libs/ardour/import.cc

   1 /*
   2     Copyright (C) 2000 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (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., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20
  21 #ifdef WAF_BUILD
  22 #include "libardour-config.h"
  23 #endif
  24
  25 #include <cstdio>
  26 #include <cstdlib>
  27 #include <string>
  28 #include <climits>
  29 #include <cerrno>
  30 #include <unistd.h>
  31 #include <sys/stat.h>
  32 #include <time.h>
  33 #include <stdint.h>
  34
  35 #include <sndfile.h>
  36 #include <samplerate.h>
  37
  38 #include <glibmm.h>
  39
  40 #include <boost/scoped_array.hpp>
  41 #include <boost/shared_array.hpp>
  42
  43 #include "pbd/basename.h"
  44 #include "pbd/convert.h"
  45
  46 #include "evoral/SMF.hpp"
  47
  48 #include "ardour/analyser.h"
  49 #include "ardour/ardour.h"
  50 #include "ardour/audio_diskstream.h"
  51 #include "ardour/audioengine.h"
  52 #include "ardour/audioregion.h"
  53 #include "ardour/import_status.h"
  54 #include "ardour/region_factory.h"
  55 #include "ardour/resampled_source.h"
  56 #include "ardour/session.h"
  57 #include "ardour/session_directory.h"
  58 #include "ardour/smf_source.h"
  59 #include "ardour/sndfile_helpers.h"
  60 #include "ardour/sndfileimportable.h"
  61 #include "ardour/sndfilesource.h"
  62 #include "ardour/source_factory.h"
  63 #include "ardour/tempo.h"
  64
  65 #ifdef HAVE_COREAUDIO
  66 #include "ardour/caimportable.h"
  67 #endif
  68
  69 #include "i18n.h"
  70
  71 using namespace std;
  72 using namespace ARDOUR;
  73 using namespace PBD;
  74
  75 static boost::shared_ptr<ImportableSource>
  76 open_importable_source (const string& path, nframes_t samplerate, ARDOUR::SrcQuality quality)
  77 {
  78         /* try libsndfile first, because it can get BWF info from .wav, which ExtAudioFile cannot.
  79            We don't necessarily need that information in an ImportableSource, but it keeps the
  80            logic the same as in SourceFactory::create()
  81          */
  82
  83         try {
  84                 boost::shared_ptr<SndFileImportableSource> source(new SndFileImportableSource(path));
  85
  86                 if (source->samplerate() == samplerate) {
  87                         return source;
  88                 }
  89
  90                 /* rewrap as a resampled source */
  91
  92                 return boost::shared_ptr<ImportableSource>(new ResampledImportableSource(source, samplerate, quality));
  93         }
  94
  95         catch (...) {
  96
  97 #ifdef HAVE_COREAUDIO
  98
  99                 /* libsndfile failed, see if we can use CoreAudio to handle the IO */
 100
 101                 CAImportableSource* src = new CAImportableSource(path);
 102                 boost::shared_ptr<CAImportableSource> source (src);
 103
 104                 if (source->samplerate() == samplerate) {
 105                         return source;
 106                 }
 107
 108                 /* rewrap as a resampled source */
 109
 110                 return boost::shared_ptr<ImportableSource>(new ResampledImportableSource(source, samplerate, quality));
 111
 112 #else
 113                 throw; // rethrow
 114 #endif
 115
 116         }
 117 }
 118
 119 static std::string
 120 get_non_existent_filename (DataType type, const bool allow_replacing, const std::string& destdir, const std::string& basename, uint channel, uint channels)
 121 {
 122         char buf[PATH_MAX+1];
 123         bool goodfile = false;
 124         string base(basename);
 125         const char* ext = (type == DataType::AUDIO) ? "wav" : "mid";
 126
 127         do {
 128
 129                 if (type == DataType::AUDIO && channels == 2) {
 130                         if (channel == 0) {
 131                                 snprintf (buf, sizeof(buf), "%s-L.wav", base.c_str());
 132                         } else {
 133                                 snprintf (buf, sizeof(buf), "%s-R.wav", base.c_str());
 134                         }
 135                 } else if (channels > 1) {
 136                         snprintf (buf, sizeof(buf), "%s-c%d.%s", base.c_str(), channel, ext);
 137                 } else {
 138                         snprintf (buf, sizeof(buf), "%s.%s", base.c_str(), ext);
 139                 }
 140
 141
 142                 string tempname = destdir + "/" + buf;
 143                 if (!allow_replacing && Glib::file_test (tempname, Glib::FILE_TEST_EXISTS)) {
 144
 145                         /* if the file already exists, we must come up with
 146                          *  a new name for it.  for now we just keep appending
 147                          *  _ to basename
 148                          */
 149
 150                         base += "_";
 151
 152                 } else {
 153
 154                         goodfile = true;
 155                 }
 156
 157         } while ( !goodfile);
 158
 159         return buf;
 160 }
 161
 162 static vector<string>
 163 get_paths_for_new_sources (const bool allow_replacing, const string& import_file_path, const string& session_dir, uint channels)
 164 {
 165         vector<string> new_paths;
 166         const string basename = basename_nosuffix (import_file_path);
 167
 168         SessionDirectory sdir(session_dir);
 169
 170         for (uint n = 0; n < channels; ++n) {
 171
 172                 const DataType type = SMFSource::safe_midi_file_extension (import_file_path) ? DataType::MIDI : DataType::AUDIO;
 173
 174                 std::string filepath = (type == DataType::MIDI)
 175                                 ? sdir.midi_path().to_string() : sdir.sound_path().to_string();
 176
 177                 filepath += '/';
 178                 filepath += get_non_existent_filename (type, allow_replacing, filepath, basename, n, channels);
 179                 new_paths.push_back (filepath);
 180         }
 181
 182         return new_paths;
 183 }
 184
 185 static bool
 186 map_existing_mono_sources (const vector<string>& new_paths, Session& /*sess*/,
 187                            uint /*samplerate*/, vector<boost::shared_ptr<Source> >& newfiles, Session *session)
 188 {
 189         for (vector<string>::const_iterator i = new_paths.begin();
 190                         i != new_paths.end(); ++i)
 191         {
 192                 boost::shared_ptr<Source> source = session->source_by_path_and_channel(*i, 0);
 193
 194                 if (source == 0) {
 195                         error << string_compose(_("Could not find a source for %1 even though we are updating this file!"), (*i)) << endl;
 196                         return false;
 197                 }
 198
 199                 newfiles.push_back(boost::dynamic_pointer_cast<Source>(source));
 200         }
 201         return true;
 202 }
 203
 204 static bool
 205 create_mono_sources_for_writing (const vector<string>& new_paths, Session& sess,
 206                                  uint samplerate, vector<boost::shared_ptr<Source> >& newfiles,
 207                                  framepos_t timeline_position)
 208 {
 209         for (vector<string>::const_iterator i = new_paths.begin(); i != new_paths.end(); ++i)
 210         {
 211                 boost::shared_ptr<Source> source;
 212
 213                 try
 214                 {
 215                         const DataType type = SMFSource::safe_midi_file_extension (*i) ? DataType::MIDI : DataType::AUDIO;
 216
 217
 218                         source = SourceFactory::createWritable (type, sess,
 219                                         i->c_str(),
 220                                         false, // destructive
 221                                         samplerate);
 222                 }
 223                 catch (const failed_constructor& err)
 224                 {
 225                         error << string_compose (_("Unable to create file %1 during import"), *i) << endmsg;
 226                         return false;
 227                 }
 228
 229                 newfiles.push_back(boost::dynamic_pointer_cast<Source>(source));
 230
 231                 /* for audio files, reset the timeline position so that any BWF-ish
 232                    information in the original files we are importing from is maintained.
 233                 */
 234
 235                 boost::shared_ptr<AudioFileSource> afs;
 236                 if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(source)) != 0) {
 237                         afs->set_timeline_position(timeline_position);
 238                 }
 239         }
 240         return true;
 241 }
 242
 243 static Glib::ustring
 244 compose_status_message (const string& path,
 245                         uint file_samplerate,
 246                         uint session_samplerate,
 247                         uint current_file,
 248                         uint total_files)
 249 {
 250         if (file_samplerate != session_samplerate) {
 251                 return string_compose (_("Resampling %1 from %2kHz to %3kHz"),
 252                                        Glib::path_get_basename (path),
 253                                        file_samplerate/1000.0f,
 254                                        session_samplerate/1000.0f);
 255         }
 256
 257         return string_compose (_("Copying %1"), Glib::path_get_basename (path));
 258 }
 259
 260 static void
 261 write_audio_data_to_new_files (ImportableSource* source, ImportStatus& status,
 262                                vector<boost::shared_ptr<Source> >& newfiles)
 263 {
 264         const nframes_t nframes = ResampledImportableSource::blocksize;
 265         boost::shared_ptr<AudioFileSource> afs;
 266         uint channels = source->channels();
 267
 268         boost::scoped_array<float> data(new float[nframes * channels]);
 269         vector<boost::shared_array<Sample> > channel_data;
 270
 271         for (uint n = 0; n < channels; ++n) {
 272                 channel_data.push_back(boost::shared_array<Sample>(new Sample[nframes]));
 273         }
 274
 275         float gain = 1;
 276
 277         boost::shared_ptr<AudioSource> s = boost::dynamic_pointer_cast<AudioSource> (newfiles[0]);
 278         assert (s);
 279
 280         status.progress = 0.0f;
 281         float progress_multiplier = 1;
 282         float progress_base = 0;
 283
 284         if (!source->clamped_at_unity() && s->clamped_at_unity()) {
 285
 286                 /* The source we are importing from can return sample values with a magnitude greater than 1,
 287                    and the file we are writing the imported data to cannot handle such values.  Compute the gain
 288                    factor required to normalize the input sources to have a magnitude of less than 1.
 289                 */
 290
 291                 float peak = 0;
 292                 uint read_count = 0;
 293
 294                 while (!status.cancel) {
 295                         nframes_t const nread = source->read (data.get(), nframes);
 296                         if (nread == 0) {
 297                                 break;
 298                         }
 299
 300                         peak = compute_peak (data.get(), nread, peak);
 301
 302                         read_count += nread;
 303                         status.progress = 0.5 * read_count / (source->ratio() * source->length() * channels);
 304                 }
 305
 306                 if (peak >= 1) {
 307                         /* we are out of range: compute a gain to fix it */
 308                         gain = (1 - FLT_EPSILON) / peak;
 309                 }
 310
 311                 source->seek (0);
 312                 progress_multiplier = 0.5;
 313                 progress_base = 0.5;
 314         }
 315
 316         uint read_count = 0;
 317
 318         while (!status.cancel) {
 319
 320                 nframes_t nread, nfread;
 321                 uint x;
 322                 uint chn;
 323
 324                 if ((nread = source->read (data.get(), nframes)) == 0) {
 325                         break;
 326                 }
 327
 328                 if (gain != 1) {
 329                         /* here is the gain fix for out-of-range sample values that we computed earlier */
 330                         apply_gain_to_buffer (data.get(), nread, gain);
 331                 }
 332
 333                 nfread = nread / channels;
 334
 335                 /* de-interleave */
 336
 337                 for (chn = 0; chn < channels; ++chn) {
 338
 339                         nframes_t n;
 340                         for (x = chn, n = 0; n < nfread; x += channels, ++n) {
 341                                 channel_data[chn][n] = (Sample) data[x];
 342                         }
 343                 }
 344
 345                 /* flush to disk */
 346
 347                 for (chn = 0; chn < channels; ++chn) {
 348                         if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(newfiles[chn])) != 0) {
 349                                 afs->write (channel_data[chn].get(), nfread);
 350                         }
 351                 }
 352
 353                 read_count += nread;
 354                 status.progress = progress_base + progress_multiplier * read_count / (source->ratio () * source->length() * channels);
 355         }
 356 }
 357
 358 static void
 359 write_midi_data_to_new_files (Evoral::SMF* source, ImportStatus& status,
 360                               vector<boost::shared_ptr<Source> >& newfiles)
 361 {
 362         uint32_t buf_size = 4;
 363         uint8_t* buf      = (uint8_t*)malloc(buf_size);
 364
 365         status.progress = 0.0f;
 366
 367         try {
 368
 369         for (unsigned i = 1; i <= source->num_tracks(); ++i) {
 370                 boost::shared_ptr<SMFSource> smfs = boost::dynamic_pointer_cast<SMFSource>(newfiles[i-1]);
 371                 smfs->drop_model();
 372
 373                 source->seek_to_track(i);
 374
 375                 uint64_t t       = 0;
 376                 uint32_t delta_t = 0;
 377                 uint32_t size    = 0;
 378                 bool first = true;
 379
 380                 while (!status.cancel) {
 381                         gint ignored; // imported files either don't have NoteID's or
 382                                       // we ignore them.
 383
 384                         size = buf_size;
 385
 386                         int ret = source->read_event(&delta_t, &size, &buf, &ignored);
 387                         if (size > buf_size)
 388                                 buf_size = size;
 389
 390                         if (ret < 0) { // EOT
 391                                 break;
 392                         }
 393
 394                         t += delta_t;
 395
 396                         if (ret == 0) { // Meta
 397                                 continue;
 398                         }
 399
 400                         if (first) {
 401                                 smfs->mark_streaming_write_started ();
 402                                 first = false;
 403                         }
 404
 405                         smfs->append_event_unlocked_beats(Evoral::Event<double>(0,
 406                                         (double)t / (double)source->ppqn(),
 407                                         size,
 408                                         buf));
 409
 410                         if (status.progress < 0.99)
 411                                 status.progress += 0.01;
 412                 }
 413
 414                 const nframes64_t pos = 0;
 415                 const double length_beats = ceil(t / (double)source->ppqn());
 416                 BeatsFramesConverter converter(smfs->session().tempo_map(), pos);
 417                 smfs->update_length(pos, converter.to(length_beats));
 418                 smfs->mark_streaming_write_completed ();
 419
 420                 if (status.cancel) {
 421                         break;
 422                 }
 423         }
 424
 425         } catch (...) {
 426                 error << "Corrupt MIDI file " << source->file_path() << endl;
 427         }
 428 }
 429
 430 static void
 431 remove_file_source (boost::shared_ptr<Source> source)
 432 {
 433         ::unlink (source->path().c_str());
 434 }
 435
 436 // This function is still unable to cleanly update an existing source, even though
 437 // it is possible to set the ImportStatus flag accordingly. The functinality
 438 // is disabled at the GUI until the Source implementations are able to provide
 439 // the necessary API.
 440 void
 441 Session::import_audiofiles (ImportStatus& status)
 442 {
 443         typedef vector<boost::shared_ptr<Source> > Sources;
 444         Sources all_new_sources;
 445         boost::shared_ptr<AudioFileSource> afs;
 446         boost::shared_ptr<SMFSource> smfs;
 447         uint channels = 0;
 448
 449         status.sources.clear ();
 450
 451         for (vector<Glib::ustring>::iterator p = status.paths.begin();
 452              p != status.paths.end() && !status.cancel;
 453              ++p)
 454         {
 455                 boost::shared_ptr<ImportableSource> source;
 456                 std::auto_ptr<Evoral::SMF>          smf_reader;
 457                 const DataType type = SMFSource::safe_midi_file_extension (*p) ? DataType::MIDI : DataType::AUDIO;
 458
 459                 if (type == DataType::AUDIO) {
 460                         try {
 461                                 source = open_importable_source (*p, frame_rate(), status.quality);
 462                                 channels = source->channels();
 463                         } catch (const failed_constructor& err) {
 464                                 error << string_compose(_("Import: cannot open input sound file \"%1\""), (*p)) << endmsg;
 465                                 status.done = status.cancel = true;
 466                                 return;
 467                         }
 468
 469                 } else {
 470                         try {
 471                                 smf_reader = std::auto_ptr<Evoral::SMF>(new Evoral::SMF());
 472                                 smf_reader->open(*p);
 473                                 channels = smf_reader->num_tracks();
 474                         } catch (...) {
 475                                 error << _("Import: error opening MIDI file") << endmsg;
 476                                 status.done = status.cancel = true;
 477                                 return;
 478                         }
 479                 }
 480
 481                 vector<string> new_paths = get_paths_for_new_sources (status.replace_existing_source, *p,
 482                                                                       get_best_session_directory_for_new_source (),
 483                                                                       channels);
 484                 Sources newfiles;
 485                 framepos_t natural_position = source ? source->natural_position() : 0;
 486
 487                 if (status.replace_existing_source) {
 488                         fatal << "THIS IS NOT IMPLEMENTED YET, IT SHOULD NEVER GET CALLED!!! DYING!" << endmsg;
 489                         status.cancel = !map_existing_mono_sources (new_paths, *this, frame_rate(), newfiles, this);
 490                 } else {
 491                         status.cancel = !create_mono_sources_for_writing (new_paths, *this, frame_rate(), newfiles, natural_position);
 492                 }
 493
 494                 // copy on cancel/failure so that any files that were created will be removed below
 495                 std::copy (newfiles.begin(), newfiles.end(), std::back_inserter(all_new_sources));
 496
 497                 if (status.cancel) {
 498                         break;
 499                 }
 500
 501                 for (Sources::iterator i = newfiles.begin(); i != newfiles.end(); ++i) {
 502                         if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(*i)) != 0) {
 503                                 afs->prepare_for_peakfile_writes ();
 504                         }
 505                 }
 506
 507                 if (source) { // audio
 508                         status.doing_what = compose_status_message (*p, source->samplerate(),
 509                                                                     frame_rate(), status.current, status.total);
 510                         write_audio_data_to_new_files (source.get(), status, newfiles);
 511                 } else if (smf_reader.get()) { // midi
 512                         status.doing_what = string_compose(_("Loading MIDI file %1"), *p);
 513                         write_midi_data_to_new_files (smf_reader.get(), status, newfiles);
 514                 }
 515
 516                 ++status.current;
 517                 status.progress = 0;
 518         }
 519
 520         if (!status.cancel) {
 521                 struct tm* now;
 522                 time_t xnow;
 523                 time (&xnow);
 524                 now = localtime (&xnow);
 525                 status.freeze = true;
 526
 527                 /* flush the final length(s) to the header(s) */
 528
 529                 for (Sources::iterator x = all_new_sources.begin(); x != all_new_sources.end(); ) {
 530                         if ((afs = boost::dynamic_pointer_cast<AudioFileSource>(*x)) != 0) {
 531                                 afs->update_header((*x)->natural_position(), *now, xnow);
 532                                 afs->done_with_peakfile_writes ();
 533
 534                                 /* now that there is data there, requeue the file for analysis */
 535
 536                                 if (Config->get_auto_analyse_audio()) {
 537                                         Analyser::queue_source_for_analysis (boost::static_pointer_cast<Source>(*x), false);
 538                                 }
 539                         }
 540
 541                         /* don't create tracks for empty MIDI sources (channels) */
 542
 543                         if ((smfs = boost::dynamic_pointer_cast<SMFSource>(*x)) != 0 && smfs->is_empty()) {
 544                                 x = all_new_sources.erase(x);
 545                         } else {
 546                                 ++x;
 547                         }
 548                 }
 549
 550                 /* save state so that we don't lose these new Sources */
 551
 552                 save_state (_name);
 553
 554                 std::copy (all_new_sources.begin(), all_new_sources.end(), std::back_inserter(status.sources));
 555         } else {
 556                 // this can throw...but it seems very unlikely
 557                 std::for_each (all_new_sources.begin(), all_new_sources.end(), remove_file_source);
 558         }
 559
 560         status.done = true;
 561 }
 562