/* ** 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 <getopt.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.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 { void *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"); } } static inline unsigned short le16_to_cpu (unsigned short val) { union { unsigned char pval[2]; unsigned short val; } swapped; swapped.val = val; return (swapped.pval[1] << 8) + swapped.pval[0]; } 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); /* byte swap: tga is little endian, host is ??? */ header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin); header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght); header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin); header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin); header.ImageWidth = le16_to_cpu (header.ImageWidth); header.ImageHeight = le16_to_cpu (header.ImageHeight); 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; } void image_free (image_t * image) { free (image->data); free (image->palette); } 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 static void usage (int exit_status) { puts ( "EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n" "\n" "Syntax: easylogo [options] inputfile [outputvar [outputfile]]\n" "\n" "Options:\n" " -r Output RGB instead of YUYV\n" " -h Help output\n" "\n" "Where: 'inputfile' is the TGA image to load\n" " 'outputvar' is the variable name to create\n" " 'outputfile' is the output header file (default is 'inputfile.h')" ); exit (exit_status); } int main (int argc, char *argv[]) { int c; bool use_rgb = false; char inputfile[DEF_FILELEN], outputfile[DEF_FILELEN], varname[DEF_FILELEN]; image_t rgb_logo, yuyv_logo; while ((c = getopt(argc, argv, "hr")) > 0) { switch (c) { case 'h': usage (0); break; case 'r': use_rgb = true; puts ("Using 24-bit RGB Output Fromat"); break; default: usage (1); break; } } c = argc - optind; if (c > 4 || c < 1) usage (1); strcpy (inputfile, argv[optind]); if (c > 1) strcpy (varname, argv[optind + 1]); else { /* transform "input.tga" to just "input" */ char *dot; strcpy (varname, inputfile); dot = strchr (varname, '.'); if (dot) *dot = '\0'; } if (c > 2) strcpy (outputfile, argv[optind + 2]); else { /* just append ".h" to input file name */ strcpy (outputfile, inputfile); strcat (outputfile, ".h"); } /* Make sure the output is sent as soon as we printf() */ setbuf(stdout, NULL); 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 if wanted */ if (!use_rgb) { printf ("C"); image_rgb_to_yuyv (&rgb_logo, &yuyv_logo); } /* Save it into a header format */ printf ("S"); image_save_header (use_rgb ? &rgb_logo : &yuyv_logo, outputfile, varname); /* Free original image and copy */ image_free (&rgb_logo); if (!use_rgb) image_free (&yuyv_logo); printf ("\n"); return 0; }