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1/**
2 * @file llimagebmp.h
3 * @brief Image implementation for BMP.
4 *
5 * Copyright (c) 2001-2007, Linden Research, Inc.
6 *
7 * The source code in this file ("Source Code") is provided by Linden Lab
8 * to you under the terms of the GNU General Public License, version 2.0
9 * ("GPL"), unless you have obtained a separate licensing agreement
10 * ("Other License"), formally executed by you and Linden Lab. Terms of
11 * the GPL can be found in doc/GPL-license.txt in this distribution, or
12 * online at http://secondlife.com/developers/opensource/gplv2
13 *
14 * There are special exceptions to the terms and conditions of the GPL as
15 * it is applied to this Source Code. View the full text of the exception
16 * in the file doc/FLOSS-exception.txt in this software distribution, or
17 * online at http://secondlife.com/developers/opensource/flossexception
18 *
19 * By copying, modifying or distributing this software, you acknowledge
20 * that you have read and understood your obligations described above,
21 * and agree to abide by those obligations.
22 *
23 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
24 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
25 * COMPLETENESS OR PERFORMANCE.
26 */
27
28#ifndef LL_LLIMAGEBMP_H
29#define LL_LLIMAGEBMP_H
30
31#include "llimage.h"
32
33// This class compresses and decompressed BMP files
34
35class LLImageBMP : public LLImageFormatted
36{
37protected:
38 virtual ~LLImageBMP();
39
40public:
41 LLImageBMP();
42
43 /*virtual*/ BOOL updateData();
44 /*virtual*/ BOOL decode(LLImageRaw* raw_image, F32 time=0.0);
45 /*virtual*/ BOOL encode(const LLImageRaw* raw_image, F32 time=0.0);
46
47protected:
48 BOOL decodeColorTable8( U8* dst, U8* src );
49 BOOL decodeColorMask16( U8* dst, U8* src );
50 BOOL decodeTruecolor24( U8* dst, U8* src );
51 BOOL decodeColorMask32( U8* dst, U8* src );
52
53 U32 countTrailingZeros( U32 m );
54
55protected:
56 S32 mColorPaletteColors;
57 U8* mColorPalette;
58 S32 mBitmapOffset;
59 S32 mBitsPerPixel;
60 U32 mBitfieldMask[4]; // rgba
61 BOOL mOriginAtTop;
62};
63
64#endif