Convert CameraModuleCallbacks to new Mojo types

This CL converts CameraModuleCallbacks{Ptr, Request} in media to
the new Mojo type, and uses pending_remote<CameraModuleCallbacks>
in camera_commom.mojom.

Bug: 955171
Change-Id: I3184cb445f9211033af7176c9d97352b2edb849f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1862913
Commit-Queue: Miyoung Shin <myid.shin@igalia.com>
Reviewed-by: Sam McNally <sammc@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707753}

media/capture/video/chromeos/camera_hal_delegate.cc

@@ -363,9 +363,7 @@ void CameraHalDelegate::SetCameraModuleOnIpcThread(
 void CameraHalDelegate::ResetMojoInterfaceOnIpcThread() {
   DCHECK(ipc_task_runner_->BelongsToCurrentThread());
   camera_module_.reset();
-  if (camera_module_callbacks_.is_bound()) {
-    camera_module_callbacks_.Close();
-  }
+  camera_module_callbacks_.reset();
   vendor_tag_ops_delegate_.Reset();
   builtin_camera_info_updated_.Reset();
   camera_module_has_been_set_.Reset();
@@ -416,12 +414,8 @@ void CameraHalDelegate::OnGotNumberOfCamerasOnIpcThread(int32_t num_cameras) {
   // Per camera HAL v3 specification SetCallbacks() should be called after the
   // first time GetNumberOfCameras() is called, and before other CameraModule
   // functions are called.
-  cros::mojom::CameraModuleCallbacksPtr camera_module_callbacks_ptr;
-  cros::mojom::CameraModuleCallbacksRequest camera_module_callbacks_request =
-      mojo::MakeRequest(&camera_module_callbacks_ptr);
-  camera_module_callbacks_.Bind(std::move(camera_module_callbacks_request));
   camera_module_->SetCallbacks(
-      std::move(camera_module_callbacks_ptr),
+      camera_module_callbacks_.BindNewPipeAndPassRemote(),
       base::BindOnce(&CameraHalDelegate::OnSetCallbacksOnIpcThread, this));
 
   camera_module_->GetVendorTagOps(

media/capture/video/chromeos/camera_hal_delegate.h

@@ -20,7 +20,7 @@
 #include "media/capture/video/chromeos/vendor_tag_ops_delegate.h"
 #include "media/capture/video/video_capture_device_factory.h"
 #include "media/capture/video_capture_types.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/receiver.h"
 
 namespace media {
 
@@ -176,9 +176,9 @@ class CAPTURE_EXPORT CameraHalDelegate final
   // to |ipc_task_runner_|.
   cros::mojom::CameraModulePtr camera_module_;
 
-  // The Mojo binding serving the camera module callbacks.  Bound to
+  // The Mojo receiver serving the camera module callbacks.  Bound to
   // |ipc_task_runner_|.
-  mojo::Binding<cros::mojom::CameraModuleCallbacks> camera_module_callbacks_;
+  mojo::Receiver<cros::mojom::CameraModuleCallbacks> camera_module_callbacks_;
 
   // An internal delegate to handle VendorTagOps mojo connection and query
   // information of vendor tags.  Bound to |ipc_task_runner_|.

media/capture/video/chromeos/camera_hal_delegate_unittest.cc

@@ -18,6 +18,7 @@
 #include "media/capture/video/chromeos/video_capture_device_factory_chromeos.h"
 #include "media/capture/video/mock_gpu_memory_buffer_manager.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -154,7 +155,7 @@ TEST_F(CameraHalDelegateTest, GetBuiltinCameraInfo) {
       };
 
   auto set_callbacks_cb =
-      [&](cros::mojom::CameraModuleCallbacksPtr& callbacks,
+      [&](mojo::PendingRemote<cros::mojom::CameraModuleCallbacks>& callbacks,
           cros::mojom::CameraModule::SetCallbacksCallback&) {
         mock_camera_module_.NotifyCameraDeviceChange(
             2, cros::mojom::CameraDeviceStatus::CAMERA_DEVICE_STATUS_PRESENT);
@@ -163,10 +164,10 @@ TEST_F(CameraHalDelegateTest, GetBuiltinCameraInfo) {
   EXPECT_CALL(mock_camera_module_, DoGetNumberOfCameras(_))
       .Times(1)
       .WillOnce(Invoke(get_number_of_cameras_cb));
-  EXPECT_CALL(
-      mock_camera_module_,
-      DoSetCallbacks(A<cros::mojom::CameraModuleCallbacksPtr&>(),
-                     A<cros::mojom::CameraModule::SetCallbacksCallback&>()))
+  EXPECT_CALL(mock_camera_module_,
+              DoSetCallbacks(
+                  A<mojo::PendingRemote<cros::mojom::CameraModuleCallbacks>&>(),
+                  A<cros::mojom::CameraModule::SetCallbacksCallback&>()))
       .Times(1)
       .WillOnce(Invoke(set_callbacks_cb));
   EXPECT_CALL(mock_camera_module_,

media/capture/video/chromeos/mock_camera_module.cc

@@ -41,10 +41,10 @@ void MockCameraModule::GetCameraInfo(int32_t camera_id,
 }
 
 void MockCameraModule::SetCallbacks(
-    cros::mojom::CameraModuleCallbacksPtr callbacks,
+    mojo::PendingRemote<cros::mojom::CameraModuleCallbacks> callbacks,
     SetCallbacksCallback callback) {
   DoSetCallbacks(callbacks, callback);
-  callbacks_ = std::move(callbacks);
+  callbacks_.Bind(std::move(callbacks));
   std::move(callback).Run(0);
 }
 

media/capture/video/chromeos/mock_camera_module.h

@@ -13,6 +13,8 @@
 #include "media/capture/video/chromeos/mojom/camera_common.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/pending_remote.h"
+#include "mojo/public/cpp/bindings/remote.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace media {
@@ -41,11 +43,13 @@ class MockCameraModule : public cros::mojom::CameraModule {
   MOCK_METHOD2(DoGetCameraInfo,
                void(int32_t camera_id, GetCameraInfoCallback& callback));
 
-  void SetCallbacks(cros::mojom::CameraModuleCallbacksPtr callbacks,
-                    SetCallbacksCallback callback) override;
-  MOCK_METHOD2(DoSetCallbacks,
-               void(cros::mojom::CameraModuleCallbacksPtr& callbacks,
-                    SetCallbacksCallback& callback));
+  void SetCallbacks(
+      mojo::PendingRemote<cros::mojom::CameraModuleCallbacks> callbacks,
+      SetCallbacksCallback callback) override;
+  MOCK_METHOD2(
+      DoSetCallbacks,
+      void(mojo::PendingRemote<cros::mojom::CameraModuleCallbacks>& callbacks,
+           SetCallbacksCallback& callback));
 
   void Init(InitCallback callback) override;
   MOCK_METHOD1(DoInit, void(InitCallback& callback));
@@ -82,7 +86,7 @@ class MockCameraModule : public cros::mojom::CameraModule {
 
   base::Thread mock_module_thread_;
   mojo::Binding<cros::mojom::CameraModule> binding_;
-  cros::mojom::CameraModuleCallbacksPtr callbacks_;
+  mojo::Remote<cros::mojom::CameraModuleCallbacks> callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(MockCameraModule);
 };

media/capture/video/chromeos/mojom/camera_common.mojom

@@ -101,7 +101,8 @@ interface CameraModule {
   GetCameraInfo@2(int32 camera_id) => (int32 result, CameraInfo? camera_info);
 
   // Registers the CameraModuleCallbacks interface with the camera HAL.
-  SetCallbacks@3(CameraModuleCallbacks callbacks) => (int32 result);
+  SetCallbacks@3(pending_remote<CameraModuleCallbacks> callbacks)
+      => (int32 result);
 
   // Turns on or off the torch mode of the flash unit associated with the given
   // |camera_id|.