public CV2Reader(Stream input)
{
if (input.Length < 17)
{
throw new IOException("ファイルが小さすぎます");
}
_header = CV2Header.Deserialize(input);
if (_header.Height * _header.PaddedWidth * _header.Bpp > input.Length - 17)
{
throw new IOException("ファイルが小さすぎます");
}
input.Seek(17, SeekOrigin.Begin);
_image = new Bitmap(_header.Width, _header.Height, _header.PixelFormat);
int lineSize = _header.Width * _header.Bpp;
byte[] lineBuf = new byte[_header.PaddedWidth * _header.Bpp];
for (int y = 0; y < _header.Height; ++y)
{
input.Read(lineBuf, 0, lineBuf.Length);
BitmapData data = _image.LockBits(
new Rectangle(0, y, _header.Width, 1),
ImageLockMode.WriteOnly, _header.PixelFormat);
Marshal.Copy(lineBuf, 0, data.Scan0, lineSize);
_image.UnlockBits(data);
}
}
public static CV2Header Deserialize(Stream input)
{
CV2Header header = new CV2Header();
Binary reader = new Binary(input);
header.bpp = reader.ReadByte();
header.Width = reader.ReadInt32();
header.Height = reader.ReadInt32();
header.PaddedWidth = reader.ReadInt32();
int resd1 = reader.ReadInt32();
if (header.PaddedWidth < header.Width)
{
throw new FormatException("ヘッダーが不正です。");
}
return(header);
}
public CV2Reader(Stream input)
{
if (input.Length < 17)
throw new IOException("ファイルが小さすぎます");
_header = CV2Header.Deserialize(input);
if (_header.Height * _header.PaddedWidth * _header.Bpp > input.Length - 17)
throw new IOException("ファイルが小さすぎます");
input.Seek(17, SeekOrigin.Begin);
_image = new Bitmap(_header.Width, _header.Height, _header.PixelFormat);
int lineSize = _header.Width * _header.Bpp;
byte[] lineBuf = new byte[_header.PaddedWidth * _header.Bpp];
for (int y = 0; y < _header.Height; ++y)
{
input.Read(lineBuf, 0, lineBuf.Length);
BitmapData data = _image.LockBits(
new Rectangle(0, y, _header.Width, 1),
ImageLockMode.WriteOnly, _header.PixelFormat);
Marshal.Copy(lineBuf, 0, data.Scan0, lineSize);
_image.UnlockBits(data);
}
}
public static CV2Header Deserialize(Stream input)
{
CV2Header header = new CV2Header();
Binary reader = new Binary(input);
header.bpp = reader.ReadByte();
header.Width = reader.ReadInt32();
header.Height = reader.ReadInt32();
header.PaddedWidth = reader.ReadInt32();
int resd1 = reader.ReadInt32();
if (header.PaddedWidth < header.Width)
throw new FormatException("ヘッダーが不正です。");
return header;
}
