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https://github.com/crskycode/GARbro.git
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(WBM): image compression variations.
This commit is contained in:
morkt
parent
1cf89e33b6
commit
da15b1f31f
@ -2,7 +2,7 @@
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//! \date Thu Jul 09 20:59:09 2015
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//! \brief Wild Bug's image format.
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//
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// Copyright (C) 2015 by morkt
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// Copyright (C) 2015-2016 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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@ -136,6 +136,10 @@ namespace GameRes.Formats.WildBug
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format = PixelFormats.Bgr555;
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pixel_size = 2;
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break;
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case 8:
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format = PixelFormats.Indexed8;
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pixel_size = 1;
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break;
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default:
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throw new NotSupportedException ("Not supported WBM bitdepth");
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}
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@ -144,6 +148,18 @@ namespace GameRes.Formats.WildBug
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var pixels = reader.Unpack (stride, pixel_size, section.DataFormat);
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if (null == pixels)
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throw new InvalidFormatException();
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if (8 == meta.BPP)
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{
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section = WpxSection.Find (meta.Header, 0x12, meta.EntryCount, meta.EntrySize);
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if (null == section)
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return ImageData.Create (info, PixelFormats.Gray8, null, pixels, stride);
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reader = new WbmReader (stream, section);
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var palette_data = reader.Unpack (48, 3, section.DataFormat);
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var palette = CreatePalette (palette_data);
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return ImageData.Create (info, PixelFormats.Indexed8, palette, pixels, stride);
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}
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if (meta.BPP < 24)
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return ImageData.Create (info, format, null, pixels, stride);
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section = WpxSection.Find (meta.Header, 0x13, meta.EntryCount, meta.EntrySize);
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@ -183,6 +199,18 @@ namespace GameRes.Formats.WildBug
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{
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throw new System.NotImplementedException ("WbmFormat.Write not implemented");
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}
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static BitmapPalette CreatePalette (byte[] palette_data)
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{
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int colors = Math.Min (palette_data.Length/3, 0x100);
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var palette = new Color[0x100];
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for (int i = 0; i < colors; ++i)
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{
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int c = i * 3;
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palette[i] = Color.FromRgb (palette_data[c], palette_data[c+1], palette_data[c+2]);
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}
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return new BitmapPalette (palette);
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}
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}
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internal class WbmReader : WpxDecoder
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@ -237,14 +265,16 @@ namespace GameRes.Formats.WildBug
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}
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}
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int m_version;
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int m_condition;
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public byte[] Unpack (int stride, int pixel_size, int flags) // sub_40919C
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{
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int[] offset_table = new int[8];
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GenerateOffsetTableV2 (offset_table, stride, pixel_size);
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for (m_condition = 1; m_condition >= 0; --m_condition)
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for (m_version = 2; m_version >= 0; --m_version)
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{
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m_condition = m_version > 0 ? 1 : 0;
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try
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{
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ResetInput();
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@ -281,16 +311,16 @@ namespace GameRes.Formats.WildBug
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}
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catch
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{
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if (0 == m_condition)
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if (0 == m_version)
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throw;
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}
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GenerateOffsetTableV1 (offset_table, stride, pixel_size);
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if (1 == m_version)
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GenerateOffsetTableV1 (offset_table, stride, pixel_size);
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}
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return null;
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}
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byte[] UnpackVD (byte[] a4, int[] offset_table, int pixel_size) // 0x0F format
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// int sub_460470(void *dst, const void *src, unsigned __int8 *ref_table, unsigned int packed_size, int *offset_table, int unpacked_size, unsigned int pixel_size)
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{
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byte[] v47 = BuildTable(); //sub_46C26C();
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int min_count = 1 == pixel_size ? 2 : 1;
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@ -448,11 +478,60 @@ namespace GameRes.Formats.WildBug
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byte[] UnpackV9 (int[] offset_table, int pixel_size) // 0x09 format
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{
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throw new NotImplementedException();
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int min_count = 1 == pixel_size ? 2 : 1;
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m_available = FillBuffer();
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if (0 == m_available)
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return null;
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int step = (pixel_size + 3) & -4;
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if (m_available < step)
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return null;
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Buffer.BlockCopy (m_buffer, 0, m_output, 0, pixel_size);
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int dst = pixel_size;
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int remaining = m_output.Length - pixel_size;
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m_current = pixel_size + (-pixel_size & 3);
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m_bits = m_buffer[m_current++];
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m_bit_count = 8;
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while (remaining > 0)
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{
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while (0 == (GetNextBit() ^ m_condition))
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{
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m_output[dst++] = ReadNext();
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--remaining;
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if (0 == remaining)
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return m_output;
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}
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int count, src_offset;
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if (GetNextBit() != 0)
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{
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src_offset = dst - 1 - ReadNext();
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count = 2;
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}
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else
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{
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count = min_count;
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int v35 = GetNextBit();
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v35 += v35 + GetNextBit();
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v35 += v35 + GetNextBit();
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src_offset = dst - offset_table[v35];
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}
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if (GetNextBit() == 0)
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{
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count += ReadCount();
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}
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if (remaining < count)
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return null;
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Binary.CopyOverlapped (m_output, src_offset, dst, count);
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dst += count;
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remaining -= count;
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}
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return m_output;
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}
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byte[] UnpackV5 (byte[] a4, int[] offset_table, int pixel_size) // 0x07 format
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// int sub_409AF4 (void *a1, FILE *stream, void *ptr, void *a4, unsigned int m_packed_size, int *offset_table, int unpacked_size, unsigned int pixel_size)
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{
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byte[] v46 = BuildTable();
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int min_count = 1 == pixel_size ? 2 : 1;
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@ -506,21 +585,50 @@ namespace GameRes.Formats.WildBug
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if (0 == remaining)
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return m_output;
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}
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int src_offset;
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int count;
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if (GetNextBit() != 0)
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int count, src_offset;
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if (m_version > 1)
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{
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count = min_count;
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int v32 = GetNextBit() << 2;
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v32 |= GetNextBit() << 1;
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v32 |= GetNextBit();
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src_offset = dst - offset_table[v32];
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if (GetNextBit() != 0)
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{
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int v35;
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if (GetNextBit() != 0)
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{
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v35 = ReadNext();
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count = 2;
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}
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else
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{
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v35 = ReadNext();
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v35 |= ReadNext() << 8;
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count = 3;
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}
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src_offset = dst - 1 - v35;
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}
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else
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{
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count = min_count;
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int v35 = GetNextBit();
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v35 += v35 + GetNextBit();
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v35 += v35 + GetNextBit();
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src_offset = dst - offset_table[v35];
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}
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}
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else
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{
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byte v35 = ReadNext();
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count = 2;
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src_offset = dst - 1 - v35;
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if (GetNextBit() != 0)
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{
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count = min_count;
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int v32 = GetNextBit() << 2;
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v32 |= GetNextBit() << 1;
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v32 |= GetNextBit();
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src_offset = dst - offset_table[v32];
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}
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else
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{
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byte v35 = ReadNext();
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count = 2;
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src_offset = dst - 1 - v35;
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}
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}
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if (0 == GetNextBit())
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{
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@ -536,7 +644,6 @@ namespace GameRes.Formats.WildBug
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}
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byte[] UnpackV4 (byte[] a4, int[] offset_table, int pixel_size) // 0x06 format
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// signed int __cdecl sub_40B044(void *a1, FILE *stream, void *ptr, void *a4, unsigned int packed_size, int *offset_table, int unpacked_size, unsigned int pixel_size)
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{
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byte[] v48 = BuildTable();
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int min_count = 1 == pixel_size ? 2 : 1;
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@ -615,7 +722,6 @@ namespace GameRes.Formats.WildBug
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}
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byte[] UnpackV3 (byte[] a4, int[] offset_table, int pixel_size) // 0x03 format
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// int sub_409F70(void *a1, FILE *stream, void *ptr, void *a4, unsigned int packed_size, int *offset_table, int unpacked_size, unsigned int pixel_size)
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{
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int min_count = 1 == pixel_size ? 2 : 1;
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@ -660,19 +766,48 @@ namespace GameRes.Formats.WildBug
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return m_output;
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}
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int count, src_offset;
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if (GetNextBit() != 0)
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if (m_version > 1)
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{
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count = min_count;
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int v28 = GetNextBit() << 1;
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v28 |= GetNextBit();
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v28 <<= 1;
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v28 |= GetNextBit();
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src_offset = dst - offset_table[v28];
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if (GetNextBit() != 0)
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{
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if (GetNextBit() != 0)
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{
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count = 2;
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src_offset = ReadNext();
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}
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else
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{
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count = 3;
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src_offset = ReadNext();
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src_offset |= ReadNext() << 8;
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}
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src_offset = dst - 1 - src_offset;
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}
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else
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{
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count = min_count;
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int v28 = GetNextBit();
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v28 += v28 + GetNextBit();
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v28 += v28 + GetNextBit();
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src_offset = dst - offset_table[v28];
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}
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}
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else
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{
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count = 2;
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src_offset = dst - 1 - ReadNext();
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if (GetNextBit() != 0)
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{
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count = min_count;
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int v28 = GetNextBit() << 1;
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v28 |= GetNextBit();
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v28 <<= 1;
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v28 |= GetNextBit();
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src_offset = dst - offset_table[v28];
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}
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else
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{
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count = 2;
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src_offset = dst - 1 - ReadNext();
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}
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}
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if (GetNextBit() == 0)
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{
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@ -688,9 +823,7 @@ namespace GameRes.Formats.WildBug
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}
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byte[] UnpackV2 (byte[] a4, int[] offset_table, int pixel_size) // 0x02 format
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// int sub_40B458(void *a1, FILE *stream, unsigned __int8 *ptr, void *a4, unsigned int packed_size, int *offset_table, int unpacked_size, unsigned int a8)
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{
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byte[] v48 = BuildTable();
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int min_count = 1 == pixel_size ? 2 : 1;
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m_available = FillBuffer();
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if (0 == m_available)
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@ -756,7 +889,6 @@ namespace GameRes.Formats.WildBug
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}
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byte[] UnpackV1 (int[] offset_table, int pixel_size) // 0x01 format
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//int sub_40A3C4(void *a1, FILE *stream, const void *ptr, unsigned int packed_size, int *offset_table, int unpacked_size, unsigned int pixel_size)
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{
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int min_count = 1 == pixel_size ? 2 : 1;
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m_available = FillBuffer();
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@ -784,18 +916,47 @@ namespace GameRes.Formats.WildBug
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return m_output;
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}
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int count, src_offset;
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if (GetNextBit() != 0)
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if (m_version > 1)
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{
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count = min_count;
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int v14 = GetNextBit() << 2;
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v14 |= GetNextBit() << 1;
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v14 |= GetNextBit();
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src_offset = dst - offset_table[v14];
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if (GetNextBit() != 0)
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{
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if (GetNextBit() != 0)
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{
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src_offset = ReadNext();
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count = 2;
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}
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else
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{
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src_offset = ReadNext();
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src_offset |= ReadNext() << 8;
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count = 3;
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}
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src_offset = dst - 1 - src_offset;
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}
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else
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{
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count = min_count;
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int v20 = GetNextBit();
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v20 += v20 + GetNextBit();
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v20 += v20 + GetNextBit();
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src_offset = dst - offset_table[v20];
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}
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}
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else
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{
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count = 2;
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src_offset = dst - 1 - ReadNext();
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if (GetNextBit() != 0)
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{
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count = min_count;
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int v14 = GetNextBit() << 2;
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v14 |= GetNextBit() << 1;
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v14 |= GetNextBit();
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src_offset = dst - offset_table[v14];
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}
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else
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{
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count = 2;
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src_offset = dst - 1 - ReadNext();
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}
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}
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if (GetNextBit() == 0)
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{
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@ -811,7 +972,6 @@ namespace GameRes.Formats.WildBug
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}
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byte[] UnpackV0 (int[] offset_table, int pixel_size) // 0x00 format
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// int sub_40B83C(void *a1, FILE *stream, const void *ptr, unsigned int packed_size, int *a5, int unpacked_size, unsigned int pixel_size)
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{
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int min_count = 1 == pixel_size ? 2 : 1;
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m_available = FillBuffer();
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