src/metaflac/operations.c

   1 /* metaflac - Command-line FLAC metadata editor
   2  * Copyright (C) 2001,2002  Josh Coalson
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #include "operations.h"
  20 #include "usage.h"
  21 #include "utils.h"
  22 #include "FLAC/assert.h"
  23 #include "FLAC/metadata.h"
  24 #include "share/grabbag.h"
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 static void show_version();
  30 static FLAC__bool do_major_operation(const CommandLineOptions *options);
  31 static FLAC__bool do_major_operation_on_file(const char *filename, const CommandLineOptions *options);
  32 static FLAC__bool do_major_operation__list(const char *filename, FLAC__Metadata_Chain *chain, const CommandLineOptions *options);
  33 static FLAC__bool do_major_operation__append(FLAC__Metadata_Chain *chain, const CommandLineOptions *options);
  34 static FLAC__bool do_major_operation__remove(FLAC__Metadata_Chain *chain, const CommandLineOptions *options);
  35 static FLAC__bool do_major_operation__remove_all(FLAC__Metadata_Chain *chain, const CommandLineOptions *options);
  36 static FLAC__bool do_shorthand_operations(const CommandLineOptions *options);
  37 static FLAC__bool do_shorthand_operations_on_file(const char *filename, const CommandLineOptions *options);
  38 static FLAC__bool do_shorthand_operation(const char *filename, FLAC__bool prefix_with_filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write, FLAC__bool utf8_convert);
  39 static FLAC__bool do_shorthand_operation__add_replay_gain(char **filenames, unsigned num_files, FLAC__bool preserve_modtime);
  40 static FLAC__bool do_shorthand_operation__add_padding(const char *filename, FLAC__Metadata_Chain *chain, unsigned length, FLAC__bool *needs_write);
  41
  42 static FLAC__bool passes_filter(const CommandLineOptions *options, const FLAC__StreamMetadata *block, unsigned block_number);
  43 static void write_metadata(const char *filename, FLAC__StreamMetadata *block, unsigned block_number, FLAC__bool raw, FLAC__bool hexdump_application);
  44
  45 /* from operations_shorthand_seektable.c */
  46 extern FLAC__bool do_shorthand_operation__add_seekpoints(const char *filename, FLAC__Metadata_Chain *chain, const char *specification, FLAC__bool *needs_write);
  47
  48 /* from operations_shorthand_streaminfo.c */
  49 extern FLAC__bool do_shorthand_operation__streaminfo(const char *filename, FLAC__bool prefix_with_filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write);
  50
  51 /* from operations_shorthand_vorbiscomment.c */
  52 extern FLAC__bool do_shorthand_operation__vorbis_comment(const char *filename, FLAC__bool prefix_with_filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write, FLAC__bool raw);
  53
  54 FLAC__bool do_operations(const CommandLineOptions *options)
  55 {
  56         FLAC__bool ok = true;
  57
  58         if(options->show_long_help) {
  59                 long_usage(0);
  60         }
  61         if(options->show_version) {
  62                 show_version();
  63         }
  64         else if(options->args.checks.num_major_ops > 0) {
  65                 FLAC__ASSERT(options->args.checks.num_shorthand_ops == 0);
  66                 FLAC__ASSERT(options->args.checks.num_major_ops == 1);
  67                 FLAC__ASSERT(options->args.checks.num_major_ops == options->ops.num_operations);
  68                 ok = do_major_operation(options);
  69         }
  70         else if(options->args.checks.num_shorthand_ops > 0) {
  71                 FLAC__ASSERT(options->args.checks.num_shorthand_ops == options->ops.num_operations);
  72                 ok = do_shorthand_operations(options);
  73         }
  74
  75         return ok;
  76 }
  77
  78 /*
  79  * local routines
  80  */
  81
  82 void show_version()
  83 {
  84         printf("metaflac %s\n", FLAC__VERSION_STRING);
  85 }
  86
  87 FLAC__bool do_major_operation(const CommandLineOptions *options)
  88 {
  89         unsigned i;
  90         FLAC__bool ok = true;
  91
  92         /*@@@ to die after first error,  v---  add '&& ok' here */
  93         for(i = 0; i < options->num_files; i++)
  94                 ok &= do_major_operation_on_file(options->filenames[i], options);
  95
  96         return ok;
  97 }
  98
  99 FLAC__bool do_major_operation_on_file(const char *filename, const CommandLineOptions *options)
 100 {
 101         FLAC__bool ok = true, needs_write = false;
 102         FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
 103
 104         if(0 == chain)
 105                 die("out of memory allocating chain");
 106
 107         if(!FLAC__metadata_chain_read(chain, filename)) {
 108                 fprintf(stderr, "%s: ERROR: reading metadata, status = \"%s\"\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
 109                 return false;
 110         }
 111
 112         switch(options->ops.operations[0].type) {
 113                 case OP__LIST:
 114                         ok = do_major_operation__list(options->prefix_with_filename? filename : 0, chain, options);
 115                         break;
 116                 case OP__APPEND:
 117                         ok = do_major_operation__append(chain, options);
 118                         needs_write = true;
 119                         break;
 120                 case OP__REMOVE:
 121                         ok = do_major_operation__remove(chain, options);
 122                         needs_write = true;
 123                         break;
 124                 case OP__REMOVE_ALL:
 125                         ok = do_major_operation__remove_all(chain, options);
 126                         needs_write = true;
 127                         break;
 128                 case OP__MERGE_PADDING:
 129                         FLAC__metadata_chain_merge_padding(chain);
 130                         needs_write = true;
 131                         break;
 132                 case OP__SORT_PADDING:
 133                         FLAC__metadata_chain_sort_padding(chain);
 134                         needs_write = true;
 135                         break;
 136                 default:
 137                         FLAC__ASSERT(0);
 138                         return false;
 139         }
 140
 141         if(ok && needs_write) {
 142                 if(options->use_padding)
 143                         FLAC__metadata_chain_sort_padding(chain);
 144                 ok = FLAC__metadata_chain_write(chain, options->use_padding, options->preserve_modtime);
 145                 if(!ok)
 146                         fprintf(stderr, "%s: ERROR: writing FLAC file, error = %s\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
 147         }
 148
 149         FLAC__metadata_chain_delete(chain);
 150
 151         return ok;
 152 }
 153
 154 FLAC__bool do_major_operation__list(const char *filename, FLAC__Metadata_Chain *chain, const CommandLineOptions *options)
 155 {
 156         FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
 157         FLAC__StreamMetadata *block;
 158         FLAC__bool ok = true;
 159         unsigned block_number;
 160
 161         if(0 == iterator)
 162                 die("out of memory allocating iterator");
 163
 164         FLAC__metadata_iterator_init(iterator, chain);
 165
 166         block_number = 0;
 167         do {
 168                 block = FLAC__metadata_iterator_get_block(iterator);
 169                 ok &= (0 != block);
 170                 if(!ok)
 171                         fprintf(stderr, "%s: ERROR: couldn't get block from chain\n", filename);
 172                 else if(passes_filter(options, FLAC__metadata_iterator_get_block(iterator), block_number))
 173                         write_metadata(filename, block, block_number, !options->utf8_convert, options->application_data_format_is_hexdump);
 174                 block_number++;
 175         } while(ok && FLAC__metadata_iterator_next(iterator));
 176
 177         FLAC__metadata_iterator_delete(iterator);
 178
 179         return ok;
 180 }
 181
 182 FLAC__bool do_major_operation__append(FLAC__Metadata_Chain *chain, const CommandLineOptions *options)
 183 {
 184         (void) chain, (void) options;
 185         fprintf(stderr, "ERROR: --append not implemented yet\n"); /*@@@*/
 186         return false;
 187 }
 188
 189 FLAC__bool do_major_operation__remove(FLAC__Metadata_Chain *chain, const CommandLineOptions *options)
 190 {
 191         FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
 192         FLAC__bool ok = true;
 193         unsigned block_number;
 194
 195         if(0 == iterator)
 196                 die("out of memory allocating iterator");
 197
 198         FLAC__metadata_iterator_init(iterator, chain);
 199
 200         block_number = 0;
 201         while(ok && FLAC__metadata_iterator_next(iterator)) {
 202                 block_number++;
 203                 if(passes_filter(options, FLAC__metadata_iterator_get_block(iterator), block_number)) {
 204                         ok &= FLAC__metadata_iterator_delete_block(iterator, options->use_padding);
 205                         if(options->use_padding)
 206                                 ok &= FLAC__metadata_iterator_next(iterator);
 207                 }
 208         }
 209
 210         FLAC__metadata_iterator_delete(iterator);
 211
 212         return ok;
 213 }
 214
 215 FLAC__bool do_major_operation__remove_all(FLAC__Metadata_Chain *chain, const CommandLineOptions *options)
 216 {
 217         FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
 218         FLAC__bool ok = true;
 219
 220         if(0 == iterator)
 221                 die("out of memory allocating iterator");
 222
 223         FLAC__metadata_iterator_init(iterator, chain);
 224
 225         while(ok && FLAC__metadata_iterator_next(iterator)) {
 226                 ok &= FLAC__metadata_iterator_delete_block(iterator, options->use_padding);
 227                 if(options->use_padding)
 228                         ok &= FLAC__metadata_iterator_next(iterator);
 229         }
 230
 231         FLAC__metadata_iterator_delete(iterator);
 232
 233         return ok;
 234 }
 235
 236 FLAC__bool do_shorthand_operations(const CommandLineOptions *options)
 237 {
 238         unsigned i;
 239         FLAC__bool ok = true;
 240
 241         /* to die after first error,     v---  add '&& ok' here */
 242         for(i = 0; i < options->num_files; i++)
 243                 ok &= do_shorthand_operations_on_file(options->filenames[i], options);
 244
 245         /* check if OP__ADD_REPLAY_GAIN requested */
 246         if(ok && options->num_files > 0) {
 247                 for(i = 0; i < options->ops.num_operations; i++) {
 248                         if(options->ops.operations[i].type == OP__ADD_REPLAY_GAIN)
 249                                 ok = do_shorthand_operation__add_replay_gain(options->filenames, options->num_files, options->preserve_modtime);
 250                 }
 251         }
 252
 253         return ok;
 254 }
 255
 256 FLAC__bool do_shorthand_operations_on_file(const char *filename, const CommandLineOptions *options)
 257 {
 258         unsigned i;
 259         FLAC__bool ok = true, needs_write = false, use_padding = options->use_padding;
 260         FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
 261
 262         if(0 == chain)
 263                 die("out of memory allocating chain");
 264
 265         if(!FLAC__metadata_chain_read(chain, filename)) {
 266                 fprintf(stderr, "%s: ERROR: reading metadata, status = \"%s\"\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
 267                 return false;
 268         }
 269
 270         for(i = 0; i < options->ops.num_operations && ok; i++) {
 271                 ok &= do_shorthand_operation(filename, options->prefix_with_filename, chain, &options->ops.operations[i], &needs_write, options->utf8_convert);
 272
 273                 /* The following seems counterintuitive but the meaning
 274                  * of 'use_padding' is 'try to keep the overall metadata
 275                  * to its original size, adding or truncating extra
 276                  * padding if necessary' which is why we need to turn it
 277                  * off in this case.  If we don't, the extra padding block
 278                  * will just be truncated.
 279                  */
 280                 if(options->ops.operations[i].type == OP__ADD_PADDING)
 281                         use_padding = false;
 282         }
 283
 284         if(ok && needs_write) {
 285                 if(use_padding)
 286                         FLAC__metadata_chain_sort_padding(chain);
 287                 ok = FLAC__metadata_chain_write(chain, use_padding, options->preserve_modtime);
 288                 if(!ok)
 289                         fprintf(stderr, "%s: ERROR: writing FLAC file, error = %s\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
 290         }
 291
 292         FLAC__metadata_chain_delete(chain);
 293
 294         return ok;
 295 }
 296
 297 FLAC__bool do_shorthand_operation(const char *filename, FLAC__bool prefix_with_filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write, FLAC__bool utf8_convert)
 298 {
 299         FLAC__bool ok = true;
 300
 301         switch(operation->type) {
 302                 case OP__SHOW_MD5SUM:
 303                 case OP__SHOW_MIN_BLOCKSIZE:
 304                 case OP__SHOW_MAX_BLOCKSIZE:
 305                 case OP__SHOW_MIN_FRAMESIZE:
 306                 case OP__SHOW_MAX_FRAMESIZE:
 307                 case OP__SHOW_SAMPLE_RATE:
 308                 case OP__SHOW_CHANNELS:
 309                 case OP__SHOW_BPS:
 310                 case OP__SHOW_TOTAL_SAMPLES:
 311                 case OP__SET_MD5SUM:
 312                 case OP__SET_MIN_BLOCKSIZE:
 313                 case OP__SET_MAX_BLOCKSIZE:
 314                 case OP__SET_MIN_FRAMESIZE:
 315                 case OP__SET_MAX_FRAMESIZE:
 316                 case OP__SET_SAMPLE_RATE:
 317                 case OP__SET_CHANNELS:
 318                 case OP__SET_BPS:
 319                 case OP__SET_TOTAL_SAMPLES:
 320                         ok = do_shorthand_operation__streaminfo(filename, prefix_with_filename, chain, operation, needs_write);
 321                         break;
 322                 case OP__SHOW_VC_VENDOR:
 323                 case OP__SHOW_VC_FIELD:
 324                 case OP__REMOVE_VC_ALL:
 325                 case OP__REMOVE_VC_FIELD:
 326                 case OP__REMOVE_VC_FIRSTFIELD:
 327                 case OP__SET_VC_FIELD:
 328                 case OP__IMPORT_VC_FROM:
 329                 case OP__EXPORT_VC_TO:
 330                         ok = do_shorthand_operation__vorbis_comment(filename, prefix_with_filename, chain, operation, needs_write, !utf8_convert);
 331                         break;
 332                 case OP__ADD_SEEKPOINT:
 333                         ok = do_shorthand_operation__add_seekpoints(filename, chain, operation->argument.add_seekpoint.specification, needs_write);
 334                         break;
 335                 case OP__ADD_REPLAY_GAIN:
 336                         /* this command is always executed last */
 337                         ok = true;
 338                         break;
 339                 case OP__ADD_PADDING:
 340                         ok = do_shorthand_operation__add_padding(filename, chain, operation->argument.add_padding.length, needs_write);
 341                         break;
 342                 default:
 343                         ok = false;
 344                         FLAC__ASSERT(0);
 345                         break;
 346         };
 347
 348         return ok;
 349 }
 350
 351 FLAC__bool do_shorthand_operation__add_replay_gain(char **filenames, unsigned num_files, FLAC__bool preserve_modtime)
 352 {
 353         FLAC__StreamMetadata streaminfo;
 354         float *title_gains = 0, *title_peaks = 0;
 355         float album_gain, album_peak;
 356         unsigned sample_rate = 0;
 357         unsigned bits_per_sample = 0;
 358         unsigned channels = 0;
 359         unsigned i;
 360         const char *error;
 361         FLAC__bool first = true;
 362
 363         FLAC__ASSERT(num_files > 0);
 364
 365         for(i = 0; i < num_files; i++) {
 366                 FLAC__ASSERT(0 != filenames[i]);
 367                 if(!FLAC__metadata_get_streaminfo(filenames[i], &streaminfo)) {
 368                         fprintf(stderr, "%s: ERROR: can't open file or get STREAMINFO block\n", filenames[i]);
 369                         return false;
 370                 }
 371                 if(first) {
 372                         first = false;
 373                         sample_rate = streaminfo.data.stream_info.sample_rate;
 374                         bits_per_sample = streaminfo.data.stream_info.bits_per_sample;
 375                         channels = streaminfo.data.stream_info.channels;
 376                 }
 377                 else {
 378                         if(sample_rate != streaminfo.data.stream_info.sample_rate) {
 379                                 fprintf(stderr, "%s: ERROR: sample rate of %u Hz does not match previous files' %u Hz\n", filenames[i], streaminfo.data.stream_info.sample_rate, sample_rate);
 380                                 return false;
 381                         }
 382                         if(bits_per_sample != streaminfo.data.stream_info.bits_per_sample) {
 383                                 fprintf(stderr, "%s: ERROR: resolution of %u bps does not match previous files' %u bps\n", filenames[i], streaminfo.data.stream_info.bits_per_sample, bits_per_sample);
 384                                 return false;
 385                         }
 386                         if(channels != streaminfo.data.stream_info.channels) {
 387                                 fprintf(stderr, "%s: ERROR: # channels (%u) does not match previous files' (%u)\n", filenames[i], streaminfo.data.stream_info.channels, channels);
 388                                 return false;
 389                         }
 390                 }
 391                 if(!grabbag__replaygain_is_valid_sample_frequency(sample_rate)) {
 392                         fprintf(stderr, "%s: ERROR: sample rate of %u Hz is not supported\n", filenames[i], sample_rate);
 393                         return false;
 394                 }
 395                 if(channels != 1 && channels != 2) {
 396                         fprintf(stderr, "%s: ERROR: # of channels (%u) is not supported, must be 1 or 2\n", filenames[i], channels);
 397                         return false;
 398                 }
 399         }
 400         FLAC__ASSERT(bits_per_sample >= FLAC__MIN_BITS_PER_SAMPLE && bits_per_sample <= FLAC__MAX_BITS_PER_SAMPLE);
 401
 402         if(!grabbag__replaygain_init(sample_rate))
 403                 FLAC__ASSERT(0);
 404
 405         if(
 406                 0 == (title_gains = (float*)malloc(sizeof(float) * num_files)) ||
 407                 0 == (title_peaks = (float*)malloc(sizeof(float) * num_files))
 408         )
 409                 die("out of memory allocating space for title gains/peaks");
 410
 411         for(i = 0; i < num_files; i++) {
 412                 if(0 != (error = grabbag__replaygain_analyze_file(filenames[i], title_gains+i, title_peaks+i))) {
 413                         fprintf(stderr, "%s: ERROR: during analysis (%s)\n", filenames[i], error);
 414                         free(title_gains);
 415                         free(title_peaks);
 416                         return false;
 417                 }
 418         }
 419         grabbag__replaygain_get_album(&album_gain, &album_peak);
 420
 421         for(i = 0; i < num_files; i++) {
 422                 if(0 != (error = grabbag__replaygain_store_to_file(filenames[i], album_gain, album_peak, title_gains[i], title_peaks[i], preserve_modtime))) {
 423                         fprintf(stderr, "%s: ERROR: writing tags (%s)\n", filenames[i], error);
 424                         free(title_gains);
 425                         free(title_peaks);
 426                         return false;
 427                 }
 428         }
 429
 430         free(title_gains);
 431         free(title_peaks);
 432         return true;
 433 }
 434
 435 FLAC__bool do_shorthand_operation__add_padding(const char *filename, FLAC__Metadata_Chain *chain, unsigned length, FLAC__bool *needs_write)
 436 {
 437         FLAC__StreamMetadata *padding = 0;
 438         FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
 439
 440         if(0 == iterator)
 441                 die("out of memory allocating iterator");
 442
 443         FLAC__metadata_iterator_init(iterator, chain);
 444
 445         while(FLAC__metadata_iterator_next(iterator))
 446                 ;
 447
 448         padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING);
 449         if(0 == padding)
 450                 die("out of memory allocating PADDING block");
 451
 452         padding->length = length;
 453
 454         if(!FLAC__metadata_iterator_insert_block_after(iterator, padding)) {
 455                 fprintf(stderr, "%s: ERROR: adding new PADDING block to metadata, status =\"%s\"\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
 456                 FLAC__metadata_object_delete(padding);
 457                 FLAC__metadata_iterator_delete(iterator);
 458                 return false;
 459         }
 460
 461         FLAC__metadata_iterator_delete(iterator);
 462         *needs_write = true;
 463         return true;
 464 }
 465
 466 FLAC__bool passes_filter(const CommandLineOptions *options, const FLAC__StreamMetadata *block, unsigned block_number)
 467 {
 468         unsigned i, j;
 469         FLAC__bool matches_number = false, matches_type = false;
 470         FLAC__bool has_block_number_arg = false;
 471
 472         for(i = 0; i < options->args.num_arguments; i++) {
 473                 if(options->args.arguments[i].type == ARG__BLOCK_TYPE || options->args.arguments[i].type == ARG__EXCEPT_BLOCK_TYPE) {
 474                         for(j = 0; j < options->args.arguments[i].value.block_type.num_entries; j++) {
 475                                 if(options->args.arguments[i].value.block_type.entries[j].type == block->type) {
 476                                         if(block->type != FLAC__METADATA_TYPE_APPLICATION || !options->args.arguments[i].value.block_type.entries[j].filter_application_by_id || 0 == memcmp(options->args.arguments[i].value.block_type.entries[j].application_id, block->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8))
 477                                                 matches_type = true;
 478                                 }
 479                         }
 480                 }
 481                 else if(options->args.arguments[i].type == ARG__BLOCK_NUMBER) {
 482                         has_block_number_arg = true;
 483                         for(j = 0; j < options->args.arguments[i].value.block_number.num_entries; j++) {
 484                                 if(options->args.arguments[i].value.block_number.entries[j] == block_number)
 485                                         matches_number = true;
 486                         }
 487                 }
 488         }
 489
 490         if(!has_block_number_arg)
 491                 matches_number = true;
 492
 493         if(options->args.checks.has_block_type) {
 494                 FLAC__ASSERT(!options->args.checks.has_except_block_type);
 495         }
 496         else if(options->args.checks.has_except_block_type)
 497                 matches_type = !matches_type;
 498         else
 499                 matches_type = true;
 500
 501         return matches_number && matches_type;
 502 }
 503
 504 void write_metadata(const char *filename, FLAC__StreamMetadata *block, unsigned block_number, FLAC__bool raw, FLAC__bool hexdump_application)
 505 {
 506         unsigned i;
 507
 508 /*@@@ yuck, should do this with a varargs function or something: */
 509 #define PPR if(filename)printf("%s:",filename);
 510         PPR; printf("METADATA block #%u\n", block_number);
 511         PPR; printf("  type: %u (%s)\n", (unsigned)block->type, block->type < FLAC__METADATA_TYPE_UNDEFINED? FLAC__MetadataTypeString[block->type] : "UNKNOWN");
 512         PPR; printf("  is last: %s\n", block->is_last? "true":"false");
 513         PPR; printf("  length: %u\n", block->length);
 514
 515         switch(block->type) {
 516                 case FLAC__METADATA_TYPE_STREAMINFO:
 517                         PPR; printf("  minumum blocksize: %u samples\n", block->data.stream_info.min_blocksize);
 518                         PPR; printf("  maximum blocksize: %u samples\n", block->data.stream_info.max_blocksize);
 519                         PPR; printf("  minimum framesize: %u bytes\n", block->data.stream_info.min_framesize);
 520                         PPR; printf("  maximum framesize: %u bytes\n", block->data.stream_info.max_framesize);
 521                         PPR; printf("  sample_rate: %u Hz\n", block->data.stream_info.sample_rate);
 522                         PPR; printf("  channels: %u\n", block->data.stream_info.channels);
 523                         PPR; printf("  bits-per-sample: %u\n", block->data.stream_info.bits_per_sample);
 524                         PPR; printf("  total samples: %llu\n", block->data.stream_info.total_samples);
 525                         PPR; printf("  MD5 signature: ");
 526                         for(i = 0; i < 16; i++) {
 527                                 printf("%02x", (unsigned)block->data.stream_info.md5sum[i]);
 528                         }
 529                         printf("\n");
 530                         break;
 531                 case FLAC__METADATA_TYPE_PADDING:
 532                         /* nothing to print */
 533                         break;
 534                 case FLAC__METADATA_TYPE_APPLICATION:
 535                         PPR; printf("  application ID: ");
 536                         for(i = 0; i < 4; i++) {
 537                                 PPR; printf("%02x", block->data.application.id[i]);
 538                         }
 539                         PPR; printf("\n");
 540                         PPR; printf("  data contents:\n");
 541                         if(0 != block->data.application.data) {
 542                                 if(hexdump_application)
 543                                         hexdump(filename, block->data.application.data, block->length - FLAC__STREAM_METADATA_HEADER_LENGTH, "    ");
 544                                 else
 545                                         (void) fwrite(block->data.application.data, 1, block->length - FLAC__STREAM_METADATA_HEADER_LENGTH, stdout);
 546                         }
 547                         break;
 548                 case FLAC__METADATA_TYPE_SEEKTABLE:
 549                         PPR; printf("  seek points: %u\n", block->data.seek_table.num_points);
 550                         for(i = 0; i < block->data.seek_table.num_points; i++) {
 551                                 if(block->data.seek_table.points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER) {
 552                                         PPR; printf("    point %d: sample_number=%llu, stream_offset=%llu, frame_samples=%u\n", i, block->data.seek_table.points[i].sample_number, block->data.seek_table.points[i].stream_offset, block->data.seek_table.points[i].frame_samples);
 553                                 }
 554                                 else {
 555                                         PPR; printf("    point %d: PLACEHOLDER\n", i);
 556                                 }
 557                         }
 558                         break;
 559                 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
 560                         PPR; printf("  vendor string: ");
 561                         write_vc_field(0, &block->data.vorbis_comment.vendor_string, raw, stdout);
 562                         PPR; printf("  comments: %u\n", block->data.vorbis_comment.num_comments);
 563                         for(i = 0; i < block->data.vorbis_comment.num_comments; i++) {
 564                                 PPR; printf("    comment[%u]: ", i);
 565                                 write_vc_field(0, &block->data.vorbis_comment.comments[i], raw, stdout);
 566                         }
 567                         break;
 568                 default:
 569                         PPR; printf("SKIPPING block of unknown type\n");
 570                         break;
 571         }
 572 #undef PPR
 573 }