public static Bitmap GetBitmap(string FileName, double time)
{
try
{
Interop.qedit.MediaDetClass md = new Interop.qedit.MediaDetClass();
md.Filename = FileName;
md.CurrentStream = 0;
Interop.qedit._AMMediaType mt = md.StreamMediaType;
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure(mt.pbFormat, typeof(VideoInfoHeader));
int width = vih.BmiHeader.Width;
int height = vih.BmiHeader.Height;
IntPtr bufPtr = IntPtr.Zero;
int bufSize = 0;
// call once to get the buffer size needed
md.GetBitmapBits(0.0, ref bufSize, bufPtr, width, height);
//allocate memory
bufPtr = Marshal.AllocHGlobal(bufSize);
// call to retrieve the dib
if (time <= md.StreamLength)
{
md.GetBitmapBits(time, ref bufSize, bufPtr, width, height);
}
else
{
md.GetBitmapBits(0.0, ref bufSize, bufPtr, width, height);
}
// create a bitmap object; 40 is the size of the header on a 32-bit machine
Bitmap result = new Bitmap(width, height, width * 3,
System.Drawing.Imaging.PixelFormat.Format24bppRgb, new IntPtr((int)bufPtr + 40));
result.RotateFlip(RotateFlipType.Rotate180FlipX);
//System.Runtime.InteropServices.Marshal.FreeHGlobal(bufPtr);
return(result);
}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
}
return(null);
}
public static Bitmap GetBitmap(string FileName, double time)
{
try
{
Interop.qedit.MediaDetClass md = new Interop.qedit.MediaDetClass();
md.Filename = FileName;
md.CurrentStream = 0;
Interop.qedit._AMMediaType mt = md.StreamMediaType;
VideoInfoHeader vih = (VideoInfoHeader)Marshal.PtrToStructure( mt.pbFormat, typeof(VideoInfoHeader) );
int width = vih.BmiHeader.Width;
int height = vih.BmiHeader.Height;
IntPtr bufPtr = IntPtr.Zero;
int bufSize = 0;
// call once to get the buffer size needed
md.GetBitmapBits( 0.0, ref bufSize, bufPtr, width, height );
//allocate memory
bufPtr = Marshal.AllocHGlobal( bufSize );
// call to retrieve the dib
if(time <= md.StreamLength)
md.GetBitmapBits( time, ref bufSize, bufPtr, width, height);
else
md.GetBitmapBits( 0.0, ref bufSize, bufPtr, width, height);
// create a bitmap object; 40 is the size of the header on a 32-bit machine
Bitmap result = new Bitmap( width, height, width*3,
System.Drawing.Imaging.PixelFormat.Format24bppRgb, new IntPtr( (int)bufPtr + 40 ));
result.RotateFlip( RotateFlipType.Rotate180FlipX );
//System.Runtime.InteropServices.Marshal.FreeHGlobal(bufPtr);
return result;
}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
}
return null;
}