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[/] [orsoc_graphics_accelerator/] [tags/] [version1.0/] [sw/] [utils/] [spritemaker.cpp] - Rev 3
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/* Per Lenander 2008 Aniconv tool: ------------- The tool utilize SDL/SDL_image for graphics conversion */ #include <SDL/SDL.h> #include <SDL/SDL_image.h> #define SCREEN_WIDTH 1024 #define SCREEN_HEIGHT 1500 #define SCREEN_DEPTH 32 #include <sstream> #include <iostream> #include <fstream> #include <cstdlib> using namespace std; SDL_Surface *screen; int spriteW = 0; int spriteH = 0; /* Ordinary inits */ int InitSDL(void) { if (SDL_Init(SDL_INIT_VIDEO) < 0) { cerr << "Unable to init SDL: " << SDL_GetError() << endl; return 1; } screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_DEPTH, SDL_HWSURFACE | SDL_DOUBLEBUF); if (!screen) { cerr << "Unable to set video: " << SDL_GetError() << endl; return 1; } // make sure SDL cleans up before exit atexit(SDL_Quit); return 0; }; /* Loads the spritesheet (or any image, but this is the only thing it is used for) */ SDL_Surface * LoadImage(std::string s) { SDL_Surface *loaded = NULL; loaded = IMG_Load(s.c_str()); if(!loaded) return NULL; SDL_Surface *optimized = NULL; optimized = SDL_DisplayFormatAlpha(loaded); SDL_FreeSurface(loaded); if(!optimized) return NULL; return optimized; }; SDL_Color GetPixel ( SDL_Surface* pSurface , int x , int y ) { SDL_Color color ; Uint32 col = 0 ; //determine position char* pPosition = ( char* ) pSurface->pixels ; //offset by y pPosition += ( pSurface->pitch * y ) ; //offset by x pPosition += ( pSurface->format->BytesPerPixel * x ) ; //copy pixel data memcpy ( &col , pPosition , pSurface->format->BytesPerPixel ) ; //convert color SDL_GetRGB ( col , pSurface->format , &color.r , &color.g , &color.b ) ; return ( color ) ; } int main ( int argc, char** argv ) { if( argc < 2 ) { cout << "Usage: " << argv[0] << " filename.<jpg/png/bmp> [bpp]" << endl; return 1; } if( InitSDL() ) return 1; cout << "SDL successfully initialized." << endl; SDL_Surface *spritesheet = LoadImage( argv[1] ); if( spritesheet == NULL ) { cout << "Couldn't load " << argv[1] << "!" << endl; return 1; } /* Open an output file */ string filename(argv[1]); filename += ".h"; ofstream output(filename.c_str(),ofstream::out); if( !output ) { cout << "Couldn't open output file!" << endl; return 1; } int outputBpp = 8; if(argc >= 3) { stringstream ss(argv[2]); ss >> outputBpp; if(outputBpp != 8 && outputBpp != 16 && outputBpp != 24 && outputBpp != 32) { cout << "Mode: '" << argv[2] << "' not supported, choose between 8, 16, 24, and 32" << endl; return 1; } else if(outputBpp == 8 && spritesheet->w % 4) { cout << "Mode: 8bpp requires the width to be divisible by 4!" << endl; return 1; } else if(outputBpp == 16 && spritesheet->w % 2) { cout << "Mode: 16bpp requires the width to be divisible by 2!" << endl; return 1; } } int stride = 1; if(outputBpp == 8) stride = 4; else if(outputBpp == 16) stride = 2; filename = filename.substr(0, filename.find('.')); output << "/* Sprite definition */" << endl << endl; output << "/* size: " << spritesheet->w << " * " << spritesheet->h << " at " << outputBpp << "BPP */" << endl << endl; output << "#ifndef " << filename << "_H" << endl; output << "#define " << filename << "_H" << endl; output << "unsigned int " << filename << "[] = {" << endl; for(int y = 0; y < spritesheet->h; y++) { for(int x = 0; x < spritesheet->w; x+=stride) { unsigned int pixel = 0; for(int s = 0; s < stride; s++) { SDL_Color c = GetPixel(spritesheet, x+s, y); if(outputBpp == 8) { pixel += (unsigned char)(0.3 * c.r + 0.59 * c.g + 0.11 * c.b); if(s != 3) pixel = pixel << 8; } else if(outputBpp == 16) { c.r = c.r >> 3; c.g = c.g >> 2; c.b = c.b >> 3; pixel += (c.r << 11) | (c.g << 5) | c.b; if(s != 1) pixel = pixel << 16; } else pixel = (c.r << 16) | (c.g << 8) | c.b; } output << pixel << "u, "; } output << endl; } output << "};" << endl << endl; output << "#endif // " << filename << "_H" << endl; output.close(); SDL_FreeSurface( spritesheet ); return 0; }