code.vuplus.com Git - vuplus_dvbapp/blob - lib/gdi/picload.cpp

   1 #include "picload.h"
   2 #include "picexif.h"
   3
   4 #include <png.h>
   5
   6 #include <fcntl.h>
   7 #include <unistd.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10
  11 extern "C" {
  12 #include <jpeglib.h>
  13 //#include "transupp.h"
  14 }
  15 #include <setjmp.h>
  16
  17 unsigned char *pic_buffer=NULL;
  18
  19 static unsigned char *simple_resize(unsigned char * orgin, int ox, int oy, int dx, int dy)
  20 {
  21         unsigned char *cr, *p, *l;
  22         int i, j, k, ip;
  23         cr = new unsigned char[dx * dy * 3];
  24         if (cr == NULL)
  25         {
  26                 printf("[RESIZE] Error: malloc\n");
  27                 return(orgin);
  28         }
  29         l = cr;
  30
  31         for (j = 0; j < dy; j++,l += dx * 3)
  32         {
  33                 p = orgin + (j * oy / dy * ox * 3);
  34                 for (i = 0, k = 0; i < dx; i++, k += 3)
  35                 {
  36                         ip = i * ox / dx * 3;
  37                         l[k] = p[ip];
  38                         l[k+1] = p[ip + 1];
  39                         l[k+2] = p[ip + 2];
  40                 }
  41         }
  42         delete [] orgin;
  43         return(cr);
  44 }
  45
  46 static unsigned char *color_resize(unsigned char * orgin, int ox, int oy, int dx, int dy)
  47 {
  48         unsigned char *cr, *p, *q;
  49         int i, j, k, l, xa, xb, ya, yb;
  50         int sq, r, g, b;
  51         cr = new unsigned char[dx * dy * 3];
  52         if (cr == NULL)
  53         {
  54                 printf("[RESIZE] Error: malloc\n");
  55                 return(orgin);
  56         }
  57         p = cr;
  58
  59         for (j = 0; j < dy; j++)
  60         {
  61                 for (i = 0; i < dx; i++, p += 3)
  62                 {
  63                         xa = i * ox / dx;
  64                         ya = j * oy / dy;
  65                         xb = (i + 1) * ox / dx;
  66                         if (xb >= ox)
  67                                 xb = ox - 1;
  68                         yb = (j + 1) * oy / dy;
  69                         if (yb >= oy)
  70                                 yb = oy - 1;
  71                         for (l = ya, r = 0, g = 0, b = 0, sq = 0; l <= yb; l++)
  72                         {
  73                                 q = orgin + ((l * ox + xa) * 3);
  74                                 for (k = xa; k <= xb; k++, q += 3, sq++)
  75                                 {
  76                                         r += q[0]; g += q[1]; b += q[2];
  77                                 }
  78                         }
  79                         p[0] = r / sq; p[1] = g / sq; p[2] = b / sq;
  80                 }
  81         }
  82         delete [] orgin;
  83         return(cr);
  84 }
  85
  86 //-------------------------------------------------------------------
  87
  88 struct r_jpeg_error_mgr
  89 {
  90         struct jpeg_error_mgr pub;
  91         jmp_buf envbuffer;
  92 };
  93
  94 void jpeg_cb_error_exit(j_common_ptr cinfo)
  95 {
  96         struct r_jpeg_error_mgr *mptr;
  97         mptr = (struct r_jpeg_error_mgr *) cinfo->err;
  98         (*cinfo->err->output_message) (cinfo);
  99         longjmp(mptr->envbuffer, 1);
 100 }
 101
 102 static int jpeg_save(unsigned char *image_buffer, const char * filename, int quality, int image_height, int image_width)
 103 {
 104         struct jpeg_compress_struct cinfo;
 105         struct jpeg_error_mgr jerr;
 106         FILE * outfile;         /* target file */
 107         JSAMPROW row_pointer[1];/* pointer to JSAMPLE row[s] */
 108         int row_stride;         /* physical row width in image buffer */
 109
 110         cinfo.err = jpeg_std_error(&jerr);
 111         jpeg_create_compress(&cinfo);
 112
 113         if ((outfile = fopen(filename, "wb")) == NULL)
 114         {
 115                 eDebug("[JPEG] can't open %s", filename);
 116                 return -1;
 117         }
 118         jpeg_stdio_dest(&cinfo, outfile);
 119
 120         cinfo.image_width = image_width;
 121         cinfo.image_height = image_height;
 122         cinfo.input_components = 3;
 123         cinfo.in_color_space = JCS_RGB;
 124         jpeg_set_defaults(&cinfo);
 125         jpeg_set_quality(&cinfo, quality, TRUE );
 126         jpeg_start_compress(&cinfo, TRUE);
 127         row_stride = image_width * 3;
 128         while (cinfo.next_scanline < cinfo.image_height)
 129         {
 130                 row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
 131                 (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
 132         }
 133         jpeg_finish_compress(&cinfo);
 134         fclose(outfile);
 135         jpeg_destroy_compress(&cinfo);
 136         return 0;
 137 }
 138
 139
 140 static int jpeg_load(const char *filename, int *x, int *y)
 141 {
 142         struct jpeg_decompress_struct cinfo;
 143         struct jpeg_decompress_struct *ciptr = &cinfo;
 144         struct r_jpeg_error_mgr emgr;
 145         FILE *fh;
 146
 147         if (!(fh = fopen(filename, "rb")))
 148                 return 0;
 149
 150         ciptr->err = jpeg_std_error(&emgr.pub);
 151         emgr.pub.error_exit = jpeg_cb_error_exit;
 152         if (setjmp(emgr.envbuffer) == 1)
 153         {
 154                 jpeg_destroy_decompress(ciptr);
 155                 fclose(fh);
 156                 return 0;
 157         }
 158
 159         jpeg_create_decompress(ciptr);
 160         jpeg_stdio_src(ciptr, fh);
 161         jpeg_read_header(ciptr, TRUE);
 162         ciptr->out_color_space = JCS_RGB;
 163         ciptr->scale_denom = 1;
 164
 165         jpeg_start_decompress(ciptr);
 166
 167         *x=ciptr->output_width;
 168         *y=ciptr->output_height;
 169
 170         if(ciptr->output_components == 3)
 171         {
 172                 JSAMPLE *lb = (JSAMPLE *)(*ciptr->mem->alloc_small)((j_common_ptr) ciptr, JPOOL_PERMANENT, ciptr->output_width * ciptr->output_components);
 173                 pic_buffer = new unsigned char[ciptr->output_height * ciptr->output_width * ciptr->output_components];
 174                 unsigned char *bp = pic_buffer;
 175
 176                 while (ciptr->output_scanline < ciptr->output_height)
 177                 {
 178                         jpeg_read_scanlines(ciptr, &lb, 1);
 179                         memcpy(bp, lb, ciptr->output_width * ciptr->output_components);
 180                         bp += ciptr->output_width * ciptr->output_components;
 181                 }
 182         }
 183         jpeg_finish_decompress(ciptr);
 184         jpeg_destroy_decompress(ciptr);
 185         fclose(fh);
 186         return 1;
 187 }
 188
 189 //---------------------------------------------------------------------------------------------
 190
 191 #define BMP_TORASTER_OFFSET 10
 192 #define BMP_SIZE_OFFSET 18
 193 #define BMP_BPP_OFFSET 28
 194 #define BMP_RLE_OFFSET 30
 195 #define BMP_COLOR_OFFSET 54
 196
 197 #define fill4B(a) ((4 - ((a) % 4 )) & 0x03)
 198
 199 static int bmp_load(const char *filename,  int *x, int *y)
 200 {
 201         unsigned char buff[4];
 202
 203         int fd = open(filename, O_RDONLY);
 204         if (fd == -1) return 0;
 205         if (lseek(fd, BMP_SIZE_OFFSET, SEEK_SET) == -1) return 0;
 206         read(fd, buff, 4);
 207         *x = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 208         read(fd, buff, 4);
 209         *y = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 210         if (lseek(fd, BMP_TORASTER_OFFSET, SEEK_SET) == -1) return 0;
 211         read(fd, buff, 4);
 212         int raster = buff[0] + (buff[1] << 8) + (buff[2] << 16) + (buff[3] << 24);
 213         if (lseek(fd, BMP_BPP_OFFSET, SEEK_SET) == -1) return 0;
 214         read(fd, buff, 2);
 215         int bpp = buff[0] + (buff[1] << 8);
 216
 217         //printf("x=%d, y=%d,bpp=%d\n",*x, *y, bpp);
 218         pic_buffer = new unsigned char[(*x) * (*y) * 3];
 219         unsigned char *wr_buffer = pic_buffer + (*x) * ((*y) - 1) * 3;
 220
 221         switch (bpp)
 222         {
 223                 case 24:
 224                 {
 225                         int skip = fill4B((*x) * 3);
 226                         lseek(fd, raster, SEEK_SET);
 227                         unsigned char c;
 228                         for (int i = 0; i < (*y); i++)
 229                         {
 230                                 read(fd, wr_buffer, (*x) * 3);
 231                                 for (int j = 0; j < (*x) * 3 ; j = j + 3)
 232                                 {
 233                                         c = wr_buffer[j];
 234                                         wr_buffer[j] = wr_buffer[j + 2];
 235                                         wr_buffer[j + 2] = c;
 236                                 }
 237                                 if (skip)
 238                                         read(fd, buff, skip);
 239                                 wr_buffer -= (*x) * 3;
 240                         }
 241                         break;
 242                 }
 243                 default:
 244                         return 0;
 245         }
 246
 247         close(fd);
 248         return 1;
 249 }
 250
 251 //---------------------------------------------------------------------------------------------
 252
 253 static int png_load(const char *filename,  int *x, int *y)
 254 {
 255         static const png_color_16 my_background = {0, 0, 0, 0, 0};
 256
 257         png_structp png_ptr;
 258         png_infop info_ptr;
 259         png_uint_32 width, height;
 260         unsigned int i;
 261         int bit_depth, color_type, interlace_type;
 262         int number_passes, pass;
 263         png_byte * fbptr;
 264         FILE * fh;
 265
 266         if (!(fh = fopen(filename, "rb"))) return 0;
 267
 268         png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 269         if (png_ptr == NULL)
 270                 return 0;
 271         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 0;
 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 0;
 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)
 292         {
 293                 png_set_palette_to_rgb(png_ptr);
 294                 png_set_background(png_ptr, (png_color_16 *)&my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 295         }
 296
 297         if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
 298         {
 299                 png_set_gray_to_rgb(png_ptr);
 300                 png_set_background(png_ptr, (png_color_16 *)&my_background, PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 301         }
 302
 303         if (color_type & PNG_COLOR_MASK_ALPHA)
 304                 png_set_strip_alpha(png_ptr);
 305
 306         if (bit_depth < 8)      png_set_packing(png_ptr);
 307         if (bit_depth == 16)    png_set_strip_16(png_ptr);
 308
 309         number_passes = png_set_interlace_handling(png_ptr);
 310         png_read_update_info(png_ptr, info_ptr);
 311
 312         if (width * 3 != png_get_rowbytes(png_ptr, info_ptr))
 313         {
 314                 eDebug("[PNG] Error processing");
 315                 return 0;
 316         }
 317
 318         pic_buffer = new unsigned char[width * height * 3];
 319         *x=width;
 320         *y=height;
 321
 322         for(pass = 0; pass < number_passes; pass++)
 323         {
 324                 fbptr = (png_byte *)pic_buffer;
 325                 for (i = 0; i < height; i++, fbptr += width * 3)
 326                         png_read_row(png_ptr, fbptr, NULL);
 327         }
 328         png_read_end(png_ptr, info_ptr);
 329         png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
 330         fclose(fh);
 331         return 1;
 332 }
 333
 334 //---------------------------------------------------------------------------------------------
 335
 336 PyObject *getExif(const char *filename)
 337 {
 338         PyObject *list = 0;
 339         Cexif *m_exif = new Cexif();
 340         if(m_exif->DecodeExif(filename))
 341         {
 342                 if(m_exif->m_exifinfo->IsExif)
 343                 {
 344                         int pos=0;
 345                         char tmp[256];
 346                         list = PyList_New(22);
 347                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->Version));
 348                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->CameraMake));
 349                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->CameraModel));
 350                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->DateTime));
 351                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->Comments));
 352                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d x %d", m_exif->m_exifinfo->Width, m_exif->m_exifinfo->Height));
 353                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->Orientation));
 354                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->MeteringMode));
 355                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->ExposureProgram));
 356                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->LightSource));
 357                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->FlashUsed));
 358                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", m_exif->m_exifinfo->CompressionLevel));
 359                         PyList_SET_ITEM(list, pos++,  PyString_FromFormat("%d", m_exif->m_exifinfo->ISOequivalent));
 360                         sprintf(tmp, "%.2f", m_exif->m_exifinfo->Xresolution);
 361                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 362                         sprintf(tmp, "%.2f", m_exif->m_exifinfo->Yresolution);
 363                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 364                         PyList_SET_ITEM(list, pos++,  PyString_FromString(m_exif->m_exifinfo->ResolutionUnit));
 365                         sprintf(tmp, "%.2f", m_exif->m_exifinfo->Brightness);
 366                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 367                         sprintf(tmp, "%.5f sec.", m_exif->m_exifinfo->ExposureTime);
 368                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 369                         sprintf(tmp, "%.5f", m_exif->m_exifinfo->ExposureBias);
 370                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 371                         sprintf(tmp, "%.5f", m_exif->m_exifinfo->Distance);
 372                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 373                         sprintf(tmp, "%.5f", m_exif->m_exifinfo->CCDWidth);
 374                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 375                         sprintf(tmp, "%.2f", m_exif->m_exifinfo->ApertureFNumber);
 376                         PyList_SET_ITEM(list, pos++,  PyString_FromString(tmp));
 377                 }
 378                 else
 379                 {
 380                         list = PyList_New(1);
 381                         PyList_SET_ITEM(list, 0, PyString_FromString(m_exif->m_szLastError));
 382                 }
 383                 m_exif->ClearExif();
 384         }
 385         else
 386         {
 387                 list = PyList_New(1);
 388                 PyList_SET_ITEM(list, 0, PyString_FromString(m_exif->m_szLastError));
 389         }
 390
 391         delete m_exif;
 392
 393         return list ? list : PyList_New(0);
 394 }
 395
 396 //---------------------------------------------------------------------------------------------
 397
 398 int loadPic(ePtr<gPixmap> &result, std::string filename, int w, int h, int aspect, int resize_mode, int rotate, int background, std::string cachefile)
 399 {
 400         result = 0;
 401         int ox=0, oy=0, imx, imy;
 402         pic_buffer=NULL;
 403         bool cache=false;
 404
 405         if(cachefile.length())
 406         {
 407                 cache = true;
 408                 if(jpeg_load(cachefile.c_str(), &ox, &oy))
 409                         eDebug("[CACHEPIC] x-size=%d, y-size=%d", ox, oy);
 410         }
 411
 412         if(pic_buffer==NULL)
 413         {
 414                 unsigned int pos = filename.find_last_of(".");
 415                 if (pos == std::string::npos)
 416                         pos = filename.length() - 1;
 417                 std::string ext = filename.substr(pos);
 418                 std::transform(ext.begin(), ext.end(), ext.begin(), (int(*)(int)) toupper);
 419                 if(ext == ".JPEG" || ext == ".JPG")
 420                         jpeg_load(filename.c_str(), &ox, &oy);
 421                 else if(ext == ".BMP")
 422                         bmp_load(filename.c_str(), &ox, &oy);
 423                 else if(ext == ".PNG")
 424                         png_load(filename.c_str(), &ox, &oy);
 425                 else
 426                 {
 427                         eDebug("[PIC] <format not supportet>");
 428                         return 0;
 429                 }
 430
 431                 eDebug("[FULLPIC] x-size=%d, y-size=%d", ox, oy);
 432
 433                 if(pic_buffer==NULL)
 434                         return 0;
 435
 436                 double aspect_ratio;
 437                 switch(aspect)
 438                 {
 439                         case 1:         aspect_ratio = 1.777 / ((double)720/576); break; //16:9
 440                         case 2:         aspect_ratio = 1.600 / ((double)720/576); break; //16:10
 441                         //case 3:       aspect_ratio = 1.250 / ((double)720/576); break; //5:4
 442                         default:        aspect_ratio = 1.333 / ((double)720/576); //4:3
 443                 }
 444
 445                 if((aspect_ratio * oy * w / ox) <= h)
 446                 {
 447                         imx = w;
 448                         imy = (int)(aspect_ratio*oy*w/ox);
 449                 }
 450                 else
 451                 {
 452                         imx = (int)((1.0/aspect_ratio)*ox*h/oy);
 453                         imy = h;
 454                 }
 455
 456                 if(resize_mode) pic_buffer = color_resize(pic_buffer, ox, oy, imx, imy);
 457                 else            pic_buffer = simple_resize(pic_buffer, ox, oy, imx, imy);
 458
 459                 ox = imx;
 460                 oy = imy;
 461
 462                 if(cache)
 463                 {
 464                         jpeg_save(pic_buffer, cachefile.c_str(), 50, oy, ox);
 465                         eDebug("[SAVEPIC] x-size=%d, y-size=%d", ox, oy);
 466                 }
 467
 468         }
 469
 470
 471         result=new gPixmap(eSize(w, h), 32);
 472         gSurface *surface = result->surface;
 473         int a=0, b=0;
 474         int nc=0, oc=0;
 475         int o_y=0, u_y=0, v_x=0, h_x=0;
 476         unsigned char clear[4] = {0x00,0x00,0x00,0x00};
 477         if(background)  clear[3]=0xFF;
 478         unsigned char *tmp_buffer = new unsigned char[4];
 479
 480         if(oy < h)
 481         {
 482                 o_y=(h-oy)/2;
 483                 u_y=h-oy-o_y;
 484         }
 485         if(ox < w)
 486         {
 487                 v_x=(w-ox)/2;
 488                 h_x=w-ox-v_x;
 489         }
 490
 491         //eDebug("o_y=%d u_y=%d v_x=%d h_x=%d", o_y, u_y, v_x, h_x);
 492
 493         if(oy < h)
 494                 for(a=0; a<(o_y*ox)+1; a++, nc+=4)
 495                 {
 496                         memcpy(tmp_buffer, clear, sizeof(clear));
 497                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 498                 }
 499
 500         for(a=0; a<oy; a++)
 501         {
 502                 if(ox < w)
 503                         for(b=0; b<v_x; b++, nc+=4)
 504                         {
 505                                 memcpy(tmp_buffer, clear, sizeof(clear));
 506                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 507                         }
 508
 509                 for(b=0; b<(ox*3); b+=3, nc+=4)
 510                 {
 511                         tmp_buffer[3]=0xFF;
 512                         tmp_buffer[2]=pic_buffer[oc++];
 513                         tmp_buffer[1]=pic_buffer[oc++];
 514                         tmp_buffer[0]=pic_buffer[oc++];
 515
 516                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 517                 }
 518
 519                 if(ox < w)
 520                         for(b=0; b<h_x; b++, nc+=4)
 521                         {
 522                                 memcpy(tmp_buffer, clear, sizeof(clear));
 523                                 tmp_buffer=((unsigned char *)(surface->data)) + nc;
 524                         }
 525         }
 526
 527         if(oy < h)
 528                 for(a=0; a<(u_y*ox)+1; a++, nc+=4)
 529                 {
 530                         memcpy(tmp_buffer, clear, sizeof(clear));
 531                         tmp_buffer=((unsigned char *)(surface->data)) + nc;
 532                 }
 533
 534         //eDebug("[PIC] buffer=%d, nc=%d oc=%d ox=%d, oy=%d",w*h*4, nc, oc, ox, oy);
 535
 536         surface->clut.data=0;
 537         surface->clut.colors=0;
 538         surface->clut.start=0;
 539
 540         delete [] pic_buffer;
 541
 542         return 0;
 543 }