Bug 1790463 - part1 : add the variant 'wmf-media-engine' and use it in mochitest-media. r=jmaher

Differential Revision: https://phabricator.services.mozilla.com/D157145

taskcluster/ci/config.yml

@@ -77,6 +77,7 @@ treeherder:
         'M-swr-wayland': 'Mochitests with software webrender and Wayland backend enabled'
         'M-wayland': 'Mochitests with Wayland backend enabled'
         'M-wayland-1proc': 'Mochitests with Wayland backend enabled without e10s'
+        'M-wmfme': 'Mochitests with Windows Media Foundation media engine enabled'
         'M-f': 'Mochitest failures'
         'M-dt-no-eft-nofis': 'DevTools Mochitests with EFT without fission enabled'
         'MSI': 'Repack installers into MSIs'

taskcluster/ci/test/mochitest.yml

@@ -523,6 +523,7 @@ mochitest-media:
         - webgl-ipc
         - webrender-sw+no-fission
         - webrender-sw
+        - wmf-media-engine
     run-on-projects:
         by-variant:
             webgl-ipc:
@@ -573,6 +574,10 @@ mochitest-media:
                     linux1804-64-qr/debug: ['trunk']
                     linux1804-64(-shippable|-asan)?-qr/opt: ['trunk']
                     default: []
+            wmf-media-engine:
+                by-test-platform:
+                    (windows10-64-2004)(?!.*-qr).*: ['autoland', 'mozilla-central']
+                    default: []
             default:
                 by-test-platform:
                     android.*: []
@@ -584,15 +589,18 @@ mochitest-media:
                     default: built-projects
     loopback-video: true
     chunks:
-        by-test-platform:
-            android-em-7.*: 1
-            windows10-64-2004.*: 1
-            macosx.*64.*/.*: 2
-            windows10-aarch64-qr/.*: 1
-            windows.*32-shippable/.*: 2
-            linux1804-64(-shippable|-devedition|-.*qr)/opt: 2
-            linux.*64-tsan-qr/opt: 4
-            default: 3
+        by-variant:
+            wmf-media-engine: 1
+            default:
+                by-test-platform:
+                    android-em-7.*: 1
+                    windows10-64-2004.*: 1
+                    macosx.*64.*/.*: 2
+                    windows10-aarch64-qr/.*: 1
+                    windows.*32-shippable/.*: 2
+                    linux1804-64(-shippable|-devedition|-.*qr)/opt: 2
+                    linux.*64-tsan-qr/opt: 4
+                    default: 3
     mozharness:
         mochitest-flavor: plain
         chunked:

taskcluster/ci/test/variants.yml

@@ -277,3 +277,19 @@ devtools-no-eft:
         mozharness:
             extra-options:
                 - "--setpref=devtools.every-frame-target.enabled=false"
+
+wmf-media-engine:
+    description: "{description} with Windows Media Foundation media engine enabled"
+    component: "Core::Audio/Video:Playback"
+    expiration: "2023-04-10"
+    when:
+        $eval: '"windows10" in task["test-platform"]'
+    suffix: "wmfme"
+    replace:
+        tier: 2
+    merge:
+        mozharness:
+            extra-options:
+                - "--tag=media-engine-compatible"
+                - "--setpref=media.wmf.media-engine.enabled=true"
+                - "--setpref=media.wmf.media-engine.channel-decoder.enabled=true"

taskcluster/gecko_taskgraph/transforms/test/__init__.py

@@ -104,7 +104,9 @@ test_description_schema = Schema(
         # number of chunks to create for this task.  This can be keyed by test
         # platform by passing a dictionary in the `by-test-platform` key.  If the
         # test platform is not found, the key 'default' will be tried.
-        Required("chunks"): optionally_keyed_by("test-platform", Any(int, "dynamic")),
+        Required("chunks"): optionally_keyed_by(
+            "test-platform", "variant", Any(int, "dynamic")
+        ),
         # Custom 'test_manifest_loader' to use, overriding the one configured in the
         # parameters. When 'null', no test chunking will be performed. Can also
         # be used to disable "manifest scheduling".