1405 lines
31 KiB
C++
1405 lines
31 KiB
C++
/****************************************************************************
|
|
*
|
|
* FILE: Videoui.cpp
|
|
*
|
|
* CREATED: Mark MacLin (MMacLin) 10-17-96
|
|
*
|
|
* CONTENTS: CVideo object
|
|
*
|
|
****************************************************************************/
|
|
// File: VideoUI.cpp
|
|
|
|
#include "precomp.h"
|
|
|
|
#include "avdefs.h"
|
|
#include "video.h"
|
|
#include "h323.h"
|
|
#include <mperror.h>
|
|
#include <initguid.h>
|
|
#include <nacguids.h>
|
|
|
|
|
|
#define INITIAL_FRAMERATE 700
|
|
|
|
#define DibHdrSize(lpbi) ((lpbi)->biSize + (int)(lpbi)->biClrUsed * sizeof(RGBQUAD))
|
|
#define DibDataSize(lpbi) ((lpbi)->biSizeImage)
|
|
#define DibSize(lpbi) (DibHdrSize(lpbi) + DibDataSize(lpbi))
|
|
|
|
|
|
|
|
|
|
//
|
|
// SortOrder() and SetVideoSize() are helper functions for reordering the video
|
|
// based on the notion of a "small", "medium", or "large" user preference that is
|
|
// exposed by a property setting in INmChannelVideo::Setproperty. This
|
|
// notion is flawed because there may be more or less than three sizes.
|
|
// We should expose the possible sizes and let the application choose
|
|
// a format. Unil then, this hack has to be here. The code for these two functions
|
|
// was originally in vidstrm.cpp (in NAC.DLL)
|
|
//
|
|
|
|
//
|
|
// types & globals used by SortOrder() and SetVideoSize()
|
|
//
|
|
|
|
// Used to translate between frame sizes and the FRAME_* bit flags
|
|
#define NON_STANDARD 0x80000000
|
|
#define SIZE_TO_FLAG(s) (s == Small ? FRAME_SQCIF : s == Medium ? FRAME_QCIF: s == Large ? FRAME_CIF : NON_STANDARD)
|
|
|
|
// FORMATORDER: structure used in ::SetVideoSize to
|
|
// use predefined frame size orders for different set size requests
|
|
typedef struct _FORMATORDER
|
|
{
|
|
WORD indexCIF;
|
|
WORD indexQCIF;
|
|
WORD indexSQCIF;
|
|
} FORMATORDER;
|
|
|
|
// Table of sizes in order
|
|
const FORMATORDER g_fmtOrderTable[3] =
|
|
{
|
|
{ 0, 1, 2 }, // requestor asked for CIF
|
|
{ 2, 0, 1 }, // requestor asked for QCIF
|
|
{ 2, 1, 0 } // requestor asked for SQCIF
|
|
};
|
|
|
|
// SortOrder
|
|
// Helper function to search for the specific format type and set its sort
|
|
// order to the desired number
|
|
// THIS WAS MOVED HERE FROM vidstrm.cpp
|
|
//
|
|
BOOL
|
|
SortOrder(
|
|
IAppVidCap *pavc,
|
|
BASIC_VIDCAP_INFO* pvidcaps,
|
|
DWORD dwcFormats,
|
|
DWORD dwFlags,
|
|
WORD wDesiredSortOrder,
|
|
int nNumFormats
|
|
)
|
|
{
|
|
int i, j;
|
|
int nNumSizes = 0;
|
|
int *aFrameSizes = (int *)NULL;
|
|
int *aMinFrameSizes = (int *)NULL;
|
|
int iMaxPos;
|
|
WORD wTempPos, wMaxSortIndex;
|
|
|
|
// Scale sort value
|
|
wDesiredSortOrder *= (WORD)nNumFormats;
|
|
|
|
// Local buffer of sizes that match dwFlags
|
|
if (!(aFrameSizes = (int *)LocalAlloc(LPTR,nNumFormats * sizeof (int))))
|
|
goto out;
|
|
|
|
// Look through all the formats until we find the ones we want
|
|
// Save the position of these entries
|
|
for (i=0; i<(int)dwcFormats; i++)
|
|
if (SIZE_TO_FLAG(pvidcaps[i].enumVideoSize) == dwFlags)
|
|
aFrameSizes[nNumSizes++] = i;
|
|
|
|
// Now order those entries from highest to lowest sort index
|
|
for (i=0; i<nNumSizes; i++)
|
|
{
|
|
for (iMaxPos = -1L, wMaxSortIndex=0UL, j=i; j<nNumSizes; j++)
|
|
{
|
|
if (pvidcaps[aFrameSizes[j]].wSortIndex > wMaxSortIndex)
|
|
{
|
|
wMaxSortIndex = pvidcaps[aFrameSizes[j]].wSortIndex;
|
|
iMaxPos = j;
|
|
}
|
|
}
|
|
if (iMaxPos != -1L)
|
|
{
|
|
wTempPos = (WORD)aFrameSizes[i];
|
|
aFrameSizes[i] = aFrameSizes[iMaxPos];
|
|
aFrameSizes[iMaxPos] = wTempPos;
|
|
}
|
|
}
|
|
|
|
// Change the sort index of the sorted entries
|
|
for (; nNumSizes--;)
|
|
pvidcaps[aFrameSizes[nNumSizes]].wSortIndex = wDesiredSortOrder++;
|
|
|
|
// Release memory
|
|
LocalFree(aFrameSizes);
|
|
|
|
return TRUE;
|
|
|
|
out:
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
// ::SetVideoSize
|
|
//
|
|
// THIS WAS MOVED HERE FROM vidstrm.cpp
|
|
|
|
HRESULT
|
|
SetVideoSize(
|
|
IH323CallControl *pH323CallControl,
|
|
DWORD dwSizeFlags
|
|
)
|
|
{
|
|
IAppVidCap* pavc;
|
|
DWORD dwcFormats;
|
|
DWORD dwcFormatsReturned;
|
|
BASIC_VIDCAP_INFO* pvidcaps = NULL;
|
|
BASIC_VIDCAP_INFO* pmin;
|
|
DWORD *pvfx = NULL;
|
|
DWORD i, j;
|
|
int k;
|
|
HRESULT hr = S_OK;
|
|
int nNumFormatTags;
|
|
|
|
// Validate parameters
|
|
if (dwSizeFlags != FRAME_CIF && dwSizeFlags != FRAME_QCIF && dwSizeFlags != FRAME_SQCIF)
|
|
return S_FALSE;;
|
|
|
|
// Prepare for error
|
|
hr = S_FALSE;
|
|
|
|
// Get a vid cap interface
|
|
if (pH323CallControl->QueryInterface(IID_IAppVidCap, (void **)&pavc) != S_OK)
|
|
goto out;
|
|
|
|
// Get the number of BASIC_VIDCAP_INFO structures available
|
|
if (pavc->GetNumFormats((UINT*)&dwcFormats) != S_OK)
|
|
goto out;
|
|
|
|
// Allocate some memory to hold the list in
|
|
if (!(pvidcaps = (BASIC_VIDCAP_INFO*)LocalAlloc(LPTR,dwcFormats * sizeof (BASIC_VIDCAP_INFO))))
|
|
goto out;
|
|
|
|
// Get the list
|
|
if (pavc->EnumFormats(pvidcaps, dwcFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
(UINT*)&dwcFormatsReturned) != S_OK)
|
|
goto out;
|
|
|
|
// Use the preformatted list of choice here
|
|
switch (dwSizeFlags)
|
|
{
|
|
default:
|
|
case FRAME_CIF: i = 0; break;
|
|
case FRAME_QCIF: i = 1; break;
|
|
case FRAME_SQCIF: i = 2; break;
|
|
}
|
|
|
|
// Get the number of different format tags
|
|
if (!(pvfx = (DWORD*)LocalAlloc(LPTR,dwcFormatsReturned * sizeof (DWORD))))
|
|
goto out;
|
|
ZeroMemory(pvfx,dwcFormatsReturned * sizeof (DWORD));
|
|
|
|
if (dwcFormatsReturned)
|
|
{
|
|
for (nNumFormatTags = 1, pvfx[0] = pvidcaps[0].dwFormatTag, j=1; j<dwcFormatsReturned; j++)
|
|
{
|
|
for (k=0; k<nNumFormatTags; k++)
|
|
if (pvidcaps[j].dwFormatTag == pvfx[k])
|
|
break;
|
|
|
|
if (k==nNumFormatTags)
|
|
pvfx[nNumFormatTags++] = pvidcaps[j].dwFormatTag;
|
|
|
|
}
|
|
}
|
|
|
|
// Set the sort order for the desired item
|
|
if (!SortOrder(pavc, pvidcaps, dwcFormatsReturned, FRAME_CIF, g_fmtOrderTable[i].indexCIF, nNumFormatTags) ||
|
|
!SortOrder(pavc, pvidcaps, dwcFormatsReturned, FRAME_QCIF, g_fmtOrderTable[i].indexQCIF, nNumFormatTags) ||
|
|
!SortOrder(pavc, pvidcaps, dwcFormatsReturned, FRAME_SQCIF, g_fmtOrderTable[i].indexSQCIF, nNumFormatTags))
|
|
{
|
|
goto out;
|
|
}
|
|
|
|
// Always pack indices
|
|
for (i=0; i<dwcFormatsReturned; i++)
|
|
{
|
|
// First find an entry with a sort index larger or equal to i
|
|
for (j=0; j<dwcFormatsReturned; j++)
|
|
{
|
|
// if ((pvidcaps[j].wSortIndex >= i) || (!i && (pvidcaps[j].wSortIndex == 0)))
|
|
if (pvidcaps[j].wSortIndex >= i)
|
|
{
|
|
pmin = &pvidcaps[j];
|
|
break;
|
|
}
|
|
}
|
|
// First the smallest entry larger or equal to i
|
|
for (; j<dwcFormatsReturned; j++)
|
|
{
|
|
if ((pvidcaps[j].wSortIndex < pmin->wSortIndex) && (pvidcaps[j].wSortIndex >= i))
|
|
pmin = &pvidcaps[j];
|
|
}
|
|
// Update sort index
|
|
pmin->wSortIndex = (WORD)i;
|
|
}
|
|
|
|
// Ok, now submit this list
|
|
if (pavc->ApplyAppFormatPrefs(pvidcaps, dwcFormats) != S_OK)
|
|
{
|
|
goto out;
|
|
}
|
|
|
|
|
|
hr = S_OK;
|
|
|
|
out:
|
|
// Free the memory, we're done
|
|
if (pvidcaps)
|
|
LocalFree(pvidcaps);
|
|
if (pvfx)
|
|
LocalFree(pvfx);
|
|
|
|
// let the interface go
|
|
if (pavc)
|
|
pavc->Release();
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
CVideoPump::CVideoPump(BOOL fLocal) :
|
|
m_fPaused(FALSE),
|
|
m_dwUser(0),
|
|
m_pfnCallback(NULL),
|
|
m_dwLastFrameRate(0),
|
|
m_fLocal(fLocal),
|
|
m_fChannelOpen(FALSE),
|
|
m_pImage(NULL),
|
|
m_pVideoRender(NULL),
|
|
m_BestFormat(INVALID_MEDIA_FORMAT),
|
|
m_NewFormat(INVALID_MEDIA_FORMAT),
|
|
m_fOpenPending(FALSE),
|
|
m_fReopenPending(FALSE),
|
|
m_fClosePending(FALSE)
|
|
{
|
|
}
|
|
|
|
CVideoPump::~CVideoPump()
|
|
{
|
|
if (NULL != m_pVideoRender)
|
|
{
|
|
m_pVideoRender->Done();
|
|
m_pVideoRender->Release();
|
|
}
|
|
ReleaseImage();
|
|
if (NULL != m_pIVideoDevice)
|
|
{
|
|
m_pIVideoDevice->Release();
|
|
}
|
|
if (NULL != m_pMediaStream)
|
|
{
|
|
m_pMediaStream->Release();
|
|
}
|
|
|
|
if (NULL != m_pPreviewChannel)
|
|
{
|
|
m_pPreviewChannel->Release();
|
|
}
|
|
if (NULL != m_pCommChannel)
|
|
{
|
|
m_pCommChannel->Release();
|
|
}
|
|
}
|
|
|
|
BOOL CVideoPump::ChanInitialize(ICommChannel* pCommChannel)
|
|
{
|
|
HRESULT hr;
|
|
BOOL bRet = TRUE;
|
|
if(m_pPreviewChannel && m_pPreviewChannel == pCommChannel)
|
|
{
|
|
ASSERT(m_pVideoRender && m_pCommChannel == pCommChannel);
|
|
//m_pCommChannel = pCommChannel;
|
|
}
|
|
else
|
|
{
|
|
m_pCommChannel = pCommChannel;
|
|
m_pCommChannel->AddRef();
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
BOOL CVideoPump::Initialize(IH323CallControl *pH323CallControl, IMediaChannel *pMC,
|
|
IVideoDevice *pVideoDevice, DWORD_PTR dwUser, LPFNFRAMEREADY pfnCallback)
|
|
{
|
|
HRESULT hr;
|
|
|
|
m_dwUser = dwUser;
|
|
m_pfnCallback = pfnCallback;
|
|
|
|
m_pMediaStream = pMC;
|
|
m_pMediaStream->AddRef();
|
|
|
|
if(m_fLocal)
|
|
{
|
|
GUID mediaID = MEDIA_TYPE_H323VIDEO;
|
|
|
|
hr = pH323CallControl->CreateLocalCommChannel(&m_pPreviewChannel, &mediaID, m_pMediaStream);
|
|
if(FAILED(hr))
|
|
{
|
|
ASSERT(0);
|
|
return FALSE;
|
|
}
|
|
|
|
m_pCommChannel = m_pPreviewChannel;
|
|
m_pCommChannel->AddRef();
|
|
|
|
}
|
|
|
|
hr = m_pMediaStream->QueryInterface(IID_IVideoRender, (void **)&m_pVideoRender);
|
|
if(FAILED(hr))
|
|
{
|
|
ASSERT(0);
|
|
return FALSE;
|
|
}
|
|
|
|
hr = m_pVideoRender->Init(m_dwUser, m_pfnCallback);
|
|
if(FAILED(hr))
|
|
{
|
|
ASSERT(0);
|
|
m_pVideoRender->Release();
|
|
m_pVideoRender = NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
ASSERT(pVideoDevice);
|
|
m_pIVideoDevice = pVideoDevice;
|
|
m_pIVideoDevice->AddRef();
|
|
|
|
|
|
m_fChannelOpen = FALSE;
|
|
m_dwLastFrameRate = INITIAL_FRAMERATE;
|
|
|
|
m_fPaused = TRUE;
|
|
EnableXfer(FALSE); // need to store state locally, set it in OnChannelOpen
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
HRESULT CVideoPump::GetFrame(FRAMECONTEXT *pFrameContext)
|
|
{
|
|
HRESULT hr;
|
|
|
|
// if we are paused m_pImage will be a pointer to the saved DIB
|
|
if (NULL != m_pImage)
|
|
{
|
|
*pFrameContext = m_FrameContext;
|
|
hr = S_OK;
|
|
}
|
|
else
|
|
{
|
|
if(m_pVideoRender)
|
|
{
|
|
hr = m_pVideoRender->GetFrame(pFrameContext);
|
|
}
|
|
else
|
|
{
|
|
hr = S_FALSE;
|
|
}
|
|
|
|
if (S_OK == hr)
|
|
{
|
|
// data pump may be sending a bogus lpClipRect, so ...
|
|
|
|
// if lpClipRect is NULL, calculate rect from bmiHeader
|
|
if (NULL == pFrameContext->lpClipRect) {
|
|
// calculate clip rect from BITMAPINFOHEADER
|
|
m_ClipRect.left = m_ClipRect.top = 0;
|
|
m_ClipRect.right = pFrameContext->lpbmi->bmiHeader.biWidth;
|
|
m_ClipRect.bottom = pFrameContext->lpbmi->bmiHeader.biHeight;
|
|
pFrameContext->lpClipRect = &m_ClipRect;
|
|
}
|
|
}
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CVideoPump::ReleaseFrame(FRAMECONTEXT *pFrameContext)
|
|
{
|
|
// release the frame if it is not the saved DIB
|
|
if ((m_pImage != (LPBYTE)pFrameContext->lpbmi) && m_pVideoRender)
|
|
{
|
|
// if lpClipRect was NULL (see GetFrame), restore it
|
|
if (&m_ClipRect == pFrameContext->lpClipRect)
|
|
{
|
|
pFrameContext->lpClipRect = NULL;
|
|
}
|
|
return m_pVideoRender->ReleaseFrame(pFrameContext);
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
VOID CVideoPump::SnapImage ()
|
|
{
|
|
FRAMECONTEXT FrameContext;
|
|
|
|
if ((NULL == m_pImage) && m_pVideoRender)
|
|
{
|
|
if (S_OK == m_pVideoRender->GetFrame(&FrameContext))
|
|
{
|
|
BITMAPINFOHEADER *pbmih;
|
|
|
|
pbmih = &FrameContext.lpbmi->bmiHeader;
|
|
m_pImage = (LPBYTE)LocalAlloc(LPTR, DibSize(pbmih));
|
|
if (NULL != m_pImage)
|
|
{
|
|
int nHdrSize = DibHdrSize(pbmih);
|
|
|
|
CopyMemory(m_pImage, pbmih, nHdrSize);
|
|
CopyMemory(m_pImage + nHdrSize, FrameContext.lpData, DibDataSize(pbmih));
|
|
|
|
m_FrameContext.lpbmi = (LPBITMAPINFO)m_pImage;
|
|
m_FrameContext.lpData = (LPBYTE)m_pImage + nHdrSize;
|
|
if (NULL != FrameContext.lpClipRect)
|
|
{
|
|
m_ClipRect = *FrameContext.lpClipRect;
|
|
}
|
|
else
|
|
{
|
|
m_ClipRect.left = m_ClipRect.top = 0;
|
|
m_ClipRect.right = m_FrameContext.lpbmi->bmiHeader.biWidth;
|
|
m_ClipRect.bottom = m_FrameContext.lpbmi->bmiHeader.biHeight;
|
|
}
|
|
m_FrameContext.lpClipRect = &m_ClipRect;
|
|
}
|
|
m_pVideoRender->ReleaseFrame(&FrameContext);
|
|
}
|
|
}
|
|
}
|
|
|
|
VOID CVideoPump::ReleaseImage ()
|
|
{
|
|
if (NULL != m_pImage)
|
|
{
|
|
LocalFree(m_pImage);
|
|
m_pImage = NULL;
|
|
}
|
|
}
|
|
|
|
VOID CVideoPump::Pause(BOOL fPause)
|
|
{
|
|
m_fPaused = fPause;
|
|
|
|
// ideally we would like the data pump to hold onto the last frame
|
|
// so that we don't have to do this
|
|
if (m_fPaused)
|
|
{
|
|
if (m_fChannelOpen)
|
|
{
|
|
SnapImage();
|
|
}
|
|
EnableXfer(FALSE);
|
|
}
|
|
else
|
|
{
|
|
EnableXfer(TRUE);
|
|
ReleaseImage();
|
|
}
|
|
}
|
|
|
|
BOOL CVideoPump::IsXferEnabled()
|
|
{
|
|
if (m_fLocal)
|
|
{
|
|
return IsSendEnabled();
|
|
}
|
|
return IsReceiveEnabled();
|
|
}
|
|
|
|
VOID CVideoPump::Open(MEDIA_FORMAT_ID format_id)
|
|
{
|
|
if(!m_pCommChannel)
|
|
{
|
|
return;
|
|
}
|
|
|
|
m_pCommChannel->PauseNetworkStream(FALSE);
|
|
m_pCommChannel->EnableOpen(TRUE);
|
|
|
|
if (m_fLocal)
|
|
{
|
|
HRESULT hr;
|
|
// if the channel is not open and a call is in progress, now is the time
|
|
if(m_pConnection && m_pCommChannel)
|
|
{
|
|
// a call is in progress
|
|
if(!IsChannelOpen()
|
|
&& !m_fOpenPending)
|
|
{
|
|
// so, the channel is not open
|
|
|
|
if(format_id != INVALID_MEDIA_FORMAT)
|
|
{
|
|
// try to open a channel using specified format
|
|
m_fOpenPending = TRUE; // do this first (callbacks!)
|
|
hr = m_pCommChannel->Open(format_id, m_pConnection);
|
|
if(FAILED(hr))
|
|
m_fOpenPending = FALSE;
|
|
}
|
|
|
|
}
|
|
else if (m_fClosePending)
|
|
{
|
|
m_NewFormat = format_id;
|
|
if(format_id != INVALID_MEDIA_FORMAT)
|
|
{
|
|
m_fClosePending = FALSE;
|
|
m_fReopenPending = TRUE;
|
|
hr = m_pCommChannel->Close();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
VOID CVideoPump::Close()
|
|
{
|
|
HRESULT hr;
|
|
hr = m_pCommChannel->Close();
|
|
// what to do about an error?
|
|
}
|
|
|
|
VOID CVideoPump::EnableXfer(BOOL fEnable)
|
|
{
|
|
if (m_fLocal)
|
|
{
|
|
if (fEnable)
|
|
{
|
|
HRESULT hr;
|
|
SetFrameRate(m_dwLastFrameRate);
|
|
|
|
EnablePreview(TRUE);
|
|
EnableSend(TRUE);
|
|
|
|
// if the channel is not open and a call is in progress, now is the time
|
|
if(m_pConnection && m_pCommChannel)
|
|
{
|
|
// a call is in progress
|
|
if(!IsChannelOpen()
|
|
&& !m_fOpenPending)
|
|
{
|
|
// so, the channel is not open
|
|
m_BestFormat = m_NewFormat = CVideoProp::GetBestFormat();
|
|
if(m_BestFormat != INVALID_MEDIA_FORMAT)
|
|
{
|
|
// try to open a channel using format m_BestFormat
|
|
m_fOpenPending = TRUE; // do this first (callbacks!)
|
|
hr = m_pCommChannel->Open(m_BestFormat, m_pConnection);
|
|
if(FAILED(hr))
|
|
m_fOpenPending = FALSE;
|
|
}
|
|
// else no common video formats exist and a channel cannot
|
|
// be opened.
|
|
}
|
|
else if (m_fClosePending)
|
|
{
|
|
m_BestFormat = m_NewFormat = CVideoProp::GetBestFormat();
|
|
if(m_BestFormat != INVALID_MEDIA_FORMAT)
|
|
{
|
|
m_fClosePending = FALSE;
|
|
m_fReopenPending = TRUE;
|
|
hr = m_pCommChannel->Close();
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
if (IsSendEnabled())
|
|
{
|
|
m_dwLastFrameRate = GetFrameRate();
|
|
}
|
|
|
|
EnablePreview(FALSE);
|
|
EnableSend(FALSE);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
EnableReceive(fEnable);
|
|
}
|
|
|
|
}
|
|
|
|
VOID CVideoPump::SetFrameSize(DWORD dwValue)
|
|
{
|
|
CVideoProp::SetFrameSize(dwValue);
|
|
|
|
ForceCaptureChange();
|
|
}
|
|
|
|
VOID CVideoPump::OnConnected(IH323Endpoint * lpConnection, ICommChannel *pIChannel)
|
|
{
|
|
m_pConnection = lpConnection;
|
|
m_fOpenPending = m_fReopenPending = m_fClosePending = FALSE;
|
|
}
|
|
|
|
VOID CVideoPump::OnChannelOpened(ICommChannel *pIChannel)
|
|
{
|
|
HRESULT hr;
|
|
m_fChannelOpen = TRUE;
|
|
m_fOpenPending = FALSE;
|
|
ChanInitialize(pIChannel);
|
|
ASSERT(m_pMediaStream);
|
|
|
|
if (m_fLocal)
|
|
{
|
|
m_fSend = TRUE;
|
|
EnableXfer(TRUE);
|
|
|
|
// if video size changed while waiting for the channel to be opened,
|
|
// then need to close again, then reopen again using the new format
|
|
if(m_BestFormat != m_NewFormat)
|
|
{
|
|
ForceCaptureChange();
|
|
}
|
|
else // make sure to track the video size
|
|
{
|
|
GetFrameSize();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
EnableXfer(m_fReceive);
|
|
SetReceiveQuality(m_dwImageQuality);
|
|
}
|
|
ReleaseImage();
|
|
}
|
|
|
|
VOID CVideoPump::OnChannelError()
|
|
{
|
|
m_fOpenPending = FALSE;
|
|
}
|
|
|
|
NM_VIDEO_STATE CVideoPump::GetState()
|
|
{
|
|
NM_VIDEO_STATE state = NM_VIDEO_IDLE;
|
|
|
|
if (IsChannelOpen())
|
|
{
|
|
if (IsXferEnabled())
|
|
{
|
|
if (IsRemotePaused())
|
|
{
|
|
state = NM_VIDEO_REMOTE_PAUSED;
|
|
}
|
|
else
|
|
{
|
|
state = NM_VIDEO_TRANSFERRING;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (IsRemotePaused())
|
|
{
|
|
state = NM_VIDEO_BOTH_PAUSED;
|
|
}
|
|
else
|
|
{
|
|
state = NM_VIDEO_LOCAL_PAUSED;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (IsXferEnabled())
|
|
{
|
|
state = NM_VIDEO_PREVIEWING;
|
|
}
|
|
}
|
|
return state;
|
|
}
|
|
|
|
VOID CVideoPump::OnChannelClosed()
|
|
{
|
|
m_fChannelOpen = FALSE;
|
|
HRESULT hr;
|
|
if(m_pPreviewChannel)
|
|
{
|
|
if(m_fReopenPending)
|
|
{
|
|
m_fReopenPending = FALSE;
|
|
if(m_BestFormat != INVALID_MEDIA_FORMAT )
|
|
{
|
|
m_fOpenPending = TRUE;
|
|
hr = m_pCommChannel->Open(m_BestFormat, m_pConnection);
|
|
if(FAILED(hr))
|
|
m_fOpenPending = FALSE;
|
|
}
|
|
}
|
|
else if(CVideoProp::IsPreviewEnabled())
|
|
{
|
|
EnablePreview(TRUE);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(m_pCommChannel)
|
|
{
|
|
m_pCommChannel->Release();
|
|
m_pCommChannel = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
VOID CVideoPump::OnDisconnected()
|
|
{
|
|
m_pConnection = NULL;
|
|
|
|
if(m_dwFrameSize != m_dwPreferredFrameSize)
|
|
{
|
|
SetFrameSize(m_dwPreferredFrameSize);
|
|
}
|
|
|
|
if (!IsLocal())
|
|
{
|
|
EnableXfer(FALSE);
|
|
}
|
|
|
|
ReleaseImage();
|
|
}
|
|
|
|
|
|
CVideoProp::CVideoProp() :
|
|
m_pCommChannel(NULL),
|
|
m_pPreviewChannel(NULL),
|
|
m_pConnection(NULL),
|
|
m_pMediaStream(NULL),
|
|
m_pIVideoDevice(NULL)
|
|
{
|
|
}
|
|
|
|
VOID CVideoProp::EnableSend(BOOL fEnable)
|
|
{
|
|
m_fSend = fEnable;
|
|
BOOL bPause = (fEnable)? FALSE :TRUE;
|
|
ASSERT(m_pCommChannel);
|
|
m_pCommChannel->PauseNetworkStream(bPause);
|
|
m_pCommChannel->EnableOpen(fEnable);
|
|
|
|
}
|
|
|
|
BOOL CVideoProp::IsSendEnabled()
|
|
{
|
|
return m_fSend;
|
|
}
|
|
|
|
VOID CVideoProp::EnableReceive(BOOL fEnable)
|
|
{
|
|
m_fReceive = fEnable;
|
|
BOOL fPause = !fEnable;
|
|
|
|
if(m_pCommChannel)
|
|
{
|
|
m_pCommChannel->PauseNetworkStream(fPause);
|
|
}
|
|
}
|
|
|
|
BOOL CVideoProp::IsReceiveEnabled()
|
|
{
|
|
return m_fReceive;
|
|
}
|
|
|
|
VOID CVideoProp::EnablePreview(BOOL fEnable)
|
|
{
|
|
m_fPreview = fEnable;
|
|
MEDIA_FORMAT_ID FormatID;
|
|
if(m_pCommChannel)
|
|
{
|
|
if(m_fPreview)
|
|
{
|
|
// get format to preview, then do it
|
|
FormatID = GetBestFormat();
|
|
if(FormatID != INVALID_MEDIA_FORMAT)
|
|
{
|
|
m_pCommChannel->Preview(FormatID, m_pMediaStream);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_pCommChannel->Preview(INVALID_MEDIA_FORMAT, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
BOOL CVideoProp::IsPreviewEnabled()
|
|
{
|
|
return m_fPreview;
|
|
}
|
|
|
|
BOOL CVideoProp::IsRemotePaused()
|
|
{
|
|
|
|
if(m_pCommChannel)
|
|
return m_pCommChannel->IsRemotePaused();
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
VOID CVideoProp::SetFrameRate(DWORD dwValue)
|
|
{
|
|
m_dwFrameRate = dwValue;
|
|
|
|
ASSERT(m_pMediaStream);
|
|
m_pMediaStream->SetProperty(
|
|
PROP_VIDEO_FRAME_RATE,
|
|
&dwValue,
|
|
sizeof(dwValue));
|
|
}
|
|
|
|
DWORD CVideoProp::GetFrameRate()
|
|
{
|
|
DWORD dwValue;
|
|
UINT uSize = sizeof(dwValue);
|
|
|
|
ASSERT(m_pMediaStream);
|
|
m_pMediaStream->GetProperty(
|
|
PROP_VIDEO_FRAME_RATE,
|
|
&dwValue,
|
|
&uSize);
|
|
|
|
TRACE_OUT(("GetFrameRate returns %d", dwValue));
|
|
return dwValue;
|
|
}
|
|
|
|
|
|
MEDIA_FORMAT_ID CVideoProp::GetBestFormat()
|
|
{
|
|
IAppVidCap* pavc;
|
|
UINT cFormats;
|
|
BASIC_VIDCAP_INFO* pvidcaps = NULL;
|
|
|
|
MEDIA_FORMAT_ID FormatID = INVALID_MEDIA_FORMAT;
|
|
// Get a vid cap interface. If in a call, use the best common format
|
|
//
|
|
if(!m_pConnection)
|
|
{
|
|
// not in a call - use the best local format period
|
|
if(!m_pCommChannel)
|
|
goto out;
|
|
if (m_pCommChannel->QueryInterface(IID_IAppVidCap, (void **)&pavc) != S_OK)
|
|
goto out;
|
|
// Get the number of BASIC_VIDCAP_INFO structures available
|
|
if (pavc->GetNumFormats(&cFormats) != S_OK)
|
|
goto out;
|
|
|
|
if(cFormats < 1)
|
|
goto out;
|
|
|
|
// Allocate some memory to hold the list in
|
|
if (!(pvidcaps = (BASIC_VIDCAP_INFO*)LocalAlloc(LPTR, cFormats * sizeof (BASIC_VIDCAP_INFO))))
|
|
goto out;
|
|
|
|
// Get the list of local capabilities
|
|
// (by the way, this is never called for receive video)
|
|
if (pavc->EnumFormats(pvidcaps, cFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
&cFormats) != S_OK)
|
|
goto out;
|
|
|
|
// the output of EnumCommonFormats is in preferred order
|
|
FormatID = pvidcaps[0].Id;
|
|
}
|
|
else
|
|
{
|
|
if (m_pConnection->QueryInterface(IID_IAppVidCap, (void **)&pavc) != S_OK)
|
|
goto out;
|
|
|
|
// Get the number of BASIC_VIDCAP_INFO structures available
|
|
if (pavc->GetNumFormats(&cFormats) != S_OK)
|
|
goto out;
|
|
|
|
if(cFormats < 1)
|
|
goto out;
|
|
|
|
// Allocate some memory to hold the list in
|
|
if (!(pvidcaps = (BASIC_VIDCAP_INFO*)LocalAlloc(LPTR, cFormats * sizeof (BASIC_VIDCAP_INFO))))
|
|
goto out;
|
|
|
|
// Get the list of viable transmit capabilities
|
|
// (by the way, this is never called for receive video)
|
|
if (pavc->EnumCommonFormats(pvidcaps, cFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
&cFormats, TRUE) != S_OK)
|
|
goto out;
|
|
|
|
// the output of EnumCommonFormats is in preferred order
|
|
FormatID = pvidcaps[0].Id;
|
|
|
|
}
|
|
|
|
out:
|
|
// Free the memory, we're done
|
|
if (pvidcaps)
|
|
LocalFree(pvidcaps);
|
|
|
|
// let the interface go
|
|
if (pavc)
|
|
pavc->Release();
|
|
|
|
return FormatID;
|
|
}
|
|
|
|
|
|
|
|
VOID CVideoProp::SetFrameSize(DWORD dwValue)
|
|
{
|
|
IH323CallControl * pH323CallControl = g_pH323UI->GetH323CallControl();
|
|
m_dwFrameSize = m_dwPreferredFrameSize = dwValue;
|
|
::SetVideoSize(pH323CallControl, m_dwFrameSize);
|
|
}
|
|
|
|
DWORD CVideoProp::GetFrameSize()
|
|
{
|
|
MEDIA_FORMAT_ID idCurrent;
|
|
if(m_pCommChannel)
|
|
{
|
|
idCurrent = m_pCommChannel->GetConfiguredFormatID();
|
|
m_dwFrameSize = GetFrameSizes(idCurrent);
|
|
}
|
|
return m_dwFrameSize;
|
|
}
|
|
|
|
DWORD CVideoProp::GetFrameSizes(MEDIA_FORMAT_ID idSpecificFormat)
|
|
{
|
|
DWORD dwValue = 0; //FRAME_SQCIF | FRAME_QCIF | FRAME_CIF;
|
|
HRESULT hr;
|
|
BOOL bOpen = FALSE;
|
|
ASSERT(m_pCommChannel);
|
|
// Used to translate between frame sizes and the FRAME_* bit flags
|
|
#define NON_STANDARD 0x80000000
|
|
#define SIZE_TO_FLAG(s) (s == Small ? FRAME_SQCIF : s == Medium ? FRAME_QCIF: s == Large ? FRAME_CIF : NON_STANDARD)
|
|
|
|
IAppVidCap* pavc = NULL;
|
|
DWORD dwcFormats;
|
|
DWORD dwcFormatsReturned;
|
|
BASIC_VIDCAP_INFO* pvidcaps = NULL;
|
|
DWORD i;
|
|
DWORD dwSizes = 0;
|
|
DWORD dwThisSize;
|
|
|
|
// Get a vid cap interface
|
|
hr = m_pCommChannel->QueryInterface(IID_IAppVidCap, (void **)&pavc);
|
|
if (hr != S_OK)
|
|
goto out;
|
|
|
|
// Get the number of BASIC_VIDCAP_INFO structures available
|
|
hr = pavc->GetNumFormats((UINT*)&dwcFormats);
|
|
if (hr != S_OK)
|
|
goto out;
|
|
|
|
// Allocate some memory to hold the list in
|
|
if (!(pvidcaps = (BASIC_VIDCAP_INFO*)LocalAlloc(LPTR, dwcFormats * sizeof (BASIC_VIDCAP_INFO))))
|
|
{
|
|
// report that no sizes are available?
|
|
// dwValue = 0FRAME_SQCIF | FRAME_QCIF | FRAME_CIF;
|
|
goto out;
|
|
}
|
|
// if an active session, use common caps from that session
|
|
hr = m_pCommChannel->IsChannelOpen(&bOpen);
|
|
// if hr is an error, so what. it will take the channel not open path
|
|
if(bOpen)
|
|
{
|
|
// Get the list of common formats
|
|
hr = pavc->EnumCommonFormats(pvidcaps, dwcFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
(UINT*)&dwcFormatsReturned, m_fSend);
|
|
if(hr != S_OK)
|
|
{
|
|
// if the error is simply because there are no remote video caps, get the local formats
|
|
if(hr == CAPS_E_NOCAPS)
|
|
{
|
|
hr = pavc->EnumFormats(pvidcaps, dwcFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
(UINT*)&dwcFormatsReturned);
|
|
if (hr != S_OK)
|
|
goto out;
|
|
}
|
|
else
|
|
goto out;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
hr = pavc->EnumFormats(pvidcaps, dwcFormats * sizeof (BASIC_VIDCAP_INFO),
|
|
(UINT*)&dwcFormatsReturned);
|
|
if (hr != S_OK)
|
|
goto out;
|
|
}
|
|
if(bOpen && (idSpecificFormat != INVALID_MEDIA_FORMAT ))
|
|
{
|
|
// Now walk through the list to see what sizes are supported
|
|
for (i = 0 ; i < dwcFormatsReturned ; i++)
|
|
{
|
|
if(pvidcaps[i].Id == idSpecificFormat)
|
|
{
|
|
dwThisSize = SIZE_TO_FLAG(pvidcaps[i].enumVideoSize);
|
|
// As long as the macro found the size, return it to the property requester
|
|
if (dwThisSize != NON_STANDARD)
|
|
{
|
|
dwSizes |= dwThisSize;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Now walk through the list to see what sizes are supported
|
|
for (i = 0 ; i < dwcFormatsReturned ; i++)
|
|
{
|
|
if(m_fSend)
|
|
{
|
|
if(!pvidcaps[i].bSendEnabled)
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
if(!pvidcaps[i].bRecvEnabled)
|
|
continue;
|
|
}
|
|
// Convert to bit field sizes or NON_STANDARD
|
|
dwThisSize = SIZE_TO_FLAG(pvidcaps[i].enumVideoSize);
|
|
|
|
// As long as the macro found the size, return it to the property requester
|
|
if (dwThisSize != NON_STANDARD)
|
|
dwSizes |= dwThisSize;
|
|
}
|
|
}
|
|
// Now that we've accumulated all the sizes, return them
|
|
dwValue = dwSizes;
|
|
|
|
out:
|
|
// Free the memory, we're done
|
|
if (pvidcaps)
|
|
LocalFree(pvidcaps);
|
|
// let the interface go
|
|
if (pavc)
|
|
pavc->Release();
|
|
return dwValue;
|
|
}
|
|
|
|
BOOL CVideoProp::HasSourceDialog()
|
|
{
|
|
HRESULT hr;
|
|
IVideoChannel *pVideoChannel=NULL;
|
|
DWORD dwFlags;
|
|
|
|
ASSERT(m_pMediaStream);
|
|
hr = m_pMediaStream->QueryInterface(IID_IVideoChannel, (void**)&pVideoChannel);
|
|
ASSERT(pVideoChannel);
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
pVideoChannel->GetDeviceDialog(&dwFlags);
|
|
pVideoChannel->Release();
|
|
|
|
return dwFlags & CAPTURE_DIALOG_SOURCE;
|
|
}
|
|
|
|
BOOL CVideoProp::HasFormatDialog()
|
|
{
|
|
HRESULT hr;
|
|
IVideoChannel *pVideoChannel=NULL;
|
|
DWORD dwFlags;
|
|
|
|
ASSERT(m_pMediaStream);
|
|
hr = m_pMediaStream->QueryInterface(IID_IVideoChannel, (void**)&pVideoChannel);
|
|
ASSERT(pVideoChannel);
|
|
|
|
if (FAILED(hr))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
pVideoChannel->GetDeviceDialog(&dwFlags);
|
|
pVideoChannel->Release();
|
|
|
|
return dwFlags & CAPTURE_DIALOG_FORMAT;
|
|
}
|
|
|
|
VOID CVideoProp::ShowSourceDialog()
|
|
{
|
|
DWORD dwFlags = CAPTURE_DIALOG_SOURCE;
|
|
HRESULT hr;
|
|
IVideoChannel *pVideoChannel=NULL;
|
|
|
|
ASSERT(m_pMediaStream);
|
|
|
|
hr = m_pMediaStream->QueryInterface(IID_IVideoChannel, (void**)&pVideoChannel);
|
|
ASSERT(pVideoChannel);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
|
|
pVideoChannel->ShowDeviceDialog(dwFlags);
|
|
pVideoChannel->Release();
|
|
}
|
|
}
|
|
|
|
VOID CVideoProp::ShowFormatDialog()
|
|
{
|
|
DWORD dwFlags = CAPTURE_DIALOG_FORMAT;
|
|
HRESULT hr;
|
|
IVideoChannel *pVideoChannel=NULL;
|
|
|
|
ASSERT(m_pMediaStream);
|
|
|
|
hr = m_pMediaStream->QueryInterface(IID_IVideoChannel, (void**)&pVideoChannel);
|
|
ASSERT(pVideoChannel);
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
|
|
pVideoChannel->ShowDeviceDialog(dwFlags);
|
|
pVideoChannel->Release();
|
|
}
|
|
}
|
|
|
|
VOID CVideoProp::SetReceiveQuality(DWORD dwValue)
|
|
{
|
|
m_dwImageQuality = dwValue;
|
|
if(m_pCommChannel)
|
|
{
|
|
dwValue = MAX_VIDEO_QUALITY - dwValue;
|
|
m_pCommChannel->SetProperty(
|
|
PROP_TS_TRADEOFF,
|
|
&dwValue,
|
|
sizeof(dwValue));
|
|
}
|
|
}
|
|
|
|
DWORD CVideoProp::GetReceiveQuality()
|
|
{
|
|
return m_dwImageQuality;
|
|
}
|
|
|
|
BOOL CVideoProp::IsCaptureAvailable()
|
|
{
|
|
ULONG uNumCapDevs;
|
|
|
|
ASSERT(m_pIVideoDevice);
|
|
|
|
uNumCapDevs = m_pIVideoDevice->GetNumCapDev();
|
|
|
|
return (uNumCapDevs > 0);
|
|
}
|
|
|
|
BOOL CVideoProp::IsCaptureSuspended()
|
|
{
|
|
BOOL fStandby;
|
|
UINT uSize = sizeof(fStandby);
|
|
|
|
ASSERT(m_pCommChannel);
|
|
m_pCommChannel->GetProperty(
|
|
PROP_VIDEO_PREVIEW_STANDBY,
|
|
&fStandby,
|
|
&uSize);
|
|
|
|
return fStandby;
|
|
}
|
|
|
|
|
|
VOID CVideoProp::SuspendCapture(BOOL fSuspend)
|
|
{
|
|
ASSERT(m_pCommChannel);
|
|
if (fSuspend)
|
|
{
|
|
// Enable standby
|
|
m_pCommChannel->SetProperty(
|
|
PROP_VIDEO_PREVIEW_STANDBY,
|
|
&fSuspend,
|
|
sizeof(fSuspend));
|
|
|
|
m_pCommChannel->Preview(INVALID_MEDIA_FORMAT, NULL);
|
|
}
|
|
else
|
|
{
|
|
if(m_fPreview)
|
|
{
|
|
// get format to preview, then do it
|
|
MEDIA_FORMAT_ID FormatID = GetBestFormat();
|
|
if(FormatID != INVALID_MEDIA_FORMAT)
|
|
{
|
|
m_pCommChannel->Preview(FormatID, m_pMediaStream);
|
|
}
|
|
// Disable standby
|
|
m_pCommChannel->SetProperty(
|
|
PROP_VIDEO_PREVIEW_STANDBY,
|
|
&fSuspend,
|
|
sizeof(fSuspend));
|
|
}
|
|
else
|
|
{
|
|
m_pCommChannel->Preview(INVALID_MEDIA_FORMAT, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Gets the number of enabled capture devices
|
|
// Returns -1L on error
|
|
int CVideoProp::GetNumCapDev()
|
|
{
|
|
ASSERT(m_pIVideoDevice);
|
|
return (m_pIVideoDevice->GetNumCapDev());
|
|
}
|
|
|
|
// Gets the max size of the captuire device name
|
|
// Returns -1L on error
|
|
int CVideoProp::GetMaxCapDevNameLen()
|
|
{
|
|
ASSERT(m_pIVideoDevice);
|
|
return (m_pIVideoDevice->GetMaxCapDevNameLen());
|
|
}
|
|
|
|
// Enum list of enabled capture devices
|
|
// Fills up 1st buffer with device IDs, 2nd buffer with device names
|
|
// Third parameter is the number of devices to enum
|
|
// Returns FALSE on error
|
|
BOOL CVideoProp::EnumCapDev(DWORD *pdwCapDevIDs, TCHAR *pszCapDevNames, DWORD dwNumCapDev)
|
|
{
|
|
ASSERT(m_pIVideoDevice);
|
|
return (m_pIVideoDevice->EnumCapDev(pdwCapDevIDs, pszCapDevNames, dwNumCapDev));
|
|
}
|
|
|
|
// Returns the ID of the currently selected device
|
|
// Returns -1L on error
|
|
int CVideoProp::GetCurrCapDevID()
|
|
{
|
|
ASSERT(m_pIVideoDevice);
|
|
return (m_pIVideoDevice->GetCurrCapDevID());
|
|
}
|
|
|
|
// Selects the current capture device
|
|
// Returns -1L on error
|
|
BOOL CVideoProp::SetCurrCapDevID(int nCapDevID)
|
|
{
|
|
ASSERT(m_pIVideoDevice);
|
|
return (m_pIVideoDevice->SetCurrCapDevID(nCapDevID));
|
|
}
|
|
|
|
// Selects the current capture device
|
|
// Returns -1L on error
|
|
BOOL CVideoPump::SetCurrCapDevID(int nCapDevID)
|
|
{
|
|
if (nCapDevID == -1)
|
|
{
|
|
WARNING_OUT(("CVideoPump::SetCurrCapDevID called with %d", nCapDevID));
|
|
|
|
// This will release the capture device for Exchange RTC video stuff
|
|
if (m_pMediaStream)
|
|
{
|
|
m_pMediaStream->Configure(NULL, 0, NULL, 0, NULL);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
HRESULT hr;
|
|
IDualPubCap *pCapability = NULL;
|
|
LPAPPVIDCAPPIF pVidCap = NULL;
|
|
IH323CallControl * pH323CallControl = g_pH323UI->GetH323CallControl();
|
|
|
|
// change the capture device
|
|
CVideoProp::SetCurrCapDevID(nCapDevID);
|
|
|
|
// reinitialize local capability data
|
|
hr = pH323CallControl->QueryInterface(IID_IDualPubCap, (void **)&pCapability);
|
|
if(FAILED(hr))
|
|
goto out;
|
|
|
|
ASSERT(pCapability);
|
|
hr = pCapability->QueryInterface(IID_IAppVidCap, (void **)&pVidCap);
|
|
if(FAILED(hr))
|
|
goto out;
|
|
ASSERT(pVidCap);
|
|
hr = pVidCap->SetDeviceID(nCapDevID);
|
|
if(FAILED(hr))
|
|
goto out;
|
|
hr = pCapability->ReInitialize();
|
|
|
|
out:
|
|
if (pVidCap)
|
|
pVidCap->Release();
|
|
if (pCapability)
|
|
pCapability->Release();
|
|
|
|
return ForceCaptureChange();
|
|
}
|
|
}
|
|
|
|
|
|
BOOL CVideoPump::ForceCaptureChange()
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
if (m_fLocal)
|
|
{
|
|
if (m_pConnection)
|
|
{
|
|
if (IsXferEnabled())
|
|
{
|
|
if (!m_fReopenPending && !m_fOpenPending)
|
|
{
|
|
// if the send channel, and a call exists and the channel is open, and not
|
|
// already closing or opening .....
|
|
if(IsChannelOpen())
|
|
{
|
|
ASSERT(m_pCommChannel);
|
|
// need to close and re-open
|
|
// don't lose a good channel if there is no longer
|
|
// a compatible format, otherwise, close and reopen
|
|
m_BestFormat = m_NewFormat = CVideoProp::GetBestFormat();
|
|
if(m_BestFormat != INVALID_MEDIA_FORMAT)
|
|
{
|
|
m_fReopenPending = TRUE;
|
|
hr = m_pCommChannel->Close();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(m_BestFormat != INVALID_MEDIA_FORMAT )
|
|
{
|
|
m_fOpenPending = TRUE;
|
|
hr = m_pCommChannel->Open(m_BestFormat, m_pConnection);
|
|
if(FAILED(hr))
|
|
m_fOpenPending = FALSE;
|
|
}
|
|
}
|
|
}
|
|
else // already waiting for channel to be opened using some format
|
|
{
|
|
m_NewFormat = CVideoProp::GetBestFormat();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(IsChannelOpen())
|
|
{
|
|
m_fClosePending = TRUE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!IsChannelOpen() && IsPreviewEnabled())
|
|
{
|
|
// togle preview to commit size change
|
|
EnablePreview(FALSE);
|
|
EnablePreview(TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (FAILED(hr))
|
|
return FALSE;
|
|
else
|
|
return TRUE;
|
|
}
|
|
|