[源代码]系统音量控制

因为网上关于API控制系统音量的资料都是C++的，于是我先用C++写了个。这个程序能设置系统的当前音量。有时间用汇编再写一遍，主要里面的用到的结构定义很繁琐。一份好的参考资料：

http://202.38.64.13/personal/cs011/csli/vc_note/MIXER.htm

PS：无语掉。程序拿到Win7后说不行。在CSDN上查说，Vista之后，设置全局的音量的话用ISimpleAudioVolume::SetMasterVolume 。。。。

http://topic.csdn.net/u/20100930/18/f6ad08c7-43e6-4c23-a70f-3c8a3cd4f06c.html

无奈说下面是XP版控制音量：

#include<stdio.h>#include<windows.h>#include<mmsystem.h>#pragma comment(lib,"Winmm.lib")void main(){        HMIXER hMixer; //mixer设备的句柄        UINT uMxId; //设备ID        MMRESULT mr; //返回类型        MIXERLINE mxl;        MIXERCONTROL mxc;        MIXERLINECONTROLS mxlc;        MIXERCONTROLDETAILS mxcd;        MIXERCONTROLDETAILS_UNSIGNED mxcd_u;        //检测系统是否有设备        printf("设备数量：/t%d/n",mixerGetNumDevs());        if(mixerGetNumDevs() == 0) return;        //得到设备句柄        printf("请输入设备ID：/t");        scanf("%d",&uMxId);        mr = mixerOpen(&hMixer,uMxId,0,0,0);        if(mr != MMSYSERR_NOERROR)        {                printf("Error 00: %08X/n",mr);                getch();                return;        }        //获取线路信息        mxl.cbStruct = sizeof(MIXERLINE);        mxl.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;        mr = mixerGetLineInfo((HMIXEROBJ)hMixer,&mxl,MIXER_GETLINEINFOF_COMPONENTTYPE|MIXER_OBJECTF_HMIXER);        if(mr != MMSYSERR_NOERROR)        if(mr != MMSYSERR_NOERROR)        {                printf("Error 01: %08X/n",mr);                getch();                return;        }        //        mxlc.cbStruct = sizeof(MIXERLINECONTROLS);        mxlc.dwLineID = mxl.dwLineID;        mxlc.cControls = mxl.cControls;        mxlc.cbmxctrl = sizeof(MIXERCONTROL);        mxlc.pamxctrl = (LPMIXERCONTROL)&mxc;        mr = mixerGetLineControls((HMIXEROBJ)hMixer,&mxlc,MIXER_GETLINECONTROLSF_ALL|MIXER_OBJECTF_HMIXER);        if(mr != MMSYSERR_NOERROR)        {                printf("Error 02: %08X/n",mr);                getch();                return;        }        //获取音量        mxcd.cbStruct = sizeof(MIXERCONTROLDETAILS);        mxcd.dwControlID = mxc.dwControlID;        mxcd.cChannels = MIXERCONTROL_CONTROLF_UNIFORM; //统一控制多个声道        mxcd.cMultipleItems =mxc.cMultipleItems;        mxcd.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);        mxcd.paDetails = &mxcd_u;        mr = mixerGetControlDetails((HMIXEROBJ)hMixer,&mxcd,MIXER_GETCONTROLDETAILSF_VALUE|MIXER_OBJECTF_HMIXER);        if(mr != MMSYSERR_NOERROR)        {                printf("Error 03: %08X/n",mr);                getch();                return;        }        printf("当前音量：/t%d/n",mxcd_u.dwValue);        //设置音量        printf("请输入新的音量：");        scanf("%d",&mxcd_u.dwValue);        mr = mixerSetControlDetails((HMIXEROBJ)hMixer,&mxcd,MIXER_GETCONTROLDETAILSF_VALUE|MIXER_OBJECTF_HMIXER);        if(mr != MMSYSERR_NOERROR)        {                printf("Error 04: %08X/n",mr);                getch();                return;        }        //释放设备句柄        mr = mixerClose(hMixer);        if(mr != MMSYSERR_NOERROR)        {                printf("Error 05: %08X/n",mr);                getch();                return;        }}

Win7版：

参考资料：

http://msdn.microsoft.com/en-us/library/dd370892(v=VS.85).aspx

http://www.cnblogs.com/gingerjws/archive/2010/10/28/1863560.html

http://audacity.googlecode.com/svn-history/r10708/audacity-src/vendor/portaudio-v19/current/src/hostapi/wasapi/mingw-include/mmdeviceapi.h

http://www.portaudio.com/docs/v19-doxydocs/endpointvolume_8h-source.html

.386

.model flat,stdcall

option casemap:none

include e:/masm32/include/windows.inc

include e:/masm32/include/kernel32.inc

includelib e:/masm32/lib/kernel32.lib

include e:/masm32/include/user32.inc

includelib e:/masm32/lib/user32.lib

include e:/masm32/include/ole32.inc

includelib e:/masm32/lib/ole32.lib

eRender equ 0

eConsole equ 0

.data?

lpEnumerator dd ?

lpDevice dd ?

lpAudioEndpointVolume dd ?

fLevel dd ?

bMute db ?

szBuffer db 32 dup (?)

.data

;CLSID_MMDeviceEnumerator = {BCDE0395-E52F-467C-8E3D-C4579291692E}

;IID_IMMDeviceEnumerator = {A95664D2-9614-4F35-A746-DE8DB63617E6}

;IID_IAudioEndpointVolume = {5CDF2C82-841E-4546-9722-0CF74078229A}

CLSID_MMDeviceEnumerator GUID <0BCDE0395h,0E52Fh,467Ch,<8Eh,3Dh,0C4h,57h,92h,91h,69h,2Eh>>

IID_IMMDeviceEnumerator GUID <0A95664D2h,9614h,4F35h,<0A7h,46h,0DEh,8Dh,0B6h,36h,17h,0E6h>>

IID_IAudioEndpointVolume GUID <5CDF2C82h,841Eh,4546h,<97h,22h,0Ch,0F7h,40h,78h,22h,9Ah>>

.code

_MsgBoxHex proc uses ebx edi esi,_dwInt

local @szBuffer[9]:byte

local @szFormat[5]:byte

push eax

mov @szFormat[0],'%'

mov @szFormat[1],'0'

mov @szFormat[2],'8'

mov @szFormat[3],'X'

mov @szFormat[4],0

invoke wsprintf,addr @szBuffer,addr @szFormat,_dwInt

invoke MessageBox,NULL,addr @szBuffer,addr @szFormat,MB_OK

pop eax

ret

_MsgBoxHex endp

start:

invoke CoInitialize,NULL

invoke CoCreateInstance,offset CLSID_MMDeviceEnumerator,NULL,/

CLSCTX_INPROC_SERVER,offset IID_IMMDeviceEnumerator,/

offset lpEnumerator

;Enumerator.GetDefaultAudioEndpoint方法

mov esi,lpEnumerator

mov esi,[esi]

push offset lpDevice

push eConsole

push eRender

push lpEnumerator

call dword ptr [esi+16]

;Device.Activate方法

mov esi,lpDevice

mov esi,[esi]

push offset lpAudioEndpointVolume

push NULL

push CLSCTX_ALL

push offset IID_IAudioEndpointVolume

push lpDevice

call dword ptr [esi+12]

;AudioEndpointVolume.GetMasterVolumeLevelScalar方法，获取音量大小

mov esi,lpAudioEndpointVolume

mov esi,[esi]

push offset fLevel

push lpAudioEndpointVolume

call dword ptr [esi+36]

;显示fLevelDB在内存中的浮点型数据

invoke _MsgBoxHex,fLevel

;此处将令fLevel为3F333333h,即0.7

mov fLevel,3F333333h

;AudioEndpointVolume.SetMasterVolumeLevelScalar方法，设置音量大小，设置范围0～1

mov esi,lpAudioEndpointVolume

mov esi,[esi]

push NULL

push fLevel

push lpAudioEndpointVolume

call dword ptr [esi+28]

;AudioEndpointVolume.GetMute方法，获取静音状态

;mov esi,lpAudioEndpointVolume

;mov esi,[esi]

;push offset bMute

;push lpAudioEndpointVolume

;call dword ptr [esi+60]

;AudioEndpointVolume.SetMute方法，更改静音状态

;mov esi,lpAudioEndpointVolume

;mov esi,[esi]

;push NULL

;not bMute

;movzx eax,bMute

;push eax

;push lpAudioEndpointVolume

;call dword ptr [esi+56]

;Release方法

mov esi,lpAudioEndpointVolume

mov esi,[esi]

push lpAudioEndpointVolume

call dword ptr [esi+8]

mov esi,lpDevice

mov esi,[esi]

push lpDevice

call dword ptr [esi+8]

mov esi,lpEnumerator

mov esi,[esi]

push lpEnumerator

call dword ptr [esi+8]

invoke CoUninitialize

invoke ExitProcess,NULL

end start