Merge pull request #92 from bbc/seek-without-readystate-check

Add seekWithoutReadyStateCheck override property

Author: jlks

src/core/Settings.js

@@ -773,6 +773,8 @@ import Events from './events/Events';
  * Overwrite the manifest segments base information timescale attributes with the timescale set in initialization segments
  * @property {boolean} [enableManifestTimescaleMismatchFix=false]
  * Defines the delay in milliseconds between two consecutive checks for events to be fired.
+ * @property {boolean} [seekWithoutReadyStateCheck=false]
+ * This allows a seek by setting currentTime regardless of the loadedmetadata event being emitted
  * @property {boolean} [parseInbandPrft=false]
  * Set to true if dash.js should parse inband prft boxes (ProducerReferenceTime) and trigger events.
  * @property {module:Settings~Metrics} metrics Metric settings
@@ -898,6 +900,7 @@ function Settings() {
             enableManifestDurationMismatchFix: true,
             parseInbandPrft: false,
             enableManifestTimescaleMismatchFix: false,
+            seekWithoutReadyStateCheck: false,
             capabilities: {
                 filterUnsupportedEssentialProperties: true,
                 useMediaCapabilitiesApi: false

src/streaming/models/VideoModel.js

@@ -104,7 +104,14 @@ function VideoModel() {
                 removeEventListener(setCurrentTimeReadyStateFunction.event, setCurrentTimeReadyStateFunction.func);
             }
             _currentTime = currentTime;
-            setCurrentTimeReadyStateFunction = waitForReadyState(Constants.VIDEO_ELEMENT_READY_STATES.HAVE_METADATA, () => {
+
+            let elementReadyStateEvent = Constants.VIDEO_ELEMENT_READY_STATES.HAVE_METADATA;
+
+            if (settings.get().streaming.seekWithoutReadyStateCheck) {
+                elementReadyStateEvent = Constants.VIDEO_ELEMENT_READY_STATES.HAVE_NOTHING;
+            }
+
+            setCurrentTimeReadyStateFunction = waitForReadyState(elementReadyStateEvent, () => {
                 if (!element) {
                     return;
                 }