VLC添加水印

Name: LibVLC control API
Description: VLC media player external control library
Version: 2.1.3

参照：https://stackoverflow.com/questions/15992874/logo-appears-for-only-a-second-and-then-disappears

http://blog.csdn.net/myaccella/article/details/7027962?locationNum=8

QWidget *m_widgetPlayer;

libvlc_media_player_t *mp;
libvlc_instance_t * inst;

libvlc_media_t *m;

//preparation of the vlc command
QString pluginDir = QString("--plugin-path=") + QCoreApplication::applicationDirPath() + QString("/plugins/");

const char * const vlc_args[] = {
"-I", "dummy", /* Don't use any interface */
//"--sub-filter=logo{file=c:\mediaport.png}:rss{urls=http://www.bbc.co.uk/persian/index.xml,length=120,size=23,title=0,speed=300000,x=-10,y=-30,position=8}",
//"--sub-filter=logo{file=dummy}",
//"--no-rss-images",
"--sub-filter=logo",//必须要设置
"--verbose", "0",
//"--verbose-objects=+filter",
//"-vvv",
//"--sout=#duplicate{dst=std{access=mmsh,mux=asfh,dst=0.0.0.0:8080},dst=display}",
"--ignore-config",
//"--loop",
//"--repeat",
//"-R",
"--no-video-title-show",
//"--network-caching 20000",
//":mmsh-caching=20000",
pluginDir.toAscii()
};

int vlc_argc = sizeof(vlc_args) / sizeof(*vlc_args);

inst = libvlc_new(vlc_argc, vlc_args);

m = libvlc_media_new_path (inst, "cuc_ieschool.flv");
mp = libvlc_media_player_new_from_media (m);

libvlc_media_release (m);

libvlc_media_player_set_hwnd (mp,winId);

int x=libvlc_media_player_play (mp);

connect(m_pbtPlay,SIGNAL(clicked()),this, SLOT(slot_FullScreen()));

Sleep(1000);//必须要设置

libvlc_video_set_logo_string(mp,libvlc_logo_file,"c:\audio.png");//Logo 文件名
libvlc_video_set_logo_int(mp,libvlc_logo_x,0);  //logo的 X 坐标。
libvlc_video_set_logo_int(mp,libvlc_logo_y,0); // logo的 Y 坐标。
//libvlc_video_set_logo_int(mp,libvlc_logo_delay , 20);//标志的间隔图像时间为毫秒,图像显示间隔时间 0 - 60000 毫秒。
libvlc_video_set_logo_int(mp,libvlc_logo_repeat, -1); // 标志logo的循环,  标志动画的循环数量。-1 = 继续, 0 = 关闭
libvlc_video_set_logo_int(mp,libvlc_logo_opacity,122); // logo 透明度 (数值介于 0(完全透明) 与 255(完全不透明)
//libvlc_video_set_logo_int(mp,libvlc_logo_position,0);//1 (左), 2 (右), 4 (顶部), 8 (底部), 5 (左上), 6 (右上), 9 (左下), 10 (右下),您也可以混合使用这些值，例如 6=4+2
          表示右上)。

libvlc_video_set_logo_int(mp,libvlc_logo_enable, 1);//设置允许添加logo