+++ /dev/null
-/*
-Copyright (C) 2001-2006, William Joseph.
-All Rights Reserved.
-
-This file is part of GtkRadiant.
-
-GtkRadiant is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-GtkRadiant is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#include "bmp.h"
-
-#include "ifilesystem.h"
-
-typedef unsigned char byte;
-
-#include "imagelib.h"
-#include "bytestreamutils.h"
-
-
-typedef unsigned char PaletteEntry[4];
-typedef struct
-{
- char id[2];
- unsigned long fileSize;
- unsigned long reserved0;
- unsigned long bitmapDataOffset;
- unsigned long bitmapHeaderSize;
- unsigned long width;
- unsigned long height;
- unsigned short planes;
- unsigned short bitsPerPixel;
- unsigned long compression;
- unsigned long bitmapDataSize;
- unsigned long hRes;
- unsigned long vRes;
- unsigned long colors;
- unsigned long importantColors;
- PaletteEntry palette[256];
-} BMPHeader_t;
-
-class ReadPixel8
-{
- PaletteEntry* m_palette;
-public:
- ReadPixel8(PaletteEntry* palette) : m_palette(palette)
- {
- }
- void operator()(PointerInputStream& inputStream, byte*& pixbuf) const
- {
- byte palIndex;
- inputStream.read(&palIndex, 1);
- *pixbuf++ = m_palette[palIndex][2];
- *pixbuf++ = m_palette[palIndex][1];
- *pixbuf++ = m_palette[palIndex][0];
- *pixbuf++ = 0xff;
- }
-};
-
-class ReadPixel16
-{
-public:
- void operator()(PointerInputStream& inputStream, byte*& pixbuf) const
- {
- unsigned short shortPixel;
- inputStream.read(reinterpret_cast<byte*>(&shortPixel), sizeof(unsigned short)); //!\todo Is this endian safe?
- *pixbuf++ = static_cast<byte>(shortPixel & (31 << 10)) >> 7;
- *pixbuf++ = static_cast<byte>(shortPixel & (31 << 5)) >> 2;
- *pixbuf++ = static_cast<byte>(shortPixel & (31)) << 3;
- *pixbuf++ = 0xff;
- }
-};
-
-class ReadPixel24
-{
-public:
- void operator()(PointerInputStream& inputStream, byte*& pixbuf) const
- {
- byte bgr[3];
- inputStream.read(bgr, 3);
- *pixbuf++ = bgr[2];
- *pixbuf++ = bgr[1];
- *pixbuf++ = bgr[0];
- *pixbuf++ = 255;
- }
-};
-
-class ReadPixel32
-{
-public:
- void operator()(PointerInputStream& inputStream, byte*& pixbuf) const
- {
- byte bgra[4];
- inputStream.read(bgra, 4);
- *pixbuf++ = bgra[2];
- *pixbuf++ = bgra[1];
- *pixbuf++ = bgra[0];
- *pixbuf++ = bgra[3];
- }
-};
-
-template<typename ReadPixel>
-void ReadBMP(PointerInputStream& inputStream, byte* bmpRGBA, int rows, int columns, ReadPixel readPixel)
-{
- for (int row = rows - 1; row >= 0; row--)
- {
- byte* pixbuf = bmpRGBA + row * columns * 4;
-
- for (int column = 0; column < columns; column++)
- {
- readPixel(inputStream, pixbuf);
- }
- }
-}
-
-Image* LoadBMPBuff(PointerInputStream& inputStream, std::size_t length)
-{
- BMPHeader_t bmpHeader;
- inputStream.read(reinterpret_cast<byte*>(bmpHeader.id), 2);
- bmpHeader.fileSize = istream_read_uint32_le(inputStream);
- bmpHeader.reserved0 = istream_read_uint32_le(inputStream);
- bmpHeader.bitmapDataOffset = istream_read_uint32_le(inputStream);
- bmpHeader.bitmapHeaderSize = istream_read_uint32_le(inputStream);
- bmpHeader.width = istream_read_uint32_le(inputStream);
- bmpHeader.height = istream_read_uint32_le(inputStream);
- bmpHeader.planes = istream_read_uint16_le(inputStream);
- bmpHeader.bitsPerPixel = istream_read_uint16_le(inputStream);
- bmpHeader.compression = istream_read_uint32_le(inputStream);
- bmpHeader.bitmapDataSize = istream_read_uint32_le(inputStream);
- bmpHeader.hRes = istream_read_uint32_le(inputStream);
- bmpHeader.vRes = istream_read_uint32_le(inputStream);
- bmpHeader.colors = istream_read_uint32_le(inputStream);
- bmpHeader.importantColors = istream_read_uint32_le(inputStream);
-
- if (bmpHeader.bitsPerPixel == 8)
- {
- int paletteSize = bmpHeader.colors * 4;
- inputStream.read(reinterpret_cast<byte*>(bmpHeader.palette), paletteSize);
- }
-
- if (bmpHeader.id[0] != 'B' && bmpHeader.id[1] != 'M')
- {
- globalErrorStream() << "LoadBMP: only Windows-style BMP files supported\n";
- return 0;
- }
- if (bmpHeader.fileSize != length)
- {
- globalErrorStream() << "LoadBMP: header size does not match file size (" << Unsigned(bmpHeader.fileSize) << " vs. " << Unsigned(length) << ")\n";
- return 0;
- }
- if (bmpHeader.compression != 0)
- {
- globalErrorStream() << "LoadBMP: only uncompressed BMP files supported\n";
- return 0;
- }
- if (bmpHeader.bitsPerPixel < 8)
- {
- globalErrorStream() << "LoadBMP: monochrome and 4-bit BMP files not supported\n";
- return 0;
- }
-
- int columns = bmpHeader.width;
- int rows = bmpHeader.height;
- if (rows < 0)
- rows = -rows;
-
- RGBAImage* image = new RGBAImage(columns, rows);
-
- switch(bmpHeader.bitsPerPixel)
- {
- case 8:
- ReadBMP(inputStream, image->getRGBAPixels(), rows, columns, ReadPixel8(bmpHeader.palette));
- break;
- case 16:
- ReadBMP(inputStream, image->getRGBAPixels(), rows, columns, ReadPixel16());
- break;
- case 24:
- ReadBMP(inputStream, image->getRGBAPixels(), rows, columns, ReadPixel24());
- break;
- case 32:
- ReadBMP(inputStream, image->getRGBAPixels(), rows, columns, ReadPixel32());
- break;
- default:
- globalErrorStream() << "LoadBMP: illegal pixel_size '" << bmpHeader.bitsPerPixel << "'\n";
- image->release();
- return 0;
- }
- return image;
-}
-
-Image* LoadBMP(ArchiveFile& file)
-{
- ScopedArchiveBuffer buffer(file);
- PointerInputStream inputStream(buffer.buffer);
- return LoadBMPBuff(inputStream, buffer.length);
-}