public unsafe static RawDescriptionLoader FromFile(string filename)
{
IntPtr eximg_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(SSRLWrapper.ExtractedDescription)));
int err = SSRLWrapper.ExtractDescriptionFromFile(filename, eximg_ptr);
#if DEBUG
Console.WriteLine("ExtractDescriptionFromFile returned " + err);
#endif
if (err != 0)
{
throw new Exception(); // TODO: Design a correct exception type
}
SSRLWrapper.ExtractedDescription eximg = (SSRLWrapper.ExtractedDescription)Marshal.PtrToStructure(eximg_ptr, typeof(SSRLWrapper.ExtractedDescription));
RawDescriptionLoader ppml = new RawDescriptionLoader();
// Handling
ppml.mThumbnailData = new byte[eximg.data_size];
ppml.mIsJpeg = eximg.is_jpeg;
ppml.mAperture = eximg.aperture;
ppml.mShutter = eximg.shutter;
ppml.mISOSpeed = eximg.iso_speed;
ppml.mFocalLength = eximg.focal_len;
ppml.mArtist = Marshal.PtrToStringAnsi(eximg.artist);
ppml.mDescription = Marshal.PtrToStringAnsi(eximg.desc);
ppml.mTimeStamp = timeOrigin.AddSeconds(eximg.timestamp);
ppml.mCameraMaker = Marshal.PtrToStringAnsi(eximg.camera_maker);
ppml.mCameraModel = Marshal.PtrToStringAnsi(eximg.camera_model);
int flip = eximg.flip;
Marshal.Copy(eximg.data, ppml.mThumbnailData, 0, ppml.mThumbnailData.Length);
SSRLWrapper.FreeExtractedDescription(eximg);
// Rotating the image
// flip: 0 - no rotation; 3 - 180-deg rotation; 5 - 90-deg counterclockwise, 6 - 90-deg clockwise
if (flip == 0)
{
ppml.mFlip = FlipValues.None;
}
else if (flip == 3)
{
ppml.mFlip = FlipValues.UpsideDown;
}
else if (flip == 5)
{
ppml.mFlip = FlipValues.Counterclockwise;
}
else if (flip == 6)
{
ppml.mFlip = FlipValues.Clockwise;
}
return(ppml);
}
public static unsafe RawDescriptionLoader FromFile(string filename)
{
IntPtr eximg_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(SSRLWrapper.ExtractedDescription)));
int err = SSRLWrapper.ExtractDescriptionFromFile(filename, eximg_ptr);
#if DEBUG
Console.WriteLine("ExtractDescriptionFromFile returned " + err);
#endif
if (err != 0)
{
throw new Exception(); // TODO: Design a correct exception type
}
SSRLWrapper.ExtractedDescription eximg = (SSRLWrapper.ExtractedDescription)Marshal.PtrToStructure(eximg_ptr, typeof(SSRLWrapper.ExtractedDescription));
RawDescriptionLoader ppml = new RawDescriptionLoader();
// Handling
ppml.mThumbnailData = new byte[eximg.data_size];
ppml.mIsJpeg = eximg.is_jpeg;
ppml.mAperture = eximg.aperture;
ppml.mShutter = eximg.shutter;
ppml.mISOSpeed = eximg.iso_speed;
ppml.mFocalLength = eximg.focal_len;
ppml.mArtist = Marshal.PtrToStringAnsi(eximg.artist);
ppml.mDescription = Marshal.PtrToStringAnsi(eximg.desc);
ppml.mTimeStamp = timeOrigin.AddSeconds(eximg.timestamp);
ppml.mCameraMaker = Marshal.PtrToStringAnsi(eximg.camera_maker);
ppml.mCameraModel = Marshal.PtrToStringAnsi(eximg.camera_model);
int flip = eximg.flip;
Marshal.Copy(eximg.data, ppml.mThumbnailData, 0, ppml.mThumbnailData.Length);
SSRLWrapper.FreeExtractedDescription(eximg);
// Rotating the image
// flip: 0 - no rotation; 3 - 180-deg rotation; 5 - 90-deg counterclockwise, 6 - 90-deg clockwise
if (flip == 0) ppml.mFlip = FlipValues.None;
else if (flip == 3) ppml.mFlip = FlipValues.UpsideDown;
else if (flip == 5) ppml.mFlip = FlipValues.Counterclockwise;
else if (flip == 6) ppml.mFlip = FlipValues.Clockwise;
return ppml;
}