucceeded = false;
+	HINSTANCE hInst;
+	IDirectPlayVoiceTest *pVoice;
+	if( InitDPlayVoice( hInst, pVoice ) )
+	{
+		pVoice->CheckAudioSetup(NULL, NULL, m_hWnd, DVFLAGS_ALLOWBACK);
+		TermDPlayVoice( hInst, pVoice );
+	}
+	else
+	{
+		CString str;
+		str.LoadString( MapLanguageStringID(IDS_NODPLAYVOICE) );
+		MessageBox(str);
+	}
+
+	if(!TweakApp()->StartDevices())
+		AfxPostQuitMessage(0);
+}
diff --git a/utils/voice_tweak/voice_tweakDlg.h b/utils/voice_tweak/voice_tweakDlg.h
new file mode 100644
index 0000000..60d8a63
--- /dev/null
+++ b/utils/voice_tweak/voice_tweakDlg.h
@@ -0,0 +1,85 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// voice_tweakDlg.h : header file
+//
+
+#if !defined(AFX_VOICE_TWEAKDLG_H__DC9D9CC1_33D0_4783_ABEB_F491ABE65935__INCLUDED_)
+#define AFX_VOICE_TWEAKDLG_H__DC9D9CC1_33D0_4783_ABEB_F491ABE65935__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+
+#include "voice_mixer_controls.h"
+#include "win_idle.h"
+#include "voice_tweak.h"
+
+
+#define WM_TWEAKIDLE	(WM_USER + 111)
+
+
+/////////////////////////////////////////////////////////////////////////////
+// CVoiceTweakDlg dialog
+
+class CVoiceTweakDlg : public CDialog
+{
+// Construction
+public:
+				CVoiceTweakDlg(CWnd* pParent = NULL);	// standard constructor
+	virtual		~CVoiceTweakDlg();
+	
+	void		SetString(int childControl, int stringID);
+	void		Term();
+
+// Dialog Data
+	//{{AFX_DATA(CVoiceTweakDlg)
+	enum { IDD = IDD_VOICE_TWEAK_DIALOG };
+	CButton	m_HardwareGain;
+	CProgressCtrl	m_VoiceVolume;
+	CSliderCtrl	m_VolumeSlider;
+	CEdit	m_InstructionText;
+	//}}AFX_DATA
+
+	// ClassWizard generated virtual function overrides
+	//{{AFX_VIRTUAL(CVoiceTweakDlg)
+	protected:
+	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
+	virtual BOOL OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult);
+	//}}AFX_VIRTUAL
+
+// Implementation
+protected:
+	HICON		m_hIcon;
+	CWinIdle	m_WinIdle;
+
+	CAutoGain			m_Gain;
+
+	// Old settings (for cancel button).
+	float				m_OldVolume;
+
+
+	// Generated message map functions
+	//{{AFX_MSG(CVoiceTweakDlg)
+	virtual BOOL OnInitDialog();
+	afx_msg void OnPaint();
+	afx_msg HCURSOR OnQueryDragIcon();
+	afx_msg LONG OnIdle(UINT a, LONG b);	
+	afx_msg void OnDestroy();
+	afx_msg void OnHardwareGain();
+	virtual void OnCancel();
+	afx_msg void OnFurtherhelp();
+	afx_msg void OnSystemSetup();
+	//}}AFX_MSG
+	DECLARE_MESSAGE_MAP()
+};
+
+//{{AFX_INSERT_LOCATION}}
+// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
+
+#endif // !defined(AFX_VOICE_TWEAKDLG_H__DC9D9CC1_33D0_4783_ABEB_F491ABE65935__INCLUDED_)
diff --git a/utils/voice_tweak/waveout.cpp b/utils/voice_tweak/waveout.cpp
new file mode 100644
index 0000000..2f58e76
--- /dev/null
+++ b/utils/voice_tweak/waveout.cpp
@@ -0,0 +1,205 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "stdafx.h"
+#include <windows.h>
+#include <assert.h>
+#include <mmsystem.h>
+#include "waveout.h"
+#include "ivoicecodec.h"
+
+
+class CWaveOutHdr
+{
+public:
+	WAVEHDR		m_Hdr;
+	CWaveOutHdr	*m_pNext;
+	char		m_Data[1];
+};
+
+
+class CWaveOut : public IWaveOut
+{
+// IWaveOut overrides.
+public:
+					CWaveOut();
+	virtual			~CWaveOut();
+	virtual void	Release();
+	virtual bool	PutSamples(short *pSamples, int nSamples);
+	virtual void	Idle();
+	virtual int		GetNumBufferedSamples();
+
+
+public:
+	bool			Init(int sampleRate);
+	void			Term();
+
+
+private:
+	void			KillOldHeaders();
+
+
+private:
+	HWAVEOUT		m_hWaveOut;
+	CWaveOutHdr		m_Headers;		// Head of a linked list of WAVEHDRs.
+	int				m_nBufferedSamples;
+};
+
+
+CWaveOut::CWaveOut()
+{
+	m_hWaveOut = NULL;
+	m_Headers.m_pNext = NULL;
+	m_nBufferedSamples = 0;
+}
+
+CWaveOut::~CWaveOut()
+{
+	Term();
+}
+
+void CWaveOut::Release()
+{
+	delete this;
+}
+
+bool CWaveOut::PutSamples(short *pInSamples, int nInSamples)
+{
+	int granularity = 2048;
+	while( nInSamples )
+	{
+		int nSamples = (nInSamples > granularity) ? granularity : nInSamples;
+		short *pSamples = pInSamples;
+		nInSamples -= nSamples;
+		pInSamples += nSamples;
+
+		if(!m_hWaveOut)
+			return false;
+
+		// Kill any old headers..
+		KillOldHeaders();
+
+		// Allocate a header..
+		CWaveOutHdr *pHdr;
+		if(!(pHdr = (CWaveOutHdr*)malloc(sizeof(CWaveOutHdr) - 1 + nSamples*2)))
+			return false;
+		
+		// Make a new one.
+		memset(&pHdr->m_Hdr, 0, sizeof(pHdr->m_Hdr));
+		pHdr->m_Hdr.lpData = pHdr->m_Data;
+		pHdr->m_Hdr.dwBufferLength = nSamples * 2;
+		memcpy(pHdr->m_Data, pSamples, nSamples*2);
+
+		MMRESULT mmr = waveOutPrepareHeader(m_hWaveOut, &pHdr->m_Hdr, sizeof(pHdr->m_Hdr));
+		if(mmr != MMSYSERR_NOERROR)
+			return false;
+
+		mmr = waveOutWrite(m_hWaveOut, &pHdr->m_Hdr, sizeof(pHdr->m_Hdr));
+		if(mmr != MMSYSERR_NOERROR)
+		{
+			delete pHdr;
+			waveOutUnprepareHeader(m_hWaveOut, &pHdr->m_Hdr, sizeof(pHdr->m_Hdr));
+			return false;
+		}
+
+		m_nBufferedSamples += nSamples;
+
+		// Queue up this header until waveOut is done with it.
+		pHdr->m_pNext = m_Headers.m_pNext;
+		m_Headers.m_pNext = pHdr;
+	}
+	
+	return true;
+}
+
+void CWaveOut::Idle()
+{
+	KillOldHeaders();
+}
+
+int CWaveOut::GetNumBufferedSamples()
+{
+	return m_nBufferedSamples;
+}
+
+bool CWaveOut::Init(int sampleRate)
+{
+	Term();
+
+
+	WAVEFORMATEX format =
+	{
+		WAVE_FORMAT_PCM,			// wFormatTag
+		1,							// nChannels
+		sampleRate,					// nSamplesPerSec
+		sampleRate*BYTES_PER_SAMPLE,// nAvgBytesPerSec
+		BYTES_PER_SAMPLE,			// nBlockAlign
+		BYTES_PER_SAMPLE * 8,		// wBitsPerSample
+		sizeof(WAVEFORMATEX)
+	};
+
+	MMRESULT mmr = waveOutOpen(
+		&m_hWaveOut,
+		0,
+		&format,
+		0,
+		0,
+		CALLBACK_NULL);
+
+	return mmr == MMSYSERR_NOERROR;
+}
+
+void CWaveOut::Term()
+{
+	if(m_hWaveOut)
+	{
+		waveOutClose(m_hWaveOut);
+		m_hWaveOut = NULL;
+	}
+}
+
+void CWaveOut::KillOldHeaders()
+{
+	// Look for any headers windows is done with.
+	CWaveOutHdr *pNext;
+	CWaveOutHdr **ppPrev = &m_Headers.m_pNext;
+	for(CWaveOutHdr *pCur=m_Headers.m_pNext; pCur; pCur=pNext)
+	{
+		pNext = pCur->m_pNext;
+
+		if(pCur->m_Hdr.dwFlags & WHDR_DONE)
+		{
+			m_nBufferedSamples -= (int)(pCur->m_Hdr.dwBufferLength / 2);
+			assert(m_nBufferedSamples >= 0);
+			waveOutUnprepareHeader(m_hWaveOut, &pCur->m_Hdr, sizeof(pCur->m_Hdr));
+			*ppPrev = pCur->m_pNext;
+			free(pCur);
+		}
+		else
+		{
+			ppPrev = &pCur->m_pNext;
+		}
+	}
+}
+
+
+
+IWaveOut* CreateWaveOut(int sampleRate)
+{
+	CWaveOut *pRet = new CWaveOut;
+	if(pRet && pRet->Init(sampleRate))
+	{
+		return pRet;
+	}
+	else
+	{
+		delete pRet;
+		return NULL;
+	}
+}
+
+
diff --git a/utils/voice_tweak/waveout.h b/utils/voice_tweak/waveout.h
new file mode 100644
index 0000000..839ad7e
--- /dev/null
+++ b/utils/voice_tweak/waveout.h
@@ -0,0 +1,19 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef WAVEOUT_H
+#define WAVEOUT_H
+#pragma once
+
+
+#include "iwaveout.h"
+
+
+IWaveOut* CreateWaveOut(int sampleRate);
+
+
+#endif // WAVEOUT_H
diff --git a/utils/voice_tweak/win_idle.cpp b/utils/voice_tweak/win_idle.cpp
new file mode 100644
index 0000000..69ac9da
--- /dev/null
+++ b/utils/voice_tweak/win_idle.cpp
@@ -0,0 +1,123 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// Class for sending idle messages to a window
+
+#include "stdafx.h"
+#include "win_idle.h"
+
+// Stub function to get into the object's main thread loop
+DWORD WINAPI CWinIdle::ThreadStub(LPVOID pIdle)
+{
+	return ((CWinIdle *)pIdle)->RunIdle();
+}
+
+CWinIdle::CWinIdle() :
+	m_hIdleThread(NULL),
+	m_hIdleEvent(NULL),
+	m_hStopEvent(NULL),
+	m_hWnd(0),
+	m_uMsg(0),
+	m_dwDelay(0)
+{
+}
+
+CWinIdle::~CWinIdle()
+{
+	if (m_hIdleThread)
+		OutputDebugString("!!CWinIdle Warning!! Idle thread not shut down!\n");
+}
+
+DWORD CWinIdle::RunIdle()
+{
+	// Set up an event list
+	HANDLE aEvents[2];
+
+	aEvents[0] = m_hStopEvent;
+	aEvents[1] = m_hIdleEvent;
+
+	// Wait for a stop or idle event
+	while (WaitForMultipleObjects(2, aEvents, FALSE, INFINITE) != WAIT_OBJECT_0)
+	{
+		// Send an idle message
+		PostMessage(m_hWnd, m_uMsg, m_wParam, m_lParam);
+		// Wait for a bit...
+		Sleep(m_dwDelay);
+	}
+
+	return 0;
+}
+
+BOOL CWinIdle::StartIdle(HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam, DWORD dwDelay)
+{
+	// Make sure it's not already running
+	if (m_hIdleThread)
+		return FALSE;
+
+	// Make sure they send in a valid handle..
+	if (!hWnd)
+		return FALSE;
+
+	// Create the events
+	m_hIdleEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+	m_hStopEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+
+	// Make sure the events got created
+	if ((!m_hIdleEvent) || (!m_hStopEvent))
+		return FALSE;
+
+	// Create the thread
+	DWORD dwThreadID;
+	m_hIdleThread = CreateThread(NULL, 0, CWinIdle::ThreadStub, (void *)this, 0, &dwThreadID);
+
+	if (m_hIdleThread)
+	{
+		SetThreadPriority(m_hIdleThread, THREAD_PRIORITY_IDLE);
+
+		m_hWnd = hWnd;
+		m_uMsg = uMessage;
+		m_wParam = wParam;
+		m_lParam = lParam;
+
+		m_dwDelay = dwDelay;
+	}
+
+	return m_hIdleThread != 0;
+}
+
+BOOL CWinIdle::EndIdle()
+{
+	// Make sure it's running
+	if (!m_hIdleThread)
+		return FALSE;
+
+	// Stop the idle thread
+	SetEvent(m_hStopEvent);
+	WaitForSingleObject(m_hIdleThread, INFINITE);
+	CloseHandle(m_hIdleThread);
+
+	// Get rid of the event objects
+	CloseHandle(m_hIdleEvent);
+	CloseHandle(m_hStopEvent);
+
+	// Set everything back to 0
+	m_hIdleEvent = 0;
+	m_hStopEvent = 0;
+	m_hIdleThread = 0;
+
+	return TRUE;
+}
+
+void CWinIdle::NextIdle()
+{
+	// Make sure the thread's running
+	if (!m_hIdleThread)
+		return;
+
+	// Signal an idle message
+	SetEvent(m_hIdleEvent);
+}
diff --git a/utils/voice_tweak/win_idle.h b/utils/voice_tweak/win_idle.h
new file mode 100644
index 0000000..6e2e3f3
--- /dev/null
+++ b/utils/voice_tweak/win_idle.h
@@ -0,0 +1,78 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// WinIdle.h - Defines a class for sending idle messages to a window from a secondary thread
+
+#ifndef __WINIDLE_H__
+#define __WINIDLE_H__
+
+
+class CWinIdle
+{
+protected:
+	HANDLE m_hIdleEvent, m_hStopEvent;
+
+	HWND m_hWnd;
+	UINT m_uMsg;
+	WPARAM m_wParam;
+	LPARAM m_lParam;
+
+	DWORD m_dwDelay;
+
+	HANDLE m_hIdleThread;
+
+	// The thread calling stub
+	static DWORD WINAPI ThreadStub(LPVOID pIdle);
+	// The actual idle loop
+	virtual DWORD RunIdle();
+	
+public:
+	CWinIdle();
+	virtual ~CWinIdle();
+
+	inline DWORD	GetDelay()				{return m_dwDelay;}
+	inline void		SetDelay(DWORD delay)	{m_dwDelay = delay;}
+
+	// Member access
+	virtual HANDLE GetThreadHandle() const { return m_hIdleThread; };
+
+	// Start idling, and define the message and window to use
+	//	Returns TRUE on success
+	virtual BOOL StartIdle(HWND hWnd, UINT uMessage, WPARAM wParam = 0, LPARAM lParam = 0, DWORD dwDelay = 0);
+	// Stop idling
+	//	Returns TRUE on success
+	virtual BOOL EndIdle();
+	// Notify the idle process that the message was received.
+	//	Note : If this function is not called, the idle thread will not send any messages
+	virtual void NextIdle();
+};
+
+
+// Used to slow down the idle thread while dialogs are up.
+class IdleChanger
+{
+public:
+		IdleChanger(CWinIdle *pIdle, DWORD msDelay)
+		{
+			m_pIdle = pIdle;
+			m_OldDelay = pIdle->GetDelay();
+			pIdle->SetDelay(msDelay);
+		}
+
+		~IdleChanger()
+		{
+			m_pIdle->SetDelay(m_OldDelay);
+		}
+
+	CWinIdle		*m_pIdle;
+	DWORD			m_OldDelay;
+};
+
+
+
+#endif //__WINIDLE_H__
+