Auto merge of #19337 - philn:gecko-canPlayType, r=nox

Implement HTMLMediaElement::canPlayType using gecko-media

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- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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- [x] There are tests for these changes

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components/script/dom/htmlmediaelement.rs

@@ -31,10 +31,13 @@ use dom::node::{window_from_node, document_from_node, Node, UnbindContext};
 use dom::promise::Promise;
 use dom::virtualmethods::VirtualMethods;
 use dom_struct::dom_struct;
+#[cfg(all(any(target_os = "macos", target_os = "linux"), not(any(target_arch = "arm", target_arch = "aarch64"))))]
+use gecko_media::{CanPlayType, GeckoMedia};
 use html5ever::{LocalName, Prefix};
 use ipc_channel::ipc;
 use ipc_channel::router::ROUTER;
 use microtask::{Microtask, MicrotaskRunnable};
+#[allow(unused_imports)]
 use mime::{Mime, SubLevel, TopLevel};
 use net_traits::{FetchResponseListener, FetchMetadata, Metadata, NetworkError};
 use net_traits::request::{CredentialsMode, Destination, RequestInit};
@@ -869,6 +872,20 @@ impl HTMLMediaElementMethods for HTMLMediaElement {
 
     // https://html.spec.whatwg.org/multipage/#dom-navigator-canplaytype
     fn CanPlayType(&self, type_: DOMString) -> CanPlayTypeResult {
+        #[cfg(all(
+            any(target_os = "macos", target_os = "linux"),
+            not(any(target_arch = "arm", target_arch = "aarch64"))))]
+        {
+            let gecko_media = match GeckoMedia::get() {
+                Ok(gecko_media) => gecko_media,
+                Err(_error) => return CanPlayTypeResult::_empty,
+            };
+            return match gecko_media.can_play_type(&type_) {
+                CanPlayType::No => CanPlayTypeResult::_empty,
+                CanPlayType::Maybe => CanPlayTypeResult::Maybe,
+                CanPlayType::Probably => CanPlayTypeResult::Probably
+            };
+        }
         match type_.parse::<Mime>() {
             Ok(Mime(TopLevel::Application, SubLevel::OctetStream, _)) |
             Err(_) => {

tests/wpt/metadata/html/semantics/embedded-content/media-elements/mime-types/canPlayType.html.ini

@@ -1,83 +1,23 @@
 [canPlayType.html]
   type: testharness
-  [video/x-new-fictional-format]
-    expected: FAIL
-
-  [audio/mp4; codecs="mp4a.40.2" (optional)]
-    expected: FAIL
-
-  [audio/mp4 with bogus codec]
-    expected: FAIL
-
-  [audio/ogg; codecs="opus" (optional)]
-    expected: FAIL
-
-  [audio/ogg; codecs="vorbis" (optional)]
-    expected: FAIL
-
-  [audio/ogg with bogus codec]
-    expected: FAIL
-
-  [audio/wav; codecs="1" (optional)]
-    expected: FAIL
-
-  [audio/wav with bogus codec]
-    expected: FAIL
-
   [audio/webm; codecs="opus" (optional)]
     expected: FAIL
 
   [audio/webm; codecs="vorbis" (optional)]
     expected: FAIL
 
-  [audio/webm with bogus codec]
-    expected: FAIL
-
   [video/3gpp; codecs="samr" (optional)]
     expected: FAIL
 
   [video/3gpp; codecs="mp4v.20.8" (optional)]
     expected: FAIL
 
-  [video/3gpp with bogus codec]
-    expected: FAIL
-
-  [video/mp4; codecs="mp4a.40.2" (optional)]
-    expected: FAIL
-
-  [video/mp4; codecs="avc1.42E01E" (optional)]
-    expected: FAIL
-
-  [video/mp4; codecs="avc1.4D401E" (optional)]
-    expected: FAIL
-
-  [video/mp4; codecs="avc1.58A01E" (optional)]
-    expected: FAIL
-
-  [video/mp4; codecs="avc1.64001E" (optional)]
-    expected: FAIL
-
   [video/mp4; codecs="mp4v.20.8" (optional)]
     expected: FAIL
 
   [video/mp4; codecs="mp4v.20.240" (optional)]
     expected: FAIL
 
-  [video/mp4 with bogus codec]
-    expected: FAIL
-
-  [video/ogg; codecs="opus" (optional)]
-    expected: FAIL
-
-  [video/ogg; codecs="vorbis" (optional)]
-    expected: FAIL
-
-  [video/ogg; codecs="theora" (optional)]
-    expected: FAIL
-
-  [video/ogg with bogus codec]
-    expected: FAIL
-
   [video/webm; codecs="opus" (optional)]
     expected: FAIL
 
@@ -96,9 +36,6 @@
   [video/webm; codecs="vp9.0" (optional)]
     expected: FAIL
 
-  [video/webm with bogus codec]
-    expected: FAIL
-
   [audio/mp4 with and without codecs]
     expected: FAIL
 
@@ -108,18 +45,33 @@
   [audio/wav with and without codecs]
     expected: FAIL
 
-  [audio/webm with and without codecs]
-    expected: FAIL
-
-  [video/3gpp with and without codecs]
-    expected: FAIL
-
   [video/mp4 with and without codecs]
     expected: FAIL
 
   [video/ogg with and without codecs]
     expected: FAIL
 
-  [video/webm with and without codecs]
+  [audio/mp4 (optional)]
+    expected: FAIL
+
+  [audio/ogg (optional)]
+    expected: FAIL
+
+  [audio/wav (optional)]
+    expected: FAIL
+
+  [audio/webm (optional)]
+    expected: FAIL
+
+  [video/3gpp (optional)]
+    expected: FAIL
+
+  [video/mp4 (optional)]
+    expected: FAIL
+
+  [video/ogg (optional)]
+    expected: FAIL
+
+  [video/webm (optional)]
     expected: FAIL