From a67f319694f6f95c322a3d799c53c48bb30e03c3 Mon Sep 17 00:00:00 2001 From: morkt Date: Tue, 17 Nov 2015 21:31:09 +0400 Subject: [PATCH] implemented Adobe Photoshop PSD images. --- ArcFormats/ArcFormats.csproj | 1 + ArcFormats/ImagePSD.cs | 250 +++++++++++++++++++++++++++++++++++ 2 files changed, 251 insertions(+) create mode 100644 ArcFormats/ImagePSD.cs diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj index 62839f43..40710671 100644 --- a/ArcFormats/ArcFormats.csproj +++ b/ArcFormats/ArcFormats.csproj @@ -68,6 +68,7 @@ + diff --git a/ArcFormats/ImagePSD.cs b/ArcFormats/ImagePSD.cs new file mode 100644 index 00000000..c1399cb2 --- /dev/null +++ b/ArcFormats/ImagePSD.cs @@ -0,0 +1,250 @@ +//! \file ImagePSD.cs +//! \date Tue Nov 17 18:22:36 2015 +//! \brief Adobe Photoshop file format implementation. +// +// Copyright (C) 2015 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 GameRes.Utility; +using System; +using System.ComponentModel.Composition; +using System.IO; +using System.Text; +using System.Windows.Media; +using System.Windows.Media.Imaging; + +namespace GameRes.Formats.Adobe +{ + internal class PsdMetaData : ImageMetaData + { + public int Channels; + public int Mode; + } + + [Export(typeof(ImageFormat))] + public class PsdFormat : ImageFormat + { + public override string Tag { get { return "PSD"; } } + public override string Description { get { return "Adobe Photoshop image format"; } } + public override uint Signature { get { return 0x53504238; } } // '8BPS' + + public override ImageMetaData ReadMetaData (Stream stream) + { + var header = new byte[26]; + if (header.Length != stream.Read (header, 0, header.Length)) + return null; + int version = BigEndian.ToInt16 (header, 4); + if (1 != version) + return null; + int channels = BigEndian.ToInt16 (header, 0x0C); + if (channels < 1 || channels > 56) + return null; + uint height = BigEndian.ToUInt32 (header, 0x0E); + uint width = BigEndian.ToUInt32 (header, 0x12); + if (width < 1 || width > 30000 || height < 1 || height > 30000) + return null; + int bpc = BigEndian.ToInt16 (header, 0x16); + return new PsdMetaData + { + Width = width, + Height = height, + Channels = channels, + BPP = channels * bpc, + Mode = BigEndian.ToInt16 (header, 0x18), + }; + } + + public override ImageData Read (Stream stream, ImageMetaData info) + { + var meta = (PsdMetaData)info; + using (var reader = new PsdReader (stream, meta)) + { + reader.Unpack(); + return ImageData.Create (info, reader.Format, reader.Palette, reader.Data); + } + } + + public override void Write (Stream file, ImageData image) + { + throw new System.NotImplementedException ("PsdFormat.Write not implemented"); + } + } + + internal class PsdReader : IDisposable + { + BinaryReader m_input; + PsdMetaData m_info; + byte[] m_output; + int m_channel_size; + + public PixelFormat Format { get; private set; } + public BitmapPalette Palette { get; private set; } + public byte[] Data { get { return m_output; } } + + public PsdReader (Stream input, PsdMetaData info) + { + m_info = info; + m_input = new BinaryReader (input, Encoding.Unicode, true); + int bpc = m_info.BPP / m_info.Channels; + switch (m_info.Mode) + { + case 3: + if (8 != bpc) + throw new NotSupportedException(); + if (3 == m_info.Channels) + Format = PixelFormats.Bgr24; + else if (4 == m_info.Channels) + Format = PixelFormats.Bgra32; + else + throw new NotSupportedException(); + break; +// case 2: Format = PixelFormats.Indexed8; break; + case 1: + if (8 == bpc) + Format = PixelFormats.Gray8; + else if (16 == bpc) + Format = PixelFormats.Gray16; + else + throw new NotSupportedException(); + break; + case 0: Format = PixelFormats.BlackWhite; break; + default: + throw new NotImplementedException ("Not supported PSD color mode"); + } + m_channel_size = (int)m_info.Height * (int)m_info.Width * bpc / 8; + } + + public void Unpack () + { + m_input.BaseStream.Position = 0x1A; + int color_data_length = Binary.BigEndian (m_input.ReadInt32()); + long next_pos = m_input.BaseStream.Position + color_data_length; + if (0 != color_data_length) + { + if (8 == m_info.BPP) + ReadPalette (color_data_length); + m_input.BaseStream.Position = next_pos; + } + next_pos += 4 + Binary.BigEndian (m_input.ReadInt32()); + m_input.BaseStream.Position = next_pos; // skip Image Resources + next_pos += 4 + Binary.BigEndian (m_input.ReadInt32()); + m_input.BaseStream.Position = next_pos; // skip Layer and Mask Information + + int compression = Binary.BigEndian (m_input.ReadInt16()); + int remaining = checked((int)(m_input.BaseStream.Length - m_input.BaseStream.Position)); + byte[] pixels; + if (0 == compression) + pixels = m_input.ReadBytes (remaining); + else if (1 == compression) + pixels = UnpackRLE(); + else + throw new NotSupportedException ("PSD files with ZIP compression not supported"); + + if (1 == m_info.Channels) + { + m_output = pixels; + return; + } + int channels = Math.Min (4, m_info.Channels); + m_output = new byte[channels * m_channel_size]; + int src = 0; + for (int ch = 0; ch < channels; ++ch) + { + int dst = ChannelMap[ch]; + for (int i = 0; i < m_channel_size; ++i) + { + m_output[dst] = pixels[src++]; + dst += channels; + } + } + } + + static readonly byte[] ChannelMap = { 2, 1, 0, 3 }; + + void ReadPalette (int palette_size) + { + var palette_data = m_input.ReadBytes (palette_size); + if (palette_data.Length != palette_size) + throw new EndOfStreamException(); + int colors = Math.Min (256, palette_size/3); + var palette = new Color[colors]; + for (int i = 0; i < colors; ++i) + { + int c = i * 3; + palette[i] = Color.FromRgb (palette_data[c], palette_data[c+1], palette_data[c+2]); + } + Palette = new BitmapPalette (palette); + } + + byte[] UnpackRLE () + { + var scanlines = new int[m_info.Channels, (int)m_info.Height]; + for (int ch = 0; ch < m_info.Channels; ++ch) + { + for (uint row = 0; row < m_info.Height; ++row) + scanlines[ch,row] = Binary.BigEndian (m_input.ReadInt16()); + } + var pixels = new byte[m_info.Channels * m_channel_size]; + int dst = 0; + for (int ch = 0; ch < m_info.Channels; ++ch) + { + for (uint row = 0; row < m_info.Height; ++row) + { + int line_count = scanlines[ch,row]; + int n = 0; + while (n < line_count) + { + int count = m_input.ReadSByte(); + ++n; + if (count >= 0) + { + ++count; + m_input.Read (pixels, dst, count); + dst += count; + n += count; + } + else if (count > -128) + { + count = 1 - count; + byte color = m_input.ReadByte(); + ++n; + for (int i = 0; i < count; ++i) + pixels[dst++] = color; + } + } + } + } + return pixels; + } + + #region IDisposable Members + bool _disposed = false; + public void Dispose () + { + if (!_disposed) + { + m_input.Dispose(); + _disposed = true; + } + } + #endregion + } +}