public void Read(EXRFile file, IEXRReader reader)
{
while (EXRAttribute.Read(file, reader, out EXRAttribute attribute))
{
Attributes[attribute.Name] = attribute;
}
}
protected void ReadPixelData(IEXRReader reader)
{
var linesPerBlock = EXRFile.GetScanLinesPerBlock(Header.Compression);
var sortedChannels = (from c in Header.Channels orderby c.Name select c).ToList();
//var actions = (from offset in Offsets select (Action)(() => {
//}));
//Parallel.Invoke(actions.ToArray());
foreach (var offset in Offsets)
{
ReadPixelBlock(reader, offset, linesPerBlock, sortedChannels);
}
}
private void ReadPixelDataParallel(ParallelReaderCreationDelegate createReader)
{
var linesPerBlock = EXRFile.GetScanLinesPerBlock(Header.Compression);
var sortedChannels = (from c in Header.Channels orderby c.Name select c).ToList();
var actions = (from offset in Offsets select(Action)(() => {
var reader = createReader();
ReadPixelBlock(reader, offset, linesPerBlock, sortedChannels);
reader.Dispose();
}));
Parallel.Invoke(actions.ToArray());
}
public static EXRFile FromReader(IEXRReader reader)
{
var img = new EXRFile();
img.Read(reader);
img.Parts = new List <EXRPart>();
for (int i = 0; i < img.Headers.Count; i++)
{
var part = new EXRPart(img.Version, img.Headers[i], img.OffsetTables[i]);
img.Parts.Add(part);
//part.ReadPixelData(reader);
}
return(img);
}
public float[] GetFloats(ImageSourceFormat srcFormat, ChannelConfiguration channels, bool premultiplied, GammaEncoding gamma)
{
ImageDestFormat destFormat;
if (srcFormat == ImageSourceFormat.HalfRGBA || srcFormat == ImageSourceFormat.SingleRGBA)
{
if (premultiplied)
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.PremultipliedBGRA32 :
ImageDestFormat.PremultipliedRGBA32;
}
else
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.BGRA32 :
ImageDestFormat.RGBA32;
}
}
else
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.BGR32 :
ImageDestFormat.RGB32;
}
var bytesPerPixel = EXRFile.GetBytesPerPixel(destFormat);
var channelCount =
srcFormat == ImageSourceFormat.SingleRGB || srcFormat == ImageSourceFormat.HalfRGB ? 3 : 4;
var bytes = GetBytes(srcFormat, destFormat, gamma, DataWindow.Width * bytesPerPixel);
float[] floats = new float[bytes.Length / sizeof(float)];
Buffer.BlockCopy(bytes, 0, floats, 0, bytes.Length);
return(floats);
}
public Half[] GetHalfs(ImageSourceFormat srcFormat, ChannelConfiguration channels, bool premultiplied, GammaEncoding gamma)
{
ImageDestFormat destFormat;
if (srcFormat == ImageSourceFormat.HalfRGBA || srcFormat == ImageSourceFormat.SingleRGBA)
{
if (premultiplied)
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.PremultipliedBGRA16 :
ImageDestFormat.PremultipliedRGBA16;
}
else
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.BGRA16 :
ImageDestFormat.RGBA16;
}
}
else
{
destFormat =
channels == ChannelConfiguration.BGR ?
ImageDestFormat.BGR16 :
ImageDestFormat.RGB16;
}
var bytesPerPixel = EXRFile.GetBytesPerPixel(destFormat);
var channelCount =
srcFormat == ImageSourceFormat.SingleRGB || srcFormat == ImageSourceFormat.HalfRGB ? 3 : 4;
var bytes = GetBytes(srcFormat, destFormat, gamma, DataWindow.Width * bytesPerPixel);
Half[] halfs = new Half[bytes.Length / 2];
Buffer.BlockCopy(bytes, 0, halfs, 0, bytes.Length);
return(halfs);
}
private bool ReadChannel(EXRFile file, IEXRReader reader, out Channel channel, out int bytesRead)
{
var start = reader.Position;
var name = reader.ReadNullTerminatedString(255);
if (name == "")
{
channel = null;
bytesRead = reader.Position - start;
return(false);
}
channel = new Channel(
name,
(PixelType)reader.ReadInt32(),
reader.ReadByte() != 0,
reader.ReadByte(), reader.ReadByte(), reader.ReadByte(),
reader.ReadInt32(), reader.ReadInt32());
bytesRead = reader.Position - start;
return(true);
}
public void Read(EXRFile file, IEXRReader reader, int size)
{
var totalSize = 0;
Channel channel;
int bytesRead;
while (ReadChannel(file, reader, out channel, out bytesRead))
{
Channels.Add(channel);
totalSize += bytesRead;
if (totalSize > size)
{
throw new EXRFormatException("Read " + totalSize + " bytes but Size was " + size + ".");
}
}
totalSize += bytesRead;
if (totalSize != size)
{
throw new EXRFormatException("Read " + totalSize + " bytes but Size was " + size + ".");
}
}
/// <summary>
/// Returns true unless this is the end of the header
/// </summary>
public bool Read(EXRFile file, IEXRReader reader)
{
var maxLen = file.Version.MaxNameLength;
try
{
Name = reader.ReadNullTerminatedString(maxLen);
}
catch (Exception e)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute name: " + e.Message, e);
}
if (Name == "")
{
return(false);
}
try
{
Type = reader.ReadNullTerminatedString(maxLen);
}
catch (Exception e)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute type for '" + Name + "': " + e.Message, e);
}
if (Type == "")
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute type for '" + Name + "': Cannot be an empty string.");
}
Size = reader.ReadInt32();
switch (Type)
{
case "box2i":
if (Size != 16)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type box2i: Size must be 16 bytes, was " + Size + ".");
}
Value = new Box2I(reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32());
break;
case "box2f":
if (Size != 16)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type box2f: Size must be 16 bytes, was " + Size + ".");
}
Value = new Box2F(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
break;
case "chromaticities":
if (Size != 32)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type chromaticities: Size must be 32 bytes, was " + Size + ".");
}
Value = new Chromaticities(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
break;
case "compression":
if (Size != 1)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type compression: Size must be 1 byte, was " + Size + ".");
}
Value = (EXRCompression)reader.ReadByte();
break;
case "double":
if (Size != 8)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type double: Size must be 8 bytes, was " + Size + ".");
}
Value = reader.ReadDouble();
break;
case "envmap":
if (Size != 1)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type envmap: Size must be 1 byte, was " + Size + ".");
}
Value = (EnvMap)reader.ReadByte();
break;
case "float":
if (Size != 4)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type float: Size must be 4 bytes, was " + Size + ".");
}
Value = reader.ReadSingle();
break;
case "int":
if (Size != 4)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type int: Size must be 4 bytes, was " + Size + ".");
}
Value = reader.ReadInt32();
break;
case "keycode":
if (Size != 28)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type keycode: Size must be 28 bytes, was " + Size + ".");
}
Value = new KeyCode(reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32());
break;
case "lineOrder":
if (Size != 1)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type lineOrder: Size must be 1 byte, was " + Size + ".");
}
Value = (LineOrder)reader.ReadByte();
break;
case "m33f":
if (Size != 36)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type m33f: Size must be 36 bytes, was " + Size + ".");
}
Value = new M33F(
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(),
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(),
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
break;
case "m44f":
if (Size != 64)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type m44f: Size must be 64 bytes, was " + Size + ".");
}
Value = new M44F(
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(),
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(),
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(),
reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
break;
case "rational":
if (Size != 8)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type rational: Size must be 8 bytes, was " + Size + ".");
}
Value = new Rational(reader.ReadInt32(), reader.ReadUInt32());
break;
case "string":
if (Size < 0)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type string: Invalid Size, was " + Size + ".");
}
Value = reader.ReadString(Size);
break;
case "stringvector":
if (Size == 0)
{
Value = new List <string>();
}
else if (Size < 4)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type stringvector: Size must be at least 4 bytes or 0 bytes, was " + Size + ".");
}
else
{
var strings = new List <string>();
Value = strings;
var bytesRead = 0;
while (bytesRead < Size)
{
var loc = reader.Position;
var str = reader.ReadString();
strings.Add(str);
bytesRead += reader.Position - loc;
}
if (bytesRead != Size)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type stringvector: Read " + bytesRead + " bytes but Size was " + Size + ".");
}
}
break;
case "tiledesc":
if (Size != 9)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type tiledesc: Size must be 9 bytes, was " + Size + ".");
}
Value = new TileDesc(reader.ReadUInt32(), reader.ReadUInt32(), reader.ReadByte());
break;
case "timecode":
if (Size != 8)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type timecode: Size must be 8 bytes, was " + Size + ".");
}
Value = new TimeCode(reader.ReadUInt32(), reader.ReadUInt32());
break;
case "v2i":
if (Size != 8)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type v2i: Size must be 8 bytes, was " + Size + ".");
}
Value = new V2I(reader.ReadInt32(), reader.ReadInt32());
break;
case "v2f":
if (Size != 8)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type v2f: Size must be 8 bytes, was " + Size + ".");
}
Value = new V2F(reader.ReadSingle(), reader.ReadSingle());
break;
case "v3i":
if (Size != 12)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type v3i: Size must be 12 bytes, was " + Size + ".");
}
Value = new V3I(reader.ReadInt32(), reader.ReadInt32(), reader.ReadInt32());
break;
case "v3f":
if (Size != 12)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type v3f: Size must be 12 bytes, was " + Size + ".");
}
Value = new V3F(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
break;
case "chlist":
var chlist = new ChannelList();
try
{
chlist.Read(file, reader, Size);
}
catch (Exception e)
{
throw new EXRFormatException("Invalid or corrupt EXR header attribute '" + Name + "' of type chlist: " + e.Message, e);
}
Value = chlist;
break;
case "preview":
default:
Value = reader.ReadBytes(Size);
break;
}
return(true);
}
public static bool Read(EXRFile file, IEXRReader reader, out EXRAttribute attribute)
{
attribute = new EXRAttribute();
return(attribute.Read(file, reader));
}
public byte[] GetBytes(ImageSourceFormat srcFormat, ImageDestFormat destFormat, GammaEncoding gamma, int stride)
{
CheckHasData();
int bytesPerPixel = EXRFile.GetBytesPerPixel(destFormat);
int bitsPerPixel = EXRFile.GetBitsPerPixel(destFormat);
if (stride < bytesPerPixel * DataWindow.Width)
{
throw new ArgumentException("Stride was lower than minimum", "stride");
}
byte[] buffer = new byte[stride * DataWindow.Height];
var padding = stride - bytesPerPixel * DataWindow.Width;
bool isHalf = srcFormat == ImageSourceFormat.HalfRGB || srcFormat == ImageSourceFormat.HalfRGBA;
bool sourceAlpha = false;
bool destinationAlpha =
destFormat == ImageDestFormat.BGRA16 ||
destFormat == ImageDestFormat.BGRA32 ||
destFormat == ImageDestFormat.BGRA8 ||
destFormat == ImageDestFormat.PremultipliedBGRA16 ||
destFormat == ImageDestFormat.PremultipliedBGRA32 ||
destFormat == ImageDestFormat.PremultipliedBGRA8 ||
destFormat == ImageDestFormat.PremultipliedRGBA16 ||
destFormat == ImageDestFormat.PremultipliedRGBA32 ||
destFormat == ImageDestFormat.PremultipliedRGBA8 ||
destFormat == ImageDestFormat.RGBA16 ||
destFormat == ImageDestFormat.RGBA32 ||
destFormat == ImageDestFormat.RGBA8;
bool premultiplied =
destFormat == ImageDestFormat.PremultipliedBGRA16 ||
destFormat == ImageDestFormat.PremultipliedBGRA32 ||
destFormat == ImageDestFormat.PremultipliedBGRA8 ||
destFormat == ImageDestFormat.PremultipliedRGBA16 ||
destFormat == ImageDestFormat.PremultipliedRGBA32 ||
destFormat == ImageDestFormat.PremultipliedRGBA8;
bool bgra =
destFormat == ImageDestFormat.BGR16 ||
destFormat == ImageDestFormat.BGR32 ||
destFormat == ImageDestFormat.BGR8 ||
destFormat == ImageDestFormat.BGRA16 ||
destFormat == ImageDestFormat.BGRA32 ||
destFormat == ImageDestFormat.BGRA8 ||
destFormat == ImageDestFormat.PremultipliedBGRA16 ||
destFormat == ImageDestFormat.PremultipliedBGRA32 ||
destFormat == ImageDestFormat.PremultipliedBGRA8;
Half[] hr, hg, hb, ha;
float[] fr, fg, fb, fa;
hr = hg = hb = ha = null;
fr = fg = fb = fa = null;
if (isHalf)
{
if (!HalfChannels.ContainsKey("R"))
{
throw new ArgumentException("Half type channel R not found", "srcFormat");
}
if (!HalfChannels.ContainsKey("G"))
{
throw new ArgumentException("Half type channel G not found", "srcFormat");
}
if (!HalfChannels.ContainsKey("B"))
{
throw new ArgumentException("Half type channel B not found", "srcFormat");
}
hr = HalfChannels["R"];
hg = HalfChannels["G"];
hb = HalfChannels["B"];
if (srcFormat == ImageSourceFormat.HalfRGBA)
{
if (!HalfChannels.ContainsKey("A"))
{
throw new ArgumentException("Half type channel A not found", "srcFormat");
}
ha = HalfChannels["A"];
sourceAlpha = true;
}
}
else
{
if (!FloatChannels.ContainsKey("R"))
{
throw new ArgumentException("Single type channel R not found", "srcFormat");
}
if (!FloatChannels.ContainsKey("G"))
{
throw new ArgumentException("Single type channel G not found", "srcFormat");
}
if (!FloatChannels.ContainsKey("B"))
{
throw new ArgumentException("Single type channel B not found", "srcFormat");
}
fr = FloatChannels["R"];
fg = FloatChannels["G"];
fb = FloatChannels["B"];
if (srcFormat == ImageSourceFormat.HalfRGBA)
{
if (!FloatChannels.ContainsKey("A"))
{
throw new ArgumentException("Single type channel A not found", "srcFormat");
}
fa = FloatChannels["A"];
sourceAlpha = true;
}
}
// !PARALLEL
/*
* int srcIndex = 0;
* int destIndex = 0;
*
* BinaryWriter writer = new BinaryWriter(new MemoryStream(buffer));
*
* for (int y = 0; y < DataWindow.Height; y++, destIndex += padding) {
* GetScanlineBytes(bytesPerPixel, destIndex, srcIndex, isHalf, destinationAlpha, sourceAlpha,
* hr, hg, hb, ha, fr, fg, fb, fa,
* bitsPerPixel, gamma, premultiplied, bgra, buffer, writer);
* destIndex += DataWindow.Width * bytesPerPixel;
* srcIndex += DataWindow.Width;
* }
*
* writer.Dispose();
* writer.BaseStream.Dispose();
*/
var actions = (from y in Enumerable.Range(0, DataWindow.Height)
select(Action)(() =>
{
var destIndex = stride * y;
var srcIndex = DataWindow.Width * y;
using var stream = new MemoryStream(buffer);
using var writer = new BinaryWriter(stream);
GetScanlineBytes(bytesPerPixel, destIndex, srcIndex, isHalf, destinationAlpha, sourceAlpha,
hr, hg, hb, ha, fr, fg, fb, fa,
bitsPerPixel, gamma, premultiplied, bgra, buffer, writer);
})).ToArray();
Parallel.Invoke(actions);
return(buffer);
}
public byte[] GetBytes(ImageSourceFormat srcFormat, ImageDestFormat destFormat, GammaEncoding gamma)
{
return(GetBytes(srcFormat, destFormat, gamma, DataWindow.Width * EXRFile.GetBytesPerPixel(destFormat)));
}
