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1 /*
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>
7 **
8 ** This is still under construction!
9 */
10
11 #include <errno.h>
12 #include <getopt.h>
13 #include <stdbool.h>
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <string.h>
17 #include <unistd.h>
18 #include <sys/stat.h>
19
20 #pragma pack(1)
21
22 /*#define ENABLE_ASCII_BANNERS */
23
24 typedef struct {
25         unsigned char id;
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;
37 } tga_header_t;
38
39 typedef struct {
40         unsigned char r, g, b;
41 } rgb_t;
42
43 typedef struct {
44         unsigned char b, g, r;
45 } bgr_t;
46
47 typedef struct {
48         unsigned char Cb, y1, Cr, y2;
49 } yuyv_t;
50
51 typedef struct {
52         void *data, *palette;
53         int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv;
54 } image_t;
55
56 void *xmalloc (size_t size)
57 {
58         void *ret = malloc (size);
59         if (!ret) {
60                 fprintf (stderr, "\nerror: malloc(%zu) failed: %s",
61                         size, strerror(errno));
62                 exit (1);
63         }
64         return ret;
65 }
66
67 void StringUpperCase (char *str)
68 {
69         int count = strlen (str);
70         char c;
71
72         while (count--) {
73                 c = *str;
74                 if ((c >= 'a') && (c <= 'z'))
75                         *str = 'A' + (c - 'a');
76                 str++;
77         }
78 }
79
80 void StringLowerCase (char *str)
81 {
82         int count = strlen (str);
83         char c;
84
85         while (count--) {
86                 c = *str;
87                 if ((c >= 'A') && (c <= 'Z'))
88                         *str = 'a' + (c - 'A');
89                 str++;
90         }
91 }
92 void pixel_rgb_to_yuyv (rgb_t * rgb_pixel, yuyv_t * yuyv_pixel)
93 {
94         unsigned int pR, pG, pB;
95
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;
100
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;
105
106         return;
107 }
108
109 void printlogo_rgb (rgb_t * data, int w, int h)
110 {
111         int x, y;
112
113         for (y = 0; y < h; y++) {
114                 for (x = 0; x < w; x++, data++)
115                         if ((data->r <
116                              30) /*&&(data->g == 0)&&(data->b == 0) */ )
117                                 printf (" ");
118                         else
119                                 printf ("X");
120                 printf ("\n");
121         }
122 }
123
124 void printlogo_yuyv (unsigned short *data, int w, int h)
125 {
126         int x, y;
127
128         for (y = 0; y < h; y++) {
129                 for (x = 0; x < w; x++, data++)
130                         if (*data == 0x1080)    /* Because of inverted on i386! */
131                                 printf (" ");
132                         else
133                                 printf ("X");
134                 printf ("\n");
135         }
136 }
137
138 static inline unsigned short le16_to_cpu (unsigned short val)
139 {
140         union {
141                 unsigned char pval[2];
142                 unsigned short val;
143         } swapped;
144
145         swapped.val = val;
146         return (swapped.pval[1] << 8) + swapped.pval[0];
147 }
148
149 int image_load_tga (image_t * image, char *filename)
150 {
151         FILE *file;
152         tga_header_t header;
153         int i;
154         unsigned char app;
155         rgb_t *p;
156
157         if ((file = fopen (filename, "rb")) == NULL)
158                 return -1;
159
160         fread (&header, sizeof (header), 1, file);
161
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);
169
170         image->width = header.ImageWidth;
171         image->height = header.ImageHeight;
172
173         switch (header.ImageTypeCode) {
174         case 2:         /* Uncompressed RGB */
175                 image->yuyv = 0;
176                 image->palette_size = 0;
177                 image->palette = NULL;
178                 break;
179
180         default:
181                 printf ("Format not supported!\n");
182                 return -1;
183         }
184
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);
190
191         if (image->bpp != 24) {
192                 printf ("Bpp not supported: %d!\n", image->bpp);
193                 return -1;
194         }
195
196         fread (image->data, image->size, 1, file);
197
198 /* Swapping R and B values */
199
200         p = image->data;
201         for (i = 0; i < image->pixels; i++, p++) {
202                 app = p->r;
203                 p->r = p->b;
204                 p->b = app;
205         }
206
207 /* Swapping image */
208
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;
214
215                 printf ("S");
216                 if (temp == NULL) {
217                         printf ("Cannot alloc temp buffer!\n");
218                         return -1;
219                 }
220
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);
225
226                 free (temp);
227         }
228 #ifdef ENABLE_ASCII_BANNERS
229         printlogo_rgb (image->data, image->width, image->height);
230 #endif
231
232         fclose (file);
233         return 0;
234 }
235
236 void image_free (image_t * image)
237 {
238         free (image->data);
239         free (image->palette);
240 }
241
242 int image_rgb_to_yuyv (image_t * rgb_image, image_t * yuyv_image)
243 {
244         rgb_t *rgb_ptr = (rgb_t *) rgb_image->data;
245         yuyv_t yuyv;
246         unsigned short *dest;
247         int count = 0;
248
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;
260
261         while ((count++) < rgb_image->pixels) {
262                 pixel_rgb_to_yuyv (rgb_ptr++, &yuyv);
263
264                 if ((count & 1) == 0)   /* Was == 0 */
265                         memcpy (dest, ((void *) &yuyv) + 2, sizeof (short));
266                 else
267                         memcpy (dest, (void *) &yuyv, sizeof (short));
268
269                 dest++;
270         }
271
272 #ifdef ENABLE_ASCII_BANNERS
273         printlogo_yuyv (yuyv_image->data, yuyv_image->width,
274                         yuyv_image->height);
275 #endif
276         return 0;
277 }
278
279 int image_rgb888_to_rgb565(image_t *rgb888_image, image_t *rgb565_image)
280 {
281         rgb_t *rgb_ptr = (rgb_t *) rgb888_image->data;
282         unsigned short *dest;
283         int count = 0;
284
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;
296
297         while ((count++) < rgb888_image->pixels) {
298
299                 *dest++ = ((rgb_ptr->b & 0xF8) << 8) |
300                         ((rgb_ptr->g & 0xFC) << 3) |
301                         (rgb_ptr->r >> 3);
302                 rgb_ptr++;
303         }
304
305         return 0;
306 }
307
308 enum comp_t {
309         COMP_NONE,
310         COMP_GZIP,
311         COMP_LZMA,
312 };
313 static enum comp_t compression = COMP_NONE;
314 static bool bss_storage = false;
315
316 int image_save_header (image_t * image, char *filename, char *varname)
317 {
318         FILE *file = fopen (filename, "w");
319         char app[256], str[256] = "", def_name[64];
320         int count = image->size, col = 0;
321         unsigned char *dataptr = image->data;
322
323         if (file == NULL)
324                 return -1;
325
326         /*  Author information */
327         fprintf (file,
328                  "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n");
329         fprintf (file,
330                  " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n",
331                  varname);
332         fprintf (file,
333                  " * Where:\t'screen'\tis the pointer to the frame buffer\n");
334         fprintf (file, " *\t\t'width'\tis the screen width\n");
335         fprintf (file, " *\t\t'x'\t\tis the horizontal position\n");
336         fprintf (file, " *\t\t'y'\t\tis the vertical position\n */\n\n");
337
338         /* image compress */
339         if (compression != COMP_NONE) {
340                 const char *errstr = NULL;
341                 unsigned char *compressed;
342                 const char *comp_name;
343                 struct stat st;
344                 FILE *compfp;
345                 size_t filename_len = strlen(filename);
346                 char *compfilename = xmalloc(filename_len + 20);
347                 char *compcmd = xmalloc(filename_len + 50);
348
349                 sprintf(compfilename, "%s.bin", filename);
350                 switch (compression) {
351                 case COMP_GZIP:
352                         strcpy(compcmd, "gzip");
353                         comp_name = "GZIP";
354                         break;
355                 case COMP_LZMA:
356                         strcpy(compcmd, "lzma");
357                         comp_name = "LZMA";
358                         break;
359                 default:
360                         errstr = "\nerror: unknown compression method";
361                         goto done;
362                 }
363                 strcat(compcmd, " > ");
364                 strcat(compcmd, compfilename);
365                 compfp = popen(compcmd, "w");
366                 if (!compfp) {
367                         errstr = "\nerror: popen() failed";
368                         goto done;
369                 }
370                 if (fwrite(image->data, image->size, 1, compfp) != 1) {
371                         errstr = "\nerror: writing data to gzip failed";
372                         goto done;
373                 }
374                 if (pclose(compfp)) {
375                         errstr = "\nerror: gzip process failed";
376                         goto done;
377                 }
378
379                 compfp = fopen(compfilename, "r");
380                 if (!compfp) {
381                         errstr = "\nerror: open() on gzip data failed";
382                         goto done;
383                 }
384                 if (stat(compfilename, &st)) {
385                         errstr = "\nerror: stat() on gzip file failed";
386                         goto done;
387                 }
388                 compressed = xmalloc(st.st_size);
389                 if (fread(compressed, st.st_size, 1, compfp) != 1) {
390                         errstr = "\nerror: reading gzip data failed";
391                         goto done;
392                 }
393                 fclose(compfp);
394
395                 unlink(compfilename);
396
397                 dataptr = compressed;
398                 count = st.st_size;
399                 fprintf(file, "#define EASYLOGO_ENABLE_%s %i\n\n", comp_name, count);
400                 if (bss_storage)
401                         fprintf (file, "static unsigned char EASYLOGO_DECOMP_BUFFER[%i];\n\n", image->size);
402
403  done:
404                 free(compfilename);
405                 free(compcmd);
406
407                 if (errstr) {
408                         perror (errstr);
409                         return -1;
410                 }
411         }
412
413         /*      Headers */
414         fprintf (file, "#include <video_easylogo.h>\n\n");
415         /*      Macros */
416         strcpy (def_name, varname);
417         StringUpperCase (def_name);
418         fprintf (file, "#define DEF_%s_WIDTH\t\t%d\n", def_name,
419                  image->width);
420         fprintf (file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name,
421                  image->height);
422         fprintf (file, "#define DEF_%s_PIXELS\t\t%d\n", def_name,
423                  image->pixels);
424         fprintf (file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp);
425         fprintf (file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name,
426                  image->pixel_size);
427         fprintf (file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name,
428                  image->size);
429         /*  Declaration */
430         fprintf (file, "unsigned char DEF_%s_DATA[] = {\n",
431                  def_name);
432
433         /*      Data */
434         while (count)
435                 switch (col) {
436                 case 0:
437                         sprintf (str, " 0x%02x", *dataptr++);
438                         col++;
439                         count--;
440                         break;
441
442                 case 16:
443                         fprintf (file, "%s", str);
444                         if (count > 0)
445                                 fprintf (file, ",");
446                         fprintf (file, "\n");
447
448                         col = 0;
449                         break;
450
451                 default:
452                         strcpy (app, str);
453                         sprintf (str, "%s, 0x%02x", app, *dataptr++);
454                         col++;
455                         count--;
456                         break;
457                 }
458
459         if (col)
460                 fprintf (file, "%s\n", str);
461
462         /*      End of declaration */
463         fprintf (file, "};\n\n");
464         /*      Variable */
465         fprintf (file, "fastimage_t %s = {\n", varname);
466         fprintf (file, "                DEF_%s_DATA,\n", def_name);
467         fprintf (file, "                DEF_%s_WIDTH,\n", def_name);
468         fprintf (file, "                DEF_%s_HEIGHT,\n", def_name);
469         fprintf (file, "                DEF_%s_BPP,\n", def_name);
470         fprintf (file, "                DEF_%s_PIXEL_SIZE,\n", def_name);
471         fprintf (file, "                DEF_%s_SIZE\n};\n", def_name);
472
473         fclose (file);
474
475         return 0;
476 }
477
478 #define DEF_FILELEN     256
479
480 static void usage (int exit_status)
481 {
482         puts (
483                 "EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n"
484                 "\n"
485                 "Syntax:        easylogo [options] inputfile [outputvar [outputfile]]\n"
486                 "\n"
487                 "Options:\n"
488                 "  -r     Output RGB888 instead of YUYV\n"
489                 "  -s     Output RGB565 instead of YUYV\n"
490                 "  -g     Compress with gzip\n"
491                 "  -l     Compress with lzma\n"
492                 "  -b     Preallocate space in bss for decompressing image\n"
493                 "  -h     Help output\n"
494                 "\n"
495                 "Where: 'inputfile'   is the TGA image to load\n"
496                 "       'outputvar'   is the variable name to create\n"
497                 "       'outputfile'  is the output header file (default is 'inputfile.h')"
498         );
499         exit (exit_status);
500 }
501
502 int main (int argc, char *argv[])
503 {
504         int c;
505         bool use_rgb888 = false;
506         bool use_rgb565 = false;
507         char inputfile[DEF_FILELEN],
508                 outputfile[DEF_FILELEN], varname[DEF_FILELEN];
509
510         image_t rgb888_logo, rgb565_logo, yuyv_logo;
511
512         while ((c = getopt(argc, argv, "hrsglb")) > 0) {
513                 switch (c) {
514                 case 'h':
515                         usage (0);
516                         break;
517                 case 'r':
518                         use_rgb888 = true;
519                         puts("Using 24-bit RGB888 Output Fromat");
520                         break;
521                 case 's':
522                         use_rgb565 = true;
523                         puts("Using 16-bit RGB565 Output Fromat");
524                         break;
525                 case 'g':
526                         compression = COMP_GZIP;
527                         puts("Compressing with gzip");
528                         break;
529                 case 'l':
530                         compression = COMP_LZMA;
531                         puts("Compressing with lzma");
532                         break;
533                 case 'b':
534                         bss_storage = true;
535                         puts("Preallocating bss space for decompressing image");
536                         break;
537                 default:
538                         usage (1);
539                         break;
540                 }
541         }
542
543         c = argc - optind;
544         if (c > 4 || c < 1)
545                 usage (1);
546
547         strcpy (inputfile, argv[optind]);
548
549         if (c > 1)
550                 strcpy (varname, argv[optind + 1]);
551         else {
552                 /* transform "input.tga" to just "input" */
553                 char *dot;
554                 strcpy (varname, inputfile);
555                 dot = strchr (varname, '.');
556                 if (dot)
557                         *dot = '\0';
558         }
559
560         if (c > 2)
561                 strcpy (outputfile, argv[optind + 2]);
562         else {
563                 /* just append ".h" to input file name */
564                 strcpy (outputfile, inputfile);
565                 strcat (outputfile, ".h");
566         }
567
568         /* Make sure the output is sent as soon as we printf() */
569         setbuf(stdout, NULL);
570
571         printf ("Doing '%s' (%s) from '%s'...",
572                 outputfile, varname, inputfile);
573
574         /* Import TGA logo */
575
576         printf ("L");
577         if (image_load_tga(&rgb888_logo, inputfile) < 0) {
578                 printf ("input file not found!\n");
579                 exit (1);
580         }
581
582         /* Convert, save, and free the image */
583
584         if (!use_rgb888 && !use_rgb565) {
585                 printf ("C");
586                 image_rgb_to_yuyv(&rgb888_logo, &yuyv_logo);
587
588                 printf("S");
589                 image_save_header(&yuyv_logo, outputfile, varname);
590                 image_free(&yuyv_logo);
591         } else if (use_rgb565) {
592                 printf("C");
593                 image_rgb888_to_rgb565(&rgb888_logo, &rgb565_logo);
594
595                 printf("S");
596                 image_save_header(&rgb565_logo, outputfile, varname);
597                 image_free(&rgb565_logo);
598         } else {
599                 printf("S");
600                 image_save_header(&rgb888_logo, outputfile, varname);
601         }
602
603         /* Free original image and copy */
604
605         image_free(&rgb888_logo);
606
607         printf ("\n");
608
609         return 0;
610 }