private void OpenFile(string filename)
{
_filename = filename;
// The using statements ensure fileIn is closed, no matter how the statement is exited.
// Open the file in read-only mode, but allow read-write sharing. This prevents a case where opening
// the file read-only with read sharing could fail because some other application already has it
// open with read-write access even though it's not writing to the file. (I suspect some antivirus
// programs may be doing this) Using this mode may allow reading half-written files, but I don't expect
// that will be an issue with PES designs, since they're generally written once when downloaded and left
// alone after that.
using (FileStream fileStreamIn = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (BinaryReader fileIn = new BinaryReader(fileStreamIn))
{
string startFileSig = "";
for (int i = 0; i < 4; i++) // 4 bytes
{
// This needs to be read as a byte, since characters can be multiple bytes depending on encoding
startFileSig += (char)fileIn.ReadByte();
}
if (startFileSig != "#PES")
{
// This is not a file that we can read
throw new PECFormatException("Missing #PES at beginning of file");
}
// PES version
string versionString = "";
for (int i = 0; i < 4; i++) // 4 bytes
{
// This needs to be read as a byte, since characters can be multiple bytes depending on encoding
versionString += (char)fileIn.ReadByte();
}
if (!UInt16.TryParse(versionString, out pesVersion))
{
// This is not a file that we can read
throw new PECFormatException("PES version is not the correct format");
}
int pecstart = fileIn.ReadInt32();
// Sanity check on PEC start position
if (fileIn.BaseStream.Length < (pecstart + 532))
{
// This file is probably truncated
throw new PECFormatException("File appears to be truncated (PEC section is beyond end of file)");
}
// Read number of colors in this design
fileIn.BaseStream.Position = pecstart + 48;
int numColors = fileIn.ReadByte() + 1;
List<byte> colorList = new List<byte>();
for (int x = 0; x < numColors; x++)
{
colorList.Add(fileIn.ReadByte());
}
// Read stitch data
fileIn.BaseStream.Position = pecstart + 532;
bool thisPartIsDone = false;
StitchBlock curBlock;
int prevX = 0;
int prevY = 0;
int maxX = 0;
int minX = 0;
int maxY = 0;
int minY = 0;
int colorNum = -1;
int colorIndex = 0;
List<Stitch> tempStitches = new List<Stitch>();
Stitch prevStitch = null;
bool firstStitchOfBlock = true;
while (!thisPartIsDone)
{
byte val1;
byte val2;
val1 = fileIn.ReadByte();
val2 = fileIn.ReadByte();
if (val1 == 0xff && val2 == 0x00)
{
//end of stitches
thisPartIsDone = true;
//add the last block
curBlock = new StitchBlock();
curBlock.stitches = new Stitch[tempStitches.Count];
tempStitches.CopyTo(curBlock.stitches);
curBlock.stitchesTotal = tempStitches.Count;
colorNum++;
colorIndex = colorList[colorNum];
curBlock.colorIndex = colorIndex;
curBlock.color = getColorFromIndex(colorIndex);
blocks.Add(curBlock);
}
else if (val1 == 0xfe && val2 == 0xb0)
{
//color switch, start a new block
curBlock = new StitchBlock();
curBlock.stitches = new Stitch[tempStitches.Count];
tempStitches.CopyTo(curBlock.stitches);
curBlock.stitchesTotal = tempStitches.Count;
colorNum++;
colorIndex = colorList[colorNum];
curBlock.colorIndex = colorIndex;
curBlock.color = getColorFromIndex(colorIndex);
//read useless(?) byte
// The value of this 'useless' byte seems to start with 2 for the first block and
// alternate between 2 and 1 for every other block after that. The only exception
// I've noted is the last block which appears to always be 0.
curBlock.unknownStartByte = fileIn.ReadByte();
blocks.Add(curBlock);
firstStitchOfBlock = true;
tempStitches = new List<Stitch>();
}
else
{
int deltaX = 0;
int deltaY = 0;
int extraBits1 = 0x00;
Stitch.MoveBitSize xMoveBits;
Stitch.MoveBitSize yMoveBits;
if ((val1 & 0x80) == 0x80)
{
// Save the top 4 bits to output with debug info
// The top bit means this is a 12 bit value, but I don't know what the next 3 bits mean.
// The only combinations I've observed in real files are 0x10 and 0x20. 0x20 occurs
// about 4 times as much as 0x10 in the samples I have available.
extraBits1 = val1 & 0x70;
// This is a 12-bit int. Allows for needle movement
// of up to +2047 or -2048.
deltaX = get12Bit2sComplement(val1, val2);
xMoveBits = Stitch.MoveBitSize.TwelveBits;
// The X value used both bytes, so read next byte
// for Y value.
val1 = fileIn.ReadByte();
}
else
{
// This is a 7-bit int. Allows for needle movement
// of up to +63 or -64.
deltaX = get7Bit2sComplement(val1);
xMoveBits = Stitch.MoveBitSize.SevenBits;
// The X value only used 1 byte, so copy the second
// to to the first for Y value.
val1 = val2;
}
int extraBits2 = 0x00;
if ((val1 & 0x80) == 0x80)
{
// Save the top 4 bits to output with debug info
// The top bit means this is a 12 bit value, but I don't know what the next 3 bits mean.
// In all the files I've checked, extraBits2 is the same as extraBits1.
extraBits2 = val1 & 0x70;
// This is a 12-bit int. Allows for needle movement
// of up to +2047 or -2048.
// Read in the next byte to get the full value
val2 = fileIn.ReadByte();
deltaY = get12Bit2sComplement(val1, val2);
yMoveBits = Stitch.MoveBitSize.TwelveBits;
}
else
{
// This is a 7-bit int. Allows for needle movement
// of up to +63 or -64.
deltaY = get7Bit2sComplement(val1);
yMoveBits = Stitch.MoveBitSize.SevenBits;
// Finished reading data for this stitch, no more
// bytes needed.
}
Stitch.StitchType stitchType;
if (deltaX == 0 && deltaY == 0)
{
// A stitch with zero movement seems to indicate the current and next stitches are movement only.
// Almost always occurs at the end of a block.
stitchType = Stitch.StitchType.MovementBeginAnchor;
}
else if (extraBits1 == 0x20 && extraBits2 == 0x20)
{
// A stitch with extrabits 0x20 seems to indicate the current and next stitches are movement only.
// Almost always occurs within a block, not the beginning or end.
stitchType = Stitch.StitchType.MovementOnly;
}
else if (extraBits1 == 0x10 && extraBits2 == 0x10)
{
// A stitch with extrabits 0x10 seems to indicate the current stitch is movement only.
// Almost always occurs at the beginning of a block.
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else if (prevStitch != null &&
(prevStitch.stitchType == Stitch.StitchType.MovementOnly ||
prevStitch.stitchType == Stitch.StitchType.MovementBeginAnchor))
{
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else
{
if (firstStitchOfBlock)
{
// First stitch of block is usually a movement to position the needle in the block
firstStitchOfBlock = false;
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else
{
// Assume everything else is a normal stitch
stitchType = Stitch.StitchType.NormalStitch;
}
}
// Add stitch to list
prevStitch = new Stitch(
new Point(prevX, prevY),
new Point(prevX + deltaX, prevY + deltaY),
extraBits1,
extraBits2,
xMoveBits,
yMoveBits,
stitchType
);
tempStitches.Add(prevStitch);
// Calculate new "previous" position
prevX = prevX + deltaX;
prevY = prevY + deltaY;
// Update maximum distances
if (prevX > maxX)
{
maxX = prevX;
}
else if (prevX < minX)
{
minX = prevX;
}
if (prevY > maxY)
{
maxY = prevY;
}
else if (prevY < minY)
{
minY = prevY;
}
}
}
imageWidth = maxX - minX;
imageHeight = maxY - minY;
translateStart.X = -minX;
translateStart.Y = -minY;
}
}
}
private void OpenFile(string filename)
{
_filename = filename;
// The using statements ensure fileIn is closed, no matter how the statement is exited.
// Open the file in read-only mode, but allow read-write sharing. This prevents a case where opening
// the file read-only with read sharing could fail because some other application already has it
// open with read-write access even though it's not writing to the file. (I suspect some antivirus
// programs may be doing this) Using this mode may allow reading half-written files, but I don't expect
// that will be an issue with PES designs, since they're generally written once when downloaded and left
// alone after that.
using (FileStream fileStreamIn = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (BinaryReader fileIn = new BinaryReader(fileStreamIn))
{
string startFileSig = "";
for (int i = 0; i < 4; i++) // 4 bytes
{
// This needs to be read as a byte, since characters can be multiple bytes depending on encoding
startFileSig += (char)fileIn.ReadByte();
}
if (startFileSig != "#PES")
{
// This is not a file that we can read
throw new PECFormatException("Missing #PES at beginning of file");
}
// PES version
string versionString = "";
for (int i = 0; i < 4; i++) // 4 bytes
{
// This needs to be read as a byte, since characters can be multiple bytes depending on encoding
versionString += (char)fileIn.ReadByte();
}
if (!UInt16.TryParse(versionString, out pesVersion))
{
// This is not a file that we can read
throw new PECFormatException("PES version is not the correct format");
}
int pecstart = fileIn.ReadInt32();
// Sanity check on PEC start position
if (fileIn.BaseStream.Length < (pecstart + 532))
{
// This file is probably truncated
throw new PECFormatException("File appears to be truncated (PEC section is beyond end of file)");
}
// Read number of colors in this design
fileIn.BaseStream.Position = pecstart + 48;
int numColors = fileIn.ReadByte() + 1;
List <byte> colorList = new List <byte>();
for (int x = 0; x < numColors; x++)
{
colorList.Add(fileIn.ReadByte());
}
// Read stitch data
fileIn.BaseStream.Position = pecstart + 532;
bool thisPartIsDone = false;
StitchBlock curBlock;
int prevX = 0;
int prevY = 0;
int maxX = 0;
int minX = 0;
int maxY = 0;
int minY = 0;
int colorNum = -1;
int colorIndex = 0;
List <Stitch> tempStitches = new List <Stitch>();
Stitch prevStitch = null;
bool firstStitchOfBlock = true;
while (!thisPartIsDone)
{
byte val1;
byte val2;
val1 = fileIn.ReadByte();
val2 = fileIn.ReadByte();
if (val1 == 0xff && val2 == 0x00)
{
//end of stitches
thisPartIsDone = true;
//add the last block
curBlock = new StitchBlock();
curBlock.stitches = new Stitch[tempStitches.Count];
tempStitches.CopyTo(curBlock.stitches);
curBlock.stitchesTotal = tempStitches.Count;
colorNum++;
colorIndex = colorList[colorNum];
curBlock.colorIndex = colorIndex;
curBlock.color = getColorFromIndex(colorIndex);
blocks.Add(curBlock);
}
else if (val1 == 0xfe && val2 == 0xb0)
{
//color switch, start a new block
curBlock = new StitchBlock();
curBlock.stitches = new Stitch[tempStitches.Count];
tempStitches.CopyTo(curBlock.stitches);
curBlock.stitchesTotal = tempStitches.Count;
colorNum++;
colorIndex = colorList[colorNum];
curBlock.colorIndex = colorIndex;
curBlock.color = getColorFromIndex(colorIndex);
//read useless(?) byte
// The value of this 'useless' byte seems to start with 2 for the first block and
// alternate between 2 and 1 for every other block after that. The only exception
// I've noted is the last block which appears to always be 0.
curBlock.unknownStartByte = fileIn.ReadByte();
blocks.Add(curBlock);
firstStitchOfBlock = true;
tempStitches = new List <Stitch>();
}
else
{
int deltaX = 0;
int deltaY = 0;
int extraBits1 = 0x00;
Stitch.MoveBitSize xMoveBits;
Stitch.MoveBitSize yMoveBits;
if ((val1 & 0x80) == 0x80)
{
// Save the top 4 bits to output with debug info
// The top bit means this is a 12 bit value, but I don't know what the next 3 bits mean.
// The only combinations I've observed in real files are 0x10 and 0x20. 0x20 occurs
// about 4 times as much as 0x10 in the samples I have available.
extraBits1 = val1 & 0x70;
// This is a 12-bit int. Allows for needle movement
// of up to +2047 or -2048.
deltaX = get12Bit2sComplement(val1, val2);
xMoveBits = Stitch.MoveBitSize.TwelveBits;
// The X value used both bytes, so read next byte
// for Y value.
val1 = fileIn.ReadByte();
}
else
{
// This is a 7-bit int. Allows for needle movement
// of up to +63 or -64.
deltaX = get7Bit2sComplement(val1);
xMoveBits = Stitch.MoveBitSize.SevenBits;
// The X value only used 1 byte, so copy the second
// to to the first for Y value.
val1 = val2;
}
int extraBits2 = 0x00;
if ((val1 & 0x80) == 0x80)
{
// Save the top 4 bits to output with debug info
// The top bit means this is a 12 bit value, but I don't know what the next 3 bits mean.
// In all the files I've checked, extraBits2 is the same as extraBits1.
extraBits2 = val1 & 0x70;
// This is a 12-bit int. Allows for needle movement
// of up to +2047 or -2048.
// Read in the next byte to get the full value
val2 = fileIn.ReadByte();
deltaY = get12Bit2sComplement(val1, val2);
yMoveBits = Stitch.MoveBitSize.TwelveBits;
}
else
{
// This is a 7-bit int. Allows for needle movement
// of up to +63 or -64.
deltaY = get7Bit2sComplement(val1);
yMoveBits = Stitch.MoveBitSize.SevenBits;
// Finished reading data for this stitch, no more
// bytes needed.
}
Stitch.StitchType stitchType;
if (deltaX == 0 && deltaY == 0)
{
// A stitch with zero movement seems to indicate the current and next stitches are movement only.
// Almost always occurs at the end of a block.
stitchType = Stitch.StitchType.MovementBeginAnchor;
}
else if (extraBits1 == 0x20 && extraBits2 == 0x20)
{
// A stitch with extrabits 0x20 seems to indicate the current and next stitches are movement only.
// Almost always occurs within a block, not the beginning or end.
stitchType = Stitch.StitchType.MovementOnly;
}
else if (extraBits1 == 0x10 && extraBits2 == 0x10)
{
// A stitch with extrabits 0x10 seems to indicate the current stitch is movement only.
// Almost always occurs at the beginning of a block.
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else if (prevStitch != null &&
(prevStitch.stitchType == Stitch.StitchType.MovementOnly ||
prevStitch.stitchType == Stitch.StitchType.MovementBeginAnchor))
{
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else
{
if (firstStitchOfBlock)
{
// First stitch of block is usually a movement to position the needle in the block
firstStitchOfBlock = false;
stitchType = Stitch.StitchType.MovementEndAnchor;
}
else
{
// Assume everything else is a normal stitch
stitchType = Stitch.StitchType.NormalStitch;
}
}
// Add stitch to list
prevStitch = new Stitch(
new Point(prevX, prevY),
new Point(prevX + deltaX, prevY + deltaY),
extraBits1,
extraBits2,
xMoveBits,
yMoveBits,
stitchType
);
tempStitches.Add(prevStitch);
// Calculate new "previous" position
prevX = prevX + deltaX;
prevY = prevY + deltaY;
// Update maximum distances
if (prevX > maxX)
{
maxX = prevX;
}
else if (prevX < minX)
{
minX = prevX;
}
if (prevY > maxY)
{
maxY = prevY;
}
else if (prevY < minY)
{
minY = prevY;
}
}
}
imageWidth = maxX - minX;
imageHeight = maxY - minY;
translateStart.X = -minX;
translateStart.Y = -minY;
}
}
}