static void Main(string[] args)
{
//List of files to scan
List<string> files = new List<string>();
//Copy arguments into files (ignore this part)
for(int i = 1; i < args.Length; i++){
if(args[i] == "--help" || args[i] == "-h")
Console.WriteLine("Usage ./{0} [file1] [file2] [file3] ...", args[0]);
else
files.Add(args[i]);
}
if(files.Count == 0)
files.Add("barcode.bmp");
//Create an instance of scanner
using(ImageScanner scanner = new ImageScanner()){
//We won't use caching here
scanner.Cache = false;
//For each file that we need scanned
foreach(string file in files){
Console.WriteLine("Symbols in {0}:", file);
//Open the file, using System.Drawing to read it
System.Drawing.Image img = System.Drawing.Image.FromFile(file);
//Scan the image for symbols, using System.Drawing and ZBar for conversation
//Please note that this is no way an efficient implementation, more optimizations
//of the conversation code etc, could easily be implemented.
List<Symbol> symbols = scanner.Scan(img);
//For each symbol we've found
foreach(Symbol symbol in symbols)
Console.WriteLine("\t" + symbol.ToString());
}
}
}
static void Main(string[] args)
{
//List of files to scan
List <string> files = new List <string>();
//Copy arguments into files (ignore this part)
for (int i = 1; i < args.Length; i++)
{
if (args[i] == "--help" || args[i] == "-h")
{
Console.WriteLine("Usage ./{0} [file1] [file2] [file3] ...", args[0]);
}
else
{
files.Add(args[i]);
}
}
if (files.Count == 0)
{
files.Add("barcode.bmp");
}
//Create an instance of scanner
using (var scanner = new ZBar.ImageScanner()){
//We won't use caching here
scanner.Cache = false;
//For each file that we need scanned
foreach (string file in files)
{
Console.WriteLine("Symbols in {0}:", file);
//Open the file, using System.Drawing to read it
System.Drawing.Image img = System.Drawing.Image.FromFile(file);
//Scan the image for symbols, using System.Drawing and ZBar for conversation
//Please note that this is no way an efficient implementation, more optimizations
//of the conversation code etc, could easily be implemented.
List <Symbol> symbols = scanner.Scan(img);
//For each symbol we've found
foreach (Symbol symbol in symbols)
{
Console.WriteLine("\t" + symbol.ToString());
}
}
}
}
static void Main(string[] args)
{
//Don't care to read the header now... it takes time :)
//So I'm just hardcoding size...
uint width = 1200;
uint height = 775;
byte[] data = new byte[width * height * 3];
//Read the file
using(FileStream fs = new FileStream("barcode.bmp", FileMode.Open)) {
//Skip the header
fs.Seek(54, SeekOrigin.Begin);
fs.Read(data, 0, data.Length);
}
//Create an empty image instance
Image img = new Image();
img.Data = data; //Set the data property
img.Width = width; //Set width and height
img.Height = height;
img.Format = 0x33424752; //Trying with RGB3, as I know it's 24bit BMP
Image grey = img.Convert(0x30303859); //Convert to GREY/Y800
//Create a scanner
using(ImageScanner scanner = new ImageScanner()) {
scanner.Cache = false;
scanner.Scan(grey); //Scan the image
}
Console.WriteLine("Symboles: ");
//Now enumerate over the symboles found... These have been associated with grey
foreach(Symbol sym in grey.Symbols) {
Console.WriteLine(sym.ToString());
}
Console.WriteLine("-End of program-");
Console.ReadLine();
}
/// <summary>
/// Process video, the worker thread
/// </summary>
private void ProcessVideo()
{
using(Video video = new Video()){
try{
video.Open(this.currentDevice);
video.Enabled = true;
using(ImageScanner scanner = new ImageScanner()){
scanner.Cache = true;
this.CaptureVideo(video, scanner);
}
video.Enabled = false;
}
catch(ZBarException ex){
lock(this.drawLock){
this.toDraw = null;
this.symbols = null;
}
GLib.IdleHandler hdl = delegate(){
if(this.Stopped != null)
this.Stopped(this, new EventArgs());
if(this.Error != null)
this.Error(this, new ErrorEventArgs(ex.Message, ex));
this.QueueDraw();
return false;
};
GLib.Idle.Add(hdl);
}
}
}
public PreviewCallback ()
{
scanner = new ImageScanner ();
scanner.SetConfig (0, Config.XDensity, 3);
scanner.SetConfig (0, Config.YDensity, 3);
}
public void ConvertAndScanBMP()
{
System.Drawing.Image img = System.Drawing.Image.FromFile("images/barcode.bmp");
ImageScanner scanner = new ImageScanner();
List<Symbol> symbols = scanner.Scan(img);
Assert.AreEqual(1, symbols.Count, "Didn't find the symbols");
Assert.IsTrue(SymbolType.EAN13 == symbols[0].Type, "Didn't get the barcode type right");
Assert.AreEqual("0123456789012", symbols[0].Data, "Didn't read the correct barcode");
}
public void ScanEan13_SymbolEnabled() {
//var rawImage = System.IO.File.ReadAllBytes ("../ean13.png");
var bitmap = Android.Graphics.BitmapFactory.DecodeFile ("../ean13.png");
var image = new Image (bitmap.Width, bitmap.Height, "Y800");
image.SetData (bitmap.ToArray<byte>());
var scanner = new ImageScanner ();
scanner.DisableSymbols (SymbolType.None);
scanner.EnableSymbols (SymbolType.Ean13);
var result = scanner.ScanImage (image);
Assert.True (result > 0);
var symbols = scanner.Results;
foreach (var symbol in symbols) {
Assert.AreEqual (symbol.Type, SymbolType.Ean13);
Assert.AreEqual (symbol.Data, "2398000012344");
}
}
/// <summary>
/// Capture and scan images
/// </summary>
/// <remarks>
/// This method will also flip the images so that they need not be flipped when drawing.
/// </remarks>
private void CaptureVideo(Video video, ImageScanner scanner)
{
while(true){
using(ZBar.Image frame = video.NextFrame()){
using(ZBar.Image bwImg = frame.Convert(0x30303859)){
//Scan the image for bar codes
scanner.Scan(bwImg);
//Get the data, width, height and symboles for the image
byte[] data = bwImg.Data;
int w = (int)bwImg.Width;
int h = (int)bwImg.Height;
var symbols = new List<Symbol> (bwImg.Symbols);
// Resize
// number of pixels to shift in the original image
double stepX = (double)w / AllocatedWidth;
double stepY = (double)h / AllocatedHeight;
// don't do enlarging
if (stepX <= 1 && stepY <= 1)
return;
double smallestStep = Math.Max (stepX, stepY);
stepX = stepY = smallestStep;
int maxHeight = (int)((double)h / smallestStep);
int maxWidth = (int)((double)w / smallestStep);
int newPixels = maxWidth * maxHeight;
byte[] resizedFrame = new byte[newPixels];
double sX = 0, sY = 0;
int i;
for (int j = 0; j < newPixels; j++) {
i = (int)sX + (int)((int)sY * w);
// stop exceptions
if (i >= data.Length) {
Console.WriteLine ("Trying to access {0} on the old frame, up to {1} on new frame", i, j);
break;
}
resizedFrame[j] = data[i];
sX += stepX;
if ((j + 1) % maxWidth == 0) {
sY += stepY;
sX = 0;
}
}
w = maxWidth;
h = maxHeight;
data = resizedFrame;
//Flip the image vertically, if needed
if(this.Flip){
for(int ih = 0; ih < h; ih++){
for(int iw = 0; iw < w / 2; iw++){
//TODO: The offsets below could be computed more efficiently, but I don't care this happens on a thread... :)
int p1 = w * ih + iw;
int p2 = w * ih + (w - iw- 1);
//Swap bytes:
byte b1 = data[p1];
data[p1] = data[p2];
data[p2] = b1;
}
}
}
if (Rotate) {
int l = data.Length - 1;
for (int p = 0; p < data.Length / 2; p++) {
//Swap bytes:
var j = l - p;
byte b1 = data[j];
data[j] = data[p];
data[p] = b1;
}
}
//Lock the drawing process and pass it the data we aquired
lock(this.drawLock){
this.toDraw = data;
this.toDrawWidth = w;
this.toDrawHeight = h;
this.symbols = symbols;
}
this.ThreadSafeRedraw();
}
}
}
}
