/// <summary>Opens an AVI file and creates a GetFrame object</summary>
/// <param name="fileName">Name of the AVI file</param>
public void Open(string fileName) {
//Intitialize AVI library
Avi.AVIFileInit();
//Open the file
int result = Avi.AVIFileOpen(
ref aviFile, fileName,
Avi.OF_SHARE_DENY_WRITE, 0);
if(result != 0){ throw new Exception("Exception in AVIFileOpen: "+result.ToString()); }
//Get the video stream
result = Avi.AVIFileGetStream(
aviFile,
out aviStream,
Avi.StreamtypeVIDEO, 0);
if(result != 0){ throw new Exception("Exception in AVIFileGetStream: "+result.ToString()); }
firstFrame = Avi.AVIStreamStart(aviStream.ToInt32());
countFrames = Avi.AVIStreamLength(aviStream.ToInt32());
streamInfo = new Avi.AVISTREAMINFO();
result = Avi.AVIStreamInfo(aviStream.ToInt32(), ref streamInfo, Marshal.SizeOf(streamInfo));
if(result != 0){ throw new Exception("Exception in AVIStreamInfo: "+result.ToString()); }
//Open frames
Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER();
bih.biBitCount = 24;
bih.biClrImportant = 0;
bih.biClrUsed = 0;
bih.biCompression = 0; //BI_RGB;
bih.biHeight = (Int32)streamInfo.rcFrame.bottom;
bih.biWidth = (Int32)streamInfo.rcFrame.right;
bih.biPlanes = 1;
bih.biSize = (UInt32)Marshal.SizeOf(bih);
bih.biXPelsPerMeter = 0;
bih.biYPelsPerMeter = 0;
//getFrameObject = Avi.AVIStreamGetFrameOpen(aviStream, ref bih); //force function to return 24bit DIBS
for (short ix = 128; ix > 0; ix--)
{
if (getFrameObject == 0)
{
bih.biBitCount = ix;
getFrameObject = Avi.AVIStreamGetFrameOpen(aviStream, ref bih); //return any bitmaps
}
else
{
break;
}
}
if (getFrameObject == 0) { throw new Exception("Exception in AVIStreamGetFrameOpen!"); }
}
private void CreateStream(uint uiQuality, short shBitCount)
{
Avi.AVISTREAMINFO strhdr = new Avi.AVISTREAMINFO();
strhdr.fccType = fccType;
strhdr.fccHandler = fccHandler;
strhdr.dwScale = 1;
strhdr.dwRate = frameRate;
strhdr.dwSuggestedBufferSize = (UInt32)(height * stride);
strhdr.dwQuality = uiQuality; //highest quality! Compression destroys the hidden message
strhdr.rcFrame.bottom = (UInt32)height;
strhdr.rcFrame.right = (UInt32)width;
strhdr.szName = new UInt16[64];
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref strhdr);
if (result != 0)
{
throw new Exception("Error in AVIFileCreateStream: " + result.ToString());
}
//define the image format
Avi.BITMAPINFOHEADER bi = new Avi.BITMAPINFOHEADER();
bi.biSize = (UInt32)Marshal.SizeOf(bi);
bi.biWidth = (Int32)width;
bi.biHeight = (Int32)height;
bi.biPlanes = 1;
bi.biBitCount = shBitCount;
bi.biSizeImage = (UInt32)(stride * height);
result = Avi.AVIStreamSetFormat(aviStream, 0, ref bi, Marshal.SizeOf(bi));
if (result != 0)
{
throw new Exception("Error in AVIStreamSetFormat: " + result.ToString());
}
}
private void CreateStream(uint uiQuality,short shBitCount)
{
Avi.AVISTREAMINFO strhdr = new Avi.AVISTREAMINFO();
strhdr.fccType = fccType;
strhdr.fccHandler = fccHandler;
strhdr.dwScale = 1;
strhdr.dwRate = frameRate;
strhdr.dwSuggestedBufferSize = (UInt32)(height * stride);
strhdr.dwQuality = uiQuality; //highest quality! Compression destroys the hidden message
strhdr.rcFrame.bottom = (UInt32)height;
strhdr.rcFrame.right = (UInt32)width;
strhdr.szName = new UInt16[64];
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref strhdr);
if (result != 0) { throw new Exception("Error in AVIFileCreateStream: " + result.ToString()); }
//define the image format
Avi.BITMAPINFOHEADER bi = new Avi.BITMAPINFOHEADER();
bi.biSize = (UInt32)Marshal.SizeOf(bi);
bi.biWidth = (Int32)width;
bi.biHeight = (Int32)height;
bi.biPlanes = 1;
bi.biBitCount = shBitCount;
bi.biSizeImage = (UInt32)(stride * height);
result = Avi.AVIStreamSetFormat(aviStream, 0, ref bi, Marshal.SizeOf(bi));
if (result != 0) { throw new Exception("Error in AVIStreamSetFormat: " + result.ToString()); }
}
/// <summary>Opens an AVI file and creates a GetFrame object</summary>
/// <param name="fileName">Name of the AVI file</param>
public void Open(string fileName)
{
//Intitialize AVI library
Avi.AVIFileInit();
//Open the file
int result = Avi.AVIFileOpen(
ref aviFile, fileName,
Avi.OF_SHARE_DENY_WRITE, 0);
if (result != 0)
{
throw new Exception("Exception in AVIFileOpen: " + result.ToString());
}
//Get the video stream
result = Avi.AVIFileGetStream(
aviFile,
out aviStream,
Avi.StreamtypeVIDEO, 0);
if (result != 0)
{
throw new Exception("Exception in AVIFileGetStream: " + result.ToString());
}
firstFrame = Avi.AVIStreamStart(aviStream.ToInt32());
countFrames = Avi.AVIStreamLength(aviStream.ToInt32());
streamInfo = new Avi.AVISTREAMINFO();
result = Avi.AVIStreamInfo(aviStream.ToInt32(), ref streamInfo, Marshal.SizeOf(streamInfo));
if (result != 0)
{
throw new Exception("Exception in AVIStreamInfo: " + result.ToString());
}
//Open frames
Avi.BITMAPINFOHEADER bih = new Avi.BITMAPINFOHEADER();
bih.biBitCount = 24;
bih.biClrImportant = 0;
bih.biClrUsed = 0;
bih.biCompression = 0; //BI_RGB;
bih.biHeight = (Int32)streamInfo.rcFrame.bottom;
bih.biWidth = (Int32)streamInfo.rcFrame.right;
bih.biPlanes = 1;
bih.biSize = (UInt32)Marshal.SizeOf(bih);
bih.biXPelsPerMeter = 0;
bih.biYPelsPerMeter = 0;
//getFrameObject = Avi.AVIStreamGetFrameOpen(aviStream, ref bih); //force function to return 24bit DIBS
for (short ix = 128; ix > 0; ix--)
{
if (getFrameObject == 0)
{
bih.biBitCount = ix;
getFrameObject = Avi.AVIStreamGetFrameOpen(aviStream, ref bih); //return any bitmaps
}
else
{
break;
}
}
if (getFrameObject == 0)
{
throw new Exception("Exception in AVIStreamGetFrameOpen!");
}
}