audio - C或Python中的声音同步

Question

我想播放声音，并有某种方式可靠地告诉您到目前为止已播放了多少声音。
我看过几个声音库，但它们的文档严重不足，似乎只导出了“PlaySound，没有问题”例程。

即，我想要这个:

a = Sound(filename)  
PlaySound(a);  
while true:  
    print a.miliseconds_elapsed, a.length  
    sleep(1)  

首选C，C++或Python解决方案。
谢谢。

Answer 1

我使用 BASS音频库(http://www.un4seen.com/)

BASS is an audio library for use in Windows and Mac OSX software. Its purpose is to provide developers with powerful and efficient sample, stream (MP3, MP2, MP1, OGG, WAV, AIFF, custom generated, and more via add-ons), MOD music (XM, IT, S3M, MOD, MTM, UMX), MO3 music (MP3/OGG compressed MODs), and recording functions. All in a tiny DLL, under 100KB in size.*

使用BASS的C程序非常简单

HSTREAM str;
BASS_Init(-1,44100,0,0,NULL);
BASS_Start();
str=BASS_StreamCreateFile(FALSE,filename,0,0,0);
BASS_ChannelPlay(str,FALSE);
while (BASS_ChannelIsActive(str)==BASS_ACTIVE_PLAYING) {
  pos=BASS_ChannelGetPosition(str,BASS_POS_BYTE);
}
BASS_Stop();
BASS_Free();