The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1 | //-------------------------------------------------------------------------- |
| 2 | // Program to pull the information out of various types of EXIF digital |
| 3 | // camera files and show it in a reasonably consistent way |
| 4 | // |
| 5 | // This module handles basic Jpeg file handling |
| 6 | // |
| 7 | // Matthias Wandel |
| 8 | //-------------------------------------------------------------------------- |
Ray Chen | 5d50b9a | 2010-06-23 15:14:30 -0700 | [diff] [blame] | 9 | //#define LOG_NDEBUG 0 |
| 10 | #define LOG_TAG "JHEAD" |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 11 | #include <utils/Log.h> |
| 12 | #include "jhead.h" |
| 13 | |
| 14 | // Storage for simplified info extracted from file. |
| 15 | ImageInfo_t ImageInfo; |
| 16 | |
| 17 | |
| 18 | static Section_t * Sections = NULL; |
| 19 | static int SectionsAllocated; |
| 20 | static int SectionsRead; |
| 21 | static int HaveAll; |
| 22 | |
| 23 | // Define the line below to turn on poor man's debugging output |
| 24 | #undef SUPERDEBUG |
| 25 | |
| 26 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 27 | #define printf ALOGE |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 28 | #endif |
| 29 | |
| 30 | |
| 31 | |
| 32 | #define PSEUDO_IMAGE_MARKER 0x123; // Extra value. |
| 33 | //-------------------------------------------------------------------------- |
| 34 | // Get 16 bits motorola order (always) for jpeg header stuff. |
| 35 | //-------------------------------------------------------------------------- |
| 36 | static int Get16m(const void * Short) |
| 37 | { |
| 38 | return (((uchar *)Short)[0] << 8) | ((uchar *)Short)[1]; |
| 39 | } |
| 40 | |
| 41 | |
| 42 | //-------------------------------------------------------------------------- |
| 43 | // Process a COM marker. |
| 44 | // We want to print out the marker contents as legible text; |
| 45 | // we must guard against random junk and varying newline representations. |
| 46 | //-------------------------------------------------------------------------- |
| 47 | static void process_COM (const uchar * Data, int length) |
| 48 | { |
| 49 | int ch; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 50 | char Comment[MAX_COMMENT_SIZE+1]; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 51 | int nch; |
| 52 | int a; |
| 53 | |
| 54 | nch = 0; |
| 55 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 56 | if (length > MAX_COMMENT_SIZE) length = MAX_COMMENT_SIZE; // Truncate if it won't fit in our structure. |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 57 | |
| 58 | for (a=2;a<length;a++){ |
| 59 | ch = Data[a]; |
| 60 | |
| 61 | if (ch == '\r' && Data[a+1] == '\n') continue; // Remove cr followed by lf. |
| 62 | |
| 63 | if (ch >= 32 || ch == '\n' || ch == '\t'){ |
| 64 | Comment[nch++] = (char)ch; |
| 65 | }else{ |
| 66 | Comment[nch++] = '?'; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | Comment[nch] = '\0'; // Null terminate |
| 71 | |
| 72 | if (ShowTags){ |
| 73 | printf("COM marker comment: %s\n",Comment); |
| 74 | } |
| 75 | |
| 76 | strcpy(ImageInfo.Comments,Comment); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 77 | ImageInfo.CommentWidchars = 0; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | |
| 81 | //-------------------------------------------------------------------------- |
| 82 | // Process a SOFn marker. This is useful for the image dimensions |
| 83 | //-------------------------------------------------------------------------- |
| 84 | static void process_SOFn (const uchar * Data, int marker) |
| 85 | { |
| 86 | int data_precision, num_components; |
| 87 | |
| 88 | data_precision = Data[2]; |
| 89 | ImageInfo.Height = Get16m(Data+3); |
| 90 | ImageInfo.Width = Get16m(Data+5); |
| 91 | num_components = Data[7]; |
| 92 | |
| 93 | if (num_components == 3){ |
| 94 | ImageInfo.IsColor = 1; |
| 95 | }else{ |
| 96 | ImageInfo.IsColor = 0; |
| 97 | } |
| 98 | |
| 99 | ImageInfo.Process = marker; |
| 100 | |
| 101 | if (ShowTags){ |
| 102 | printf("JPEG image is %uw * %uh, %d color components, %d bits per sample\n", |
| 103 | ImageInfo.Width, ImageInfo.Height, num_components, data_precision); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | |
| 108 | //-------------------------------------------------------------------------- |
| 109 | // Check sections array to see if it needs to be increased in size. |
| 110 | //-------------------------------------------------------------------------- |
| 111 | void CheckSectionsAllocated(void) |
| 112 | { |
| 113 | if (SectionsRead > SectionsAllocated){ |
| 114 | ErrFatal("allocation screwup"); |
| 115 | } |
| 116 | if (SectionsRead >= SectionsAllocated){ |
| 117 | SectionsAllocated += SectionsAllocated/2; |
| 118 | Sections = (Section_t *)realloc(Sections, sizeof(Section_t)*SectionsAllocated); |
| 119 | if (Sections == NULL){ |
| 120 | ErrFatal("could not allocate data for entire image"); |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | |
| 126 | //-------------------------------------------------------------------------- |
| 127 | // Parse the marker stream until SOS or EOI is seen; |
| 128 | //-------------------------------------------------------------------------- |
| 129 | int ReadJpegSections (FILE * infile, ReadMode_t ReadMode) |
| 130 | { |
| 131 | int a; |
| 132 | int HaveCom = FALSE; |
| 133 | |
| 134 | a = fgetc(infile); |
| 135 | |
| 136 | if (a != 0xff || fgetc(infile) != M_SOI){ |
| 137 | return FALSE; |
| 138 | } |
| 139 | for(;;){ |
| 140 | int itemlen; |
| 141 | int marker = 0; |
| 142 | int ll,lh, got; |
| 143 | uchar * Data; |
| 144 | |
| 145 | CheckSectionsAllocated(); |
| 146 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 147 | for (a=0;a<=16;a++){ |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 148 | marker = fgetc(infile); |
| 149 | if (marker != 0xff) break; |
| 150 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 151 | if (a >= 16){ |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 152 | fprintf(stderr,"too many padding bytes\n"); |
| 153 | return FALSE; |
| 154 | } |
| 155 | } |
| 156 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 157 | |
| 158 | Sections[SectionsRead].Type = marker; |
Jeff Sharkey | 31b17e6 | 2013-08-21 11:27:36 -0700 | [diff] [blame] | 159 | Sections[SectionsRead].Offset = ftell(infile); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 160 | |
| 161 | // Read the length of the section. |
| 162 | lh = fgetc(infile); |
| 163 | ll = fgetc(infile); |
| 164 | |
| 165 | itemlen = (lh << 8) | ll; |
| 166 | |
| 167 | if (itemlen < 2){ |
| 168 | // ErrFatal("invalid marker"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 169 | ALOGE("invalid marker"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 170 | return FALSE; |
| 171 | } |
| 172 | |
| 173 | Sections[SectionsRead].Size = itemlen; |
| 174 | |
| 175 | Data = (uchar *)malloc(itemlen); |
| 176 | if (Data == NULL){ |
| 177 | // ErrFatal("Could not allocate memory"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 178 | ALOGE("Could not allocate memory"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 179 | return 0; |
| 180 | } |
| 181 | Sections[SectionsRead].Data = Data; |
| 182 | |
| 183 | // Store first two pre-read bytes. |
| 184 | Data[0] = (uchar)lh; |
| 185 | Data[1] = (uchar)ll; |
| 186 | |
| 187 | got = fread(Data+2, 1, itemlen-2, infile); // Read the whole section. |
| 188 | if (got != itemlen-2){ |
| 189 | // ErrFatal("Premature end of file?"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 190 | ALOGE("Premature end of file?"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 191 | return FALSE; |
| 192 | } |
| 193 | SectionsRead += 1; |
| 194 | |
| 195 | printf("reading marker %d", marker); |
| 196 | switch(marker){ |
| 197 | |
| 198 | case M_SOS: // stop before hitting compressed data |
| 199 | // If reading entire image is requested, read the rest of the data. |
| 200 | if (ReadMode & READ_IMAGE){ |
| 201 | int cp, ep, size; |
| 202 | // Determine how much file is left. |
| 203 | cp = ftell(infile); |
| 204 | fseek(infile, 0, SEEK_END); |
| 205 | ep = ftell(infile); |
| 206 | fseek(infile, cp, SEEK_SET); |
| 207 | |
| 208 | size = ep-cp; |
| 209 | Data = (uchar *)malloc(size); |
| 210 | if (Data == NULL){ |
| 211 | // ErrFatal("could not allocate data for entire image"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 212 | ALOGE("could not allocate data for entire image"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 213 | return FALSE; |
| 214 | } |
| 215 | |
| 216 | got = fread(Data, 1, size, infile); |
| 217 | if (got != size){ |
| 218 | // ErrFatal("could not read the rest of the image"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 219 | ALOGE("could not read the rest of the image"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 220 | return FALSE; |
| 221 | } |
| 222 | |
| 223 | CheckSectionsAllocated(); |
| 224 | Sections[SectionsRead].Data = Data; |
Jeff Sharkey | 31b17e6 | 2013-08-21 11:27:36 -0700 | [diff] [blame] | 225 | Sections[SectionsRead].Offset = cp; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 226 | Sections[SectionsRead].Size = size; |
| 227 | Sections[SectionsRead].Type = PSEUDO_IMAGE_MARKER; |
| 228 | SectionsRead ++; |
| 229 | HaveAll = 1; |
| 230 | } |
| 231 | return TRUE; |
| 232 | |
| 233 | case M_EOI: // in case it's a tables-only JPEG stream |
| 234 | fprintf(stderr,"No image in jpeg!\n"); |
| 235 | return FALSE; |
| 236 | |
| 237 | case M_COM: // Comment section |
| 238 | if (HaveCom || ((ReadMode & READ_METADATA) == 0)){ |
| 239 | // Discard this section. |
| 240 | free(Sections[--SectionsRead].Data); |
| 241 | }else{ |
| 242 | process_COM(Data, itemlen); |
| 243 | HaveCom = TRUE; |
| 244 | } |
| 245 | break; |
| 246 | |
| 247 | case M_JFIF: |
| 248 | // Regular jpegs always have this tag, exif images have the exif |
| 249 | // marker instead, althogh ACDsee will write images with both markers. |
| 250 | // this program will re-create this marker on absence of exif marker. |
| 251 | // hence no need to keep the copy from the file. |
| 252 | free(Sections[--SectionsRead].Data); |
| 253 | break; |
| 254 | |
| 255 | case M_EXIF: |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 256 | // There can be different section using the same marker. |
| 257 | if (ReadMode & READ_METADATA){ |
| 258 | if (memcmp(Data+2, "Exif", 4) == 0){ |
| 259 | process_EXIF(Data, itemlen); |
| 260 | break; |
| 261 | }else if (memcmp(Data+2, "http:", 5) == 0){ |
| 262 | Sections[SectionsRead-1].Type = M_XMP; // Change tag for internal purposes. |
| 263 | if (ShowTags){ |
| 264 | printf("Image cotains XMP section, %d bytes long\n", itemlen); |
| 265 | if (ShowTags){ |
| 266 | ShowXmp(Sections[SectionsRead-1]); |
| 267 | } |
| 268 | } |
| 269 | break; |
| 270 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 271 | } |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 272 | // Oterwise, discard this section. |
| 273 | free(Sections[--SectionsRead].Data); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 274 | break; |
| 275 | |
| 276 | case M_IPTC: |
| 277 | if (ReadMode & READ_METADATA){ |
| 278 | if (ShowTags){ |
| 279 | printf("Image cotains IPTC section, %d bytes long\n", itemlen); |
| 280 | } |
| 281 | // Note: We just store the IPTC section. Its relatively straightforward |
| 282 | // and we don't act on any part of it, so just display it at parse time. |
| 283 | }else{ |
| 284 | free(Sections[--SectionsRead].Data); |
| 285 | } |
| 286 | break; |
| 287 | |
| 288 | case M_SOF0: |
| 289 | case M_SOF1: |
| 290 | case M_SOF2: |
| 291 | case M_SOF3: |
| 292 | case M_SOF5: |
| 293 | case M_SOF6: |
| 294 | case M_SOF7: |
| 295 | case M_SOF9: |
| 296 | case M_SOF10: |
| 297 | case M_SOF11: |
| 298 | case M_SOF13: |
| 299 | case M_SOF14: |
| 300 | case M_SOF15: |
| 301 | process_SOFn(Data, marker); |
| 302 | break; |
| 303 | default: |
| 304 | // Skip any other sections. |
| 305 | if (ShowTags){ |
| 306 | printf("Jpeg section marker 0x%02x size %d\n",marker, itemlen); |
| 307 | } |
| 308 | break; |
| 309 | } |
| 310 | } |
| 311 | return TRUE; |
| 312 | } |
| 313 | |
| 314 | //-------------------------------------------------------------------------- |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 315 | // Parse the marker buffer until SOS or EOI is seen; |
| 316 | //-------------------------------------------------------------------------- |
| 317 | int ReadJpegSectionsFromBuffer (unsigned char* buffer, unsigned int buffer_size, ReadMode_t ReadMode) |
| 318 | { |
| 319 | int a; |
| 320 | unsigned int pos = 0; |
| 321 | int HaveCom = FALSE; |
| 322 | |
| 323 | if (!buffer) { |
| 324 | return FALSE; |
| 325 | } |
| 326 | |
| 327 | if (buffer_size < 1) { |
| 328 | return FALSE; |
| 329 | } |
| 330 | |
| 331 | a = (int) buffer[pos++]; |
| 332 | |
| 333 | if (a != 0xff || buffer[pos++] != M_SOI){ |
| 334 | return FALSE; |
| 335 | } |
| 336 | |
| 337 | for(;;){ |
| 338 | int itemlen; |
| 339 | int marker = 0; |
| 340 | int ll,lh, got; |
| 341 | uchar * Data; |
| 342 | |
| 343 | CheckSectionsAllocated(); |
| 344 | |
| 345 | for (a=0;a<=16;a++){ |
| 346 | marker = buffer[pos++]; |
| 347 | if (marker != 0xff) break; |
| 348 | |
| 349 | if (a >= 16){ |
| 350 | fprintf(stderr,"too many padding bytes\n"); |
| 351 | return FALSE; |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | Sections[SectionsRead].Type = marker; |
Jeff Sharkey | 31b17e6 | 2013-08-21 11:27:36 -0700 | [diff] [blame] | 356 | Sections[SectionsRead].Offset = pos; |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 357 | |
| 358 | // Read the length of the section. |
| 359 | lh = buffer[pos++]; |
| 360 | ll = buffer[pos++]; |
| 361 | |
| 362 | itemlen = (lh << 8) | ll; |
| 363 | |
| 364 | if (itemlen < 2) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 365 | ALOGE("invalid marker"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 366 | return FALSE; |
| 367 | } |
| 368 | |
| 369 | Sections[SectionsRead].Size = itemlen; |
| 370 | |
| 371 | Data = (uchar *)malloc(itemlen); |
| 372 | if (Data == NULL) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 373 | ALOGE("Could not allocate memory"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 374 | return 0; |
| 375 | } |
| 376 | Sections[SectionsRead].Data = Data; |
| 377 | |
| 378 | // Store first two pre-read bytes. |
| 379 | Data[0] = (uchar)lh; |
| 380 | Data[1] = (uchar)ll; |
| 381 | |
| 382 | if (pos+itemlen-2 > buffer_size) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 383 | ALOGE("Premature end of file?"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 384 | return FALSE; |
| 385 | } |
| 386 | |
| 387 | memcpy(Data+2, buffer+pos, itemlen-2); // Read the whole section. |
| 388 | pos += itemlen-2; |
| 389 | |
| 390 | SectionsRead += 1; |
| 391 | |
| 392 | printf("reading marker %d", marker); |
| 393 | switch(marker){ |
| 394 | |
| 395 | case M_SOS: // stop before hitting compressed data |
| 396 | // If reading entire image is requested, read the rest of the data. |
| 397 | if (ReadMode & READ_IMAGE){ |
| 398 | int size; |
| 399 | // Determine how much file is left. |
| 400 | size = buffer_size - pos; |
| 401 | |
| 402 | if (size < 1) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 403 | ALOGE("could not read the rest of the image"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 404 | return FALSE; |
| 405 | } |
| 406 | Data = (uchar *)malloc(size); |
| 407 | if (Data == NULL) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 408 | ALOGE("%d: could not allocate data for entire image size: %d", __LINE__, size); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 409 | return FALSE; |
| 410 | } |
| 411 | |
| 412 | memcpy(Data, buffer+pos, size); |
| 413 | |
| 414 | CheckSectionsAllocated(); |
| 415 | Sections[SectionsRead].Data = Data; |
Jeff Sharkey | 31b17e6 | 2013-08-21 11:27:36 -0700 | [diff] [blame] | 416 | Sections[SectionsRead].Offset = pos; |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 417 | Sections[SectionsRead].Size = size; |
| 418 | Sections[SectionsRead].Type = PSEUDO_IMAGE_MARKER; |
| 419 | SectionsRead ++; |
| 420 | HaveAll = 1; |
| 421 | } |
| 422 | return TRUE; |
| 423 | |
| 424 | case M_EOI: // in case it's a tables-only JPEG stream |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 425 | ALOGE("No image in jpeg!\n"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 426 | return FALSE; |
| 427 | |
| 428 | case M_COM: // Comment section |
| 429 | if (HaveCom || ((ReadMode & READ_METADATA) == 0)){ |
| 430 | // Discard this section. |
| 431 | free(Sections[--SectionsRead].Data); |
| 432 | }else{ |
| 433 | process_COM(Data, itemlen); |
| 434 | HaveCom = TRUE; |
| 435 | } |
| 436 | break; |
| 437 | |
| 438 | case M_JFIF: |
| 439 | // Regular jpegs always have this tag, exif images have the exif |
| 440 | // marker instead, althogh ACDsee will write images with both markers. |
| 441 | // this program will re-create this marker on absence of exif marker. |
| 442 | // hence no need to keep the copy from the file. |
| 443 | free(Sections[--SectionsRead].Data); |
| 444 | break; |
| 445 | |
| 446 | case M_EXIF: |
| 447 | // There can be different section using the same marker. |
| 448 | if (ReadMode & READ_METADATA){ |
| 449 | if (memcmp(Data+2, "Exif", 4) == 0){ |
| 450 | process_EXIF(Data, itemlen); |
| 451 | break; |
| 452 | }else if (memcmp(Data+2, "http:", 5) == 0){ |
| 453 | Sections[SectionsRead-1].Type = M_XMP; // Change tag for internal purposes. |
| 454 | if (ShowTags){ |
Steve Block | 84f254d | 2011-12-20 16:20:38 +0000 | [diff] [blame] | 455 | ALOGD("Image cotains XMP section, %d bytes long\n", itemlen); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 456 | if (ShowTags){ |
| 457 | ShowXmp(Sections[SectionsRead-1]); |
| 458 | } |
| 459 | } |
| 460 | break; |
| 461 | } |
| 462 | } |
| 463 | // Oterwise, discard this section. |
| 464 | free(Sections[--SectionsRead].Data); |
| 465 | break; |
| 466 | |
| 467 | case M_IPTC: |
| 468 | if (ReadMode & READ_METADATA){ |
| 469 | if (ShowTags){ |
Steve Block | 84f254d | 2011-12-20 16:20:38 +0000 | [diff] [blame] | 470 | ALOGD("Image cotains IPTC section, %d bytes long\n", itemlen); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 471 | } |
| 472 | // Note: We just store the IPTC section. Its relatively straightforward |
| 473 | // and we don't act on any part of it, so just display it at parse time. |
| 474 | }else{ |
| 475 | free(Sections[--SectionsRead].Data); |
| 476 | } |
| 477 | break; |
| 478 | |
| 479 | case M_SOF0: |
| 480 | case M_SOF1: |
| 481 | case M_SOF2: |
| 482 | case M_SOF3: |
| 483 | case M_SOF5: |
| 484 | case M_SOF6: |
| 485 | case M_SOF7: |
| 486 | case M_SOF9: |
| 487 | case M_SOF10: |
| 488 | case M_SOF11: |
| 489 | case M_SOF13: |
| 490 | case M_SOF14: |
| 491 | case M_SOF15: |
| 492 | process_SOFn(Data, marker); |
| 493 | break; |
| 494 | default: |
| 495 | // Skip any other sections. |
| 496 | if (ShowTags){ |
Steve Block | 84f254d | 2011-12-20 16:20:38 +0000 | [diff] [blame] | 497 | ALOGD("Jpeg section marker 0x%02x size %d\n",marker, itemlen); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 498 | } |
| 499 | break; |
| 500 | } |
| 501 | } |
| 502 | return TRUE; |
| 503 | } |
| 504 | |
| 505 | //-------------------------------------------------------------------------- |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 506 | // Discard read data. |
| 507 | //-------------------------------------------------------------------------- |
| 508 | void DiscardData(void) |
| 509 | { |
| 510 | int a; |
| 511 | |
| 512 | for (a=0;a<SectionsRead;a++){ |
| 513 | free(Sections[a].Data); |
| 514 | } |
| 515 | |
| 516 | memset(&ImageInfo, 0, sizeof(ImageInfo)); |
| 517 | SectionsRead = 0; |
| 518 | HaveAll = 0; |
| 519 | } |
| 520 | |
| 521 | //-------------------------------------------------------------------------- |
| 522 | // Read image data. |
| 523 | //-------------------------------------------------------------------------- |
| 524 | int ReadJpegFile(const char * FileName, ReadMode_t ReadMode) |
| 525 | { |
| 526 | FILE * infile; |
| 527 | int ret; |
| 528 | |
| 529 | infile = fopen(FileName, "rb"); // Unix ignores 'b', windows needs it. |
| 530 | |
| 531 | if (infile == NULL) { |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 532 | ALOGE("can't open '%s'", FileName); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 533 | fprintf(stderr, "can't open '%s'\n", FileName); |
| 534 | return FALSE; |
| 535 | } |
| 536 | |
| 537 | // Scan the JPEG headers. |
| 538 | printf("ReadJpegSections"); |
| 539 | ret = ReadJpegSections(infile, ReadMode); |
| 540 | if (!ret){ |
Steve Block | 56c2f1e | 2011-10-20 14:24:07 +0100 | [diff] [blame] | 541 | ALOGV("Cannot parse JPEG sections for file: %s", FileName); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 542 | fprintf(stderr,"Not JPEG: %s\n",FileName); |
| 543 | } |
| 544 | |
| 545 | fclose(infile); |
| 546 | |
| 547 | if (ret == FALSE){ |
| 548 | DiscardData(); |
| 549 | } |
| 550 | return ret; |
| 551 | } |
| 552 | |
| 553 | |
| 554 | //-------------------------------------------------------------------------- |
| 555 | // Replace or remove exif thumbnail |
| 556 | //-------------------------------------------------------------------------- |
| 557 | int SaveThumbnail(char * ThumbFileName) |
| 558 | { |
| 559 | FILE * ThumbnailFile; |
| 560 | |
| 561 | if (ImageInfo.ThumbnailOffset == 0 || ImageInfo.ThumbnailSize == 0){ |
| 562 | fprintf(stderr,"Image contains no thumbnail\n"); |
| 563 | return FALSE; |
| 564 | } |
| 565 | |
| 566 | if (strcmp(ThumbFileName, "-") == 0){ |
| 567 | // A filename of '-' indicates thumbnail goes to stdout. |
| 568 | // This doesn't make much sense under Windows, so this feature is unix only. |
| 569 | ThumbnailFile = stdout; |
| 570 | }else{ |
| 571 | ThumbnailFile = fopen(ThumbFileName,"wb"); |
| 572 | } |
| 573 | |
| 574 | if (ThumbnailFile){ |
| 575 | uchar * ThumbnailPointer; |
| 576 | Section_t * ExifSection; |
| 577 | ExifSection = FindSection(M_EXIF); |
| 578 | ThumbnailPointer = ExifSection->Data+ImageInfo.ThumbnailOffset+8; |
| 579 | |
| 580 | fwrite(ThumbnailPointer, ImageInfo.ThumbnailSize ,1, ThumbnailFile); |
| 581 | fclose(ThumbnailFile); |
| 582 | return TRUE; |
| 583 | }else{ |
| 584 | // ErrFatal("Could not write thumbnail file"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 585 | ALOGE("Could not write thumbnail file"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 586 | return FALSE; |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | //-------------------------------------------------------------------------- |
| 591 | // Replace or remove exif thumbnail |
| 592 | //-------------------------------------------------------------------------- |
Tyler Luu | 13714f2 | 2011-09-27 20:04:35 -0500 | [diff] [blame] | 593 | int ReplaceThumbnailFromBuffer(const char * Thumb, int ThumbLen) |
| 594 | { |
| 595 | int NewExifSize; |
| 596 | Section_t * ExifSection; |
| 597 | uchar * ThumbnailPointer; |
| 598 | |
| 599 | if (ImageInfo.ThumbnailOffset == 0 || ImageInfo.ThumbnailAtEnd == FALSE){ |
| 600 | if (Thumb == NULL){ |
| 601 | // Delete of nonexistent thumbnail (not even pointers present) |
| 602 | // No action, no error. |
| 603 | return FALSE; |
| 604 | } |
| 605 | |
| 606 | // Adding or removing of thumbnail is not possible - that would require rearranging |
| 607 | // of the exif header, which is risky, and jhad doesn't know how to do. |
| 608 | fprintf(stderr,"Image contains no thumbnail to replace - add is not possible\n"); |
| 609 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 610 | ALOGE("Image contains no thumbnail to replace - add is not possible\n"); |
Tyler Luu | 13714f2 | 2011-09-27 20:04:35 -0500 | [diff] [blame] | 611 | #endif |
| 612 | return FALSE; |
| 613 | } |
| 614 | |
| 615 | if (Thumb) { |
| 616 | if (ThumbLen + ImageInfo.ThumbnailOffset > 0x10000-20){ |
| 617 | //ErrFatal("Thumbnail is too large to insert into exif header"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 618 | ALOGE("Thumbnail is too large to insert into exif header"); |
Tyler Luu | 13714f2 | 2011-09-27 20:04:35 -0500 | [diff] [blame] | 619 | return FALSE; |
| 620 | } |
| 621 | } else { |
| 622 | if (ImageInfo.ThumbnailSize == 0){ |
| 623 | return FALSE; |
| 624 | } |
| 625 | |
| 626 | ThumbLen = 0; |
| 627 | } |
| 628 | |
| 629 | ExifSection = FindSection(M_EXIF); |
| 630 | |
| 631 | NewExifSize = ImageInfo.ThumbnailOffset+8+ThumbLen; |
| 632 | ExifSection->Data = (uchar *)realloc(ExifSection->Data, NewExifSize); |
| 633 | |
| 634 | ThumbnailPointer = ExifSection->Data+ImageInfo.ThumbnailOffset+8; |
| 635 | |
| 636 | if (Thumb){ |
| 637 | memcpy(ThumbnailPointer, Thumb, ThumbLen); |
| 638 | } |
| 639 | |
| 640 | ImageInfo.ThumbnailSize = ThumbLen; |
| 641 | |
| 642 | Put32u(ExifSection->Data+ImageInfo.ThumbnailSizeOffset+8, ThumbLen); |
| 643 | |
| 644 | ExifSection->Data[0] = (uchar)(NewExifSize >> 8); |
| 645 | ExifSection->Data[1] = (uchar)NewExifSize; |
| 646 | ExifSection->Size = NewExifSize; |
| 647 | |
| 648 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 649 | ALOGE("ReplaceThumbnail successful thumblen %d", ThumbLen); |
Tyler Luu | 13714f2 | 2011-09-27 20:04:35 -0500 | [diff] [blame] | 650 | #endif |
| 651 | return TRUE; |
| 652 | } |
| 653 | |
| 654 | //-------------------------------------------------------------------------- |
| 655 | // Replace or remove exif thumbnail |
| 656 | //-------------------------------------------------------------------------- |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 657 | int ReplaceThumbnail(const char * ThumbFileName) |
| 658 | { |
| 659 | FILE * ThumbnailFile; |
| 660 | int ThumbLen, NewExifSize; |
| 661 | Section_t * ExifSection; |
| 662 | uchar * ThumbnailPointer; |
| 663 | |
| 664 | if (ImageInfo.ThumbnailOffset == 0 || ImageInfo.ThumbnailAtEnd == FALSE){ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 665 | if (ThumbFileName == NULL){ |
| 666 | // Delete of nonexistent thumbnail (not even pointers present) |
| 667 | // No action, no error. |
| 668 | return FALSE; |
| 669 | } |
| 670 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 671 | // Adding or removing of thumbnail is not possible - that would require rearranging |
| 672 | // of the exif header, which is risky, and jhad doesn't know how to do. |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 673 | fprintf(stderr,"Image contains no thumbnail to replace - add is not possible\n"); |
| 674 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 675 | ALOGE("Image contains no thumbnail to replace - add is not possible\n"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 676 | #endif |
| 677 | return FALSE; |
| 678 | } |
| 679 | |
| 680 | if (ThumbFileName){ |
| 681 | ThumbnailFile = fopen(ThumbFileName,"rb"); |
| 682 | |
| 683 | if (ThumbnailFile == NULL){ |
| 684 | //ErrFatal("Could not read thumbnail file"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 685 | ALOGE("Could not read thumbnail file"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 686 | return FALSE; |
| 687 | } |
| 688 | |
| 689 | // get length |
| 690 | fseek(ThumbnailFile, 0, SEEK_END); |
| 691 | |
| 692 | ThumbLen = ftell(ThumbnailFile); |
| 693 | fseek(ThumbnailFile, 0, SEEK_SET); |
| 694 | |
| 695 | if (ThumbLen + ImageInfo.ThumbnailOffset > 0x10000-20){ |
| 696 | //ErrFatal("Thumbnail is too large to insert into exif header"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 697 | ALOGE("Thumbnail is too large to insert into exif header"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 698 | return FALSE; |
| 699 | } |
| 700 | }else{ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 701 | if (ImageInfo.ThumbnailSize == 0){ |
| 702 | return FALSE; |
| 703 | } |
| 704 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 705 | ThumbLen = 0; |
| 706 | ThumbnailFile = NULL; |
| 707 | } |
| 708 | |
| 709 | ExifSection = FindSection(M_EXIF); |
| 710 | |
| 711 | NewExifSize = ImageInfo.ThumbnailOffset+8+ThumbLen; |
| 712 | ExifSection->Data = (uchar *)realloc(ExifSection->Data, NewExifSize); |
| 713 | |
| 714 | ThumbnailPointer = ExifSection->Data+ImageInfo.ThumbnailOffset+8; |
| 715 | |
| 716 | if (ThumbnailFile){ |
| 717 | fread(ThumbnailPointer, ThumbLen, 1, ThumbnailFile); |
| 718 | fclose(ThumbnailFile); |
| 719 | } |
| 720 | |
| 721 | ImageInfo.ThumbnailSize = ThumbLen; |
| 722 | |
| 723 | Put32u(ExifSection->Data+ImageInfo.ThumbnailSizeOffset+8, ThumbLen); |
| 724 | |
| 725 | ExifSection->Data[0] = (uchar)(NewExifSize >> 8); |
| 726 | ExifSection->Data[1] = (uchar)NewExifSize; |
| 727 | ExifSection->Size = NewExifSize; |
| 728 | |
| 729 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 730 | ALOGE("ReplaceThumbnail successful thumblen %d", ThumbLen); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 731 | #endif |
| 732 | return TRUE; |
| 733 | } |
| 734 | |
| 735 | |
| 736 | //-------------------------------------------------------------------------- |
| 737 | // Discard everything but the exif and comment sections. |
| 738 | //-------------------------------------------------------------------------- |
| 739 | void DiscardAllButExif(void) |
| 740 | { |
| 741 | Section_t ExifKeeper; |
| 742 | Section_t CommentKeeper; |
| 743 | Section_t IptcKeeper; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 744 | Section_t XmpKeeper; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 745 | int a; |
| 746 | |
| 747 | memset(&ExifKeeper, 0, sizeof(ExifKeeper)); |
| 748 | memset(&CommentKeeper, 0, sizeof(CommentKeeper)); |
| 749 | memset(&IptcKeeper, 0, sizeof(IptcKeeper)); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 750 | memset(&XmpKeeper, 0, sizeof(IptcKeeper)); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 751 | |
| 752 | for (a=0;a<SectionsRead;a++){ |
| 753 | if (Sections[a].Type == M_EXIF && ExifKeeper.Type == 0){ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 754 | ExifKeeper = Sections[a]; |
| 755 | }else if (Sections[a].Type == M_XMP && XmpKeeper.Type == 0){ |
| 756 | XmpKeeper = Sections[a]; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 757 | }else if (Sections[a].Type == M_COM && CommentKeeper.Type == 0){ |
| 758 | CommentKeeper = Sections[a]; |
| 759 | }else if (Sections[a].Type == M_IPTC && IptcKeeper.Type == 0){ |
| 760 | IptcKeeper = Sections[a]; |
| 761 | }else{ |
| 762 | free(Sections[a].Data); |
| 763 | } |
| 764 | } |
| 765 | SectionsRead = 0; |
| 766 | if (ExifKeeper.Type){ |
| 767 | CheckSectionsAllocated(); |
| 768 | Sections[SectionsRead++] = ExifKeeper; |
| 769 | } |
| 770 | if (CommentKeeper.Type){ |
| 771 | CheckSectionsAllocated(); |
| 772 | Sections[SectionsRead++] = CommentKeeper; |
| 773 | } |
| 774 | if (IptcKeeper.Type){ |
| 775 | CheckSectionsAllocated(); |
| 776 | Sections[SectionsRead++] = IptcKeeper; |
| 777 | } |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 778 | |
| 779 | if (XmpKeeper.Type){ |
| 780 | CheckSectionsAllocated(); |
| 781 | Sections[SectionsRead++] = XmpKeeper; |
| 782 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | //-------------------------------------------------------------------------- |
| 786 | // Write image data back to disk. |
| 787 | //-------------------------------------------------------------------------- |
| 788 | int WriteJpegFile(const char * FileName) |
| 789 | { |
| 790 | FILE * outfile; |
| 791 | int a; |
| 792 | |
| 793 | if (!HaveAll){ |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 794 | ALOGE("Can't write back - didn't read all"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 795 | return FALSE; |
| 796 | } |
| 797 | |
| 798 | outfile = fopen(FileName,"wb"); |
| 799 | if (outfile == NULL){ |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 800 | ALOGE("Could not open file for write"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 801 | return FALSE; |
| 802 | } |
| 803 | |
| 804 | // Initial static jpeg marker. |
| 805 | fputc(0xff,outfile); |
| 806 | fputc(0xd8,outfile); |
| 807 | |
| 808 | if (Sections[0].Type != M_EXIF && Sections[0].Type != M_JFIF){ |
| 809 | // The image must start with an exif or jfif marker. If we threw those away, create one. |
| 810 | static uchar JfifHead[18] = { |
| 811 | 0xff, M_JFIF, |
| 812 | 0x00, 0x10, 'J' , 'F' , 'I' , 'F' , 0x00, 0x01, |
| 813 | 0x01, 0x01, 0x01, 0x2C, 0x01, 0x2C, 0x00, 0x00 |
| 814 | }; |
| 815 | fwrite(JfifHead, 18, 1, outfile); |
| 816 | } |
| 817 | |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 818 | int writeOk = FALSE; |
| 819 | int nWrite = 0; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 820 | // Write all the misc sections |
| 821 | for (a=0;a<SectionsRead-1;a++){ |
| 822 | fputc(0xff,outfile); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 823 | fputc((unsigned char)Sections[a].Type, outfile); |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 824 | nWrite = fwrite(Sections[a].Data, 1, Sections[a].Size, outfile); |
| 825 | writeOk = (nWrite == Sections[a].Size); |
| 826 | if(!writeOk){ |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 827 | ALOGE("write section %d failed expect %d actual %d",a,Sections[a].Size,nWrite); |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 828 | break; |
| 829 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | // Write the remaining image data. |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 833 | if (writeOk){ |
| 834 | nWrite = fwrite(Sections[a].Data, 1,Sections[a].Size, outfile); |
| 835 | writeOk = (nWrite == Sections[a].Size); |
| 836 | if (!writeOk){ |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 837 | ALOGE("write section %d failed expect %d actual %d",a,Sections[a].Size,nWrite); |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 838 | } |
| 839 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 840 | |
| 841 | fclose(outfile); |
Benny Wong | 37f509c | 2009-09-10 13:29:41 -0500 | [diff] [blame] | 842 | return writeOk; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 843 | } |
| 844 | |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 845 | //-------------------------------------------------------------------------- |
| 846 | // Write image to a buffer |
| 847 | //-------------------------------------------------------------------------- |
| 848 | int WriteJpegToBuffer(unsigned char* buffer, unsigned int buffer_size) |
| 849 | { |
| 850 | unsigned int pos = 0; |
| 851 | int a; |
| 852 | |
| 853 | if (!buffer) { |
| 854 | return FALSE; |
| 855 | } |
| 856 | |
| 857 | if (buffer_size < 1) { |
| 858 | return FALSE; |
| 859 | } |
| 860 | |
| 861 | if (!HaveAll){ |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 862 | ALOGE("Can't write back - didn't read all"); |
Tyler Luu | 24757b4 | 2011-08-24 20:53:34 -0500 | [diff] [blame] | 863 | return FALSE; |
| 864 | } |
| 865 | |
| 866 | // Initial static jpeg marker. |
| 867 | buffer[pos++] = 0xff; |
| 868 | buffer[pos++] = 0xd8; |
| 869 | |
| 870 | if (Sections[0].Type != M_EXIF && Sections[0].Type != M_JFIF){ |
| 871 | // The image must start with an exif or jfif marker. If we threw those away, create one. |
| 872 | static uchar JfifHead[18] = { |
| 873 | 0xff, M_JFIF, |
| 874 | 0x00, 0x10, 'J' , 'F' , 'I' , 'F' , 0x00, 0x01, |
| 875 | 0x01, 0x01, 0x01, 0x2C, 0x01, 0x2C, 0x00, 0x00 |
| 876 | }; |
| 877 | memcpy(buffer+pos, JfifHead, 18); |
| 878 | pos+= 18; |
| 879 | } |
| 880 | |
| 881 | int writeOk = FALSE; |
| 882 | int nWrite = 0; |
| 883 | // Write all the misc sections |
| 884 | for (a=0;a<SectionsRead-1;a++){ |
| 885 | buffer[pos++] = 0xff; |
| 886 | buffer[pos++] = (unsigned char) Sections[a].Type; |
| 887 | if (pos+Sections[a].Size > buffer_size) { |
| 888 | writeOk = FALSE; |
| 889 | break; |
| 890 | } |
| 891 | memcpy(buffer+pos, Sections[a].Data, Sections[a].Size); |
| 892 | pos += Sections[a].Size; |
| 893 | writeOk = TRUE; |
| 894 | } |
| 895 | |
| 896 | // Write the remaining image data. |
| 897 | if (writeOk){ |
| 898 | if (pos+Sections[a].Size > buffer_size) { |
| 899 | writeOk = FALSE; |
| 900 | } else { |
| 901 | memcpy(buffer+pos, Sections[a].Data, Sections[a].Size); |
| 902 | pos += Sections[a].Size; |
| 903 | writeOk = TRUE; |
| 904 | } |
| 905 | } |
| 906 | return writeOk; |
| 907 | } |
| 908 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 909 | |
| 910 | //-------------------------------------------------------------------------- |
| 911 | // Check if image has exif header. |
| 912 | //-------------------------------------------------------------------------- |
| 913 | Section_t * FindSection(int SectionType) |
| 914 | { |
| 915 | int a; |
| 916 | |
| 917 | for (a=0;a<SectionsRead;a++){ |
| 918 | if (Sections[a].Type == SectionType){ |
| 919 | return &Sections[a]; |
| 920 | } |
| 921 | } |
| 922 | // Could not be found. |
| 923 | return NULL; |
| 924 | } |
| 925 | |
| 926 | //-------------------------------------------------------------------------- |
| 927 | // Remove a certain type of section. |
| 928 | //-------------------------------------------------------------------------- |
| 929 | int RemoveSectionType(int SectionType) |
| 930 | { |
| 931 | int a; |
| 932 | for (a=0;a<SectionsRead-1;a++){ |
| 933 | if (Sections[a].Type == SectionType){ |
| 934 | // Free up this section |
| 935 | free (Sections[a].Data); |
| 936 | // Move succeding sections back by one to close space in array. |
| 937 | memmove(Sections+a, Sections+a+1, sizeof(Section_t) * (SectionsRead-a)); |
| 938 | SectionsRead -= 1; |
| 939 | return TRUE; |
| 940 | } |
| 941 | } |
| 942 | return FALSE; |
| 943 | } |
| 944 | |
| 945 | //-------------------------------------------------------------------------- |
| 946 | // Remove sectons not part of image and not exif or comment sections. |
| 947 | //-------------------------------------------------------------------------- |
| 948 | int RemoveUnknownSections(void) |
| 949 | { |
| 950 | int a; |
| 951 | int Modified = FALSE; |
| 952 | for (a=0;a<SectionsRead-1;){ |
| 953 | switch(Sections[a].Type){ |
| 954 | case M_SOF0: |
| 955 | case M_SOF1: |
| 956 | case M_SOF2: |
| 957 | case M_SOF3: |
| 958 | case M_SOF5: |
| 959 | case M_SOF6: |
| 960 | case M_SOF7: |
| 961 | case M_SOF9: |
| 962 | case M_SOF10: |
| 963 | case M_SOF11: |
| 964 | case M_SOF13: |
| 965 | case M_SOF14: |
| 966 | case M_SOF15: |
| 967 | case M_SOI: |
| 968 | case M_EOI: |
| 969 | case M_SOS: |
| 970 | case M_JFIF: |
| 971 | case M_EXIF: |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 972 | case M_XMP: |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 973 | case M_COM: |
| 974 | case M_DQT: |
| 975 | case M_DHT: |
| 976 | case M_DRI: |
| 977 | case M_IPTC: |
| 978 | // keep. |
| 979 | a++; |
| 980 | break; |
| 981 | default: |
| 982 | // Unknown. Delete. |
| 983 | free (Sections[a].Data); |
| 984 | // Move succeding sections back by one to close space in array. |
| 985 | memmove(Sections+a, Sections+a+1, sizeof(Section_t) * (SectionsRead-a)); |
| 986 | SectionsRead -= 1; |
| 987 | Modified = TRUE; |
| 988 | } |
| 989 | } |
| 990 | return Modified; |
| 991 | } |
| 992 | |
| 993 | //-------------------------------------------------------------------------- |
| 994 | // Add a section (assume it doesn't already exist) - used for |
| 995 | // adding comment sections and exif sections |
| 996 | //-------------------------------------------------------------------------- |
| 997 | Section_t * CreateSection(int SectionType, unsigned char * Data, int Size) |
| 998 | { |
| 999 | Section_t * NewSection; |
| 1000 | int a; |
| 1001 | int NewIndex; |
| 1002 | NewIndex = 2; |
| 1003 | |
| 1004 | if (SectionType == M_EXIF) NewIndex = 0; // Exif alwas goes first! |
| 1005 | |
| 1006 | // Insert it in third position - seems like a safe place to put |
| 1007 | // things like comments. |
| 1008 | |
| 1009 | if (SectionsRead < NewIndex){ |
| 1010 | // ErrFatal("Too few sections!"); |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 1011 | ALOGE("Too few sections!"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1012 | return FALSE; |
| 1013 | } |
| 1014 | |
| 1015 | CheckSectionsAllocated(); |
| 1016 | for (a=SectionsRead;a>NewIndex;a--){ |
| 1017 | Sections[a] = Sections[a-1]; |
| 1018 | } |
| 1019 | SectionsRead += 1; |
| 1020 | |
| 1021 | NewSection = Sections+NewIndex; |
| 1022 | |
| 1023 | NewSection->Type = SectionType; |
| 1024 | NewSection->Size = Size; |
| 1025 | NewSection->Data = Data; |
| 1026 | |
| 1027 | return NewSection; |
| 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | //-------------------------------------------------------------------------- |
| 1032 | // Initialisation. |
| 1033 | //-------------------------------------------------------------------------- |
| 1034 | void ResetJpgfile(void) |
| 1035 | { |
| 1036 | if (Sections == NULL){ |
| 1037 | Sections = (Section_t *)malloc(sizeof(Section_t)*5); |
| 1038 | SectionsAllocated = 5; |
| 1039 | } |
| 1040 | |
| 1041 | SectionsRead = 0; |
| 1042 | HaveAll = 0; |
| 1043 | } |