200分 谁能告诉我我错哪了？！

[nonocast]

很简单的功能，我想放PCM

void CPlayPcmDlg::OnButton1()
{
// TODO: Add your control notification handler code here
pBuffer1 = new BYTE[16384];
memset(pBuffer1, 0, 16384);

memset(&waveformat, 0, sizeof(WAVEFORMATEX));
waveformat.wFormatTag = WAVE_FORMAT_PCM ;
waveformat.nChannels = 2 ;
waveformat.nSamplesPerSec = 48000;
waveformat.wBitsPerSample = 16 ;
waveformat.nBlockAlign = waveformat.nChannels * waveformat.wBitsPerSample / 8 ;
waveformat.nAvgBytesPerSec = 48000 * waveformat.nBlockAlign ;
waveformat.cbSize = 0 ;

if (waveOutOpen (&hWaveOut, WAVE_MAPPER, &waveformat, (DWORD)this->GetSafeHwnd(), 0, CALLBACK_WINDOW) != MMSYSERR_NOERROR)
{
return;
}

pWaveHdr1 = new WAVEHDR;
memset(pWaveHdr1, 0, sizeof(WAVEHDR));
pWaveHdr1->lpData = (char*)pBuffer1 ;
pWaveHdr1->dwBufferLength = 16384 ;
pWaveHdr1->dwBytesRecorded = 0 ;
pWaveHdr1->dwUser = 0 ;
pWaveHdr1->dwFlags = 0 ;
pWaveHdr1->dwLoops = 1 ;
pWaveHdr1->lpNext = NULL ;
pWaveHdr1->reserved = 0 ;

waveOutPrepareHeader (hWaveOut, pWaveHdr1, sizeof (WAVEHDR)) ;
}

LRESULT CPlayPcmDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// TODO: Add your specialized code here and/or call the base class
DWORD dwRead = 0;

switch(message) {
case MM_WOM_OPEN:
memset(pBuffer1, 0, 16384);
::ReadFile(hFile, pBuffer1, 16384, &dwRead, NULL);
waveOutWrite (hWaveOut, (PWAVEHDR) pWaveHdr1, sizeof (WAVEHDR)) ;
break;
case MM_WOM_DONE:
{
memset( ((PWAVEHDR) lParam)->lpData, 0, 16384);
::ReadFile(hFile, ((PWAVEHDR) lParam)->lpData, 16384, &dwRead, NULL);
waveOutWrite (hWaveOut, (PWAVEHDR) lParam, sizeof (WAVEHDR)) ;
break;
}
default:
break;
}
return CDialog::WindowProc(message, wParam, lParam);
}

[nonocast]

补充说明一下
我现在的代码能放
但声音很扭曲，非常慢
希望大家能帮我解决一下

[Peter_Chow]

高手! 太复杂了

[DentistryDoctor]

需要有一定的缓冲区。

[bobob]

1.声道是否正确?

2.
If wFormatTag is WAVE_FORMAT_PCM, then common values for nSamplesPerSec are 8.0 kHz, 11.025 kHz, 22.05 kHz, and 44.1 kHz.

你设置的太大了

[AthlonxpX86]

pBuffer1 = new BYTE[16384];
缓冲太小
waveformat.nSamplesPerSec = 48000;
你的PCM音源采样率是否是48000？声卡能支持吗？如果不能需要SRC重新采样以支持其他采样率
另外你这个好像没有回调线程，在回调线程中为设备准备缓冲区，至少3缓冲，否则会断断续续

[nonocast]

To DentistryDoctor
需要有一定的缓冲区?
什么意思？我现在能放，就是声音慢并且很扭曲

To bobob(静思--潜心研究PDF)
44.1kHz的我也试过，也是不行，声音也是有些抖，不过比48kHz好些

[nonocast]

44.1KHz可以了，难道API真的不支持48kHz
我郁闷啊

[carbon107]

http://www.codeproject.com/audio/lamer2000.asp
http://www.codeproject.com/audio/alexfmixer.asp

参考一下

[老夏Max]

不懂，学习ing！