422 lines
9.9 KiB
C++
422 lines
9.9 KiB
C++
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//-----------------------------------------------------------------------------
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// File: dsutil.cpp
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//
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// Desc: Routines for dealing with sounds from resources
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//
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// Copyright (C) 1995-1999 Microsoft Corporation. All Rights Reserved.
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//-----------------------------------------------------------------------------
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#define STRICT
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#include <windows.h>
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#include <mmsystem.h>
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#include <dsound.h>
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#include "dsutil.h"
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//-----------------------------------------------------------------------------
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// Name: DSUtil_LoadSoundBuffer()
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// Desc:
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//-----------------------------------------------------------------------------
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LPDIRECTSOUNDBUFFER DSUtil_LoadSoundBuffer( LPDIRECTSOUND pDS, LPCTSTR strName )
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{
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LPDIRECTSOUNDBUFFER pDSB = NULL;
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DSBUFFERDESC dsbd;
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BYTE* pbWaveData;
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ZeroMemory( &dsbd, sizeof(dsbd) );
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dsbd.dwSize = sizeof(dsbd);
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dsbd.dwFlags = DSBCAPS_STATIC | DSBCAPS_CTRLPAN | DSBCAPS_CTRLVOLUME |
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DSBCAPS_CTRLFREQUENCY | DSBCAPS_GETCURRENTPOSITION2;
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if( SUCCEEDED( DSUtil_GetWaveResource( NULL, strName, &dsbd.lpwfxFormat,
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&pbWaveData, &dsbd.dwBufferBytes ) ) )
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{
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if( SUCCEEDED( pDS->CreateSoundBuffer( &dsbd, &pDSB, NULL ) ) )
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{
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if( FAILED( DSUtil_FillSoundBuffer( pDSB, pbWaveData,
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dsbd.dwBufferBytes ) ) )
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{
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pDSB->Release();
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pDSB = NULL;
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}
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}
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else
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{
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pDSB = NULL;
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}
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}
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return pDSB;
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}
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//-----------------------------------------------------------------------------
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// Name: DSUtil_ReloadSoundBuffer()
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_ReloadSoundBuffer( LPDIRECTSOUNDBUFFER pDSB, LPCTSTR strName )
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{
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BYTE* pbWaveData;
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DWORD cbWaveSize;
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if( FAILED( DSUtil_GetWaveResource( NULL, strName, NULL, &pbWaveData,
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&cbWaveSize ) ) )
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return E_FAIL;
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if( FAILED( pDSB->Restore() ) )
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return E_FAIL;
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if( FAILED( DSUtil_FillSoundBuffer( pDSB, pbWaveData, cbWaveSize ) ) )
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return E_FAIL;
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return S_OK;
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}
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//-----------------------------------------------------------------------------
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// Name:
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_GetWaveResource( HMODULE hModule, LPCTSTR strName,
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WAVEFORMATEX** ppWaveHeader, BYTE** ppbWaveData,
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DWORD* pcbWaveSize )
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{
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HRSRC hResInfo;
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HGLOBAL hResData;
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VOID* pvRes;
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if( NULL == ( hResInfo = FindResource( hModule, strName, TEXT("WAV") ) ) )
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return E_FAIL;
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if( NULL == ( hResData = LoadResource( hModule, hResInfo ) ) )
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return E_FAIL;
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if( NULL == ( pvRes = LockResource( hResData ) ) )
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return E_FAIL;
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if( FAILED( DSUtil_ParseWaveResource( pvRes, ppWaveHeader, ppbWaveData,
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pcbWaveSize ) ) )
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return E_FAIL;
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return S_OK;
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}
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//-----------------------------------------------------------------------------
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// Name:
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// Desc:
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//-----------------------------------------------------------------------------
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SoundObject* DSUtil_CreateSound( LPDIRECTSOUND pDS, LPCTSTR strName,
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DWORD dwNumConcurrentBuffers )
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{
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SoundObject* pSound = NULL;
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LPWAVEFORMATEX pWaveHeader;
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BYTE* pbData;
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DWORD cbData;
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if( NULL == pDS )
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return NULL;
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if( dwNumConcurrentBuffers < 1 )
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dwNumConcurrentBuffers = 1;
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if( SUCCEEDED( DSUtil_GetWaveResource( NULL, strName, &pWaveHeader,
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&pbData, &cbData ) ) )
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{
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pSound = new SoundObject;
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pSound->dwNumBuffers = dwNumConcurrentBuffers;
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pSound->pbWaveData = pbData;
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pSound->cbWaveSize = cbData;
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pSound->dwCurrent = 0;
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pSound->pdsbBuffers = new LPDIRECTSOUNDBUFFER[dwNumConcurrentBuffers+1];
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pSound->pdsbBuffers[0] = DSUtil_LoadSoundBuffer( pDS, strName );
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for( DWORD i=1; i<pSound->dwNumBuffers; i++ )
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{
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if( FAILED( pDS->DuplicateSoundBuffer( pSound->pdsbBuffers[0],
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&pSound->pdsbBuffers[i] ) ) )
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{
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pSound->pdsbBuffers[i] = DSUtil_LoadSoundBuffer( pDS, strName );
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if( NULL == pSound->pdsbBuffers[i] )
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{
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DSUtil_DestroySound( pSound );
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pSound = NULL;
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break;
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}
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}
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}
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}
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return pSound;
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}
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//-----------------------------------------------------------------------------
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// Name: DSUtil_DestroySound()
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// Desc:
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//-----------------------------------------------------------------------------
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VOID DSUtil_DestroySound( SoundObject* pSound )
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{
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if( pSound )
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{
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for( DWORD i=0; i<pSound->dwNumBuffers; i++ )
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{
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if( pSound->pdsbBuffers[i] )
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pSound->pdsbBuffers[i]->Release();
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}
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delete pSound->pdsbBuffers;
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delete pSound;
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}
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}
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//-----------------------------------------------------------------------------
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// Name:
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// Desc:
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//-----------------------------------------------------------------------------
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LPDIRECTSOUNDBUFFER DSUtil_GetFreeSoundBuffer( SoundObject* pSound )
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{
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HRESULT hr;
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DWORD dwStatus;
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if( NULL == pSound )
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return NULL;
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LPDIRECTSOUNDBUFFER pDSB = pSound->pdsbBuffers[pSound->dwCurrent];
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if( NULL == pDSB )
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return NULL;
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hr = pDSB->GetStatus( &dwStatus );
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if( FAILED(hr) )
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dwStatus = 0;
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if( dwStatus & DSBSTATUS_PLAYING )
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{
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if( pSound->dwNumBuffers <= 1 )
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return NULL;
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if( ++pSound->dwCurrent >= pSound->dwNumBuffers )
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pSound->dwCurrent = 0;
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pDSB = pSound->pdsbBuffers[pSound->dwCurrent];
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hr = pDSB->GetStatus( &dwStatus);
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if( FAILED(hr) )
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dwStatus = 0;
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if( dwStatus & DSBSTATUS_PLAYING )
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{
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pDSB->Stop();
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pDSB->SetCurrentPosition( 0 );
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}
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}
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if( dwStatus & DSBSTATUS_BUFFERLOST )
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{
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if( FAILED( pDSB->Restore() ) )
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return NULL;
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if( FAILED( DSUtil_FillSoundBuffer( pDSB, pSound->pbWaveData,
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pSound->cbWaveSize ) ) )
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return NULL;
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}
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return pDSB;
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}
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//-----------------------------------------------------------------------------
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// Name: DSUtil_PlaySound()
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_PlaySound( SoundObject* pSound, DWORD dwPlayFlags )
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{
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if( NULL == pSound )
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return E_FAIL;
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if( !(dwPlayFlags & DSBPLAY_LOOPING) || (pSound->dwNumBuffers == 1) )
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{
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LPDIRECTSOUNDBUFFER pDSB = DSUtil_GetFreeSoundBuffer( pSound );
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if( pDSB )
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{
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if( SUCCEEDED( pDSB->Play( 0, 0, dwPlayFlags ) ) )
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return S_OK;
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}
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}
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return E_FAIL;
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}
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//-----------------------------------------------------------------------------
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// Name: DSUtil_StopSound()
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_StopSound( SoundObject* pSound )
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{
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if( NULL == pSound )
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return E_FAIL;
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for( DWORD i=0; i<pSound->dwNumBuffers; i++ )
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{
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pSound->pdsbBuffers[i]->Stop();
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pSound->pdsbBuffers[i]->SetCurrentPosition( 0 );
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}
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return S_OK;
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}
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//-----------------------------------------------------------------------------
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// Name:
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_FillSoundBuffer( LPDIRECTSOUNDBUFFER pDSB, BYTE* pbWaveData,
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DWORD dwWaveSize )
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{
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VOID* pMem1;
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VOID* pMem2;
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DWORD dwSize1;
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DWORD dwSize2;
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if( NULL == pDSB || NULL == pbWaveData || 0 == dwWaveSize )
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return E_FAIL;
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if( FAILED( pDSB->Lock( 0, dwWaveSize, &pMem1, &dwSize1, &pMem2,
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&dwSize2, 0 ) ) )
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return E_FAIL;
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if( 0 != dwSize1 ) CopyMemory( pMem1, pbWaveData, dwSize1 );
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if( 0 != dwSize2 ) CopyMemory( pMem2, pbWaveData+dwSize1, dwSize2 );
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pDSB->Unlock( pMem1, dwSize1, pMem2, dwSize2);
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return S_OK;
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}
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//-----------------------------------------------------------------------------
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// Name:
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// Desc:
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//-----------------------------------------------------------------------------
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HRESULT DSUtil_ParseWaveResource( VOID* pvRes, WAVEFORMATEX** ppWaveHeader,
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BYTE** ppbWaveData, DWORD* pcbWaveSize )
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{
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DWORD* pdw;
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DWORD* pdwEnd;
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DWORD dwRiff;
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DWORD dwType;
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DWORD dwLength;
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if( ppWaveHeader )
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*ppWaveHeader = NULL;
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if( ppbWaveData )
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*ppbWaveData = NULL;
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if( pcbWaveSize )
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*pcbWaveSize = 0;
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pdw = (DWORD*)pvRes;
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dwRiff = *pdw++;
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dwLength = *pdw++;
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dwType = *pdw++;
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if( dwRiff != mmioFOURCC('R', 'I', 'F', 'F') )
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return E_FAIL;
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if( dwType != mmioFOURCC('W', 'A', 'V', 'E') )
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return E_FAIL;
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pdwEnd = (DWORD *)((BYTE *)pdw + dwLength-4);
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while( pdw < pdwEnd )
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{
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dwType = *pdw++;
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dwLength = *pdw++;
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if( dwType == mmioFOURCC('f', 'm', 't', ' ') )
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{
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if (ppWaveHeader && !*ppWaveHeader)
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{
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if( dwLength < sizeof(WAVEFORMAT) )
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return E_FAIL;
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*ppWaveHeader = (WAVEFORMATEX*)pdw;
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if( (!ppbWaveData || *ppbWaveData) &&
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(!pcbWaveSize || *pcbWaveSize) )
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{
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return S_OK;
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}
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}
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}
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if( dwType == mmioFOURCC('d', 'a', 't', 'a') )
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{
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if( (ppbWaveData && !*ppbWaveData) ||
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(pcbWaveSize && !*pcbWaveSize) )
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{
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if( ppbWaveData )
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*ppbWaveData = (BYTE*)pdw;
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if( pcbWaveSize )
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*pcbWaveSize = dwLength;
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if( !ppWaveHeader || *ppWaveHeader )
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return S_OK;
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}
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}
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pdw = (DWORD*)( (BYTE*)pdw + ((dwLength+1)&~1) );
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}
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return E_FAIL;
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}
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//-----------------------------------------------------------------------------
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// Name: DSUtil_PlayPannedSound()
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// Desc: Play a sound, but first set the panning according to where the
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// object is on the screen. fScreenXPos is between -1.0f (left) and
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// 1.0f (right).
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//-----------------------------------------------------------------------------
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VOID DSUtil_PlayPannedSound( SoundObject* pSound, FLOAT fScreenXPos )
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{
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LPDIRECTSOUNDBUFFER pDSB = DSUtil_GetFreeSoundBuffer( pSound );
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|
|
|
||
|
|
if( pDSB )
|
||
|
|
{
|
||
|
|
pDSB->SetPan( (LONG)( 10000.0f * fScreenXPos ) );
|
||
|
|
pDSB->Play( 0, 0, 0 );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|