/// <summary>
/// Saves image to stream with specified quality
/// </summary>
public static void SaveToStream(Image imageToSave, Stream stream, OutputFormat extension, int quality)
{
ImageFormat imfo = null;
bool disposeImage = false;
switch (extension)
{
case OutputFormat.bmp:
imfo = ImageFormat.Bmp;
break;
case OutputFormat.gif:
imfo = ImageFormat.Gif;
break;
case OutputFormat.jpg:
imfo = ImageFormat.Jpeg;
break;
case OutputFormat.png:
imfo = ImageFormat.Png;
break;
case OutputFormat.tiff:
imfo = ImageFormat.Tiff;
break;
default:
imfo = ImageFormat.Png;
break;
}
// If Quantizing is enable, overwrite the image to save with a 256 - color version
if (conf.OutputFileReduceColors)
{
try {
LOG.Debug("Reducing colors on bitmap.");
Quantizer quantizer = new OctreeQuantizer(255, 8);
imageToSave = quantizer.Quantize(imageToSave);
// Make sure the "new" image is disposed
disposeImage = true;
} catch (Exception e) {
LOG.Warn("Error occurred while Quantizing the image, ignoring and using original. Error: ", e);
}
}
try {
// Create meta-data
PropertyItem softwareUsedPropertyItem = CreatePropertyItem(PROPERTY_TAG_SOFTWARE_USED, "Greenshot");
if (softwareUsedPropertyItem != null)
{
try {
imageToSave.SetPropertyItem(softwareUsedPropertyItem);
} catch (ArgumentException) {
LOG.WarnFormat("Image of type {0} do not support property {1}", imfo, softwareUsedPropertyItem.Id);
}
}
LOG.DebugFormat("Saving image to stream with PixelFormat {0}", imageToSave.PixelFormat);
if (imfo == ImageFormat.Jpeg)
{
EncoderParameters parameters = new EncoderParameters(1);
parameters.Param[0] = new System.Drawing.Imaging.EncoderParameter(Encoder.Quality, quality);
ImageCodecInfo[] ies = ImageCodecInfo.GetImageEncoders();
imageToSave.Save(stream, ies[1], parameters);
}
else
{
imageToSave.Save(stream, imfo);
}
} finally {
// cleanup if needed
if (disposeImage && imageToSave != null)
{
imageToSave.Dispose();
}
}
}
/// <summary>
/// Saves image to stream with specified quality
/// </summary>
public static void SaveToStream(Image imageToSave, Stream stream, OutputFormat extension, int quality)
{
ImageFormat imfo = null;
bool disposeImage = false;
switch (extension) {
case OutputFormat.bmp:
imfo = ImageFormat.Bmp;
break;
case OutputFormat.gif:
imfo = ImageFormat.Gif;
break;
case OutputFormat.jpg:
imfo = ImageFormat.Jpeg;
break;
case OutputFormat.png:
imfo = ImageFormat.Png;
break;
case OutputFormat.tiff:
imfo = ImageFormat.Tiff;
break;
default:
imfo = ImageFormat.Png;
break;
}
// If Quantizing is enable, overwrite the image to save with a 256 - color version
if (conf.OutputFileReduceColors) {
try {
LOG.Debug("Reducing colors on bitmap.");
Quantizer quantizer = new OctreeQuantizer(255,8);
imageToSave = quantizer.Quantize(imageToSave);
// Make sure the "new" image is disposed
disposeImage = true;
} catch(Exception e) {
LOG.Warn("Error occurred while Quantizing the image, ignoring and using original. Error: ", e);
}
}
try {
// Create meta-data
PropertyItem softwareUsedPropertyItem = CreatePropertyItem(PROPERTY_TAG_SOFTWARE_USED, "Greenshot");
if (softwareUsedPropertyItem != null) {
try {
imageToSave.SetPropertyItem(softwareUsedPropertyItem);
} catch (ArgumentException) {
LOG.WarnFormat("Image of type {0} do not support property {1}", imfo, softwareUsedPropertyItem.Id);
}
}
LOG.DebugFormat("Saving image to stream with PixelFormat {0}", imageToSave.PixelFormat);
if (imfo == ImageFormat.Jpeg) {
EncoderParameters parameters = new EncoderParameters(1);
parameters.Param[0] = new System.Drawing.Imaging.EncoderParameter(Encoder.Quality, quality);
ImageCodecInfo[] ies = ImageCodecInfo.GetImageEncoders();
imageToSave.Save(stream, ies[1], parameters);
} else {
imageToSave.Save(stream, imfo);
}
} finally {
// cleanup if needed
if (disposeImage && imageToSave != null) {
imageToSave.Dispose();
}
}
}
