LibSourcey 是跨平臺 C++11 模塊和類的集合，為開發(fā)人員提供了一個快速開發(fā)基于 p2p 和媒體流應(yīng)用程序的高性能網(wǎng)絡(luò)的庫。可以把它看作 libuv 與 FFmpeg，OpenCV 和 WebRTC 特性的高度結(jié)合，所有這些都具有 stl（C++標(biāo)準(zhǔn)庫）的易用性和可讀性。

使用 LibSourcey 一個很好的出發(fā)點是 PacketStream，它可用來創(chuàng)建用于管道，處理并輸出任意數(shù)據(jù)分組的動態(tài)委托鏈。分層分組處理器和動態(tài)功能的方法使得它能夠快速且容易地開發(fā)出復(fù)雜的數(shù)據(jù)處理應(yīng)用程序。

例如，下面的代碼將介紹如何捕捉實時攝像頭流，將其編碼為 H.264，并通過互聯(lián)網(wǎng)實時廣播它：

//?Create?a?PacketStream?to?pass?packets?from?the
//?input?device?captures?=>?encoder?=>?socket
PacketStream?stream;

//?Setup?the?encoder?options
av::EncoderOptions?options;
options.oformat?=?av::Format("MP4",?"mp4",
????av::VideoCodec("H.264",?"libx264",?400,?300,?25,?48000,?128000,?"yuv420p"),
????av::AudioCodec("AAC",?"libfdk_aac",?2,?44100,?64000,?"s16"));

//?Create?a?device?manager?instance?to?enumerate?system?devices
av::DeviceManager?devman;
av::Device?device;

//?Create?and?attach?the?default?video?capture
av::VideoCapture::Ptr?video;
if?(devman.getDefaultCamera(device))?{
????video.open(device.id,?640,?480,?30);
????video.getEncoderFormat(options.iformat);
????stream.attachSource(video,?true);
}

//?Create?and?attach?the?default?audio?capture
av::AudioCapture::Ptr?audio;
if?(devman.getDefaultMicrophone(device))?{
????audio.open(device.id,?2,?44100);
????audio.getEncoderFormat(options.iformat);
????stream.attachSource(audio,?true);
}

//?Create?and?attach?the?multiplex?encoder
av::MultiplexPacketEncoder::Ptr?encoder(options);
stream.attach(encoder);

//?Attach?the?output?net::Socket?instance?(instantiated?elsewhere)
//?to?broadcast?encoded?packets?over?the?network
stream.attach(socket);

//?Start?the?stream
//?This?method?call?will?start?the?device?captures?and?begin
//?pumping?encoded?media?into?the?output?socket
stream.start();