forked from valve/halflife-sdk
162 lines
4.9 KiB
C++
162 lines
4.9 KiB
C++
//======== (C) Copyright 1999, 2000 Valve, L.L.C. All rights reserved. ========
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//
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// The copyright to the contents herein is the property of Valve, L.L.C.
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// The contents may be used and/or copied only with the written permission of
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// Valve, L.L.C., or in accordance with the terms and conditions stipulated in
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// the agreement/contract under which the contents have been supplied.
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//
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// Purpose:
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//
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// $Workfile: $
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// $Date: $
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//
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//-----------------------------------------------------------------------------
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// $Log: $
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//
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// $NoKeywords: $
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//=============================================================================
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#include <windows.h>
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#include <dsound.h>
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#include <mmsystem.h>
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#include "r_studioint.h"
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extern engine_studio_api_t IEngineStudio;
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#define RENDERTYPE_UNDEFINED 0
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#define RENDERTYPE_SOFTWARE 1
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#define RENDERTYPE_HARDWARE 2
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#define ENGINE_LAUNCHER_API_VERSION 1
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LPDIRECTSOUND lpDS = NULL;
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LPDIRECTSOUNDBUFFER lpDSBuf = NULL;
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LPHWAVEOUT lpHW = NULL;
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static HMODULE hEngine = 0;
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typedef struct engine_api_s
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{
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int version;
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int rendertype;
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int size;
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// Functions
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void ( *unused1 ) ( void );
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void ( *unused2 ) ( void );
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void ( *unused3 ) ( void );
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void ( *unused4 ) ( void );
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void ( *unused5 ) ( void );
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void ( *unused6 ) ( void );
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void ( *unused7 ) ( void );
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void ( *unused8 ) ( void );
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void ( *unused9 ) ( void );
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void ( *unused10 ) ( void );
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void ( *unused11 ) ( void );
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void ( *unused12 ) ( void );
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void ( *unused13 ) ( void );
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void ( *unused14 ) ( void );
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void ( *unused15 ) ( void );
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void ( *unused16 ) ( void );
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void ( *unused17 ) ( void );
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void ( *unused18 ) ( void );
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void ( *unused19 ) ( void );
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void ( *unused20 ) ( void );
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void ( *unused21 ) ( void );
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void ( *unused22 ) ( void );
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void ( *unused23 ) ( void );
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void ( *unused24 ) ( void );
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void ( *unused25 ) ( void );
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void ( *unused26 ) ( void );
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void ( *unused27 ) ( void );
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void ( *unused28 ) ( void );
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void ( *unused29 ) ( void );
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void ( *unused30 ) ( void );
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void ( *unused31 ) ( void );
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void ( *unused32 ) ( void );
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void ( *unused33 ) ( void );
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void ( *unused34 ) ( void );
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void ( *S_GetDSPointer ) ( struct IDirectSound **lpDS, struct IDirectSoundBuffer **lpDSBuf );
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void *( *S_GetWAVPointer ) ( void );
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void ( *unused35 ) ( void );
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void ( *unused36 ) ( void );
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void ( *unused37 ) ( void );
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void ( *unused38 ) ( void );
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void ( *unused39 ) ( void );
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void ( *unused40 ) ( void );
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void ( *unused41 ) ( void );
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void ( *unused42 ) ( void );
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void ( *unused43 ) ( void );
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void ( *unused44 ) ( void );
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void ( *unused45 ) ( void );
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void ( *unused46 ) ( void );
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void ( *unused47 ) ( void );
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void ( *unused48 ) ( void );
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void ( *unused49 ) ( void );
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void ( *unused50 ) ( void );
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void ( *unused51 ) ( void );
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void ( *unused52 ) ( void );
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void ( *unused53 ) ( void );
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void ( *unused54 ) ( void );
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void ( *unused55 ) ( void );
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} engine_api_t;
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static engine_api_t engineapi;
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typedef int (*engine_api_func)( int version, int size, struct engine_api_s *api );
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//-----------------------------------------------------------------------------
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// Purpose: Get launcher/engine interface from engine module
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// Input : hMod -
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// Output : int
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//-----------------------------------------------------------------------------
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int Eng_LoadFunctions( HMODULE hMod )
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{
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engine_api_func pfnEngineAPI;
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pfnEngineAPI = ( engine_api_func )GetProcAddress( hMod, "Sys_EngineAPI" );
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if ( !pfnEngineAPI )
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return 0;
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if ( !(*pfnEngineAPI)( ENGINE_LAUNCHER_API_VERSION, sizeof( engine_api_t ), &engineapi ) )
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return 0;
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// All is okay
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return 1;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Load proper engine .dll and get pointer to either DSound and primary buffer or HWAVEOUT ( NT 4.0, e.g. )
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//-----------------------------------------------------------------------------
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void LoadSoundAPIs( void )
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{
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hEngine = ::LoadLibrary( IEngineStudio.IsHardware() ? "hw.dll" : "sw.dll" );
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if ( hEngine )
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{
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if ( Eng_LoadFunctions( hEngine ) )
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{
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if ( engineapi.S_GetDSPointer && engineapi.S_GetWAVPointer )
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{
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engineapi.S_GetDSPointer(&lpDS, &lpDSBuf);
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lpHW = (HWAVEOUT FAR *)engineapi.S_GetWAVPointer();
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Close engine library, release sound pointers
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//-----------------------------------------------------------------------------
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void ShutdownSoundAPIs( void )
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{
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if( hEngine )
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{
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FreeLibrary( hEngine );
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hEngine = 0;
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}
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lpDS = 0;
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lpDSBuf = 0;
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lpHW = 0;
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}
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