Google Cast：如何在默认媒体播放器中显示元数据？

Question

我试图让我的 chrome 发送器应用程序将元数据发送到默认媒体接收器应用程序，但默认媒体接收器不显示元数据。我找不到文档或示例。有谁知道如何实施这个？下面的代码播放音频，但播放器不显示任何图像或其他元数据。

初始化：

 var sessionRequest = new chrome.cast.SessionRequest(chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID);
  var apiConfig = new chrome.cast.ApiConfig(sessionRequest,
    sessionListener,
    receiverListener);
  chrome.cast.initialize(apiConfig, onInitSuccess, onError);
  chrome.cast.requestSession(onRequestSessionSuccess, onLaunchError);

...

加载媒体

url = "url-to-media"
var mediaInfo = new chrome.cast.media.MediaInfo(url, 'audio/aac');
mediaInfo.metadata = new chrome.cast.media.MusicTrackMediaMetadata()
mediaInfo.metadata.albumName = 'This is the name of the album'
mediaInfo.metadata.artistName = 'This is the name of the artist'
mediaInfo.metadata.songName = 'This is the name of the song'
im = chrome.cast.Image('http://m1.behance.net/rendition/modules/575407/disp/822271229466847.png')
mediaInfo.metadata.images = new Array(im)
var request = new chrome.cast.media.LoadRequest(mediaInfo);
session.loadMedia(request,onMediaDiscovered.bind(this, 'loadMedia'), onMediaError())

Answer 1

尝试这个 -

mediaInfo.metadata.title = 'This is the name of the song';
mediaInfo.metadata.subtitle = 'This is the name of the artist';