/// <summary>
/// Writes a color image into a DjVu IW44 file. This function creates a
/// composite Form element containing one or more IW44 encoded chunks.
/// Data for each chunk is generated with a call to EncodeChunk method
/// while encoding is controlled by the corresponding parameters in an array
/// parameter settings.
/// </summary>
/// <param name="writer"></param>
/// <param name="settings"></param>
/// <returns></returns>
public DjvuFormElement EncodeImage(IDjvuWriter writer, int nchunks, InterWaveEncoderSettings[] settings,
ChunkType formType = ChunkType.PM44Form, ChunkType nodeType = ChunkType.PM44)
{
if (_YEncoder != null)
{
throw new DjvuInvalidOperationException($"Encoder already exists or left open from previous operation.");
}
int flag = 1;
PM44Form form = (PM44Form)DjvuParser.CreateEncodedDjvuNode(writer, null, formType, 0);
for (int i = 0; flag != 0 && i < nchunks; i++)
{
byte[] data = null;
using (MemoryStream stream = new MemoryStream())
{
flag = EncodeChunk(stream, settings[i]);
data = new byte[stream.Position];
Buffer.BlockCopy(stream.GetBuffer(), 0, data, 0, data.Length);
}
PM44Chunk chunk = (PM44Chunk)DjvuParser.CreateEncodedDjvuNode(writer, form, nodeType, data.Length);
chunk.ChunkData = data;
form.AddChild(chunk);
}
CloseEncoder();
return(form);
}
public void LoadTest078()
{
string file = Path.Combine(Util.ArtifactsPath, "test078C.djvu");
using (DjvuDocument document = new DjvuDocument())
{
int hash = file.GetHashCode();
document.Load(file, hash);
Assert.Equal(hash, document.Identifier);
IDjvuPage page = document.ActivePage;
PM44Chunk pmChunk = page.PageForm.Children[0] as PM44Chunk;
Assert.IsType <PM44Chunk>(pmChunk);
var img = pmChunk.Image;
Assert.NotNull(img);
var pixMap = new Wavelet.InterWavePixelMapDecoder();
pixMap = pmChunk.ProgressiveDecodeBackground(pixMap) as Wavelet.InterWavePixelMapDecoder;
Assert.NotNull(pixMap);
pmChunk = page.PageForm.Children[1] as PM44Chunk;
Assert.NotNull(pmChunk);
var pixMap2 = new Wavelet.InterWavePixelMapDecoder();
Assert.Throws <DjvuFormatException>(() => pmChunk.ProgressiveDecodeBackground(pixMap2));
// This time call will not throw
pmChunk.ProgressiveDecodeBackground(pixMap);
}
}
public void PM44ChunkTest()
{
Mock <IDjvuReader> readerMock = new Mock <IDjvuReader>();
readerMock.Setup(x => x.Position).Returns(1024);
PM44Chunk unk = new PM44Chunk(readerMock.Object, null, null, null, 0);
Assert.Equal <ChunkType>(ChunkType.PM44, unk.ChunkType);
Assert.Equal(ChunkType.PM44.ToString(), unk.Name);
Assert.Equal <long>(1024, unk.DataOffset);
}
public void ImageTest()
{
string file = Path.Combine(Util.ArtifactsDataPath, "test001C_P01.fg44");
using (FileStream stream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
using (DjvuReader reader = new DjvuReader(stream))
{
PM44Chunk unk = new PM44Chunk(reader, null, null, null, reader.Length);
Assert.Equal <ChunkType>(ChunkType.PM44, unk.ChunkType);
Assert.Equal(ChunkType.PM44.ToString(), unk.Name);
Assert.Equal <long>(0, unk.DataOffset);
Assert.Equal <long>(reader.Length, unk.Length);
IInterWavePixelMap map = unk.Image;
Assert.NotNull(map);
}
}
public void ReadDataTest()
{
Mock <IDjvuReader> readerMock = new Mock <IDjvuReader>();
readerMock.SetupProperty <long>(x => x.Position);
IDjvuReader reader = readerMock.Object;
reader.Position = 1024;
PM44Chunk unk = new PM44Chunk(readerMock.Object, null, null, null, 1024);
Assert.Equal <ChunkType>(ChunkType.PM44, unk.ChunkType);
Assert.Equal(ChunkType.PM44.ToString(), unk.Name);
Assert.Equal <long>(1024, unk.DataOffset);
unk.ReadData(reader);
Assert.Equal <long>(2048, reader.Position);
}
public static IDjvuNode CreateEncodedDjvuNode(IDjvuWriter writer, IDjvuElement parent, ChunkType chunkType, long length)
{
IDjvuNode result = null;
switch (chunkType)
{
case ChunkType.Djvm:
result = new DjvmChunk(writer, parent, length);
break;
case ChunkType.Djvu:
result = new DjvuChunk(writer, parent, length);
break;
case ChunkType.Djvi:
result = new DjviChunk(writer, parent, length);
break;
case ChunkType.Thum:
result = new ThumChunk(writer, parent, length);
break;
case ChunkType.Dirm:
result = new DirmChunk(writer, parent, length);
break;
case ChunkType.Navm:
result = new NavmChunk(writer, parent, length);
break;
case ChunkType.Anta:
result = new AntaChunk(writer, parent, length);
break;
case ChunkType.Antz:
result = new AntzChunk(writer, parent, length);
break;
case ChunkType.Txta:
result = new TxtaChunk(writer, parent, length);
break;
case ChunkType.Txtz:
result = new TxtzChunk(writer, parent, length);
break;
case ChunkType.Djbz:
result = new DjbzChunk(writer, parent, length);
break;
case ChunkType.Sjbz:
result = new SjbzChunk(writer, parent, length);
break;
case ChunkType.FG44:
result = new FG44Chunk(writer, parent, length);
break;
case ChunkType.BG44:
result = new BG44Chunk(writer, parent, length);
break;
case ChunkType.TH44:
result = new TH44Chunk(writer, parent, length);
break;
case ChunkType.BM44:
result = new BM44Chunk(writer, parent, length);
break;
case ChunkType.BM44Form:
result = new BM44Form(writer, parent, length);
break;
case ChunkType.PM44:
result = new PM44Chunk(writer, parent, length);
break;
case ChunkType.PM44Form:
result = new PM44Form(writer, parent, length);
break;
case ChunkType.Wmrm:
result = new WmrmChunk(writer, parent, length);
break;
case ChunkType.FGbz:
result = new FGbzChunk(writer, parent, length);
break;
case ChunkType.Info:
result = new InfoChunk(writer, parent, length);
break;
case ChunkType.Incl:
result = new InclChunk(writer, parent, length);
break;
case ChunkType.BGjp:
result = new BGjpChunk(writer, parent, length);
break;
case ChunkType.FGjp:
result = new FGjpChunk(writer, parent, length);
break;
case ChunkType.Smmr:
result = new SmmrChunk(writer, parent, length);
break;
default:
throw new DjvuInvalidOperationException($"Chunk type is not supported in encoding. ChunkType: {chunkType}");
}
return(result);
}
/// <summary>
/// Builds the appropriate chunk for the ID
/// </summary>
/// <returns></returns>
public static IDjvuNode CreateDecodedDjvuNode(IDjvuReader reader, IDjvuDocument rootDocument,
IDjvuElement parent, ChunkType chunkType,
string chunkID = "", long length = 0)
{
IDjvuNode result = null;
switch (chunkType)
{
case ChunkType.Djvm:
result = new DjvmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djvu:
result = new DjvuChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djvi:
result = new DjviChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Thum:
result = new ThumChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Dirm:
result = new DirmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Navm:
result = new NavmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Anta:
result = new AntaChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Antz:
result = new AntzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Txta:
result = new TxtaChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Txtz:
result = new TxtzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Djbz:
result = new DjbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Sjbz:
result = new SjbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FG44:
result = new FG44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BG44:
result = new BG44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.TH44:
result = new TH44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BM44:
result = new BM44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BM44Form:
result = new BM44Form(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.PM44:
result = new PM44Chunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.PM44Form:
result = new PM44Form(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Wmrm:
result = new WmrmChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FGbz:
result = new FGbzChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Info:
result = new InfoChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Incl:
result = new InclChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.BGjp:
result = new BGjpChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.FGjp:
result = new FGjpChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Smmr:
result = new SmmrChunk(reader, parent, rootDocument, chunkID, length);
break;
case ChunkType.Cida:
result = new CidaChunk(reader, parent, rootDocument, chunkID, length);
break;
default:
result = new UnknownChunk(reader, parent, rootDocument, chunkID, length);
break;
}
return(result);
}
public void EncodeImage_Theory(string fileName)
{
string file = Path.Combine(Util.ArtifactsPath, fileName);
string outFile = Path.Combine(Util.ArtifactsDataPath, fileName + ".djvu");
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(file))
{
bmp.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX);
int width = bmp.Width;
int height = bmp.Height;
var pixMap = PixelMapFromBitmap(bmp);
var map = new InterWavePixelMapEncoder();
map.InitializeEncoder(pixMap, null, YCrCbMode.Full);
int nchunks = 4;
int[] slices = new int[] { 74, 90, 98, 103 };
//float[] decibel = new float[] { 5.0f, 10.0f, 15.0f, 20.0f };
InterWaveEncoderSettings[] settings = new InterWaveEncoderSettings[nchunks];
if (fileName != "")
{
for (int i = 0; i < nchunks; i++)
{
settings[i] = new InterWaveEncoderSettings
{
Slices = slices[i]
};
}
}
//else
//{
// for (int i = 0; i < nchunks; i++)
// {
// settings[i] = new InterWaveEncoderSettings
// {
// Decibels = decibel[i]
// };
// }
//}
DjvuFormElement form = null;
using (MemoryStream stream = new MemoryStream())
using (IDjvuWriter writer = new DjvuWriter(stream))
form = map.EncodeImage(writer, nchunks, settings);
using (IDjvuWriter writer = new DjvuWriter(outFile))
form.WriteData(writer);
using (DjvuDocument doc = new DjvuDocument(outFile))
{
IDjvuPage page = doc.Pages[0];
PM44Form pageForm = (PM44Form)page.PageForm;
Assert.Equal(nchunks, pageForm.Children.Count);
Assert.NotNull(form);
Assert.Equal(nchunks, form.Children.Count);
Assert.IsType <PM44Form>(form);
for (int i = 0; i < form.Children.Count; i++)
{
var c = form.Children[i];
Assert.NotNull(c);
Assert.IsType <PM44Chunk>(c);
PM44Chunk chunk = (PM44Chunk)c;
Assert.NotNull(chunk.ChunkData);
if (chunk.ChunkData.Length >= 2)
{
Assert.Equal(i, chunk.ChunkData[0]);
Assert.Equal(slices[i] - (i == 0 ? 0 : slices[i - 1]), chunk.ChunkData[1]);
if (i == 0)
{
Assert.Equal(1, chunk.ChunkData[2]);
Assert.Equal(2, chunk.ChunkData[3]);
int widthTest = chunk.ChunkData[4] << 8;
widthTest |= chunk.ChunkData[5];
Assert.Equal(bmp.Width, widthTest);
int heightTest = chunk.ChunkData[6] << 8;
heightTest |= chunk.ChunkData[7];
Assert.Equal(bmp.Height, heightTest);
}
}
}
}
}
}
public void EncodeImageTest003()
{
string file = Path.Combine(Util.ArtifactsPath, "block001C.png");
string outFile = Path.Combine(Util.ArtifactsDataPath, "block001C.png.djvu");
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(file))
{
bmp.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX);
int width = bmp.Width;
int height = bmp.Height;
var pixMap = PixelMapFromBitmap(bmp);
var map = new InterWavePixelMapEncoder();
map._CrCbDelay = 0;
map.InitializeEncoder(pixMap, null, YCrCbMode.Full);
int nchunks = 4;
int[] slices = new int[] { 111, 152, 184, 200 };
InterWaveEncoderSettings[] settings = new InterWaveEncoderSettings[nchunks];
for (int i = 0; i < nchunks; i++)
{
settings[i] = new InterWaveEncoderSettings
{
Slices = slices[i]
};
}
map._dBFrac = 10.0f;
DjvuFormElement form = null;
using (MemoryStream stream = new MemoryStream())
using (IDjvuWriter writer = new DjvuWriter(stream))
form = map.EncodeImage(writer, nchunks, settings);
using (IDjvuWriter writer = new DjvuWriter(outFile))
form.WriteData(writer);
Assert.NotNull(form);
Assert.Equal(nchunks, form.Children.Count);
Assert.IsType <PM44Form>(form);
for (int i = 0; i < form.Children.Count; i++)
{
var c = form.Children[i];
Assert.NotNull(c);
Assert.IsType <PM44Chunk>(c);
PM44Chunk chunk = (PM44Chunk)c;
Assert.NotNull(chunk.ChunkData);
if (chunk.ChunkData.Length >= 2)
{
Assert.Equal(i, chunk.ChunkData[0]);
if (i == 0)
{
Assert.Equal(1, chunk.ChunkData[2]);
Assert.Equal(2, chunk.ChunkData[3]);
int widthTest = chunk.ChunkData[4] << 8;
widthTest |= chunk.ChunkData[5];
Assert.Equal(bmp.Width, widthTest);
int heightTest = chunk.ChunkData[6] << 8;
heightTest |= chunk.ChunkData[7];
Assert.Equal(bmp.Height, heightTest);
}
}
}
//using (DjvuDocument doc = new DjvuDocument(outFile))
//{
// IDjvuPage page = doc.Pages[0];
// IDjvuElement pageForm = page.PageForm;
// Assert.Equal(nchunks, pageForm.Children.Count);
//}
}
}
