listcodecpropsdlg.cpp

ListCodecProps 这是一个基于对话框的MFC程序

// ListCodecPropsDlg.cpp : implementation file
//
/**
 ** Copyright (C) 2005 EnjoyView Inc., all rights reserved.
 **           Your View, Our Passion. Just Enjoy It!
 **
 **            http://spaces.msn.com/members/jemylu
 **
 **/

/*************************************************************************/

#include "stdafx.h"
#include "ListCodecProps.h"
#include "ListCodecPropsDlg.h"

#include "safe_defs.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CListCodecPropsDlg dialog

CListCodecPropsDlg::CListCodecPropsDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CListCodecPropsDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CListCodecPropsDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	mProfileManager = NULL;
	mCodecInfo3     = NULL;
}

void CListCodecPropsDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CListCodecPropsDlg)
	DDX_Control(pDX, IDC_EDIT_FORMAT_BUFFERWINDOW, mEditFormatBufferWindow);
	DDX_Control(pDX, IDC_EDIT_FORMAT_BITRATE, mEditFormatBitrate);
	DDX_Control(pDX, IDC_EDIT_CODEC_SUPPORT_VBR, mEditCodecVBRSupported);
	DDX_Control(pDX, IDC_EDIT_CODEC_COMPLEXITY_LIVE, mEditCodecComplexityLive);
	DDX_Control(pDX, IDC_EDIT_CODEC_COMPLEXITY_MAX, mEditCodecComplexityMax);
	DDX_Control(pDX, IDC_EDIT_CODEC_COMPLEXITY_OFFLINE, mEditCodecComplexityOffline);
	DDX_Control(pDX, IDC_EDIT_CODEC_PASSES, mEditCodecPasses);
	DDX_Control(pDX, IDC_EDIT_CODEC_ISVBR, mEditCodecIsVBR);
	DDX_Control(pDX, IDC_EDIT_FORMAT_SPEECHCAPS, mEditFormatSpeechCaps);
	DDX_Control(pDX, IDC_COMBO_FORMAT_DESC, mComboFormatDesc);
	DDX_Control(pDX, IDC_LIST_CODEC_NAME, mListBoxCodecName);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CListCodecPropsDlg, CDialog)
	//{{AFX_MSG_MAP(CListCodecPropsDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_DESTROY()
	ON_LBN_SELCHANGE(IDC_LIST_CODEC_NAME, OnSelchangeListCodecName)
	ON_CBN_SELCHANGE(IDC_COMBO_FORMAT_DESC, OnSelchangeComboFormatDesc)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CListCodecPropsDlg message handlers

BOOL CListCodecPropsDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// Create a profile manager object
	HRESULT hr = WMCreateProfileManager(&mProfileManager);
	if (FAILED(hr))
	{
		AfxMessageBox("Failed to Create a Profile Manager.");
		return FALSE;
	}
	// Get the IWMCodecInfo3 interface
	hr = mProfileManager->QueryInterface(IID_IWMCodecInfo3,	(void**) &mCodecInfo3);
	if (FAILED(hr))
	{
		AfxMessageBox("Failed to Get the IWMCodecInfo3 Interface.");
		return FALSE;
	}
		
	FillCodecNames();
	ReflectCodecProperties();
	if (SUCCEEDED(FillFormatDescs()))
	{		
		ReflectCodecCurrentSettings();
		ReflectFormatProperties();
		ReflectFormatDetails();
	}

	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CListCodecPropsDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CListCodecPropsDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CListCodecPropsDlg::OnDestroy() 
{	
	ReleaseAllStreamConfig();
	SAFE_RELEASE(mProfileManager);
	SAFE_RELEASE(mCodecInfo3);

	CDialog::OnDestroy();		
}

void CListCodecPropsDlg::ReleaseAllStreamConfig(void)
{
	IWMStreamConfig * pConfig = NULL;
	POSITION pos = mStreamConfigList.GetHeadPosition();
	while (pos)
	{
		pConfig = (IWMStreamConfig*) mStreamConfigList.GetNext(pos);
		SAFE_RELEASE(pConfig);
	}
	mStreamConfigList.RemoveAll();
}

void CListCodecPropsDlg::FillCodecNames(void)
{
	mListBoxCodecName.ResetContent();

	GetCodecNames(WMMEDIATYPE_Audio);
	GetCodecNames(WMMEDIATYPE_Video);

	// Select the first item
	if (mListBoxCodecName.GetCount() > 0)
	{
		mListBoxCodecName.SetCurSel(0);
	}
}

HRESULT CListCodecPropsDlg::GetCodecNames(REFGUID inType)
{
	if (mCodecInfo3 == NULL)
	{
		return E_FAIL;
	}

	DWORD   cCodecs  = 0;
	WCHAR*  pwszCodecName  = NULL;
	DWORD   cchCodecName   = 0;
	DWORD   codecType = (inType == WMMEDIATYPE_Audio) ? AudioCodecMask : VideoCodecMask;
    // Retrieve the number of supported codecs on the system.
    HRESULT hr = mCodecInfo3->GetCodecInfoCount(inType, &cCodecs);

	// Loop through all the audio codecs.
	for (DWORD i = 0; i < cCodecs; i++)
	{
		// Get the codec name:
		// First, get the size of the name.
		hr = mCodecInfo3->GetCodecName(inType, i, NULL, &cchCodecName);
		if (FAILED(hr))
		{
			TRACE("Could not get the size of the codec name.\n");
			return hr;
		}

		// Allocate a string of the appropriate size.
		pwszCodecName = new WCHAR[cchCodecName];
		if (pwszCodecName == NULL)
		{
			TRACE("Could not allocate memory.\n");
			return E_OUTOFMEMORY;
		}
		// Retrieve the codec name.
		hr = mCodecInfo3->GetCodecName(inType, i, pwszCodecName, &cchCodecName);
		if (FAILED(hr))
		{
			delete[] pwszCodecName;
			TRACE("Could not get the codec name.\n");
			return hr;
		}

		// Add codec name to the list box
		char szName[100];
		WideCharToMultiByte(CP_ACP, 0, pwszCodecName, -1, szName, 100, NULL, NULL);
		int itemIndex  = mListBoxCodecName.AddString(szName);
		DWORD itemData = codecType | i;
		mListBoxCodecName.SetItemData(itemIndex, itemData);

		// Clean up for the next iteration.
		delete[] pwszCodecName;
		pwszCodecName = NULL;
		cchCodecName  = 0;
	}

	return S_OK;
}

void CListCodecPropsDlg::OnSelchangeListCodecName() 
{
	ReflectCodecProperties();
	if (SUCCEEDED(FillFormatDescs()))
	{		
		ReflectCodecCurrentSettings();
		ReflectFormatProperties();
		ReflectFormatDetails();
	}
}

void CListCodecPropsDlg::OnSelchangeComboFormatDesc() 
{
	if (mCodecInfo3)
	{
		ReflectFormatProperties();
		ReflectFormatDetails(); 
	}	
}

// Retrieves the formats supported by the specified codec. 
// Each codec format is a stream configuration that is valid 
// for use with the codec.
HRESULT CListCodecPropsDlg::FillFormatDescs(void)
{
	if (mCodecInfo3 == NULL)
	{
		return E_FAIL;
	}

	ReleaseAllStreamConfig();
	mComboFormatDesc.ResetContent();
	// Get the selected codec name
	int index = mListBoxCodecName.GetCurSel();
	if (LB_ERR != index)
	{	
		DWORD itemData   = mListBoxCodecName.GetItemData(index);
		DWORD codecIndex = itemData & CodecIndexMask;
		if (itemData & AudioCodecMask)
		{
			// This is an audio codec
			FillAudioFormatDescs(FALSE, 0, codecIndex);
			FillAudioFormatDescs(TRUE, 1, codecIndex);
			FillAudioFormatDescs(TRUE, 2, codecIndex);
		}
		else if (itemData & VideoCodecMask)
		{
			// This is an video codec, then do nothing here!
			// Video codecs provide only a single format. 
			// This is because video streams have variables, 
			// like frame size, that are more flexible 
			// than the settings of an audio stream.
		}
	}

	// Select the first item
	if (mComboFormatDesc.GetCount() > 0)
	{
		mComboFormatDesc.SetCurSel(0);
		mComboFormatDesc.EnableWindow(TRUE);
	}
	else
	{
		mComboFormatDesc.EnableWindow(FALSE);
	}

	return S_OK;
}

HRESULT CListCodecPropsDlg::FillAudioFormatDescs(BOOL inIsVBR, DWORD inPasses, DWORD inCodecIndex)
{
	// Set the VBR settings appropriately
	SetCodecVBRSettings(WMMEDIATYPE_Audio, inCodecIndex, inIsVBR, inPasses);
	DWORD   vbrSettings = inIsVBR ? CodecIsVBRMask : 0;
	vbrSettings |= (inPasses << 16);

	DWORD   cFormats  = 0;
	WCHAR*  pwszFormatDesc = NULL;
	DWORD   cchForamtDesc  = 0;
	// Retrieve the number of supported formats
	HRESULT hr = mCodecInfo3->GetCodecFormatCount(WMMEDIATYPE_Audio, inCodecIndex, &cFormats);

	// Loop through all the audio codecs.