/** @brief Delete a user's video frame, acquired through
* TeamTalk.AcquireUserVideoCaptureFrame(), so its allocated resources can be
* released.
*
* @param lpVideoFrame Pointer to #BearWare.VideoFrame which should be deallocated.
* @return Returns TRUE If a video frame was successfully deallocated.
* @see TeamTalk.AcquireUserVideoCaptureFrame() */
public bool ReleaseUserVideoCaptureFrame(VideoFrame lpVideoFrame)
{
IntPtr ptr;
if (vidcapframes.TryGetValue(lpVideoFrame.frameBuffer, out ptr))
{
vidcapframes.Remove(lpVideoFrame.frameBuffer);
return TTDLL.TT_ReleaseUserVideoCaptureFrame(m_ttInst, ptr);
}
return false;
}
/**
* @brief Paint user's video frame using a Windows' DC (device
* context).
*
* An application can either paint using TeamTalk.AcquireUserVideoCaptureFrame()
* which provides a raw RGB32 array of the image or the
* application can ask the client instance to paint the image
* using this function.
*
* Typically this paint operation will be called in the WM_PAINT
* message. Here is how the client instance paints internally:
*
@verbatim
StretchDIBits(hDC, nPosX, nPosY, nWidth, nHeight, XSrc, YSrc,
nSrcWidth, nSrcHeight, frame_buf, &bmi,
DIB_RGB_COLORS, SRCCOPY);
@endverbatim
*
* @param nUserID The user's ID. 0 for local user.
* @param hDC The handle to the Windows device context.
* @param XDest Coordinate of left corner where to start painting.
* @param YDest Coordinate or top corner where to start painting.
* @param nDestWidth The width of the image.
* @param nDestHeight The height of the image.
* @param XSrc The left coordinate in the source bitmap of where
* to start reading.
* @param YSrc The top left coordinate in the source bitmap of where
* to start reading.
* @param nSrcWidth The number of width pixels to read from source bitmap.
* @param nSrcHeight The number of height pixels to read from source bitmap.
* @param lpVideoFrame Video frame retrieved by TeamTalk.AcquireUserVideoCaptureFrame() */
public bool PaintVideoFrameEx(int nUserID,
System.IntPtr hDC,
int XDest,
int YDest,
int nDestWidth,
int nDestHeight,
int XSrc,
int YSrc,
int nSrcWidth,
int nSrcHeight,
ref VideoFrame lpVideoFrame)
{
return TTDLL.TT_PaintVideoFrameEx(nUserID, hDC, XDest, YDest, nDestWidth, nDestHeight,
XSrc, YSrc, nSrcWidth, nSrcHeight,
ref lpVideoFrame);
}
/** @brief Delete a user's video frame, acquired through
* TeamTalk.AcquireUserMediaVideoFrame(), so its allocated resources can
* be released.
*
* @param lpVideoFrame Pointer to #BearWare.VideoFrame which should be deallocated.
* @return Returns TRUE if a video frame was successfully deallocated.
* @see AcquireUserMediaVideoFrame() */
public bool ReleaseUserMediaVideoFrame(VideoFrame lpVideoFrame)
{
IntPtr ptr;
if (mediaframes.TryGetValue(lpVideoFrame.frameBuffer, out ptr))
{
mediaframes.Remove(lpVideoFrame.frameBuffer);
return TTDLL.TT_ReleaseUserMediaVideoFrame(m_ttInst, ptr);
}
return false;
}
void ttclient_OnUserVideoFrame(int nUserID, int nStreamID)
{
if (userid != nUserID)
return;
if (bmp != null)
bmp.Dispose();
bmp = null;
//Release shared memory
ttclient.ReleaseUserVideoCaptureFrame(vidframe);
vidframe = ttclient.AcquireUserVideoCaptureFrame(nUserID, out bmp);
Invalidate();
}
