port from perforce

aiwaz/Aiwaz/DeviceEnumerator/DisplayAdapter.cpp

@@ -0,0 +1,96 @@
+#include "stdafx.h"
+#include "DisplayAdapter.h"
+#include "outputDevice.h"
+
+
+DisplayAdapter::DisplayAdapter(IDXGIAdapter* ar_Adapter_, ID3D10Device* ar_Device_)
+	: m_Adapter(ar_Adapter_)
+	, m_Device(ar_Device_)
+	, m_HasEnumerated(false)
+	, m_DesiredWidth(0)
+	, m_DesiredHeight(0)
+	, m_DesiredRefreshRate(0)
+	, m_DesiredFormat(DataFormat::Unknown)
+{
+	if (m_Adapter != NULL)
+	{
+		m_Adapter->AddRef();
+		m_Adapter->GetDesc(&m_AdapterDesc);
+	}
+}
+
+
+DisplayAdapter::~DisplayAdapter()
+{
+	for (uint32 i = 0; i < m_EnumeratedOutputs.size(); ++i)
+		delete m_EnumeratedOutputs[i];
+
+	if (m_Adapter != NULL)
+		m_Adapter->Release();
+	m_Adapter = NULL;
+}
+
+
+bool DisplayAdapter::TryEnumerate(uint32 argDesiredWidth, uint32 argDesiredHeight, uint32 argDesiredRefreshRate, DataFormat::Enumeration argDesiredFormat)
+{
+	if (m_HasEnumerated)
+	{
+		if (m_DesiredWidth == argDesiredWidth ||
+			m_DesiredHeight == argDesiredHeight ||
+			m_DesiredRefreshRate == argDesiredRefreshRate ||
+			m_DesiredFormat == argDesiredFormat)
+		{
+			return true;
+		}
+		else
+			m_HasEnumerated = false;
+	}
+	if (m_Adapter == NULL)
+		return false;
+
+	int outputIndex = 0;
+	IDXGIOutput* output = NULL;
+	while (m_Adapter->EnumOutputs(outputIndex, &output) == S_OK)
+	{
+		IOutputDevice* deviceOutput = new OutputDevice(output, m_Device);
+		if (deviceOutput->TryEnumerate(argDesiredWidth, argDesiredHeight, argDesiredRefreshRate, argDesiredFormat))
+			m_EnumeratedOutputs.push_back(deviceOutput);
+		else
+			delete deviceOutput;
+
+		output->Release();
+		outputIndex++;
+	}
+
+	m_DesiredWidth = argDesiredWidth;
+	m_DesiredHeight = argDesiredHeight;
+	m_DesiredRefreshRate = argDesiredRefreshRate;
+	m_DesiredFormat = argDesiredFormat;
+
+	m_HasEnumerated = !m_EnumeratedOutputs.empty();
+	return m_HasEnumerated;
+}
+
+
+IOutputDevice* DisplayAdapter::FindBestOutput(bool argAllowToEnumerate, uint32 argDesiredWidth, uint32 argDesiredHeight, uint32 argDesiredRefreshRate, DataFormat::Enumeration argDesiredFormat)
+{
+	if (argAllowToEnumerate && !this->TryEnumerate(argDesiredWidth, argDesiredHeight, argDesiredRefreshRate, argDesiredFormat))
+		return NULL;
+
+	if (!m_HasEnumerated)
+		return NULL;
+
+	return m_EnumeratedOutputs.front();
+}
+
+
+IDisplayMode* DisplayAdapter::FindBestDisplayMode(bool argAllowToEnumerate, uint32 argDesiredWidth, uint32 argDesiredHeight, uint32 argDesiredRefreshRate, DataFormat::Enumeration argDesiredFormat)
+{
+	if (argAllowToEnumerate && !this->TryEnumerate(argDesiredWidth, argDesiredHeight, argDesiredRefreshRate, argDesiredFormat))
+		return NULL;
+
+	if (!m_HasEnumerated)
+		return NULL;
+
+	return m_EnumeratedOutputs.front()->FindBestDisplayMode(argAllowToEnumerate, argDesiredWidth, argDesiredHeight, argDesiredRefreshRate, argDesiredFormat);
+}