- //--------------------------------------------------------------------------------------
- // File: WaveFile.h
- //
- // Copyright (c) Microsoft Corporation. All rights reserved.
- //--------------------------------------------------------------------------------------
- #pragma comment(lib, "winmm.lib")
- #pragma once
- #include <windows.h>
- #include <mmsystem.h>
- #include <mmreg.h>
- #define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p) = NULL; } }
- #define SAFE_DELETE_ARRAY(p) { if(p) { delete [](p); (p) = NULL; } }
- #define SAFE_DELETE(p) { if(p) { delete (p); (p) = NULL; } }
- //-----------------------------------------------------------------------------
- // Typing macros
- //-----------------------------------------------------------------------------
- #define WAVEFILE_READ 1
- #define WAVEFILE_WRITE 2
- class CWaveFile
- {
- public:
- WAVEFORMATEX* m_pwfx; // Pointer to WAVEFORMATEX structure
- HMMIO m_hmmio; // MM I/O handle for the WAVE
- MMCKINFO m_ck; // Multimedia RIFF chunk
- MMCKINFO m_ckRiff; // Use in opening a WAVE file
- DWORD m_dwSize; // The size of the wave file
- MMIOINFO m_mmioinfoOut;
- DWORD m_dwFlags;
- BOOL m_bIsReadingFromMemory;
- BYTE* m_pbData;
- BYTE* m_pbDataCur;
- ULONG m_ulDataSize;
- CHAR* m_pResourceBuffer;
- protected:
- HRESULT ReadMMIO();
- HRESULT WriteMMIO( WAVEFORMATEX* pwfxDest );
- public:
- CWaveFile();
- ~CWaveFile();
- HRESULT Open( LPTSTR strFileName, WAVEFORMATEX* pwfx, DWORD dwFlags );
- HRESULT OpenFromMemory( BYTE* pbData, ULONG ulDataSize, WAVEFORMATEX* pwfx, DWORD dwFlags );
- HRESULT Close();
- HRESULT Read( BYTE* pBuffer, DWORD dwSizeToRead, DWORD* pdwSizeRead );
- HRESULT Write( UINT nSizeToWrite, BYTE* pbData, UINT* pnSizeWrote );
- DWORD GetSize();
- HRESULT ResetFile();
- WAVEFORMATEX* GetFormat()
- {
- return m_pwfx;
- };
- };
- //--------------------------------------------------------------------------------------
- // File: WaveFile.cpp
- //
- // Copyright (c) Microsoft Corporation. All rights reserved.
- //--------------------------------------------------------------------------------------
- #include "stdafx.h"
- #include "WaveFile.h"
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::CWaveFile()
- // Desc: Constructs the class. Call Open() to open a wave file for reading.
- // Then call Read() as needed. Calling the destructor or Close()
- // will close the file.
- //-----------------------------------------------------------------------------
- CWaveFile::CWaveFile()
- {
- m_pwfx = NULL;
- m_hmmio = NULL;
- m_pResourceBuffer = NULL;
- m_dwSize = 0;
- m_bIsReadingFromMemory = FALSE;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::~CWaveFile()
- // Desc: Destructs the class
- //-----------------------------------------------------------------------------
- CWaveFile::~CWaveFile()
- {
- Close();
- if( !m_bIsReadingFromMemory )
- SAFE_DELETE_ARRAY( m_pwfx );
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::Open()
- // Desc: Opens a wave file for reading
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::Open( LPTSTR strFileName, WAVEFORMATEX* pwfx, DWORD dwFlags )
- {
- HRESULT hr;
- m_dwFlags = dwFlags;
- m_bIsReadingFromMemory = FALSE;
- if( m_dwFlags == WAVEFILE_READ )
- {
- if( strFileName == NULL )
- return E_INVALIDARG;
- SAFE_DELETE_ARRAY( m_pwfx );
- m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF | MMIO_READ );
- if( NULL == m_hmmio )
- {
- HRSRC hResInfo;
- HGLOBAL hResData;
- DWORD dwSize;
- VOID* pvRes;
- // Loading it as a file failed, so try it as a resource
- if( NULL == ( hResInfo = FindResource( NULL, strFileName, TEXT( "WAVE" ) ) ) )
- {
- if( NULL == ( hResInfo = FindResource( NULL, strFileName, TEXT( "WAV" ) ) ) )
- return E_FAIL;
- }
- if( NULL == ( hResData = LoadResource( GetModuleHandle( NULL ), hResInfo ) ) )
- return E_FAIL;
- if( 0 == ( dwSize = SizeofResource( GetModuleHandle( NULL ), hResInfo ) ) )
- return E_FAIL;
- if( NULL == ( pvRes = LockResource( hResData ) ) )
- return E_FAIL;
- m_pResourceBuffer = new CHAR[ dwSize ];
- if( m_pResourceBuffer == NULL )
- return E_OUTOFMEMORY;
- 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 );
- }
- if( FAILED( hr = ReadMMIO() ) )
- {
- // ReadMMIO will fail if its an not a wave file
- mmioClose( m_hmmio, 0 );
- return hr;
- }
- if( FAILED( hr = ResetFile() ) )
- return hr;
- // After the reset, the size of the wav file is m_ck.cksize so store it now
- m_dwSize = m_ck.cksize;
- }
- else
- {
- m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF |
- MMIO_READWRITE |
- MMIO_CREATE );
- if( NULL == m_hmmio )
- return E_FAIL;
- if( FAILED( hr = WriteMMIO( pwfx ) ) )
- {
- mmioClose( m_hmmio, 0 );
- return hr;
- }
- if( FAILED( hr = ResetFile() ) )
- return hr;
- }
- return hr;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::OpenFromMemory()
- // Desc: copy data to CWaveFile member variable from memory
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::OpenFromMemory( BYTE* pbData, ULONG ulDataSize,
- WAVEFORMATEX* pwfx, DWORD dwFlags )
- {
- m_pwfx = pwfx;
- m_ulDataSize = ulDataSize;
- m_pbData = pbData;
- m_pbDataCur = m_pbData;
- m_bIsReadingFromMemory = TRUE;
- if( dwFlags != WAVEFILE_READ )
- return E_NOTIMPL;
- return S_OK;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::ReadMMIO()
- // Desc: Support function for reading from a multimedia I/O stream.
- // m_hmmio must be valid before calling. This function uses it to
- // update m_ckRiff, and m_pwfx.
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::ReadMMIO()
- {
- MMCKINFO ckIn; // chunk info. for general use.
- PCMWAVEFORMAT pcmWaveFormat; // Temp PCM structure to load in.
- m_pwfx = NULL;
- if( ( 0 != mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 ) ) )
- return E_FAIL;
- // Check to make sure this is a valid wave file
- if( ( m_ckRiff.ckid != FOURCC_RIFF ) ||
- ( m_ckRiff.fccType != mmioFOURCC( 'W', 'A', 'V', 'E' ) ) )
- return E_FAIL;
- // Search the input file for for the 'fmt ' chunk.
- ckIn.ckid = mmioFOURCC( 'f', 'm', 't', ' ' );
- if( 0 != mmioDescend( m_hmmio, &ckIn, &m_ckRiff, MMIO_FINDCHUNK ) )
- return E_FAIL;
- // Expect the 'fmt' chunk to be at least as large as <PCMWAVEFORMAT>;
- // if there are extra parameters at the end, we'll ignore them
- if( ckIn.cksize < ( LONG )sizeof( PCMWAVEFORMAT ) )
- return E_FAIL;
- // Read the 'fmt ' chunk into <pcmWaveFormat>.
- if( mmioRead( m_hmmio, ( HPSTR )&pcmWaveFormat,
- sizeof( pcmWaveFormat ) ) != sizeof( pcmWaveFormat ) )
- return E_FAIL;
- // Allocate the waveformatex, but if its not pcm format, read the next
- // word, and thats how many extra bytes to allocate.
- if( pcmWaveFormat.wf.wFormatTag == WAVE_FORMAT_PCM )
- {
- m_pwfx = ( WAVEFORMATEX* )new CHAR[ sizeof( WAVEFORMATEX ) ];
- if( NULL == m_pwfx )
- return E_FAIL;
- // Copy the bytes from the pcm structure to the waveformatex structure
- memcpy( m_pwfx, &pcmWaveFormat, sizeof( pcmWaveFormat ) );
- m_pwfx->cbSize = 0;
- }
- else
- {
- // Read in length of extra bytes.
- WORD cbExtraBytes = 0L;
- if( mmioRead( m_hmmio, ( CHAR* )&cbExtraBytes, sizeof( WORD ) ) != sizeof( WORD ) )
- return E_FAIL;
- m_pwfx = ( WAVEFORMATEX* )new CHAR[ sizeof( WAVEFORMATEX ) + cbExtraBytes ];
- if( NULL == m_pwfx )
- return E_FAIL;
- // Copy the bytes from the pcm structure to the waveformatex structure
- memcpy( m_pwfx, &pcmWaveFormat, sizeof( pcmWaveFormat ) );
- m_pwfx->cbSize = cbExtraBytes;
- // Now, read those extra bytes into the structure, if cbExtraAlloc != 0.
- if( mmioRead( m_hmmio, ( CHAR* )( ( ( BYTE* )&( m_pwfx->cbSize ) ) + sizeof( WORD ) ),
- cbExtraBytes ) != cbExtraBytes )
- {
- SAFE_DELETE_ARRAY( m_pwfx );
- return E_FAIL;
- }
- }
- // Ascend the input file out of the 'fmt ' chunk.
- if( 0 != mmioAscend( m_hmmio, &ckIn, 0 ) )
- {
- SAFE_DELETE_ARRAY( m_pwfx );
- return E_FAIL;
- }
- return S_OK;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::GetSize()
- // Desc: Retuns the size of the read access wave file
- //-----------------------------------------------------------------------------
- DWORD CWaveFile::GetSize()
- {
- return m_dwSize;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::ResetFile()
- // Desc: Resets the internal m_ck pointer so reading starts from the
- // beginning of the file again
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::ResetFile()
- {
- if( m_bIsReadingFromMemory )
- {
- m_pbDataCur = m_pbData;
- }
- else
- {
- if( m_hmmio == NULL )
- return CO_E_NOTINITIALIZED;
- if( m_dwFlags == WAVEFILE_READ )
- {
- // Seek to the data
- if( -1 == mmioSeek( m_hmmio, m_ckRiff.dwDataOffset + sizeof( FOURCC ),
- SEEK_SET ) )
- return E_FAIL;
- // Search the input file for the 'data' chunk.
- m_ck.ckid = mmioFOURCC( 'd', 'a', 't', 'a' );
- if( 0 != mmioDescend( m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK ) )
- return E_FAIL;
- }
- else
- {
- // Create the 'data' chunk that holds the waveform samples.
- m_ck.ckid = mmioFOURCC( 'd', 'a', 't', 'a' );
- m_ck.cksize = 0;
- if( 0 != mmioCreateChunk( m_hmmio, &m_ck, 0 ) )
- return E_FAIL;
- if( 0 != mmioGetInfo( m_hmmio, &m_mmioinfoOut, 0 ) )
- return E_FAIL;
- }
- }
- return S_OK;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::Read()
- // Desc: Reads section of data from a wave file into pBuffer and returns
- // how much read in pdwSizeRead, reading not more than dwSizeToRead.
- // This uses m_ck to determine where to start reading from. So
- // subsequent calls will be continue where the last left off unless
- // Reset() is called.
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::Read( BYTE* pBuffer, DWORD dwSizeToRead, DWORD* pdwSizeRead )
- {
- if( m_bIsReadingFromMemory )
- {
- if( m_pbDataCur == NULL )
- return CO_E_NOTINITIALIZED;
- if( pdwSizeRead != NULL )
- *pdwSizeRead = 0;
- if( ( BYTE* )( m_pbDataCur + dwSizeToRead ) >
- ( BYTE* )( m_pbData + m_ulDataSize ) )
- {
- dwSizeToRead = m_ulDataSize - ( DWORD )( m_pbDataCur - m_pbData );
- }
- CopyMemory( pBuffer, m_pbDataCur, dwSizeToRead );
- if( pdwSizeRead != NULL )
- *pdwSizeRead = dwSizeToRead;
- return S_OK;
- }
- else
- {
- MMIOINFO mmioinfoIn; // current status of m_hmmio
- if( m_hmmio == NULL )
- return CO_E_NOTINITIALIZED;
- if( pBuffer == NULL || pdwSizeRead == NULL )
- return E_INVALIDARG;
- if( pdwSizeRead != NULL )
- *pdwSizeRead = 0;
- if( 0 != mmioGetInfo( m_hmmio, &mmioinfoIn, 0 ) )
- return E_FAIL;
- UINT cbDataIn = dwSizeToRead;
- if( cbDataIn > m_ck.cksize )
- cbDataIn = m_ck.cksize;
- m_ck.cksize -= cbDataIn;
- for( DWORD cT = 0; cT < cbDataIn; cT++ )
- {
- // Copy the bytes from the io to the buffer.
- if( mmioinfoIn.pchNext == mmioinfoIn.pchEndRead )
- {
- if( 0 != mmioAdvance( m_hmmio, &mmioinfoIn, MMIO_READ ) )
- return E_FAIL;
- if( mmioinfoIn.pchNext == mmioinfoIn.pchEndRead )
- return E_FAIL;
- }
- // Actual copy.
- *( ( BYTE* )pBuffer + cT ) = *( ( BYTE* )mmioinfoIn.pchNext );
- mmioinfoIn.pchNext++;
- }
- if( 0 != mmioSetInfo( m_hmmio, &mmioinfoIn, 0 ) )
- return E_FAIL;
- if( pdwSizeRead != NULL )
- *pdwSizeRead = cbDataIn;
- return S_OK;
- }
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::Close()
- // Desc: Closes the wave file
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::Close()
- {
- if( m_dwFlags == WAVEFILE_READ )
- {
- mmioClose( m_hmmio, 0 );
- m_hmmio = NULL;
- SAFE_DELETE_ARRAY( m_pResourceBuffer );
- }
- else
- {
- m_mmioinfoOut.dwFlags |= MMIO_DIRTY;
- if( m_hmmio == NULL )
- return CO_E_NOTINITIALIZED;
- if( 0 != mmioSetInfo( m_hmmio, &m_mmioinfoOut, 0 ) )
- return E_FAIL;
- // Ascend the output file out of the 'data' chunk -- this will cause
- // the chunk size of the 'data' chunk to be written.
- if( 0 != mmioAscend( m_hmmio, &m_ck, 0 ) )
- return E_FAIL;
- // Do this here instead...
- if( 0 != mmioAscend( m_hmmio, &m_ckRiff, 0 ) )
- return E_FAIL;
- mmioSeek( m_hmmio, 0, SEEK_SET );
- if( 0 != ( INT )mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 ) )
- return E_FAIL;
- 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 );
- }
- // Ascend the output file out of the 'RIFF' chunk -- this will cause
- // the chunk size of the 'RIFF' chunk to be written.
- if( 0 != mmioAscend( m_hmmio, &m_ckRiff, 0 ) )
- return E_FAIL;
- mmioClose( m_hmmio, 0 );
- m_hmmio = NULL;
- }
- return S_OK;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::WriteMMIO()
- // Desc: Support function for reading from a multimedia I/O stream
- // pwfxDest is the WAVEFORMATEX for this new wave file.
- // m_hmmio must be valid before calling. This function uses it to
- // update m_ckRiff, and m_ck.
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::WriteMMIO( WAVEFORMATEX* pwfxDest )
- {
- DWORD dwFactChunk; // Contains the actual fact chunk. Garbage until WaveCloseWriteFile.
- MMCKINFO ckOut1;
- dwFactChunk = ( DWORD )-1;
- // Create the output file RIFF chunk of form type 'WAVE'.
- m_ckRiff.fccType = mmioFOURCC( 'W', 'A', 'V', 'E' );
- m_ckRiff.cksize = 0;
- if( 0 != mmioCreateChunk( m_hmmio, &m_ckRiff, MMIO_CREATERIFF ) )
- return E_FAIL;
- // We are now descended into the 'RIFF' chunk we just created.
- // Now create the 'fmt ' chunk. Since we know the size of this chunk,
- // specify it in the MMCKINFO structure so MMIO doesn't have to seek
- // back and set the chunk size after ascending from the chunk.
- m_ck.ckid = mmioFOURCC( 'f', 'm', 't', ' ' );
- m_ck.cksize = sizeof( PCMWAVEFORMAT );
- if( 0 != mmioCreateChunk( m_hmmio, &m_ck, 0 ) )
- return E_FAIL;
- // Write the PCMWAVEFORMAT structure to the 'fmt ' chunk if its that type.
- if( pwfxDest->wFormatTag == WAVE_FORMAT_PCM )
- {
- if( mmioWrite( m_hmmio, ( HPSTR )pwfxDest,
- sizeof( PCMWAVEFORMAT ) ) != sizeof( PCMWAVEFORMAT ) )
- return E_FAIL;
- }
- else
- {
- // Write the variable length size.
- if( ( UINT )mmioWrite( m_hmmio, ( HPSTR )pwfxDest,
- sizeof( *pwfxDest ) + pwfxDest->cbSize ) !=
- ( sizeof( *pwfxDest ) + pwfxDest->cbSize ) )
- return E_FAIL;
- }
- // Ascend out of the 'fmt ' chunk, back into the 'RIFF' chunk.
- if( 0 != mmioAscend( m_hmmio, &m_ck, 0 ) )
- return E_FAIL;
- // Now create the fact chunk, not required for PCM but nice to have. This is filled
- // in when the close routine is called.
- ckOut1.ckid = mmioFOURCC( 'f', 'a', 'c', 't' );
- ckOut1.cksize = 0;
- if( 0 != mmioCreateChunk( m_hmmio, &ckOut1, 0 ) )
- return E_FAIL;
- if( mmioWrite( m_hmmio, ( HPSTR )&dwFactChunk, sizeof( dwFactChunk ) ) !=
- sizeof( dwFactChunk ) )
- return E_FAIL;
- // Now ascend out of the fact chunk...
- if( 0 != mmioAscend( m_hmmio, &ckOut1, 0 ) )
- return E_FAIL;
- return S_OK;
- }
- //-----------------------------------------------------------------------------
- // Name: CWaveFile::Write()
- // Desc: Writes data to the open wave file
- //-----------------------------------------------------------------------------
- HRESULT CWaveFile::Write( UINT nSizeToWrite, BYTE* pbSrcData, UINT* pnSizeWrote )
- {
- UINT cT;
- if( m_bIsReadingFromMemory )
- return E_NOTIMPL;
- if( m_hmmio == NULL )
- return CO_E_NOTINITIALIZED;
- if( pnSizeWrote == NULL || pbSrcData == NULL )
- return E_INVALIDARG;
- *pnSizeWrote = 0;
- for( cT = 0; cT < nSizeToWrite; cT++ )
- {
- if( m_mmioinfoOut.pchNext == m_mmioinfoOut.pchEndWrite )
- {
- m_mmioinfoOut.dwFlags |= MMIO_DIRTY;
- if( 0 != mmioAdvance( m_hmmio, &m_mmioinfoOut, MMIO_WRITE ) )
- return E_FAIL;
- }
- *( ( BYTE* )m_mmioinfoOut.pchNext ) = *( ( BYTE* )pbSrcData + cT );
- ( BYTE* )m_mmioinfoOut.pchNext++;
- ( *pnSizeWrote )++;
- }
- return S_OK;
- }