Bug 1940906 - Add IsModelInstalled to the model install IPC. r=media-playback-reviewers,alwu

Differential Revision: https://phabricator.services.mozilla.com/D315356

Author: padenot

dom/media/webspeech/recognition/PSpeechRecognition.ipdl

@@ -30,6 +30,9 @@ parent: // HWInference
   // Check if speech recognition models are available (cached or downloadable)
   // for the given languages, used for the "downloadable" Available() result.
   async IsModelAvailable(nsCString[] languages) returns (bool available);
+  // Whether the models are already downloaded to the local cache, used for the
+  // "available" Available() result.
+  async IsModelInstalled(nsCString[] languages) returns (bool installed);
   // Install speech recognition models for the given languages
   async InstallModels(nsCString[] languages) returns (bool success);
   // Initialize the speech recognition session with a language and a list of

dom/media/webspeech/recognition/SpeechRecognitionParent.cpp

@@ -127,6 +127,27 @@ mozilla::ipc::IPCResult SpeechRecognitionParent::RecvIsModelAvailable(
       std::move(aResolver), mIsModelAvailableRequest);
 }
 
+mozilla::ipc::IPCResult SpeechRecognitionParent::RecvIsModelInstalled(
+    const nsTArray<nsCString>& aLanguages,
+    IsModelInstalledResolver&& aResolver) {
+  if (aLanguages.IsEmpty()) {
+    return IPC_FAIL(this,
+                    "RecvIsModelInstalled requires at least one language");
+  }
+
+  nsCString modelId = dom::LanguagesToSpeechModelId(aLanguages);
+  LOGD("{} languages: {} mapped to id={}", __func__,
+       fmt::join(aLanguages, ", "), modelId.get());
+
+  return RunHWInferenceBoolQuery(
+      __func__,
+      [modelId](hwinference::HWInferenceChild* aChild) {
+        return aChild->SendIsModelInstalled(dom::kSpeechRecognitionTask,
+                                            modelId);
+      },
+      std::move(aResolver), mIsModelInstalledRequest);
+}
+
 mozilla::ipc::IPCResult SpeechRecognitionParent::RecvInstallModels(
     const nsTArray<nsCString>& aLanguages, InstallModelsResolver&& aResolver) {
   if (aLanguages.IsEmpty()) {
@@ -447,6 +468,7 @@ void SpeechRecognitionParent::ActorDestroy(ActorDestroyReason aReason) {
   // resolve/reject callbacks never run and try to resolve a dead IPDL
   // resolver after this actor is torn down.
   mIsModelAvailableRequest.DisconnectIfExists();
+  mIsModelInstalledRequest.DisconnectIfExists();
   mRetrieveModelIsInstalledRequest.DisconnectIfExists();
   mInstallModelRequest.DisconnectIfExists();
   mGetModelFileRequest.DisconnectIfExists();

dom/media/webspeech/recognition/SpeechRecognitionParent.h

@@ -49,6 +49,8 @@ class SpeechRecognitionParent final : public PSpeechRecognitionParent {
 
   ipc::IPCResult RecvIsModelAvailable(const nsTArray<nsCString>& aLanguages,
                                       IsModelAvailableResolver&& aResolver);
+  ipc::IPCResult RecvIsModelInstalled(const nsTArray<nsCString>& aLanguages,
+                                      IsModelInstalledResolver&& aResolver);
   mozilla::ipc::IPCResult RecvInstallModels(
       const nsTArray<nsCString>& aLanguages, InstallModelsResolver&& aResolver);
   mozilla::ipc::IPCResult RecvInit(const nsCString& aEngineId,
@@ -72,8 +74,9 @@ class SpeechRecognitionParent final : public PSpeechRecognitionParent {
 
   const dom::ContentParentId mContentId;
 
-  // Shared by RecvIsModelAvailable and RecvInstallModels, which otherwise
-  // only differ in the HWInferenceChild call they make. Resolves
+  // Shared by RecvIsModelAvailable, RecvIsModelInstalled, and
+  // RecvInstallModels, which otherwise only differ in the HWInferenceChild
+  // call they make and which request holder they track it with. Resolves
   // aResolver(false) if the utility process/HWInferenceChild isn't
   // available; otherwise calls aSendFunc(hwInferenceChild), tracks the
   // resulting promise in aRequestHolder, and resolves aResolver with the
@@ -146,6 +149,10 @@ class SpeechRecognitionParent final : public PSpeechRecognitionParent {
   MozPromiseRequestHolder<
       hwinference::PHWInferenceChild::IsModelAvailablePromise>
       mIsModelAvailableRequest;
+  // Backs the JS-facing IsModelInstalled query.
+  MozPromiseRequestHolder<
+      hwinference::PHWInferenceChild::IsModelInstalledPromise>
+      mIsModelInstalledRequest;
   // Tracks RetrieveModel()'s installation check, run before fetching the model
   // file for a recognition session.
   MozPromiseRequestHolder<