protected override void _Read(BinaryReader reader)
{
long baseOffset = reader.BaseStream.Position;
byte[] buffer = reader.ReadBytes((int)reader.BaseStream.Length);
MemoryStream memoryStream = new MemoryStream(buffer, 0, buffer.Length, true, true);
DDS_Header header = new DDS_Header(memoryStream);
FormatDetails = new DDSFormatDetails(header.Format, header.DX10_DXGI_AdditionalHeader.dxgiFormat);
MipMaps = DDSGeneral.LoadDDS(memoryStream, header, 0, FormatDetails);
Width = header.Width;
Height = header.Height;
memoryStream.Close();
}
internal static List <MipMap> LoadImage(byte[] rawDDSData, ImageEngineFormat surfaceFormat, int width, int height, out DDSGeneral.DDS_HEADER header)
{
header = DDSGeneral.Build_DDS_Header(1, height, width, surfaceFormat);
List <MipMap> MipMaps = null;
// Create new fully formatted DDS i.e. one with a header.
MemoryStream stream = new MemoryStream();
BinaryWriter bw = new BinaryWriter(stream);
DDSGeneral.Write_DDS_Header(header, bw);
bw.Write(rawDDSData);
switch (surfaceFormat)
{
case ImageEngineFormat.DDS_DXT1:
case ImageEngineFormat.DDS_DXT2:
case ImageEngineFormat.DDS_DXT3:
case ImageEngineFormat.DDS_DXT4:
case ImageEngineFormat.DDS_DXT5:
if (WindowsWICCodecsAvailable)
{
MipMaps = WIC_Codecs.LoadWithCodecs(stream, 0, 0, true);
}
else
{
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
}
break;
case ImageEngineFormat.DDS_ARGB:
case ImageEngineFormat.DDS_A8L8:
case ImageEngineFormat.DDS_RGB:
case ImageEngineFormat.DDS_ATI1:
case ImageEngineFormat.DDS_ATI2_3Dc:
case ImageEngineFormat.DDS_G8_L8:
case ImageEngineFormat.DDS_V8U8:
MipMaps = DDSGeneral.LoadDDS(stream, header, new Format(surfaceFormat), 0);
break;
default:
throw new InvalidDataException("Image format is unknown.");
}
bw.Dispose(); // Also disposes MemoryStream
return(MipMaps);
}
/// <summary>
/// Loads image from stream.
/// </summary>
/// <param name="stream">Full image stream.</param>
/// <param name="Format">Detected Format.</param>
/// <param name="extension">File Extension. Used to determine format more easily.</param>
/// <param name="maxWidth">Maximum width to allow when loading. Resized if enforceResize = true.</param>
/// <param name="maxHeight">Maximum height to allow when loading. Resized if enforceResize = true.</param>
/// <param name="enforceResize">True = Resizes image to match either maxWidth or maxHeight.</param>
/// <param name="header">DDS header of image.</param>
/// <param name="mergeAlpha">ONLY valid when enforceResize is true. True = Flattens alpha down, directly affecting RGB.</param>
/// <returns>List of Mipmaps.</returns>
internal static List <MipMap> LoadImage(Stream stream, out Format Format, string extension, int maxWidth, int maxHeight, bool enforceResize, out DDSGeneral.DDS_HEADER header, bool mergeAlpha)
{
// KFreon: See if image is built-in codec agnostic.
header = null;
Format = ImageFormats.ParseFormat(stream, extension, ref header);
List <MipMap> MipMaps = null;
switch (Format.SurfaceFormat)
{
case ImageEngineFormat.BMP:
case ImageEngineFormat.JPG:
case ImageEngineFormat.PNG:
MipMaps = WIC_Codecs.LoadWithCodecs(stream, maxWidth, maxHeight, false);
break;
case ImageEngineFormat.DDS_DXT1:
case ImageEngineFormat.DDS_DXT2:
case ImageEngineFormat.DDS_DXT3:
case ImageEngineFormat.DDS_DXT4:
case ImageEngineFormat.DDS_DXT5:
if (WindowsWICCodecsAvailable)
{
MipMaps = WIC_Codecs.LoadWithCodecs(stream, maxWidth, maxHeight, true);
}
else
{
MipMaps = DDSGeneral.LoadDDS(stream, header, Format, maxHeight > maxWidth ? maxHeight : maxWidth);
}
break;
case ImageEngineFormat.DDS_ARGB:
case ImageEngineFormat.DDS_A8L8:
case ImageEngineFormat.DDS_RGB:
case ImageEngineFormat.DDS_ATI1:
case ImageEngineFormat.DDS_ATI2_3Dc:
case ImageEngineFormat.DDS_G8_L8:
case ImageEngineFormat.DDS_V8U8:
MipMaps = DDSGeneral.LoadDDS(stream, header, Format, maxHeight > maxWidth ? maxHeight : maxWidth);
break;
case ImageEngineFormat.TGA:
var img = new TargaImage(stream);
byte[] pixels = UsefulThings.WinForms.Imaging.GetPixelDataFromBitmap(img.Image);
WriteableBitmap wbmp = UsefulThings.WPF.Images.CreateWriteableBitmap(pixels, img.Image.Width, img.Image.Height);
var mip1 = new MipMap(wbmp);
MipMaps = new List <MipMap>()
{
mip1
};
img.Dispose();
break;
default:
throw new InvalidDataException("Image format is unknown.");
}
if (MipMaps == null || MipMaps.Count == 0)
{
throw new InvalidDataException("No mipmaps loaded.");
}
// KFreon: No resizing requested
if (maxHeight == 0 && maxWidth == 0)
{
return(MipMaps);
}
// KFreon: Test if we need to resize
var top = MipMaps.First();
if (top.Width == maxWidth || top.Height == maxHeight)
{
return(MipMaps);
}
int max = maxWidth > maxHeight ? maxWidth : maxHeight;
// KFreon: Attempt to resize
var sizedMips = MipMaps.Where(m => m.Width > m.Height ? m.Width <= max : m.Height <= max);
if (sizedMips != null && sizedMips.Any()) // KFreon: If there's already a mip, return that.
{
MipMaps = sizedMips.ToList();
}
else if (enforceResize)
{
// Get top mip and clear others.
var mip = MipMaps[0];
MipMaps.Clear();
MipMap output = null;
int divisor = mip.Width > mip.Height ? mip.Width / max : mip.Height / max;
output = Resize(mip, 1f / divisor, mergeAlpha);
MipMaps.Add(output);
}
return(MipMaps);
}
internal static List <MipMap> LoadImage(Stream imageStream, AbstractHeader header, int maxDimension, double scale, ImageFormats.ImageEngineFormatDetails formatDetails)
{
imageStream.Seek(0, SeekOrigin.Begin);
List <MipMap> MipMaps = null;
int decodeWidth = header.Width > header.Height ? maxDimension : 0;
int decodeHeight = header.Width < header.Height ? maxDimension : 0;
switch (header.Format)
{
case ImageEngineFormat.DDS_DXT1:
case ImageEngineFormat.DDS_DXT2:
case ImageEngineFormat.DDS_DXT3:
case ImageEngineFormat.DDS_DXT4:
case ImageEngineFormat.DDS_DXT5:
MipMaps = WIC_Codecs.LoadWithCodecs(imageStream, decodeWidth, decodeHeight, scale, true, formatDetails);
if (MipMaps == null)
{
// Windows codecs unavailable/failed. Load with mine.
MipMaps = DDSGeneral.LoadDDS((MemoryStream)imageStream, (DDS_Header)header, maxDimension, formatDetails);
}
break;
case ImageEngineFormat.DDS_G8_L8:
case ImageEngineFormat.DDS_ARGB_4:
case ImageEngineFormat.DDS_RGB_8:
case ImageEngineFormat.DDS_V8U8:
case ImageEngineFormat.DDS_A8L8:
case ImageEngineFormat.DDS_ARGB_8:
case ImageEngineFormat.DDS_ARGB_32F:
case ImageEngineFormat.DDS_ABGR_8:
case ImageEngineFormat.DDS_G16_R16:
case ImageEngineFormat.DDS_R5G6B5:
case ImageEngineFormat.DDS_ATI1:
case ImageEngineFormat.DDS_ATI2_3Dc:
case ImageEngineFormat.DDS_CUSTOM:
case ImageEngineFormat.DDS_DX10:
MipMaps = DDSGeneral.LoadDDS((MemoryStream)imageStream, (DDS_Header)header, maxDimension, formatDetails);
break;
case ImageEngineFormat.GIF:
case ImageEngineFormat.JPG:
case ImageEngineFormat.PNG:
case ImageEngineFormat.BMP:
case ImageEngineFormat.TIF:
MipMaps = WIC_Codecs.LoadWithCodecs(imageStream, decodeWidth, decodeHeight, scale, false, formatDetails);
break;
case ImageEngineFormat.TGA:
using (var tga = new TargaImage(imageStream, ((TGA_Header)header).header))
MipMaps = new List <MipMap>()
{
new MipMap(tga.ImageData, tga.Header.Width, tga.Header.Height, formatDetails)
};
break;
default:
throw new FormatException($"Format unknown: {header.Format}.");
}
return(MipMaps);
}
/// <summary>
/// Internal read implementation of the sub classes.
/// </summary>
/// <param name="reader"></param>
/// <exception cref="Exception">Expected DDS RGB24 or RGBA32 color format!</exception>
/// <exception cref="NotImplementedException">TODO</exception>
protected override void _Read(BinaryReader reader)
{
long baseOffset = reader.BaseStream.Position;
int gbixOffset = 0;
int pvrtOffset = 0;
uint identifier = reader.ReadUInt32();
if (identifier == m_gbix) //"GBIX"
{
HasGlobalIndex = true;
GlobalIndexSize = reader.ReadUInt32();
GlobalIndex = reader.ReadBytes((int)GlobalIndexSize);
reader.BaseStream.Seek(4, SeekOrigin.Current); //Skip "PVRT"
gbixOffset = 0x00;
pvrtOffset = 0x08 + (int)GlobalIndexSize;
}
else
{
identifier = reader.ReadUInt32();
if (identifier == m_gbix)
{
HasGlobalIndex = true;
GlobalIndexSize = reader.ReadUInt32();
GlobalIndex = reader.ReadBytes((int)GlobalIndexSize);
gbixOffset = 0x04;
pvrtOffset = 0x0C + (int)GlobalIndexSize;
}
else if (identifier == m_pvrt)
{
gbixOffset = -1;
pvrtOffset = 0x04;
}
else
{
gbixOffset = -1;
pvrtOffset = 0x00;
reader.BaseStream.Seek(-4, SeekOrigin.Current);
}
}
// Read information about the texture
ContentSize = reader.ReadUInt32();
PixelFormat = (PvrPixelFormat)reader.ReadByte();
DataFormat = (PvrDataFormat)reader.ReadByte();
reader.BaseStream.Seek(2, SeekOrigin.Current);
Width = reader.ReadUInt16();
Height = reader.ReadUInt16();
if (DataFormat == PvrDataFormat.DDS || DataFormat == PvrDataFormat.DDS_2)
{
if (!(PixelFormat == PvrPixelFormat.DDS_DXT1_RGB24 || PixelFormat == PvrPixelFormat.DDS_DXT3_RGBA32))
{
throw new Exception("Expected DDS RGB24 or RGBA32 color format!");
}
long ddsOffset = reader.BaseStream.Position;
DDS_Header header = new DDS_Header(reader.BaseStream);
DDSFormatDetails format = new DDSFormatDetails(header.Format, header.DX10_DXGI_AdditionalHeader.dxgiFormat);
reader.BaseStream.Seek(ddsOffset, SeekOrigin.Begin);
byte[] ddsBuffer = reader.ReadBytes(header.dwPitchOrLinearSize + header.dwSize + 128);
MemoryStream memoryStream = new MemoryStream(ddsBuffer, 0, ddsBuffer.Length, true, true);
MipMaps = DDSGeneral.LoadDDS(memoryStream, header, 0, format);
memoryStream.Close();
Width = header.Width;
Height = header.Height;
}
else
{
// Get the codecs and make sure we can decode using them
PixelCodec = PvrPixelCodec.GetPixelCodec(PixelFormat);
DataCodec = PvrDataCodec.GetDataCodec(DataFormat);
if (DataCodec != null && PixelCodec != null)
{
DataCodec.PixelCodec = PixelCodec;
}
// Set the number of palette entries
int paletteEntries = DataCodec.PaletteEntries;
if (DataFormat == PvrDataFormat.VECTOR_QUANTIZATION_SMALL || DataFormat == PvrDataFormat.VECTOR_QUANTIZATION_SMALL_MIPMAP)
{
if (Width <= 16)
{
paletteEntries = 64; // Actually 16
}
else if (Width <= 32)
{
paletteEntries = 256; // Actually 64
}
else if (Width <= 64)
{
paletteEntries = 512; // Actually 128
}
else
{
paletteEntries = 1024; // Actually 256
}
}
// Set the palette and data offsets
int paletteOffset = 0;
int dataOffset = 0;
if (paletteEntries == 0 || DataCodec.NeedsExternalPalette)
{
paletteOffset = -1;
dataOffset = pvrtOffset + 0x10;
}
else
{
paletteOffset = pvrtOffset + 0x10;
dataOffset = paletteOffset + (paletteEntries * (PixelCodec.Bpp >> 3));
}
// Get the compression format and determine if we need to decompress this texture
reader.BaseStream.Seek(baseOffset, SeekOrigin.Begin);
uint first = reader.ReadUInt32();
reader.BaseStream.Seek(baseOffset + pvrtOffset + 4, SeekOrigin.Begin);
uint second = reader.ReadUInt32();
if (first == second - pvrtOffset + dataOffset + 8)
{
CompressionFormat = PvrCompressionFormat.RLE;
}
else
{
CompressionFormat = PvrCompressionFormat.NONE;
}
CompressionCodec = PvrCompressionCodec.GetCompressionCodec(CompressionFormat);
if (CompressionFormat != PvrCompressionFormat.NONE && CompressionCodec != null)
{
//TODO: Convert to stream compatible code
throw new NotImplementedException("TODO");
//m_encodedData = CompressionCodec.Decompress(m_encodedData, dataOffset, PixelCodec, DataCodec);
// Now place the offsets in the appropiate area
if (CompressionFormat == PvrCompressionFormat.RLE)
{
if (gbixOffset != -1)
{
gbixOffset -= 4;
}
pvrtOffset -= 4;
if (paletteOffset != -1)
{
paletteOffset -= 4;
}
dataOffset -= 4;
}
}
// If the texture contains mipmaps, gets the offsets of them
int[] mipmapOffsets;
if (DataCodec.HasMipmaps)
{
int mipmapOffset = 0;
mipmapOffsets = new int[(int)Math.Log(Width, 2) + 1];
// Calculate the padding for the first mipmap offset
if (DataFormat == PvrDataFormat.SQUARE_TWIDDLED_MIPMAP)
{
mipmapOffset = (DataCodec.Bpp) >> 3; // A 1x1 mipmap takes up as much space as a 2x1 mipmap
}
else if (DataFormat == PvrDataFormat.SQUARE_TWIDDLED_MIPMAP_ALT)
{
mipmapOffset = (3 * DataCodec.Bpp) >> 3; // A 1x1 mipmap takes up as much space as a 2x2 mipmap
}
for (int i = mipmapOffsets.Length - 1, size = 1; i >= 0; i--, size <<= 1)
{
mipmapOffsets[i] = mipmapOffset;
mipmapOffset += Math.Max((size * size * DataCodec.Bpp) >> 3, 1);
}
}
else
{
mipmapOffsets = new int[1] {
0
};
}
//DecodeMipmaps()
if (paletteOffset != -1) // The texture contains an embedded palette
{
reader.BaseStream.Seek(baseOffset + paletteOffset, SeekOrigin.Begin);
DataCodec.SetPalette(reader, paletteEntries);
}
MipMaps = new List <MipMap>();
if (DataCodec.HasMipmaps)
{
for (int i = 0, size = Width; i < mipmapOffsets.Length; i++, size >>= 1)
{
reader.BaseStream.Seek(baseOffset + dataOffset + mipmapOffsets[i], SeekOrigin.Begin);
byte[] pixels = DataCodec.Decode(reader, size, size, PixelCodec);
MipMaps.Add(new MipMap(pixels, size, size));
}
}
else
{
reader.BaseStream.Seek(baseOffset + dataOffset + mipmapOffsets[0], SeekOrigin.Begin);
byte[] pixels = DataCodec.Decode(reader, Width, Height, PixelCodec);
MipMaps.Add(new MipMap(pixels, Width, Height));
}
}
if (HasGlobalIndex)
{
reader.BaseStream.Seek(baseOffset + ContentSize + 0xC, SeekOrigin.Begin);
}
else
{
reader.BaseStream.Seek(baseOffset + ContentSize, SeekOrigin.Begin);
}
}
