/* ** Easylogo TGA->header converter ** ============================== ** (C) 2000 by Paolo Scaffardi (arsenio@tin.it) ** AIRVENT SAM s.p.a - RIMINI(ITALY) ** ** This is still under construction! */ #include <stdio.h> #pragma pack(1) /*#define ENABLE_ASCII_BANNERS */ typedef struct { unsigned char id; unsigned char ColorMapType; unsigned char ImageTypeCode; unsigned short ColorMapOrigin; unsigned short ColorMapLenght; unsigned char ColorMapEntrySize; unsigned short ImageXOrigin; unsigned short ImageYOrigin; unsigned short ImageWidth; unsigned short ImageHeight; unsigned char ImagePixelSize; unsigned char ImageDescriptorByte; } tga_header_t; typedef struct { unsigned char r,g,b ; } rgb_t ; typedef struct { unsigned char b,g,r ; } bgr_t ; typedef struct { unsigned char Cb,y1,Cr,y2; } yuyv_t ; typedef struct { unsigned char *data, *palette ; int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv; } image_t ; void StringUpperCase (char *str) { int count = strlen(str); char c ; while(count--) { c=*str; if ((c >= 'a')&&(c<='z')) *str = 'A' + (c-'a'); str++ ; } } void StringLowerCase (char *str) { int count = strlen(str); char c ; while(count--) { c=*str; if ((c >= 'A')&&(c<='Z')) *str = 'a' + (c-'A'); str++ ; } } void pixel_rgb_to_yuyv (rgb_t *rgb_pixel, yuyv_t *yuyv_pixel) { unsigned int pR, pG, pB ; /* Transform (0-255) components to (0-100) */ pR = rgb_pixel->r * 100 / 255 ; pG = rgb_pixel->g * 100 / 255 ; pB = rgb_pixel->b * 100 / 255 ; /* Calculate YUV values (0-255) from RGB beetween 0-100 */ yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16 ; yuyv_pixel->Cb = pB - (pR/4) - (pG*3/4) + 128 ; yuyv_pixel->Cr = pR - (pG*3/4) - (pB/4) + 128 ; return ; } void printlogo_rgb (rgb_t *data, int w, int h) { int x,y; for (y=0; y<h; y++) { for (x=0; x<w; x++, data++) if ((data->r < 30)/*&&(data->g == 0)&&(data->b == 0)*/) printf(" "); else printf("X"); printf("\n"); } } void printlogo_yuyv (unsigned short *data, int w, int h) { int x,y; for (y=0; y<h; y++) { for (x=0; x<w; x++, data++) if (*data == 0x1080) /* Because of inverted on i386! */ printf(" "); else printf("X"); printf("\n"); } } int image_load_tga (image_t *image, char *filename) { FILE *file ; tga_header_t header ; int i; unsigned char app ; rgb_t *p ; if( ( file = fopen( filename, "rb" ) ) == NULL ) return -1; fread(&header, sizeof(header), 1, file); image->width = header.ImageWidth ; image->height = header.ImageHeight ; switch (header.ImageTypeCode){ case 2: /* Uncompressed RGB */ image->yuyv = 0 ; image->palette_size = 0 ; image->palette = NULL ; break; default: printf("Format not supported!\n"); return -1 ; } image->bpp = header.ImagePixelSize ; image->pixel_size = ((image->bpp-1) / 8) + 1 ; image->pixels = image->width * image->height; image->size = image->pixels * image->pixel_size ; image->data = malloc(image->size) ; if (image->bpp != 24) { printf("Bpp not supported: %d!\n", image->bpp); return -1 ; } fread(image->data, image->size, 1, file); /* Swapping R and B values */ p = image->data ; for(i=0; i < image->pixels; i++, p++) { app = p->r ; p->r = p->b ; p->b = app ; } /* Swapping image */ if(!(header.ImageDescriptorByte & 0x20)) { unsigned char *temp = malloc(image->size); int linesize = image->pixel_size * image->width ; void *dest = image->data, *source = temp + image->size - linesize ; printf("S"); if (temp == NULL) { printf("Cannot alloc temp buffer!\n"); return -1; } memcpy(temp, image->data, image->size); for(i = 0; i<image->height; i++, dest+=linesize, source-=linesize) memcpy(dest, source, linesize); free( temp ); } #ifdef ENABLE_ASCII_BANNERS printlogo_rgb (image->data,image->width, image->height); #endif fclose (file); return 0; } int image_free (image_t *image) { if(image->data != NULL) free(image->data); if(image->palette != NULL) free(image->palette); return 0; } int image_rgb_to_yuyv (image_t *rgb_image, image_t *yuyv_image) { rgb_t *rgb_ptr = (rgb_t *) rgb_image->data ; yuyv_t yuyv ; unsigned short *dest ; int count = 0 ; yuyv_image->pixel_size = 2 ; yuyv_image->bpp = 16 ; yuyv_image->yuyv = 1 ; yuyv_image->width = rgb_image->width ; yuyv_image->height = rgb_image->height ; yuyv_image->pixels = yuyv_image->width * yuyv_image->height ; yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size ; dest = (unsigned short *) (yuyv_image->data = malloc(yuyv_image->size)) ; yuyv_image->palette = 0 ; yuyv_image->palette_size= 0 ; while((count++) < rgb_image->pixels) { pixel_rgb_to_yuyv (rgb_ptr++, &yuyv); if ((count & 1)==0) /* Was == 0 */ memcpy (dest, ((void *)&yuyv) + 2, sizeof(short)); else memcpy (dest, (void *)&yuyv, sizeof(short)); dest ++ ; } #ifdef ENABLE_ASCII_BANNERS printlogo_yuyv (yuyv_image->data, yuyv_image->width, yuyv_image->height); #endif return 0 ; } int image_save_header (image_t *image, char *filename, char *varname) { FILE *file = fopen (filename, "w"); char app[256], str[256]="", def_name[64] ; int count = image->size, col=0; unsigned char *dataptr = image->data ; if (file==NULL) return -1 ; /* Author information */ fprintf(file, "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n/*\n"); */ fprintf(file, " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", varname); fprintf(file, " * Where:\t'screen'\tis the pointer to the frame buffer\n"); fprintf(file, " *\t\t'width'\tis the screen width\n"); fprintf(file, " *\t\t'x'\t\tis the horizontal position\n"); fprintf(file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); /* Headers */ fprintf(file, "#include <video_easylogo.h>\n\n"); /* Macros */ strcpy(def_name, varname); StringUpperCase (def_name); fprintf(file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, image->width); fprintf(file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, image->height); fprintf(file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, image->pixels); fprintf(file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); fprintf(file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, image->pixel_size); fprintf(file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, image->size); /* Declaration */ fprintf(file, "unsigned char DEF_%s_DATA[DEF_%s_SIZE] = {\n", def_name, def_name); /* Data */ while(count) switch (col){ case 0: sprintf(str, " 0x%02x", *dataptr++); col++; count-- ; break; case 16: fprintf(file, "%s", str); if (count > 0) fprintf(file,","); fprintf(file, "\n"); col = 0 ; break; default: strcpy(app, str); sprintf(str, "%s, 0x%02x", app, *dataptr++); col++ ; count-- ; break; } if (col) fprintf(file, "%s\n", str); /* End of declaration */ fprintf(file, "};\n\n"); /* Variable */ fprintf(file, "fastimage_t %s = {\n", varname); fprintf(file, " DEF_%s_DATA,\n", def_name); fprintf(file, " DEF_%s_WIDTH,\n", def_name); fprintf(file, " DEF_%s_HEIGHT,\n", def_name); fprintf(file, " DEF_%s_BPP,\n", def_name); fprintf(file, " DEF_%s_PIXEL_SIZE,\n", def_name); fprintf(file, " DEF_%s_SIZE\n};\n", def_name); fclose (file); return 0 ; } #define DEF_FILELEN 256 int main (int argc, char *argv[]) { char inputfile[DEF_FILELEN], outputfile[DEF_FILELEN], varname[DEF_FILELEN]; image_t rgb_logo, yuyv_logo ; switch (argc){ case 2: case 3: case 4: strcpy (inputfile, argv[1]); if (argc > 2) strcpy (varname, argv[2]); else { int pos = strchr(inputfile, '.'); if (pos >= 0) { strncpy (varname, inputfile, pos); varname[pos] = 0 ; } } if (argc > 3) strcpy (outputfile, argv[3]); else { int pos = strchr (varname, '.'); if (pos > 0) { char app[DEF_FILELEN] ; strncpy(app, varname, pos); sprintf(outputfile, "%s.h", app); } } break; default: printf("EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n\n"); printf("Syntax: easylogo inputfile [outputvar {outputfile}] \n"); printf("\n"); printf("Where: 'inputfile' is the TGA image to load\n"); printf(" 'outputvar' is the variable name to create\n"); printf(" 'outputfile' is the output header file (default is 'inputfile.h')\n"); return -1 ; } printf("Doing '%s' (%s) from '%s'...", outputfile, varname, inputfile); /* Import TGA logo */ printf("L"); if (image_load_tga (&rgb_logo, inputfile)<0) { printf("input file not found!\n"); exit(1); } /* Convert it to YUYV format */ printf("C"); image_rgb_to_yuyv (&rgb_logo, &yuyv_logo) ; /* Save it into a header format */ printf("S"); image_save_header (&yuyv_logo, outputfile, varname) ; /* Free original image and copy */ image_free (&rgb_logo); image_free (&yuyv_logo); printf("\n"); return 0 ; }