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qdbmp.h 3.9KB

    #ifndef _BMP_H_ #define _BMP_H_ /************************************************************** QDBMP - Quick n' Dirty BMP v1.0.0 - 2007-04-07 The library supports the following BMP variants: 1. Uncompressed 32 BPP (alpha values are ignored) 2. Uncompressed 24 BPP 3. Uncompressed 8 BPP (indexed color) QDBMP is free and open source software, distributed under the MIT licence. Copyright (c) 2007 Chai Braudo ( 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. **************************************************************/ #include <stdio.h> /* Type definitions */ #ifndef UINT #define UINT unsigned long int #endif #ifndef USHORT #define USHORT unsigned short #endif #ifndef UCHAR #define UCHAR unsigned char #endif /* Version */ #define QDBMP_VERSION_MAJOR 1 #define QDBMP_VERSION_MINOR 0 #define QDBMP_VERSION_PATCH 1 /* Error codes */ typedef enum { BMP_OK = 0, /* No error */ BMP_ERROR, /* General error */ BMP_OUT_OF_MEMORY, /* Could not allocate enough memory to complete the operation */ BMP_IO_ERROR, /* General input/output error */ BMP_FILE_NOT_FOUND, /* File not found */ BMP_FILE_NOT_SUPPORTED, /* File is not a supported BMP variant */ BMP_FILE_INVALID, /* File is not a BMP image or is an invalid BMP */ BMP_INVALID_ARGUMENT, /* An argument is invalid or out of range */ BMP_TYPE_MISMATCH, /* The requested action is not compatible with the BMP's type */ BMP_ERROR_NUM } BMP_STATUS; /* Bitmap image */ typedef struct _BMP BMP; /*********************************** Public methods **********************************/ /* Construction/destruction */ BMP* BMP_Create ( UINT width, UINT height, USHORT depth ); void BMP_Free ( BMP* bmp ); /* I/O */ BMP* BMP_ReadFile ( const char* filename ); void BMP_WriteFile ( BMP* bmp, const char* filename ); /* Meta info */ UINT BMP_GetWidth ( BMP* bmp ); UINT BMP_GetHeight ( BMP* bmp ); USHORT BMP_GetDepth ( BMP* bmp ); /* Pixel access */ void BMP_GetPixelRGB ( BMP* bmp, UINT x, UINT y, UCHAR* r, UCHAR* g, UCHAR* b ); void BMP_SetPixelRGB ( BMP* bmp, UINT x, UINT y, UCHAR r, UCHAR g, UCHAR b ); void BMP_GetPixelIndex ( BMP* bmp, UINT x, UINT y, UCHAR* val ); void BMP_SetPixelIndex ( BMP* bmp, UINT x, UINT y, UCHAR val ); /* Palette handling */ void BMP_GetPaletteColor ( BMP* bmp, UCHAR index, UCHAR* r, UCHAR* g, UCHAR* b ); void BMP_SetPaletteColor ( BMP* bmp, UCHAR index, UCHAR r, UCHAR g, UCHAR b ); /* Error handling */ BMP_STATUS BMP_GetError (); const char* BMP_GetErrorDescription (); /* Useful macro that may be used after each BMP operation to check for an error */ #define BMP_CHECK_ERROR( output_file, return_value ) \ if ( BMP_GetError() != BMP_OK ) \ { \ fprintf( ( output_file ), "BMP error: %s\n", BMP_GetErrorDescription() ); \ return( return_value ); \ } \ #endif