// Mixer.cpp: implementation of the CMixer class.
//
//#include "stdwx.h"
#include "Mixer.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CMixer::CMixer()
{
m_VolRange = 100;
}
CMixer::~CMixer()
{
}
CMixer::CMixer(const int VolRange)
{
m_VolRange = VolRange;
}
//----------------------------设定音量---------------------------------------
bool CMixer::GetVolumeControl(HMIXER hmixer ,long componentType,long ctrlType,MIXERCONTROL* mxc)
{
MIXERLINECONTROLS mxlc;
MIXERLINE mxl;
bool exist = false;
mxl.cbStruct = sizeof(mxl);
mxl.dwComponentType = componentType;
if (componentType == MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE)
{//获取录音麦克风设备
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_WAVEIN;
// 得到录制总线中的连接数
mixerGetLineInfo( (HMIXEROBJ)hmixer, &mxl,
MIXER_OBJECTF_HMIXER | MIXER_GETLINEINFOF_COMPONENTTYPE );
// 将连接数保存
DWORD dwConnections = mxl.cConnections;
// 准备获取麦克风设备的ID
DWORD dwLineID = 0;
for ( DWORD i = 0; i < dwConnections; i++ )
{
// 枚举每一个设备，当Source的ID等于当前的迭代记数
mxl.dwSource = i;
// 根据SourceID获得连接的信息
MMRESULT mr = mixerGetLineInfo( (HMIXEROBJ)hmixer, &mxl,
MIXER_OBJECTF_HMIXER | MIXER_GETLINEINFOF_SOURCE );
// 判断函数执行错误
if ( mr != 0 )
{
break;
}
// 如果当前设备类型是麦克风，则跳出循环。
if ( mxl.dwComponentType ==
MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE )
{
exist = true;
break;
}
}
}else if(!mixerGetLineInfo((HMIXEROBJ)hmixer, &mxl, MIXER_GETLINEINFOF_COMPONENTTYPE))
{
exist = true;
}
if (exist)
{
mxlc.cbStruct = sizeof(mxlc);
mxlc.dwLineID = mxl.dwLineID;
mxlc.dwControlType = ctrlType;
mxlc.cControls = 1;
mxlc.cbmxctrl = sizeof(MIXERCONTROL);
mxlc.pamxctrl = mxc;
if(mixerGetLineControls((HMIXEROBJ)hmixer,&mxlc,MIXER_GETLINECONTROLSF_ONEBYTYPE))
return 0;
else
return 1;
}
return 0;
}
//---------------------------------------------------------------------------
long CMixer::GetMuteValue(HMIXER hmixer ,MIXERCONTROL *mxc)
{
MIXERCONTROLDETAILS mxcd;
MIXERCONTROLDETAILS_BOOLEAN mxcdMute;
mxcd.hwndOwner = 0;
mxcd.cbStruct = sizeof(mxcd);
mxcd.dwControlID = mxc->dwControlID;
mxcd.cbDetails = sizeof(mxcdMute);
mxcd.paDetails = &mxcdMute;
mxcd.cChannels = 1;
mxcd.cMultipleItems = 0;
if (mixerGetControlDetails((HMIXEROBJ)hmixer, &mxcd,MIXER_OBJECTF_HMIXER|MIXER_GETCONTROLDETAILSF_VALUE))
return -1;
return mxcdMute.fValue;
}
//---------------------------------------------------------------------------
unsigned CMixer::GetVolumeValue(HMIXER hmixer ,MIXERCONTROL *mxc)
{
MIXERCONTROLDETAILS mxcd;
MIXERCONTROLDETAILS_UNSIGNED vol;
vol.dwValue=0;
mxcd.hwndOwner = 0;
mxcd.cbStruct = sizeof(mxcd);
mxcd.dwControlID = mxc->dwControlID;
mxcd.cbDetails = sizeof(vol);
mxcd.paDetails = &vol;
mxcd.cChannels = 1;
if(mixerGetControlDetails((HMIXEROBJ)hmixer, &mxcd, MIXER_OBJECTF_HMIXER|MIXER_GETCONTROLDETAILSF_VALUE))
return -1;
return vol.dwValue;
}
//---------------------------------------------------------------------------
bool CMixer::SetMuteValue(HMIXER hmixer ,MIXERCONTROL *mxc, bool mute)
{
MIXERCONTROLDETAILS mxcd;
MIXERCONTROLDETAILS_BOOLEAN mxcdMute;
mxcdMute.fValue=mute;
mxcd.hwndOwner = 0;
mxcd.dwControlID = mxc->dwControlID;
mxcd.cbStruct = sizeof(mxcd);
mxcd.cbDetails = sizeof(mxcdMute);
mxcd.paDetails = &mxcdMute;
mxcd.cChannels = 1;
mxcd.cMultipleItems = 0;
if (mixerSetControlDetails((HMIXEROBJ)hmixer, &mxcd, MIXER_OBJECTF_HMIXER|MIXER_SETCONTROLDETAILSF_VALUE))
return 0;
return 1;
}
//---------------------------------------------------------------------------
bool CMixer::SetVolumeValue(HMIXER hmixer ,MIXERCONTROL *mxc, long volume)
{
MIXERCONTROLDETAILS mxcd;
MIXERCONTROLDETAILS_UNSIGNED vol;
vol.dwValue = volume;
mxcd.hwndOwner = 0;
mxcd.dwControlID = mxc->dwControlID;
mxcd.cbStruct = sizeof(mxcd);
mxcd.cbDetails = sizeof(vol);
mxcd.paDetails = &vol;
mxcd.cChannels = 1;
if(mixerSetControlDetails((HMIXEROBJ)hmixer, &mxcd, MIXER_OBJECTF_HMIXER|MIXER_SETCONTROLDETAILSF_VALUE))
return 0;
return 1;
}
//---------------------------------------------------------------------------
unsigned /*WINAPI */CMixer::GetVolume(MixerDeice dev)//得到设备的音量dev=0主音量，1WAVE ,2MIDI ,3 LINE IN
{
long device;
unsigned rt=0;
MIXERCONTROL volCtrl;
HMIXER hmixer;
switch (dev)
{
case WAVEOUT:
device=MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT; break;
case SYNTHESIZER:
device=MIXERLINE_COMPONENTTYPE_SRC_SYNTHESIZER; break;
case MICROPHONE:
// device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break; // cd 音量
device=MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE; break; //麦克风音量
// device=MIXERLINE_COMPONENTTYPE_SRC_LINE; break; //PC 扬声器音量
//device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break;
default:
device=MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
}
if(mixerOpen(&hmixer, 0, 0, 0, 0)) return 0;
if(!GetVolumeControl(hmixer,device,MIXERCONTROL_CONTROLTYPE_VOLUME,&volCtrl))
{
mixerClose(hmixer);
return 0;
}
rt=GetVolumeValue(hmixer,&volCtrl)*m_VolRange /volCtrl.Bounds.lMaximum;
mixerClose(hmixer);
return rt;
}
//---------------------------------------------------------------------------
bool /*WINAPI*/ CMixer::SetVolume(MixerDeice dev,long vol)//设置设备的音量
{
// dev =0,1,2 分别表示主音量,波形,MIDI ,LINE IN
// vol=0-m_VolRange 表示音量的大小 , 设置与返回音量的值用的是百分比，即音量从0 - m_VolRange ，而不是设备的绝对值
// retrun false 表示设置音量的大小的操作不成功
// retrun true 表示设置音量的大小的操作成功
long device;
bool rc=false;
MIXERCONTROL volCtrl;
HMIXER hmixer;
switch (dev)
{
case WAVEOUT:
device=MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT; break;
case SYNTHESIZER:
device=MIXERLINE_COMPONENTTYPE_SRC_SYNTHESIZER; break;
case MICROPHONE:
// device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break; // cd 音量
device=MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE; break; //麦克风音量
// device=MIXERLINE_COMPONENTTYPE_SRC_LINE; break; //PC 扬声器音量
//device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break;
default:
device=MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
}
if(mixerOpen(&hmixer, 0, 0, 0, 0)) return 0;
if(GetVolumeControl(hmixer,device,MIXERCONTROL_CONTROLTYPE_VOLUME,&volCtrl))
{
vol=vol*volCtrl.Bounds.lMaximum/m_VolRange ;
if(SetVolumeValue(hmixer,&volCtrl,vol))
rc=true;
}
mixerClose(hmixer);
return rc;
}
//---------------------------------------------------------------------------
bool /*WINAPI*/ CMixer::SetMute(MixerDeice dev,/*long*/bool vol)//设置设备静音
{
// dev =0,1,2 分别表示主音量,波形,MIDI ,LINE IN
// vol=0,1 分别表示取消静音,设置静音
// retrun false 表示取消或设置静音操作不成功
// retrun true 表示取消或设置静音操作成功
long device;
bool rc=false;
MIXERCONTROL volCtrl;
HMIXER hmixer;
switch (dev)
{
case WAVEOUT:
device=MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT; break;
case SYNTHESIZER:
device=MIXERLINE_COMPONENTTYPE_SRC_SYNTHESIZER; break;
case MICROPHONE:
// device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break; // cd 音量
device=MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE; break; //麦克风音量
// device=MIXERLINE_COMPONENTTYPE_SRC_LINE; break; //PC 扬声器音量
//device=MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC; break;
default:
device=MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
}
if(mixerOpen(&hmixer, 0, 0, 0, 0)) return 0;
if(GetVolume
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