C语言使用libZPlay录制声音并写到文件的方法
本文实例讲述了C语言使用libZPlay录制声音并写到文件的方法。分享给大家供大家参考。具体实现方法如下：
/**
*Recordsamplesfromline-inandsavetoout.mp3
*
*/
#defineWIN32_LEAN_AND_MEAN
#include<windows.h>
#include<olectl.h>
#include<ole2.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<conio.h>
#include<dos.h>
#include<conio.h>
#include"../include/libzplay.h"
usingnamespacelibZPlay;
ZPlay*player;
intnRate=100;
intnPitch=100;
intnTempo=100;
intfCenterCut=0;
intfSideCut=0;
intfMixChannels=0;
intlVolume=100;
intrVolume=100;
intfPause=0;
intfEcho=0;
intfEq=0;
intfReverse=0;
TStreamStatusstatus;
TStreamTimepos;
intmain(intargc,char**argv)
{
//clearscreen
system("CLS");
//createclassinstance
player=CreateZPlay();
//chekifwehaveclassinstance
if(player==0)
{
printf("Error:Can'tcreateclassinstance!\nPresskeytoexit.\n");
getch();
return0;
}
//getlibraryversion
intver=player->GetVersion();
//checkifwehaveversion2.00andabove
if(ver<200)
{
printf("Error:Needlibraryversion2.00andabove!\nPresskeytoexit.\r\n");
getch();
player->Release();
return0;
}
//displayversioninfo
printf("libZPlayv.%i.%02i\r\n\r\n",ver/100,ver%100);
printf("x:play\tj:fadeout\ti:sidecut\td:pitchdown\r\n"
"c:pause\tk:fadein\to:centercut\tf:pitchup\r\n"
"v:stop\tl:loop\tn:volumedown\tg:tempodown\r\n"
"y:rew\tp:equalizer\tm:volumeup\th:tempoup\r\n"
"b:fwd\te:echo\ta:ratedown\r\n"
"r:reverse\tt:channelmix\ts:rateup\tq:quit\r\n\r\n");
//openwaveinusingLineIn
if(player->OpenFile("wavein://src=line;volume=50;",sfAutodetect)==0)
{
printf("Error:%s\nPresskeytoexit.\r\n",player->GetError());
getch();
player->Release();
return0;
}
//setwaveoutputtodiskfile,mp3encoding
if(player->SetWaveOutFile("out.mp3",sfMp3,1)==0)
{
printf("Error:%s\nPresskeytoexit.\r\n",player->GetError());
getch();
player->Release();
return0;
}
//getstreaminfo
TStreamInfopInfo;
player->GetStreamInfo(&pInfo);
//displayinfoaboutstream
char*sVbr="CBR";
if(pInfo.VBR)
sVbr="VBR";
printf("\r\n%s%iHz%sChannel:%uLength:%02i:%02i:%02i:%02i\r\n\r\n",
pInfo.Description,
pInfo.SamplingRate,
sVbr,
pInfo.ChannelNumber,
pInfo.Length.hms.hour,
pInfo.Length.hms.minute,
pInfo.Length.hms.second,
pInfo.Length.hms.millisecond);
printf("Status|kbps|POS:|Echo|Equ|Cut|Fade|Rev|Rate|Pitch|Tempo|Vol|Loop|Chmix|\r\n");
//startplaying
if(player->Play()==0)
{
printf("Error:%s\nPresskeytoexit.\r\n",player->GetError());
player->Release();//deleteZPlayclass
return0;
}
while(1)
{
//getcurrentstatus
player->GetStatus(&status);
char*st=0;
if(status.fPlay)
st="Play";
elseif(status.fPause)
st="Pause";
else
st="Stop";
//getcurrentposition
player->GetPosition(&pos);
printf("%s%04i%02i:%02i:%02i%i%i%i%i%i%03i%03i%03i%03i%i%i\r",
st,
player->GetBitrate(0),
pos.hms.hour,
pos.hms.minute,
pos.hms.second,
status.fEcho,
status.fEqualizer,
status.fVocalCut,
status.fSlideVolume,
status.fReverse,
player->GetRate(),
player->GetPitch(),
player->GetTempo(),
lVolume,
status.nLoop,
fMixChannels
);
if(kbhit())
{
inta=getch();
switch(a)
{
case'i'://sidecut
fSideCut=!fSideCut;
player->StereoCut(fSideCut,1,0);
fCenterCut=0;
break;
case'o'://center
fCenterCut=!fCenterCut;
player->StereoCut(fCenterCut,0,0);
fSideCut=0;
break;
case's'://higherrate
nRate+=5;
player->SetRate(nRate);
break;
case'a'://lowerrate
nRate-=5;
if(nRate<0)
nRate=0;
player->SetRate(nRate);
break;
case'd'://lowerpitch
nPitch-=5;
if(nPitch<0)
nPitch=0;
player->SetPitch(nPitch);
break;
case'f'://higherpitch
nPitch+=5;
player->SetPitch(nPitch);
break;
case'g'://lowertempo
nTempo-=5;
if(nTempo<0)
nTempo=0;
player->SetTempo(nTempo);
break;
case'h'://highertempo
nTempo+=5;
player->SetTempo(nTempo);
break;
case'r'://reversemode
fReverse=!fReverse;
if(player->ReverseMode(fReverse)==0)
{
printf("Error:%s\n",player->GetError());
fReverse=0;
}
break;
case'p'://enableordisableequalizer
{
fEq=!fEq;
player->EnableEqualizer(fEq);
if(fEq)
{
player->SetEqualizerPreampGain(-100000);
player->SetEqualizerBandGain(0,104000);
player->SetEqualizerBandGain(1,104000);
player->SetEqualizerBandGain(2,104000);
}
}
break;
case'l'://playloop
{
TStreamTimepCurrentTime;
player->GetPosition(&pCurrentTime);
TStreamTimepEndTime;
pEndTime.ms=pCurrentTime.ms+5000;
player->PlayLoop(tfMillisecond,&pCurrentTime,tfMillisecond,&pEndTime,5,1);
}
break;
case'j'://fadeoutvolume
{
TStreamTimestart;
TStreamTimeend;
player->GetPosition(&start);
end.sec=start.sec+5;
player->SlideVolume(tfSecond,&start,100,100,tfSecond,&end,0,0);
}
break;
case'k'://fadeinvolume
{
TStreamTimestart;
player->GetPosition(&start);
TStreamTimeend;
end.sec=start.sec+5;
player->SlideVolume(tfSecond,&start,0,0,tfSecond,&end,100,100);
}
break;
case'e'://enableecho
{
fEcho=!fEcho;
player->EnableEcho(fEcho);
}
break;
case'x'://play
if(player->Play()==0)
printf("Err:%s\n",player->GetError());
fPause=0;
break;
case'v'://stop
player->Stop();
fPause=0;
break;
case'c'://pause
if(fPause)
{
player->Resume();
fPause=0;
}
else
{
player->Pause();
fPause=1;
}
break;
case'y'://jumpback5seconds
{
TStreamTimepTime;
pTime.sec=5;
player->Seek(tfSecond,&pTime,smFromCurrentBackward);
}
break;
case'b'://jumpforward5seconds
{
TStreamTimepTime;
pTime.sec=5;
player->Seek(tfSecond,&pTime,smFromCurrentForward);
}
break;
case't':
{
//mixstereochannelstomono
fMixChannels=!fMixChannels;
player->MixChannels(fMixChannels,50,50);
}
break;
case'n'://volumedown
if(lVolume>=5)
lVolume-=5;
if(rVolume>=5)
rVolume-=5;
player->SetMasterVolume(lVolume,rVolume);
break;
case'm'://volumeup
if(lVolume<=95)
lVolume+=5;
if(rVolume<=95)
rVolume+=5;
player->SetMasterVolume(lVolume,rVolume);
break;
case'q':
case'Q':
player->Release();
return0;
}
}
Sleep(50);
}
}
希望本文所述对大家的C语言程序设计有所帮助。