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 #include <cstdio>
  21 #include <cstdlib>
  22 #include <string>
  23 #include <climits>
  24 #include <cerrno>
  25 #include <unistd.h>
  26 #include <sys/stat.h>
  27 #include <time.h>
  28
  29 #include <sndfile.h>
  30 #include <samplerate.h>
  31
  32 #include <glibmm.h>
  33
  34 #include <boost/scoped_array.hpp>
  35 #include <boost/shared_array.hpp>
  36
  37 #include <pbd/convert.h>
  38
  39 #include <ardour/ardour.h>
  40 #include <ardour/session.h>
  41 #include <ardour/session_directory.h>
  42 #include <ardour/audio_diskstream.h>
  43 #include <ardour/sndfilesource.h>
  44 #include <ardour/sndfile_helpers.h>
  45 #include <ardour/audioregion.h>
  46 #include <ardour/region_factory.h>
  47 #include <ardour/source_factory.h>
  48 #include <ardour/resampled_source.h>
  49
  50 #include "i18n.h"
  51
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54
  55 std::auto_ptr<ImportableSource>
  56 open_importable_source (const string& path, nframes_t samplerate,
  57                 ARDOUR::SrcQuality quality)
  58 {
  59         std::auto_ptr<ImportableSource> source(new ImportableSource(path));
  60
  61         if (source->samplerate() == samplerate) {
  62                 return source;
  63         }
  64
  65         return std::auto_ptr<ImportableSource>(
  66                         new ResampledImportableSource(path, samplerate, quality)
  67                         );
  68 }
  69
  70 std::string
  71 get_non_existent_filename (const std::string& basename, uint channel, uint channels)
  72 {
  73         char buf[PATH_MAX+1];
  74         bool goodfile = false;
  75         string base(basename);
  76
  77         do {
  78                 if (channels == 2) {
  79                         if (channel == 0) {
  80                                 snprintf (buf, sizeof(buf), "%s-L.wav", base.c_str());
  81                         } else {
  82                                 snprintf (buf, sizeof(buf), "%s-R.wav", base.c_str());
  83                         }
  84                 } else if (channels > 1) {
  85                         snprintf (buf, sizeof(buf), "%s-c%d.wav", base.c_str(), channel+1);
  86                 } else {
  87                         snprintf (buf, sizeof(buf), "%s.wav", base.c_str());
  88                 }
  89
  90                 if (sys::exists (buf)) {
  91
  92                         /* if the file already exists, we must come up with
  93                          *  a new name for it.  for now we just keep appending
  94                          *  _ to basename
  95                          */
  96
  97                         base += "_";
  98
  99                 } else {
 100
 101                         goodfile = true;
 102                 }
 103
 104         } while ( !goodfile);
 105
 106         return buf;
 107 }
 108
 109 vector<string>
 110 get_paths_for_new_sources (const string& import_file_path, const string& session_dir,
 111                 uint channels)
 112 {
 113         vector<string> new_paths;
 114         const string basename = sys::basename (import_file_path);
 115         SessionDirectory sdir(session_dir);
 116
 117         for (uint n = 0; n < channels; ++n) {
 118
 119                 std::string filename = get_non_existent_filename (basename, n, channels);
 120
 121                 sys::path filepath = sdir.sound_path() / filename;
 122
 123                 new_paths.push_back (filepath.to_string());
 124         }
 125
 126         return new_paths;
 127 }
 128
 129 bool
 130 create_mono_sources_for_writing (const vector<string>& new_paths, Session& sess,
 131                 uint samplerate, vector<boost::shared_ptr<AudioFileSource> >& newfiles)
 132 {
 133         for (vector<string>::const_iterator i = new_paths.begin();
 134                         i != new_paths.end(); ++i)
 135         {
 136                 boost::shared_ptr<Source> source;
 137
 138                 try
 139                 {
 140                         source = SourceFactory::createWritable (
 141                                         DataType::AUDIO,
 142                                         sess,
 143                                         i->c_str(),
 144                                         false, // destructive
 145                                         samplerate
 146                                         );
 147                 }
 148                 catch (const failed_constructor& err)
 149                 {
 150                         error << string_compose (_("Unable to create file %1 during import"), *i) << endmsg;
 151                         return false;
 152                 }
 153
 154                 newfiles.push_back(boost::dynamic_pointer_cast<AudioFileSource>(source));
 155         }
 156         return true;
 157 }
 158
 159 Glib::ustring
 160 compose_status_message (const string& path,
 161                 uint file_samplerate,
 162                 uint session_samplerate,
 163                 uint current_file,
 164                 uint total_files)
 165 {
 166         if (file_samplerate != session_samplerate) {
 167                 return string_compose (_("converting %1\n(resample from %2KHz to %3KHz)\n(%4 of %5)"),
 168                                 sys::path(path).leaf(),
 169                                 file_samplerate/1000.0f,
 170                                 session_samplerate/1000.0f,
 171                                 current_file, total_files);
 172         }
 173
 174         return  string_compose (_("converting %1\n(%2 of %3)"),
 175                         sys::path(path).leaf(),
 176                         current_file, total_files);
 177 }
 178
 179 void
 180 write_audio_data_to_new_files (ImportableSource* source, Session::import_status& status,
 181                 vector<boost::shared_ptr<AudioFileSource> >& newfiles)
 182 {
 183         const nframes_t nframes = ResampledImportableSource::blocksize;
 184         uint channels = source->channels();
 185
 186         boost::scoped_array<float> data(new float[nframes * channels]);
 187         vector<boost::shared_array<Sample> > channel_data;
 188
 189         for (uint n = 0; n < channels; ++n) {
 190                 channel_data.push_back(boost::shared_array<Sample>(new Sample[nframes]));
 191         }
 192
 193         uint read_count = 0;
 194         status.progress = 0.0f;
 195
 196         while (!status.cancel) {
 197
 198                 nframes_t nread, nfread;
 199                 uint x;
 200                 uint chn;
 201
 202                 if ((nread = source->read (data.get(), nframes)) == 0) {
 203                         break;
 204                 }
 205                 nfread = nread / channels;
 206
 207                 /* de-interleave */
 208
 209                 for (chn = 0; chn < channels; ++chn) {
 210
 211                         nframes_t n;
 212                         for (x = chn, n = 0; n < nfread; x += channels, ++n) {
 213                                 channel_data[chn][n] = (Sample) data[x];
 214                         }
 215                 }
 216
 217                 /* flush to disk */
 218
 219                 for (chn = 0; chn < channels; ++chn) {
 220                         newfiles[chn]->write (channel_data[chn].get(), nfread);
 221                 }
 222
 223                 read_count += nread;
 224                 status.progress = read_count / (source->ratio () * source->length() * channels);
 225         }
 226 }
 227
 228 void
 229 remove_file_source (boost::shared_ptr<AudioFileSource> file_source)
 230 {
 231         sys::remove (std::string(file_source->path()));
 232 }
 233
 234 int
 235 Session::import_audiofile (import_status& status)
 236 {
 237         uint32_t cnt = 1;
 238         typedef vector<boost::shared_ptr<AudioFileSource> > AudioSources;
 239         AudioSources all_new_sources;
 240
 241         status.sources.clear ();
 242
 243         for (vector<Glib::ustring>::iterator p = status.paths.begin();
 244                         p != status.paths.end() && !status.cancel;
 245                         ++p, ++cnt)
 246         {
 247                 std::auto_ptr<ImportableSource> source;
 248
 249                 try
 250                 {
 251                         source = open_importable_source (*p, frame_rate(), status.quality);
 252                 }
 253                 catch (const failed_constructor& err)
 254                 {
 255                         error << string_compose(_("Import: cannot open input sound file \"%1\""), (*p)) << endmsg;
 256                         status.done = status.cancel = true;
 257                         return -1;
 258                 }
 259
 260                 vector<string> new_paths = get_paths_for_new_sources (*p,
 261                                 get_best_session_directory_for_new_source (),
 262                                 source->channels());
 263
 264                 AudioSources newfiles;
 265
 266                 status.cancel = !create_mono_sources_for_writing (new_paths, *this, frame_rate(), newfiles);
 267
 268                 // copy on cancel/failure so that any files that were created will be removed below
 269                 std::copy (newfiles.begin(), newfiles.end(), std::back_inserter(all_new_sources));
 270
 271                 if (status.cancel) break;
 272
 273                 for (AudioSources::iterator i = newfiles.begin(); i != newfiles.end(); ++i) {
 274                         (*i)->prepare_for_peakfile_writes ();
 275                 }
 276
 277                 status.doing_what = compose_status_message (*p, source->samplerate(),
 278                                 frame_rate(), cnt, status.paths.size());
 279
 280                 write_audio_data_to_new_files (source.get(), status, newfiles);
 281         }
 282
 283         int ret = -1;
 284
 285         if (!status.cancel) {
 286                 struct tm* now;
 287                 time_t xnow;
 288                 time (&xnow);
 289                 now = localtime (&xnow);
 290                 status.freeze = true;
 291
 292                 /* flush the final length(s) to the header(s) */
 293
 294                 for (AudioSources::iterator x = all_new_sources.begin();
 295                                 x != all_new_sources.end(); ++x)
 296                 {
 297                         (*x)->update_header(0, *now, xnow);
 298                         (*x)->done_with_peakfile_writes ();
 299                 }
 300
 301                 /* save state so that we don't lose these new Sources */
 302
 303                 save_state (_name);
 304
 305                 std::copy (all_new_sources.begin(), all_new_sources.end(),
 306                                 std::back_inserter(status.sources));
 307
 308                 ret = 0;
 309         } else {
 310                 // this can throw...but it seems very unlikely
 311                 std::for_each (all_new_sources.begin(), all_new_sources.end(), remove_file_source);
 312         }
 313
 314         status.done = true;
 315
 316         return ret;
 317 }