public static ETRLEData LoadIndexedImageData(StciData data)
{
UInt32 uiFileSectionSize;
UInt32 fContents = IMAGE_ALLDATA; //IMAGE_ALLIMAGEDATA;
UInt32 numberOfColours = data._Indexed.UiNumberOfColours;
UInt32 numberOfSubImages = data._Indexed.UsNumberOfSubImages;
byte[] imageData = data.imageData;
// Color[] palette = new Color[numberOfColours];
byte[] palette = new byte[numberOfColours * 4];
ETRLEData result = new ETRLEData(palette);
using (BinaryReader dataReader =
new BinaryReader(new MemoryStream(imageData, 0, imageData.Length)))
{
if ((fContents & IMAGE_PALETTE) != 0)
{
// Allocate memory for reading in the palette
uiFileSectionSize = numberOfColours * STCI_PALETTE_ELEMENT_SIZE;
for (Int32 i = 0; i < numberOfColours; i++)
{
palette[i * 4 + 3] = 0;
byte b = dataReader.ReadByte();
palette[i * 4 + 2] = b;
//if (IndexedConverter.GlobalPalette[i * 3 + 2] == 0)
// IndexedConverter.GlobalPalette[i * 3 + 2] = b;
b = dataReader.ReadByte();
palette[i * 4 + 1] = b;
//if (IndexedConverter.GlobalPalette[i * 3 + 1] == 0)
// IndexedConverter.GlobalPalette[i * 3 + 1] = b;
b = dataReader.ReadByte();
palette[i * 4 + 0] = b;
//if (IndexedConverter.GlobalPalette[i * 3 + 0] == 0)
// IndexedConverter.GlobalPalette[i * 3 + 0] = b;
// Color.FromArgb(dataReader.ReadByte(), dataReader.ReadByte(), dataReader.ReadByte());
}
//hImage->fFlags |= IMAGE_PALETTE;
}
if ((fContents & IMAGE_BITMAPDATA) != 0)
{
if ((data.FFlags & STCI_ETRLE_COMPRESSED) != 0)
{
result.Compressed = true;
// load data for the subimage (object) structures
result.usNumberOfObjects = (UInt16)numberOfSubImages;
uiFileSectionSize = numberOfSubImages * STCI_SUBIMAGE_SIZE;
ETRLEObject[] objects = new ETRLEObject[numberOfSubImages];
for (Int32 i = 0; i < numberOfSubImages; i++)
{
objects[i] = new ETRLEObject
(
dataReader.ReadUInt32(),
dataReader.ReadUInt32(),
dataReader.ReadInt16(),
dataReader.ReadInt16(),
dataReader.ReadUInt16(),
dataReader.ReadUInt16()
);
}
result.uiSizePixData = data.UiStoredSize;
result.ETRLEObjects = objects;
// hImage->fFlags |= IMAGE_TRLECOMPRESSED;
}
result.imageData = dataReader.ReadBytes((Int32)data.UiStoredSize);
// hImage->fFlags |= IMAGE_BITMAPDATA;
}
else if ((fContents & IMAGE_APPDATA) != 0) // then there's a point in seeking ahead
{
dataReader.BaseStream.Seek(data.UiStoredSize, SeekOrigin.Current);
}
if ((fContents & IMAGE_APPDATA) != 0 && data.UiAppDataSize > 0)
{
// load application-specific data
result.pAppData = dataReader.ReadBytes((Int32)data.UiAppDataSize);
result.uiAppDataSize = data.UiAppDataSize;
// hImage->fFlags |= IMAGE_APPDATA;
}
else
{
result.pAppData = null;
result.uiAppDataSize = 0;
}
}
result.HeaderData = data;
return(result);
}
static ETRLEData ConvertBitmapToETRLEObjects(List <ExtendedBitmap> bitmaps, bool isTrim)
{
UInt32 dataOffset = 0;
List <ETRLEObject> objects = new List <ETRLEObject>();
ETRLEData etrleData = null;
List <byte> imageData = new List <byte>();
foreach (ExtendedBitmap bitmap in bitmaps)
{
if (isTrim)
{
bitmap.Trim();
}
Int32 paletteLength = bitmap.Bm.Palette.Entries.Length * 4;
Int32 height = bitmap.Bm.Height;
Int32 width = bitmap.Bm.Width;
Int32 remainder = (4 - width % 4) % 4;
byte[] bmFile = new byte[(width + remainder) * height + 1024 + 54];
Bitmap tempBitmap = (Bitmap)bitmap.Bm.Clone();
tempBitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
using (MemoryStream ms = new MemoryStream(bmFile))
{
tempBitmap.Save(ms, ImageFormat.Bmp);
}
byte[] palette = new byte[1024];
Array.Copy(bmFile, 54, palette, 0, paletteLength);
List <byte> rgbPaletteList = new List <byte>();
for (int i = 0; i < 1024; i += 4)
{
rgbPaletteList.Add(palette[i + 2]);
rgbPaletteList.Add(palette[i + 1]);
rgbPaletteList.Add(palette[i]);
}
byte[] rgbPalette = rgbPaletteList.ToArray();
if (etrleData == null)
{
etrleData = new ETRLEData(rgbPalette);
}
byte[] imageFile = new byte[(width + remainder) * height];
Array.Copy(bmFile, 54 + paletteLength, imageFile, 0, imageFile.Length);
short _offsetX = bitmap.OffsetX;
short _offsetY = bitmap.OffsetY;
List <byte> compressedImage = new List <byte>();
byte zeroCount = 0;
byte nonZeroCount = 0;
int rowPosition = 0;
using (BinaryReader br = new BinaryReader(new MemoryStream(imageFile)))
{
List <byte> buffer = new List <byte>();
while (br.BaseStream.Position < br.BaseStream.Length + 1)
{
if (rowPosition != 0 && rowPosition % width == 0)
{
if (zeroCount != 0)
{
compressedImage.Add((byte)(zeroCount + 128));
zeroCount = 0;
}
if (nonZeroCount != 0)
{
compressedImage.Add(nonZeroCount);
compressedImage.AddRange(buffer);
buffer = new List <byte>();
nonZeroCount = 0;
}
compressedImage.Add(0);
br.BaseStream.Position += remainder;
if (br.BaseStream.Position >= br.BaseStream.Length)
{
break;
}
}
if (zeroCount == 127)
{
compressedImage.Add((byte)(zeroCount + 128));
zeroCount = 0;
}
if (nonZeroCount == 127)
{
compressedImage.Add(nonZeroCount);
compressedImage.AddRange(buffer);
buffer = new List <byte>();
nonZeroCount = 0;
}
byte next = br.ReadByte();
if (next == 0)
{
if (zeroCount == 0 && nonZeroCount != 0)
{
compressedImage.Add(nonZeroCount);
compressedImage.AddRange(buffer);
buffer = new List <byte>();
nonZeroCount = 0;
}
zeroCount++;
}
else
{
if (nonZeroCount == 0 && zeroCount != 0)
{
compressedImage.Add((byte)(zeroCount + 128));
zeroCount = 0;
}
buffer.Add(next);
nonZeroCount++;
}
rowPosition++;
}
}
imageData.AddRange(compressedImage);
UInt32 dataLength = (UInt32)compressedImage.Count;
ETRLEObject obj = new ETRLEObject
(dataOffset, dataLength, _offsetX, _offsetY, (UInt16)height, (UInt16)width);
objects.Add(obj);
dataOffset += dataLength;
}
etrleData.imageData = imageData.ToArray();
etrleData.ETRLEObjects = objects.ToArray();
etrleData.usNumberOfObjects = (UInt16)bitmaps.Count;
etrleData.uiSizePixData = (UInt32)imageData.Count;
return(etrleData);
}
static List <ExtendedBitmap> ConvertEtrleDataToBitmaps
(UInt16 startIndex, UInt16 length, ETRLEData data)
{
byte[] palette = data.palette;
List <ExtendedBitmap> bitmaps = new List <ExtendedBitmap>();
for (int objIndex = startIndex; objIndex < startIndex + length; objIndex++)
{
if (objIndex >= data.ETRLEObjects.Length)
{
return(bitmaps);
}
ETRLEObject obj = data.ETRLEObjects[objIndex];
byte[] file = new byte[obj.uiDataLength];
Array.Copy(data.imageData, obj.uiDataOffset, file, 0, obj.uiDataLength);
Int32 remainder = (4 - obj.usWidth % 4) % 4;
List <byte> argbFile = new List <byte>();
using (BinaryReader br = new BinaryReader(new MemoryStream(file)))
{
while (br.BaseStream.Position < br.BaseStream.Length)
{
Int32 firstSectionByte = br.ReadByte();
if (firstSectionByte == 0)
{
for (int i = 0; i < remainder; i++)
{
argbFile.Add(0);
}
}
else if (firstSectionByte > 127)
{
for (int j = 0; j < firstSectionByte - 128; j++)
{
argbFile.Add(0);
}
}
else
{
for (int j = 0; j < firstSectionByte; j++)
{
byte index = br.ReadByte();
argbFile.Add(index);
}
}
}
}
List <byte> bmpFile = new List <byte>();
bmpFile.AddRange(BMP.CreateBmpHeader
(
(UInt32)argbFile.Count,
(UInt32)(obj.usWidth),
(UInt32)obj.usHeight,
(UInt16)8,
(UInt32)palette.Length
));
bmpFile.AddRange(palette);
bmpFile.AddRange(argbFile);
byte[] bFile = bmpFile.ToArray();
using (MemoryStream argbStream = new MemoryStream(bFile))
{
Bitmap bm;
try
{
bm = new Bitmap(argbStream);
}
catch
{
bm = new Bitmap(obj.usWidth, obj.usHeight);
}
bm.RotateFlip(RotateFlipType.RotateNoneFlipY);
ExtendedBitmap exBm = new ExtendedBitmap(bm, obj.sOffsetX, obj.sOffsetY);
if (data.pAppData != null)
{
exBm.ApplicationData = new byte[16];
Array.Copy(data.pAppData, objIndex * 16, exBm.ApplicationData, 0, 16);
}
bitmaps.Add(exBm);
}
}
return(bitmaps);
}