/// <summary>
/// Gets an instance of an Image.
/// </summary>
/// <param name="url">an URL</param>
/// <returns>an object of type Gif, Jpeg or Png</returns>
public static Image GetInstance(Uri url, bool handleIncorrectImage) {
Stream istr = null;
try {
WebRequest w = WebRequest.Create(url);
w.Credentials = CredentialCache.DefaultCredentials;
istr = w.GetResponse().GetResponseStream();
int c1 = istr.ReadByte();
int c2 = istr.ReadByte();
int c3 = istr.ReadByte();
int c4 = istr.ReadByte();
// jbig2
int c5 = istr.ReadByte();
int c6 = istr.ReadByte();
int c7 = istr.ReadByte();
int c8 = istr.ReadByte();
istr.Close();
istr = null;
if (c1 == 'G' && c2 == 'I' && c3 == 'F') {
GifImage gif = new GifImage(url);
Image img = gif.GetImage(1);
return img;
}
if (c1 == 0xFF && c2 == 0xD8) {
return new Jpeg(url);
}
if (c1 == 0x00 && c2 == 0x00 && c3 == 0x00 && c4 == 0x0c) {
return new Jpeg2000(url);
}
if (c1 == 0xff && c2 == 0x4f && c3 == 0xff && c4 == 0x51) {
return new Jpeg2000(url);
}
if (c1 == PngImage.PNGID[0] && c2 == PngImage.PNGID[1]
&& c3 == PngImage.PNGID[2] && c4 == PngImage.PNGID[3]) {
Image img = PngImage.GetImage(url);
return img;
}
if (c1 == 0xD7 && c2 == 0xCD) {
Image img = new ImgWMF(url);
return img;
}
if (c1 == 'B' && c2 == 'M') {
Image img = BmpImage.GetImage(url);
return img;
}
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42)
|| (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0)) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(file);
} else
ra = new RandomAccessFileOrArray(url);
Image img = TiffImage.GetTiffImage(ra, handleIncorrectImage, 1);
img.url = url;
return img;
} finally {
if (ra != null)
ra.Close();
}
}
if ( c1 == 0x97 && c2 == 'J' && c3 == 'B' && c4 == '2' &&
c5 == '\r' && c6 == '\n' && c7 == 0x1a && c8 == '\n' ) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(file);
} else
ra = new RandomAccessFileOrArray(url);
Image img = JBIG2Image.GetJbig2Image(ra, 1);
img.url = url;
return img;
} finally {
if (ra != null)
ra.Close();
}
}
throw new IOException(MessageLocalization.GetComposedMessage("unknown.image.format", url.ToString()));
} finally {
if (istr != null) {
istr.Close();
}
}
}
/// <summary>
/// Gets an instance of an Image.
/// </summary>
/// <param name="url">an URL</param>
/// <returns>an object of type Gif, Jpeg or Png</returns>
public static Image GetInstance(Uri url)
{
Stream istr = null;
try {
//NETCF does not know fileWebRequest (file://...)
#if !NETCF
WebRequest w = WebRequest.Create(url);
istr = w.GetResponse().GetResponseStream();
#else
istr = new FileStream(url.LocalPath, FileMode.Open);
#endif
int c1 = istr.ReadByte();
int c2 = istr.ReadByte();
int c3 = istr.ReadByte();
int c4 = istr.ReadByte();
istr.Close();
istr = null;
if (c1 == 'G' && c2 == 'I' && c3 == 'F') {
GifImage gif = new GifImage(url);
Image img = gif.GetImage(1);
return img;
}
if (c1 == 0xFF && c2 == 0xD8) {
return new Jpeg(url);
}
if (c1 == PngImage.PNGID[0] && c2 == PngImage.PNGID[1]
&& c3 == PngImage.PNGID[2] && c4 == PngImage.PNGID[3]) {
Image img = PngImage.GetImage(url);
return img;
}
if (c1 == 0xD7 && c2 == 0xCD) {
Image img = new ImgWMF(url);
return img;
}
if (c1 == 'B' && c2 == 'M') {
Image img = BmpImage.GetImage(url);
return img;
}
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42)
|| (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0)) {
RandomAccessFileOrArray ra = null;
try
{
if (url.IsFile)
{
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(file);
}
else
ra = new RandomAccessFileOrArray(url);
Image img = TiffImage.GetTiffImage(ra, 1);
img.url = url;
return img;
}
catch (InvalidCastException ix)
{
System.Diagnostics.Debug.WriteLine("InvalidCastException in TIFF adding: " + ix.Message + ":" + ix.StackTrace);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception in TIFF adding:" + ex.Message + ":" + ex.InnerException.Message);
}
finally {
if (ra != null)
ra.Close();
}
}
throw new IOException(url.ToString()
+ " is not a recognized imageformat.");
} finally {
if (istr != null) {
istr.Close();
}
}
}
/// <summary>
/// Gets an instance of an Image.
/// </summary>
/// <param name="url">an URL</param>
/// <returns>an object of type Gif, Jpeg or Png</returns>
public static Image GetInstance(Uri url, bool recoverFromImageError) {
Stream istr = null;
RandomAccessSourceFactory randomAccessSourceFactory = new RandomAccessSourceFactory();
try {
WebRequest w = WebRequest.Create(url);
w.Credentials = CredentialCache.DefaultCredentials;
istr = w.GetResponse().GetResponseStream();
int c1 = istr.ReadByte();
int c2 = istr.ReadByte();
int c3 = istr.ReadByte();
int c4 = istr.ReadByte();
// jbig2
int c5 = istr.ReadByte();
int c6 = istr.ReadByte();
int c7 = istr.ReadByte();
int c8 = istr.ReadByte();
istr.Close();
istr = null;
if (c1 == 'G' && c2 == 'I' && c3 == 'F') {
GifImage gif = new GifImage(url);
Image img = gif.GetImage(1);
return img;
}
if (c1 == 0xFF && c2 == 0xD8) {
return new Jpeg(url);
}
if (c1 == 0x00 && c2 == 0x00 && c3 == 0x00 && c4 == 0x0c) {
return new Jpeg2000(url);
}
if (c1 == 0xff && c2 == 0x4f && c3 == 0xff && c4 == 0x51) {
return new Jpeg2000(url);
}
if (c1 == PngImage.PNGID[0] && c2 == PngImage.PNGID[1]
&& c3 == PngImage.PNGID[2] && c4 == PngImage.PNGID[3]) {
Image img = PngImage.GetImage(url);
return img;
}
if (c1 == 0xD7 && c2 == 0xCD) {
Image img = new ImgWMF(url);
return img;
}
if (c1 == 'B' && c2 == 'M') {
Image img = BmpImage.GetImage(url);
return img;
}
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42)
|| (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0)) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(randomAccessSourceFactory.CreateBestSource(file));
} else
ra = new RandomAccessFileOrArray(randomAccessSourceFactory.CreateSource(url));
Image img = TiffImage.GetTiffImage(ra, 1);
img.url = url;
return img;
} catch (Exception e) {
if (recoverFromImageError) {
// reruns the getTiffImage() with several error recovering workarounds in place
// not guaranteed to work with every TIFF
Image img = TiffImage.GetTiffImage(ra, recoverFromImageError, 1);
img.url = url;
return img;
}
throw e;
}
finally {
if (ra != null)
ra.Close();
}
}
if ( c1 == 0x97 && c2 == 'J' && c3 == 'B' && c4 == '2' &&
c5 == '\r' && c6 == '\n' && c7 == 0x1a && c8 == '\n' ) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(randomAccessSourceFactory.CreateBestSource(file));
} else
ra = new RandomAccessFileOrArray(randomAccessSourceFactory.CreateSource(url));
Image img = JBIG2Image.GetJbig2Image(ra, 1);
img.url = url;
return img;
} finally {
if (ra != null)
ra.Close();
}
}
throw new IOException(MessageLocalization.GetComposedMessage("unknown.image.format", url.ToString()));
} finally {
if (istr != null) {
istr.Close();
}
}
}
/// <summary>
/// Gets an instance of an Image.
/// </summary>
/// <param name="url">an URL</param>
/// <returns>an object of type Gif, Jpeg or Png</returns>
public static Image GetLocalInstance(string sFileName)
{
Stream istr = null;
try
{
#if !NETCF
WebRequest w = WebRequest.Create(url);
istr = w.GetResponse().GetResponseStream();
#else
istr = new FileStream(sFileName, FileMode.Open);
#endif
//istr = w.GetResponse().GetResponseStream();
int c1 = istr.ReadByte();
int c2 = istr.ReadByte();
int c3 = istr.ReadByte();
int c4 = istr.ReadByte();
istr.Close();
istr = null;
if (c1 == 'G' && c2 == 'I' && c3 == 'F')
{
GifImage gif = new GifImage(sFileName);
Image img = gif.GetImage(1);
return img;
}
if (c1 == 0xFF && c2 == 0xD8)
{
return new Jpeg(sFileName);
}
if (c1 == PngImage.PNGID[0] && c2 == PngImage.PNGID[1]
&& c3 == PngImage.PNGID[2] && c4 == PngImage.PNGID[3])
{
Image img = PngImage.GetImage(sFileName);
return img;
}
if (c1 == 0xD7 && c2 == 0xCD)
{
Image img = new ImgWMF(sFileName);
return img;
}
if (c1 == 'B' && c2 == 'M')
{
Image img = BmpImage.GetImage(sFileName);
return img;
}
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42)
|| (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0))
{
RandomAccessFileOrArray ra = null;
try
{
ra = new RandomAccessFileOrArray(sFileName);
Image img = TiffImage.GetTiffImage(ra, 1);
img.url = new Uri(sFileName);
return img;
}
finally
{
if (ra != null)
ra.Close();
}
}
throw new IOException(sFileName.ToString()
+ " is not a recognized imageformat.");
}
finally
{
if (istr != null)
{
istr.Close();
}
}
}
/// <summary>
/// Gets an instance of an Image.
/// </summary>
/// <param name="url">an URL</param>
/// <returns>an object of type Gif, Jpeg or Png</returns>
public static Image GetInstance(Uri url) {
// Add support for base64 encoded pngs.
if (url.Scheme == "data")
{
if (url.AbsoluteUri.StartsWith("data:image/png;base64,"))
{
var base64Image = url.AbsoluteUri.Substring("data:image/png;base64,".Length);
var image = Convert.FromBase64String(base64Image);
return PngImage.GetImage(image);
}
}
Stream istr = null;
try {
WebRequest w = WebRequest.Create(url);
istr = w.GetResponse().GetResponseStream();
int c1 = istr.ReadByte();
int c2 = istr.ReadByte();
int c3 = istr.ReadByte();
int c4 = istr.ReadByte();
// jbig2
int c5 = istr.ReadByte();
int c6 = istr.ReadByte();
int c7 = istr.ReadByte();
int c8 = istr.ReadByte();
istr.Close();
istr = null;
if (c1 == 'G' && c2 == 'I' && c3 == 'F') {
GifImage gif = new GifImage(url);
Image img = gif.GetImage(1);
return img;
}
if (c1 == 0xFF && c2 == 0xD8) {
return new Jpeg(url);
}
if (c1 == 0x00 && c2 == 0x00 && c3 == 0x00 && c4 == 0x0c) {
return new Jpeg2000(url);
}
if (c1 == 0xff && c2 == 0x4f && c3 == 0xff && c4 == 0x51) {
return new Jpeg2000(url);
}
if (c1 == PngImage.PNGID[0] && c2 == PngImage.PNGID[1]
&& c3 == PngImage.PNGID[2] && c4 == PngImage.PNGID[3]) {
Image img = PngImage.GetImage(url);
return img;
}
if (c1 == 0xD7 && c2 == 0xCD) {
Image img = new ImgWMF(url);
return img;
}
if (c1 == 'B' && c2 == 'M') {
Image img = BmpImage.GetImage(url);
return img;
}
if ((c1 == 'M' && c2 == 'M' && c3 == 0 && c4 == 42)
|| (c1 == 'I' && c2 == 'I' && c3 == 42 && c4 == 0)) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(file);
} else
ra = new RandomAccessFileOrArray(url);
Image img = TiffImage.GetTiffImage(ra, 1);
img.url = url;
return img;
} finally {
if (ra != null)
ra.Close();
}
}
if ( c1 == 0x97 && c2 == 'J' && c3 == 'B' && c4 == '2' &&
c5 == '\r' && c6 == '\n' && c7 == 0x1a && c8 == '\n' ) {
RandomAccessFileOrArray ra = null;
try {
if (url.IsFile) {
String file = url.LocalPath;
ra = new RandomAccessFileOrArray(file);
} else
ra = new RandomAccessFileOrArray(url);
Image img = JBIG2Image.GetJbig2Image(ra, 1);
img.url = url;
return img;
} finally {
if (ra != null)
ra.Close();
}
}
throw new IOException(url.ToString()
+ " is not a recognized imageformat.");
} finally {
if (istr != null) {
istr.Close();
}
}
}
