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diff --git a/public/avi/ibik.h b/public/avi/ibik.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// The copyright to the contents herein is the property of Valve, L.L.C.
+// The contents may be used and/or copied only with the written permission of
+// Valve, L.L.C., or in accordance with the terms and conditions stipulated in
+// the agreement/contract under which the contents have been supplied.
+//
+//=============================================================================
+
+#ifndef IBIK_H
+#define IBIK_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "appframework/IAppSystem.h"
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+struct BGR888_t;
+class IMaterial;
+
+//-----------------------------------------------------------------------------
+// Parameters for creating a new BINK
+//-----------------------------------------------------------------------------
+struct BIKParams_t
+{
+	BIKParams_t() :
+		m_nFrameRate( 0 ), m_nFrameScale( 1 ), m_nWidth( 0 ), m_nHeight( 0 ),
+		m_nSampleRate( 0 ), m_nSampleBits( 0 ), m_nNumChannels( 0 )
+	{
+		m_pFileName[ 0 ] = 0;
+	}
+
+	char		m_pFileName[ 256 ];
+	char		m_pPathID[ 256 ];
+
+	// fps = m_nFrameRate / m_nFrameScale
+	// for integer framerates, set framerate to the fps, and framescale to 1
+	// for ntsc-style framerates like 29.97 (or 23.976 or 59.94),
+	// set framerate to 30,000 (or 24,000 or 60,000) and framescale to 1001
+	// yes, framescale is an odd naming choice, but it matching MS's AVI api
+	int			m_nFrameRate;
+	int			m_nFrameScale;
+
+	int			m_nWidth;
+	int			m_nHeight;
+
+	// Sound/.wav info
+	int			m_nSampleRate;
+	int			m_nSampleBits;
+	int			m_nNumChannels;
+};
+
+//-----------------------------------------------------------------------------
+// Handle to an BINK
+//-----------------------------------------------------------------------------
+typedef unsigned short BIKHandle_t;
+enum
+{
+	BIKHANDLE_INVALID = (BIKHandle_t)~0
+};
+
+
+//-----------------------------------------------------------------------------
+// Handle to an BINK material
+//-----------------------------------------------------------------------------
+typedef unsigned short BIKMaterial_t;
+enum
+{
+	BIKMATERIAL_INVALID = (BIKMaterial_t)~0
+};
+
+
+//-----------------------------------------------------------------------------
+// Main AVI interface
+//-----------------------------------------------------------------------------
+#define BIK_INTERFACE_VERSION "VBik001"
+
+class IBik : public IAppSystem
+{
+public:
+	// Create/destroy a BINK material (a materialsystem IMaterial)
+	virtual BIKMaterial_t CreateMaterial( const char *pMaterialName, const char *pFileName, const char *pPathID ) = 0;
+	virtual void DestroyMaterial( BIKMaterial_t hMaterial ) = 0;
+	
+	// Update the frame (if necessary)
+	virtual bool Update( BIKMaterial_t hMaterial ) = 0;
+
+	// Gets the IMaterial associated with an BINK material
+	virtual IMaterial* GetMaterial( BIKMaterial_t hMaterial ) = 0;
+
+	// Returns the max texture coordinate of the BINK
+	virtual void GetTexCoordRange( BIKMaterial_t hMaterial, float *pMaxU, float *pMaxV ) = 0;
+
+	// Returns the frame size of the BINK (stored in a subrect of the material itself)
+	virtual void GetFrameSize( BIKMaterial_t hMaterial, int *pWidth, int *pHeight ) = 0;
+
+	// Returns the frame rate of the BINK
+	virtual int GetFrameRate( BIKMaterial_t hMaterial ) = 0;
+
+	// Returns the total frame count of the BINK
+	virtual int GetFrameCount( BIKMaterial_t hMaterial ) = 0;
+
+	// Sets the frame for an BINK material (use instead of SetTime)
+	virtual void SetFrame( BIKMaterial_t hMaterial, float flFrame ) = 0;
+
+#ifdef WIN32
+#if !defined( _X360 )
+	// Sets the direct sound device that Bink will decode to
+	virtual bool SetDirectSoundDevice( void	*pDevice ) = 0;
+#else
+	//needs to be called after xaudio is initialized
+	virtual bool HookXAudio( void ) = 0;
+#endif
+#elif defined( LINUX )
+	// Sets the SDL device that Bink will decode to
+	virtual bool SetSDLDevice( int frequency, uint16 format, int nchannels ) = 0;
+
+	// Called to mix in Bink audio. Returns true if audio was mixed in, false otherwise.
+	virtual bool SDLMixerAudioCallback( void *stream, int len ) = 0;
+#endif
+
+	// Plays a given Bink file until it completes or the user presses ESC, SPACE, or ENTER
+	virtual void PlayBinkVideo( const char *filename, void *mainWindow, int width, int height, float forcedMinTime ) = 0;
+};
+
+
+
+#endif // IBIK_H