libs/ardour/ardour/export_graph_builder.h

   1 /*
   2     Copyright (C) 2009 Paul Davis
   3     Author: Sakari Bergen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __ardour_export_graph_builder_h__
  22 #define __ardour_export_graph_builder_h__
  23
  24 #include "ardour/ardour.h"
  25 #include "ardour/export_handler.h"
  26 #include "ardour/export_channel.h"
  27 #include "ardour/export_format_base.h"
  28
  29 #include "audiographer/utils/identity_vertex.h"
  30
  31 #include <boost/ptr_container/ptr_list.hpp>
  32 #include <glibmm/threadpool.h>
  33
  34 namespace AudioGrapher {
  35         class SampleRateConverter;
  36         class PeakReader;
  37         class Normalizer;
  38         template <typename T> class SampleFormatConverter;
  39         template <typename T> class Interleaver;
  40         template <typename T> class SndfileWriter;
  41         template <typename T> class SilenceTrimmer;
  42         template <typename T> class TmpFile;
  43         template <typename T> class Threader;
  44         template <typename T> class AllocatingProcessContext;
  45 }
  46
  47 namespace ARDOUR
  48 {
  49
  50 class ExportGraphBuilder
  51 {
  52   private:
  53         typedef ExportHandler::FileSpec FileSpec;
  54         typedef ExportElementFactory::FilenamePtr FilenamePtr;
  55
  56         typedef boost::shared_ptr<AudioGrapher::Sink<Sample> > FloatSinkPtr;
  57         typedef boost::shared_ptr<AudioGrapher::IdentityVertex<Sample> > IdentityVertexPtr;
  58         typedef std::map<ExportChannelPtr,  IdentityVertexPtr> ChannelMap;
  59
  60   public:
  61
  62         ExportGraphBuilder (Session const & session);
  63         ~ExportGraphBuilder ();
  64
  65         int process (nframes_t frames, bool last_cycle);
  66         bool process_normalize (); // returns true when finished
  67
  68         void reset ();
  69         void add_config (FileSpec const & config);
  70
  71   private:
  72
  73         void add_split_config (FileSpec const & config);
  74
  75         class Encoder {
  76           public:
  77                 template <typename T> boost::shared_ptr<AudioGrapher::Sink<T> > init (FileSpec const & new_config);
  78                 void add_child (FileSpec const & new_config);
  79                 bool operator== (FileSpec const & other_config) const;
  80
  81                 static int get_real_format (FileSpec const & config);
  82
  83           private:
  84                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<Sample> > FloatWriterPtr;
  85                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<int> >    IntWriterPtr;
  86                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<short> >  ShortWriterPtr;
  87
  88                 template<typename T> void init_writer (boost::shared_ptr<AudioGrapher::SndfileWriter<T> > & writer);
  89                 void copy_files (std::string orig_path);
  90
  91                 FileSpec               config;
  92                 std::list<FilenamePtr> filenames;
  93                 PBD::ScopedConnection  copy_files_connection;
  94
  95                 // Only one of these should be available at a time
  96                 FloatWriterPtr float_writer;
  97                 IntWriterPtr   int_writer;
  98                 ShortWriterPtr short_writer;
  99         };
 100
 101         // sample format converter
 102         class SFC {
 103           public:
 104                 // This constructor so that this can be constructed like a Normalizer
 105                 SFC (ExportGraphBuilder &, FileSpec const & new_config, nframes_t max_frames);
 106                 FloatSinkPtr sink ();
 107                 void add_child (FileSpec const & new_config);
 108                 bool operator== (FileSpec const & other_config) const;
 109
 110           private:
 111                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<Sample> > FloatConverterPtr;
 112                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<int> >   IntConverterPtr;
 113                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<short> > ShortConverterPtr;
 114
 115                 FileSpec           config;
 116                 boost::ptr_list<Encoder> children;
 117                 int                data_width;
 118
 119                 // Only one of these should be available at a time
 120                 FloatConverterPtr float_converter;
 121                 IntConverterPtr int_converter;
 122                 ShortConverterPtr short_converter;
 123         };
 124
 125         class Normalizer {
 126           public:
 127                 Normalizer (ExportGraphBuilder & parent, FileSpec const & new_config, nframes_t max_frames);
 128                 FloatSinkPtr sink ();
 129                 void add_child (FileSpec const & new_config);
 130                 bool operator== (FileSpec const & other_config) const;
 131
 132                 /// Returns true when finished
 133                 bool process ();
 134
 135           private:
 136                 typedef boost::shared_ptr<AudioGrapher::PeakReader> PeakReaderPtr;
 137                 typedef boost::shared_ptr<AudioGrapher::Normalizer> NormalizerPtr;
 138                 typedef boost::shared_ptr<AudioGrapher::TmpFile<Sample> > TmpFilePtr;
 139                 typedef boost::shared_ptr<AudioGrapher::Threader<Sample> > ThreaderPtr;
 140                 typedef boost::shared_ptr<AudioGrapher::AllocatingProcessContext<Sample> > BufferPtr;
 141
 142                 void start_post_processing();
 143
 144                 ExportGraphBuilder & parent;
 145
 146                 FileSpec        config;
 147                 nframes_t       max_frames_out;
 148
 149                 BufferPtr       buffer;
 150                 PeakReaderPtr   peak_reader;
 151                 TmpFilePtr      tmp_file;
 152                 NormalizerPtr   normalizer;
 153                 ThreaderPtr     threader;
 154                 boost::ptr_list<SFC> children;
 155
 156                 PBD::ScopedConnection post_processing_connection;
 157         };
 158
 159         // sample rate converter
 160         class SRC {
 161           public:
 162                 SRC (ExportGraphBuilder & parent, FileSpec const & new_config, nframes_t max_frames);
 163                 FloatSinkPtr sink ();
 164                 void add_child (FileSpec const & new_config);
 165                 bool operator== (FileSpec const & other_config) const;
 166
 167           private:
 168                 typedef boost::shared_ptr<AudioGrapher::SampleRateConverter> SRConverterPtr;
 169
 170                 template<typename T>
 171                 void add_child_to_list (FileSpec const & new_config, boost::ptr_list<T> & list);
 172
 173                 ExportGraphBuilder &  parent;
 174                 FileSpec              config;
 175                 boost::ptr_list<SFC>  children;
 176                 boost::ptr_list<Normalizer> normalized_children;
 177                 SRConverterPtr        converter;
 178                 nframes_t             max_frames_out;
 179         };
 180
 181         // Silence trimmer + adder
 182         class SilenceHandler {
 183           public:
 184                 SilenceHandler (ExportGraphBuilder & parent, FileSpec const & new_config, nframes_t max_frames);
 185                 FloatSinkPtr sink ();
 186                 void add_child (FileSpec const & new_config);
 187                 bool operator== (FileSpec const & other_config) const;
 188
 189           private:
 190                 typedef boost::shared_ptr<AudioGrapher::SilenceTrimmer<Sample> > SilenceTrimmerPtr;
 191
 192                 ExportGraphBuilder & parent;
 193                 FileSpec             config;
 194                 boost::ptr_list<SRC> children;
 195                 SilenceTrimmerPtr    silence_trimmer;
 196                 nframes_t            max_frames_in;
 197         };
 198
 199         // channel configuration
 200         class ChannelConfig {
 201           public:
 202                 ChannelConfig (ExportGraphBuilder & parent, FileSpec const & new_config, ChannelMap & channel_map);
 203                 void add_child (FileSpec const & new_config);
 204                 bool operator== (FileSpec const & other_config) const;
 205
 206           private:
 207                 typedef boost::shared_ptr<AudioGrapher::Interleaver<Sample> > InterleaverPtr;
 208
 209                 ExportGraphBuilder &      parent;
 210                 FileSpec                  config;
 211                 boost::ptr_list<SilenceHandler> children;
 212                 InterleaverPtr            interleaver;
 213                 nframes_t                 max_frames;
 214         };
 215
 216         Session const & session;
 217
 218         // Roots for export processor trees
 219         typedef boost::ptr_list<ChannelConfig> ChannelConfigList;
 220         ChannelConfigList channel_configs;
 221
 222         // The sources of all data, each channel is read only once
 223         ChannelMap channels;
 224
 225         Sample *  process_buffer;
 226         nframes_t process_buffer_frames;
 227
 228         std::list<Normalizer *> normalizers;
 229
 230         Glib::ThreadPool thread_pool;
 231 };
 232
 233 } // namespace ARDOUR
 234
 235 #endif /* __ardour_export_graph_builder_h__ */