安卓- Chromecast字幕NanoHttpd

Question

我成功地使用NanoHttpd将视频从我的安卓应用程序流式传输到一个本地ip，以便在chromecast上播放。现在我想添加字幕，我在我的SD卡上有本地的.vtt文件，我也在尝试在不同端口的NanonHttpd上传输它。不管怎么说，我看不到字幕。我正确地在视频和字幕本地ips上实现了CORS。如果我在浏览器上输入字幕ip，vtt文件显示成功。

下面是我在MediaInfo上设置substitles时的代码片段：

  MediaTrack englishSubtitle = new MediaTrack.Builder(1 /* ID */,
                MediaTrack.TYPE_TEXT)
                .setName("English Subtitle")
                .setSubtype(MediaTrack.SUBTYPE_SUBTITLES)
                .setContentId(ipdeviceForSubs)
                .setLanguage("en-US")
                .build();

        MediaMetadata mediaMetadata = new MediaMetadata(MediaMetadata.MEDIA_TYPE_MOVIE);
        mediaMetadata.putString(MediaMetadata.KEY_TITLE, contentUri.getLastPathSegment());

        mSelectedMedia = new MediaInfo.Builder(ipdeviceForVideo != null ? ipdeviceForVideo : contentUri.toString())
                .setContentType("video/*")
                .setStreamType(MediaInfo.STREAM_TYPE_BUFFERED)
                .setMetadata(mediaMetadata)
                .setMediaTracks(Arrays.asList(englishSubtitle))
                .build();

这是我的字幕的NanoHttpd for服务器实现

  public class WebserverSubtitles extends NanoHTTPD {
    public WebserverSubtitles() throws IOException {

        super(8081);
    }


    @Override
    @SuppressWarnings("deprecation")
    public NanoHTTPD.Response serve(String uri, Method method, Map<String, String> headers, Map<String, String> parms, Map<String, String> files) {
        try {         
            FileInputStream localFileInputStream = new FileInputStream("/sdcard/Download/v.vtt");
            NanoHTTPD.Response localResponse = new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "text/vtt", localFileInputStream);
            localResponse.addHeader("Access-Control-Allow-Origin", "*");
            localResponse.addHeader("content-type", "text/vtt");
            return localResponse;
        } catch (Exception localException) {
            localException.getMessage();
        }
        return null;
    }

}

感谢您的帮助，谢谢

Answer 1

resp= newFixedLengthResponse(Response.Status.OK, MIME_PLAINTEXT ,"success");
        resp.addHeader("Access-Control-Allow-Origin", "*");
        resp.addHeader("Access-Control-Max-Age", "3628800");
        resp.addHeader("Access-Control-Allow-Methods", "GET, POST, PUT, OPTIONS");
        resp.addHeader("Access-Control-Allow-Headers", "X-Requested-With");
        resp.addHeader("Access-Control-Allow-Headers", "Authorization");




        resp.setChunkedTransfer(true);
return resp;

您必须像上面那样在NanoHttpd服务器上添加cors支持