chromecast receiver <video>元素onEnded </video>

时间：2014-11-10 19:51:06

标签： chromecast

在我的应用程序中，用户可以在结束后从头开始重新启动视频。

为了实现这一点，我在自定义接收器中覆盖了接收器库MediaManager.onEnded()方法，并向发送方发送自定义消息，而不是调用resetMediaElement，这是此方法的默认行为

此时，用户点击播放按钮，发件人调用RemoteMediaPlayer.play()方法，这会导致接收方库调用play()元素上的<video>方法。

但相反，接收器库会发回一条消息，说明INVALID REQUEST，INVALID_MEDIA_SESSSION_ID。

另外。接收器库已经记录了一条消息＆＃34;

  

意外命令，播放器处于IDLE状态，因此媒体会话ID尚未生效

但接收器的最后一次状态更新显示接收器和发送器日志中的播放器处于PLAYING状态。

这是接收者日志：

::mmOnLoad() mediacast.js:480
url: http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4 mediacast.js:498
duration: 0 mediacast.js:500
::showVideo()- message:[object Object] mediacast.js:257
url:http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4 mediacast.js:259
::fadeOutOldMediaElement() mediacast.js:384
::mmOnLoad()- presenting video from http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4, duration 0 mediacast.js:552
::fadeOutOldMediaElement0() mediacast.js:393
::videoFadedOut()- url: http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4 mediacast.js:265
::videoFadedOut()- setting media element [object HTMLVideoElement] mediacast.js:279
::removeMediaElementOrOverlay() mediacast.js:398
::removeOldMediaElement() mediacast.js:432
::removeOverlay() mediacast.js:427
 [ 40.701s] [cast.receiver.MediaManager] Metadata loaded
 cast_receiver.javascript:574
 [ 40.736s] [cast.receiver.MediaManager] Sending broadcast status message
 cast_receiver.javascript:574
>>>>>the media element state is paused mediacast.js:603
media element networkState = 2, readyState = 1 mediacast.js:605
 [ 40.802s] [cast.receiver.IpcChannel] IPC message sent: {"namespace":"urn:x-cast:com.google.cast.media","senderId":"*:*","data":"{\"type\":\"MEDIA_STATUS\",\"status\":[{\"mediaSessionId\":1,\"playbackRate\":1,\"playerState\":\"PAUSED\",\"currentTime\":0,\"supportedMediaCommands\":15,\"volume\":{\"level\":0.06666666666666667,\"muted\":false},\"media\":{\"customData\":{\"volume\":0.06666666666666667,\"pauseAfter\":true,\"pauseBefore\":true,\"rotation\":0},\"streamType\":\"BUFFERED\",\"duration\":42.4,\"contentType\":\"video/mp4\",\"contentId\":\"http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4\",\"metadata\":{\"metadataType\":1}}}],\"requestId\":1}"}
 cast_receiver.javascript:574
::videoLoaded() mediacast.js:291
::videoLoaded0() mediacast.js:302
::addVideo() mediacast.js:421
::videoLoaded1() mediacast.js:309
 [ 48.434s] [cast.receiver.IpcChannel] Received message: {"data":"{\"type\":\"PLAY\",\"requestId\":2,\"mediaSessionId\":1}","namespace":"urn:x-cast:com.google.cast.media","senderId":"51:name.renkel.james.mediacast-6"}
 cast_receiver.javascript:574
 [ 48.440s] [cast.receiver.CastMessageBus] Dispatching CastMessageBus message [urn:x-cast:com.google.cast.media, 51:name.renkel.james.mediacast-6]: {"type":"PLAY","requestId":2,"mediaSessionId":1}
 cast_receiver.javascript:574
 [ 48.446s] [cast.receiver.MediaManager] MediaManager message received [51:name.renkel.james.mediacast-6] {"type":"PLAY","requestId":2,"mediaSessionId":1}
 cast_receiver.javascript:574
 [ 48.449s] [cast.receiver.MediaManager] Dispatching MediaManager play event
 cast_receiver.javascript:574
 [ 48.457s] [cast.receiver.MediaManager] onPlay
 cast_receiver.javascript:574
 [ 48.473s] [cast.receiver.MediaManager] Sending broadcast status message
 cast_receiver.javascript:574
>>>>>the media element state is buffering mediacast.js:603
media element networkState = 1, readyState = 4 mediacast.js:605
 [ 48.491s] [cast.receiver.IpcChannel] IPC message sent: {"namespace":"urn:x-cast:com.google.cast.media","senderId":"*:*","data":"{\"type\":\"MEDIA_STATUS\",\"status\":[{\"mediaSessionId\":1,\"playbackRate\":1,\"playerState\":\"BUFFERING\",\"currentTime\":0.033322,\"supportedMediaCommands\":15,\"volume\":{\"level\":0.06666666666666667,\"muted\":false}}],\"requestId\":2}"}
 cast_receiver.javascript:574
 [ 49.071s] [cast.receiver.MediaManager] Buffering state changed, isPlayerBuffering: false old time: 0.033322 current time: 0.433322
 cast_receiver.javascript:574
 [ 49.077s] [cast.receiver.MediaManager] Sending broadcast status message
 cast_receiver.javascript:574
>>>>>the media element state is playing mediacast.js:603
media element networkState = 2, readyState = 4 mediacast.js:605
 [ 49.090s] [cast.receiver.IpcChannel] IPC message sent: {"namespace":"urn:x-cast:com.google.cast.media","senderId":"*:*","data":"{\"type\":\"MEDIA_STATUS\",\"status\":[{\"mediaSessionId\":1,\"playbackRate\":1,\"playerState\":\"PLAYING\",\"currentTime\":0.433322,\"supportedMediaCommands\":15,\"volume\":{\"level\":0.06666666666666667,\"muted\":false}}],\"requestId\":0}"}
 cast_receiver.javascript:574
::onEnded(VIDEO) mediacast.js:369
::onEnded- network state:1 mediacast.js:370
::onEnded-   ready state:4 mediacast.js:371
::onEnded-        paused:true mediacast.js:372
::onEnded-         ended:true mediacast.js:373
::sendMessage({"indication":"ended"}) mediacast.js:108
 [ 90.955s] [cast.receiver.IpcChannel] IPC message sent: {"namespace":"urn:x-cast:name.renkel.james.mediacast","senderId":"51:name.renkel.james.mediacast-6","data":"{\"indication\":\"ended\"}"}
 cast_receiver.javascript:574
 [110.341s] [cast.receiver.IpcChannel] Received message: {"data":"{\"type\":\"PLAY\",\"requestId\":3,\"mediaSessionId\":1}","namespace":"urn:x-cast:com.google.cast.media","senderId":"51:name.renkel.james.mediacast-6"}
 cast_receiver.javascript:574
 [110.350s] [cast.receiver.CastMessageBus] Dispatching CastMessageBus message [urn:x-cast:com.google.cast.media, 51:name.renkel.james.mediacast-6]: {"type":"PLAY","requestId":3,"mediaSessionId":1}
 cast_receiver.javascript:574
 [110.358s] [cast.receiver.MediaManager] Unexpected command, player is in IDLE state so the media session ID is not valid yet
 cast_receiver.javascript:574ib cast_receiver.javascript:574gb.Gb cast_receiver.javascript:562B.log cast_receiver.javascript:361E cast_receiver.javascript:412Z.M cast_receiver.javascript:1654W.ra cast_receiver.javascript:1181Hb cast_receiver.javascript:885g.dispatchEvent cast_receiver.javascript:856g.M cast_receiver.javascript:1104Hb cast_receiver.javascript:885g.dispatchEvent cast_receiver.javascript:856g.M cast_receiver.javascript:968
 [110.362s] [cast.receiver.MediaManager] Sending error message to 51:name.renkel.james.mediacast-6
 cast_receiver.javascript:574
 [110.368s] [cast.receiver.IpcChannel] IPC message sent: {"namespace":"urn:x-cast:com.google.cast.media","senderId":"51:name.renkel.james.mediacast-6","data":"{\"requestId\":3,\"type\":\"INVALID_REQUEST\",\"reason\":\"INVALID_MEDIA_SESSION_ID\"}"}
 cast_receiver.javascript:574

这是发件人日志：

11-10 13:36:36.631: D/MC_Sender(15051): ::showVideo()- url: http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4 11-10 13:36:36.732: D/MC_MainActivity.PagerAdapter(15051): ::setPrimaryItem(0)
11-10 13:36:36.732: D/MC_MainActivity(15051): ::setContentPosition(0)
11-10 13:36:40.325: D/MC_MediaPlayer(15051): ::onMessageReceived(): device-TV Room; namespace-urn:x-cast:com.google.cast.media; message-{"type":"MEDIA_STATUS","status":[{"mediaSessionId":2,"playbackRate":1,"playerState":"PAUSED","currentTime":0,"supportedMediaCommands":15,"volume":{"level":0.06666666666666667,"muted":false},"media":{"customData":{"volume":0.06666666666666667,"pauseAfter":true,"pauseBefore":true,"rotation":0},"streamType":"BUFFERED","duration":42.4,"contentType":"video/mp4","contentId":"http://192.168.1.50/apps/chromecast/videos/Inside%20Diamond%20Head-0001.mp4","metadata":{"metadataType":1}}}],"requestId":4}
11-10 13:36:40.375: D/MC_Listeners(15051): ::onStatusUpdated()- playerState=PAUSED
11-10 13:36:40.426: D/MC_Runner(15051): ::onSenderStateChange(PAUSED)- runState=LOADING
11-10 13:36:40.426: D/MC_Runner(15051): ::setRunState(RUNNING)- stopWhenRunning=false
11-10 13:36:40.426: D/MC_CastFragment(15051): ::runnerUpdate()
11-10 13:36:40.456: D/MC_Listeners(15051): ::onStatusUpdated()- playerState=PAUSED
11-10 13:36:40.456: D/MC_Listeners(15051): ::onMetadataUpdated()- mediaType=MOVIE
11-10 13:36:40.516: D/MC_MainActivity.PagerAdapter(15051): ::setPrimaryItem(0)
11-10 13:36:40.516: D/MC_MainActivity(15051): ::setContentPosition(0)
11-10 13:36:40.806: D/MC_Sender(15051): ::loadMedia()- statusCode: 0; success: true
11-10 13:36:40.806: D/MC_Runner(15051): LoadCallback::callback(true): wasStopped=false
...
11-10 13:38:47.201: D/MC_Sender(15051): ::playMedia()
11-10 13:38:47.391: D/MC_MediaPlayer(15051): ::onMessageReceived(): device-TV Room; namespace-urn:x-cast:com.google.cast.media; message-{"type":"MEDIA_STATUS","status":[{"mediaSessionId":1,"playbackRate":1,"playerState":"BUFFERING","currentTime":0.033322,"supportedMediaCommands":15,"volume":{"level":0.06666666666666667,"muted":false}}],"requestId":2}
11-10 13:38:47.411: D/MC_Listeners(15051): ::onStatusUpdated()- playerState=BUFFERING
11-10 13:38:47.531: D/MC_Runner(15051): ::onSenderStateChange(BUFFERING)- runState=RUNNING
11-10 13:38:47.671: D/MC_MainActivity.PagerAdapter(15051): ::setPrimaryItem(0)
11-10 13:38:47.671: D/MC_MainActivity(15051): ::setContentPosition(0)
11-10 13:38:48.372: D/MC_Sender(15051): ::playMedia()- statusCode: 0; success: true
11-10 13:38:48.382: D/MC_MediaPlayer(15051): ::onMessageReceived(): device-TV Room; namespace-urn:x-cast:com.google.cast.media; message-{"type":"MEDIA_STATUS","status":[{"mediaSessionId":1,"playbackRate":1,"playerState":"PLAYING","currentTime":0.6,"supportedMediaCommands":15,"volume":{"level":0.06666666666666667,"muted":false}}],"requestId":0}
...
11-10 13:39:29.736: D/MC_Listeners(15051): ::onMessageReceived()- nameSpace: urn:x-cast:name.renkel.james.mediacast; message: {"indication":"ended"}
11-10 13:39:29.806: D/MC_Runner(15051): ::onSenderStateChange(ENDED)- runState=RUNNING
...
11-10 13:42:19.918: D/MC_CastFragment(15051): ::onClick()
11-10 13:42:19.918: D/MC_Sender(15051): ::playMedia()
11-10 13:42:20.398: D/MC_MediaPlayer(15051): ::onMessageReceived(): device-TV Room; namespace-urn:x-cast:com.google.cast.media; message-{"requestId":3,"type":"INVALID_REQUEST","reason":"INVALID_MEDIA_SESSION_ID"}
11-10 13:42:20.418: D/MC_Sender(15051): ::playMedia()- statusCode: 1; success: false

1 个答案:

答案 0 :(得分：0)

我相信一旦视频结束，它会进入IDLE状态，无论是否调用resetMediaElement。您可以指定状态可能是IDLE的原因不同：https://developers.google.com/cast/docs/reference/receiver/cast.receiver.media.IdleReason。

这有点迂回，但根据https://developers.google.com/cast/docs/reference/receiver/cast.receiver.MediaManager中列出的方法，您可以：

1）检查视频是否成功播放

2）将空闲原因设置为cast.receiver.media.IdleReason.FINISHED

然后，在发件人中，您可以覆盖customizeStatusCallback（）以检查状态和空闲原因，并在将其发送给发件人之前更改状态，以便它可以正确重播。

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