static public void ProcessImage(Element image)
{
bool image_mask = image.IsImageMask();
bool interpolate = image.IsImageInterpolate();
int width = image.GetImageWidth();
int height = image.GetImageHeight();
int out_data_sz = width * height * 3;
Console.WriteLine("Image: width=\"{0:d}\" height=\"{1:d}\"", width, height);
// Matrix2D mtx = image.GetCTM(); // image matrix (page positioning info)
// ++image_counter;
// System.Drawing.Bitmap bmp = image.GetBitmap();
// bmp.Save(output_path + "reader_img_extract_" + image_counter.ToString() + ".png", System.Drawing.Imaging.ImageFormat.Png);
//
// Alternatively you can use GetImageData to read the raw (decoded) image data
// image.GetBitsPerComponent();
// image.GetImageData(); // get raw image data
// another approach is to use Image2RGB filter that converts every image to
// RGB format. This could save you time since you don't need to deal with color
// conversions, image up-sampling, decoding etc.
// ----------------
Image2RGB img_conv = new Image2RGB(image); // Extract and convert image to RGB 8-bpc format
FilterReader reader = new FilterReader(img_conv); //
byte[] image_data_out = new byte[out_data_sz]; // A buffer used to keep image data.
reader.Read(image_data_out); // image_data_out contains RGB image data.
// ----------------
// Note that you don't need to read a whole image at a time. Alternatively
// you can read a chuck at a time by repeatedly calling reader.Read(buf, buf_sz)
// until the function returns 0.
}
protected T ReadFilter <T>(byte[] source) where T : BaseFilter
{
var mem = new MemoryStream();
mem.Write(source, 0, source.Length);
mem.Seek(0, SeekOrigin.Begin);
var reader = new SwfStreamReader(mem);
var filterReader = new FilterReader();
var filter = filterReader.Read(reader);
Assert.AreEqual(mem.Length, mem.Position, "Should reach end of stream");
return((T)filter);
}
static byte[] FlipImage(Element element)
{
Image2RGB image2rgb = new Image2RGB(element);
int width = element.GetImageWidth();
int height = element.GetImageHeight();
int out_data_sz = width * height * 3;
int stride = width * 3;
FilterReader reader = new FilterReader(image2rgb);
byte[] image_data = new byte[out_data_sz];
byte[] flipped_data = new byte[out_data_sz];
reader.Read(image_data);
for (int row = 0; row < height; ++row)
{
Buffer.BlockCopy(image_data, row * stride, flipped_data, out_data_sz - (stride * (row + 1)), stride);
}
return(flipped_data);
}