lib/gdi/picload.cpp

   1 #include <lib/gdi/picload.h>
   2 #include "picexif.h"
   3 #include <lib/python/python.h>
   4
   5 #include <png.h>
   6
   7 #include <fcntl.h>
   8 #include <unistd.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11
  12 extern "C" {
  13 #include <jpeglib.h>
  14 #include <gif_lib.h>
  15 //#include "transupp.h"
  16 }
  17 #include <setjmp.h>
  18
  19 unsigned char *pic_buffer=NULL;
  20
  21 static unsigned char *simple_resize(unsigned char * orgin, int ox, int oy, int dx, int dy)
  22 {
  23         unsigned char *cr, *p, *l;
  24         int i, j, k, ip;
  25         cr = new unsigned char[dx * dy * 3];
  26         if (cr == NULL)
  27         {
  28                 printf("[RESIZE] Error: malloc\n");
  29                 return(orgin);
  30         }
  31         l = cr;
  32
  33         for (j = 0; j < dy; j++,l += dx * 3)
  34         {
  35                 p = orgin + (j * oy / dy * ox * 3);
  36                 for (i = 0, k = 0; i < dx; i++, k += 3)
  37                 {
  38                         ip = i * ox / dx * 3;
  39                         l[k] = p[ip];
  40                         l[k+1] = p[ip + 1];
  41                         l[k+2] = p[ip + 2];
  42                 }
  43         }
  44         delete [] orgin;
  45         return(cr);
  46 }
  47
  48 static unsigned char *color_resize(unsigned char * orgin, int ox, int oy, int dx, int dy)
  49 {
  50         unsigned char *cr, *p, *q;
  51         int i, j, k, l, xa, xb, ya, yb;
  52         int sq, r, g, b;
  53         cr = new unsigned char[dx * dy * 3];
  54         if (cr == NULL)
  55         {
  56                 printf("[RESIZE] Error: malloc\n");
  57                 return(orgin);
  58         }
  59         p = cr;
  60
  61         for (j = 0; j < dy; j++)
  62         {
  63                 for (i = 0; i < dx; i++, p += 3)
  64                 {
  65                         xa = i * ox / dx;
  66                         ya = j * oy / dy;
  67                         xb = (i + 1) * ox / dx;
  68                         if (xb >= ox)
  69                                 xb = ox - 1;
  70                         yb = (j + 1) * oy / dy;
  71                         if (yb >= oy)
  72                                 yb = oy - 1;
  73                         for (l = ya, r = 0, g = 0, b = 0, sq = 0; l <= yb; l++)
  74                         {
  75                                 q = orgin + ((l * ox + xa) * 3);
  76                                 for (k = xa; k <= xb; k++, q += 3, sq++)
  77                                 {
  78                                         r += q[0]; g += q[1]; b += q[2];
  79                                 }
  80                         }
  81                         p[0] = r / sq; p[1] = g / sq; p[2] = b / sq;
  82                 }
  83         }
  84         delete [] orgin;
  85         return(cr);
  86 }
  87
  88 //-------------------------------------------------------------------
  89
  90 struct r_jpeg_error_mgr
  91 {
  92         struct jpeg_error_mgr pub;
  93         jmp_buf envbuffer;
  94 };
  95
  96 void jpeg_cb_error_exit(j_common_ptr cinfo)
  97 {
  98         struct r_jpeg_error_mgr *mptr;
  99         mptr = (struct r_jpeg_error_mgr *) cinfo->err;
 100         (*cinfo->err->output_message) (cinfo);
 101         longjmp(mptr->envbuffer, 1);
 102 }
 103
 104 static int jpeg_save(unsigned char *image_buffer, const char * filename, int quality, int image_height, int image_width)
 105 {
 106         struct jpeg_compress_struct cinfo;
 107         struct jpeg_error_mgr jerr;
 108         FILE * outfile;         /* target file */
 109         JSAMPROW row_pointer[1];/* pointer to JSAMPLE row[s] */
 110         int row_stride;         /* physical row width in image buffer */
 111
 112         cinfo.err = jpeg_std_error(&jerr);
 113         jpeg_create_compress(&cinfo);
 114
 115         if ((outfile = fopen(filename, "wb")) == NULL)
 116         {
 117                 eDebug("[JPEG] can't open %s", filename);
 118                 return -1;
 119         }
 120         jpeg_stdio_dest(&cinfo, outfile);
 121
 122         cinfo.image_width = image_width;
 123         cinfo.image_height = image_height;
 124         cinfo.input_components = 3;
 125         cinfo.in_color_space = JCS_RGB;
 126         jpeg_set_defaults(&cinfo);
 127         jpeg_set_quality(&cinfo, quality, TRUE );
 128         jpeg_start_compress(&cinfo, TRUE);
 129         row_stride = image_width * 3;
 130         while (cinfo.next_scanline < cinfo.image_height)
 131         {
 132                 row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
 133                 (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
 134         }
 135         jpeg_finish_compress(&cinfo);
 136         fclose(outfile);
 137         jpeg_destroy_compress(&cinfo);
 138         return 0;
 139 }
 140
 141
 142 static int jpeg_load(const char *filename, int *x, int *y)
 143 {
 144         struct jpeg_decompress_struct cinfo;
 145         struct jpeg_decompress_struct *ciptr = &cinfo;
 146         struct r_jpeg_error_mgr emgr;
 147         FILE *fh;
 148
 149         if (!(fh = fopen(filename, "rb")))
 150                 return 0;
 151
 152         ciptr->err = jpeg_std_error(&emgr.pub);
 153         emgr.pub.error_exit = jpeg_cb_error_exit;
 154         if (setjmp(emgr.envbuffer) == 1)
 155         {
 156                 jpeg_destroy_decompress(ciptr);
 157                 fclose(fh);
 158                 return 0;
 159         }
 160
 161         jpeg_create_decompress(ciptr);
 162         jpeg_stdio_src(ciptr, fh);
 163         jpeg_read_header(ciptr, TRUE);
 164         ciptr->out_color_space = JCS_RGB;
 165         ciptr->scale_denom = 1;
 166
 167         jpeg_start_decompress(ciptr);
 168
 169         *x=ciptr->output_width;
 170         *y=ciptr->output_height;
 171
 172         if(ciptr->output_components == 3)
 173         {
 174                 JSAMPLE *lb = (JSAMPLE *)(*ciptr->mem->alloc_small)((j_common_ptr) ciptr, JPOOL_PERMANENT, ciptr->output_width * ciptr->output_components);
 175                 pic_buffer = new unsigned char[ciptr->output_height * ciptr->output_width * ciptr->output_components];
 176                 unsigned char *bp = pic_buffer;
 177
 178                 while (ciptr->output_scanline < ciptr->output_height)
 179                 {
 180                         jpeg_read_scanlines(ciptr, &lb, 1);
 181                         memcpy(bp, lb, ciptr->output_width * ciptr->output_components);
 182                         bp += ciptr->output_width * ciptr->output_components;
 183                 }
 184         }
 185         jpeg_finish_decompress(ciptr);
 186         jpeg_destroy_decompress(ciptr);
 187         fclose(fh);
 188         return 1;
 189 }
 190
 191 //---------------------------------------------------------------------------------------------
 192
 193 #define BMP_TORASTER_OFFSET 10
 194 #define BMP_SIZE_OFFSET 18
 195 #define BMP_BPP_OFFSET 28
 196 #define BMP_RLE_OFFSET 30
 197 #define BMP_COLOR_OFFSET 54
 198
 199 #define fill4B(a) ((4 - ((a) % 4 )) & 0x03)
 200
 201 struct color {
 202         unsigned char red;
 203         unsigned char green;
 204         unsigned char blue;
 205 };
 206
 207 static void fetch_pallete(int fd, struct color pallete[], int count)
 208 {
 209         unsigned char buff[4];
 210         lseek(fd, BMP_COLOR_OFFSET, SEEK_SET);
 211         for (int i = 0; i < count; i++)
 212         {
 213                 read(fd, buff, 4);
 214                 pallete[i].red = buff[2];
 215                 pallete[i].green = buff[1];
 216                 pallete[i].blue = buff[0];
 217         }
 218 }
 219
 220 static int bmp_load(const char *filename,  int *x, int *y)
 221 {
 222         unsigned char buff[4];
 223         struct color pallete[256];
 224
 225         int fd = open(filename, O_RDONLY);
 226         if (fd == -1) return 0;
 227         if (lseek(fd, BMP_SIZE_OFFSET, SEEK_SET) == -1) return 0;
 228         read(fd, buff, 4);
 229         *x = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 230         read(fd, buff, 4);
 231         *y = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 232         if (lseek(fd, BMP_TORASTER_OFFSET, SEEK_SET) == -1) return 0;
 233         read(fd, buff, 4);
 234         int raster = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 235         if (lseek(fd, BMP_BPP_OFFSET, SEEK_SET) == -1) return 0;
 236         read(fd, buff, 2);
 237         int bpp = buff[0] + (buff[1] << 8);
 238
 239         pic_buffer = new unsigned char[(*x) * (*y) * 3];
 240         unsigned char *wr_buffer = pic_buffer + (*x) * ((*y) - 1) * 3;
 241
 242         switch (bpp)
 243         {
 244                 case 4:
 245                 {
 246                         int skip = fill4B((*x) / 2 + (*x) % 2);
 247                         fetch_pallete(fd, pallete, 16);
 248                         lseek(fd, raster, SEEK_SET);
 249                         unsigned char * tbuffer = new unsigned char[*x / 2 + 1];
 250                         if (tbuffer == NULL)
 251                                 return 0;
 252                         for (int i = 0; i < *y; i++)
 253                         {
 254                                 read(fd, tbuffer, (*x) / 2 + *x % 2);
 255                                 int j;
 256                                 for (j = 0; j < (*x) / 2; j++)
 257                                 {
 258                                         unsigned char c1 = tbuffer[j] >> 4;
 259                                         unsigned char c2 = tbuffer[j] & 0x0f;
 260                                         *wr_buffer++ = pallete[c1].red;
 261                                         *wr_buffer++ = pallete[c1].green;
 262                                         *wr_buffer++ = pallete[c1].blue;
 263                                         *wr_buffer++ = pallete[c2].red;
 264                                         *wr_buffer++ = pallete[c2].green;
 265                                         *wr_buffer++ = pallete[c2].blue;
 266                                 }
 267                                 if ((*x) % 2)
 268                                 {
 269                                         unsigned char c1 = tbuffer[j] >> 4;
 270                                         *wr_buffer++ = pallete[c1].red;
 271                                         *wr_buffer++ = pallete[c1].green;
 272                                         *wr_buffer++ = pallete[c1].blue;
 273                                 }
 274                                 if (skip)
 275                                         read(fd, buff, skip);
 276                                 wr_buffer -= (*x) * 6;
 277                         }
 278                         break;
 279                 }
 280                 case 8:
 281                 {
 282                         int skip = fill4B(*x);
 283                         fetch_pallete(fd, pallete, 256);
 284                         lseek(fd, raster, SEEK_SET);
 285                         unsigned char * tbuffer = new unsigned char[*x];
 286                         if (tbuffer == NULL)
 287                                 return 0;
 288                         for (int i = 0; i < *y; i++)
 289                         {
 290                                 read(fd, tbuffer, *x);
 291                                 for (int j = 0; j < *x; j++)
 292                                 {
 293                                         wr_buffer[j * 3] = pallete[tbuffer[j]].red;
 294                                         wr_buffer[j * 3 + 1] = pallete[tbuffer[j]].green;
 295                                         wr_buffer[j * 3 + 2] = pallete[tbuffer[j]].blue;
 296                                 }
 297                                 if (skip)
 298                                         read(fd, buff, skip);
 299                                 wr_buffer -= (*x) * 3;
 300                         }
 301                         break;
 302                 }
 303                 case 24:
 304                 {
 305                         int skip = fill4B((*x) * 3);
 306                         lseek(fd, raster, SEEK_SET);
 307                         for (int i = 0; i < (*y); i++)
 308                         {
 309                                 read(fd, wr_buffer, (*x) * 3);
 310                                 for (int j = 0; j < (*x) * 3 ; j = j + 3)
 311                                 {
 312                                         unsigned char c = wr_buffer[j];
 313                                         wr_buffer[j] = wr_buffer[j + 2];
 314                                         wr_buffer[j + 2] = c;
 315                                 }
 316                                 if (skip)
 317                                         read(fd, buff, skip);
 318                                 wr_buffer -= (*x) * 3;
 319                         }
 320                         break;
 321                 }
 322                 default:
 323                         return 0;
 324         }
 325
 326         close(fd);
 327         return 1;
 328 }
 329
 330 //---------------------------------------------------------------------------------------------
 331
 332 static int png_load(const char *filename,  int *x, int *y)
 333 {
 334         static const png_color_16 my_background = {0, 0, 0, 0, 0};
 335
 336         png_structp png_ptr;
 337         png_infop info_ptr;
 338         png_uint_32 width, height;
 339         unsigned int i;
 340         int bit_depth, color_type, interlace_type;
 341         int number_passes, pass;
 342         png_byte * fbptr;
 343         FILE * fh;
 344
 345         if (!(fh = fopen(filename, "rb"))) return 0;
 346
 347         png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 348         if (png_ptr == NULL)
 349                 return 0;
 350         info_ptr = png_create_info_struct(png_ptr);
 351         if (info_ptr == NULL)
 352         {
 353                 png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
 354                 fclose(fh);
 355                 return 0;
 356         }
 357
 358         if (setjmp(png_ptr->jmpbuf))
 359         {
 360                 png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 361                 fclose(fh);
 362                 return 0;
 363         }
 364
 365         png_init_io(png_ptr, fh);
 366
 367         png_read_info(png_ptr, info_ptr);
 368         png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, NULL, NULL);
 369
 370         if (color_type == PNG_COLOR_TYPE_PALETTE)
 371         {
 372                 png_set_palette_to_rgb(png_ptr);
 373                 png_set_background(png_ptr, (png_color_16 *)&my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 374         }
 375
 376         if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
 377         {
 378                 png_set_gray_to_rgb(png_ptr);
 379                 png_set_background(png_ptr, (png_color_16 *)&my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 380         }
 381
 382         if (color_type & PNG_COLOR_MASK_ALPHA)
 383                 png_set_strip_alpha(png_ptr);
 384
 385         if (bit_depth < 8)      png_set_packing(png_ptr);
 386         if (bit_depth == 16)    png_set_strip_16(png_ptr);
 387
 388         number_passes = png_set_interlace_handling(png_ptr);
 389         png_read_update_info(png_ptr, info_ptr);
 390
 391         if (width * 3 != png_get_rowbytes(png_ptr, info_ptr))
 392         {
 393                 eDebug("[PNG] Error processing");
 394                 return 0;
 395         }
 396
 397         if (width * height > 1000000) // 1000x1000 or equiv.
 398         {
 399                 eDebug("[png_load] image size is %d x %d, which is \"too large\".", width, height);
 400                 png_read_end(png_ptr, info_ptr);
 401                 png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 402                 fclose(fh);
 403                 return 0;
 404         }
 405
 406         pic_buffer = new unsigned char[width * height * 3];
 407         *x=width;
 408         *y=height;
 409
 410         for(pass = 0; pass < number_passes; pass++)
 411         {
 412                 fbptr = (png_byte *)pic_buffer;
 413                 for (i = 0; i < height; i++, fbptr += width * 3)
 414                         png_read_row(png_ptr, fbptr, NULL);
 415         }
 416         png_read_end(png_ptr, info_ptr);
 417         png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 418         fclose(fh);
 419         return 1;
 420 }
 421
 422 //-------------------------------------------------------------------
 423
 424 inline void m_rend_gif_decodecolormap(unsigned char *cmb, unsigned char *rgbb, ColorMapObject *cm, int s, int l)
 425 {
 426         GifColorType *cmentry;
 427         int i;
 428         for (i = 0; i < l; i++)
 429         {
 430                 cmentry = &cm->Colors[cmb[i]];
 431                 *(rgbb++) = cmentry->Red;
 432                 *(rgbb++) = cmentry->Green;
 433                 *(rgbb++) = cmentry->Blue;
 434         }
 435 }
 436
 437 static int gif_load(const char *filename, int *x, int *y)
 438 {
 439         int px, py, i, j, ibxs;
 440         unsigned char *fbptr;
 441         unsigned char *lb=NULL;
 442         unsigned char *slb=NULL;
 443         GifFileType *gft;
 444         GifRecordType rt;
 445         GifByteType *extension;
 446         ColorMapObject *cmap;
 447         int cmaps;
 448         int extcode;
 449
 450         gft = DGifOpenFileName(filename);
 451         if (gft == NULL)
 452                 return 0;
 453         do
 454         {
 455                 if (DGifGetRecordType(gft, &rt) == GIF_ERROR)
 456                         goto ERROR_R;
 457                 switch(rt)
 458                 {
 459                         case IMAGE_DESC_RECORD_TYPE:
 460                                 if (DGifGetImageDesc(gft) == GIF_ERROR)
 461                                         goto ERROR_R;
 462                                 *x = px = gft->Image.Width;
 463                                 *y = py = gft->Image.Height;
 464                                 pic_buffer = new unsigned char[px * py * 3];
 465                                 lb = (unsigned char *)malloc(px * 3);
 466                                 slb = (unsigned char *) malloc(px);
 467
 468                                 if (lb != NULL && slb != NULL)
 469                                 {
 470                                         cmap = (gft->Image.ColorMap ? gft->Image.ColorMap : gft->SColorMap);
 471                                         cmaps = cmap->ColorCount;
 472
 473                                         ibxs = ibxs * 3;
 474                                         fbptr = pic_buffer;
 475                                         if (!(gft->Image.Interlace))
 476                                         {
 477                                                 for (i = 0; i < py; i++, fbptr += px * 3)
 478                                                 {
 479                                                         if (DGifGetLine(gft, slb, px) == GIF_ERROR)
 480                                                                 goto ERROR_R;
 481                                                         m_rend_gif_decodecolormap(slb, lb, cmap, cmaps, px);
 482                                                         memcpy(fbptr, lb, px * 3);
 483                                                 }
 484                                         }
 485                                         else
 486                                         {
 487                                                 for (j = 0; j < 4; j++)
 488                                                 {
 489                                                         fbptr = pic_buffer;
 490                                                         for (i = 0; i < py; i++, fbptr += px * 3)
 491                                                         {
 492                                                                 if (DGifGetLine(gft, slb, px) == GIF_ERROR)
 493                                                                         goto ERROR_R;
 494                                                                 m_rend_gif_decodecolormap(slb, lb, cmap, cmaps, px);
 495                                                                 memcpy(fbptr, lb, px * 3);
 496                                                         }
 497                                                 }
 498                                         }
 499                                 }
 500                                 if (lb)
 501                                 {
 502                                         free(lb);
 503                                         lb=NULL;
 504                                 }
 505                                 if (slb)
 506                                 {
 507                                         free(slb);
 508                                         slb=NULL;
 509                                 }
 510                                 break;
 511                         case EXTENSION_RECORD_TYPE:
 512                                 if (DGifGetExtension(gft, &extcode, &extension) == GIF_ERROR)
 513                                         goto ERROR_R;
 514                                 while (extension != NULL)
 515                                         if (DGifGetExtensionNext(gft, &extension) == GIF_ERROR)
 516                                                 goto ERROR_R;
 517                                 break;
 518                         default:
 519                                 break;
 520                 }
 521         }
 522         while (rt != TERMINATE_RECORD_TYPE);
 523
 524         DGifCloseFile(gft);
 525         return 1;
 526 ERROR_R:
 527         eDebug("[GIF] Error");
 528         if (lb)         free(lb);
 529         if (slb)        free(slb);
 530         DGifCloseFile(gft);
 531         return 0;
 532 }
 533
 534 //---------------------------------------------------------------------------------------------
 535
 536 PyObject *getExif(const char *filename)
 537 {
 538         ePyObject list;
 539         Cexif exif;
 540         if(exif.DecodeExif(filename))
 541         {
 542                 if(exif.m_exifinfo->IsExif)
 543                 {
 544                         int pos=0;
 545                         char tmp[256];
 546                         list = PyList_New(22);
 547                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->Version));
 548                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->CameraMake));
 549                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->CameraModel));
 550                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->DateTime));
 551                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->Comments));
 552                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d x %d", exif.m_exifinfo->Width, exif.m_exifinfo->Height));
 553                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->Orientation));
 554                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->MeteringMode));
 555                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->ExposureProgram));
 556                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->LightSource));
 557                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->FlashUsed));
 558                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", exif.m_exifinfo->CompressionLevel));
 559                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", exif.m_exifinfo->ISOequivalent));
 560                         sprintf(tmp, "%.2f", exif.m_exifinfo->Xresolution);
 561                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 562                         sprintf(tmp, "%.2f", exif.m_exifinfo->Yresolution);
 563                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 564                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif.m_exifinfo->ResolutionUnit));
 565                         sprintf(tmp, "%.2f", exif.m_exifinfo->Brightness);
 566                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 567                         sprintf(tmp, "%.5f sec.", exif.m_exifinfo->ExposureTime);
 568                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 569                         sprintf(tmp, "%.5f", exif.m_exifinfo->ExposureBias);
 570                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 571                         sprintf(tmp, "%.5f", exif.m_exifinfo->Distance);
 572                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 573                         sprintf(tmp, "%.5f", exif.m_exifinfo->CCDWidth);
 574                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 575                         sprintf(tmp, "%.2f", exif.m_exifinfo->ApertureFNumber);
 576                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 577                 }
 578                 else
 579                 {
 580                         list = PyList_New(1);
 581                         PyList_SET_ITEM(list, 0, PyString_FromString(exif.m_szLastError));
 582                 }
 583                 exif.ClearExif();
 584         }
 585         else
 586         {
 587                 list = PyList_New(1);
 588                 PyList_SET_ITEM(list, 0, PyString_FromString(exif.m_szLastError));
 589         }
 590
 591         return list ? (PyObject*)list : (PyObject*)PyList_New(0);
 592 }
 593
 594 //---------------------------------------------------------------------------------------------
 595 enum {F_NONE, F_PNG, F_JPEG, F_BMP, F_GIF};
 596
 597 static int pic_id(const char *name)
 598 {
 599         unsigned char id[10];
 600         int fd = open(name, O_RDONLY);
 601         if (fd == -1)
 602                 return F_NONE;
 603         read(fd, id, 10);
 604         close(fd);
 605
 606         if(id[1] == 'P' && id[2] == 'N' && id[3] == 'G')
 607                 return F_PNG;
 608         else if(id[6] == 'J' && id[7] == 'F' && id[8] == 'I' && id[9] == 'F')
 609                 return F_JPEG;
 610         else if(id[0] == 0xff && id[1] == 0xd8 && id[2] == 0xff)
 611                 return F_JPEG;
 612         else if(id[0] == 'B' && id[1] == 'M' )
 613                 return F_BMP;
 614         else if(id[0] == 'G' && id[1] == 'I' && id[2] == 'F')
 615                 return F_GIF;
 616         return F_NONE;
 617 }
 618
 619 int loadPic(ePtr<gPixmap> &result, std::string filename, int w, int h, int aspect, int resize_mode, int rotate, int background, std::string cachefile)
 620 {
 621         result = 0;
 622         int ox=0, oy=0, imx, imy;
 623         pic_buffer=NULL;
 624         bool cache=false;
 625
 626         if(cachefile.length())
 627         {
 628                 cache = true;
 629                 if(jpeg_load(cachefile.c_str(), &ox, &oy))
 630                         eDebug("[CACHEPIC] x-size=%d, y-size=%d", ox, oy);
 631         }
 632
 633         if(pic_buffer==NULL)
 634         {
 635                 switch(pic_id(filename.c_str()))
 636                 {
 637                         case F_PNG:     png_load(filename.c_str(), &ox, &oy); break;
 638                         case F_JPEG:    jpeg_load(filename.c_str(), &ox, &oy); break;
 639                         case F_BMP:     bmp_load(filename.c_str(), &ox, &oy); break;
 640                         case F_GIF:     gif_load(filename.c_str(), &ox, &oy); break;
 641                         default:
 642                                 eDebug("[PIC] <format not supportet>");
 643                                 return 0;
 644                 }
 645
 646                 eDebug("[FULLPIC] x-size=%d, y-size=%d", ox, oy);
 647
 648                 if(pic_buffer==NULL)
 649                         return 0;
 650
 651                 double aspect_ratio;
 652                 switch(aspect)
 653                 {
 654                         case 1:         aspect_ratio = 1.778 / ((double)702/576); break; //16:9
 655                         case 2:         aspect_ratio = 1.600 / ((double)702/576); break; //16:10
 656                         //case 3:       aspect_ratio = 1.250 / ((double)702/576); break; //5:4
 657                         default:        aspect_ratio = 1.333 / ((double)702/576); //4:3
 658                 }
 659
 660                 if((aspect_ratio * oy * w / ox) <= h)
 661                 {
 662                         imx = w;
 663                         imy = (int)(aspect_ratio*oy*w/ox);
 664                 }
 665                 else
 666                 {
 667                         imx = (int)((1.0/aspect_ratio)*ox*h/oy);
 668                         imy = h;
 669                 }
 670
 671                 if(resize_mode) pic_buffer = color_resize(pic_buffer, ox, oy, imx, imy);
 672                 else            pic_buffer = simple_resize(pic_buffer, ox, oy, imx, imy);
 673
 674                 ox = imx;
 675                 oy = imy;
 676
 677                 if(cache)
 678                 {
 679                         jpeg_save(pic_buffer, cachefile.c_str(), 50, oy, ox);
 680                         eDebug("[SAVEPIC] x-size=%d, y-size=%d", ox, oy);
 681                 }
 682
 683         }
 684
 685
 686         result=new gPixmap(eSize(w, h), 32);
 687         gSurface *surface = result->surface;
 688         int a=0, b=0;
 689         int nc=0, oc=0;
 690         int o_y=0, u_y=0, v_x=0, h_x=0;
 691         unsigned char clear[4] = {0x00,0x00,0x00,0x00};
 692         if(background)  clear[3]=0xFF;
 693         unsigned char *tmp_buffer = new unsigned char[4];
 694
 695         if(oy < h)
 696         {
 697                 o_y=(h-oy)/2;
 698                 u_y=h-oy-o_y;
 699         }
 700         if(ox < w)
 701         {
 702                 v_x=(w-ox)/2;
 703                 h_x=w-ox-v_x;
 704         }
 705
 706         //eDebug("o_y=%d u_y=%d v_x=%d h_x=%d", o_y, u_y, v_x, h_x);
 707
 708         if(oy < h)
 709                 for(a=0; a<(o_y*ox)+1; a++, nc+=4)
 710                 {
 711                         memcpy(tmp_buffer, clear, sizeof(clear));
 712                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 713                 }
 714
 715         for(a=0; a<oy; a++)
 716         {
 717                 if(ox < w)
 718                         for(b=0; b<v_x; b++, nc+=4)
 719                         {
 720                                 memcpy(tmp_buffer, clear, sizeof(clear));
 721                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 722                         }
 723
 724                 for(b=0; b<(ox*3); b+=3, nc+=4)
 725                 {
 726                         tmp_buffer[3]=0xFF;
 727                         tmp_buffer[2]=pic_buffer[oc++];
 728                         tmp_buffer[1]=pic_buffer[oc++];
 729                         tmp_buffer[0]=pic_buffer[oc++];
 730
 731                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 732                 }
 733
 734                 if(ox < w)
 735                         for(b=0; b<h_x; b++, nc+=4)
 736                         {
 737                                 memcpy(tmp_buffer, clear, sizeof(clear));
 738                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 739                         }
 740         }
 741
 742         if(oy < h)
 743                 for(a=0; a<(u_y*ox)+1; a++, nc+=4)
 744                 {
 745                         memcpy(tmp_buffer, clear, sizeof(clear));
 746                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 747                 }
 748
 749         //eDebug("[PIC] buffer=%d, nc=%d oc=%d ox=%d, oy=%d",w*h*4, nc, oc, ox, oy);
 750
 751         surface->clut.data=0;
 752         surface->clut.colors=0;
 753         surface->clut.start=0;
 754
 755         delete [] pic_buffer;
 756
 757         return 0;
 758 }