public void GetFrameOpen()
{
var bih = new AviInterop.BitmapInfoHeader
{
biBitCount = CountBitsPerPixel,
biPlanes = 1
};
bih.biSize = Marshal.SizeOf(bih);
getFrameObject = AviInterop.AVIStreamGetFrameOpen(StreamPointer, ref bih);
if (getFrameObject == 0)
throw new CodecNotFoundException();
isFrameOpen = true;
}
public VideoStream(int filePtr, IntPtr streamPtr)
: base(filePtr, streamPtr)
{
var bih = new AviInterop.BitmapInfoHeader();
int size = Marshal.SizeOf(bih);
AviInterop.AVIStreamReadFormat(StreamPointer, 0, ref bih, ref size);
AviInterop.StreamInfo streamInfo = GetStreamInfo();
FrameRate = streamInfo.dwRate / (float)streamInfo.dwScale;
Width = streamInfo.rcFrame.right;
Height = streamInfo.rcFrame.bottom;
FrameSize = bih.biSizeImage;
CountBitsPerPixel = CalculateBitsPerPixel(bih.biBitCount);
FirstFrame = AviInterop.AVIStreamStart(StreamPointer);
CountFrames = AviInterop.AVIStreamLength(StreamPointer);
}
public void GetFrameOpen()
{
var bih = new AviInterop.BitmapInfoHeader
{
biBitCount = CountBitsPerPixel,
biPlanes = 1
};
bih.biSize = Marshal.SizeOf(bih);
getFrameObject = AviInterop.AVIStreamGetFrameOpen(StreamPointer, ref bih);
if (getFrameObject == 0)
{
throw new CodecNotFoundException();
}
isFrameOpen = true;
}
public VideoStream(int filePtr, IntPtr streamPtr)
: base(filePtr, streamPtr)
{
var bih = new AviInterop.BitmapInfoHeader();
int size = Marshal.SizeOf(bih);
AviInterop.AVIStreamReadFormat(StreamPointer, 0, ref bih, ref size);
AviInterop.StreamInfo streamInfo = GetStreamInfo();
FrameRate = streamInfo.dwRate / (float)streamInfo.dwScale;
Width = streamInfo.rcFrame.right;
Height = streamInfo.rcFrame.bottom;
FrameSize = bih.biSizeImage;
CountBitsPerPixel = CalculateBitsPerPixel(bih.biBitCount);
FirstFrame = AviInterop.AVIStreamStart(StreamPointer);
CountFrames = AviInterop.AVIStreamLength(StreamPointer);
}
public byte[] GetStreamData(int position, out AviInterop.BitmapInfoHeader header)
{
if (!isFrameOpen)
throw new Exception("GetFrameOpen needs to be called before GetStreamData!");
int dib = AviInterop.AVIStreamGetFrame(getFrameObject, FirstFrame + position);
header = new AviInterop.BitmapInfoHeader();
header = (AviInterop.BitmapInfoHeader)Marshal.PtrToStructure((IntPtr)dib, header.GetType());
if (header.biSizeImage < 1)
throw new Exception("Exception in VideoStreamGetFrame");
int bihSize = Marshal.SizeOf(header);
var bitmapData =
new byte[header.biSizeImage + (header.biBitCount < 16 ? PaletteSize : 0)];
Marshal.Copy((IntPtr)(dib + bihSize), bitmapData, 0, bitmapData.Length);
return bitmapData;
}
public byte[] GetStreamData(int position, out AviInterop.BitmapInfoHeader header)
{
if (!isFrameOpen)
{
throw new Exception("GetFrameOpen needs to be called before GetStreamData!");
}
int dib = AviInterop.AVIStreamGetFrame(getFrameObject, FirstFrame + position);
header = new AviInterop.BitmapInfoHeader();
header = (AviInterop.BitmapInfoHeader)Marshal.PtrToStructure((IntPtr)dib, header.GetType());
if (header.biSizeImage < 1)
{
throw new Exception("Exception in VideoStreamGetFrame");
}
int bihSize = Marshal.SizeOf(header);
var bitmapData =
new byte[header.biSizeImage + (header.biBitCount < 16 ? PaletteSize : 0)];
Marshal.Copy((IntPtr)(dib + bihSize), bitmapData, 0, bitmapData.Length);
return(bitmapData);
}
