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 unsafe static RawLoader FromFile(string filename, bool divide_by_2, ProgressReporter callback)
{
IntPtr eximg_ptr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(SSRLWrapper.ExtractedRawImage)));
int err = SSRLWrapper.ExtractRawImageFromFile(filename, divide_by_2, eximg_ptr, delegate(float progress) {
return(callback(progress));
});
#if DEBUG
Console.WriteLine("ExtractRawImageFromFile returned " + err);
#endif
if (err != 0)
{
return(null);
}
SSRLWrapper.ExtractedRawImage eximg = (SSRLWrapper.ExtractedRawImage)Marshal.PtrToStructure(eximg_ptr, typeof(SSRLWrapper.ExtractedRawImage));
RawLoader ppml = new RawLoader(eximg.width, eximg.height);
if (eximg.bitsPerChannel == 16)
{
// Handling
short[] rgb_data = new short[eximg.width * eximg.height * 3];
Marshal.Copy(eximg.data, rgb_data, 0, rgb_data.Length);
for (int i = 0; i < eximg.width; i++)
{
for (int j = 0; j < eximg.height; j++)
{
ppml.r_channel[i, j] = (ushort)rgb_data[3 * (i + eximg.width * j)];
ppml.g_channel[i, j] = (ushort)rgb_data[3 * (i + eximg.width * j) + 1];
ppml.b_channel[i, j] = (ushort)rgb_data[3 * (i + eximg.width * j) + 2];
}
}
}
else if (eximg.bitsPerChannel == 8)
{
throw new Exception("Can't handle 8 bit");
}
else
{
throw new Exception("incorrect or unsupported bitsPerChannel value: " + eximg.bitsPerChannel);
}
SSRLWrapper.FreeExtractedRawImage(eximg);
return(ppml);
}