/// <summary>
/// Internal write implementation of the sub classes.
/// </summary>
/// <param name="writer"></param>
/// <exception cref="Exception">Expected DDS RGB24 or RGBA32 color format!</exception>
/// <exception cref="InvalidOperationException">
/// </exception>
protected override void _Write(BinaryWriter writer)
{
long baseOffset = writer.BaseStream.Position;
Bitmap bmp = CreateBitmap();
//bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
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!");
}
byte[] ddsBuffer = null;
if (PixelFormat == PvrPixelFormat.DDS_DXT1_RGB24)
{
DDSFormatDetails ddsFormatDetails = new DDSFormatDetails(DDSFormat.DDS_DXT1);
ddsBuffer = DDSGeneral.Save(MipMaps, ddsFormatDetails, DDSGeneral.AlphaSettings.KeepAlpha, DDSGeneral.MipHandling.Default);
}
else if (PixelFormat == PvrPixelFormat.DDS_DXT3_RGBA32)
{
DDSFormatDetails ddsFormatDetails = new DDSFormatDetails(DDSFormat.DDS_DXT3);
ddsBuffer = DDSGeneral.Save(MipMaps, ddsFormatDetails, DDSGeneral.AlphaSettings.KeepAlpha, DDSGeneral.MipHandling.Default);
}
if (HasGlobalIndex)
{
writer.Write(m_gbix);
writer.Write(GlobalIndexSize);
writer.Write(GlobalIndex);
}
writer.Write(m_pvrt);
writer.Write(ddsBuffer.Length + 16);
writer.Write((byte)PixelFormat);
writer.Write((byte)DataFormat);
writer.Write((ushort)0);
writer.Write((ushort)Width);
writer.Write((ushort)Height);
writer.Write(ddsBuffer);
}
else
{
// Set the data format and pixel format and load the appropiate codecs
PixelCodec = PvrPixelCodec.GetPixelCodec(PixelFormat);
DataCodec = PvrDataCodec.GetDataCodec(DataFormat);
// Make sure the pixel and data codecs exists and we can encode to it
if (PixelCodec == null || !PixelCodec.CanEncode)
{
throw new InvalidOperationException();
}
if (DataCodec == null || !DataCodec.CanEncode)
{
throw new InvalidOperationException();
}
DataCodec.PixelCodec = PixelCodec;
byte[] decodedData = null;
if (DataCodec.PaletteEntries != 0)
{
if (DataCodec.VQ)
{
decodedData = BitmapToRawVQ(bmp, DataCodec.PaletteEntries, out m_texturePalette);
}
else
{
// Convert the bitmap to an array containing indicies.
decodedData = BitmapToRawIndexed(bmp, DataCodec.PaletteEntries, out m_texturePalette);
// If this texture has an external palette file, set up the palette encoder
if (DataCodec.NeedsExternalPalette)
{
PaletteEncoder = new PvpPaletteEncoder(m_texturePalette, (ushort)DataCodec.PaletteEntries, PixelFormat, PixelCodec);
}
}
}
else
{
decodedData = BitmapToRaw(bmp);
}
// Calculate what the length of the texture will be
int textureLength = 16 + (int)(Width * Height * (DataCodec.Bpp / 8.0));
if (HasGlobalIndex)
{
textureLength += 16;
}
if (DataCodec.PaletteEntries != 0 && !DataCodec.NeedsExternalPalette)
{
textureLength += (DataCodec.PaletteEntries * PixelCodec.Bpp / 8);
}
// Calculate the mipmap padding (if the texture contains mipmaps)
int mipmapPadding = 0;
if (DataCodec.HasMipmaps)
{
if (DataFormat == PvrDataFormat.SQUARE_TWIDDLED_MIPMAP)
{
// A 1x1 mipmap takes up as much space as a 2x1 mipmap
// There are also 4 extra bytes at the end of the file
mipmapPadding = (DataCodec.Bpp) >> 3;
textureLength += 4;
}
else if (DataFormat == PvrDataFormat.SQUARE_TWIDDLED_MIPMAP_ALT)
{
// A 1x1 mipmap takes up as much space as a 2x2 mipmap
mipmapPadding = (3 * DataCodec.Bpp) >> 3;
}
textureLength += mipmapPadding;
for (int size = 1; size < Width; size <<= 1)
{
textureLength += Math.Max((size * size * DataCodec.Bpp) >> 3, 1);
}
}
MemoryStream output = new MemoryStream(textureLength);
BinaryWriter outputWriter = new BinaryWriter(output);
// Write out the GBIX header (if we are including one)
if (HasGlobalIndex)
{
outputWriter.Write(m_gbix);
outputWriter.Write(GlobalIndexSize);
outputWriter.Write(GlobalIndex);
}
// Write out the PVRT header
outputWriter.Write(m_pvrt);
if (HasGlobalIndex)
{
outputWriter.Write(textureLength - 24);
}
else
{
outputWriter.Write(textureLength - 8);
}
outputWriter.Write((byte)PixelFormat);
outputWriter.Write((byte)DataFormat);
outputWriter.Write((ushort)0);
outputWriter.Write((ushort)Width);
outputWriter.Write((ushort)Height);
// If we have an internal palette, write it
if (DataCodec.PaletteEntries != 0 && !DataCodec.NeedsExternalPalette)
{
byte[] palette = PixelCodec.EncodePalette(m_texturePalette, DataCodec.PaletteEntries);
output.Write(palette, 0, palette.Length);
}
// Write out any mipmaps
if (DataCodec.HasMipmaps)
{
// Write out any padding bytes before the 1x1 mipmap
for (int i = 0; i < mipmapPadding; i++)
{
output.WriteByte(0);
}
for (int size = 1; size < Width; size <<= 1)
{
byte[] mipmapDecodedData = null;
if (DataCodec.NeedsExternalPalette)
{
if (DataCodec.VQ)
{
mipmapDecodedData = BitmapToRawVQResized(bmp, size, 1, m_codeBook);
}
else
{
mipmapDecodedData = BitmapToRawIndexedResized(bmp, size, 1, m_palette);
}
}
else
{
mipmapDecodedData = BitmapToRawResized(bmp, size, 1);
}
byte[] mipmapTextureData = DataCodec.Encode(mipmapDecodedData, 0, size, size);
output.Write(mipmapTextureData, 0, mipmapTextureData.Length);
}
}
// Write the texture data
byte[] textureData = DataCodec.Encode(decodedData, Width, Height, null);
output.Write(textureData, 0, textureData.Length);
// If the data format is square twiddled with mipmaps, write out the extra bytes.
if (DataFormat == PvrDataFormat.SQUARE_TWIDDLED_MIPMAP)
{
output.Write(new byte[] { 0, 0, 0, 0 }, 0, 4);
}
// Compress the texture
if (CompressionFormat != PvrCompressionFormat.NONE)
{
CompressionCodec = PvrCompressionCodec.GetCompressionCodec(CompressionFormat);
if (CompressionCodec != null)
{
// Ok, we need to convert the current stream to an array, compress it, then write it back to a new stream
byte[] buffer = output.ToArray();
buffer = CompressionCodec.Compress(buffer, (HasGlobalIndex ? 0x20 : 0x10), PixelCodec, DataCodec);
writer.Write(buffer);
}
}
else
{
writer.Write(output.GetBuffer());
}
}
}
/// <summary>
/// 查找当前类型的图片
/// </summary>
/// <param name="byData">当前打开文件的字节数据</param>
/// <param name="file">当前文件</param>
/// <param name="imgInfos">查找到的图片的信息</param>
/// <returns>是否查找成功</returns>
public override List <byte[]> SearchImg(byte[] byData, string file, List <string> imgInfos)
{
List <byte[]> imgList = new List <byte[]>();
// 分析文件内部是否包括Pvr文件
for (int i = 0; i < byData.Length - 1024; i++)
{
if (byData[i] == 0x50 && byData[i + 1] == 0x56 && byData[i + 2] == 0x52 && byData[i + 3] == 0x54 &&
byData[i - 0x10] == 0x47 && byData[i - 0xf] == 0x42 && byData[i - 0xe] == 0x49 && byData[i - 0xd] == 0x58)
{
PvrPixelFormat pixelFormat = (PvrPixelFormat)byData[i + 0x08];
PvrDataFormat dataFormat = (PvrDataFormat)byData[i + 0x09];
PvrPixelCodec pixelCodec = PvrPixelCodec.GetPixelCodec(pixelFormat);
PvrDataCodec dataCodec = PvrDataCodec.GetDataCodec(dataFormat);
if (dataCodec == null)
{
continue;
}
dataCodec.PixelCodec = pixelCodec;
int byCountPalette = 0;
if (pixelCodec == null && byData[i + 0x08] == 0x6)
{
byCountPalette = 4;
}
else
{
byCountPalette = pixelCodec.Bpp >> 3;
}
// 取得图片大小
int width = (byData[i + 0xD] << 8) | byData[i + 0xC];
int height = (byData[i + 0xF] << 8) | byData[i + 0xE];
int imgByCount = (width * height * dataCodec.Bpp / 8) + (dataCodec.PaletteEntries * byCountPalette);
if (imgByCount == 0 || imgByCount > byData.Length)
{
throw new Exception("图片容量异常格式 : " + imgByCount);
}
byte[] byGvrData = new byte[0x20 + imgByCount];
Array.Copy(byData, i - 0x10, byGvrData, 0, byGvrData.Length);
string imgFileInfo = Util.GetShortName(file) + " " + (i - 0x10).ToString("x") + "--" + (i - 0x10 + byGvrData.Length).ToString("x");
imgList.Add(byGvrData);
imgInfos.Add(imgFileInfo);
// 取得调色板大小
if (dataCodec.NeedsExternalPalette)
{
int paletteCount = dataCodec.PaletteEntries * byCountPalette;
byte[] byPalette = new byte[paletteCount + 0x10];
int paletteDataStart = i - 0x30;
if (byData[paletteDataStart] == 0x50 && byData[paletteDataStart + 1] == 0x50 &&
byData[paletteDataStart + 2] == 0x56 && byData[paletteDataStart + 3] == 0x52)
{
paletteDataStart = i - 0x20 - paletteCount - 0x10 - 0x20;
}
else
{
paletteDataStart = i - 0x20 - paletteCount - 0x10;
}
Array.Copy(byData, paletteDataStart, byPalette, 0, byPalette.Length);
this.paletteData.Add(imgFileInfo + " " + paletteDataStart.ToString(), byPalette);
}
}
}
return(imgList);
}
/// <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);
}
}