public static byte[] Decode(int bitsPerChar, DecodeCallback decodeCallback,
IEnumerable <char> value, int bitsToDecode)
{
Helper.CheckRange("bitsPerChar", bitsPerChar, 1, 8);
Helper.CheckNull("decodeCallback", decodeCallback);
Helper.CheckNull("value", value);
Helper.CheckRange("bitsToDecode", bitsToDecode, 0, int.MaxValue - 7);
using (IEnumerator <char> e = value.GetEnumerator()) {
byte[] bytes = new byte[(bitsToDecode + 7) / 8];
int j = 0, bits = 0, buffer = 0;
while (bitsToDecode > 0)
{
while (bits < 8)
{
if (!e.MoveNext())
{
break;
}
bits += bitsPerChar; buffer <<= bitsPerChar;
buffer |= decodeCallback(e.Current) & ((1 << bitsPerChar) - 1);
}
int chunk = Math.Min(8, Math.Min(bits, bitsToDecode));
bits -= chunk; bitsToDecode -= 8;
int eightBit = buffer >> bits; buffer ^= eightBit << bits;
bytes[j++] = (byte)(eightBit << (8 - chunk));
}
Debug.Assert(j == bytes.Length);
return(bytes);
}
}
public void Decode(byte[] buf, DecodeCallback callback)
{
buffer = buffer.Concat(buf);
while (buffer.Count() > 0)
{
if (packetLength == 0)
{
if (buffer.Count() < 4)
{
return;
}
packetLength = BitConverter.ToInt32(buffer.Take(4).ToArray());
buffer = buffer.Skip(4);
}
if (buffer.Count() < packetLength)
{
return;
}
string message = Encoding.UTF8.GetString(buffer.Skip(8).Take(packetLength - 9).ToArray());
buffer = buffer.Skip(packetLength);
packetLength = 0;
callback(message);
}
}
public static byte[] Decode(int bitsPerChar, DecodeCallback decodeCallback,
char[] value)
{
Helper.CheckRange("bitsPerChar", bitsPerChar, 1, 8);
Helper.CheckNull("value", value);
Helper.CheckRange("value", value, 0, int.MaxValue / bitsPerChar);
return(Decode(bitsPerChar, decodeCallback, value, value.Length * bitsPerChar));
}
public static byte[] Decode(int bitsPerChar, DecodeCallback decodeCallback,
char[] value)
{
Helper.CheckRange("bitsPerChar", bitsPerChar, 1, 8);
Helper.CheckNull("value", value);
Helper.CheckRange("value", value, 0, int.MaxValue/bitsPerChar);
return Decode(bitsPerChar, decodeCallback, value, value.Length*bitsPerChar);
}
public static byte[] Decode(int bitsPerChar, DecodeCallback decodeCallback,
IEnumerable<char> value, int bitsToDecode)
{
Helper.CheckRange("bitsPerChar", bitsPerChar, 1, 8);
Helper.CheckNull("decodeCallback", decodeCallback);
Helper.CheckNull("value", value);
Helper.CheckRange("bitsToDecode", bitsToDecode, 0, int.MaxValue - 7);
using (IEnumerator<char> e = value.GetEnumerator())
{
byte[] bytes = new byte[(bitsToDecode + 7)/8];
int j = 0, bits = 0, buffer = 0;
while (bitsToDecode > 0)
{
while (bits < 8)
{
if (!e.MoveNext())
{
break;
}
bits += bitsPerChar;
buffer <<= bitsPerChar;
buffer |= decodeCallback(e.Current) & ((1 << bitsPerChar) - 1);
}
int chunk = Math.Min(8, Math.Min(bits, bitsToDecode));
bits -= chunk;
bitsToDecode -= 8;
int eightBit = buffer >> bits;
buffer ^= eightBit << bits;
bytes[j++] = (byte) (eightBit << (8 - chunk));
}
Debug.Assert(j == bytes.Length);
return bytes;
}
}
private static object ToneMap(ref FIBITMAP b, bool mayUnloadOriginal, ResizeSettings settings, DecodeCallback callback)
{
return(callback(ref b, mayUnloadOriginal));//Tone mapping is disabled, not yet functional
FIBITMAP m = FIBITMAP.Zero;
try {
var alg = settings.Get <ToneMappingAlgorithm>("fi.tonemap", ToneMappingAlgorithm.None);
if (alg == ToneMappingAlgorithm.Drago)
{
m = FreeImage.TmoDrago03(b, 2.2, 0);
}
else if (alg == ToneMappingAlgorithm.Reinhard)
{
m = FreeImage.TmoReinhard05(b, 0, 0);
}
else if (alg == ToneMappingAlgorithm.Fattal)
{
m = FreeImage.TmoFattal02(b, 0.5, 0.85);
}
else
{
return(callback(ref b, mayUnloadOriginal));
}
if (mayUnloadOriginal)
{
FreeImage.UnloadEx(ref b);
}
return(callback(ref m, true));
} finally {
if (!m.IsNull)
{
FreeImage.UnloadEx(ref m);
}
}
}
/// <summary>
/// Decodes the given stream, selects the correct page or frame, rotates it correctly (if autorotate=true), then executes the callback, then cleans up.
/// </summary>
/// <param name="s"></param>
/// <param name="settings"></param>
/// <param name="callback"></param>
/// <returns></returns>
public static object DecodeAndCall(Stream s, ResizeSettings settings, DecodeCallback callback)
{
if (!FreeImageAPI.FreeImage.IsAvailable())
{
return(null);
}
FREE_IMAGE_LOAD_FLAGS flags = FREE_IMAGE_LOAD_FLAGS.DEFAULT;
//If we're not tone-mapping the raw file, convert it for display
if (!HasToneMappingCommands(settings))
{
flags |= FREE_IMAGE_LOAD_FLAGS.RAW_DISPLAY;
}
bool usethumb = ("true".Equals(settings["usepreview"], StringComparison.OrdinalIgnoreCase));
if (usethumb)
{
flags |= FREE_IMAGE_LOAD_FLAGS.RAW_PREVIEW;
}
bool autorotate = ("true".Equals(settings["autorotate"], StringComparison.OrdinalIgnoreCase));
if (autorotate)
{
flags |= FREE_IMAGE_LOAD_FLAGS.JPEG_EXIFROTATE;
}
int page = 0;
if (!string.IsNullOrEmpty(settings["page"]) && !int.TryParse(settings["page"], NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out page))
{
page = 0;
}
int frame = 0;
if (!string.IsNullOrEmpty(settings["frame"]) && !int.TryParse(settings["frame"], NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out frame))
{
frame = 0;
}
if (page == 0 && frame != 0)
{
page = frame;
}
Stopwatch sw = new Stopwatch();
sw.Start();
if (page > 1)
{
FREE_IMAGE_FORMAT fmt = FREE_IMAGE_FORMAT.FIF_UNKNOWN;
FIMULTIBITMAP mb = FreeImage.OpenMultiBitmapFromStream(s, ref fmt, flags);
//Prevent asking for a non-existent page
int pages = FreeImage.GetPageCount(mb);
if (page > pages)
{
page = pages;
}
try {
if (mb.IsNull)
{
return(null);
}
FIBITMAP bPage = FreeImage.LockPage(mb, page - 1);
if (bPage.IsNull)
{
return(null);
}
try {
sw.Stop();
return(ToneMap(ref bPage, false, settings, callback));
} finally {
FreeImage.UnlockPage(mb, bPage, false);
}
} finally {
if (!mb.IsNull)
{
FreeImage.CloseMultiBitmapEx(ref mb, FREE_IMAGE_SAVE_FLAGS.DEFAULT);
}
}
}
else
{
FIBITMAP original = FIBITMAP.Zero;
try {
original = FreeImage.LoadFromStream(s, flags);
sw.Stop();
if (original.IsNull)
{
return(null);
}
return(ToneMap(ref original, true, settings, callback));
} finally {
if (!original.IsNull)
{
FreeImage.UnloadEx(ref original);
}
}
}
}
public static void Decode(Bitmap b, DecodeOptions options, DecodeCallback Callback)
{
Decode(b, options, Callback, 0, null);
}
public static void Decode(
Bitmap b,
DecodeOptions options,
DecodeCallback Callback,
DiagnosticImageStyles diagnosticImageStyle, DecodeDiagnosticImageCallback DiagnosticImageCallback)
{
Exception decodeException = null;
byte status;
try {
int bitmapStride;
byte[] pxl = BitmapToByteArray(b, out bitmapStride);
DmtxDiagnosticImageCallback diagnosticImageCallbackParam = null;
if (DiagnosticImageCallback != null)
{
diagnosticImageCallbackParam = delegate(IntPtr data, uint totalBytes, uint headerBytes) {
try {
byte[] pnmData = new byte[totalBytes];
Marshal.Copy(data, pnmData, 0, pnmData.Length);
using (MemoryStream pnmInputStream = new MemoryStream(pnmData)) {
Bitmap bm = PnmToBitmap(pnmInputStream);
DiagnosticImageCallback(bm);
}
} catch (Exception ex) {
decodeException = ex;
}
};
}
status = DmtxDecode(
pxl,
(UInt32)b.Width,
(UInt32)b.Height,
(UInt32)bitmapStride,
options,
diagnosticImageCallbackParam, diagnosticImageStyle,
delegate(DecodedInternal dmtxDecodeResult) {
DmtxDecoded result;
try {
result = new DmtxDecoded();
result.Corners = dmtxDecodeResult.Corners;
result.SymbolInfo = dmtxDecodeResult.SymbolInfo;
result.Data = new byte[dmtxDecodeResult.DataSize];
for (int dataIdx = 0; dataIdx < dmtxDecodeResult.DataSize; dataIdx++)
{
result.Data[dataIdx] = Marshal.ReadByte(dmtxDecodeResult.Data, dataIdx);
}
Callback(result);
return(true);
} catch (Exception ex) {
decodeException = ex;
return(false);
}
});
} catch (Exception ex) {
throw new DmtxException("Error calling native function.", ex);
}
if (decodeException != null)
{
throw decodeException;
}
if (status == RETURN_NO_MEMORY)
{
throw new DmtxOutOfMemoryException("Not enough memory.");
}
else if (status == RETURN_INVALID_ARGUMENT)
{
throw new DmtxInvalidArgumentException("Invalid options configuration.");
}
else if (status > 0)
{
throw new DmtxException("Unknown error.");
}
}
/// <summary>
/// Decodes the given stream, selects the correct page or frame, rotates it correctly (if autorotate=true), then executes the callback, then cleans up.
/// </summary>
/// <param name="s"></param>
/// <param name="settings"></param>
/// <param name="callback"></param>
/// <returns></returns>
public static object DecodeAndCall(Stream s, ResizeSettings settings, DecodeCallback callback)
{
if (!FreeImageAPI.FreeImage.IsAvailable()) return null;
FREE_IMAGE_LOAD_FLAGS flags = FREE_IMAGE_LOAD_FLAGS.DEFAULT;
//If we're not tone-mapping the raw file, convert it for display
if (!HasToneMappingCommands(settings)) flags |= FREE_IMAGE_LOAD_FLAGS.RAW_DISPLAY;
bool usethumb = ("true".Equals(settings["usepreview"], StringComparison.OrdinalIgnoreCase));
if (usethumb) flags |= FREE_IMAGE_LOAD_FLAGS.RAW_PREVIEW;
bool autorotate = ("true".Equals(settings["autorotate"], StringComparison.OrdinalIgnoreCase));
if (autorotate) flags |= FREE_IMAGE_LOAD_FLAGS.JPEG_EXIFROTATE;
int page = 0;
if (!string.IsNullOrEmpty(settings["page"]) && !int.TryParse(settings["page"], NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out page))
page = 0;
int frame = 0;
if (!string.IsNullOrEmpty(settings["frame"]) && !int.TryParse(settings["frame"], NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out frame))
frame = 0;
if (page == 0 && frame != 0) page = frame;
Stopwatch sw = new Stopwatch();
sw.Start();
if (page > 1) {
FREE_IMAGE_FORMAT fmt = FREE_IMAGE_FORMAT.FIF_UNKNOWN;
FIMULTIBITMAP mb = FreeImage.OpenMultiBitmapFromStream(s, ref fmt, flags);
//Prevent asking for a non-existent page
int pages = FreeImage.GetPageCount(mb);
if (page > pages) page = pages;
try {
if (mb.IsNull) return null;
FIBITMAP bPage = FreeImage.LockPage(mb, page - 1);
if (bPage.IsNull) return null;
try {
sw.Stop();
return ToneMap(ref bPage, false, settings, callback);
} finally {
FreeImage.UnlockPage(mb, bPage, false);
}
} finally {
if (!mb.IsNull) FreeImage.CloseMultiBitmapEx(ref mb, FREE_IMAGE_SAVE_FLAGS.DEFAULT);
}
} else {
FIBITMAP original = FIBITMAP.Zero;
try {
original = FreeImage.LoadFromStream(s, flags);
sw.Stop();
if (original.IsNull) return null;
return ToneMap(ref original, true, settings, callback);
} finally {
if (!original.IsNull) FreeImage.UnloadEx(ref original);
}
}
}
private static object ToneMap(ref FIBITMAP b, bool mayUnloadOriginal, ResizeSettings settings, DecodeCallback callback)
{
return callback(ref b, mayUnloadOriginal);//Tone mapping is disabled, not yet functional
FIBITMAP m = FIBITMAP.Zero;
try {
var alg = NameValueCollectionExtensions.Get<ToneMappingAlgorithm>(settings, "fi.tonemap", ToneMappingAlgorithm.None);
if (alg == ToneMappingAlgorithm.Drago){
m = FreeImage.TmoDrago03(b, 2.2, 0);
}else if (alg == ToneMappingAlgorithm.Reinhard){
m = FreeImage.TmoReinhard05(b, 0, 0);
}else if (alg == ToneMappingAlgorithm.Fattal){
m = FreeImage.TmoFattal02(b, 0.5, 0.85);
}else{
return callback(ref b, mayUnloadOriginal);
}
if (mayUnloadOriginal) FreeImage.UnloadEx(ref b);
return callback(ref m, true);
} finally {
if (!m.IsNull) FreeImage.UnloadEx(ref m);
}
}
public static extern IntPtr GetRtspPlayer(string rtspUri, DecodeCallback fDecodeCallback, MediaEndedCallback fMediaEndedCallback, ErrorCallback fErrorCallback, int timeout, IntPtr windowHandle);
public static extern IntPtr GetLivePlayer(UInt16 wVendorType, DecodeCallback fDecodeCallback, EndInitCallback fEndInitCallback, String rtspPath, uint mode, IntPtr windowHandle);
public static extern IntPtr GetPlayer(String pchFileName, UInt16 wVendorType, DecodeCallback fDecodeCallback, MediaEndedCallback fMediaEndedCallback, IntPtr windowHandle);
public static void Decode(
Bitmap b,
DecodeOptions options,
DecodeCallback Callback,
DiagnosticImageStyles diagnosticImageStyle, DecodeDiagnosticImageCallback DiagnosticImageCallback)
{
Exception decodeException = null;
byte status;
try {
int bitmapStride;
byte[] pxl = BitmapToByteArray(b, out bitmapStride);
DmtxDiagnosticImageCallback diagnosticImageCallbackParam = null;
if (DiagnosticImageCallback != null) {
diagnosticImageCallbackParam = delegate(IntPtr data, uint totalBytes, uint headerBytes) {
try {
byte[] pnmData = new byte[totalBytes];
Marshal.Copy(data, pnmData, 0, pnmData.Length);
using (MemoryStream pnmInputStream = new MemoryStream(pnmData)) {
Bitmap bm = PnmToBitmap(pnmInputStream);
DiagnosticImageCallback(bm);
}
} catch (Exception ex) {
decodeException = ex;
}
};
}
status = DmtxDecode(
pxl,
(UInt32)b.Width,
(UInt32)b.Height,
(UInt32)bitmapStride,
options,
diagnosticImageCallbackParam, diagnosticImageStyle,
delegate(DecodedInternal dmtxDecodeResult) {
DmtxDecoded result;
try {
result = new DmtxDecoded();
result.Corners = dmtxDecodeResult.Corners;
result.SymbolInfo = dmtxDecodeResult.SymbolInfo;
result.Data = new byte[dmtxDecodeResult.DataSize];
for (int dataIdx = 0; dataIdx < dmtxDecodeResult.DataSize; dataIdx++) {
result.Data[dataIdx] = Marshal.ReadByte(dmtxDecodeResult.Data, dataIdx);
}
Callback(result);
return true;
} catch (Exception ex) {
decodeException = ex;
return false;
}
});
} catch (Exception ex) {
throw new DmtxException("Error calling native function.", ex);
}
if (decodeException != null) {
throw decodeException;
}
if (status == RETURN_NO_MEMORY) {
throw new DmtxOutOfMemoryException("Not enough memory.");
} else if (status == RETURN_INVALID_ARGUMENT) {
throw new DmtxInvalidArgumentException("Invalid options configuration.");
} else if (status > 0) {
throw new DmtxException("Unknown error.");
}
}
public static void Decode(Bitmap b, DecodeOptions options, DecodeCallback Callback)
{
Decode(b, options, Callback, 0, null);
}