Public-Mirror/GARbro-mirror
1
0
Fork 0
mirror of https://github.com/crskycode/GARbro.git synced 2024-12-24 03:44:13 +08:00
Code Issues Projects Releases Wiki Activity

(GrFormat): rewritten with LzssStream.

Browse Source
This commit is contained in:
morkt 2016-10-12 06:36:33 +04:00
parent 88731c8b64
commit 5b3c4e6abe
1 changed files with 18 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
ArcFormats/Eagls/ImageGR.cs
View File

@ -2,7 +2,7 @@
//! \date Fri May 15 04:26:58 2015
//! \brief EAGLS system compressed bitmap.
//
// Copyright (C) 2015 by morkt
// Copyright (C) 2015-2016 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
@ -47,17 +47,18 @@ namespace GameRes.Formats.Eagls
public override ImageMetaData ReadMetaData (Stream stream)
{
using (var reader = new LzssReader (stream, (int)stream.Length, 0x26)) // BMP header
using (var lzs = new LzssStream (stream, LzssMode.Decompress, true))
{
reader.Unpack();
var bmp = reader.Data;
if (bmp[0] != 'B' || bmp[1] != 'M')
if (lzs.ReadByte() != 'B' || lzs.ReadByte() != 'M')
return null;
int file_size = LittleEndian.ToInt32 (bmp, 2);
int width = LittleEndian.ToInt32 (bmp, 0x12);
int height = LittleEndian.ToInt32 (bmp, 0x16);
int bpp = LittleEndian.ToInt16 (bmp, 0x1c);
int image_size = LittleEndian.ToInt32 (bmp, 0x22);
var bmp = new byte[0x26];
if (0x24 != lzs.Read (bmp, 2, 0x24))
return null;
int file_size = LittleEndian.ToInt32 (bmp, 2);
int width = LittleEndian.ToInt32 (bmp, 0x12);
int height = LittleEndian.ToInt32 (bmp, 0x16);
int bpp = LittleEndian.ToInt16 (bmp, 0x1C);
int image_size = LittleEndian.ToInt32 (bmp, 0x22);
if (0 == image_size)
image_size = width * height * (bpp / 8);
return new GrMetaData
@ -73,20 +74,17 @@ namespace GameRes.Formats.Eagls
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = (GrMetaData)info;
using (var reader = new LzssReader (stream, (int)stream.Length, meta.UnpackedSize+2))
using (var bmp = new LzssStream (stream, LzssMode.Decompress, true))
{
reader.Unpack();
if (32 != info.BPP)
using (var bmp = new MemoryStream (reader.Data))
return base.Read (bmp, info);
return base.Read (bmp, info);
int stride = (int)info.Width*4;
var pixels = new byte[stride*info.Height];
int dst = 0;
int offset = 0x36;
for (int src = stride*((int)info.Height-1); src >= 0; src -= stride)
var pixels = new byte[Math.Max (0x36, stride*info.Height)];
bmp.Read (pixels, 0, 0x36); // skip header
for (int y = (int)info.Height - 1; y >= 0; --y)
{
Buffer.BlockCopy (reader.Data, offset+src, pixels, dst, stride);
dst += stride;
int dst = y * stride;
bmp.Read (pixels, dst, stride);
}
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
}