6 files changed, 697 insertions, 0 deletions
diff --git a/dom/media/webspeech/synth/ipc/PSpeechSynthesis.ipdl b/dom/media/webspeech/synth/ipc/PSpeechSynthesis.ipdl
new file mode 100644
index 0000000000..38e360bf4c
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/PSpeechSynthesis.ipdl
@@ -0,0 +1,50 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+include protocol PContent;
+include protocol PSpeechSynthesisRequest;
+
+namespace mozilla {
+namespace dom {
+
+struct RemoteVoice {
+  nsString voiceURI;
+  nsString name;
+  nsString lang;
+  bool localService;
+  bool queued;
+};
+
+[ManualDealloc]
+sync protocol PSpeechSynthesis
+{
+  manager PContent;
+  manages PSpeechSynthesisRequest;
+
+child:
+
+    async VoiceAdded(RemoteVoice aVoice);
+
+    async VoiceRemoved(nsString aUri);
+
+    async SetDefaultVoice(nsString aUri, bool aIsDefault);
+
+    async IsSpeakingChanged(bool aIsSpeaking);
+
+    async NotifyVoicesChanged();
+
+    async InitialVoicesAndState(RemoteVoice[] aVoices, nsString[] aDefaults,
+                                bool aIsSpeaking);
+
+parent:
+    async __delete__();
+
+    async PSpeechSynthesisRequest(nsString aText, nsString aUri, nsString aLang,
+                                  float aVolume, float aRate, float aPitch, bool aShouldResistFingerprinting);
+};
+
+} // namespace dom
+} // namespace mozilla
diff --git a/dom/media/webspeech/synth/ipc/PSpeechSynthesisRequest.ipdl b/dom/media/webspeech/synth/ipc/PSpeechSynthesisRequest.ipdl
new file mode 100644
index 0000000000..8543eebc5b
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/PSpeechSynthesisRequest.ipdl
@@ -0,0 +1,48 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+include protocol PSpeechSynthesis;
+
+namespace mozilla {
+namespace dom {
+
+[ManualDealloc, ChildImpl=virtual, ParentImpl=virtual]
+async protocol PSpeechSynthesisRequest
+{
+  manager PSpeechSynthesis;
+
+ parent:
+
+  async __delete__();
+
+  async Pause();
+
+  async Resume();
+
+  async Cancel();
+
+  async ForceEnd();
+
+  async SetAudioOutputVolume(float aVolume);
+
+ child:
+
+  async OnEnd(bool aIsError, float aElapsedTime, uint32_t aCharIndex);
+
+  async OnStart(nsString aUri);
+
+  async OnPause(float aElapsedTime, uint32_t aCharIndex);
+
+  async OnResume(float aElapsedTime, uint32_t aCharIndex);
+
+  async OnBoundary(nsString aName, float aElapsedTime, uint32_t aCharIndex,
+                   uint32_t aCharLength, uint8_t argc);
+
+  async OnMark(nsString aName, float aElapsedTime, uint32_t aCharIndex);
+};
+
+} // namespace dom
+} // namespace mozilla
diff --git a/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.cpp b/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.cpp
new file mode 100644
index 0000000000..9a9e9b6fe2
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.cpp
@@ -0,0 +1,169 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SpeechSynthesisChild.h"
+#include "nsSynthVoiceRegistry.h"
+
+namespace mozilla::dom {
+
+SpeechSynthesisChild::SpeechSynthesisChild() {
+  MOZ_COUNT_CTOR(SpeechSynthesisChild);
+}
+
+SpeechSynthesisChild::~SpeechSynthesisChild() {
+  MOZ_COUNT_DTOR(SpeechSynthesisChild);
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvInitialVoicesAndState(
+    nsTArray<RemoteVoice>&& aVoices, nsTArray<nsString>&& aDefaults,
+    const bool& aIsSpeaking) {
+  nsSynthVoiceRegistry::RecvInitialVoicesAndState(aVoices, aDefaults,
+                                                  aIsSpeaking);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvVoiceAdded(
+    const RemoteVoice& aVoice) {
+  nsSynthVoiceRegistry::RecvAddVoice(aVoice);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvVoiceRemoved(
+    const nsAString& aUri) {
+  nsSynthVoiceRegistry::RecvRemoveVoice(aUri);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvSetDefaultVoice(
+    const nsAString& aUri, const bool& aIsDefault) {
+  nsSynthVoiceRegistry::RecvSetDefaultVoice(aUri, aIsDefault);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvIsSpeakingChanged(
+    const bool& aIsSpeaking) {
+  nsSynthVoiceRegistry::RecvIsSpeakingChanged(aIsSpeaking);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisChild::RecvNotifyVoicesChanged() {
+  nsSynthVoiceRegistry::RecvNotifyVoicesChanged();
+  return IPC_OK();
+}
+
+PSpeechSynthesisRequestChild*
+SpeechSynthesisChild::AllocPSpeechSynthesisRequestChild(
+    const nsAString& aText, const nsAString& aLang, const nsAString& aUri,
+    const float& aVolume, const float& aRate, const float& aPitch,
+    const bool& aShouldResistFingerprinting) {
+  MOZ_CRASH("Caller is supposed to manually construct a request!");
+}
+
+bool SpeechSynthesisChild::DeallocPSpeechSynthesisRequestChild(
+    PSpeechSynthesisRequestChild* aActor) {
+  delete aActor;
+  return true;
+}
+
+// SpeechSynthesisRequestChild
+
+SpeechSynthesisRequestChild::SpeechSynthesisRequestChild(SpeechTaskChild* aTask)
+    : mTask(aTask) {
+  mTask->mActor = this;
+  MOZ_COUNT_CTOR(SpeechSynthesisRequestChild);
+}
+
+SpeechSynthesisRequestChild::~SpeechSynthesisRequestChild() {
+  MOZ_COUNT_DTOR(SpeechSynthesisRequestChild);
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnStart(
+    const nsAString& aUri) {
+  mTask->DispatchStartImpl(aUri);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnEnd(
+    const bool& aIsError, const float& aElapsedTime,
+    const uint32_t& aCharIndex) {
+  SpeechSynthesisRequestChild* actor = mTask->mActor;
+  mTask->mActor = nullptr;
+
+  if (aIsError) {
+    mTask->DispatchErrorImpl(aElapsedTime, aCharIndex);
+  } else {
+    mTask->DispatchEndImpl(aElapsedTime, aCharIndex);
+  }
+
+  SpeechSynthesisRequestChild::Send__delete__(actor);
+
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnPause(
+    const float& aElapsedTime, const uint32_t& aCharIndex) {
+  mTask->DispatchPauseImpl(aElapsedTime, aCharIndex);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnResume(
+    const float& aElapsedTime, const uint32_t& aCharIndex) {
+  mTask->DispatchResumeImpl(aElapsedTime, aCharIndex);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnBoundary(
+    const nsAString& aName, const float& aElapsedTime,
+    const uint32_t& aCharIndex, const uint32_t& aCharLength,
+    const uint8_t& argc) {
+  mTask->DispatchBoundaryImpl(aName, aElapsedTime, aCharIndex, aCharLength,
+                              argc);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestChild::RecvOnMark(
+    const nsAString& aName, const float& aElapsedTime,
+    const uint32_t& aCharIndex) {
+  mTask->DispatchMarkImpl(aName, aElapsedTime, aCharIndex);
+  return IPC_OK();
+}
+
+// SpeechTaskChild
+
+SpeechTaskChild::SpeechTaskChild(SpeechSynthesisUtterance* aUtterance,
+                                 bool aShouldResistFingerprinting)
+    : nsSpeechTask(aUtterance, aShouldResistFingerprinting), mActor(nullptr) {}
+
+NS_IMETHODIMP
+SpeechTaskChild::Setup(nsISpeechTaskCallback* aCallback) {
+  MOZ_CRASH("Should never be called from child");
+}
+
+void SpeechTaskChild::Pause() {
+  MOZ_ASSERT(mActor);
+  mActor->SendPause();
+}
+
+void SpeechTaskChild::Resume() {
+  MOZ_ASSERT(mActor);
+  mActor->SendResume();
+}
+
+void SpeechTaskChild::Cancel() {
+  MOZ_ASSERT(mActor);
+  mActor->SendCancel();
+}
+
+void SpeechTaskChild::ForceEnd() {
+  MOZ_ASSERT(mActor);
+  mActor->SendForceEnd();
+}
+
+void SpeechTaskChild::SetAudioOutputVolume(float aVolume) {
+  if (mActor) {
+    mActor->SendSetAudioOutputVolume(aVolume);
+  }
+}
+
+}  // namespace mozilla::dom
diff --git a/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.h b/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.h
new file mode 100644
index 0000000000..f57582932a
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/SpeechSynthesisChild.h
@@ -0,0 +1,107 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_SpeechSynthesisChild_h
+#define mozilla_dom_SpeechSynthesisChild_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/PSpeechSynthesisChild.h"
+#include "mozilla/dom/PSpeechSynthesisRequestChild.h"
+#include "nsSpeechTask.h"
+
+namespace mozilla::dom {
+
+class nsSynthVoiceRegistry;
+class SpeechSynthesisRequestChild;
+class SpeechTaskChild;
+
+class SpeechSynthesisChild : public PSpeechSynthesisChild {
+  friend class nsSynthVoiceRegistry;
+  friend class PSpeechSynthesisChild;
+
+ public:
+  mozilla::ipc::IPCResult RecvInitialVoicesAndState(
+      nsTArray<RemoteVoice>&& aVoices, nsTArray<nsString>&& aDefaults,
+      const bool& aIsSpeaking);
+
+  mozilla::ipc::IPCResult RecvVoiceAdded(const RemoteVoice& aVoice);
+
+  mozilla::ipc::IPCResult RecvVoiceRemoved(const nsAString& aUri);
+
+  mozilla::ipc::IPCResult RecvSetDefaultVoice(const nsAString& aUri,
+                                              const bool& aIsDefault);
+
+  mozilla::ipc::IPCResult RecvIsSpeakingChanged(const bool& aIsSpeaking);
+
+  mozilla::ipc::IPCResult RecvNotifyVoicesChanged();
+
+ protected:
+  SpeechSynthesisChild();
+  virtual ~SpeechSynthesisChild();
+
+  PSpeechSynthesisRequestChild* AllocPSpeechSynthesisRequestChild(
+      const nsAString& aLang, const nsAString& aUri, const nsAString& aText,
+      const float& aVolume, const float& aPitch, const float& aRate,
+      const bool& aShouldResistFingerprinting);
+  bool DeallocPSpeechSynthesisRequestChild(
+      PSpeechSynthesisRequestChild* aActor);
+};
+
+class SpeechSynthesisRequestChild : public PSpeechSynthesisRequestChild {
+ public:
+  explicit SpeechSynthesisRequestChild(SpeechTaskChild* aTask);
+  virtual ~SpeechSynthesisRequestChild();
+
+ protected:
+  mozilla::ipc::IPCResult RecvOnStart(const nsAString& aUri) override;
+
+  mozilla::ipc::IPCResult RecvOnEnd(const bool& aIsError,
+                                    const float& aElapsedTime,
+                                    const uint32_t& aCharIndex) override;
+
+  mozilla::ipc::IPCResult RecvOnPause(const float& aElapsedTime,
+                                      const uint32_t& aCharIndex) override;
+
+  mozilla::ipc::IPCResult RecvOnResume(const float& aElapsedTime,
+                                       const uint32_t& aCharIndex) override;
+
+  mozilla::ipc::IPCResult RecvOnBoundary(const nsAString& aName,
+                                         const float& aElapsedTime,
+                                         const uint32_t& aCharIndex,
+                                         const uint32_t& aCharLength,
+                                         const uint8_t& argc) override;
+
+  mozilla::ipc::IPCResult RecvOnMark(const nsAString& aName,
+                                     const float& aElapsedTime,
+                                     const uint32_t& aCharIndex) override;
+
+  RefPtr<SpeechTaskChild> mTask;
+};
+
+class SpeechTaskChild : public nsSpeechTask {
+  friend class SpeechSynthesisRequestChild;
+
+ public:
+  explicit SpeechTaskChild(SpeechSynthesisUtterance* aUtterance,
+                           bool aShouldResistFingerprinting);
+
+  NS_IMETHOD Setup(nsISpeechTaskCallback* aCallback) override;
+
+  void Pause() override;
+
+  void Resume() override;
+
+  void Cancel() override;
+
+  void ForceEnd() override;
+
+  void SetAudioOutputVolume(float aVolume) override;
+
+ private:
+  SpeechSynthesisRequestChild* mActor;
+};
+
+}  // namespace mozilla::dom
+
+#endif
diff --git a/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.cpp b/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.cpp
new file mode 100644
index 0000000000..a9eb53c5b7
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.cpp
@@ -0,0 +1,221 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SpeechSynthesisParent.h"
+#include "nsSynthVoiceRegistry.h"
+
+namespace mozilla::dom {
+
+SpeechSynthesisParent::SpeechSynthesisParent() {
+  MOZ_COUNT_CTOR(SpeechSynthesisParent);
+}
+
+SpeechSynthesisParent::~SpeechSynthesisParent() {
+  MOZ_COUNT_DTOR(SpeechSynthesisParent);
+}
+
+void SpeechSynthesisParent::ActorDestroy(ActorDestroyReason aWhy) {
+  // Implement me! Bug 1005141
+}
+
+bool SpeechSynthesisParent::SendInit() {
+  return nsSynthVoiceRegistry::GetInstance()->SendInitialVoicesAndState(this);
+}
+
+PSpeechSynthesisRequestParent*
+SpeechSynthesisParent::AllocPSpeechSynthesisRequestParent(
+    const nsAString& aText, const nsAString& aLang, const nsAString& aUri,
+    const float& aVolume, const float& aRate, const float& aPitch,
+    const bool& aShouldResistFingerprinting) {
+  RefPtr<SpeechTaskParent> task =
+      new SpeechTaskParent(aVolume, aText, aShouldResistFingerprinting);
+  SpeechSynthesisRequestParent* actor = new SpeechSynthesisRequestParent(task);
+  return actor;
+}
+
+bool SpeechSynthesisParent::DeallocPSpeechSynthesisRequestParent(
+    PSpeechSynthesisRequestParent* aActor) {
+  delete aActor;
+  return true;
+}
+
+mozilla::ipc::IPCResult
+SpeechSynthesisParent::RecvPSpeechSynthesisRequestConstructor(
+    PSpeechSynthesisRequestParent* aActor, const nsAString& aText,
+    const nsAString& aLang, const nsAString& aUri, const float& aVolume,
+    const float& aRate, const float& aPitch,
+    const bool& aShouldResistFingerprinting) {
+  MOZ_ASSERT(aActor);
+  SpeechSynthesisRequestParent* actor =
+      static_cast<SpeechSynthesisRequestParent*>(aActor);
+  nsSynthVoiceRegistry::GetInstance()->Speak(aText, aLang, aUri, aVolume, aRate,
+                                             aPitch, actor->mTask);
+  return IPC_OK();
+}
+
+// SpeechSynthesisRequestParent
+
+SpeechSynthesisRequestParent::SpeechSynthesisRequestParent(
+    SpeechTaskParent* aTask)
+    : mTask(aTask) {
+  mTask->mActor = this;
+  MOZ_COUNT_CTOR(SpeechSynthesisRequestParent);
+}
+
+SpeechSynthesisRequestParent::~SpeechSynthesisRequestParent() {
+  if (mTask) {
+    mTask->mActor = nullptr;
+    // If we still have a task, cancel it.
+    mTask->Cancel();
+  }
+  MOZ_COUNT_DTOR(SpeechSynthesisRequestParent);
+}
+
+void SpeechSynthesisRequestParent::ActorDestroy(ActorDestroyReason aWhy) {
+  // Implement me! Bug 1005141
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::RecvPause() {
+  MOZ_ASSERT(mTask);
+  mTask->Pause();
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::Recv__delete__() {
+  MOZ_ASSERT(mTask);
+  mTask->mActor = nullptr;
+  mTask = nullptr;
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::RecvResume() {
+  MOZ_ASSERT(mTask);
+  mTask->Resume();
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::RecvCancel() {
+  MOZ_ASSERT(mTask);
+  mTask->Cancel();
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::RecvForceEnd() {
+  MOZ_ASSERT(mTask);
+  mTask->ForceEnd();
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult SpeechSynthesisRequestParent::RecvSetAudioOutputVolume(
+    const float& aVolume) {
+  MOZ_ASSERT(mTask);
+  mTask->SetAudioOutputVolume(aVolume);
+  return IPC_OK();
+}
+
+// SpeechTaskParent
+
+nsresult SpeechTaskParent::DispatchStartImpl(const nsAString& aUri) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnStart(aUri)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchEndImpl(float aElapsedTime,
+                                           uint32_t aCharIndex) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnEnd(false, aElapsedTime, aCharIndex)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchPauseImpl(float aElapsedTime,
+                                             uint32_t aCharIndex) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnPause(aElapsedTime, aCharIndex)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchResumeImpl(float aElapsedTime,
+                                              uint32_t aCharIndex) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnResume(aElapsedTime, aCharIndex)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchErrorImpl(float aElapsedTime,
+                                             uint32_t aCharIndex) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnEnd(true, aElapsedTime, aCharIndex)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchBoundaryImpl(const nsAString& aName,
+                                                float aElapsedTime,
+                                                uint32_t aCharIndex,
+                                                uint32_t aCharLength,
+                                                uint8_t argc) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnBoundary(aName, aElapsedTime, aCharIndex,
+                                          aCharLength, argc)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult SpeechTaskParent::DispatchMarkImpl(const nsAString& aName,
+                                            float aElapsedTime,
+                                            uint32_t aCharIndex) {
+  if (!mActor) {
+    // Child is already gone.
+    return NS_OK;
+  }
+
+  if (NS_WARN_IF(!(mActor->SendOnMark(aName, aElapsedTime, aCharIndex)))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+}  // namespace mozilla::dom
diff --git a/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.h b/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.h
new file mode 100644
index 0000000000..6ae4d38bbc
--- /dev/null
+++ b/dom/media/webspeech/synth/ipc/SpeechSynthesisParent.h
@@ -0,0 +1,102 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_SpeechSynthesisParent_h
+#define mozilla_dom_SpeechSynthesisParent_h
+
+#include "mozilla/dom/PSpeechSynthesisParent.h"
+#include "mozilla/dom/PSpeechSynthesisRequestParent.h"
+#include "nsSpeechTask.h"
+
+namespace mozilla::dom {
+
+class ContentParent;
+class SpeechTaskParent;
+class SpeechSynthesisRequestParent;
+
+class SpeechSynthesisParent : public PSpeechSynthesisParent {
+  friend class ContentParent;
+  friend class SpeechSynthesisRequestParent;
+  friend class PSpeechSynthesisParent;
+
+ public:
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  bool SendInit();
+
+ protected:
+  SpeechSynthesisParent();
+  virtual ~SpeechSynthesisParent();
+  PSpeechSynthesisRequestParent* AllocPSpeechSynthesisRequestParent(
+      const nsAString& aText, const nsAString& aLang, const nsAString& aUri,
+      const float& aVolume, const float& aRate, const float& aPitch,
+      const bool& aShouldResistFingerprinting);
+
+  bool DeallocPSpeechSynthesisRequestParent(
+      PSpeechSynthesisRequestParent* aActor);
+
+  mozilla::ipc::IPCResult RecvPSpeechSynthesisRequestConstructor(
+      PSpeechSynthesisRequestParent* aActor, const nsAString& aText,
+      const nsAString& aLang, const nsAString& aUri, const float& aVolume,
+      const float& aRate, const float& aPitch,
+      const bool& aShouldResistFingerprinting) override;
+};
+
+class SpeechSynthesisRequestParent : public PSpeechSynthesisRequestParent {
+ public:
+  explicit SpeechSynthesisRequestParent(SpeechTaskParent* aTask);
+  virtual ~SpeechSynthesisRequestParent();
+
+  RefPtr<SpeechTaskParent> mTask;
+
+ protected:
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  mozilla::ipc::IPCResult RecvPause() override;
+
+  mozilla::ipc::IPCResult RecvResume() override;
+
+  mozilla::ipc::IPCResult RecvCancel() override;
+
+  mozilla::ipc::IPCResult RecvForceEnd() override;
+
+  mozilla::ipc::IPCResult RecvSetAudioOutputVolume(
+      const float& aVolume) override;
+
+  mozilla::ipc::IPCResult Recv__delete__() override;
+};
+
+class SpeechTaskParent : public nsSpeechTask {
+  friend class SpeechSynthesisRequestParent;
+
+ public:
+  SpeechTaskParent(float aVolume, const nsAString& aUtterance,
+                   bool aShouldResistFingerprinting)
+      : nsSpeechTask(aVolume, aUtterance, aShouldResistFingerprinting),
+        mActor(nullptr) {}
+
+  nsresult DispatchStartImpl(const nsAString& aUri) override;
+
+  nsresult DispatchEndImpl(float aElapsedTime, uint32_t aCharIndex) override;
+
+  nsresult DispatchPauseImpl(float aElapsedTime, uint32_t aCharIndex) override;
+
+  nsresult DispatchResumeImpl(float aElapsedTime, uint32_t aCharIndex) override;
+
+  nsresult DispatchErrorImpl(float aElapsedTime, uint32_t aCharIndex) override;
+
+  nsresult DispatchBoundaryImpl(const nsAString& aName, float aElapsedTime,
+                                uint32_t aCharIndex, uint32_t aCharLength,
+                                uint8_t argc) override;
+
+  nsresult DispatchMarkImpl(const nsAString& aName, float aElapsedTime,
+                            uint32_t aCharIndex) override;
+
+ private:
+  SpeechSynthesisRequestParent* mActor;
+};
+
+}  // namespace mozilla::dom
+
+#endif