android - Exoplayer 错误中的 Widevine Drm

Question

我正在 Exoplayer Android 上实现一个 OTT 应用程序。我们正在使用 Widewine DRM 保护我们的内容。但是我们收到如下所示的错误。

 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err: com.google.android.exoplayer2.drm.UnsupportedDrmException: android.media.UnsupportedSchemeException: Failed to instantiate drm object.
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.google.android.exoplayer2.drm.FrameworkMediaDrm.newInstance(FrameworkMediaDrm.java:50)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.cinesoft.cinehome.player.PlayerActivity.buildDrmSessionManager(PlayerActivity.java:483)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.cinesoft.cinehome.player.PlayerActivity.initPlayer(PlayerActivity.java:398)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.cinesoft.cinehome.player.PlayerActivity.onPlayRequestResult(PlayerActivity.java:1308)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.cinesoft.cinehome.api.services.ConnectToServer$3.onResponse(ConnectToServer.java:503)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.cinesoft.cinehome.api.services.ConnectToServer$3.onResponse(ConnectToServer.java:483)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.android.volley.toolbox.JsonRequest.deliverResponse(JsonRequest.java:65)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.os.Handler.handleCallback(Handler.java:739)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:95)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.os.Looper.loop(Looper.java:148)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:7325)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err: Caused by: android.media.UnsupportedSchemeException: Failed to instantiate drm object.
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.media.MediaDrm.native_setup(Native Method)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at android.media.MediaDrm.<init>(MediaDrm.java:215)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.google.android.exoplayer2.drm.FrameworkMediaDrm.<init>(FrameworkMediaDrm.java:57)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     at com.google.android.exoplayer2.drm.FrameworkMediaDrm.newInstance(FrameworkMediaDrm.java:48)
 06-13 17:31:53.641 18652-18652/com.cinesoft.cinehome.android W/System.err:     ... 14 more

代码如下所示

mediaDataSourceFactory = buildDataSourceFactory(true);
        mainHandler = new Handler();
        bandwidthMeter = new DefaultBandwidthMeter();

        videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);

        trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
        eventLogger = new EventLogger(trackSelector);
        if (JsonParser.sStr_drmStatus.equalsIgnoreCase("1")) {
            AndroidDeviceIdentifier androidDeviceIdentifier = new AndroidDeviceIdentifier();
            UUID drmSchemeUuid = null;
            drmSchemeUuid = UUID.fromString(androidDeviceIdentifier.getUniqueDeviceIdentifier(PlayerActivity.this));
            drmSessionManager = null;
            if (drmSchemeUuid != null) {
                String drmLicenseUrl = ConnectPortalSettings.WIDEVINE_LICENSE_SERVER_URL;
                String[] keyRequestPropertiesArray = new String[]{};
                //                drmLicenseUrl = intent.getStringExtra(DRM_LICENSE_URL);
                //                keyRequestPropertiesArray = intent.getStringArrayExtra(DRM_KEY_REQUEST_PROPERTIES);
                try {
                    drmSessionManager = buildDrmSessionManager(drmSchemeUuid, drmLicenseUrl,
                            keyRequestPropertiesArray);
                } catch (UnsupportedDrmException e) {
                    int errorStringId = Util.SDK_INT < 18 ? R.string.error_drm_not_supported
                            : (e.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME
                            ? R.string.error_drm_unsupported_scheme : R.string.error_drm_unknown);
                    e.printStackTrace();
                    Log.e("Drm Error Code", String.valueOf(errorStringId));
                    return;
                }
            }
            @SimpleExoPlayer.ExtensionRendererMode int extensionRendererMode =
                    ((BaseApplication) getApplication()).useExtensionRenderers()
                            ? (false ? SimpleExoPlayer.EXTENSION_RENDERER_MODE_PREFER
                            : SimpleExoPlayer.EXTENSION_RENDERER_MODE_ON)
                            : SimpleExoPlayer.EXTENSION_RENDERER_MODE_OFF;
            LoadControl loadControl = new DefaultLoadControl();
 // 3. Create the player

                 player = ExoPlayerFactory.newSimpleInstance(this, trackSelector, loadControl,
                    drmSessionManager, extensionRendererMode);
        } else {
            LoadControl loadControl = new DefaultLoadControl();
            player = ExoPlayerFactory.newSimpleInstance(this, trackSelector, loadControl);
        }

请帮我解决这个问题。提前致谢。

Answer 1

转储中有很多数据可能会令人困惑和分散注意力，但您需要关注的错误是:

android.media.UnsupportedSchemeException: Failed to instantiate drm object

你是在模拟器上运行这个吗？您可能需要在真实设备上运行它才能进行测试。在以下位置查看更多信息: https://github.com/google/ExoPlayer/issues/1616

如果您不是在模拟器上运行而是在设备上运行，则可能是您运行它的设备有问题，如下所示: https://github.com/google/ExoPlayer/issues/2260

另外，请注意，当我们关注该错误时，我们也认识到它是:UnsupportedSchemeException

Exception thrown when an attempt is made to construct a MediaDrm object using a crypto scheme UUID that is not supported by the device

来自: https://developer.android.com/reference/android/media/UnsupportedSchemeException.html