MeidaStreamTrack是媒体流的一部分
//它的两种状态分别是工作状态和结束状态
public enum State { LIVE, ENDED }
// 构造方法，在创建MediaStream的时候，需要传入一个nativeTrack
final long nativeTrack;
public MediaStreamTrack(long nativeTrack) {
this.nativeTrack = nativeTrack;
}
//这里面的方法和native层的方法是一一对应的
//获取Id
public String id() {
return nativeId(nativeTrack);
}
//获取类别
public String kind() {
return nativeKind(nativeTrack);
}
//获取是否被mute
public boolean enabled() {
return nativeEnabled(nativeTrack);
}
//mute或者取消
public boolean setEnabled(boolean enable) {
return nativeSetEnabled(nativeTrack, enable);
}
//获取当前的状态
public State state() {
return nativeState(nativeTrack);
}
//释放掉
public void dispose() {
free(nativeTrack);
}
private static native String nativeId(long nativeTrack);
private static native String nativeKind(long nativeTrack);
private static native boolean nativeEnabled(long nativeTrack);
private static native boolean nativeSetEnabled(long nativeTrack, boolean enabled);
private static native State nativeState(long nativeTrack);
private static native void free(long nativeTrack);
