菜鸟问题：如何录制声音到缓冲区中？

[liuxiaowei]

VC++

[lhuchong]

int Record(const char* buffer,int* bufferlen)
{
MMRESULT mmResult;

char soundbuffer[SIZE];

/* write */
LPWAVEHDR header = (WAVEHDR*)malloc(sizeof(WAVEHDR));



memset(header, 0, sizeof(WAVEHDR));

header->lpData = (char *)soundbuffer;
header->dwBufferLength = SIZE;
header->dwFlags = WHDR_DONE;
header->dwUser = (DWORD)0;

mmResult = waveInPrepareHeader(hWaveIn, header, sizeof(WAVEHDR));

mmResult = waveInAddBuffer( hWaveIn, header, sizeof(WAVEHDR));
if ( mmResult != MMSYSERR_NOERROR){
puts("waveInAddBuffer Error");
return -1;
}
//MMSYSERR_INVALHANDLE
mmResult = waveInStart( hWaveIn);
if(mmResult != MMSYSERR_NOERROR)
{
puts("waveInStart Error");
return -1;
}

Sleep(1000);

mmResult = waveInStop( hWaveIn);
if(mmResult != MMSYSERR_NOERROR)
{
puts("waveInStop Error");
return -1;
}



memcpy( (void*)buffer ,header->lpData, header->dwBytesRecorded);

*bufferlen = header->dwBytesRecorded;

if( waveInUnprepareHeader( hWaveIn, header, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)

{
puts("waveInUnprepareHeader Error");
return -1;
}

return 0;
}

[Jneu]

UP

[liuxiaowei]

请问lhuchong(令狐虫)大虾
缓冲区大小有限制吗？