// Drawing code
BOOL SingleFace::ShowEggAvatar(HDC hdc, int width, int height, int originX, int originY)
{
static int errCount = 0;
BOOL ret = FALSE;
if (m_pImageBuffer && SUCCEEDED(m_pImageBuffer->Allocate(width, height, FTIMAGEFORMAT_UINT8_B8G8R8A8)))
{
memset(m_pImageBuffer->GetBuffer(), 0, m_pImageBuffer->GetStride() * height); // clear to black
m_eggavatar.SetScaleAndTranslationToWindow(height, width);
m_eggavatar.DrawImage(m_pImageBuffer);
BITMAPINFO bmi = {sizeof(BITMAPINFO), width, height, 1, static_cast<WORD>(m_pImageBuffer->GetBytesPerPixel() * CHAR_BIT), BI_RGB, m_pImageBuffer->GetStride() * height, 5000, 5000, 0, 0};
errCount += (0 == StretchDIBits(hdc, 0, 0, width, height, 0, 0, width, height, m_pImageBuffer->GetBuffer(), &bmi, DIB_RGB_COLORS, SRCCOPY));
ret = TRUE;
}
return ret;
}
// Drawing the video window
BOOL MultiFace::ShowVideo(HDC hdc, int width, int height, int originX, int originY)
{
BOOL ret = TRUE;
// Now, copy a fraction of the camera image into the screen.
IFTImage* colorImage = m_FTHelper.GetColorImage();
if (colorImage)
{
int iWidth = colorImage->GetWidth();
int iHeight = colorImage->GetHeight();
if (iWidth > 0 && iHeight > 0)
{
int iTop = 0;
int iBottom = iHeight;
int iLeft = 0;
int iRight = iWidth;
// Keep a separate buffer.
if (m_pVideoBuffer && SUCCEEDED(m_pVideoBuffer->Allocate(iWidth, iHeight, FTIMAGEFORMAT_UINT8_B8G8R8A8)))
{
// Copy do the video buffer while converting bytes
colorImage->CopyTo(m_pVideoBuffer, NULL, 0, 0);
// Compute the best approximate copy ratio.
float w1 = (float)iHeight * (float)width;
float w2 = (float)iWidth * (float)height;
if (w2 > w1 && height > 0)
{
// video image too wide
float wx = w1/height;
iLeft = (int)max(0, m_FTHelper.GetXCenterFace() - wx / 2);
iRight = iLeft + (int)wx;
if (iRight > iWidth)
{
iRight = iWidth;
iLeft = iRight - (int)wx;
}
}
else if (w1 > w2 && width > 0)
{
// video image too narrow
float hy = w2/width;
iTop = (int)max(0, m_FTHelper.GetYCenterFace() - hy / 2);
iBottom = iTop + (int)hy;
if (iBottom > iHeight)
{
iBottom = iHeight;
iTop = iBottom - (int)hy;
}
}
int const bmpPixSize = m_pVideoBuffer->GetBytesPerPixel();
SetStretchBltMode(hdc, HALFTONE);
BITMAPINFO bmi = {sizeof(BITMAPINFO), static_cast<LONG>(iWidth), static_cast<LONG>(iHeight), static_cast<WORD>(1), static_cast<WORD>(bmpPixSize * CHAR_BIT), BI_RGB, m_pVideoBuffer->GetStride() * iHeight, 5000, 5000, 0, 0};
if (0 == StretchDIBits(hdc, originX, originY, width, height,
iLeft, iBottom, iRight-iLeft, iTop-iBottom, m_pVideoBuffer->GetBuffer(), &bmi, DIB_RGB_COLORS, SRCCOPY))
{
ret = FALSE;
}
}
}
}
return ret;
}