How to load a sound?

Graphics and GPU Programming Programming

Started by bartiss March 17, 2004 03:08 PM

13 comments, last by bartiss 20 years, 1 month ago

bartiss

136

Author

March 17, 2004 03:08 PM

I know it sounds trivial but I started learning DirectSound an hour ago

Initialization is complete, primary and secondary buffers are ready and here I hit the wall. How to load a small wave file and put it into the buffer? Is there a method to do this? (just like loading bitmaps onto surfaces) Or do I have to create my own function from scratch? Anyone got a "LoadSound()" function?

Or anybody knows where to get it? Thanks

Programmer16

2,321

March 17, 2004 04:22 PM

What version of DirectX are you using? If you''re using 8 you can use this (from the tutorial on this site):

char SearchPath[MAX_PATH];IDirectMusicSegment8* pSegment = NULL;CoCreateInstance(CLSID_IDirectMusicSegment, NULL, CLSTX_INPROC, IID_IDirectMusicSegment8, (void**)&pSegment);GetCurrentDirectory(MAX_PATH, SearchPath);// g_pMusicLoader: Predefined IDirectMusicLoader8*g_pMusicLoader->SetSearchDirectory(GUID_DirectMusicAllTypes, SearchPath, FALSE);g_pMusicLoader->LoadObjectFromFile(CLSID_DirectMusicSegment, IID_IDirectMusicSebment8, Filename, (void**)&pSegment);// g_pPerformance: Predefined IDirectMusicPerformance8*pSegment->Download(g_pPerformance);g_pPerformance->PlaySegmentEx(pSegment, NULL, NULL, 0, 0, NULL, NULL, NULL);// To stopg_pPerformance->StopEx(pSegment, 0, 0);

This is just a modified version of the DirectAudio8 tutorial here on GameDev.

/*
I use DirectX 8.1 and C++ (Microsoft Visual C++ 6.0 Professional edition)
*/

Bulma

140

March 17, 2004 05:10 PM

You should check out CSoundManager class, and use:
CSoundManager::CreateFromMemory(), and FillBufferWithSound()
functions...

Bulma

Sailorstick

142

March 17, 2004 05:33 PM

Yes, have a look at the dsutil.h and dsutil.cpp files in DXSDK\Samples\C++\Common\Include
Use a CSoundManager class to create CSound objects. You specify a filename on creation so everything is already done

Unless you are doing this as a learning excercise in which case you will learn next to nothing using this method.

johnnyBravo

100

March 17, 2004 05:38 PM

i ripped the stuff out of the 3d directsound example and made a class out of it, its quite messy looking but works nicely

you need to include string header

class DWave{private:	LPDIRECTSOUND8 m_pDS;    WAVEFORMATEX* m_pwfx;            HMMIO         m_hmmio;           MMCKINFO      m_ck;              MMCKINFO      m_ckRiff;          MMIOINFO      m_mmioinfoOut;    DWORD         m_dwFlags;    BYTE*         m_pbData;    BYTE*         m_pbDataCur;    ULONG         m_ulDataSize;    CHAR*         m_pResourceBuffer;	void Open( char strFileName[], WAVEFORMATEX* pwfx, DWORD dwFlags )	{		m_dwFlags = dwFlags;				if( m_dwFlags == 1 )		{			if(m_pwfx)			{ 				delete[] m_pwfx;				m_pwfx=NULL;			}			m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF | MMIO_READ );						if( NULL == m_hmmio )			{				DWORD   dwSize=0;				VOID*   pvRes=NULL; 				m_pResourceBuffer = new CHAR[ dwSize ];				memcpy( m_pResourceBuffer, pvRes, dwSize );				MMIOINFO mmioInfo;				ZeroMemory( &mmioInfo, sizeof(mmioInfo) );				mmioInfo.fccIOProc = FOURCC_MEM;				mmioInfo.cchBuffer = dwSize;				mmioInfo.pchBuffer = (CHAR*) m_pResourceBuffer;				m_hmmio = mmioOpen( NULL, &mmioInfo, MMIO_ALLOCBUF | MMIO_READ );			}			ReadMMIO();			ResetFile();			m_ck.cksize = m_ck.cksize;		}		else		{			m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF  | MMIO_READWRITE | MMIO_CREATE );			WriteMMIO( pwfx );			ResetFile();     		}	}	void ReadMMIO()	{		MMCKINFO        ckIn;          		PCMWAVEFORMAT   pcmWaveFormat;    		m_pwfx = NULL;		mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 );		ckIn.ckid = mmioFOURCC('f', 'm', 't', ' ');		mmioDescend( m_hmmio, &ckIn, &m_ckRiff, MMIO_FINDCHUNK ) ;		mmioRead( m_hmmio, (HPSTR) &pcmWaveFormat, sizeof(pcmWaveFormat));       		if( pcmWaveFormat.wf.wFormatTag == WAVE_FORMAT_PCM )		{			m_pwfx = (WAVEFORMATEX*)new CHAR[ sizeof(WAVEFORMATEX) ];			memcpy( m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat) );			m_pwfx->cbSize = 0;		}		else		{			WORD cbExtraBytes = 0L;			mmioRead( m_hmmio, (CHAR*)&cbExtraBytes, sizeof(WORD)) ;			m_pwfx = (WAVEFORMATEX*)new CHAR[ sizeof(WAVEFORMATEX) + cbExtraBytes ];			memcpy( m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat) );			m_pwfx->cbSize = cbExtraBytes; 			if( mmioRead( m_hmmio, (CHAR*)(((BYTE*)&(m_pwfx->cbSize))+sizeof(WORD)), cbExtraBytes ) != cbExtraBytes )			{				if(m_pwfx) 				{ 					delete m_pwfx;					m_pwfx=NULL; 				} 			} 		}		if( 0 != mmioAscend( m_hmmio, &ckIn, 0 ) )		{			if(m_pwfx)			{ 				delete m_pwfx; 				m_pwfx=NULL; 			}		}	}	void ResetFile()	{		if( m_dwFlags == 1 )		{			mmioSeek( m_hmmio, m_ckRiff.dwDataOffset + sizeof(FOURCC),SEEK_SET );			m_ck.ckid = mmioFOURCC('d', 'a', 't', 'a');			mmioDescend( m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK ) ;		}		else		{			m_ck.ckid = mmioFOURCC('d', 'a', 't', 'a');			m_ck.cksize = 0;			mmioCreateChunk( m_hmmio, &m_ck, 0 ) ;			mmioGetInfo( m_hmmio, &m_mmioinfoOut, 0 );		}	}	void Read( BYTE* pBuffer, DWORD dwSizeToRead, DWORD* pdwSizeRead )	{		MMIOINFO mmioinfoIn; 		if( pdwSizeRead != NULL )			*pdwSizeRead = 0;		mmioGetInfo( m_hmmio, &mmioinfoIn, 0 );                  		UINT cbDataIn = dwSizeToRead;        		if( cbDataIn > m_ck.cksize ) 			cbDataIn = m_ck.cksize;       		m_ck.cksize -= cbDataIn;    		for( DWORD cT = 0; cT < cbDataIn; cT++ )		{			if( mmioinfoIn.pchNext == mmioinfoIn.pchEndRead )				mmioAdvance( m_hmmio, &mmioinfoIn, MMIO_READ );			*((BYTE*)pBuffer+cT) = *((BYTE*)mmioinfoIn.pchNext);			mmioinfoIn.pchNext++;		}		mmioSetInfo( m_hmmio, &mmioinfoIn, 0 );           		if( pdwSizeRead != NULL )			*pdwSizeRead = cbDataIn;	}	void Close()	{		if( m_dwFlags == 1 )		{			mmioClose( m_hmmio, 0 );			m_hmmio = NULL;   			if(m_pResourceBuffer) 			{ 				delete[] m_pResourceBuffer; 				m_pResourceBuffer=NULL; 			}  		}		else		{			m_mmioinfoOut.dwFlags |= MMIO_DIRTY;			mmioSetInfo( m_hmmio, &m_mmioinfoOut, 0 );			mmioAscend( m_hmmio, &m_ck, 0 );			mmioAscend( m_hmmio, &m_ckRiff, 0 ) ;			mmioSeek( m_hmmio, 0, SEEK_SET );			(INT)mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 );			m_ck.ckid = mmioFOURCC('f', 'a', 'c', 't');			if( 0 == mmioDescend( m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK ) ) 			{				DWORD dwSamples = 0;				mmioWrite( m_hmmio, (HPSTR)&dwSamples, sizeof(DWORD) );				mmioAscend( m_hmmio, &m_ck, 0 ); 			}    			mmioAscend( m_hmmio, &m_ckRiff, 0 );			mmioClose( m_hmmio, 0 );			m_hmmio = NULL;		} 	}	void WriteMMIO( WAVEFORMATEX *pwfxDest )	{		DWORD    dwFactChunk; 		MMCKINFO ckOut1;		dwFactChunk = (DWORD)-1;		m_ckRiff.fccType = mmioFOURCC('W', 'A', 'V', 'E');       		m_ckRiff.cksize = 0;		mmioCreateChunk( m_hmmio, &m_ckRiff, MMIO_CREATERIFF ) ;       		m_ck.ckid = mmioFOURCC('f', 'm', 't', ' ');		m_ck.cksize = sizeof(PCMWAVEFORMAT);   		mmioCreateChunk( m_hmmio, &m_ck, 0 );       		if( pwfxDest->wFormatTag == WAVE_FORMAT_PCM )			 mmioWrite( m_hmmio, (HPSTR) pwfxDest, sizeof(PCMWAVEFORMAT)); 		else         			(UINT)mmioWrite( m_hmmio, (HPSTR) pwfxDest, sizeof(*pwfxDest) + pwfxDest->cbSize );  		mmioAscend( m_hmmio, &m_ck, 0 ) ;		ckOut1.ckid = mmioFOURCC('f', 'a', 'c', 't');		ckOut1.cksize = 0;		mmioCreateChunk( m_hmmio, &ckOut1, 0 );       		mmioWrite( m_hmmio, (HPSTR)&dwFactChunk, sizeof(dwFactChunk));		mmioAscend( m_hmmio, &ckOut1, 0 );           	}    LPDIRECTSOUNDBUFFER m_apDSBuffer;    DWORD m_dwDSBufferSize;    DWORD m_dwCreationFlags;	void CSoundA(char filename[] , GUID guid3DAlgorithm ,DWORD dwFlags = 0)	{		m_pwfx    = NULL;		m_hmmio   = NULL;		m_pResourceBuffer = NULL;   		Open( filename, NULL, 1 );		DSBUFFERDESC dsbd;		ZeroMemory( &dsbd, sizeof(DSBUFFERDESC) );		dsbd.dwSize          = sizeof(DSBUFFERDESC);		dsbd.dwFlags         = dwFlags;		dsbd.dwBufferBytes   = m_ck.cksize;		dsbd.guid3DAlgorithm = guid3DAlgorithm;		dsbd.lpwfxFormat     = m_pwfx;		m_pDS->CreateSoundBuffer( &dsbd, &m_apDSBuffer, NULL );		m_dwDSBufferSize = m_ck.cksize;		m_dwCreationFlags = dwFlags;		FillBufferWithSound( m_apDSBuffer, FALSE );		Close();	}	void FillBufferWithSound( LPDIRECTSOUNDBUFFER pDSB, BOOL bRepeatWavIfBufferLarger )	{		VOID*   pDSLockedBuffer      = NULL; 		DWORD   dwDSLockedBufferSize = 0;   		DWORD   dwWavDataRead        = 0;   		RestoreBuffer( pDSB, NULL );		pDSB->Lock( 0, m_dwDSBufferSize, &pDSLockedBuffer, &dwDSLockedBufferSize,   NULL, NULL, 0L );		ResetFile();		Read( (BYTE*) pDSLockedBuffer,  dwDSLockedBufferSize,   &dwWavDataRead ) ;		if( dwWavDataRead == 0 )			FillMemory( (BYTE*) pDSLockedBuffer, dwDSLockedBufferSize, (BYTE)(m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );		else if( dwWavDataRead < dwDSLockedBufferSize )		{			if( bRepeatWavIfBufferLarger )			{       				DWORD dwReadSoFar = dwWavDataRead;   				while( dwReadSoFar < dwDSLockedBufferSize )				{  					ResetFile();					Read( (BYTE*)pDSLockedBuffer + dwReadSoFar, dwDSLockedBufferSize - dwReadSoFar, &dwWavDataRead );					dwReadSoFar += dwWavDataRead;				} 			}			else				FillMemory( (BYTE*) pDSLockedBuffer + dwWavDataRead, dwDSLockedBufferSize - dwWavDataRead, (BYTE)(m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );		}		pDSB->Unlock( pDSLockedBuffer, dwDSLockedBufferSize, NULL, 0 );	}	void RestoreBuffer( LPDIRECTSOUNDBUFFER pDSB, BOOL* pbWasRestored )	{		HRESULT hr;		if( pbWasRestored )			*pbWasRestored = FALSE;		DWORD dwStatus;		pDSB->GetStatus( &dwStatus );    		if( dwStatus & DSBSTATUS_BUFFERLOST )		{			do 			{				hr = pDSB->Restore();				if( hr == DSERR_BUFFERLOST )					Sleep( 10 );			}			while( ( pDSB->Restore() ) == DSERR_BUFFERLOST );			if( pbWasRestored != NULL )				*pbWasRestored = TRUE;		}	}	HRESULT Get3DBufferInterface( DWORD dwIndex, LPDIRECTSOUND3DBUFFER* ppDS3DBuffer )	{		*ppDS3DBuffer = NULL;		return m_apDSBuffer->QueryInterface( IID_IDirectSound3DBuffer, (VOID**)ppDS3DBuffer );	}	LPDIRECTSOUND3DBUFFER   g_pDS3DBuffer;   	DS3DBUFFER              g_dsBufferParams;               	bool threeDFlag;		long volume;	float posX, posY, posZ;	float minDist;	float maxDist;	float rolloff;public:	~DWave()	{		if(m_apDSBuffer)		{ 			m_apDSBuffer->Release();			m_apDSBuffer=NULL; 		}				if(g_pDS3DBuffer) 		{ 			g_pDS3DBuffer->Release(); 			g_pDS3DBuffer=NULL; 		}	}		void create(LPDIRECTSOUND8 dsDevice,string filename, int threeDimensionLevel=0)	{		m_pDS=dsDevice;		LPSTR cfilename =strdup(filename.c_str());		switch (threeDimensionLevel) {			case 0:				CSoundA(cfilename,GUID_NULL,DSBCAPS_CTRLVOLUME);				threeDFlag=false;				break;						case 1:				CSoundA(cfilename,GUID_NULL,DSBCAPS_CTRL3D|DSBCAPS_CTRLVOLUME);				break;						case 2:				CSoundA(cfilename,DS3DALG_NO_VIRTUALIZATION,DSBCAPS_CTRL3D|DSBCAPS_CTRLVOLUME);				break;						case 3:				CSoundA(cfilename,DS3DALG_HRTF_LIGHT,DSBCAPS_CTRL3D|DSBCAPS_CTRLVOLUME);				break;						case 4:				CSoundA(cfilename,DS3DALG_HRTF_FULL,DSBCAPS_CTRL3D|DSBCAPS_CTRLVOLUME);				break;		}					if (threeDimensionLevel!=0)		{			Get3DBufferInterface( 0, &g_pDS3DBuffer );			g_dsBufferParams.dwSize = sizeof(DS3DBUFFER);			g_pDS3DBuffer->GetAllParameters( &g_dsBufferParams );			g_dsBufferParams.dwMode = DS3DMODE_HEADRELATIVE;			g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, DS3D_IMMEDIATE );						DSBCAPS dsbcaps;			ZeroMemory( &dsbcaps, sizeof(DSBCAPS) );			dsbcaps.dwSize = sizeof(DSBCAPS);						m_apDSBuffer->GetCaps( &dsbcaps );			threeDFlag=true;		}		threeDFlag=false;		setMinDistance(1);		setMaxDistance(1);		setPosition(0,0,0);		setVolume(0);	}	void setPosition(float x, float y, float z)	{		if (threeDFlag)			g_pDS3DBuffer->SetPosition(x ,y,z,DS3D_IMMEDIATE);	}		void setMinDistance(float value)	{		if (threeDFlag)			g_pDS3DBuffer->SetMinDistance(value,DS3D_IMMEDIATE);	}	void setMaxDistance(float value)	{		if (threeDFlag)			g_pDS3DBuffer->SetMaxDistance(value,DS3D_IMMEDIATE);	}	void setVolume(int value)	{		m_apDSBuffer ->SetVolume(volume);	}	void play()	{		m_apDSBuffer ->Stop();		m_apDSBuffer ->SetCurrentPosition(0);		m_apDSBuffer->Play(0,0,0 );	}	void stop()	{		m_apDSBuffer ->Stop();		m_apDSBuffer ->SetCurrentPosition(0);	}	bool isPlaying()	{		bool answer=false;		DWORD dwStatus = 0;		m_apDSBuffer->GetStatus( &dwStatus );		answer |= ( ( dwStatus & DSBSTATUS_PLAYING ) != 0 );		return answer;	}};

basically to use it is:
//initialise
DWave sndGunshot;

//load
sndGunshot.create(dsDevice,"gunshot.wav",0);

//play
sndGunshot.play();

The 0 at the end represents the 3d sound level,
0 is none, 1 -4 , 4 being slowest but best 3d level.

ive got other functions that set the position etc

.............dammmit programmer16 thats direct music stop getting mixed up!

[edited by - johnnyBravo on March 17, 2004 6:39:04 PM]

Gyannea

122

March 17, 2004 06:46 PM

All you need to do is to use the DirectSoundBuffer methods ->Lock() and ->Unlock() to load your buffer. If it is a sound that will be repeated over and over again all you need to do is load it once and then call ->Play() when you want to use it. If you have a huge amount of sound that will be continuously loaded (like a CD track) then you will have to do a streaming buffer.

The ->Lock() function opens the buffer for writing. You specify where and how much you want to write (maybe the whole buffer) and it returns a set of pointers (two pointers because it is a circular buffer). Then you can just ''memcpy()'' your sound into the buffer. Then you call the ->Unlock() function and the job is done. To hear it call ->Play().

Here''s some simple code from a streaming example:

===================================================
void Mtransceiver::SendData(void)
{
void *firstBuf, *secondBuf;
DWORD firstLen, secondLen;

// Lock the send buffer and load some data
if (FAILED(pdsTXSecBufOb->Lock(
txwriteposition,// Offset in bytes from start to where lock begins (this is my pointer needed to keep track of where I am for streaming purposes)
bytestoread, // Number of bytes to lock
&firstBuf, // Returns a pointer to start of first buffer
&firstLen, // Returns number of bytes in first buffer
&secondBuf, // Returns pointer to start of second buffer (may be NULL)
&secondLen, // Returns number of bytes in second buffer (not needed if second buffer is NULL)
0)))
{
StopSending(0);
return;
}

// Copy the data into the first buffer (txbuffer is my pre-loaded junk)
memcpy(firstBuf, txbuffer, firstLen);

// Is there more (wrapped) data to copy? If so, append it to the first chunk of copied data
if (secondLen)
{
memcpy(secondBuf, txbuffer + firstLen, secondLen);
}

// Unlock the buffer
if (FAILED(pdsTXSecBufOb->Unlock(firstBuf, firstLen, secondBuf, secondLen)))
{
StopSending(0);
return;
}

LoadSendBuffer(); // THis loads ''txbuffer'' for next time (only needed for streaming)
}
=========================================

Hope it helps. Its a little more low level than the other approaches, but that''s how it works.

Brian

Brian Reinhold

Gyannea

122

March 18, 2004 06:06 AM

Someone needs to tell me how to do that neat loading of code samples. It''s a lot easier to read than my cut and paste.

Brian

Brian Reinhold

bartiss

136

Author

March 18, 2004 11:43 AM

Thanks Gyannea.

I like low level

But that''s not the point. You see, I need to see a code sample which would tell me how to load a specific file ("sound.wav") to the sound buffer (or to any buffer

)

I''m a beginner in windows programming, but I managed to startup and use DirectDraw so I make terribly coded,mute games for the pleeasure of creation itself. I would never suspect that loading a wave file is more complicated than loading a bitmap onto a surface... But it''s probably just my lack of knowledge.

Thanks anyway!

oni_viper

122

March 18, 2004 05:31 PM

uh, johnnyBravo, i''m having problems using your code. i get some wierd error with the GUID_NULL

c:\documents and settings\owner\desktop\game - english class\game\dwave.h(334) : error C2065: ''GUID_NULL'' : undeclared identifier

any ideas on how to fix that?

oops...

johnnyBravo

100

March 18, 2004 06:02 PM

try adding these
#define INITGUID
#include <dsound.h>
#include <string>

and add these to the linkers:
dxguid.lib, dsound.lib

but see if you can run the directsound sdk samples, the 3d one would be ideal.

if that runs,mine will work

(you probably dont need INITGUID, i think i had that in mine because i was attempting dplay)

[edited by - johnnyBravo on March 18, 2004 7:10:04 PM]

How to load a sound?

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