//! \file ImageTLG.cs //! \date Thu Jul 17 21:31:39 2014 //! \brief KiriKiri TLG image implementation. //--------------------------------------------------------------------------- // TLG5/6 decoder // Copyright (C) 2000-2005 W.Dee and contributors // // C# port by morkt // using System; using System.IO; using System.ComponentModel.Composition; using System.Windows.Media; using GameRes.Utility; using System.Collections.Generic; using System.Diagnostics; using System.Text; namespace GameRes.Formats.KiriKiri { internal class TlgMetaData : ImageMetaData { public int Version; public int DataOffset; } [Export(typeof(ImageFormat))] public class TlgFormat : ImageFormat { public override string Tag { get { return "TLG"; } } public override string Description { get { return "KiriKiri game engine image format"; } } public override uint Signature { get { return 0x30474c54; } } // "TLG0" public TlgFormat () { Extensions = new string[] { "tlg", "tlg5", "tlg6" }; Signatures = new uint[] { 0x30474c54, 0x35474c54, 0x36474c54, 0x35474cAB }; } public override ImageMetaData ReadMetaData (Stream stream) { var header = new byte[0x26]; if (header.Length != stream.Read (header, 0, header.Length)) return null; int offset = 0xf; if (!Binary.AsciiEqual (header, "TLG0.0\x00sds\x1a")) offset = 0; int version; if (!Binary.AsciiEqual (header, offset+6, "\x00raw\x1a")) return null; if (0xAB == header[offset]) header[offset] = (byte)'T'; if (Binary.AsciiEqual (header, offset, "TLG6.0")) version = 6; else if (Binary.AsciiEqual (header, offset, "TLG5.0")) version = 5; else if (Binary.AsciiEqual (header, offset, "XXXYYY")) { version = 5; header[offset+0x0C] ^= 0xAB; header[offset+0x10] ^= 0xAC; } else if (Binary.AsciiEqual (header, offset, "XXXZZZ")) { version = 6; header[offset+0x0F] ^= 0xAB; header[offset+0x13] ^= 0xAC; } else return null; int colors = header[offset+11]; if (6 == version) { if (1 != colors && 4 != colors && 3 != colors) return null; if (header[offset+12] != 0 || header[offset+13] != 0 || header[offset+14] != 0) return null; offset += 15; } else { if (4 != colors && 3 != colors) return null; offset += 12; } uint width = LittleEndian.ToUInt32 (header, offset); uint height = LittleEndian.ToUInt32 (header, offset+4); return new TlgMetaData { Width = width, Height = height, BPP = colors*8, Version = version, DataOffset = offset+8, }; } public override ImageData Read (Stream file, ImageMetaData info) { var meta = (TlgMetaData)info; file.Position = meta.DataOffset; using (var src = new ArcView.Reader (file)) { var image = ReadTlg (src, meta); int tail_size = (int)Math.Min (file.Length - file.Position, 512); if (tail_size > 8) { var tail = src.ReadBytes (tail_size); try { var blended_image = ApplyTags (image, meta, tail); if (null != blended_image) return blended_image; } catch (Exception X) { Trace.WriteLine (X.Message, "[TlgFormat.Read]"); } } PixelFormat format = 32 == meta.BPP ? PixelFormats.Bgra32 : PixelFormats.Bgr32; return ImageData.Create (meta, format, null, image, (int)meta.Width * 4); } } public override void Write (Stream file, ImageData image) { throw new NotImplementedException ("TlgFormat.Write not implemented"); } byte[] ReadTlg (BinaryReader src, TlgMetaData info) { if (6 == info.Version) return ReadV6 (src, info); else return ReadV5 (src, info); } ImageData ApplyTags (byte[] image, TlgMetaData meta, byte[] tail) { int i = tail.Length - 8; while (i >= 0) { if ('s' == tail[i+3] && 'g' == tail[i+2] && 'a' == tail[i+1] && 't' == tail[i]) break; --i; } if (i < 0) return null; var tags = new TagsParser (tail, i+4); if (!tags.Parse()) return null; var base_name = tags.GetString (1); meta.OffsetX = tags.GetInt (2) & 0xFFFF; meta.OffsetY = tags.GetInt (3) & 0xFFFF; if (string.IsNullOrEmpty (base_name)) return null; base_name = VFS.CombinePath (VFS.GetDirectoryName (meta.FileName), base_name); if (base_name == meta.FileName) return null; TlgMetaData base_info; byte[] base_image; using (var base_file = VFS.OpenSeekableStream (base_name)) using (var base_src = new BinaryReader (base_file)) { base_info = ReadMetaData (base_file) as TlgMetaData; if (null == base_info) return null; base_info.FileName = base_name; base_file.Position = base_info.DataOffset; base_image = ReadTlg (base_src, base_info); } var pixels = BlendImage (base_image, base_info, image, meta); PixelFormat format = 32 == base_info.BPP ? PixelFormats.Bgra32 : PixelFormats.Bgr32; return ImageData.Create (base_info, format, null, pixels, (int)base_info.Width*4); } byte[] BlendImage (byte[] base_image, ImageMetaData base_info, byte[] overlay, ImageMetaData overlay_info) { int dst_stride = (int)base_info.Width * 4; int src_stride = (int)overlay_info.Width * 4; int dst = overlay_info.OffsetY * dst_stride + overlay_info.OffsetX * 4; int src = 0; int gap = dst_stride - src_stride; for (uint y = 0; y < overlay_info.Height; ++y) { for (uint x = 0; x < overlay_info.Width; ++x) { byte src_alpha = overlay[src+3]; if (src_alpha != 0) { if (0xFF == src_alpha || 0 == base_image[dst+3]) { base_image[dst] = overlay[src]; base_image[dst+1] = overlay[src+1]; base_image[dst+2] = overlay[src+2]; base_image[dst+3] = src_alpha; } else { // FIXME this blending algorithm is oversimplified. base_image[dst+0] = (byte)((overlay[src+0] * src_alpha + base_image[dst+0] * (0xFF - src_alpha)) / 0xFF); base_image[dst+1] = (byte)((overlay[src+1] * src_alpha + base_image[dst+1] * (0xFF - src_alpha)) / 0xFF); base_image[dst+2] = (byte)((overlay[src+2] * src_alpha + base_image[dst+2] * (0xFF - src_alpha)) / 0xFF); base_image[dst+3] = (byte)Math.Max (src_alpha, base_image[dst+3]); } } dst += 4; src += 4; } dst += gap; } return base_image; } const int TVP_TLG6_H_BLOCK_SIZE = 8; const int TVP_TLG6_W_BLOCK_SIZE = 8; const int TVP_TLG6_GOLOMB_N_COUNT = 4; const int TVP_TLG6_LeadingZeroTable_BITS = 12; const int TVP_TLG6_LeadingZeroTable_SIZE = (1<> 8 & 0xff); LZSS_text[p++] = (byte)(i >> 16 & 0xff); LZSS_text[p++] = (byte)(i >> 24 & 0xff); LZSS_text[p++] = (byte)(j & 0xff); LZSS_text[p++] = (byte)(j >> 8 & 0xff); LZSS_text[p++] = (byte)(j >> 16 & 0xff); LZSS_text[p++] = (byte)(j >> 24 & 0xff); } } // read chroma filter types. // chroma filter types are compressed via LZSS as used by TLG5. { int inbuf_size = src.ReadInt32(); byte[] inbuf = src.ReadBytes (inbuf_size); if (inbuf_size != inbuf.Length) return null; TVPTLG5DecompressSlide (filter_types, inbuf, inbuf_size, LZSS_text, 0); } // for each horizontal block group ... for (int y = 0; y < height; y += TVP_TLG6_H_BLOCK_SIZE) { int ylim = y + TVP_TLG6_H_BLOCK_SIZE; if (ylim >= height) ylim = height; int pixel_count = (ylim - y) * width; // decode values for (int c = 0; c < colors; c++) { // read bit length int bit_length = src.ReadInt32(); // get compress method int method = (bit_length >> 30) & 3; bit_length &= 0x3fffffff; // compute byte length int byte_length = bit_length / 8; if (0 != (bit_length % 8)) byte_length++; // read source from input src.Read (bit_pool, 0, byte_length); // decode values // two most significant bits of bitlength are // entropy coding method; // 00 means Golomb method, // 01 means Gamma method (not yet suppoted), // 10 means modified LZSS method (not yet supported), // 11 means raw (uncompressed) data (not yet supported). switch (method) { case 0: if (c == 0 && colors != 1) TVPTLG6DecodeGolombValuesForFirst (pixelbuf, pixel_count, bit_pool); else TVPTLG6DecodeGolombValues (pixelbuf, c*8, pixel_count, bit_pool); break; default: throw new InvalidFormatException ("Unsupported entropy coding method"); } } // for each line int ft = (y / TVP_TLG6_H_BLOCK_SIZE) * x_block_count; // within filter_types int skipbytes = (ylim - y) * TVP_TLG6_W_BLOCK_SIZE; for (int yy = y; yy < ylim; yy++) { int curline = yy*width; int dir = (yy&1)^1; int oddskip = ((ylim - yy -1) - (yy-y)); if (0 != main_count) { int start = ((width < TVP_TLG6_W_BLOCK_SIZE) ? width : TVP_TLG6_W_BLOCK_SIZE) * (yy - y); TVPTLG6DecodeLineGeneric ( prevline, prevline_index, image_bits, curline, width, 0, main_count, filter_types, ft, skipbytes, pixelbuf, start, zerocolor, oddskip, dir); } if (main_count != x_block_count) { int ww = fraction; if (ww > TVP_TLG6_W_BLOCK_SIZE) ww = TVP_TLG6_W_BLOCK_SIZE; int start = ww * (yy - y); TVPTLG6DecodeLineGeneric ( prevline, prevline_index, image_bits, curline, width, main_count, x_block_count, filter_types, ft, skipbytes, pixelbuf, start, zerocolor, oddskip, dir); } prevline = image_bits; prevline_index = curline; } } int stride = width * 4; var pixels = new byte[height * stride]; Buffer.BlockCopy (image_bits, 0, pixels, 0, pixels.Length); return pixels; } byte[] ReadV5 (BinaryReader src, TlgMetaData info) { int width = (int)info.Width; int height = (int)info.Height; int colors = info.BPP / 8; int blockheight = src.ReadInt32(); int blockcount = (height - 1) / blockheight + 1; // skip block size section src.BaseStream.Seek (blockcount * 4, SeekOrigin.Current); int stride = width * 4; var image_bits = new byte[height * stride]; var text = new byte[4096]; for (int i = 0; i < 4096; ++i) text[i] = 0; var inbuf = new byte[blockheight * width + 10]; byte [][] outbuf = new byte[4][]; for (int i = 0; i < colors; i++) outbuf[i] = new byte[blockheight * width + 10]; int z = 0; int prevline = -1; for (int y_blk = 0; y_blk < height; y_blk += blockheight) { // read file and decompress for (int c = 0; c < colors; c++) { byte mark = src.ReadByte(); int size; size = src.ReadInt32(); if (mark == 0) { // modified LZSS compressed data if (size != src.Read (inbuf, 0, size)) return null; z = TVPTLG5DecompressSlide (outbuf[c], inbuf, size, text, z); } else { // raw data src.Read (outbuf[c], 0, size); } } // compose colors and store int y_lim = y_blk + blockheight; if (y_lim > height) y_lim = height; int outbuf_pos = 0; for (int y = y_blk; y < y_lim; y++) { int current = y * stride; int current_org = current; if (prevline >= 0) { // not first line switch(colors) { case 3: TVPTLG5ComposeColors3To4 (image_bits, current, prevline, outbuf, outbuf_pos, width); break; case 4: TVPTLG5ComposeColors4To4 (image_bits, current, prevline, outbuf, outbuf_pos, width); break; } } else { // first line switch(colors) { case 3: for (int pr = 0, pg = 0, pb = 0, x = 0; x < width; x++) { int b = outbuf[0][outbuf_pos+x]; int g = outbuf[1][outbuf_pos+x]; int r = outbuf[2][outbuf_pos+x]; b += g; r += g; image_bits[current++] = (byte)(pb += b); image_bits[current++] = (byte)(pg += g); image_bits[current++] = (byte)(pr += r); image_bits[current++] = 0xff; } break; case 4: for (int pr = 0, pg = 0, pb = 0, pa = 0, x = 0; x < width; x++) { int b = outbuf[0][outbuf_pos+x]; int g = outbuf[1][outbuf_pos+x]; int r = outbuf[2][outbuf_pos+x]; int a = outbuf[3][outbuf_pos+x]; b += g; r += g; image_bits[current++] = (byte)(pb += b); image_bits[current++] = (byte)(pg += g); image_bits[current++] = (byte)(pr += r); image_bits[current++] = (byte)(pa += a); } break; } } outbuf_pos += width; prevline = current_org; } } return image_bits; } void TVPTLG5ComposeColors3To4 (byte[] outp, int outp_index, int upper, byte[][] buf, int bufpos, int width) { byte pc0 = 0, pc1 = 0, pc2 = 0; byte c0, c1, c2; for (int x = 0; x < width; x++) { c0 = buf[0][bufpos+x]; c1 = buf[1][bufpos+x]; c2 = buf[2][bufpos+x]; c0 += c1; c2 += c1; outp[outp_index++] = (byte)(((pc0 += c0) + outp[upper+0]) & 0xff); outp[outp_index++] = (byte)(((pc1 += c1) + outp[upper+1]) & 0xff); outp[outp_index++] = (byte)(((pc2 += c2) + outp[upper+2]) & 0xff); outp[outp_index++] = 0xff; upper += 4; } } void TVPTLG5ComposeColors4To4 (byte[] outp, int outp_index, int upper, byte[][] buf, int bufpos, int width) { byte pc0 = 0, pc1 = 0, pc2 = 0, pc3 = 0; byte c0, c1, c2, c3; for (int x = 0; x < width; x++) { c0 = buf[0][bufpos+x]; c1 = buf[1][bufpos+x]; c2 = buf[2][bufpos+x]; c3 = buf[3][bufpos+x]; c0 += c1; c2 += c1; outp[outp_index++] = (byte)(((pc0 += c0) + outp[upper+0]) & 0xff); outp[outp_index++] = (byte)(((pc1 += c1) + outp[upper+1]) & 0xff); outp[outp_index++] = (byte)(((pc2 += c2) + outp[upper+2]) & 0xff); outp[outp_index++] = (byte)(((pc3 += c3) + outp[upper+3]) & 0xff); upper += 4; } } int TVPTLG5DecompressSlide (byte[] outbuf, byte[] inbuf, int inbuf_size, byte[] text, int initialr) { int r = initialr; uint flags = 0; int o = 0; for (int i = 0; i < inbuf_size; ) { if (((flags >>= 1) & 256) == 0) { flags = (uint)(inbuf[i++] | 0xff00); } if (0 != (flags & 1)) { int mpos = inbuf[i] | ((inbuf[i+1] & 0xf) << 8); int mlen = (inbuf[i+1] & 0xf0) >> 4; i += 2; mlen += 3; if (mlen == 18) mlen += inbuf[i++]; while (0 != mlen--) { outbuf[o++] = text[r++] = text[mpos++]; mpos &= (4096 - 1); r &= (4096 - 1); } } else { byte c = inbuf[i++]; outbuf[o++] = c; text[r++] = c; r &= (4096 - 1); } } return r; } static uint tvp_make_gt_mask (uint a, uint b) { uint tmp2 = ~b; uint tmp = ((a & tmp2) + (((a ^ tmp2) >> 1) & 0x7f7f7f7f) ) & 0x80808080; tmp = ((tmp >> 7) + 0x7f7f7f7f) ^ 0x7f7f7f7f; return tmp; } static uint tvp_packed_bytes_add (uint a, uint b) { uint tmp = (uint)((((a & b)<<1) + ((a ^ b) & 0xfefefefe) ) & 0x01010100); return a+b-tmp; } static uint tvp_med2 (uint a, uint b, uint c) { /* do Median Edge Detector thx, Mr. sugi at kirikiri.info */ uint aa_gt_bb = tvp_make_gt_mask(a, b); uint a_xor_b_and_aa_gt_bb = ((a ^ b) & aa_gt_bb); uint aa = a_xor_b_and_aa_gt_bb ^ a; uint bb = a_xor_b_and_aa_gt_bb ^ b; uint n = tvp_make_gt_mask(c, bb); uint nn = tvp_make_gt_mask(aa, c); uint m = ~(n | nn); return (n & aa) | (nn & bb) | ((bb & m) - (c & m) + (aa & m)); } static uint tvp_med (uint a, uint b, uint c, uint v) { return tvp_packed_bytes_add (tvp_med2 (a, b, c), v); } static uint tvp_avg (uint a, uint b, uint c, uint v) { return tvp_packed_bytes_add ((((a&b) + (((a^b) & 0xfefefefe) >> 1)) + ((a^b)&0x01010101)), v); } delegate uint tvp_decoder (uint a, uint b, uint c, uint v); void TVPTLG6DecodeLineGeneric (uint[] prevline, int prevline_index, uint[] curline, int curline_index, int width, int start_block, int block_limit, byte[] filtertypes, int filtertypes_index, int skipblockbytes, uint[] inbuf, int inbuf_index, uint initialp, int oddskip, int dir) { /* chroma/luminosity decoding (this does reordering, color correlation filter, MED/AVG at a time) */ uint p, up; if (0 != start_block) { prevline_index += start_block * TVP_TLG6_W_BLOCK_SIZE; curline_index += start_block * TVP_TLG6_W_BLOCK_SIZE; p = curline[curline_index-1]; up = prevline[prevline_index-1]; } else { p = up = initialp; } inbuf_index += skipblockbytes * start_block; int step = 0 != (dir & 1) ? 1 : -1; for (int i = start_block; i < block_limit; i++) { int w = width - i*TVP_TLG6_W_BLOCK_SIZE; if (w > TVP_TLG6_W_BLOCK_SIZE) w = TVP_TLG6_W_BLOCK_SIZE; int ww = w; if (step == -1) inbuf_index += ww-1; if (0 != (i & 1)) inbuf_index += oddskip * ww; tvp_decoder decoder; switch (filtertypes[filtertypes_index+i]) { case 0: decoder = (a, b, c, v) => tvp_med (a, b, c, v); break; case 1: decoder = (a, b, c, v) => tvp_avg (a, b, c, v); break; case 2: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (((v>>8)&0xff)<<8) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 3: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (((v>>8)&0xff)<<8) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 4: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 5: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 6: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 7: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 8: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 9: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 10: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 11: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 12: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 13: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 14: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 15: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 16: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 17: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 18: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))) + ((v&0xff000000)))); break; case 19: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))) + ((v&0xff000000)))); break; case 20: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 21: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 22: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 23: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 24: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 25: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 26: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 27: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff))) + ((v&0xff000000)))); break; case 28: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff)+((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 29: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+(v&0xff)+((v>>8)&0xff)+((v>>16)&0xff))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v>>16)&0xff))<<8)) + (0xff & ((v&0xff)+((v>>8)&0xff)+((v>>16)&0xff))) + ((v&0xff000000)))); break; case 30: decoder = (a, b, c, v) => tvp_med (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v&0xff)<<1))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v&0xff)<<1))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; case 31: decoder = (a, b, c, v) => tvp_avg (a, b, c, (uint) ((0xff0000 & ((((v>>16)&0xff)+((v&0xff)<<1))<<16)) + (0xff00 & ((((v>>8)&0xff)+((v&0xff)<<1))<<8)) + (0xff & ((v&0xff))) + ((v&0xff000000)))); break; default: return; } do { uint u = prevline[prevline_index]; p = decoder (p, u, up, inbuf[inbuf_index]); up = u; curline[curline_index] = p; curline_index++; prevline_index++; inbuf_index += step; } while (0 != --w); if (step == 1) inbuf_index += skipblockbytes - ww; else inbuf_index += skipblockbytes + 1; if (0 != (i&1)) inbuf_index -= oddskip * ww; } } static class TVP_Tables { public static byte[] TVPTLG6LeadingZeroTable = new byte[TVP_TLG6_LeadingZeroTable_SIZE]; public static sbyte[,] TVPTLG6GolombBitLengthTable = new sbyte [TVP_TLG6_GOLOMB_N_COUNT*2*128, TVP_TLG6_GOLOMB_N_COUNT]; static short[,] TVPTLG6GolombCompressed = new short[TVP_TLG6_GOLOMB_N_COUNT,9] { {3,7,15,27,63,108,223,448,130,}, {3,5,13,24,51,95,192,384,257,}, {2,5,12,21,39,86,155,320,384,}, {2,3,9,18,33,61,129,258,511,}, /* Tuned by W.Dee, 2004/03/25 */ }; static TVP_Tables () { TVPTLG6InitLeadingZeroTable(); TVPTLG6InitGolombTable(); } static void TVPTLG6InitLeadingZeroTable () { /* table which indicates first set bit position + 1. */ /* this may be replaced by BSF (IA32 instrcution). */ for (int i = 0; i < TVP_TLG6_LeadingZeroTable_SIZE; i++) { int cnt = 0; int j; for(j = 1; j != TVP_TLG6_LeadingZeroTable_SIZE && 0 == (i & j); j <<= 1, cnt++); cnt++; if (j == TVP_TLG6_LeadingZeroTable_SIZE) cnt = 0; TVPTLG6LeadingZeroTable[i] = (byte)cnt; } } static void TVPTLG6InitGolombTable() { for (int n = 0; n < TVP_TLG6_GOLOMB_N_COUNT; n++) { int a = 0; for (int i = 0; i < 9; i++) { for (int j = 0; j < TVPTLG6GolombCompressed[n,i]; j++) TVPTLG6GolombBitLengthTable[a++,n] = (sbyte)i; } if(a != TVP_TLG6_GOLOMB_N_COUNT*2*128) throw new Exception ("Invalid data initialization"); /* THIS MUST NOT BE EXECUETED! */ /* (this is for compressed table data check) */ } } } void TVPTLG6DecodeGolombValuesForFirst (uint[] pixelbuf, int pixel_count, byte[] bit_pool) { /* decode values packed in "bit_pool". values are coded using golomb code. "ForFirst" function do dword access to pixelbuf, clearing with zero except for blue (least siginificant byte). */ int bit_pool_index = 0; int n = TVP_TLG6_GOLOMB_N_COUNT - 1; /* output counter */ int a = 0; /* summary of absolute values of errors */ int bit_pos = 1; bool zero = 0 == (bit_pool[bit_pool_index] & 1); for (int pixel = 0; pixel < pixel_count; ) { /* get running count */ int count; { uint t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; int b = TVP_Tables.TVPTLG6LeadingZeroTable[t & (TVP_TLG6_LeadingZeroTable_SIZE-1)]; int bit_count = b; while (0 == b) { bit_count += TVP_TLG6_LeadingZeroTable_BITS; bit_pos += TVP_TLG6_LeadingZeroTable_BITS; bit_pool_index += bit_pos >> 3; bit_pos &= 7; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count += b; } bit_pos += b; bit_pool_index += bit_pos >> 3; bit_pos &= 7; bit_count --; count = 1 << bit_count; count += ((LittleEndian.ToInt32 (bit_pool, bit_pool_index) >> (bit_pos)) & (count-1)); bit_pos += bit_count; bit_pool_index += bit_pos >> 3; bit_pos &= 7; } if (zero) { /* zero values */ /* fill distination with zero */ do { pixelbuf[pixel++] = 0; } while (0 != --count); zero = !zero; } else { /* non-zero values */ /* fill distination with glomb code */ do { int k = TVP_Tables.TVPTLG6GolombBitLengthTable[a,n]; int v, sign; uint t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; int bit_count; int b; if (0 != t) { b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count = b; while (0 == b) { bit_count += TVP_TLG6_LeadingZeroTable_BITS; bit_pos += TVP_TLG6_LeadingZeroTable_BITS; bit_pool_index += bit_pos >> 3; bit_pos &= 7; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count += b; } bit_count --; } else { bit_pool_index += 5; bit_count = bit_pool[bit_pool_index-1]; bit_pos = 0; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index); b = 0; } v = (int)((bit_count << k) + ((t >> b) & ((1<>= 1; a += v; pixelbuf[pixel++] = (byte)((v ^ sign) + sign + 1); bit_pos += b; bit_pos += k; bit_pool_index += bit_pos >> 3; bit_pos &= 7; if (--n < 0) { a >>= 1; n = TVP_TLG6_GOLOMB_N_COUNT - 1; } } while (0 != --count); zero = !zero; } } } void TVPTLG6DecodeGolombValues (uint[] pixelbuf, int offset, int pixel_count, byte[] bit_pool) { /* decode values packed in "bit_pool". values are coded using golomb code. */ uint mask = (uint)~(0xff << offset); int bit_pool_index = 0; int n = TVP_TLG6_GOLOMB_N_COUNT - 1; /* output counter */ int a = 0; /* summary of absolute values of errors */ int bit_pos = 1; bool zero = 0 == (bit_pool[bit_pool_index] & 1); for (int pixel = 0; pixel < pixel_count; ) { /* get running count */ int count; { uint t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; int b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; int bit_count = b; while (0 == b) { bit_count += TVP_TLG6_LeadingZeroTable_BITS; bit_pos += TVP_TLG6_LeadingZeroTable_BITS; bit_pool_index += bit_pos >> 3; bit_pos &= 7; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count += b; } bit_pos += b; bit_pool_index += bit_pos >> 3; bit_pos &= 7; bit_count --; count = 1 << bit_count; count += (int)((LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> (bit_pos)) & (count-1)); bit_pos += bit_count; bit_pool_index += bit_pos >> 3; bit_pos &= 7; } if (zero) { /* zero values */ /* fill distination with zero */ do { pixelbuf[pixel++] &= mask; } while (0 != --count); zero = !zero; } else { /* non-zero values */ /* fill distination with glomb code */ do { int k = TVP_Tables.TVPTLG6GolombBitLengthTable[a,n]; int v, sign; uint t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; int bit_count; int b; if (0 != t) { b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count = b; while (0 == b) { bit_count += TVP_TLG6_LeadingZeroTable_BITS; bit_pos += TVP_TLG6_LeadingZeroTable_BITS; bit_pool_index += bit_pos >> 3; bit_pos &= 7; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index) >> bit_pos; b = TVP_Tables.TVPTLG6LeadingZeroTable[t&(TVP_TLG6_LeadingZeroTable_SIZE-1)]; bit_count += b; } bit_count --; } else { bit_pool_index += 5; bit_count = bit_pool[bit_pool_index-1]; bit_pos = 0; t = LittleEndian.ToUInt32 (bit_pool, bit_pool_index); b = 0; } v = (int)((bit_count << k) + ((t >> b) & ((1<>= 1; a += v; uint c = (uint)((pixelbuf[pixel] & mask) | (uint)((byte)((v ^ sign) + sign + 1) << offset)); pixelbuf[pixel++] = c; bit_pos += b; bit_pos += k; bit_pool_index += bit_pos >> 3; bit_pos &= 7; if (--n < 0) { a >>= 1; n = TVP_TLG6_GOLOMB_N_COUNT - 1; } } while (0 != --count); zero = !zero; } } } } internal class TagsParser { byte[] m_tags; Dictionary> m_map = new Dictionary>(); int m_offset; public TagsParser (byte[] tags, int offset) { m_tags = tags; m_offset = offset; } public bool Parse () { int length = LittleEndian.ToInt32 (m_tags, m_offset); m_offset += 4; if (length <= 0 || length > m_tags.Length - m_offset) return false; while (m_offset < m_tags.Length) { int key_len = ParseInt(); if (key_len < 0) return false; int key; switch (key_len) { case 1: key = m_tags[m_offset]; break; case 2: key = LittleEndian.ToUInt16 (m_tags, m_offset); break; case 4: key = LittleEndian.ToInt32 (m_tags, m_offset); break; default: return false; } m_offset += key_len + 1; int value_len = ParseInt(); if (value_len < 0) return false; m_map[key] = Tuple.Create (m_offset, value_len); m_offset += value_len + 1; } return m_map.Count > 0; } int ParseInt () { int colon = Array.IndexOf (m_tags, (byte)':', m_offset); if (-1 == colon) return -1; var len_str = Encoding.ASCII.GetString (m_tags, m_offset, colon-m_offset); m_offset = colon + 1; return Int32.Parse (len_str); } public int GetInt (int key) { var val = m_map[key]; switch (val.Item2) { case 0: return 0; case 1: return m_tags[val.Item1]; case 2: return LittleEndian.ToUInt16 (m_tags, val.Item1); case 4: return LittleEndian.ToInt32 (m_tags, val.Item1); default: throw new InvalidFormatException(); } } public string GetString (int key) { var val = m_map[key]; return Encodings.cp932.GetString (m_tags, val.Item1, val.Item2); } } }