/// <summary>
/// Saves this <see cref='Image'/> to the specified file in the specified format and with the specified encoder parameters.
/// </summary>
public void Save(string filename, ImageCodecInfo encoder, EncoderParameters?encoderParams)
{
if (filename == null)
{
throw new ArgumentNullException(nameof(filename));
}
if (encoder == null)
{
throw new ArgumentNullException(nameof(encoder));
}
ThrowIfDirectoryDoesntExist(filename);
IntPtr encoderParamsMemory = IntPtr.Zero;
if (encoderParams != null)
{
_rawData = null;
encoderParamsMemory = encoderParams.ConvertToMemory();
}
try
{
Guid g = encoder.Clsid;
bool saved = false;
if (_rawData != null)
{
ImageCodecInfo?rawEncoder = RawFormat.FindEncoder();
if (rawEncoder != null && rawEncoder.Clsid == g)
{
using (FileStream fs = File.OpenWrite(filename))
{
fs.Write(_rawData, 0, _rawData.Length);
saved = true;
}
}
}
if (!saved)
{
Gdip.CheckStatus(Gdip.GdipSaveImageToFile(
new HandleRef(this, nativeImage),
filename,
ref g,
new HandleRef(encoderParams, encoderParamsMemory)));
}
}
finally
{
if (encoderParamsMemory != IntPtr.Zero)
{
Marshal.FreeHGlobal(encoderParamsMemory);
}
}
}
/// <summary>
/// Saves this <see cref='Image'/> to the specified stream in the specified format.
/// </summary>
public void Save(Stream stream, ImageCodecInfo encoder, EncoderParameters?encoderParams)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (encoder == null)
{
throw new ArgumentNullException(nameof(encoder));
}
IntPtr encoderParamsMemory = IntPtr.Zero;
if (encoderParams != null)
{
_rawData = null;
encoderParamsMemory = encoderParams.ConvertToMemory();
}
try
{
Guid g = encoder.Clsid;
bool saved = false;
if (_rawData != null)
{
ImageCodecInfo?rawEncoder = RawFormat.FindEncoder();
if (rawEncoder != null && rawEncoder.Clsid == g)
{
stream.Write(_rawData, 0, _rawData.Length);
saved = true;
}
}
if (!saved)
{
using DrawingCom.IStreamWrapper streamWrapper = DrawingCom.GetComWrapper(new GPStream(stream, makeSeekable: false));
unsafe
{
Gdip.CheckStatus(Gdip.GdipSaveImageToStream(
new HandleRef(this, nativeImage),
streamWrapper.Ptr,
&g,
new HandleRef(encoderParams, encoderParamsMemory)));
}
}
}
finally
{
if (encoderParamsMemory != IntPtr.Zero)
{
Marshal.FreeHGlobal(encoderParamsMemory);
}
}
}
public void Save(Stream stream, ImageFormat format)
{
ImageCodecInfo?encoder = FindEncoderForFormat(format);
if (encoder == null)
{
throw new ArgumentException(SR.Format(SR.NoCodecAvailableForFormat, format.Guid));
}
Save(stream, encoder, null);
}
public static void CreateSmallCopy(FileInfo sourceImageFile, FileInfo targetImageFile)
{
using (Image sourceImage = Image.FromFile(sourceImageFile.FullName))
{
// Determine how to resize -- we want the longest side to be IMAGE_SIZE
Single scaleFactor = 1;
if (sourceImage.Width >= sourceImage.Height)
{
// Landscape
if (sourceImage.Width > IMAGE_SIZE)
{
// E.g., if longer edge is 2048, the scaleFactor is 0.5
scaleFactor = IMAGE_SIZE / ( Single )sourceImage.Width;
}
}
else
{
// Portrait
if (sourceImage.Height > IMAGE_SIZE)
{
scaleFactor = IMAGE_SIZE / ( Single )sourceImage.Height;
}
}
Int32 newWidth = ( Int32 )(sourceImage.Width * scaleFactor + 1);
Int32 newHeight = ( Int32 )(sourceImage.Height * scaleFactor + 1);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
// https://docs.microsoft.com/en-us/dotnet/framework/winforms/advanced/how-to-set-jpeg-compression-level?redirectedfrom=MSDN
ImageCodecInfo? jgpEncoder = GetEncoder(ImageFormat.Jpeg);
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, QUALITY);
myEncoderParameters.Param[0] = myEncoderParameter;
using (Bitmap bitmap = new Bitmap(newWidth, newHeight))
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.DrawImage(sourceImage, new Rectangle(0, 0, newWidth, newHeight));
bitmap.Save(targetImageFile.FullName, jgpEncoder, myEncoderParameters);
}
File.SetLastWriteTime(targetImageFile.FullName, sourceImageFile.LastWriteTime);
}
}
public void Save(string filename, ImageFormat format)
{
ImageCodecInfo?encoder = FindEncoderForFormat(format);
if (encoder == null)
{
// second chance
encoder = FindEncoderForFormat(RawFormat);
if (encoder == null)
{
string msg = string.Format("No codec available for saving format '{0}'.", format.Guid);
throw new ArgumentException(msg, nameof(format));
}
}
Save(filename, encoder, null);
}
/// <summary>
/// Saves this <see cref='Image'/> to the specified file in the specified format.
/// </summary>
public void Save(string filename, ImageFormat format)
{
if (format == null)
{
throw new ArgumentNullException(nameof(format));
}
ImageCodecInfo?codec = format.FindEncoder();
if (codec == null)
{
codec = ImageFormat.Png.FindEncoder() !;
}
Save(filename, codec, null);
}
private static ImageCodecInfo?GetEncoder(ImageFormat format)
{
ImageCodecInfo?ret = null;
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
foreach (ImageCodecInfo codec in codecs)
{
if (codec.FormatID == format.Guid)
{
ret = codec;
}
}
return(ret);
}
internal ImageCodecInfo?FindEncoderForFormat(ImageFormat format)
{
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo? encoder = null;
if (format.Guid.Equals(ImageFormat.MemoryBmp.Guid))
{
format = ImageFormat.Png;
}
/* Look for the right encoder for our format*/
for (int i = 0; i < encoders.Length; i++)
{
if (encoders[i].FormatID.Equals(format.Guid))
{
encoder = encoders[i];
break;
}
}
return(encoder);
}
public static bool ConvertPdfToTiff(string sourceFile, string outputFile, float dpi, RenderType type, bool rotateLandscapePages, bool shrinkToLetter, int maxSizeInPdfPixels, string pdfPassword)
{
bool output = false;
if (string.IsNullOrEmpty(sourceFile) || string.IsNullOrEmpty(outputFile))
{
throw new ArgumentNullException();
}
using (MuPDF pdfDoc = new MuPDF(sourceFile, pdfPassword))
{
using (FileStream outputStream = new FileStream(outputFile, FileMode.Create, FileAccess.ReadWrite, FileShare.None))
{
ImageCodecInfo?info = null;
foreach (ImageCodecInfo ice in ImageCodecInfo.GetImageEncoders())
{
if (ice.MimeType == "image/tiff")
{
info = ice;
}
}
Bitmap saveTif = null;
pdfDoc.AntiAlias = false;
for (int i = 1; i <= pdfDoc.PageCount; i++)
{
pdfDoc.Page = i;
Bitmap FirstImage = pdfDoc.GetBitmap(0, 0, dpi, dpi, 0, type, rotateLandscapePages, shrinkToLetter, maxSizeInPdfPixels);
if (FirstImage == null)
{
throw new Exception("Unable to convert pdf to tiff!");
}
using (EncoderParameters ep = new EncoderParameters(2))
{
ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.MultiFrame);
ep.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.CompressionLZW);
if (type == RenderType.Monochrome)
{
ep.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.CompressionCCITT4);
}
if (i == 1)
{
saveTif = FirstImage;
saveTif.Save(outputStream, info, ep);
}
else
{
ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.FrameDimensionPage);
saveTif.SaveAdd(FirstImage, ep);
FirstImage.Dispose();
}
if (i == pdfDoc.PageCount)
{
ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, (long)EncoderValue.Flush);
saveTif.SaveAdd(ep);
saveTif.Dispose();
}
}
}
}
if (File.Exists(outputFile))
{
output = true;
}
}
return(output);
}
