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//-----------------------------------------------------------------------------
// $Id: DecklinkCaptureDlg.cpp,v 1.9 2006/04/11 01:11:07 ivanr Exp $
//
// Desc: DirectShow capture sample
//
// Copyright (c) Blackmagic Design 2005. All rights reserved.
//-----------------------------------------------------------------------------

#include "stdafx.h"
#include "DecklinkCapture.h"
#include "DecklinkCaptureDlg.h"

#include <initguid.h> // TODO: move this to a lib
#include "DecklinkSample_uuids.h"

#undef lstrlenW

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

#define WM_GRAPHNOTIFY WM_APP+1 // for Filter Graph event notification

//-----------------------------------------------------------------------------
// CAboutDlg
//-----------------------------------------------------------------------------

// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
CAboutDlg();

// Dialog Data
enum { IDD = IDD_ABOUTBOX };

protected:
virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


//-----------------------------------------------------------------------------
// CDecklinkCaptureDlg dialog
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Constructor
//
CDecklinkCaptureDlg::CDecklinkCaptureDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDecklinkCaptureDlg::IDD, pParent)
, m_pIVW(NULL)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

//-----------------------------------------------------------------------------
// DoDataExchange
//
void CDecklinkCaptureDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_COMBO_VIDEOFORMATS, m_videoFormatCtrl);
DDX_Control(pDX, IDC_COMBO_AUDIOFORMATS, m_audioFormatCtrl);
DDX_Control(pDX, IDC_STATIC_PREVIEW, m_preview);
DDX_Control(pDX, IDC_EDIT_CAPTUREFILE, m_captureFileCtrl);
DDX_Control(pDX, IDC_COMBO_COMPRESSION, m_compressionCtrl);
DDX_Control(pDX, IDC_COMBO_VIDEODEVICE, m_videoDeviceCtrl);
DDX_Control(pDX, IDC_COMBO_AUDIODEVICE, m_audioDeviceCtrl);
}

BEGIN_MESSAGE_MAP(CDecklinkCaptureDlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
ON_CBN_SELCHANGE(IDC_COMBO_VIDEOFORMATS, OnCbnSelchangeComboVideoformats)
ON_CBN_SELCHANGE(IDC_COMBO_AUDIOFORMATS, OnCbnSelchangeComboAudioformats)
ON_BN_CLICKED(IDC_CHECK_AUDIOMUTE, OnBnClickedCheckAudiomute)
ON_BN_CLICKED(IDC_BUTTON_BROWSE, OnBnClickedButtonBrowse)
ON_BN_CLICKED(IDC_BUTTON_CAPTURE, OnBnClickedButtonCapture)
ON_BN_CLICKED(IDC_BUTTON_STOP, OnBnClickedButtonStop)
ON_CBN_SELCHANGE(IDC_COMBO_COMPRESSION, OnCbnSelchangeComboCompression)
ON_CBN_SELCHANGE(IDC_COMBO_VIDEODEVICE, OnCbnSelchangeComboVideodevice)
ON_CBN_SELCHANGE(IDC_COMBO_AUDIODEVICE, OnCbnSelchangeComboAudiodevice)
END_MESSAGE_MAP()


//-----------------------------------------------------------------------------
// CDecklinkCaptureDlg message handlers
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// OnInitDialog
// Called before the dialog is displayed, use this message handler to initialise
// our app
BOOL CDecklinkCaptureDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Add "About..." menu item to system menu.

// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);

CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}

// 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 basic capture graph and preview the incoming video
m_pGraph = NULL;
m_pVideoCapture = NULL;
m_pAudioCapture = NULL;
m_pVideoRenderer = NULL;
m_pSmartT = NULL;

m_pControl = NULL;

m_pIVW = NULL;
m_pMediaEvent = NULL;

m_ROTRegister = 0;
m_bAudioMute = FALSE;
m_compressor = 0;
m_bEnableCompressionCtrl = TRUE;

m_captureFile = "<Select File>";

// initialise default video media type
ZeroMemory(&m_vihDefault, sizeof(m_vihDefault));
m_vihDefault.AvgTimePerFrame = 333667;
m_vihDefault.bmiHeader.biWidth = 720;
m_vihDefault.bmiHeader.biHeight = 486;
m_vihDefault.bmiHeader.biBitCount = 16;
m_vihDefault.bmiHeader.biCompression = 'YVYU';

// initialise default audio media type
ZeroMemory(&m_wfexDefault, sizeof(m_wfexDefault));
m_wfexDefault.nChannels = 2; // the only field of interest

// retrieve last state
QueryRegistry();

m_captureFileCtrl.SetWindowText(m_captureFile);

EnableControls();

// create a preview graph
// add the filters that will be used by all the graphs; preview, uncompressed capture, dv capture,
// mpeg capture and windows media capture
HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, reinterpret_cast<void**>(&m_pGraph));
if (SUCCEEDED(hr))
{
#ifdef _DEBUG
hr = CDSUtils::AddGraphToRot(m_pGraph, &m_ROTRegister);
#endif
hr = m_pGraph->QueryInterface(IID_IMediaControl, reinterpret_cast<void**>(&m_pControl));
if (SUCCEEDED(hr))
{
// locate the video capture devices
hr = PopulateDeviceControl(&CLSID_VideoInputDeviceCategory, &m_videoDeviceCtrl);
if (SUCCEEDED(hr))
{
hr = PopulateDeviceControl(&CLSID_AudioInputDeviceCategory, &m_audioDeviceCtrl);
if (SUCCEEDED(hr))
{
PWSTR pVideoName = (PWSTR)m_videoDeviceCtrl.GetItemData(m_videoDeviceCtrl.SetCurSel(0));
PWSTR pAudioName = (PWSTR)m_audioDeviceCtrl.GetItemData(m_audioDeviceCtrl.SetCurSel(0));
if (pVideoName && pAudioName)
{
hr = CDSUtils::AddFilter2(m_pGraph, CLSID_VideoInputDeviceCategory, pVideoName, &m_pVideoCapture);
if (SUCCEEDED(hr))
{
hr = CDSUtils::AddFilter2(m_pGraph, CLSID_AudioInputDeviceCategory, pAudioName, &m_pAudioCapture);
if (SUCCEEDED(hr))
{
PopulateVideoControl(); // populate the video format control with the video formats of the currently selected device
PopulateAudioControl(); // populate the audio format control with the audio formats of the currently selected device
PopulateCompressionControl();

// locate video screen renderer for the preview window
hr = CDSUtils::AddFilter(m_pGraph, CLSID_VideoRendererDefault, L"Video Renderer", &m_pVideoRenderer);
if (SUCCEEDED(hr))
{
hr = CreatePreviewGraph();
}
}
}
}
}
}
}
}

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

//-----------------------------------------------------------------------------
// DestroyWindow
// Called when the window is being destroyed, clean up and free all resources.
BOOL CDecklinkCaptureDlg::DestroyWindow()
{
m_regUtils.Close();
#ifdef _DEBUG
CDSUtils::RemoveGraphFromRot(m_ROTRegister);
#endif
DestroyGraph();

SAFE_RELEASE(m_pControl);

// Hide Video Window and remove owner. This has to be done prior to
// destroying any window that displays video/still.
if (m_pIVW)
{
m_pIVW->put_Visible(OAFALSE);
m_pIVW->put_Owner(NULL);
}

SAFE_RELEASE(m_pIVW);
SAFE_RELEASE(m_pMediaEvent);

SAFE_RELEASE(m_pVideoRenderer);
SAFE_RELEASE(m_pAudioCapture);
SAFE_RELEASE(m_pVideoCapture);

SAFE_RELEASE(m_pGraph);

// free mediatypes attached to format controls
int count = m_videoFormatCtrl.GetCount();
for (int item=0; item<count; ++item)
{
DeleteMediaType((AM_MEDIA_TYPE*)m_videoFormatCtrl.GetItemData(item));
}

count = m_audioFormatCtrl.GetCount();
for (int item=0; item<count; ++item)
{
DeleteMediaType((AM_MEDIA_TYPE*)m_audioFormatCtrl.GetItemData(item));
}

// release the device names attached to the item's data
count = m_videoDeviceCtrl.GetCount();
for (item=0; item<count; ++item)
{
PWSTR pName = (PWSTR)m_videoDeviceCtrl.GetItemData(item);
delete [] pName;
}

count = m_audioDeviceCtrl.GetCount();
for (item=0; item<count; ++item)
{
PWSTR pName = (PWSTR)m_audioDeviceCtrl.GetItemData(item);
delete [] pName;
}

return CDialog::DestroyWindow();
}

//-----------------------------------------------------------------------------
// OnSysCommand
//
void CDecklinkCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}

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

SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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();
}
}

//-----------------------------------------------------------------------------
// HandleGraphEvent
// At the moment we just read the event, discard it and release memory used to store it.
void CDecklinkCaptureDlg::HandleGraphEvent(void)
{
LONG lEventCode, lEventParam1, lEventParam2;

if (!m_pMediaEvent)
{
return;
}

while (SUCCEEDED(m_pMediaEvent->GetEvent(&lEventCode, reinterpret_cast<LONG_PTR *>(&lEventParam1), reinterpret_cast<LONG_PTR *>(&lEventParam2), 0)))
{
// just free memory associated with event
m_pMediaEvent->FreeEventParams(lEventCode, lEventParam1, lEventParam2);
}
}

//-----------------------------------------------------------------------------
// WindowProc
// Have to add our own message handling loop to handle events from the preview video
// window and to pass Window events onto it - this is so it redraws itself correctly etc.
LRESULT CDecklinkCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_GRAPHNOTIFY:
HandleGraphEvent();
break;
}

// Pass all msgs to video window. vid window exists as child of static
// picture frame. This ensures video window redraws itself etc.
if (m_pIVW)
{
m_pIVW->NotifyOwnerMessage(reinterpret_cast<LONG_PTR>(m_hWnd) /* from me */, message, wParam, lParam);
}

return CDialog::WindowProc(message, wParam, lParam);
}

//-----------------------------------------------------------------------------
// OnQueryDragIcon
// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDecklinkCaptureDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}

//-----------------------------------------------------------------------------
// CreatePreviewGraph
// Create a graph to preview the input
// NOTE: There are many ways of building graphs, you could opt for the ICaptureGraphBuilder interface which would
// make things are lot simpler, however it doesn't always build the most efficient graphs.
HRESULT CDecklinkCaptureDlg::CreatePreviewGraph()
{
HRESULT hr = S_OK;

if (m_pGraph)
{
// locate smart-T
// NOTE: The smart-T appears to hold references to its upstream connections even when its input pin
// is diconnected.  The smart-T has to be removed from the graph in order to clear these references which
// is why the filter is enumerated and added every time the preview graph is built and removed whenever
// it is destroyed.
ASSERT(NULL == m_pSmartT);
hr = CDSUtils::AddFilter(m_pGraph, CLSID_SmartTee, L"Smart Tee", &m_pSmartT);
if (SUCCEEDED(hr))
{
// DV preview is slightly different to all other previews
if (ENC_DV != m_compressionCtrl.GetItemData(m_compressionCtrl.GetCurSel()))
{
// uncompressed, mpeg and wm preview
// create the following:
//
//  Decklink Video Capture -> Smart-T -> AVI Decompressor -> Video Renderer
//  Decklink Audio Capture -> Default Audio Renderer
//

// render the preview pin on the smart-T filter
// first connect the Decklink video capture pin to the smart-T
hr = CDSUtils::ConnectFilters(m_pGraph, m_pVideoCapture, NULL, m_pSmartT, NULL);
if (SUCCEEDED(hr))
{
// now connect the preview pin of the smart-T to the video renderer
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, L"Preview", m_pVideoRenderer, NULL);
}
}
else
{
// DV Preview
// create the following:
//
//  Decklink Video Capture -> AVI Decompressor -> Smart-T -> Colour Space Converter -> Video Renderer
//  Decklink Audio Capture -> Default Audio Renderer
//
// this is a more efficient graph than created by the ICaptureGraphBuilder2 interface

// add the AVI decompressor and colour space converter filters
CComPtr<IBaseFilter> pAVIDecompressor = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_AVIDec, L"AVI Decompressor", &pAVIDecompressor);
if (SUCCEEDED(hr))
{
CComPtr<IBaseFilter> pColourSpaceConverter = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_Colour, L"Color Space Converter", &pColourSpaceConverter);
if (SUCCEEDED(hr))
{
// conect the Decklink video capture pin to the AVI decompressor
hr = CDSUtils::ConnectFilters(m_pGraph, m_pVideoCapture, NULL, pAVIDecompressor, NULL);
if (SUCCEEDED(hr))
{
// connect AVI decompressor to the smart-T
hr = CDSUtils::ConnectFilters(m_pGraph, pAVIDecompressor, NULL, m_pSmartT, NULL);
if (SUCCEEDED(hr))
{
// connect the preview pin of the smart-T to the colour space converter
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, L"Preview", pColourSpaceConverter, NULL);
if (SUCCEEDED(hr))
{
// connect the colour space converter to the video renderer
hr = CDSUtils::ConnectFilters(m_pGraph, pColourSpaceConverter, NULL, m_pVideoRenderer, NULL);
}
}
}
}
}
}
}
}
else
{
hr = E_POINTER;
}

if (SUCCEEDED(hr))
{
// the video path has been connected, initialise the preview window
InitialiseVideoPreview();

// optionally connect the audio path
if (FALSE == m_bAudioMute)
{
// connect the Decklink audio capture pin to the mux
hr = CDSUtils::RenderFilter(m_pGraph, m_pAudioCapture, L"Capture");
}

// run the graph so that we can preview the input video
if (m_pControl)
{
hr = m_pControl->Run();
}
else
{
hr = E_POINTER;
}
}

return hr;
}

//-----------------------------------------------------------------------------
// CreateCaptureGraph
// Create a graph to capture the input
HRESULT CDecklinkCaptureDlg::CreateCaptureGraph()
{
HRESULT hr = S_OK;

// tack the file writer onto the preview graph
if (m_pGraph && m_pControl)
{
// stop the graph as we are about to modify it
m_pControl->Stop();

// remove the default audio renderer so the Decklink audio capture filter
// can be connected to the AVI mux, we will not preview audio whilst capturing
CComPtr<IPin> pIPinOutput = NULL;
hr = CDSUtils::GetPin(m_pAudioCapture, L"Capture", &pIPinOutput);
if (SUCCEEDED(hr))
{
// to disconnect both pins must be disconnected
// find the pin connected to the Decklink audio capture pin
CComPtr<IPin> pIPinConnection = NULL;
hr = pIPinOutput->ConnectedTo(&pIPinConnection);
if (SUCCEEDED(hr))
{
// disconnect the pins
hr = m_pGraph->Disconnect(pIPinOutput);
hr = m_pGraph->Disconnect(pIPinConnection);

// get the owning filter of the downstream pin and remove it from the graph
PIN_INFO pinInfo = {0};
hr = pIPinConnection->QueryPinInfo(&pinInfo);
if (SUCCEEDED(hr))
{
if (pinInfo.pFilter)
{
hr = m_pGraph->RemoveFilter(pinInfo.pFilter);
pinInfo.pFilter->Release();
}
}
}
}

// retrieve the capture filename
m_captureFileCtrl.GetWindowText(m_captureFile);
// store filename
USES_CONVERSION;
WCHAR captureFile[MAX_PATH];
wcsncpy(captureFile, A2W(m_captureFile), MAX_PATH);
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetString("CaptureFile", reinterpret_cast<const BYTE*>(captureFile), sizeof(captureFile)));

// decide the type of capture graph to build
switch (m_compressionCtrl.GetItemData(m_compressionCtrl.GetCurSel()))
{
default:
case ENC_NONE:
hr = CreateUncompressedCaptureGraph();
break;

case ENC_DV:
hr = CreateDVCaptureGraph();
break;

case ENC_WM:
hr = CreateWMCaptureGraph();
break;
}

if (FAILED(hr))
{
// there was a problem building the capture graph, issue a message
// and rebuild preview graph
char buffer[128];
StringCbPrintfA(buffer, sizeof(buffer), "The error 0x%08lx was detected when creating the capture graph with the following file name:\r\n\r\n'%s'", hr, m_captureFile);
MessageBox(buffer, _T("Error"), MB_ICONERROR);
OnBnClickedButtonStop(); // destroy broken capture graph, build preview graph and enable controls
}
}
else
{
hr = E_POINTER;
}

return hr;
}

//-----------------------------------------------------------------------------
// CreateUncompressedCaptureGraph
// Create an optimum uncompressed capture graph
HRESULT CDecklinkCaptureDlg::CreateUncompressedCaptureGraph()
{
HRESULT hr = S_OK;

// uncompressed capture
// locate the AVI mux and file writer filters and add them to the graph
CComPtr<IBaseFilter> pAVIMux = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_AviDest , L"AVI Mux", &pAVIMux);
if (SUCCEEDED(hr))
{
CComPtr<IBaseFilter> pFileWriter = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_FileWriter, L"File writer", &pFileWriter);
if (SUCCEEDED(hr))
{
// set the output filename
CComQIPtr<IFileSinkFilter, &IID_IFileSinkFilter> pIFS = pFileWriter;
if (pIFS)
{
USES_CONVERSION; // for T2W macro
hr = pIFS->SetFileName(T2W(m_captureFile), NULL);
if (SUCCEEDED(hr))
{
// connect the smart-T capture pin to the mux
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, L"Capture", pAVIMux, NULL);
if (SUCCEEDED(hr))
{
// connect the mux to the file writer
hr = CDSUtils::ConnectFilters(m_pGraph, pAVIMux, NULL, pFileWriter, NULL);
if (SUCCEEDED(hr))
{
// video path connected now optionally connect the audio path
if (FALSE == m_bAudioMute)
{
// connect the Decklink audio capture pin to the mux
hr = CDSUtils::ConnectFilters(m_pGraph, m_pAudioCapture, L"Capture", pAVIMux, NULL);
}

if (SUCCEEDED(hr))
{
m_pControl->Run();
}
}
}
}
}
}
}

return hr;
}

//-----------------------------------------------------------------------------
// CreateDVCaptureGraph
// Create an optimum DV capture graph
// NOTE: that this will only work for SD
HRESULT CDecklinkCaptureDlg::CreateDVCaptureGraph()
{
HRESULT hr = S_OK;

// locate the DV encoder, AVI mux and file writer filters and add them to the graph
CComPtr<IBaseFilter> pDVEncoder = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_DVVideoEnc, L"DV Video Encoder", &pDVEncoder);
if (SUCCEEDED(hr))
{
CComPtr<IBaseFilter> pAVIMux = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_AviDest , L"AVI Mux", &pAVIMux);
if (SUCCEEDED(hr))
{
CComPtr<IBaseFilter> pFileWriter = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_FileWriter, L"File writer", &pFileWriter);
if (SUCCEEDED(hr))
{
// set the output filename
CComQIPtr<IFileSinkFilter, &IID_IFileSinkFilter> pIFS = pFileWriter;
if (pIFS)
{
USES_CONVERSION; // for T2W macro
hr = pIFS->SetFileName(T2W(m_captureFile), NULL);
if (SUCCEEDED(hr))
{
// configure the DV encoder
CComQIPtr<IDVEnc, &IID_IDVEnc> pIDV = pDVEncoder;
if (pIDV)
{
// located a DV compression filter, set the format
int videoFormat, dvFormat, resolution;
hr = pIDV->get_IFormatResolution(&videoFormat, &dvFormat, &resolution, FALSE, NULL);
if (SUCCEEDED(hr))
{
ASSERT(DVENCODERFORMAT_DVSD == dvFormat);
ASSERT(DVENCODERRESOLUTION_720x480 == resolution);

if ((DVENCODERVIDEOFORMAT_NTSC == videoFormat) && (576 == m_vihDefault.bmiHeader.biHeight))
{
// set the encoder to PAL if its NTSC
videoFormat = DVENCODERVIDEOFORMAT_PAL;
hr = pIDV->put_IFormatResolution(videoFormat, dvFormat, resolution, FALSE, NULL);
}
else if ((DVENCODERVIDEOFORMAT_PAL == videoFormat) && (486 == m_vihDefault.bmiHeader.biHeight))
{
// set the encoder to NTSC if its PAL
videoFormat = DVENCODERVIDEOFORMAT_NTSC;
hr = pIDV->put_IFormatResolution(videoFormat, dvFormat, resolution, FALSE, NULL);
}
}
}

if (SUCCEEDED(hr))
{
// if the format is PAL, insert the Decklink field swap filter, PAL DV is the opposite
// field order to PAL SD
if (576 == m_vihDefault.bmiHeader.biHeight)
{
CComPtr<IBaseFilter> pPALFieldSwap = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_DecklinkFieldSwap, L"Decklink PAL Field Swap", &pPALFieldSwap);
if (SUCCEEDED(hr))
{
// connect the smart-T capture pin to the PAL field swap filter
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, L"Capture", pPALFieldSwap, NULL);
if (SUCCEEDED(hr))
{
// connect the field swap filter to the DV encoder
hr = CDSUtils::ConnectFilters(m_pGraph, pPALFieldSwap, NULL, pDVEncoder, NULL);
}
}
}
else
{
// connect the smart-T capture pin to the DV Encoder
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, L"Capture", pDVEncoder, NULL);
}

if (SUCCEEDED(hr))
{
// connect the DV encoder output to the AVI mux
hr = CDSUtils::ConnectFilters(m_pGraph, pDVEncoder, NULL, pAVIMux, NULL);
if (SUCCEEDED(hr))
{
// connect the mux to the file writer
hr = CDSUtils::ConnectFilters(m_pGraph, pAVIMux, NULL, pFileWriter, NULL);
if (SUCCEEDED(hr))
{
// video path connected now optionally connect the audio path
if (FALSE == m_bAudioMute)
{
// connect the Decklink audio capture pin to the mux
hr = CDSUtils::ConnectFilters(m_pGraph, m_pAudioCapture, L"Capture", pAVIMux, NULL);
}

if (SUCCEEDED(hr))
{
m_pControl->Run();
}
}
}
}
}
}
}
}
}
}

return hr;
}

//-----------------------------------------------------------------------------
// CreateWMCaptureGraph
// Create an optimum Windows Media capture graph
HRESULT CDecklinkCaptureDlg::CreateWMCaptureGraph()
{
HRESULT hr = S_OK;

// locate the asf writer filter and add it to the graph
CComPtr<IBaseFilter> pASFWriter = NULL;
hr = CDSUtils::AddFilter(m_pGraph, CLSID_WMAsfWriter, L"WM ASF Writer", &pASFWriter);
if (SUCCEEDED(hr))
{
// set the output filename
CComQIPtr<IFileSinkFilter, &IID_IFileSinkFilter> pIFS = pASFWriter;
if (pIFS)
{
USES_CONVERSION; // for T2W macro
hr = pIFS->SetFileName(T2W(m_captureFile), NULL);
if (SUCCEEDED(hr))
{
hr = ConfigureWMEncoder(pASFWriter);
}
}

if (SUCCEEDED(hr))
{
if (FALSE == m_bAudioMute)
{
// connect the Decklink audio capture pin to the ASF writer
hr = CDSUtils::ConnectFilters(m_pGraph, m_pAudioCapture, pASFWriter, &MEDIATYPE_Audio);
}

if (SUCCEEDED(hr))
{
// connect the smart-T capture pin to the ASF writer
hr = CDSUtils::ConnectFilters(m_pGraph, m_pSmartT, pASFWriter, &MEDIATYPE_Video);

if (SUCCEEDED(hr))
{
m_pControl->Run();
}
}
}
}

return hr;
}

//-----------------------------------------------------------------------------
// ConfigureWMEncoder
// Configure the Windows Media encoder
HRESULT CDecklinkCaptureDlg::ConfigureWMEncoder(IBaseFilter* pASFWriter)
{
HRESULT hr = S_OK;

// modify the video output resolution of a system profile
if (pASFWriter)
{
// simple system profile encoding
CComQIPtr<IConfigAsfWriter, &IID_IConfigAsfWriter> pICW = pASFWriter;
if (pICW)
{
// NOTE: You could just use the following for a default system profile
// hr = pICW->ConfigureFilterUsingProfileGuid(WMProfile_XXX); // RE: wmsysprf.h

// NOTE: If you want video only capture you must modify the profile to remove the audio
//   otherwise encoding will fail

// Load a system profile and modify the resolution of the video output
// NOTE: The scope of the encoding is enormous, this just demonstrates how to change
// the output video resolution from 320x240 to something larger.
// Changing the resolution affects coding performance, it is likely that the encoder will
// start to drop frames after a while.  Using WM9 codecs will probably improve performance
// and that has been left to the reader... ;o)
//
// get a profile manager
CComPtr<IWMProfileManager> pIWMProfileManager = NULL;
hr = WMCreateProfileManager(&pIWMProfileManager);
if (SUCCEEDED(hr))
{
// load a system profile to modify
CComPtr<IWMProfile> pIWMProfile = NULL;
// NOTE: Any WMProfile_XXX could be used here, or create a custom profile from scratch
hr = pIWMProfileManager->LoadProfileByID(WMProfile_V80_FAIRVBRVideo, &pIWMProfile);
if (SUCCEEDED(hr))
{
// search the streams for the video stream and attempt to modify the video size
DWORD cbStreams = 0;
hr = pIWMProfile->GetStreamCount(&cbStreams);
if (SUCCEEDED(hr))
{
IWMStreamConfig* pIWMStreamConfig = NULL;
GUID streamType = {0};
DWORD stream;

if (m_bAudioMute)
{
// remove the audio stream for video only capture
for (stream=0; stream<cbStreams; ++stream)
{
hr = pIWMProfile->GetStream(stream, &pIWMStreamConfig);
if (SUCCEEDED(hr))
{
hr = pIWMStreamConfig->GetStreamType(&streamType);
if (SUCCEEDED(hr))
{
if (MEDIATYPE_Audio == streamType)
{
if (SUCCEEDED(pIWMProfile->RemoveStream(pIWMStreamConfig)))
{
--cbStreams;
}
SAFE_RELEASE(pIWMStreamConfig);
break;
}
}
}
}
}

for (stream=0; stream<cbStreams; ++stream)
{
hr = pIWMProfile->GetStream(stream, &pIWMStreamConfig);
if (SUCCEEDED(hr))
{
hr = pIWMStreamConfig->GetStreamType(&streamType);
if (SUCCEEDED(hr) && (MEDIATYPE_Video == streamType))
{
// found the video stream
CComQIPtr<IWMMediaProps, &IID_IWMMediaProps> pIWMMediaProps = pIWMStreamConfig;
if (pIWMMediaProps)
{
// get the size of the media type
WM_MEDIA_TYPE* pMediaType = NULL;
DWORD cbMediaType = 0;
hr = pIWMMediaProps->GetMediaType(pMediaType, &cbMediaType);
if (SUCCEEDED(hr))
{
pMediaType = (WM_MEDIA_TYPE*)new char [cbMediaType];
if (pMediaType)
{
hr = pIWMMediaProps->GetMediaType(pMediaType, &cbMediaType);
if (SUCCEEDED(hr))
{
BITMAPINFOHEADER* pbmih = NULL;
if (WMFORMAT_VideoInfo == pMediaType->formattype)
{
WMVIDEOINFOHEADER* pvih = (WMVIDEOINFOHEADER*)pMediaType->pbFormat;
pbmih = &pvih->bmiHeader;
}
else if (WMFORMAT_MPEG2Video == pMediaType->formattype)
{

WMVIDEOINFOHEADER2* pvih = (WMVIDEOINFOHEADER2*)&((WMMPEG2VIDEOINFO*)pMediaType->pbFormat)->hdr;
pbmih = &pvih->bmiHeader;
}

if (pbmih)
{
// modify the video dimensions, set the property, reconfigure the stream
// and then configure the ASF writer with this modified profile
pbmih->biWidth = 640; // was 320;
pbmih->biHeight = 480; // was 240;
pbmih->biSizeImage = pbmih->biWidth * pbmih->biHeight * pbmih->biBitCount / 8; // NOTE: This calculation is not correct for all bit depths
hr = pIWMMediaProps->SetMediaType(pMediaType);
if (SUCCEEDED(hr))
{
// config the ASF writer filter to use this modified system profile
hr = pIWMProfile->ReconfigStream(pIWMStreamConfig);
if (SUCCEEDED(hr))
{
hr = pICW->ConfigureFilterUsingProfile(pIWMProfile);
}
}
}
}
delete [] (char*)pMediaType;
}
}
}
}
SAFE_RELEASE(pIWMStreamConfig);
}
}
}
}
}
/*
// modify other ASF writer properties
IServiceProvider* pProvider = NULL;
hr = pASFWriter->QueryInterface(IID_IServiceProvider, reinterpret_cast<void**>(&pProvider));
if (SUCCEEDED(hr))
{
IID_IWMWriterAdvanced2* pWMWA2 = NULL;
hr = pProvider->QueryService(IID_IID_IWMWriterAdvanced2, IID_IID_IWMWriterAdvanced2, reinterpret_cast<void**>(&pWMWA2));
if (SUCCEEDED(hr))
{
// set the deinterlace mode
pWMWA2->GetInputSetting(...);
:
:
SAFE_RELEASE(pWMWA2);
}
SAFE_RELEASE(pProvider);
}
*/
}
}
else
{
hr = E_INVALIDARG;
}

return hr;
}

//-----------------------------------------------------------------------------
// DestroyGraph
// Remove all intermediate filters, keep any Decklink and video render filters as
// these are used by all the graphs.
HRESULT CDecklinkCaptureDlg::DestroyGraph()
{
HRESULT hr = S_OK;

if (m_pGraph && m_pControl)
{
m_pControl->Stop();

// release our outstanding reference on this filter so it can be removed from the graph
SAFE_RELEASE(m_pSmartT);

// retrieve the name of the capture device, don't remove it in this method
PWSTR pNameVideoCapture = (PWSTR)m_videoDeviceCtrl.GetItemData(m_videoDeviceCtrl.GetCurSel());
PWSTR pNameAudioCapture = (PWSTR)m_audioDeviceCtrl.GetItemData(m_audioDeviceCtrl.GetCurSel());

CComPtr<IEnumFilters> pEnum = NULL;
hr = m_pGraph->EnumFilters(&pEnum);
if (SUCCEEDED(hr))
{
IBaseFilter* pFilter = NULL;
while (S_OK == pEnum->Next(1, &pFilter, NULL))
{
FILTER_INFO filterInfo = {0};
hr = pFilter->QueryFilterInfo(&filterInfo);
if (SUCCEEDED(hr))
{
SAFE_RELEASE(filterInfo.pGraph);

if ((NULL == wcsstr(filterInfo.achName, pNameVideoCapture)) && (NULL == wcsstr(filterInfo.achName, pNameAudioCapture)) && (NULL == wcsstr(filterInfo.achName, L"Video Renderer")))
{
hr = m_pGraph->RemoveFilter(pFilter);
if (SUCCEEDED(hr))
{
hr = pEnum->Reset();
}
}
}
SAFE_RELEASE(pFilter);
}
}
}
else
{
hr = E_POINTER;
}

return hr;
}

//-----------------------------------------------------------------------------
// InitialiseVideoPreview
// In short get the video screen renderer to draw into the picture control, which is our preview window
// the following code sets this up, in addition to adding the HandleGraphEvent and WindowProc methods
// read the DXSDK docos for more detailed information
void CDecklinkCaptureDlg::InitialiseVideoPreview(void)
{
// modify the preview window
if (m_pVideoRenderer)
{
if (NULL == m_pIVW)
{
if (SUCCEEDED(m_pVideoRenderer->QueryInterface(IID_IVideoWindow, reinterpret_cast<void**>(&m_pIVW))))
{
// get the window to handle redraws, etc
// Set msg drain of VideoWindow to point to our dialog window. The dialog's
// window procedure then handles events from the VideoWindow.
HRESULT hr = m_pIVW->put_MessageDrain(reinterpret_cast<OAHWND>(m_hWnd));

if (NULL == m_pMediaEvent)
{
// Make graph send WM_GRAPHNOTIFY when it wants our attention see "Learning
// When an Event Occurs" in the DX9 documentation.
hr = m_pGraph->QueryInterface(IID_IMediaEventEx, reinterpret_cast<void**>(&m_pMediaEvent));
if (SUCCEEDED(hr))
{
hr = m_pMediaEvent->SetNotifyWindow(reinterpret_cast<OAHWND>(m_hWnd), WM_GRAPHNOTIFY, 0);
}

// object created for it.
RECT rc;
m_preview.GetClientRect(&rc);
m_pIVW->SetWindowPosition(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);

// VideoWindow is a child window of the bounding rect
hr = m_pIVW->put_WindowStyle(WS_CHILD);
hr = m_pIVW->put_Owner(reinterpret_cast<OAHWND>(m_preview.GetSafeHwnd()));
hr = m_pIVW->SetWindowForeground(-1);
}
}
}
}
}

//-----------------------------------------------------------------------------
// PopulateDeviceControl
// Fill device combo box with available devices of the specified category
HRESULT CDecklinkCaptureDlg::PopulateDeviceControl(const GUID* pCategory, CComboBox* pCtrl)
{
HRESULT hr = S_OK;
if (pCategory && pCtrl)
{
// first enumerate the system devices for the specifed class and filter name
CComPtr<ICreateDevEnum> pSysDevEnum = NULL;
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, reinterpret_cast<void**>(&pSysDevEnum));

if (SUCCEEDED(hr))
{
CComPtr<IEnumMoniker> pEnumCat = NULL;
hr = pSysDevEnum->CreateClassEnumerator(*pCategory, &pEnumCat, 0);

if (S_OK == hr)
{
IMoniker* pMoniker = NULL;
bool Loop = true;
while ((S_OK == pEnumCat->Next(1, &pMoniker, NULL)) && Loop)
{
IPropertyBag* pPropBag = NULL;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, reinterpret_cast<void**>(&pPropBag));

if (SUCCEEDED(hr))
{
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr))
{
size_t len = wcslen(varName.bstrVal) + 1;
PWSTR pName = new WCHAR [len];
StringCchCopyW(pName, len, varName.bstrVal);
CW2AEX<> buf(varName.bstrVal);
pCtrl->SetItemData(pCtrl->AddString(buf), (DWORD)pName);
}

VariantClear(&varName);

// contained within a loop, decrement the reference count
SAFE_RELEASE(pPropBag);
}
SAFE_RELEASE(pMoniker);
}
}
}
}
else
{
hr = E_POINTER;
}

return hr;
}

//-----------------------------------------------------------------------------
// PopulateVideoControl
// Fill video format combo box with supported video formats using the IAMStreamConfig
// interface.
HRESULT CDecklinkCaptureDlg::PopulateVideoControl()
{
HRESULT hr = S_OK;

if (m_pVideoCapture)
{
// free mediatypes attached to format controls
int count = m_videoFormatCtrl.GetCount();
if (count)
{
for (int item=0; item<count; ++item)
{
DeleteMediaType((AM_MEDIA_TYPE*)m_videoFormatCtrl.GetItemData(item));
}
m_videoFormatCtrl.ResetContent();
}

// locate the video capture pin and QI for stream control
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pVideoCapture, &MEDIATYPE_Video, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
    if (SUCCEEDED(hr))
    {
// loop through all the capabilities (video formats) and populate the control
int count, size;
hr = pISC->GetNumberOfCapabilities(&count, &size);
if (SUCCEEDED(hr))
{
if (sizeof(VIDEO_STREAM_CONFIG_CAPS) == size)
{
AM_MEDIA_TYPE* pmt = NULL;
VIDEO_STREAM_CONFIG_CAPS vscc;
VIDEOINFOHEADER* pvih = NULL;

for (int index=0; index<count; ++index)
{
hr = pISC->GetStreamCaps(index, &pmt, reinterpret_cast<BYTE*>(&vscc));
if (SUCCEEDED(hr))
{
char buffer[128];
WORD PixelFormat;
float FrameRate;

ZeroMemory(buffer, sizeof(buffer));

pvih = (VIDEOINFOHEADER*)pmt->pbFormat;

char* pPixelFormatLUT[] = {"4:2:2", "4:4:4"};
if (pvih->bmiHeader.biBitCount == 16) PixelFormat = 8;
else if (pvih->bmiHeader.biBitCount == 20) PixelFormat = 10;
else PixelFormat = pvih->bmiHeader.biBitCount;

// provide a useful description of the formats
if (486 == pvih->bmiHeader.biHeight)
{
if (417083 == pvih->AvgTimePerFrame)
{
StringCbPrintfA(buffer, sizeof(buffer), "NTSC %d-bit %s (3:2 pulldown removal)", PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "NTSC %d-bit %s", PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
}
else if (576 == pvih->bmiHeader.biHeight)
{
StringCbPrintfA(buffer, sizeof(buffer), "PAL %d-bit %s", PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
char* pFrameRateFormat[] = {"%.2f", "%.0f"};
FrameRate = (float)(long)UNITS / pvih->AvgTimePerFrame;

if ((720 == pvih->bmiHeader.biHeight) && (59.94 > FrameRate))
{
if ((FrameRate - (int)FrameRate) > 0.01)
{
StringCbPrintfA(buffer, sizeof(buffer), "HD720 %.2fp %d-bit %s (Overcranked 60p)", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "HD720 %.0fp %d-bit %s (Overcranked 60p)", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
}
else if ((720 == pvih->bmiHeader.biHeight) && (59.94 <= FrameRate))
{
if ((FrameRate - (int)FrameRate) > 0.01)
{
StringCbPrintfA(buffer, sizeof(buffer), "HD720 %.2fp %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "HD720 %.0fp %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
}
else if ((1080 == pvih->bmiHeader.biHeight) && (50.00 <= FrameRate))
{
if ((FrameRate - (int)FrameRate) > 0.01)
{
StringCbPrintfA(buffer, sizeof(buffer), "HD1080 %.2fi %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "HD1080 %.0fi %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
}
else
{
if ((FrameRate - (int)FrameRate) > 0.01)
{
StringCbPrintfA(buffer, sizeof(buffer), "HD1080 %.2fPsF %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "HD1080 %.0fPsF %d-bit %s", FrameRate, PixelFormat, pPixelFormatLUT[(30 == PixelFormat)]);
}
}
}

// add the item description to combo box
int n = m_videoFormatCtrl.AddString(buffer);
// store media type pointer in item's data section
m_videoFormatCtrl.SetItemData(n, (DWORD_PTR)pmt);

// set default format
if ((pvih->AvgTimePerFrame == m_vihDefault.AvgTimePerFrame) &&
(pvih->bmiHeader.biWidth == m_vihDefault.bmiHeader.biWidth) &&
(pvih->bmiHeader.biHeight == m_vihDefault.bmiHeader.biHeight) &&
(pvih->bmiHeader.biBitCount == m_vihDefault.bmiHeader.biBitCount))
{
m_videoFormatCtrl.SetCurSel(n);
pISC->SetFormat(pmt);
}
}
}
}
else
{
m_videoFormatCtrl.AddString("ERROR: Unable to retrieve video formats");
}
}
}
}
else
{
hr = E_POINTER;
}

return hr;
}

//-----------------------------------------------------------------------------
// PopulateAudioControl
// Fill audio format combo box with supported audio formats using the IAMStreamConfig
// interface.
HRESULT CDecklinkCaptureDlg::PopulateAudioControl()
{
HRESULT hr = S_OK;

if (m_pAudioCapture)
{
// free mediatypes attached to format controls
int count = m_audioFormatCtrl.GetCount();
if (count)
{
for (int item=0; item<count; ++item)
{
DeleteMediaType((AM_MEDIA_TYPE*)m_audioFormatCtrl.GetItemData(item));
}
m_audioFormatCtrl.ResetContent();
}

// locate the audio capture pin and QI for stream control
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pAudioCapture, &MEDIATYPE_Audio, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
    if (SUCCEEDED(hr))
    {
// loop through all the capabilities (audio formats) and populate the control
int count, size;
hr = pISC->GetNumberOfCapabilities(&count, &size);
if (SUCCEEDED(hr))
{
if (sizeof(AUDIO_STREAM_CONFIG_CAPS) == size)
{
AM_MEDIA_TYPE* pmt = NULL;
AUDIO_STREAM_CONFIG_CAPS ascc;
WAVEFORMATEX* pwfex = NULL;

for (int index=0; index<count; ++index)
{
hr = pISC->GetStreamCaps(index, &pmt, reinterpret_cast<BYTE*>(&ascc));
if (SUCCEEDED(hr))
{
char buffer[32];

ZeroMemory(buffer, sizeof(buffer));

pwfex = (WAVEFORMATEX*)pmt->pbFormat;

// provide a useful description of the formats
if (1 == pwfex->nChannels)
{
StringCbPrintfA(buffer, sizeof(buffer), "%d channel, %2.1fkHz, %d-bit", (int)pwfex->nChannels, (float)pwfex->nSamplesPerSec / 1000, (int)pwfex->wBitsPerSample);
}
else
{
StringCbPrintfA(buffer, sizeof(buffer), "%d channels, %2.1fkHz, %d-bit", (int)pwfex->nChannels, (float)pwfex->nSamplesPerSec / 1000, (int)pwfex->wBitsPerSample);
}

// add the item description to combo box
int n = m_audioFormatCtrl.AddString(buffer);
// store media type pointer in item's data section
m_audioFormatCtrl.SetItemData(n, (DWORD_PTR)pmt);

// set default format
if ((pwfex->wFormatTag == m_wfexDefault.wFormatTag) &&
(pwfex->nChannels == m_wfexDefault.nChannels) &&
(pwfex->nSamplesPerSec == m_wfexDefault.nSamplesPerSec) &&
(pwfex->nAvgBytesPerSec == m_wfexDefault.nAvgBytesPerSec))
{
m_audioFormatCtrl.SetCurSel(n);
pISC->SetFormat(pmt);
}
}
}
}
else
{
m_audioFormatCtrl.AddString("ERROR: Unable to retrieve audio formats");
}
}
}
}
else
{
hr = E_POINTER;
}

return hr;
}

//-----------------------------------------------------------------------------
// PopulateCompressionControl
// Fill compression control with a selection of video compressors, locate the
// encoders and add them to the combo box if they exist.
HRESULT CDecklinkCaptureDlg::PopulateCompressionControl()
{
int n = m_compressionCtrl.AddString("Uncompressed");
m_compressionCtrl.SetItemData(n, (DWORD_PTR)ENC_NONE);

// search for the DV encoder, MPEG encoder and WM encoder
IBaseFilter* pFilter = NULL;
HRESULT hr = CoCreateInstance(CLSID_DVVideoEnc, 0, CLSCTX_INPROC_SERVER, IID_IBaseFilter, reinterpret_cast<void**>(&pFilter));
if (SUCCEEDED(hr))
{
n = m_compressionCtrl.SetCurSel(m_compressionCtrl.AddString("DV Video Encoder"));
m_compressionCtrl.SetItemData(n, (DWORD_PTR)ENC_DV);
SAFE_RELEASE(pFilter);
}

hr = CoCreateInstance(CLSID_WMAsfWriter, 0, CLSCTX_INPROC_SERVER, IID_IBaseFilter, reinterpret_cast<void**>(&pFilter));
if (SUCCEEDED(hr))
{
n = m_compressionCtrl.SetCurSel(m_compressionCtrl.AddString("Windows Media Encoder"));
m_compressionCtrl.SetItemData(n, (DWORD_PTR)ENC_WM);
SAFE_RELEASE(pFilter);
}

m_compressionCtrl.SetCurSel(m_compressor);

return S_OK;
}

//-----------------------------------------------------------------------------
// OnCbnSelchangeComboVideodevice
// Rebuild graph with selected capture device
void CDecklinkCaptureDlg::OnCbnSelchangeComboVideodevice()
{
SAFE_RELEASE(m_pVideoCapture); // release our outstanding reference
// remove intermediate filters, since the device selection has changed the capture device will also be removed
HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
// rebuild graph with new capture device selection
PWSTR pName = (PWSTR)m_videoDeviceCtrl.GetItemData(m_videoDeviceCtrl.GetCurSel());
if (pName)
{
hr = CDSUtils::AddFilter2(m_pGraph, CLSID_VideoInputDeviceCategory, pName, &m_pVideoCapture);
if (SUCCEEDED(hr))
{
// as the device has changed get the current operating format so that the control
// and display this as the current selection
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pVideoCapture, &MEDIATYPE_Video, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
if (SUCCEEDED(hr))
{
// get the current format of the device to set the current selection of the control
AM_MEDIA_TYPE* pamt = NULL;
hr = pISC->GetFormat(&pamt);
if (SUCCEEDED(hr))
{
if (pamt->pbFormat)
{
m_vihDefault = *(VIDEOINFOHEADER*)pamt->pbFormat;
}
DeleteMediaType(pamt);
}
}

hr = PopulateVideoControl(); // repopulate the control with formats from the new device
if (SUCCEEDED(hr))
{
hr = CreatePreviewGraph(); // rebuild the graph with the new device
}
}
}
else
{
hr = E_POINTER;
}
}
}

//-----------------------------------------------------------------------------
// OnCbnSelchangeComboAudiodevice
// Rebuild graph with selected capture device
void CDecklinkCaptureDlg::OnCbnSelchangeComboAudiodevice()
{
SAFE_RELEASE(m_pAudioCapture); // release our outstanding reference
// remove intermediate filters, since the device selection has changed the capture device will also be removed
HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
PWSTR pName = (PWSTR)m_audioDeviceCtrl.GetItemData(m_audioDeviceCtrl.GetCurSel());
if (pName)
{
hr = CDSUtils::AddFilter2(m_pGraph, CLSID_AudioInputDeviceCategory, pName, &m_pAudioCapture);
if (SUCCEEDED(hr))
{
// as the device has changed get the current operating format so that the control
// and display this as the current selection
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pAudioCapture, &MEDIATYPE_Audio, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
if (SUCCEEDED(hr))
{
// get the current format of the device to set the current selection of the control
AM_MEDIA_TYPE* pamt = NULL;
hr = pISC->GetFormat(&pamt);
if (SUCCEEDED(hr))
{
if (pamt->pbFormat)
{
m_wfexDefault = *(WAVEFORMATEX*)pamt->pbFormat;
}
DeleteMediaType(pamt);
}
}

hr = PopulateAudioControl(); // repopulate the control with formats from the new device
if (SUCCEEDED(hr))
{
hr = CreatePreviewGraph(); // rebuild the graph with the new device
}
}
}
else
{
hr = E_POINTER;
}
}
}

//-----------------------------------------------------------------------------
// OnCbnSelchangeComboVideoformats
// Rebuild preview graph if format selection changed
void CDecklinkCaptureDlg::OnCbnSelchangeComboVideoformats()
{
HRESULT hr = DestroyGraph();

if (SUCCEEDED(hr))
{
// locate the video capture pin and QI for stream control
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pVideoCapture, &MEDIATYPE_Video, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
    if (SUCCEEDED(hr))
    {
// set the new media format
AM_MEDIA_TYPE* pmt = (AM_MEDIA_TYPE*)m_videoFormatCtrl.GetItemData(m_videoFormatCtrl.GetCurSel());
m_vihDefault = *(VIDEOINFOHEADER*)pmt->pbFormat;
ASSERT(sizeof(VIDEOINFOHEADER) <= pmt->cbFormat);
hr = pISC->SetFormat(pmt);
if (SUCCEEDED(hr))
{
// save the new format
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("VideoFormat", reinterpret_cast<const BYTE*>(&m_vihDefault), sizeof(m_vihDefault)));

// update compression control, we don't have an HD compression filter so disable compression for HD formats
if (576 < m_vihDefault.bmiHeader.biHeight)
{
m_compressor = 0;
m_compressionCtrl.SetCurSel(m_compressor);
// save the new state
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("VideoCompressor", reinterpret_cast<const BYTE*>(&m_compressor), sizeof(m_compressor)));
m_bEnableCompressionCtrl = FALSE;
}
else
{
m_bEnableCompressionCtrl = TRUE;
}
EnableControls();

// rebuild the graph
hr = CreatePreviewGraph();
}
}
}
}

//-----------------------------------------------------------------------------
// OnCbnSelchangeComboAudioformats
// Rebuild preview graph if format selection changed
void CDecklinkCaptureDlg::OnCbnSelchangeComboAudioformats()
{
HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
// locate the audio capture pin and QI for stream control
CComPtr<IAMStreamConfig> pISC = NULL;
hr = CDSUtils::FindPinInterface(m_pAudioCapture, &MEDIATYPE_Audio, PINDIR_OUTPUT, IID_IAMStreamConfig, reinterpret_cast<void**>(&pISC));
    if (SUCCEEDED(hr))
    {
// set the new media format
AM_MEDIA_TYPE* pmt = (AM_MEDIA_TYPE*)m_audioFormatCtrl.GetItemData(m_audioFormatCtrl.GetCurSel());
m_wfexDefault = *(WAVEFORMATEX*)pmt->pbFormat;
ASSERT(sizeof(WAVEFORMATEX) == pmt->cbFormat);
hr = pISC->SetFormat(pmt);
if (SUCCEEDED(hr))
{
// save the new format
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("AudioFormat", reinterpret_cast<const BYTE*>(&m_wfexDefault), sizeof(m_wfexDefault)));

// rebuild the graph
hr = CreatePreviewGraph();
}
}
}
}

//-----------------------------------------------------------------------------
// OnCbnSelchangeComboCompression
// Rebuild preview graph if compression selection changed
void CDecklinkCaptureDlg::OnCbnSelchangeComboCompression()
{
HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
// save the new state
m_compressor = m_compressionCtrl.GetCurSel();
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("VideoCompressor", reinterpret_cast<const BYTE*>(&m_compressor), sizeof(m_compressor)));
// rebuild the graph
hr = CreatePreviewGraph();
}
}

//-----------------------------------------------------------------------------
// OnBnClickedCheckAudiomute
// Rebuild the capture graph to reflect the new audio setting
void CDecklinkCaptureDlg::OnBnClickedCheckAudiomute()
{
CButton* pCheck = (CButton*)GetDlgItem(IDC_CHECK_AUDIOMUTE);
if (pCheck)
{
m_bAudioMute = pCheck->GetState() & 0x0003;

HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
// save the new state
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("AudioMute", reinterpret_cast<const BYTE*>(&m_bAudioMute), sizeof(m_bAudioMute)));

// rebuild the graph which reflects the new audio setting
hr = CreatePreviewGraph();
}
}
}

//-----------------------------------------------------------------------------
// OnBnClickedButtonBrowse
// Create a file open dialog to browse for a file location
void CDecklinkCaptureDlg::OnBnClickedButtonBrowse()
{
char BASED_CODE szFilters[] = "Windows Media Files|*.avi;*.asf;*.wmv|All Files (*.*)|*.*||";

char* pExt[] = {"*.avi", "*.avi", "*.asf;*.wmv"};

CFileDialog FileDlg(TRUE, "Windows Media Files", pExt[m_compressor], 0, szFilters, this);

if (FileDlg.DoModal() == IDOK)
{
m_captureFile = FileDlg.GetPathName();
m_captureFileCtrl.SetWindowText(m_captureFile);
}
}

//-----------------------------------------------------------------------------
// OnBnClickedButtonCapture
// Create a capture graph a start capture
void CDecklinkCaptureDlg::OnBnClickedButtonCapture()
{
HRESULT hr = CreateCaptureGraph();
if (SUCCEEDED(hr))
{
if (m_pControl)
{
hr = m_pControl->Run();
if (SUCCEEDED(hr))
{
DisableControls();
}
}
}
}

//-----------------------------------------------------------------------------
// OnBnClickedButtonStop
// Stop capture and revert to preview
void CDecklinkCaptureDlg::OnBnClickedButtonStop()
{
HRESULT hr = DestroyGraph();
if (SUCCEEDED(hr))
{
hr = CreatePreviewGraph();
if (SUCCEEDED(hr))
{
EnableControls();
}
}
}

//-----------------------------------------------------------------------------
// EnableControls
//
void CDecklinkCaptureDlg::EnableControls(void)
{
CWnd* pWnd = GetDlgItem(IDC_COMBO_VIDEOFORMATS);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_COMBO_AUDIOFORMATS);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_CHECK_AUDIOMUTE);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_COMBO_COMPRESSION);
m_bEnableCompressionCtrl = (576 < m_vihDefault.bmiHeader.biHeight) ? FALSE : TRUE; // don't have an HDV codec do disable compression control for HD formats
pWnd->EnableWindow(m_bEnableCompressionCtrl);
pWnd = GetDlgItem(IDC_EDIT_CAPTUREFILE);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_BUTTON_BROWSE);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_BUTTON_CAPTURE);
pWnd->EnableWindow(TRUE);
pWnd = GetDlgItem(IDC_BUTTON_STOP);
pWnd->EnableWindow(FALSE);
}

//-----------------------------------------------------------------------------
// DisableControls
//
void CDecklinkCaptureDlg::DisableControls(void)
{
CWnd* pWnd = GetDlgItem(IDC_COMBO_VIDEOFORMATS);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_COMBO_AUDIOFORMATS);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_CHECK_AUDIOMUTE);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_COMBO_COMPRESSION);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_EDIT_CAPTUREFILE);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_BUTTON_BROWSE);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_BUTTON_CAPTURE);
pWnd->EnableWindow(FALSE);
pWnd = GetDlgItem(IDC_BUTTON_STOP);
pWnd->EnableWindow(TRUE);
}

//-----------------------------------------------------------------------------
// QueryRegistry
// retrieve previous media formats from registry
void CDecklinkCaptureDlg::QueryRegistry(void)
{
if (ERROR_SUCCESS == m_regUtils.Open("DecklinkCaptureSample"))
{
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.GetBinary("VideoFormat", reinterpret_cast<LPBYTE>(&m_vihDefault), sizeof(m_vihDefault)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.GetBinary("AudioFormat", reinterpret_cast<LPBYTE>(&m_wfexDefault), sizeof(m_wfexDefault)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.GetBinary("AudioMute", reinterpret_cast<LPBYTE>(&m_bAudioMute), sizeof(m_bAudioMute)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.GetBinary("VideoCompressor", reinterpret_cast<LPBYTE>(&m_compressor), sizeof(m_compressor)));

WCHAR captureFile[MAX_PATH];
ZeroMemory(captureFile, sizeof(captureFile));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.GetString("CaptureFile", reinterpret_cast<LPBYTE>(captureFile), sizeof(captureFile)));
m_captureFile = captureFile;
}
else
{
// create the key and registry values
if (ERROR_SUCCESS == m_regUtils.Create("DecklinkCaptureSample"))
{
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("VideoFormat", reinterpret_cast<const BYTE*>(&m_vihDefault), sizeof(m_vihDefault)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("AudioFormat", reinterpret_cast<const BYTE*>(&m_wfexDefault), sizeof(m_wfexDefault)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("AudioMute", reinterpret_cast<const BYTE*>(&m_bAudioMute), sizeof(m_bAudioMute)));
EXECUTE_ASSERT(ERROR_SUCCESS == m_regUtils.SetBinary("VideoCompressor", reinterpret_cast<const BYTE*>(&m_compressor), sizeof(m_compressor)));
}
}

// update mute audio check box control
CButton* pButton = (CButton*)GetDlgItem(IDC_CHECK_AUDIOMUTE);
pButton->SetCheck(m_bAudioMute);
}