Vista 下的录音问题

[xt_jat]

有哪位做个在Vista下录音的程序吗？ 就是把当前计算机播放的声音录制下来。
希望能给个思路，当然有一些例子代码更是感谢。以前在xp下的代码工作不正常了。感觉有些原理不一样了

[wgm001]

帮顶帮顶！

[lucian2007]

采集卡是普通的声卡设备么？？还是比较特殊的采集卡。

[duyanbin_sy]

我做过MIC的录音,XP和VISTA没有差别啊.
是不是声卡类型不一样啊,设备的ID变了.

[xt_jat]

普通的声卡

[xt_jat]

好像问题出在选择声卡的录音设备，不知道在vista下怎么选择

[duyanbin_sy]

用什么函数进行录音?WaveIn类的吗？

[wj59]

vista audio 的编程模式不同于以往,原来的vfw 和 directx 代码虽然可用,但有问题;给你个连接参考一下http://www.ieee.org.cn/dispbbs.asp?boardID=61&ID=49623

[scq2099yt]

ding

[xt_jat]

void SelectMic()
{
// Open the mixer device
HMIXER hmx;
mixerOpen(&hmx, 0, 0, 0, 0);

// Get the line info for the wave in destination line
MIXERLINE mxl;
memset(&mxl, 0, sizeof(mxl)) ;
mxl.cbStruct = sizeof(mxl);
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
mixerGetLineInfo((HMIXEROBJ)hmx, &mxl,
MIXER_GETLINEINFOF_COMPONENTTYPE);

// Find a LIST control, if any, for the wave in line
LPMIXERCONTROL pmxctrl = (LPMIXERCONTROL)malloc(mxl.cControls * sizeof
MIXERCONTROL);
MIXERLINECONTROLS mxlctrl = {sizeof mxlctrl, mxl.dwLineID, 0,
mxl.cControls, sizeof MIXERCONTROL, pmxctrl};
mixerGetLineControls((HMIXEROBJ) hmx, &mxlctrl,
MIXER_GETLINECONTROLSF_ALL);

// Now walk through each control to find a type of LIST control. This
// can be either Mux, Single-select, Mixer or Multiple-select.
DWORD i;
for(i=0; i < mxl.cControls; i++)
if (MIXERCONTROL_CT_CLASS_LIST == (pmxctrl[i].dwControlType
&MIXERCONTROL_CT_CLASS_MASK))
break;
if (i < mxl.cControls) { // Found a LIST control
// Check if the LIST control is a Mux or Single-select type
BOOL bOneItemOnly = FALSE;
switch (pmxctrl[i].dwControlType) {
case MIXERCONTROL_CONTROLTYPE_MUX:
case MIXERCONTROL_CONTROLTYPE_SINGLESELECT:
bOneItemOnly = TRUE;
}

DWORD cChannels = mxl.cChannels, cMultipleItems = 0;
if (MIXERCONTROL_CONTROLF_UNIFORM & pmxctrl[i].fdwControl)
cChannels = 1;
if (MIXERCONTROL_CONTROLF_MULTIPLE & pmxctrl[i].fdwControl)
cMultipleItems = pmxctrl[i].cMultipleItems;

// Get the text description of each item
LPMIXERCONTROLDETAILS_LISTTEXT plisttext =
(LPMIXERCONTROLDETAILS_LISTTEXT)
malloc(cChannels * cMultipleItems * sizeof
MIXERCONTROLDETAILS_LISTTEXT);
MIXERCONTROLDETAILS mxcd = {sizeof(mxcd), pmxctrl[i].dwControlID,
cChannels,
(HWND)cMultipleItems, sizeof MIXERCONTROLDETAILS_LISTTEXT,
(LPVOID) plisttext};
mixerGetControlDetails((HMIXEROBJ)hmx, &mxcd,
MIXER_GETCONTROLDETAILSF_LISTTEXT);

// Now get the value for each item
LPMIXERCONTROLDETAILS_BOOLEAN plistbool =
(LPMIXERCONTROLDETAILS_BOOLEAN)
malloc(cChannels * cMultipleItems * sizeof
MIXERCONTROLDETAILS_BOOLEAN);
mxcd.cbDetails = sizeof MIXERCONTROLDETAILS_BOOLEAN;
mxcd.paDetails = plistbool;
mixerGetControlDetails((HMIXEROBJ)hmx, &mxcd,
MIXER_GETCONTROLDETAILSF_VALUE);

// Select the "Microphone" item
for (DWORD j=0; j<cMultipleItems; j = j + cChannels)
if (0 == strcmp(plisttext[j].szName, "Microphone"))
// Select it for both left and right channels
plistbool[j].fValue = plistbool[j+ cChannels - 1].fValue = 1;
else if (bOneItemOnly)
// Mux or Single-select allows only one item to be selected
// so clear other items as necessary
plistbool[j].fValue = plistbool[j+ cChannels - 1].fValue = 0;
// Now actually set the new values in
mixerSetControlDetails((HMIXEROBJ)hmx, &mxcd,
MIXER_GETCONTROLDETAILSF_VALUE);

free(pmxctrl);
free(plisttext);
free(plistbool);
}
else
free(pmxctrl);
mixerClose(hmx);
}

我用上面的代码选择录音设备，用MCI录音。
在xp下工作正常。在vista下，就没有声音了，不知道是为什么

[jixingzhong]

看看 ···

[duyanbin_sy]

准确的说不是你进行录音（录音应该用WAVEIN类的API），而是控制OS的当前录音设备（应该用MIXER类的API）。

从你的代码和错误现象上看VISTA的声卡类型是HDA的（高保真的）。
XP的设备是AC97的。。

设备类型不同，导致你的代码失效。

[duyanbin_sy]

实际上在VIST下已经没有选择MIC作为当前LINE的功能了.
MIC已经变成设备了,如果用MIC时需要取得MIC的设备号