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/identity_vertex.h"
  30
  31 #include <glibmm/threadpool.h>
  32
  33 namespace AudioGrapher {
  34         class SampleRateConverter;
  35         class PeakReader;
  36         class Normalizer;
  37         template <typename T> class SampleFormatConverter;
  38         template <typename T> class Interleaver;
  39         template <typename T> class SndfileWriter;
  40         template <typename T> class SilenceTrimmer;
  41         template <typename T> class TmpFile;
  42         template <typename T> class Threader;
  43         template <typename T> class AllocatingProcessContext;
  44 }
  45
  46 namespace ARDOUR
  47 {
  48
  49 class ExportGraphBuilder
  50 {
  51   private:
  52         typedef ExportHandler::FileSpec FileSpec;
  53         typedef ExportElementFactory::FilenamePtr FilenamePtr;
  54
  55         typedef boost::shared_ptr<AudioGrapher::Sink<Sample> > FloatSinkPtr;
  56         typedef boost::shared_ptr<AudioGrapher::IdentityVertex<Sample> > IdentityVertexPtr;
  57         typedef std::map<ExportChannelPtr,  IdentityVertexPtr> ChannelMap;
  58
  59   public:
  60
  61         ExportGraphBuilder (Session const & session);
  62         ~ExportGraphBuilder ();
  63
  64         int process (nframes_t frames, bool last_cycle);
  65
  66         void reset ();
  67         void add_config (FileSpec const & config);
  68
  69   private:
  70
  71         class Encoder : public sigc::trackable {
  72           public:
  73                 template <typename T> boost::shared_ptr<AudioGrapher::Sink<T> > init (FileSpec const & new_config);
  74                 void add_child (FileSpec const & new_config);
  75                 bool operator== (FileSpec const & other_config) const;
  76
  77                 static int get_real_format (FileSpec const & config);
  78
  79           private:
  80                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<Sample> > FloatWriterPtr;
  81                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<int> >    IntWriterPtr;
  82                 typedef boost::shared_ptr<AudioGrapher::SndfileWriter<short> >  ShortWriterPtr;
  83
  84                 template<typename T> void init_writer (boost::shared_ptr<AudioGrapher::SndfileWriter<T> > & writer);
  85                 void copy_files (std::string orig_path);
  86
  87                 FileSpec               config;
  88                 std::list<FilenamePtr> filenames;
  89
  90                 // Only one of these should be available at a time
  91                 FloatWriterPtr float_writer;
  92                 IntWriterPtr   int_writer;
  93                 ShortWriterPtr short_writer;
  94         };
  95
  96         // sample format converter
  97         class SFC {
  98           public:
  99                 // This constructor so that this can be constructed like a Normalizer
 100                 SFC (ExportGraphBuilder &) {}
 101                 FloatSinkPtr init (FileSpec const & new_config, nframes_t max_frames);
 102                 void add_child (FileSpec const & new_config);
 103                 bool operator== (FileSpec const & other_config) const;
 104
 105           private:
 106                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<Sample> > FloatConverterPtr;
 107                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<int> >   IntConverterPtr;
 108                 typedef boost::shared_ptr<AudioGrapher::SampleFormatConverter<short> > ShortConverterPtr;
 109
 110                 FileSpec           config;
 111                 std::list<Encoder> children;
 112                 int                data_width;
 113
 114                 // Only one of these should be available at a time
 115                 FloatConverterPtr float_converter;
 116                 IntConverterPtr   int_converter;
 117                 ShortConverterPtr short_converter;
 118         };
 119
 120         class Normalizer : public sigc::trackable {
 121           public:
 122                 Normalizer (ExportGraphBuilder & parent) : parent (parent) {}
 123                 FloatSinkPtr init (FileSpec const & new_config, nframes_t max_frames);
 124                 void add_child (FileSpec const & new_config);
 125                 bool operator== (FileSpec const & other_config) const;
 126
 127           private:
 128                 typedef boost::shared_ptr<AudioGrapher::PeakReader> PeakReaderPtr;
 129                 typedef boost::shared_ptr<AudioGrapher::Normalizer> NormalizerPtr;
 130                 typedef boost::shared_ptr<AudioGrapher::TmpFile<Sample> > TmpFilePtr;
 131                 typedef boost::shared_ptr<AudioGrapher::Threader<Sample> > ThreaderPtr;
 132                 typedef boost::shared_ptr<AudioGrapher::AllocatingProcessContext<Sample> > BufferPtr;
 133
 134                 void start_post_processing();
 135                 void do_post_processing();
 136
 137                 ExportGraphBuilder & parent;
 138
 139                 FileSpec        config;
 140                 nframes_t       max_frames_out;
 141
 142                 BufferPtr       buffer;
 143                 PeakReaderPtr   peak_reader;
 144                 TmpFilePtr      tmp_file;
 145                 NormalizerPtr   normalizer;
 146                 ThreaderPtr     threader;
 147                 std::list<SFC>  children;
 148         };
 149
 150         // sample rate converter
 151         class SRC {
 152           public:
 153                 SRC (ExportGraphBuilder & parent) : parent (parent) {}
 154                 FloatSinkPtr init (FileSpec const & new_config, nframes_t max_frames);
 155                 void add_child (FileSpec const & new_config);
 156                 bool operator== (FileSpec const & other_config) const;
 157
 158           private:
 159                 typedef boost::shared_ptr<AudioGrapher::SampleRateConverter> SRConverterPtr;
 160
 161                 template<typename T>
 162                 void add_child_to_list (FileSpec const & new_config, std::list<T> & list);
 163
 164                 ExportGraphBuilder &  parent;
 165                 FileSpec              config;
 166                 std::list<SFC>        children;
 167                 std::list<Normalizer> normalized_children;
 168                 SRConverterPtr        converter;
 169                 nframes_t             max_frames_out;
 170         };
 171
 172         // Silence trimmer + adder
 173         class SilenceHandler {
 174           public:
 175                 SilenceHandler (ExportGraphBuilder & parent) : parent (parent) {}
 176                 FloatSinkPtr init (FileSpec const & new_config, nframes_t max_frames);
 177                 void add_child (FileSpec const & new_config);
 178                 bool operator== (FileSpec const & other_config) const;
 179
 180           private:
 181                 typedef boost::shared_ptr<AudioGrapher::SilenceTrimmer<Sample> > SilenceTrimmerPtr;
 182
 183                 ExportGraphBuilder & parent;
 184                 FileSpec             config;
 185                 std::list<SRC>       children;
 186                 SilenceTrimmerPtr    silence_trimmer;
 187                 nframes_t            max_frames_in;
 188         };
 189
 190         // channel configuration
 191         class ChannelConfig {
 192           public:
 193                 ChannelConfig (ExportGraphBuilder & parent) : parent (parent) {}
 194                 void init (FileSpec const & new_config, ChannelMap & channel_map);
 195                 void add_child (FileSpec const & new_config);
 196                 bool operator== (FileSpec const & other_config) const;
 197
 198           private:
 199                 typedef boost::shared_ptr<AudioGrapher::Interleaver<Sample> > InterleaverPtr;
 200
 201                 ExportGraphBuilder &      parent;
 202                 FileSpec                  config;
 203                 std::list<SilenceHandler> children;
 204                 InterleaverPtr            interleaver;
 205                 nframes_t                 max_frames;
 206         };
 207
 208         Session const & session;
 209
 210         // Roots for export processor trees
 211         typedef std::list<ChannelConfig> ChannelConfigList;
 212         ChannelConfigList channel_configs;
 213
 214         // The sources of all data, each channel is read only once
 215         ChannelMap channels;
 216
 217         Sample *  process_buffer;
 218         nframes_t process_buffer_frames;
 219
 220         Glib::ThreadPool thread_pool;
 221 };
 222
 223 } // namespace ARDOUR
 224
 225 #endif /* __ardour_export_graph_builder_h__ */