Merge r245848 - [MSE][GStreamer] update the readyState correctly in M…

…ediaPlayerPrivateGStreamerMSE

https://bugs.webkit.org/show_bug.cgi?id=197834

Patch by Yacine Bandou <yacine.bandou@softathome.com> on 2019-05-28
Reviewed by Xabier Rodriguez-Calvar.

Source/WebCore:

The buffering state and the m_downloadFinished boolean aren't supported in the MSE case.
When the readyState is already "HaveEnoughData", we don't want to revert it to "HaveFutureData",
or else the MediaPlayer would send a "canplay" event instead of a "canplaythrough".

Test: media/media-source/media-source-canplaythrough-event.html

* platform/graphics/gstreamer/mse/MediaPlayerPrivateGStreamerMSE.cpp:
(WebCore::MediaPlayerPrivateGStreamerMSE::updateStates):

LayoutTests:

Add a new test that checks if the MediaElement receives the "canplaythrough"
event when the media content is entirely injected to MSE sourceBuffer.

* media/media-source/media-source-canplaythrough-event-expected.txt: Added.
* media/media-source/media-source-canplaythrough-event.html: Added.

LayoutTests/ChangeLog

@@ -1,3 +1,16 @@
+2019-05-28  Yacine Bandou  <yacine.bandou@softathome.com>
+
+        [MSE][GStreamer] update the readyState correctly in MediaPlayerPrivateGStreamerMSE
+        https://bugs.webkit.org/show_bug.cgi?id=197834
+
+        Reviewed by Xabier Rodriguez-Calvar.
+
+        Add a new test that checks if the MediaElement receives the "canplaythrough"
+        event when the media content is entirely injected to MSE sourceBuffer.
+
+        * media/media-source/media-source-canplaythrough-event-expected.txt: Added.
+        * media/media-source/media-source-canplaythrough-event.html: Added.
+
 2019-06-12  Carlos Garcia Campos  <cgarcia@igalia.com>
 
         [cairo][SVG] Putting multiple path elements in clippath causes rendering artifacts

Source/WebCore/ChangeLog

@@ -1,3 +1,19 @@
+2019-05-28  Yacine Bandou  <yacine.bandou@softathome.com>
+
+        [MSE][GStreamer] update the readyState correctly in MediaPlayerPrivateGStreamerMSE
+        https://bugs.webkit.org/show_bug.cgi?id=197834
+
+        Reviewed by Xabier Rodriguez-Calvar.
+
+        The buffering state and the m_downloadFinished boolean aren't supported in the MSE case.
+        When the readyState is already "HaveEnoughData", we don't want to revert it to "HaveFutureData",
+        or else the MediaPlayer would send a "canplay" event instead of a "canplaythrough".
+
+        Test: media/media-source/media-source-canplaythrough-event.html
+
+        * platform/graphics/gstreamer/mse/MediaPlayerPrivateGStreamerMSE.cpp:
+        (WebCore::MediaPlayerPrivateGStreamerMSE::updateStates):
+
 2019-06-14  Carlos Garcia Campos  <cgarcia@igalia.com>
 
         [cairo] Entering text into forms on github.com creates a trapezoid artifact