枚举DirectSound设备的问题

2009-08-03 11:52:48 111 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

DirectSound开发指南（1） 1DirectSound简介（Introduction to DirectSound）曾经学习过Directshow的开发，对于Dsound一直没有仔细的莱学习，以前只是知道Dsound是做音频开发的，我一直以为它和Dshow的结构体系差不多，经过仔细学习后，发现，其实他们完全两码事。闲话少说，下面我们看看DirectSound到底能帮我们做些什么。 1播放WAVE格式的音频文阅读详情

我有一个USB FM设备,设备名字"USB Audio Device".在XP和Vista系统中用下面方法都可以枚举到该设备,在Windows7中却枚举不到.请问还有什么方法?

DirectSoundCaptureEnumerate( (LPDSENUMCALLBACK)DSoundEnumCallback, m_combo_device );

INT_PTR CALLBACK DSoundEnumCallback( GUID* pGUID, LPCSTR strDesc, LPCSTR strDrvName,
VOID* pContext )
{
// Set aside static storage space for 20 audio drivers
static GUID AudioDriverGUIDs[20];
static DWORD dwAudioDriverIndex = 0;

GUID* pTemp = NULL;
if( pGUID )
{
if( dwAudioDriverIndex >= 20 )
return TRUE;

pTemp = &AudioDriverGUIDs[dwAudioDriverIndex++];
memcpy( pTemp, pGUID, sizeof(GUID) );
}
HWND hSoundDeviceCombo = (HWND)pContext;

// Add the string to the combo box
SendMessage( hSoundDeviceCombo, CB_ADDSTRING,
0, (LPARAM) (LPCTSTR) strDesc );
// Get the index of the string in the combo box
INT nIndex = (INT)SendMessage( hSoundDeviceCombo, CB_FINDSTRING,
0, (LPARAM) (LPCTSTR) strDesc );
// Set the item data to a pointer to the static guid stored in AudioDriverGUIDs
SendMessage( hSoundDeviceCombo, CB_SETITEMDATA, nIndex, (LPARAM) pTemp );
return TRUE;
}

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