//! \file ImageGRP.cs //! \date 2018 Mar 30 //! \brief BOM image format. // // Copyright (C) 2018 by morkt // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS // IN THE SOFTWARE. // using System.ComponentModel.Composition; using System.IO; using System.Windows.Media; namespace GameRes.Formats.Bom { internal class GrpMetaData : ImageMetaData { public int Stride; public int Type; public uint DataOffset; } [Export(typeof(ImageFormat))] public class GrpFormat : ImageFormat { public override string Tag { get { return "GRP/RG"; } } public override string Description { get { return "BOM image format"; } } public override uint Signature { get { return 0x01004752; } } // 'RG' public override ImageMetaData ReadMetaData (IBinaryStream file) { var header = file.ReadHeader (0x24); if ((header[6] & 0x80) == 0) return null; int bpp; switch (header[4]) { case 5: bpp = 4; break; case 4: bpp = 8; break; case 3: bpp = 16; break; case 2: bpp = 24; break; case 1: bpp = 32; break; default: return null; } return new GrpMetaData { Width = header.ToUInt16 (8), Height = header.ToUInt16 (10), BPP = bpp, Stride = header.ToInt32 (0x18), Type = header[4], DataOffset = header.ToUInt16 (0x22), }; } public override ImageData Read (IBinaryStream file, ImageMetaData info) { var reader = new GrpReader (file, (GrpMetaData)info); var pixels = reader.Unpack(); return ImageData.Create (info, reader.Format, null, pixels); } public override void Write (Stream file, ImageData image) { throw new System.NotImplementedException ("GrpFormat.Write not implemented"); } } internal class GrpReader { IBinaryStream m_input; GrpMetaData m_info; byte[] m_output; public GrpReader (IBinaryStream file, GrpMetaData info) { m_input = file; m_info = info; m_output = new byte[m_info.Stride * (int)m_info.Height]; } int m_dst; public byte[] Unpack () { m_input.Position = m_info.DataOffset; uint size = m_input.ReadUInt32(); if ((size & 0x80000000) != 0) { m_input.Read (m_output, 0, m_output.Length); return m_output; } Init(); var frame = new byte[0x1000]; for (int i = 0; i < 0xFC0; ++i) frame[i] = 0x20; int frame_pos = 0xFC0; m_dst = 0; while (m_dst < m_output.Length) { int ctl = sub_408BE0(); if (ctl >= 0x100) { v5 = 0; int count = ctl - 0xFD; int offset = (frame_pos - sub_408E50() - 1) & 0xFFF; for (int i = 0; i < count; ++i) { byte v = frame[(offset + i) & 0xFFF]; PutByte (v); frame[frame_pos++ & 0xFFF] = v; } } else { PutByte (m_dst, ctl); frame[frame_pos++ & 0xFFF] = (byte)ctl; } } return m_output; } int dword_6FFE54; int dword_6FF460; int dword_709868; int dword_703E64; int m_cached_bits; void Init () { dword_6FFE54 = -1; dword_6FF460 = 0; dword_709868 = 0; dword_703E64 = 0; int v0 = 0; for (int i = 0; i < 318; ++i) { dword_6FF464[i] = 1; dword_70A258[i] = i; dword_703E68[i] = i + 635; } int v1 = 0; int v2 = 318; for (int i = 0; i <= 316; ++i) { v4 = dword_6FF464[v1] + dword_6FF468[v1]; dword_709870[v1] = v2; dword_6FF95C[i] = v4; dword_704360[i] = v1; dword_70986C[v1] = v2; v1 += 2; ++v2; } dword_70A254 = 0; m_cached_bits = 0; byte_7137B4 = 0; m_bits = 0; dword_7137B0 = 0; dword_6FFE50 = 0xFFFF; } int sub_408BE0 () { for (int i = dword_704850; i < 635; i = dword_703E68[GetNextBit() + i]) ; int ctl = i - 635; sub_408C80 (ctl); return ctl; } int m_bits; int GetNextBit () { if (m_cached_bits <= 8) { byte v = m_input.ReadUInt8(); m_bits |= (v << (8 - m_cached_bits)); m_cached_bits += 8; } m_bits <<= 1; m_cached_bits--; return (m_bits >> 16) & 1; } void sub_408C80 (int a1) { unsigned int v2; // ecx@4 unsigned int v3; // esi@4 int *v4; // ecx@5 unsigned int v5; // eax@6 int v6; // eax@7 int v7; // ecx@7 int v8; // eax@7 int v9; // esi@9 if (dword_6FFE4C == 0x8000) sub_408D50(); int v1 = dword_70A258[a1]; do { v2 = dword_6FF464[v1] + 1; dword_6FF464[v1] = v2; v3 = v2; if ( v2 > dword_6FF468[v1] ) { v4 = &dword_6FF46C[v1 + 1]; if ( v3 > dword_6FF46C[v1] ) { do { v5 = *v4; ++v4; } while ( v3 > v5 ); } dword_6FF464[v1] = *(v4 - 2); *(v4 - 2) = v3; v6 = v4 - dword_6FF464; v7 = dword_703E68[v1]; v8 = v6 - 2; dword_70986C[v7] = v8; if ( v7 < 635 ) dword_709870[v7] = v8; v9 = dword_703E68[v8]; dword_703E68[v8] = v7; dword_70986C[v9] = v1; if ( v9 < 635 ) dword_709870[v9] = v1; dword_703E68[v1] = v9; v1 = v8; } v1 = dword_70986C[v1]; } while (v1 != 0); } void PutByte (int a1) { if (dword_6FF460 != 0) { int v1 = (a1 & 0x7F) << (7 * dword_6FF460 - 7); dword_709868 += v1; if ((a1 & 0x80) != 0) { ++dword_6FF460; } else { int count = dword_709868; dword_6FF460 = 0; while (count --> 0 && m_dst < m_output.Length) { m_output[m_dst++] = (byte)dword_6FFE54; } dword_6FFE54 = -1; } } else if (dword_6FFE54 >= 0) { if (dword_6FFE54 == a1) { dword_6FF460 = 1; dword_709868 = 0; } else { m_output[m_dst++] = (byte)dword_6FFE54; dword_6FFE54 = a1; } } else { dword_6FF460 = 0; dword_6FFE54 = a1; } } } }