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implemented CPZ2 archives and PB2 images.
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morkt
224
ArcFormats/Cmvs/ImagePB2.cs
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224
ArcFormats/Cmvs/ImagePB2.cs
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//! \file ImagePB2.cs
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//! \date Fri Dec 02 23:35:44 2016
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//! \brief Cvns engine image format.
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//
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// Copyright (C) 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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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Windows.Media;
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namespace GameRes.Formats.Purple
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{
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internal class Pb2MetaData : PbMetaData
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{
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public int Offset1;
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public int Offset2;
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public int FrameCount;
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}
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[Export(typeof(ImageFormat))]
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public class Pb2Format : ImageFormat
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{
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public override string Tag { get { return "PB2"; } }
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public override string Description { get { return "CVNS engine image format"; } }
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public override uint Signature { get { return 0x41324250; } } // 'PB2A'
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x20);
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file.Position = file.Length-27;
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var key = file.ReadBytes (27);
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for (int i = 8; i < 0x20; i += 2)
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{
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header[i] ^= key[24];
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header[i] -= key[i-8];
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header[i+1] ^= key[25];
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header[i+1] -= key[i-7];
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}
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return new Pb2MetaData
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{
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InputSize = header.ToInt32 (4),
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FrameCount = header.ToInt32 (8),
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Type = header.ToUInt16 (0x10),
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Width = header.ToUInt16 (0x12),
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Height = header.ToUInt16 (0x14),
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BPP = header.ToUInt16 (0x16),
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Offset1 = header.ToInt32 (0x18),
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Offset2 = header.ToInt32 (0x1C),
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};
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new Pb2Reader (file, (Pb2MetaData)info);
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reader.Unpack();
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return ImageData.Create (info, reader.Format, null, reader.Data);
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("Pb2Format.Write not implemented");
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}
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}
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internal sealed class Pb2Reader : PbReaderBase
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{
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int m_offset1;
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int m_offset2;
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int m_frame_count;
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public Pb2Reader (IBinaryStream input, Pb2MetaData info) : base (info)
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{
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if (32 == info.BPP || 4 == info.Type || 6 == info.Type)
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Format = PixelFormats.Bgra32;
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else
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Format = PixelFormats.Bgr24;
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m_input = new byte[input.Length];
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input.Read (m_input, 0, m_input.Length);
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if (4 == info.Type || 6 == info.Type)
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m_stride = (int)info.Width * 4;
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else
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m_stride = (int)m_info.Width * info.BPP / 8;
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m_offset1 = info.Offset1;
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m_offset2 = info.Offset2;
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m_frame_count = info.FrameCount;
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}
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public void Unpack ()
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{
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switch (m_info.Type)
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{
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case 2: UnpackV2(); break;
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case 4: UnpackJbp (0x20, m_offset1); break;
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case 6: UnpackV6(); break;
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case 1:
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case 3:
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case 5:
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case 7:
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default: throw new NotSupportedException(string.Format ("PB2 v{0} images not supported", m_info.Type));
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}
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}
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void UnpackV2 ()
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{
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m_output = new byte[m_stride * (int)m_info.Height];
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const int block_size = 8;
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byte[] block_data = null;
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int pixel_size = m_info.BPP / 8;
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int width = (int)m_info.Width;
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int height = (int)m_info.Height;
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int w_block_count = (width + block_size - 1) / block_size;
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int h_block_count = (height + block_size - 1) / block_size;
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int ctl_offset = m_offset1 + pixel_size * 4;
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int data_offset = m_offset2 + pixel_size * 4;
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for (int c = 0; c < pixel_size; ++c)
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{
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int bit_src = ctl_offset + m_input.ToInt32 (ctl_offset) + m_input.ToInt32 (ctl_offset+4) + 12;
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int unpacked_size = m_input.ToInt32 (ctl_offset+8);
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if (null == block_data || block_data.Length < unpacked_size)
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block_data = new byte[unpacked_size];
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LzssResetFrame();
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LzssUnpack (bit_src, data_offset, block_data, unpacked_size);
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byte bit_mask = 0x80;
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int block_src = 0;
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bit_src = ctl_offset + 12;
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int src = ctl_offset + m_input.ToInt32 (ctl_offset) + 12;
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int dst = c;
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for (int y = 0, lBlockY = 0; lBlockY < h_block_count; y += block_size, lBlockY++)
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{
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int dst_origin = dst;
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int max_height = Math.Min (height - y, block_size);
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for (int x = 0, lBlockX = 0; lBlockX < w_block_count; x += block_size, lBlockX++)
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{
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if (0 == bit_mask)
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{
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bit_src++;
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bit_mask = 0x80;
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}
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int dst3 = dst_origin;
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int max_width = Math.Min (width - x, block_size);
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if (0 != (bit_mask & m_input[bit_src]))
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{
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byte b = m_input[src++];
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for (int i = 0 ; i < max_height; i++)
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{
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for (int j = 0 ; j < max_width; j++)
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m_output[dst3 + j * pixel_size] = b;
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dst3 += m_stride;
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}
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}
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else
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{
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for (int i = 0 ; i < max_height; i++)
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{
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for (int j = 0 ; j < max_width; j++)
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m_output[dst3 + j * pixel_size] = block_data[block_src++];
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dst3 += m_stride;
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}
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}
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dst_origin += block_size * pixel_size;
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bit_mask >>= 1;
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}
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dst += m_stride * block_size;
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}
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ctl_offset += m_input.ToInt32 (m_offset1 + c * 4);
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data_offset += m_input.ToInt32 (m_offset2 + c * 4);
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}
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}
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void UnpackV6 ()
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{
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int channel_size = (int)m_info.Width * (int)m_info.Height;
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m_output = new byte[4 * channel_size];
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int src = Array.IndexOf<byte> (m_input, 0, 0x24);
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src = (src + 3) & ~3;
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byte[][] channels = new byte[4][];
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for (int i = 0 ; i < 4; ++i)
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{
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channels[i] = new byte[channel_size];
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int bit_src = src + 0x20 + m_input.ToInt32 (src + i * 8);
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int data_src = src + 0x20 + m_input.ToInt32 (src + i * 8 + 4);
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LzssResetFrame();
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LzssUnpack (bit_src, data_src, channels[i], channel_size);
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}
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int dst = 0;
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for (int i = 0; i < channel_size; ++i)
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{
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m_output[dst ] = channels[0][i];
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m_output[dst+1] = channels[1][i];
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m_output[dst+2] = channels[2][i];
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m_output[dst+3] = channels[3][i];
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byte d1 = (byte)(m_output[dst+2] ^ m_output[dst+3]);
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byte d2 = (byte)(m_output[dst+1] ^ d1);
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m_output[dst+2] = d1;
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m_output[dst+1] = d2;
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m_output[dst ] ^= d2;
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dst += 4;
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}
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}
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}
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}
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