lib/gdi/picload.cpp

   1 #include <png.h>        // must be included before Python.h because of setjmp
   2 #include <fcntl.h>
   3
   4 #include <lib/gdi/picload.h>
   5 #include <lib/gdi/picexif.h>
   6
   7 extern "C" {
   8 #include <jpeglib.h>
   9 #include <gif_lib.h>
  10 }
  11
  12 extern const uint32_t crc32_table[256];
  13
  14 DEFINE_REF(ePicLoad);
  15
  16 static std::string getSize(const char* file)
  17 {
  18         struct stat64 s;
  19         if (stat64(file, &s) < 0)
  20                 return "";
  21         char tmp[20];
  22         snprintf(tmp, 20, "%ld kB",(long)s.st_size / 1024);
  23         return tmp;
  24 }
  25
  26 static unsigned char *conv24to32(unsigned char *orgin, int size, unsigned char alpha = 0xFF)
  27 {
  28         int s, d;
  29         unsigned char *cr = new unsigned char[size * 4];
  30         if (cr == NULL)
  31         {
  32                 eDebug("[Picload] Error malloc");
  33                 return(orgin);
  34         }
  35
  36         for (s = 0, d = 0 ; s < (size * 3); s += 3, d += 4 )
  37         {
  38                 cr[d] = orgin[s];
  39                 cr[d+1] = orgin[s + 1];
  40                 cr[d+2] = orgin[s + 2];
  41                 cr[d+3] = alpha;
  42         }
  43         delete [] orgin;
  44         return(cr);
  45 }
  46
  47 static unsigned char *simple_resize(unsigned char *orgin, int ox, int oy, int dx, int dy)
  48 {
  49         unsigned char *cr, *p, *l;
  50         int i, j, k, ip;
  51         cr = new unsigned char[dx * dy * 3];
  52         if (cr == NULL)
  53         {
  54                 eDebug("[Picload] Error malloc");
  55                 return(orgin);
  56         }
  57         l = cr;
  58
  59         for (j = 0; j < dy; j++,l += dx * 3)
  60         {
  61                 p = orgin + (j * oy / dy * ox * 3);
  62                 for (i = 0, k = 0; i < dx; i++, k += 3)
  63                 {
  64                         ip = i * ox / dx * 3;
  65                         l[k] = p[ip];
  66                         l[k+1] = p[ip + 1];
  67                         l[k+2] = p[ip + 2];
  68                 }
  69         }
  70         delete [] orgin;
  71         return(cr);
  72 }
  73
  74 static unsigned char *color_resize(unsigned char * orgin, int ox, int oy, int dx, int dy)
  75 {
  76         unsigned char *cr, *p, *q;
  77         int i, j, k, l, xa, xb, ya, yb;
  78         int sq, r, g, b;
  79         cr = new unsigned char[dx * dy * 3];
  80         if (cr == NULL)
  81         {
  82                 eDebug("[Picload] Error malloc");
  83                 return(orgin);
  84         }
  85         p = cr;
  86
  87         for (j = 0; j < dy; j++)
  88         {
  89                 for (i = 0; i < dx; i++, p += 3)
  90                 {
  91                         xa = i * ox / dx;
  92                         ya = j * oy / dy;
  93                         xb = (i + 1) * ox / dx;
  94                         if (xb >= ox)
  95                                 xb = ox - 1;
  96                         yb = (j + 1) * oy / dy;
  97                         if (yb >= oy)
  98                                 yb = oy - 1;
  99                         for (l = ya, r = 0, g = 0, b = 0, sq = 0; l <= yb; l++)
 100                         {
 101                                 q = orgin + ((l * ox + xa) * 3);
 102                                 for (k = xa; k <= xb; k++, q += 3, sq++)
 103                                 {
 104                                         r += q[0]; g += q[1]; b += q[2];
 105                                 }
 106                         }
 107                         p[0] = r / sq; p[1] = g / sq; p[2] = b / sq;
 108                 }
 109         }
 110         delete [] orgin;
 111         return(cr);
 112 }
 113
 114 //---------------------------------------------------------------------------------------------
 115
 116 #define BMP_TORASTER_OFFSET 10
 117 #define BMP_SIZE_OFFSET 18
 118 #define BMP_BPP_OFFSET 28
 119 #define BMP_RLE_OFFSET 30
 120 #define BMP_COLOR_OFFSET 54
 121
 122 #define fill4B(a) ((4 - ((a) % 4 )) & 0x03)
 123
 124 struct color {
 125         unsigned char red;
 126         unsigned char green;
 127         unsigned char blue;
 128 };
 129
 130 static void fetch_pallete(int fd, struct color pallete[], int count)
 131 {
 132         unsigned char buff[4];
 133         lseek(fd, BMP_COLOR_OFFSET, SEEK_SET);
 134         for (int i = 0; i < count; i++)
 135         {
 136                 read(fd, buff, 4);
 137                 pallete[i].red = buff[2];
 138                 pallete[i].green = buff[1];
 139                 pallete[i].blue = buff[0];
 140         }
 141 }
 142
 143 static unsigned char *bmp_load(const char *file,  int *x, int *y)
 144 {
 145         unsigned char buff[4];
 146         struct color pallete[256];
 147
 148         int fd = open(file, O_RDONLY);
 149         if (fd == -1) return NULL;
 150         if (lseek(fd, BMP_SIZE_OFFSET, SEEK_SET) == -1) return NULL;
 151         read(fd, buff, 4);
 152         *x = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 153         read(fd, buff, 4);
 154         *y = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 155         if (lseek(fd, BMP_TORASTER_OFFSET, SEEK_SET) == -1) return NULL;
 156         read(fd, buff, 4);
 157         int raster = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 158         if (lseek(fd, BMP_BPP_OFFSET, SEEK_SET) == -1) return NULL;
 159         read(fd, buff, 2);
 160         int bpp = buff[0] + (buff[1] << 8);
 161
 162         unsigned char *pic_buffer = new unsigned char[(*x) * (*y) * 3];
 163         unsigned char *wr_buffer = pic_buffer + (*x) * ((*y) - 1) * 3;
 164
 165         switch (bpp)
 166         {
 167                 case 4:
 168                 {
 169                         int skip = fill4B((*x) / 2 + (*x) % 2);
 170                         fetch_pallete(fd, pallete, 16);
 171                         lseek(fd, raster, SEEK_SET);
 172                         unsigned char * tbuffer = new unsigned char[*x / 2 + 1];
 173                         if (tbuffer == NULL)
 174                                 return NULL;
 175                         for (int i = 0; i < *y; i++)
 176                         {
 177                                 read(fd, tbuffer, (*x) / 2 + *x % 2);
 178                                 int j;
 179                                 for (j = 0; j < (*x) / 2; j++)
 180                                 {
 181                                         unsigned char c1 = tbuffer[j] >> 4;
 182                                         unsigned char c2 = tbuffer[j] & 0x0f;
 183                                         *wr_buffer++ = pallete[c1].red;
 184                                         *wr_buffer++ = pallete[c1].green;
 185                                         *wr_buffer++ = pallete[c1].blue;
 186                                         *wr_buffer++ = pallete[c2].red;
 187                                         *wr_buffer++ = pallete[c2].green;
 188                                         *wr_buffer++ = pallete[c2].blue;
 189                                 }
 190                                 if ((*x) % 2)
 191                                 {
 192                                         unsigned char c1 = tbuffer[j] >> 4;
 193                                         *wr_buffer++ = pallete[c1].red;
 194                                         *wr_buffer++ = pallete[c1].green;
 195                                         *wr_buffer++ = pallete[c1].blue;
 196                                 }
 197                                 if (skip)
 198                                         read(fd, buff, skip);
 199                                 wr_buffer -= (*x) * 6;
 200                         }
 201                         break;
 202                 }
 203                 case 8:
 204                 {
 205                         int skip = fill4B(*x);
 206                         fetch_pallete(fd, pallete, 256);
 207                         lseek(fd, raster, SEEK_SET);
 208                         unsigned char * tbuffer = new unsigned char[*x];
 209                         if (tbuffer == NULL)
 210                                 return NULL;
 211                         for (int i = 0; i < *y; i++)
 212                         {
 213                                 read(fd, tbuffer, *x);
 214                                 for (int j = 0; j < *x; j++)
 215                                 {
 216                                         wr_buffer[j * 3] = pallete[tbuffer[j]].red;
 217                                         wr_buffer[j * 3 + 1] = pallete[tbuffer[j]].green;
 218                                         wr_buffer[j * 3 + 2] = pallete[tbuffer[j]].blue;
 219                                 }
 220                                 if (skip)
 221                                         read(fd, buff, skip);
 222                                 wr_buffer -= (*x) * 3;
 223                         }
 224                         break;
 225                 }
 226                 case 24:
 227                 {
 228                         int skip = fill4B((*x) * 3);
 229                         lseek(fd, raster, SEEK_SET);
 230                         for (int i = 0; i < (*y); i++)
 231                         {
 232                                 read(fd, wr_buffer, (*x) * 3);
 233                                 for (int j = 0; j < (*x) * 3 ; j = j + 3)
 234                                 {
 235                                         unsigned char c = wr_buffer[j];
 236                                         wr_buffer[j] = wr_buffer[j + 2];
 237                                         wr_buffer[j + 2] = c;
 238                                 }
 239                                 if (skip)
 240                                         read(fd, buff, skip);
 241                                 wr_buffer -= (*x) * 3;
 242                         }
 243                         break;
 244                 }
 245                 default:
 246                         return NULL;
 247         }
 248
 249         close(fd);
 250         return(pic_buffer);
 251 }
 252
 253 //---------------------------------------------------------------------
 254
 255 static unsigned char *png_load(const char *file, int *ox, int *oy)
 256 {
 257         static const png_color_16 my_background = {0, 0, 0, 0, 0};
 258
 259         png_uint_32 width, height;
 260         unsigned int i;
 261         int bit_depth, color_type, interlace_type;
 262         png_byte *fbptr;
 263         FILE *fh;
 264
 265         if (!(fh = fopen(file, "rb")))
 266                 return NULL;
 267
 268         png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 269         if (png_ptr == NULL)
 270                 return NULL;
 271         png_infop info_ptr = png_create_info_struct(png_ptr);
 272         if (info_ptr == NULL)
 273         {
 274                 png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
 275                 fclose(fh);
 276                 return NULL;
 277         }
 278
 279         if (setjmp(png_ptr->jmpbuf))
 280         {
 281                 png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 282                 fclose(fh);
 283                 return NULL;
 284         }
 285
 286         png_init_io(png_ptr, fh);
 287
 288         png_read_info(png_ptr, info_ptr);
 289         png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, NULL, NULL);
 290
 291         if ((color_type == PNG_COLOR_TYPE_PALETTE)||(color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)||(png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
 292                 png_set_expand(png_ptr);
 293         if (bit_depth == 16)
 294                 png_set_strip_16(png_ptr);
 295         if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
 296                 png_set_gray_to_rgb(png_ptr);
 297
 298         int number_passes = png_set_interlace_handling(png_ptr);
 299         png_read_update_info(png_ptr, info_ptr);
 300
 301         if (width * 3 != png_get_rowbytes(png_ptr, info_ptr))
 302         {
 303                 eDebug("[Picload] Error processing");
 304                 png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 305                 fclose(fh);
 306                 return NULL;
 307         }
 308
 309         unsigned char *pic_buffer = new unsigned char[height * width * 3];
 310         *ox=width;
 311         *oy=height;
 312
 313         for(int pass = 0; pass < number_passes; pass++)
 314         {
 315                 fbptr = (png_byte *)pic_buffer;
 316                 for (i = 0; i < height; i++, fbptr += width * 3)
 317                         png_read_row(png_ptr, fbptr, NULL);
 318         }
 319         png_read_end(png_ptr, info_ptr);
 320         png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 321         fclose(fh);
 322         return(pic_buffer);
 323 }
 324
 325 //-------------------------------------------------------------------
 326
 327 struct r_jpeg_error_mgr
 328 {
 329         struct jpeg_error_mgr pub;
 330         jmp_buf envbuffer;
 331 };
 332
 333 void jpeg_cb_error_exit(j_common_ptr cinfo)
 334 {
 335         struct r_jpeg_error_mgr *mptr;
 336         mptr = (struct r_jpeg_error_mgr *) cinfo->err;
 337         (*cinfo->err->output_message) (cinfo);
 338         longjmp(mptr->envbuffer, 1);
 339 }
 340
 341 static unsigned char *jpeg_load(const char *file, int *ox, int *oy)
 342 {
 343         struct jpeg_decompress_struct cinfo;
 344         struct jpeg_decompress_struct *ciptr = &cinfo;
 345         struct r_jpeg_error_mgr emgr;
 346         FILE *fh;
 347         unsigned char *pic_buffer=NULL;
 348
 349         if (!(fh = fopen(file, "rb")))
 350                 return NULL;
 351
 352         ciptr->err = jpeg_std_error(&emgr.pub);
 353         emgr.pub.error_exit = jpeg_cb_error_exit;
 354         if (setjmp(emgr.envbuffer) == 1)
 355         {
 356                 jpeg_destroy_decompress(ciptr);
 357                 fclose(fh);
 358                 return NULL;
 359         }
 360
 361         jpeg_create_decompress(ciptr);
 362         jpeg_stdio_src(ciptr, fh);
 363         jpeg_read_header(ciptr, TRUE);
 364         ciptr->out_color_space = JCS_RGB;
 365         ciptr->scale_denom = 1;
 366
 367         jpeg_start_decompress(ciptr);
 368
 369         *ox=ciptr->output_width;
 370         *oy=ciptr->output_height;
 371
 372         if(ciptr->output_components == 3)
 373         {
 374                 JSAMPLE *lb = (JSAMPLE *)(*ciptr->mem->alloc_small)((j_common_ptr) ciptr, JPOOL_PERMANENT, ciptr->output_width * ciptr->output_components);
 375                 pic_buffer = new unsigned char[ciptr->output_height * ciptr->output_width * ciptr->output_components];
 376                 unsigned char *bp = pic_buffer;
 377
 378                 while (ciptr->output_scanline < ciptr->output_height)
 379                 {
 380                         jpeg_read_scanlines(ciptr, &lb, 1);
 381                         memcpy(bp, lb, ciptr->output_width * ciptr->output_components);
 382                         bp += ciptr->output_width * ciptr->output_components;
 383                 }
 384         }
 385         jpeg_finish_decompress(ciptr);
 386         jpeg_destroy_decompress(ciptr);
 387         fclose(fh);
 388         return(pic_buffer);
 389 }
 390
 391
 392 static int jpeg_save(const char * filename, int ox, int oy, unsigned char *pic_buffer)
 393 {
 394         struct jpeg_compress_struct cinfo;
 395         struct jpeg_error_mgr jerr;
 396         FILE * outfile;
 397         JSAMPROW row_pointer[1];
 398         int row_stride;
 399
 400         cinfo.err = jpeg_std_error(&jerr);
 401         jpeg_create_compress(&cinfo);
 402
 403         if ((outfile = fopen(filename, "wb")) == NULL)
 404         {
 405                 eDebug("[Picload] jpeg can't open %s", filename);
 406                 return 1;
 407         }
 408         eDebug("[Picload] save Thumbnail... %s",filename);
 409
 410         jpeg_stdio_dest(&cinfo, outfile);
 411
 412         cinfo.image_width = ox;
 413         cinfo.image_height = oy;
 414         cinfo.input_components = 3;
 415         cinfo.in_color_space = JCS_RGB;
 416         jpeg_set_defaults(&cinfo);
 417         jpeg_set_quality(&cinfo, 70, TRUE );
 418         jpeg_start_compress(&cinfo, TRUE);
 419         row_stride = ox * 3;
 420         while (cinfo.next_scanline < cinfo.image_height)
 421         {
 422                 row_pointer[0] = & pic_buffer[cinfo.next_scanline * row_stride];
 423                 (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
 424         }
 425         jpeg_finish_compress(&cinfo);
 426         fclose(outfile);
 427         jpeg_destroy_compress(&cinfo);
 428         return 0;
 429 }
 430
 431 //-------------------------------------------------------------------
 432
 433 inline void m_rend_gif_decodecolormap(unsigned char *cmb, unsigned char *rgbb, ColorMapObject *cm, int s, int l)
 434 {
 435         GifColorType *cmentry;
 436         int i;
 437         for (i = 0; i < l; i++)
 438         {
 439                 cmentry = &cm->Colors[cmb[i]];
 440                 *(rgbb++) = cmentry->Red;
 441                 *(rgbb++) = cmentry->Green;
 442                 *(rgbb++) = cmentry->Blue;
 443         }
 444 }
 445
 446 static unsigned char *gif_load(const char *file, int *ox, int *oy)
 447 {
 448         unsigned char *pic_buffer = NULL;
 449         int px, py, i, j, ibxs;
 450         unsigned char *fbptr;
 451         unsigned char *lb=NULL;
 452         unsigned char *slb=NULL;
 453         GifFileType *gft;
 454         GifRecordType rt;
 455         GifByteType *extension;
 456         ColorMapObject *cmap;
 457         int cmaps;
 458         int extcode;
 459
 460         gft = DGifOpenFileName(file);
 461         if (gft == NULL)
 462                 return NULL;
 463         do
 464         {
 465                 if (DGifGetRecordType(gft, &rt) == GIF_ERROR)
 466                         goto ERROR_R;
 467                 switch(rt)
 468                 {
 469                         case IMAGE_DESC_RECORD_TYPE:
 470                                 if (DGifGetImageDesc(gft) == GIF_ERROR)
 471                                         goto ERROR_R;
 472                                 *ox = px = gft->Image.Width;
 473                                 *oy = py = gft->Image.Height;
 474                                 pic_buffer = new unsigned char[px * py * 3];
 475                                 lb = (unsigned char *)malloc(px * 3);
 476                                 slb = (unsigned char *) malloc(px);
 477
 478                                 if (lb != NULL && slb != NULL)
 479                                 {
 480                                         cmap = (gft->Image.ColorMap ? gft->Image.ColorMap : gft->SColorMap);
 481                                         cmaps = cmap->ColorCount;
 482
 483                                         ibxs = ibxs * 3;
 484                                         fbptr = pic_buffer;
 485                                         if (!(gft->Image.Interlace))
 486                                         {
 487                                                 for (i = 0; i < py; i++, fbptr += px * 3)
 488                                                 {
 489                                                         if (DGifGetLine(gft, slb, px) == GIF_ERROR)
 490                                                                 goto ERROR_R;
 491                                                         m_rend_gif_decodecolormap(slb, lb, cmap, cmaps, px);
 492                                                         memcpy(fbptr, lb, px * 3);
 493                                                 }
 494                                         }
 495                                         else
 496                                         {
 497                                                 for (j = 0; j < 4; j++)
 498                                                 {
 499                                                         fbptr = pic_buffer;
 500                                                         for (i = 0; i < py; i++, fbptr += px * 3)
 501                                                         {
 502                                                                 if (DGifGetLine(gft, slb, px) == GIF_ERROR)
 503                                                                         goto ERROR_R;
 504                                                                 m_rend_gif_decodecolormap(slb, lb, cmap, cmaps, px);
 505                                                                 memcpy(fbptr, lb, px * 3);
 506                                                         }
 507                                                 }
 508                                         }
 509                                 }
 510                                 if (lb)
 511                                 {
 512                                         free(lb);
 513                                         lb=NULL;
 514                                 }
 515                                 if (slb)
 516                                 {
 517                                         free(slb);
 518                                         slb=NULL;
 519                                 }
 520                                 break;
 521                         case EXTENSION_RECORD_TYPE:
 522                                 if (DGifGetExtension(gft, &extcode, &extension) == GIF_ERROR)
 523                                         goto ERROR_R;
 524                                 while (extension != NULL)
 525                                         if (DGifGetExtensionNext(gft, &extension) == GIF_ERROR)
 526                                                 goto ERROR_R;
 527                                 break;
 528                         default:
 529                                 break;
 530                 }
 531         }
 532         while (rt != TERMINATE_RECORD_TYPE);
 533
 534         DGifCloseFile(gft);
 535         return(pic_buffer);
 536 ERROR_R:
 537         eDebug("[Picload] <Error gif>");
 538         if (lb)         free(lb);
 539         if (slb)        free(slb);
 540         DGifCloseFile(gft);
 541         return NULL;
 542 }
 543
 544 //---------------------------------------------------------------------------------------------
 545
 546 ePicLoad::ePicLoad()
 547         :msg_thread(this,1), msg_main(eApp,1)
 548 {
 549         CONNECT(msg_thread.recv_msg, ePicLoad::gotMessage);
 550         CONNECT(msg_main.recv_msg, ePicLoad::gotMessage);
 551
 552         threadrunning = false;
 553         m_filepara = NULL;
 554         m_conf.max_x = 0;
 555         m_conf.max_y = 0;
 556         m_conf.aspect_ratio = 1.066400; //4:3
 557         m_conf.usecache = false;
 558         m_conf.resizetype = 1;
 559         memset(m_conf.background,0x00,sizeof(m_conf.background));
 560         m_conf.thumbnailsize = 180;
 561 }
 562
 563 void ePicLoad::waitFinished()
 564 {
 565         msg_thread.send(Message(Message::quit));
 566         kill();
 567 }
 568
 569 ePicLoad::~ePicLoad()
 570 {
 571         if (threadrunning)
 572                 waitFinished();
 573         if(m_filepara != NULL)
 574                 delete m_filepara;
 575 }
 576
 577 void ePicLoad::thread_finished()
 578 {
 579         threadrunning=false;
 580 }
 581
 582 void ePicLoad::thread()
 583 {
 584         hasStarted();
 585         threadrunning=true;
 586         nice(4);
 587         runLoop();
 588 }
 589
 590 void ePicLoad::decodePic()
 591 {
 592         eDebug("[Picload] decode picture... %s",m_filepara->file);
 593
 594         switch(m_filepara->id)
 595         {
 596                 case F_PNG:     m_filepara->pic_buffer = png_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 597                 case F_JPEG:    m_filepara->pic_buffer = jpeg_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy); break;
 598                 case F_BMP:     m_filepara->pic_buffer = bmp_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 599                 case F_GIF:     m_filepara->pic_buffer = gif_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 600         }
 601
 602         if(m_filepara->pic_buffer != NULL)
 603         {
 604                 resizePic();
 605         }
 606 }
 607
 608 void ePicLoad::decodeThumb()
 609 {
 610         eDebug("[Picload] get Thumbnail... %s",m_filepara->file);
 611
 612         bool exif_thumbnail = false;
 613         bool cachefile_found = false;
 614         std::string cachefile = "";
 615         std::string cachedir = "/.Thumbnails";
 616
 617         if(m_filepara->id == F_JPEG)
 618         {
 619                 Cexif *exif = new Cexif;
 620                 if(exif->DecodeExif(m_filepara->file, 1))
 621                 {
 622                         if(exif->m_exifinfo->IsExif)
 623                         {
 624                                 if(exif->m_exifinfo->Thumnailstate==2)
 625                                 {
 626                                         m_filepara->file = strdup(THUMBNAILTMPFILE);
 627                                         exif_thumbnail = true;
 628                                         eDebug("[Picload] Exif Thumbnail found");
 629                                 }
 630                                 m_filepara->addExifInfo(exif->m_exifinfo->CameraMake);
 631                                 m_filepara->addExifInfo(exif->m_exifinfo->CameraModel);
 632                                 m_filepara->addExifInfo(exif->m_exifinfo->DateTime);
 633                                 char buf[20];
 634                                 snprintf(buf, 20, "%d x %d", exif->m_exifinfo->Width, exif->m_exifinfo->Height);
 635                                 m_filepara->addExifInfo(buf);
 636                         }
 637                         exif->ClearExif();
 638                 }
 639                 delete exif;
 640         }
 641
 642         if((! exif_thumbnail) && m_conf.usecache)
 643         {
 644                 if(FILE *f=fopen(m_filepara->file, "rb"))
 645                 {
 646                         int c;
 647                         int count = 1024*100;
 648                         unsigned long crc32 = 0;
 649                         char crcstr[9];*crcstr=0;
 650
 651                         while ((c=getc(f))!=EOF)
 652                         {
 653                                 crc32 = crc32_table[((crc32) ^ (c)) & 0xFF] ^ ((crc32) >> 8);
 654                                 if(--count < 0) break;
 655                         }
 656
 657                         fclose(f);
 658                         crc32 = ~crc32;
 659                         sprintf(crcstr, "%08lX", crc32);
 660
 661                         cachedir = m_filepara->file;
 662                         unsigned int pos = cachedir.find_last_of("/");
 663                         if (pos != std::string::npos)
 664                                 cachedir = cachedir.substr(0, pos) + "/.Thumbnails";
 665
 666                         cachefile = cachedir + std::string("/pc_") + crcstr;
 667                         if(!access(cachefile.c_str(), R_OK))
 668                         {
 669                                 cachefile_found = true;
 670                                 m_filepara->file = strdup(cachefile.c_str());
 671                                 m_filepara->id = F_JPEG;
 672                                 eDebug("[Picload] Cache File found");
 673                         }
 674                         fclose(f);
 675                 }
 676         }
 677
 678         switch(m_filepara->id)
 679         {
 680                 case F_PNG:     m_filepara->pic_buffer = png_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 681                 case F_JPEG:    m_filepara->pic_buffer = jpeg_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy); break;
 682                 case F_BMP:     m_filepara->pic_buffer = bmp_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 683                 case F_GIF:     m_filepara->pic_buffer = gif_load(m_filepara->file, &m_filepara->ox, &m_filepara->oy);  break;
 684         }
 685
 686         if(exif_thumbnail)
 687                 ::unlink(THUMBNAILTMPFILE);
 688
 689         if(m_filepara->pic_buffer != NULL)
 690         {
 691                 //save cachefile
 692                 if(m_conf.usecache && (! exif_thumbnail) && (! cachefile_found))
 693                 {
 694                         if(access(cachedir.c_str(), R_OK))
 695                                 ::mkdir(cachedir.c_str(), 0755);
 696
 697                         //resize for Thumbnail
 698                         int imx, imy;
 699                         if (m_filepara->ox <= m_filepara->oy)
 700                         {
 701                                 imy = m_conf.thumbnailsize;
 702                                 imx = (int)( (m_conf.thumbnailsize * ((double)m_filepara->ox)) / ((double)m_filepara->oy) );
 703                         }
 704                         else
 705                         {
 706                                 imx = m_conf.thumbnailsize;
 707                                 imy = (int)( (m_conf.thumbnailsize * ((double)m_filepara->oy)) / ((double)m_filepara->ox) );
 708                         }
 709
 710                         m_filepara->pic_buffer = color_resize(m_filepara->pic_buffer, m_filepara->ox, m_filepara->oy, imx, imy);
 711                         m_filepara->ox = imx;
 712                         m_filepara->oy = imy;
 713
 714                         if(jpeg_save(cachefile.c_str(), m_filepara->ox, m_filepara->oy, m_filepara->pic_buffer))
 715                                 eDebug("[Picload] error saving cachefile");
 716                 }
 717
 718                 resizePic();
 719         }
 720 }
 721
 722 void ePicLoad::resizePic()
 723 {
 724         int imx, imy;
 725
 726         if((m_conf.aspect_ratio * m_filepara->oy * m_filepara->max_x / m_filepara->ox) <= m_filepara->max_y)
 727         {
 728                 imx = m_filepara->max_x;
 729                 imy = (int)(m_conf.aspect_ratio * m_filepara->oy * m_filepara->max_x / m_filepara->ox);
 730         }
 731         else
 732         {
 733                 imx = (int)((1.0/m_conf.aspect_ratio) * m_filepara->ox * m_filepara->max_y / m_filepara->oy);
 734                 imy = m_filepara->max_y;
 735         }
 736
 737         if(m_conf.resizetype)
 738                 m_filepara->pic_buffer = color_resize(m_filepara->pic_buffer, m_filepara->ox, m_filepara->oy, imx, imy);
 739         else
 740                 m_filepara->pic_buffer = simple_resize(m_filepara->pic_buffer, m_filepara->ox, m_filepara->oy, imx, imy);
 741
 742         m_filepara->ox = imx;
 743         m_filepara->oy = imy;
 744 }
 745
 746 void ePicLoad::gotMessage(const Message &msg)
 747 {
 748         switch (msg.type)
 749         {
 750                 case Message::decode_Pic:
 751                         decodePic();
 752                         msg_main.send(Message(Message::decode_finished));
 753                         break;
 754                 case Message::decode_Thumb:
 755                         decodeThumb();
 756                         msg_main.send(Message(Message::decode_finished));
 757                         break;
 758                 case Message::quit: // called from decode thread
 759                         eDebug("[Picload] decode thread ... got quit msg");
 760                         quit(0);
 761                         break;
 762                 case Message::decode_finished: // called from main thread
 763                         //eDebug("[Picload] decode finished... %s", m_filepara->file);
 764                         if(m_filepara->callback)
 765                         {
 766                                 PictureData(m_filepara->picinfo.c_str());
 767                         }
 768                         else
 769                         {
 770                                 if(m_filepara != NULL)
 771                                 {
 772                                         delete m_filepara;
 773                                         m_filepara = NULL;
 774                                 }
 775                         }
 776                         break;
 777                 default:
 778                         eDebug("unhandled thread message");
 779         }
 780 }
 781
 782 int ePicLoad::startThread(int what, const char *file, int x, int y, bool async)
 783 {
 784         if(async && threadrunning && m_filepara != NULL)
 785         {
 786                 eDebug("[Picload] thread running");
 787                 m_filepara->callback = false;
 788                 return 1;
 789         }
 790
 791         if(m_filepara != NULL)
 792         {
 793                 delete m_filepara;
 794                 m_filepara = NULL;
 795         }
 796
 797         int file_id = -1;
 798         unsigned char id[10];
 799         int fd = ::open(file, O_RDONLY);
 800         if (fd == -1) return 1;
 801         ::read(fd, id, 10);
 802         ::close(fd);
 803
 804         if(id[1] == 'P' && id[2] == 'N' && id[3] == 'G')                        file_id = F_PNG;
 805         else if(id[6] == 'J' && id[7] == 'F' && id[8] == 'I' && id[9] == 'F')   file_id = F_JPEG;
 806         else if(id[0] == 0xff && id[1] == 0xd8 && id[2] == 0xff)                file_id = F_JPEG;
 807         else if(id[0] == 'B' && id[1] == 'M' )                                  file_id = F_BMP;
 808         else if(id[0] == 'G' && id[1] == 'I' && id[2] == 'F')                   file_id = F_GIF;
 809
 810         if(file_id < 0)
 811         {
 812                 eDebug("[Picload] <format not supportet>");
 813                 return 1;
 814         }
 815
 816         m_filepara = new Cfilepara(file, file_id, getSize(file));
 817         x > 0 ? m_filepara->max_x = x : m_filepara->max_x = m_conf.max_x;
 818         y > 0 ? m_filepara->max_y = y : m_filepara->max_y = m_conf.max_y;
 819
 820         if(m_filepara->max_x <= 0 || m_filepara->max_y <= 0)
 821         {
 822                 delete m_filepara;
 823                 m_filepara = NULL;
 824                 eDebug("[Picload] <error in Para>");
 825                 return 1;
 826         }
 827
 828         if (async) {
 829                 if(what==1)
 830                         msg_thread.send(Message(Message::decode_Pic));
 831                 else
 832                         msg_thread.send(Message(Message::decode_Thumb));
 833                 run();
 834         }
 835         else if (what == 1)
 836                 decodePic();
 837         else
 838                 decodeThumb();
 839         return 0;
 840 }
 841
 842 RESULT ePicLoad::startDecode(const char *file, int x, int y, bool async)
 843 {
 844         return startThread(1, file, x, y, async);
 845 }
 846
 847 RESULT ePicLoad::getThumbnail(const char *file, int x, int y, bool async)
 848 {
 849         return startThread(0, file, x, y, async);
 850 }
 851
 852 PyObject *ePicLoad::getInfo(const char *filename)
 853 {
 854         ePyObject list;
 855
 856         Cexif *exif = new Cexif;
 857         if(exif->DecodeExif(filename))
 858         {
 859                 if(exif->m_exifinfo->IsExif)
 860                 {
 861                         char tmp[256];
 862                         int pos=0;
 863                         list = PyList_New(23);
 864                         PyList_SET_ITEM(list, pos++,  PyString_FromString(filename));
 865                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->Version));
 866                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->CameraMake));
 867                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->CameraModel));
 868                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->DateTime));
 869                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d x %d", exif->m_exifinfo->Width, exif->m_exifinfo->Height));
 870                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->FlashUsed));
 871                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->Orientation));
 872                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->Comments));
 873                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->MeteringMode));
 874                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->ExposureProgram));
 875                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->LightSource));
 876                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", exif->m_exifinfo->CompressionLevel));
 877                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", exif->m_exifinfo->ISOequivalent));
 878                         sprintf(tmp, "%.2f", exif->m_exifinfo->Xresolution);
 879                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 880                         sprintf(tmp, "%.2f", exif->m_exifinfo->Yresolution);
 881                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 882                         PyList_SET_ITEM(list, pos++,  PyString_FromString(exif->m_exifinfo->ResolutionUnit));
 883                         sprintf(tmp, "%.2f", exif->m_exifinfo->Brightness);
 884                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 885                         sprintf(tmp, "%.5f sec.", exif->m_exifinfo->ExposureTime);
 886                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 887                         sprintf(tmp, "%.5f", exif->m_exifinfo->ExposureBias);
 888                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 889                         sprintf(tmp, "%.5f", exif->m_exifinfo->Distance);
 890                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 891                         sprintf(tmp, "%.5f", exif->m_exifinfo->CCDWidth);
 892                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 893                         sprintf(tmp, "%.2f", exif->m_exifinfo->ApertureFNumber);
 894                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 895                 }
 896                 else
 897                 {
 898                         list = PyList_New(2);
 899                         PyList_SET_ITEM(list, 0, PyString_FromString(filename));
 900                         PyList_SET_ITEM(list, 1, PyString_FromString(exif->m_szLastError));
 901                 }
 902                 exif->ClearExif();
 903         }
 904         else
 905         {
 906                 list = PyList_New(2);
 907                 PyList_SET_ITEM(list, 0, PyString_FromString(filename));
 908                 PyList_SET_ITEM(list, 1, PyString_FromString(exif->m_szLastError));
 909         }
 910         delete exif;
 911
 912         return list ? (PyObject*)list : (PyObject*)PyList_New(0);
 913 }
 914
 915 int ePicLoad::getData(ePtr<gPixmap> &result)
 916 {
 917         result = 0;
 918         if(m_filepara->pic_buffer == NULL) return 0;
 919
 920         m_filepara->pic_buffer = conv24to32(m_filepara->pic_buffer, m_filepara->ox * m_filepara->oy);
 921
 922         result=new gPixmap(eSize(m_filepara->max_x, m_filepara->max_y), 32);
 923         gSurface *surface = result->surface;
 924         int a=0, b=0;
 925         int nc=0, oc=0;
 926         int o_y=0, u_y=0, v_x=0, h_x=0;
 927
 928         unsigned char *tmp_buffer=((unsigned char *)(surface->data));
 929
 930         if(m_filepara->oy < m_filepara->max_y)
 931         {
 932                 o_y = (m_filepara->max_y - m_filepara->oy) / 2;
 933                 u_y = m_filepara->max_y - m_filepara->oy - o_y;
 934         }
 935         if(m_filepara->ox < m_filepara->max_x)
 936         {
 937                 v_x = (m_filepara->max_x - m_filepara->ox) / 2;
 938                 h_x = m_filepara->max_x - m_filepara->ox - v_x;
 939         }
 940
 941         if(m_filepara->oy < m_filepara->max_y)
 942         {
 943                 for(a=0; a<(o_y*m_filepara->ox); a++, nc+=4)
 944                 {
 945                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 946                         memcpy(tmp_buffer, m_conf.background, sizeof(m_conf.background));
 947                 }
 948         }
 949
 950         for(a=0; a<m_filepara->oy; a++)
 951         {
 952                 if(m_filepara->ox < m_filepara->max_x)
 953                 {
 954                         for(b=0; b<v_x; b++, nc+=4)
 955                         {
 956                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 957                                 memcpy(tmp_buffer, m_conf.background, sizeof(m_conf.background));
 958                         }
 959                 }
 960
 961                 for(b=0; b<(m_filepara->ox*4); b+=4, nc+=4)
 962                 {
 963                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 964                         tmp_buffer[2] = m_filepara->pic_buffer[oc++];
 965                         tmp_buffer[1] = m_filepara->pic_buffer[oc++];
 966                         tmp_buffer[0] = m_filepara->pic_buffer[oc++];
 967                         tmp_buffer[3] = m_filepara->pic_buffer[oc++];
 968                 }
 969
 970                 if(m_filepara->ox < m_filepara->max_x)
 971                 {
 972                         for(b=0; b<h_x; b++, nc+=4)
 973                         {
 974                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 975                                 memcpy(tmp_buffer, m_conf.background, sizeof(m_conf.background));
 976                         }
 977                 }
 978         }
 979
 980         if(m_filepara->oy < m_filepara->max_y)
 981         {
 982                 for(a=0; a<(u_y*m_filepara->ox); a++, nc+=4)
 983                 {
 984                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 985                         memcpy(tmp_buffer, m_conf.background, sizeof(m_conf.background));
 986                 }
 987         }
 988
 989         surface->clut.data=0;
 990         surface->clut.colors=0;
 991         surface->clut.start=0;
 992
 993         delete m_filepara;
 994         m_filepara = NULL;
 995
 996         return 0;
 997 }
 998
 999 RESULT ePicLoad::setPara(PyObject *val)
1000 {
1001         if (!PySequence_Check(val))
1002                 return 0;
1003         if (PySequence_Size(val) < 7)
1004                 return 0;
1005         else {
1006                 ePyObject fast = PySequence_Fast(val, "");
1007                 m_conf.max_x            = PyInt_AsLong( PySequence_Fast_GET_ITEM(fast, 0));
1008                 m_conf.max_y            = PyInt_AsLong( PySequence_Fast_GET_ITEM(fast, 1));
1009                 m_conf.aspect_ratio     = (double)PyInt_AsLong( PySequence_Fast_GET_ITEM(fast, 2)) / PyInt_AsLong(PySequence_Fast_GET_ITEM(fast, 3));
1010                 m_conf.usecache         = PyInt_AsLong( PySequence_Fast_GET_ITEM(fast, 4));
1011                 m_conf.resizetype       = PyInt_AsLong( PySequence_Fast_GET_ITEM(fast, 5));
1012                 const char *bg_str      = PyString_AsString( PySequence_Fast_GET_ITEM(fast, 6));
1013
1014                 if(bg_str[0] == '#' && strlen(bg_str)==9)
1015                 {
1016                         int bg = strtoul(bg_str+1, NULL, 16);
1017                         m_conf.background[0] = bg&0xFF;         //BB
1018                         m_conf.background[1] = (bg>>8)&0xFF;    //GG
1019                         m_conf.background[2] = (bg>>16)&0xFF;   //RR
1020                         m_conf.background[3] = bg>>24;          //AA
1021                 }
1022                 eDebug("[Picload] setPara max-X=%d max-Y=%d aspect_ratio=%lf cache=%d resize=%d bg=#%02X%02X%02X%02X", m_conf.max_x, m_conf.max_y, m_conf.aspect_ratio, (int)m_conf.usecache, (int)m_conf.resizetype, m_conf.background[3], m_conf.background[2], m_conf.background[1], m_conf.background[0]);
1023         }
1024         return 1;
1025 }
1026
1027 //------------------------------------------------------------------------------------
1028
1029 //for old plugins
1030 SWIG_VOID(int) loadPic(ePtr<gPixmap> &result, std::string filename, int x, int y, int aspect, int resize_mode, int rotate, int background, std::string cachefile)
1031 {
1032         long asp1, asp2;
1033         result = 0;
1034         eDebug("deprecated loadPic function used!!! please use the non blocking version! you can see demo code in Pictureplayer plugin... this function is removed in the near future!");
1035         ePicLoad mPL;
1036
1037         switch(aspect)
1038         {
1039                 case 1:         asp1 = 16*576, asp2 = 9*720; break; //16:9
1040                 case 2:         asp1 = 16*576, asp2 = 10*720; break; //16:10
1041                 case 3:         asp1 = 5*576, asp2 = 4*720; break; //5:4
1042                 default:        asp1 = 4*576, asp2 = 3*720; break; //4:3
1043         }
1044
1045         ePyObject tuple = PyTuple_New(7);
1046         PyTuple_SET_ITEM(tuple, 0,  PyLong_FromLong(x));
1047         PyTuple_SET_ITEM(tuple, 1,  PyLong_FromLong(y));
1048         PyTuple_SET_ITEM(tuple, 2,  PyLong_FromLong(asp1));
1049         PyTuple_SET_ITEM(tuple, 3,  PyLong_FromLong(asp2));
1050         PyTuple_SET_ITEM(tuple, 4,  PyLong_FromLong(0));
1051         PyTuple_SET_ITEM(tuple, 5,  PyLong_FromLong(resize_mode));
1052         if(background)
1053                 PyTuple_SET_ITEM(tuple, 6,  PyString_FromString("#ff000000"));
1054         else
1055                 PyTuple_SET_ITEM(tuple, 6,  PyString_FromString("#00000000"));
1056
1057         mPL.setPara(tuple);
1058
1059         if(!mPL.startDecode(filename.c_str(), 0, 0, false))
1060                 mPL.getData(result);
1061
1062         return 0;
1063 }