2 ** Easylogo TGA->header converter
3 ** ==============================
4 ** (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
5 ** AIRVENT SAM s.p.a - RIMINI(ITALY)
6 ** (C) 2007-2008 Mike Frysinger <vapier@gentoo.org>
8 ** This is still under construction!
22 /*#define ENABLE_ASCII_BANNERS */
26 unsigned char ColorMapType;
27 unsigned char ImageTypeCode;
28 unsigned short ColorMapOrigin;
29 unsigned short ColorMapLenght;
30 unsigned char ColorMapEntrySize;
31 unsigned short ImageXOrigin;
32 unsigned short ImageYOrigin;
33 unsigned short ImageWidth;
34 unsigned short ImageHeight;
35 unsigned char ImagePixelSize;
36 unsigned char ImageDescriptorByte;
40 unsigned char r, g, b;
44 unsigned char b, g, r;
48 unsigned char Cb, y1, Cr, y2;
53 int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv;
56 void *xmalloc (size_t size)
58 void *ret = malloc (size);
60 fprintf (stderr, "\nerror: malloc(%zu) failed: %s",
61 size, strerror(errno));
67 void StringUpperCase (char *str)
69 int count = strlen (str);
74 if ((c >= 'a') && (c <= 'z'))
75 *str = 'A' + (c - 'a');
80 void StringLowerCase (char *str)
82 int count = strlen (str);
87 if ((c >= 'A') && (c <= 'Z'))
88 *str = 'a' + (c - 'A');
92 void pixel_rgb_to_yuyv (rgb_t * rgb_pixel, yuyv_t * yuyv_pixel)
94 unsigned int pR, pG, pB;
96 /* Transform (0-255) components to (0-100) */
97 pR = rgb_pixel->r * 100 / 255;
98 pG = rgb_pixel->g * 100 / 255;
99 pB = rgb_pixel->b * 100 / 255;
101 /* Calculate YUV values (0-255) from RGB beetween 0-100 */
102 yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16;
103 yuyv_pixel->Cb = pB - (pR / 4) - (pG * 3 / 4) + 128;
104 yuyv_pixel->Cr = pR - (pG * 3 / 4) - (pB / 4) + 128;
109 void printlogo_rgb (rgb_t * data, int w, int h)
113 for (y = 0; y < h; y++) {
114 for (x = 0; x < w; x++, data++)
116 30) /*&&(data->g == 0)&&(data->b == 0) */ )
124 void printlogo_yuyv (unsigned short *data, int w, int h)
128 for (y = 0; y < h; y++) {
129 for (x = 0; x < w; x++, data++)
130 if (*data == 0x1080) /* Because of inverted on i386! */
138 static inline unsigned short le16_to_cpu (unsigned short val)
141 unsigned char pval[2];
146 return (swapped.pval[1] << 8) + swapped.pval[0];
149 int image_load_tga (image_t * image, char *filename)
157 if ((file = fopen (filename, "rb")) == NULL)
160 fread (&header, sizeof (header), 1, file);
162 /* byte swap: tga is little endian, host is ??? */
163 header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin);
164 header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght);
165 header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin);
166 header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin);
167 header.ImageWidth = le16_to_cpu (header.ImageWidth);
168 header.ImageHeight = le16_to_cpu (header.ImageHeight);
170 image->width = header.ImageWidth;
171 image->height = header.ImageHeight;
173 switch (header.ImageTypeCode) {
174 case 2: /* Uncompressed RGB */
176 image->palette_size = 0;
177 image->palette = NULL;
181 printf ("Format not supported!\n");
185 image->bpp = header.ImagePixelSize;
186 image->pixel_size = ((image->bpp - 1) / 8) + 1;
187 image->pixels = image->width * image->height;
188 image->size = image->pixels * image->pixel_size;
189 image->data = xmalloc (image->size);
191 if (image->bpp != 24) {
192 printf ("Bpp not supported: %d!\n", image->bpp);
196 fread (image->data, image->size, 1, file);
198 /* Swapping R and B values */
201 for (i = 0; i < image->pixels; i++, p++) {
209 if (!(header.ImageDescriptorByte & 0x20)) {
210 unsigned char *temp = xmalloc (image->size);
211 int linesize = image->pixel_size * image->width;
212 void *dest = image->data,
213 *source = temp + image->size - linesize;
217 printf ("Cannot alloc temp buffer!\n");
221 memcpy (temp, image->data, image->size);
222 for (i = 0; i < image->height;
223 i++, dest += linesize, source -= linesize)
224 memcpy (dest, source, linesize);
228 #ifdef ENABLE_ASCII_BANNERS
229 printlogo_rgb (image->data, image->width, image->height);
236 void image_free (image_t * image)
239 free (image->palette);
242 int image_rgb_to_yuyv (image_t * rgb_image, image_t * yuyv_image)
244 rgb_t *rgb_ptr = (rgb_t *) rgb_image->data;
246 unsigned short *dest;
249 yuyv_image->pixel_size = 2;
250 yuyv_image->bpp = 16;
251 yuyv_image->yuyv = 1;
252 yuyv_image->width = rgb_image->width;
253 yuyv_image->height = rgb_image->height;
254 yuyv_image->pixels = yuyv_image->width * yuyv_image->height;
255 yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size;
256 dest = (unsigned short *) (yuyv_image->data =
257 xmalloc (yuyv_image->size));
258 yuyv_image->palette = 0;
259 yuyv_image->palette_size = 0;
261 while ((count++) < rgb_image->pixels) {
262 pixel_rgb_to_yuyv (rgb_ptr++, &yuyv);
264 if ((count & 1) == 0) /* Was == 0 */
265 memcpy (dest, ((void *) &yuyv) + 2, sizeof (short));
267 memcpy (dest, (void *) &yuyv, sizeof (short));
272 #ifdef ENABLE_ASCII_BANNERS
273 printlogo_yuyv (yuyv_image->data, yuyv_image->width,
279 int image_rgb888_to_rgb565(image_t *rgb888_image, image_t *rgb565_image)
281 rgb_t *rgb_ptr = (rgb_t *) rgb888_image->data;
282 unsigned short *dest;
285 rgb565_image->pixel_size = 2;
286 rgb565_image->bpp = 16;
287 rgb565_image->yuyv = 0;
288 rgb565_image->width = rgb888_image->width;
289 rgb565_image->height = rgb888_image->height;
290 rgb565_image->pixels = rgb565_image->width * rgb565_image->height;
291 rgb565_image->size = rgb565_image->pixels * rgb565_image->pixel_size;
292 dest = (unsigned short *) (rgb565_image->data =
293 xmalloc(rgb565_image->size));
294 rgb565_image->palette = 0;
295 rgb565_image->palette_size = 0;
297 while ((count++) < rgb888_image->pixels) {
299 *dest++ = ((rgb_ptr->b & 0xF8) << 8) |
300 ((rgb_ptr->g & 0xFC) << 3) |
310 int image_save_header (image_t * image, char *filename, char *varname)
312 FILE *file = fopen (filename, "w");
313 char app[256], str[256] = "", def_name[64];
314 int count = image->size, col = 0;
315 unsigned char *dataptr = image->data;
320 /* Author information */
322 "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n");
324 " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n",
327 " * Where:\t'screen'\tis the pointer to the frame buffer\n");
328 fprintf (file, " *\t\t'width'\tis the screen width\n");
329 fprintf (file, " *\t\t'x'\t\tis the horizontal position\n");
330 fprintf (file, " *\t\t'y'\t\tis the vertical position\n */\n\n");
333 if (use_gzip & 0x1) {
334 const char *errstr = NULL;
335 unsigned char *compressed;
338 char *gzfilename = xmalloc(strlen (filename) + 20);
339 char *gzcmd = xmalloc(strlen (filename) + 20);
341 sprintf (gzfilename, "%s.gz", filename);
342 sprintf (gzcmd, "gzip > %s", gzfilename);
343 gz = popen (gzcmd, "w");
345 errstr = "\nerror: popen() failed";
348 if (fwrite (image->data, image->size, 1, gz) != 1) {
349 errstr = "\nerror: writing data to gzip failed";
353 errstr = "\nerror: gzip process failed";
357 gz = fopen (gzfilename, "r");
359 errstr = "\nerror: open() on gzip data failed";
362 if (stat (gzfilename, &st)) {
363 errstr = "\nerror: stat() on gzip file failed";
366 compressed = xmalloc (st.st_size);
367 if (fread (compressed, st.st_size, 1, gz) != 1) {
368 errstr = "\nerror: reading gzip data failed";
375 dataptr = compressed;
377 fprintf (file, "#define EASYLOGO_ENABLE_GZIP %i\n\n", count);
379 fprintf (file, "static unsigned char EASYLOGO_DECOMP_BUFFER[%i];\n\n", image->size);
392 fprintf (file, "#include <video_easylogo.h>\n\n");
394 strcpy (def_name, varname);
395 StringUpperCase (def_name);
396 fprintf (file, "#define DEF_%s_WIDTH\t\t%d\n", def_name,
398 fprintf (file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name,
400 fprintf (file, "#define DEF_%s_PIXELS\t\t%d\n", def_name,
402 fprintf (file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp);
403 fprintf (file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name,
405 fprintf (file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name,
408 fprintf (file, "unsigned char DEF_%s_DATA[] = {\n",
415 sprintf (str, " 0x%02x", *dataptr++);
421 fprintf (file, "%s", str);
424 fprintf (file, "\n");
431 sprintf (str, "%s, 0x%02x", app, *dataptr++);
438 fprintf (file, "%s\n", str);
440 /* End of declaration */
441 fprintf (file, "};\n\n");
443 fprintf (file, "fastimage_t %s = {\n", varname);
444 fprintf (file, " DEF_%s_DATA,\n", def_name);
445 fprintf (file, " DEF_%s_WIDTH,\n", def_name);
446 fprintf (file, " DEF_%s_HEIGHT,\n", def_name);
447 fprintf (file, " DEF_%s_BPP,\n", def_name);
448 fprintf (file, " DEF_%s_PIXEL_SIZE,\n", def_name);
449 fprintf (file, " DEF_%s_SIZE\n};\n", def_name);
456 #define DEF_FILELEN 256
458 static void usage (int exit_status)
461 "EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n"
463 "Syntax: easylogo [options] inputfile [outputvar [outputfile]]\n"
466 " -r Output RGB888 instead of YUYV\n"
467 " -s Output RGB565 instead of YUYV\n"
468 " -g Compress with gzip\n"
469 " -b Preallocate space in bss for decompressing image\n"
472 "Where: 'inputfile' is the TGA image to load\n"
473 " 'outputvar' is the variable name to create\n"
474 " 'outputfile' is the output header file (default is 'inputfile.h')"
479 int main (int argc, char *argv[])
482 bool use_rgb888 = false;
483 bool use_rgb565 = false;
484 char inputfile[DEF_FILELEN],
485 outputfile[DEF_FILELEN], varname[DEF_FILELEN];
487 image_t rgb888_logo, rgb565_logo, yuyv_logo;
489 while ((c = getopt(argc, argv, "hrsgb")) > 0) {
496 puts("Using 24-bit RGB888 Output Fromat");
500 puts("Using 16-bit RGB565 Output Fromat");
504 puts ("Compressing with gzip");
508 puts ("Preallocating bss space for decompressing image");
520 strcpy (inputfile, argv[optind]);
523 strcpy (varname, argv[optind + 1]);
525 /* transform "input.tga" to just "input" */
527 strcpy (varname, inputfile);
528 dot = strchr (varname, '.');
534 strcpy (outputfile, argv[optind + 2]);
536 /* just append ".h" to input file name */
537 strcpy (outputfile, inputfile);
538 strcat (outputfile, ".h");
541 /* Make sure the output is sent as soon as we printf() */
542 setbuf(stdout, NULL);
544 printf ("Doing '%s' (%s) from '%s'...",
545 outputfile, varname, inputfile);
547 /* Import TGA logo */
550 if (image_load_tga(&rgb888_logo, inputfile) < 0) {
551 printf ("input file not found!\n");
555 /* Convert, save, and free the image */
557 if (!use_rgb888 && !use_rgb565) {
559 image_rgb_to_yuyv(&rgb888_logo, &yuyv_logo);
562 image_save_header(&yuyv_logo, outputfile, varname);
563 image_free(&yuyv_logo);
564 } else if (use_rgb565) {
566 image_rgb888_to_rgb565(&rgb888_logo, &rgb565_logo);
569 image_save_header(&rgb565_logo, outputfile, varname);
570 image_free(&rgb565_logo);
573 image_save_header(&rgb888_logo, outputfile, varname);
576 /* Free original image and copy */
578 image_free(&rgb888_logo);