Question

我正在尝试让我的chrome sender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。有谁知道如何实现这个？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

试试这个 -

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

Answer 2

我们刚刚发布了修复此问题的Cast扩展测试版。请参阅此声明：https://plus.google.com/+ShawnShen/posts/aVXSHyceNbR。

我还在github上添加了一个项目，它提供了示例代码：

https://github.com/googlecast/CastMedia-chrome

Answer 3

目前，默认媒体接收器应用程序接受某些元数据字段。详细规格如下：https://developers.google.com/cast/docs/reference/messages。

对于MusicTrackMediaMetaData类型，请务必将metadataType设置为3.以下代码段可用。

mediaInfo.metadata = new chrome.cast.media.MusicTrackMediaMetadata()
mediaInfo.metadata.metadataType = 3;
mediaInfo.metadata.title = 'This is the name of the title';
mediaInfo.metadata.albumArtist = 'This is the name of the album artist';
mediaInfo.metadata.artist = 'This is the name of the artist';
mediaInfo.metadata.albumName = 'This is the name of the album';
//mediaInfo.metadata.composer = 'composer';
//mediaInfo.metadata.trackNumber = 13;
//mediaInfo.metadata.discNumber = 2;
mediaInfo.metadata.releaseDate = '2011';
mediaInfo.metadata.images = [{'url': 'http://m1.behance.net/rendition/modules/575407/disp/822271229466847.png'}];            
var request = new chrome.cast.media.LoadRequest(mediaInfo);
session.loadMedia(request, onMediaDiscovered.bind(this, 'loadMedia'), onMediaError());

已提交错误修复Chrome Sender SDK与默认接收器应用程序之间的某些不匹配。

您可以随时使用自己的自定义接收器应用并添加自己的自定义数据，如下所示。

var mediaInfo = new chrome.cast.media.MediaInfo(url, 'audio/mp3');
var request = new chrome.cast.media.LoadRequest(mediaInfo);
var payload = {
  "albumName": 'This is the name of the album',
  "songName": 'This is the name of the song',
  "thumb": 'http://m1.behance.net/rendition/modules/575407/disp/822271229466847.png',
  "artistName": 'This is the name of the artist'
};
var json = {
  "payload": payload
};
request.customData = json;

谷歌演员：如何在默认媒体播放器中显示元数据？

3 个答案: