virtualcam-module: Revert changes since 27.1.3 (for now)

This reverts commit 4b0767741ab7f3c10d95c96c17a9ac0c0f726ca3,
3f3f9ed7e60a8dbe8c904b234a8b715841df880f,
0e7c17bd6e2f17a6002556ef8229f0b7e2124e91, and
865eecb7396841ccf4b4154b79253f5c8f1a1b76.

plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp

@@ -104,40 +104,20 @@ VCamFilter::VCamFilter()
 
 	/* ---------------------------------------- */
 
-	AddRef();
-}
-
-void VCamFilter::ActuallyStart()
-{
-	if (th.joinable()) {
-		return;
-	}
-
-	ResetEvent(thread_stop);
 	th = std::thread([this] { Thread(); });
-	SetEvent(thread_start);
-}
 
-void VCamFilter::ActuallyStop()
-{
-	if (!th.joinable()) {
-		return;
-	}
-
-	SetEvent(thread_stop);
-	th.join();
+	AddRef();
 }
 
 VCamFilter::~VCamFilter()
 {
-	ActuallyStop();
-
+	SetEvent(thread_stop);
+	if (th.joinable())
+		th.join();
 	video_queue_close(vq);
 
-	if (placeholder.scaled_data) {
+	if (placeholder.scaled_data)
 		free(placeholder.scaled_data);
-		placeholder.scaled_data = nullptr;
-	}
 }
 
 const wchar_t *VCamFilter::FilterName() const
@@ -154,29 +134,7 @@ STDMETHODIMP VCamFilter::Pause()
 		return hr;
 	}
 
-	ActuallyStart();
-	return S_OK;
-}
-
-STDMETHODIMP VCamFilter::Run(REFERENCE_TIME tStart)
-{
-	HRESULT hr = OutputFilter::Run(tStart);
-	if (FAILED(hr)) {
-		return hr;
-	}
-
-	ActuallyStart();
-	return S_OK;
-}
-
-STDMETHODIMP VCamFilter::Stop()
-{
-	HRESULT hr = OutputFilter::Stop();
-	if (FAILED(hr)) {
-		return hr;
-	}
-
-	ActuallyStop();
+	SetEvent(thread_start);
 	return S_OK;
 }
 
@@ -210,11 +168,6 @@ void VCamFilter::Thread()
 	/* ---------------------------------------- */
 	/* load placeholder image                   */
 
-	if (placeholder.scaled_data) {
-		free(placeholder.scaled_data);
-		placeholder.scaled_data = nullptr;
-	}
-
 	if (initialize_placeholder()) {
 		placeholder.source_data = get_placeholder_ptr();
 		get_placeholder_size(&placeholder.cx, &placeholder.cy);

plugins/win-dshow/virtualcam-module/virtualcam-filter.hpp

@@ -52,9 +52,6 @@ class VCamFilter : public DShow::OutputFilter {
 	void UpdatePlaceholder(void);
 	const int GetOutputBufferSize(void);
 
-	void ActuallyStart();
-	void ActuallyStop();
-
 protected:
 	const wchar_t *FilterName() const override;
 
@@ -63,6 +60,4 @@ public:
 	~VCamFilter() override;
 
 	STDMETHODIMP Pause() override;
-	STDMETHODIMP Stop() override;
-	STDMETHODIMP Run(REFERENCE_TIME tStart) override;
 };