libs/ardour/source_factory.cc

   1 /*
   2     Copyright (C) 2000-2006 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     $Id$
  19 */
  20
  21 #include <pbd/error.h>
  22 #include <pbd/convert.h>
  23 #include <pbd/pthread_utils.h>
  24 #include <pbd/stacktrace.h>
  25
  26 #include <ardour/source_factory.h>
  27 #include <ardour/sndfilesource.h>
  28 #include <ardour/silentfilesource.h>
  29 #include <ardour/configuration.h>
  30 #include <ardour/smf_source.h>
  31
  32 #ifdef  HAVE_COREAUDIO
  33 #define USE_COREAUDIO_FOR_FILES
  34 #endif
  35
  36 #ifdef USE_COREAUDIO_FOR_FILES
  37 #include <ardour/coreaudiosource.h>
  38 #endif
  39
  40
  41 #include "i18n.h"
  42
  43 using namespace ARDOUR;
  44 using namespace std;
  45 using namespace PBD;
  46
  47 sigc::signal<void,boost::shared_ptr<Source> > SourceFactory::SourceCreated;
  48 Glib::Cond* SourceFactory::PeaksToBuild;
  49 Glib::StaticMutex SourceFactory::peak_building_lock = GLIBMM_STATIC_MUTEX_INIT;
  50 std::list<boost::weak_ptr<AudioSource> > SourceFactory::files_with_peaks;
  51
  52 static void
  53 peak_thread_work ()
  54 {
  55         PBD::ThreadCreated (pthread_self(), string ("peakbuilder-") + to_string (pthread_self(), std::dec));
  56
  57         while (true) {
  58
  59                 SourceFactory::peak_building_lock.lock ();
  60
  61           wait:
  62                 if (SourceFactory::files_with_peaks.empty()) {
  63                         SourceFactory::PeaksToBuild->wait (SourceFactory::peak_building_lock);
  64                 }
  65
  66                 if (SourceFactory::files_with_peaks.empty()) {
  67                         goto wait;
  68                 }
  69
  70                 boost::shared_ptr<AudioSource> as (SourceFactory::files_with_peaks.front().lock());
  71                 SourceFactory::files_with_peaks.pop_front ();
  72                 SourceFactory::peak_building_lock.unlock ();
  73
  74                 if (!as) {
  75                         continue;
  76                 }
  77
  78                 as->setup_peakfile ();
  79         }
  80 }
  81
  82 void
  83 SourceFactory::init ()
  84 {
  85         PeaksToBuild = new Glib::Cond();
  86
  87         for (int n = 0; n < 2; ++n) {
  88                 Glib::Thread::create (sigc::ptr_fun (::peak_thread_work), false);
  89         }
  90 }
  91
  92 int
  93 SourceFactory::setup_peakfile (boost::shared_ptr<Source> s, bool async)
  94 {
  95         boost::shared_ptr<AudioSource> as (boost::dynamic_pointer_cast<AudioSource> (s));
  96
  97         if (as) {
  98
  99                 if (async) {
 100
 101                         Glib::Mutex::Lock lm (peak_building_lock);
 102                         files_with_peaks.push_back (boost::weak_ptr<AudioSource> (as));
 103                         PeaksToBuild->broadcast ();
 104
 105                 } else {
 106
 107                         if (as->setup_peakfile ()) {
 108                                 error << string_compose("SourceFactory: could not set up peakfile for %1", as->name()) << endmsg;
 109                                 return -1;
 110                         }
 111                 }
 112         }
 113
 114         return 0;
 115 }
 116
 117 boost::shared_ptr<Source>
 118 SourceFactory::createSilent (Session& s, const XMLNode& node, nframes_t nframes, float sr)
 119 {
 120         boost::shared_ptr<Source> ret (new SilentFileSource (s, node, nframes, sr));
 121         // no analysis data - the file is non-existent
 122         SourceCreated (ret);
 123         return ret;
 124 }
 125
 126 boost::shared_ptr<Source>
 127 SourceFactory::create (Session& s, const XMLNode& node, bool defer_peaks)
 128 {
 129         DataType type = DataType::AUDIO;
 130         const XMLProperty* prop = node.property("type");
 131
 132         if (prop) {
 133                 type = DataType(prop->value());
 134         }
 135
 136         if (type == DataType::AUDIO) {
 137
 138                 try {
 139
 140                         boost::shared_ptr<Source> ret (new SndFileSource (s, node));
 141                         if (setup_peakfile (ret, defer_peaks)) {
 142                                 return boost::shared_ptr<Source>();
 143                         }
 144                         ret->check_for_analysis_data_on_disk ();
 145                         SourceCreated (ret);
 146                         return ret;
 147                 }
 148
 149                 catch (failed_constructor& err) {
 150
 151 #ifdef USE_COREAUDIO_FOR_FILES
 152
 153                         /* this is allowed to throw */
 154
 155                         boost::shared_ptr<Source> ret (new CoreAudioSource (s, node));
 156
 157                         if (setup_peakfile (ret, defer_peaks)) {
 158                                 return boost::shared_ptr<Source>();
 159                         }
 160
 161                         ret->check_for_analysis_data_on_disk ();
 162                         SourceCreated (ret);
 163                         return ret;
 164 #else
 165                         throw; // rethrow
 166 #endif
 167                 }
 168
 169         } else if (type == DataType::MIDI) {
 170                 boost::shared_ptr<Source> ret (new SMFSource (s, node));
 171                 ret->check_for_analysis_data_on_disk ();
 172                 SourceCreated (ret);
 173                 return ret;
 174         }
 175
 176         return boost::shared_ptr<Source>();
 177 }
 178
 179 boost::shared_ptr<Source>
 180 SourceFactory::createReadable (DataType type, Session& s, string path, int chn, AudioFileSource::Flag flags, bool announce, bool defer_peaks)
 181 {
 182         if (type == DataType::AUDIO) {
 183
 184                 if (!(flags & Destructive)) {
 185
 186                         try {
 187
 188                                 boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
 189
 190                                 if (setup_peakfile (ret, defer_peaks)) {
 191                                         return boost::shared_ptr<Source>();
 192                                 }
 193
 194                                 ret->check_for_analysis_data_on_disk ();
 195                                 if (announce) {
 196                                         SourceCreated (ret);
 197                                 }
 198                                 return ret;
 199                         }
 200
 201                         catch (failed_constructor& err) {
 202 #ifdef USE_COREAUDIO_FOR_FILES
 203
 204                                 boost::shared_ptr<Source> ret (new CoreAudioSource (s, path, chn, flags));
 205                                 if (setup_peakfile (ret, defer_peaks)) {
 206                                         return boost::shared_ptr<Source>();
 207                                 }
 208                                 ret->check_for_analysis_data_on_disk ();
 209                                 if (announce) {
 210                                         SourceCreated (ret);
 211                                 }
 212                                 return ret;
 213
 214 #else
 215                                 throw; // rethrow
 216 #endif
 217                         }
 218
 219                 } else {
 220                         // eh?
 221                 }
 222
 223         } else if (type == DataType::MIDI) {
 224
 225                 // FIXME: flags?
 226                 boost::shared_ptr<Source> ret (new SMFSource (s, path, SMFSource::Flag(0)));
 227
 228                 if (announce) {
 229                         SourceCreated (ret);
 230                 }
 231
 232                 return ret;
 233
 234         }
 235
 236         return boost::shared_ptr<Source>();
 237 }
 238
 239 boost::shared_ptr<Source>
 240 SourceFactory::createWritable (DataType type, Session& s, std::string path, bool destructive, nframes_t rate, bool announce, bool defer_peaks)
 241 {
 242         /* this might throw failed_constructor(), which is OK */
 243
 244         if (type == DataType::AUDIO) {
 245                 boost::shared_ptr<Source> ret (new SndFileSource
 246                                                (s, path,
 247                                                 Config->get_native_file_data_format(),
 248                                                 Config->get_native_file_header_format(),
 249                                                 rate,
 250                                                 (destructive ? AudioFileSource::Flag (SndFileSource::default_writable_flags | AudioFileSource::Destructive) :
 251                                                  SndFileSource::default_writable_flags)));
 252
 253                 if (setup_peakfile (ret, defer_peaks)) {
 254                         return boost::shared_ptr<Source>();
 255                 }
 256
 257                 // no analysis data - this is a new file
 258
 259                 if (announce) {
 260                         SourceCreated (ret);
 261                 }
 262                 return ret;
 263
 264         } else if (type == DataType::MIDI) {
 265
 266                 boost::shared_ptr<Source> ret (new SMFSource (s, path));
 267
 268                 // no analysis data - this is a new file
 269
 270                 if (announce) {
 271                         SourceCreated (ret);
 272                 }
 273                 return ret;
 274
 275         }
 276
 277         return boost::shared_ptr<Source> ();
 278 }