public void showPreview(screenshotItem shot)
{
this.WindowState = FormWindowState.Normal;
MemoryStream previewMem = new MemoryStream(reader.readFile(shot));
Bitmap preview = new Bitmap(previewMem);
previewMem.Close();
previewMem.Dispose();
this.Text = "Previewing \"" + shot.shotTitle + "\"";
pictureBox1.Image = preview;
this.ClientSize = new Size(preview.Width / 2, preview.Height / 2);
}
internal screenshotItem shotReachBeta(BinaryReader br, int fileStart, screenshotItem screenshot)
{
br.BaseStream.Position = fileStart + 4;
int blfLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 4;
int chdrLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 12;
int blfVersion = br.ReadBigInt16();
br.BaseStream.Position += 46; // Move forward 46 bytes to get to the mapID
int mapId = br.ReadBigInt32() + 10000;
br.BaseStream.Position += 12; // Move forward 12 to get to the created time
int shotTime = br.ReadBigInt32();
br.BaseStream.Position += 64; // Move forward 64 bytes to get to the title
string shotTitle = Encoding.BigEndianUnicode.GetString(br.ReadBytes(256)).Trim('\0');
br.BaseStream.Position = fileStart + blfLength + chdrLength + 4;
int scncLength = 0; // The scnc block doesn't exist in Halo: Reach Beta screenshots
br.BaseStream.Position = fileStart + blfLength + chdrLength + scncLength + 12;
int jpegLength = br.ReadBigInt32();
int jpegOffset = (int)br.BaseStream.Position;
screenshot.blfVersion = blfVersion;
screenshot.headerLength = blfLength + chdrLength + scncLength + 16;
screenshot.headerStart = (fileStart - 49152) / 4096;
screenshot.jpegLength = jpegLength;
screenshot.jpegOffset = jpegOffset;
screenshot.mapID = mapId;
screenshot.fileTime = shotTime;
screenshot.shotTitle = shotTitle;
return screenshot;
}
internal screenshotItem shotReach(BinaryReader br, int fileStart, screenshotItem screenshot)
{
int headerStart = (fileStart - 49152) / 4096;
br.BaseStream.Position = fileStart + 4;
int blfLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 4;
int chdrLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 12;
int blfVersion = br.ReadBigInt16();
br.BaseStream.Position += 46; // Move forward 46 bytes to get to the mapID
int mapId = br.ReadBigInt32();
if (screenshot.gameID == 4 && mapId == 10080)
mapId += 1; // This is done to prevent a discrepancy with Halo: Reach's "Installation 04"
br.BaseStream.Position += 12; // Move forward 12 bytes to get to the created timestamp
int createTime = br.ReadBigInt32();
br.BaseStream.Position += 32;
int modTime = br.ReadBigInt32();
br.BaseStream.Position += 28; // Move forward 28 bytes to get to the title
string shotTitle = Encoding.BigEndianUnicode.GetString(br.ReadBytes(256)).Trim('\0');
br.BaseStream.Position = fileStart + blfLength + chdrLength + 4;
int scncLength = br.ReadBigInt32();
br.BaseStream.Position = screenshot.hashTable + ((headerStart * 24) + 21); // Since the header in Reach Retail screenshot files spans more than one block, we need to find out where to go next from the hash table
int nextBlock = (br.ReadBigInt24() * 4096) + 49152;
int bytesRemain = (blfLength + chdrLength + scncLength) - 4096;
br.BaseStream.Position = nextBlock + bytesRemain + 12;
int jpegLength = br.ReadBigInt32();
int jpegOffset = (int)br.BaseStream.Position;
screenshot.blfVersion = blfVersion;
screenshot.headerLength = blfLength + chdrLength + scncLength + 16;
screenshot.headerStart = headerStart;
screenshot.jpegLength = jpegLength;
screenshot.jpegOffset = jpegOffset;
screenshot.mapID = mapId;
screenshot.fileTime = createTime;
screenshot.shotTitle = shotTitle;
return screenshot;
}
internal screenshotItem shotHalo3ODST(BinaryReader br, int fileStart, screenshotItem screenshot)
{
br.BaseStream.Position = fileStart + 4;
int blfLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 4;
int chdrLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + 12;
int blfVersion = br.ReadBigInt16();
br.BaseStream.Position += 10; // Move forward 10 bytes to get to the start of the title
string shotTitle = Encoding.BigEndianUnicode.GetString(br.ReadBytes(32)).Trim('\0');
br.BaseStream.Position += 172; // Move forward 172 bytes to get to the shot time
int shotTime = br.ReadBigInt32();
br.BaseStream.Position += 8;
int mapId = br.ReadBigInt32();
br.BaseStream.Position += 8;
byte fireFight = br.ReadByte();
if (fireFight != 0)
mapId += 10000 + fireFight;
br.BaseStream.Position = fileStart + blfLength + chdrLength + 4;
int scncLength = 0; // The scnc block doesn't exist in versions prior to 12070, so we'll check for that
if (blfVersion >= 12070)
scncLength = br.ReadBigInt32();
br.BaseStream.Position = fileStart + blfLength + chdrLength + scncLength + 12;
int jpegLength = br.ReadBigInt32();
int jpegOffset = (int)br.BaseStream.Position;
screenshot.blfVersion = blfVersion;
screenshot.headerLength = blfLength + chdrLength + scncLength + 16;
screenshot.headerStart = (fileStart - 49152) / 4096;
screenshot.jpegLength = jpegLength;
screenshot.jpegOffset = jpegOffset;
screenshot.fileTime = shotTime;
screenshot.mapID = mapId;
screenshot.shotTitle = shotTitle;
return screenshot;
}
public byte[] readFile(screenshotItem shot)
{
#if DEBUG
FileStream debug = new FileStream(shot.fileName + "_debug.txt", FileMode.Create, FileAccess.ReadWrite);
StreamWriter sw = new StreamWriter(debug);
sw.WriteLine("Total Filesize: " + shot.jpegLength + ", numBlocks: " + shot.numBlocks + " hashBlock: 0x" + shot.hashTable.ToString("X"));
sw.Flush();
#endif
FileStream fs = new FileStream(shot.fileName, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
byte[] file = new byte[shot.jpegLength];
int count = 0;
int copyTo = 0;
int thisBlock = shot.headerStart;
int headerLength = shot.headerLength;
int numBlocks = shot.numBlocks;
short blockRemain = (short)((numBlocks * 4096) - shot.jpegLength - headerLength);
if (blockRemain > 4096)
{
#if DEBUG
sw.WriteLine("// Block Remainder: ((" + shot.numBlocks + " * 4096) - " + shot.jpegLength + " - " + shot.headerLength + ") = " + blockRemain + " //");
sw.WriteLine("// Block remainder is greater than 4096, ignoring last block //");
#endif
numBlocks--;
}
while (headerLength >= 4096) // This should only happen in Reach Retail files, because of the extra length of the SCNC block
{
numBlocks--;
headerLength -= 4096;
br.BaseStream.Position = shot.hashTable + ((thisBlock * 24) + 21);
thisBlock = br.ReadBigInt24();
}
#if DEBUG
sw.WriteLine();
sw.Flush();
#endif
while (count < numBlocks)
{
br.BaseStream.Position = (thisBlock * 4096) + 49152;
byte[] buffer;
int readBytes = 4096;
if (count == 0)
{
br.BaseStream.Position += headerLength;
readBytes -= headerLength;
}
else if (count == (numBlocks - 1))
{
readBytes -= (numBlocks * 4096) - headerLength - shot.jpegLength;
}
#if DEBUG
sw.WriteLine("count: " + count.ToString().PadLeft(shot.numBlocks.ToString().Length, ' ') +
", thisBlock: " + thisBlock.ToString().PadLeft(shot.numBlocks.ToString().Length, ' ') +
", hashTable: " + (int)(shot.hashTable + ((thisBlock * 24) + 21)) +
", reading " + readBytes.ToString().PadLeft(4, ' ') + " bytes from " +
br.BaseStream.Position.ToString().PadLeft(shot.jpegLength.ToString().Length, ' ') +
" and copying to " + copyTo.ToString().PadLeft(shot.jpegLength.ToString().Length, ' '));
sw.Flush();
#endif
buffer = br.ReadBytes(readBytes);
br.BaseStream.Position = shot.hashTable + ((thisBlock * 24) + 21);
thisBlock = br.ReadBigInt24();
count++;
try
{
buffer.CopyTo(file, copyTo);
}
catch (Exception e)
{
#if DEBUG
sw.WriteLine();
sw.WriteLine("// Error occured at count " + count + ": " + e.Message + "//");
sw.WriteLine();
sw.Flush();
#endif
}
copyTo += readBytes;
}
br.Close();
fs.Close();
#if DEBUG
sw.Close();
debug.Close();
#endif
return file;
}
