android - 检测 Android TV 上的 HDMI 服务是否已启动

Question

HDMI 服务有问题。我们的 Android TV 应用在 STB 上设置为默认设置。当您启动 STB 时，它不会显示您的启动器，它会立即向您显示应用程序并播放 HLS 视频流。对于播放视频，我们使用 Exo Player版本 2.6.1 与 Exo Media wrapper版本 4.1.0。我们一次又一次地研究机顶盒在 sleep 后唤醒时的黑屏 - 通过 DPAD 开机。在这种情况下，我们得到的播放列表可以正常工作，并且将 channel 切换到另一个效果很好。同一用户通常会出现此问题。

当屏幕变黑时，我们从日志中得到什么(URL_TEST 是我们的播放列表请求):

09-06 19:21:40.018 I/PowerManagerService(  369): Waking up from sleep...
09-06 19:21:40.018 I/WindowManager(  369): No lock screen!
09-06 19:21:40.038 I/AudioHardwareALSA(  104): AudioHardwareALSA::setParameters() screen_state=on
09-06 19:21:40.038 I/qtaguid (  369): Failed write_ctrl(s 1 10056) res=-1 errno=1
09-06 19:21:40.038 W/NetworkManagementSocketTagger(  369): setKernelCountSet(10056, 1) failed with errno -1
09-06 19:21:40.078 D/LightsService(  369): Excessive delay setting light: 54ms
09-06 19:21:41.018 W/SurfaceFlinger(  101): Timed out waiting for hw vsync; faking it
09-06 19:21:41.158 W/OkHttp  (  682): previous digest authentication with same nonce failed, returning null
09-06 19:21:41.158 D/OkHttp  (  682): Cached authentication expired. Sending a new request.
09-06 19:21:42.018 W/SurfaceFlinger(  101): Timed out waiting for hw vsync; faking it
09-06 19:21:42.098 D/DAKARMainActivity(  682): URL_TEST getUri: http://XXX.XXX.XX.XXX:XXXXX/XLIVE/0431233...8355920521/26/3/stream.m3u8
09-06 19:21:43.098 W/SurfaceFlinger(  101): Timed out waiting for hw vsync; faking it
09-06 19:21:43.428 W/DisplayD(   97): iface id HDMI screen is 0
09-06 19:21:43.428 D/Displaymanager(   97): [setHDMIEnable] display 0
09-06 19:21:43.428 D/Displaymanager(   97): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-06 19:21:43.428 D/Displaymanager(   97): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-06 19:21:43.438 W/Displaymanager(   97): interface 4 not support led
09-06 19:21:43.648 I/ActivityManager(  369): Config changes=1400 {1.0 ?mcc?mnc en_LU ldltr sw720dp w1280dp h672dp 160dpi lrg long land -touch -keyb/v/h dpad/v s.8}
09-06 19:21:43.658 D/RemoteControlManager(  369): BroadcastReceiver:android.intent.action.CONFIGURATION_CHANGED

当一切正常并且视频在同一设备上开始播放后，我们从日志中得到什么(URL_TEST 是我们的播放列表请求):

09-05 19:21:58.507 I/PowerManagerService(  369): Waking up from sleep...
09-05 19:21:58.517 I/WindowManager(  369): No lock screen!
09-05 19:21:58.527 D/SurfaceFlinger(  102): Screen acquired, type=0 flinger=0x40691318
09-05 19:21:58.537 I/AudioHardwareALSA(  105): AudioHardwareALSA::setParameters() screen_state=on
09-05 19:21:58.537 I/qtaguid (  369): Failed write_ctrl(s 1 10056) res=-1 errno=1
09-05 19:21:58.537 W/NetworkManagementSocketTagger(  369): setKernelCountSet(10056, 1) failed with errno -1
09-05 19:21:58.577 W/DisplayD(   98): iface id HDMI screen is 0
09-05 19:21:58.577 D/Displaymanager(   98): [setHDMIEnable] display 0
09-05 19:21:58.577 D/Displaymanager(   98): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-05 19:21:58.577 D/Displaymanager(   98): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-05 19:21:58.577 W/Displaymanager(   98): interface 4 not support led
09-05 19:21:58.587 D/LightsService(  369): Excessive delay setting light: 59ms
09-05 19:21:58.797 D/RemoteControlManager(  369): BroadcastReceiver:android.intent.action.CONFIGURATION_CHANGED
09-05 19:21:58.797 D/Environment(  369): screen raw size:1280,720
09-05 19:21:58.797 I/ActivityManager(  369): Config changes=1400 {1.0 ?mcc?mnc en_LU ldltr sw720dp w1280dp h672dp 160dpi lrg long land -touch -keyb/v/h dpad/v s.9}
09-05 19:21:58.947 W/OkHttp  (  681): previous digest authentication with same nonce failed, returning null
09-05 19:21:58.947 D/OkHttp  (  681): Cached authentication expired. Sending a new request.
09-05 19:21:59.077 I/Displaymanager(   98): updatesinkaudioinfo: 0x408de140
09-05 19:21:59.077 I/Displaymanager(   98): BUF: AC3,LPCM,
09-05 19:21:59.077 I/Displaymanager(   98): 
09-05 19:21:59.077 W/DisplayD(   98): Send msg Iface added HDMI
09-05 19:21:59.137 D/DAKARMainActivity(  681): URL_TEST getUri: http://XXX.XXX.XX.XXX:13888/XLIVE/4086274310...086993824321/26/3/stream.m3u8
09-05 19:21:59.417 I/OMXClient(  681): Using client-side OMX mux.
09-05 19:21:59.417 I/        (  681): new RKOMXPlugin
09-05 19:21:59.427 D/ACodec  (  681): MEDIA_MIMETYPE_AUDIO_AAC sampleRate 48000 wifidisplay_flag 0 info 6c5bbe78
09-05 19:21:59.427 E/OMXNodeInstance(  681): OMX_GetExtensionIndex failed   

我们从日志中注意到，当我们出现黑屏时，我们在视频请求后会收到此 Displaymanager (HDMI) 消息:

 09-06 19:21:42.098 D/DAKARMainActivity(  682): URL_TEST getUri: http://XXX.XXX.XX.XXX:XXXXX/XLIVE/0431233...8355920521/26/3/stream.m3u8
09-06 19:21:43.098 W/SurfaceFlinger(  101): Timed out waiting for hw vsync; faking it
09-06 19:21:43.428 W/DisplayD(   97): iface id HDMI screen is 0
09-06 19:21:43.428 D/Displaymanager(   97): [setHDMIEnable] display 0
09-06 19:21:43.428 D/Displaymanager(   97): [operateIfaceMode] property 0 iface 4 type 1 mode 1280x720p-60
09-06 19:21:43.428 D/Displaymanager(   97): [operateIfaceEnable] property 0 iface 4 operate 1 value 1
09-06 19:21:43.438 W/Displaymanager(   97): interface 4 not support led

当一切正常时，反之亦然 - 请参阅上面的日志。

我们假设黑屏可能是由于在我们请求视频流时 HDMI 服务没有 UP 造成的。

我们已尝试通过所有这些方法检测 HDMI 连接(当 HDMI 连接/启动时，我们开始播放视频) - How to check the HDMI device connection status in Android? ，但没有任何帮助。

Android 版本 17。

有什么想法会导致这个问题吗？

UPD1:

附上same issue github discussion

Answer 1

ExoPlayer 更新到 2.8.4 和 ExoMedia 到 4.2.3 解决了问题