2 Copyright (C) 2008-2012 Paul Davis
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.
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.
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.
21 #include "ardour/export_graph_builder.h"
25 #include <glibmm/miscutils.h>
27 #include "audiographer/process_context.h"
28 #include "audiographer/general/chunker.h"
29 #include "audiographer/general/cmdpipe_writer.h"
30 #include "audiographer/general/interleaver.h"
31 #include "audiographer/general/normalizer.h"
32 #include "audiographer/general/analyser.h"
33 #include "audiographer/general/peak_reader.h"
34 #include "audiographer/general/loudness_reader.h"
35 #include "audiographer/general/sample_format_converter.h"
36 #include "audiographer/general/sr_converter.h"
37 #include "audiographer/general/silence_trimmer.h"
38 #include "audiographer/general/threader.h"
39 #include "audiographer/sndfile/tmp_file.h"
40 #include "audiographer/sndfile/tmp_file_rt.h"
41 #include "audiographer/sndfile/tmp_file_sync.h"
42 #include "audiographer/sndfile/sndfile_writer.h"
44 #include "ardour/audioengine.h"
45 #include "ardour/export_channel_configuration.h"
46 #include "ardour/export_failed.h"
47 #include "ardour/export_filename.h"
48 #include "ardour/export_format_specification.h"
49 #include "ardour/export_timespan.h"
50 #include "ardour/filesystem_paths.h"
51 #include "ardour/session_directory.h"
52 #include "ardour/session_metadata.h"
53 #include "ardour/sndfile_helpers.h"
54 #include "ardour/system_exec.h"
56 #include "pbd/file_utils.h"
59 using namespace AudioGrapher;
64 ExportGraphBuilder::ExportGraphBuilder (Session const & session)
66 , thread_pool (hardware_concurrency())
68 process_buffer_samples = session.engine().samples_per_cycle();
71 ExportGraphBuilder::~ExportGraphBuilder ()
76 ExportGraphBuilder::process (samplecnt_t samples, bool last_cycle)
78 assert(samples <= process_buffer_samples);
80 for (ChannelMap::iterator it = channels.begin(); it != channels.end(); ++it) {
81 Sample const * process_buffer = 0;
82 it->first->read (process_buffer, samples);
83 ConstProcessContext<Sample> context(process_buffer, samples, 1);
84 if (last_cycle) { context().set_flag (ProcessContext<Sample>::EndOfInput); }
85 it->second->process (context);
92 ExportGraphBuilder::post_process ()
94 for (std::list<Intermediate *>::iterator it = intermediates.begin(); it != intermediates.end(); /* ++ in loop */) {
95 if ((*it)->process()) {
96 it = intermediates.erase (it);
102 return intermediates.empty();
106 ExportGraphBuilder::get_postprocessing_cycle_count() const
109 for (std::list<Intermediate *>::const_iterator it = intermediates.begin(); it != intermediates.end(); ++it) {
110 max = std::max(max, (*it)->get_postprocessing_cycle_count());
116 ExportGraphBuilder::reset ()
119 channel_configs.clear ();
121 intermediates.clear ();
122 analysis_map.clear();
127 ExportGraphBuilder::cleanup (bool remove_out_files/*=false*/)
129 ChannelConfigList::iterator iter = channel_configs.begin();
131 while (iter != channel_configs.end() ) {
132 iter->remove_children(remove_out_files);
133 iter = channel_configs.erase(iter);
138 ExportGraphBuilder::set_current_timespan (boost::shared_ptr<ExportTimespan> span)
144 ExportGraphBuilder::add_config (FileSpec const & config, bool rt)
146 ExportChannelConfiguration::ChannelList const & channels =
147 config.channel_config->get_channels();
148 for(ExportChannelConfiguration::ChannelList::const_iterator it = channels.begin();
149 it != channels.end(); ++it) {
150 (*it)->set_max_buffer_size(process_buffer_samples);
155 // If the sample rate is "session rate", change it to the real value.
156 // However, we need to copy it to not change the config which is saved...
157 FileSpec new_config (config);
158 new_config.format.reset(new ExportFormatSpecification(*new_config.format, false));
159 if(new_config.format->sample_rate() == ExportFormatBase::SR_Session) {
160 samplecnt_t session_rate = session.nominal_sample_rate();
161 new_config.format->set_sample_rate(ExportFormatBase::nearest_sample_rate(session_rate));
165 if (!new_config.channel_config->get_split ()) {
166 add_split_config (new_config);
170 // Split channel configurations are split into several channel configurations,
171 // each corresponding to a file, at this stage
172 typedef std::list<boost::shared_ptr<ExportChannelConfiguration> > ConfigList;
173 ConfigList file_configs;
174 new_config.channel_config->configurations_for_files (file_configs);
177 for (ConfigList::iterator it = file_configs.begin(); it != file_configs.end(); ++it, ++chan) {
178 FileSpec copy = new_config;
179 copy.channel_config = *it;
181 copy.filename.reset (new ExportFilename (*copy.filename));
182 copy.filename->include_channel = true;
183 copy.filename->set_channel (chan);
185 add_split_config (copy);
190 ExportGraphBuilder::get_analysis_results (AnalysisResults& results) {
191 for (AnalysisMap::iterator i = analysis_map.begin(); i != analysis_map.end(); ++i) {
192 ExportAnalysisPtr p = i->second->result ();
194 results.insert (std::make_pair (i->first, p));
200 ExportGraphBuilder::add_split_config (FileSpec const & config)
202 for (ChannelConfigList::iterator it = channel_configs.begin(); it != channel_configs.end(); ++it) {
204 it->add_child (config);
209 // No duplicate channel config found, create new one
210 channel_configs.push_back (new ChannelConfig (*this, config, channels));
216 boost::shared_ptr<AudioGrapher::Sink<Sample> >
217 ExportGraphBuilder::Encoder::init (FileSpec const & new_config)
220 if (config.format->format_id() == ExportFormatBase::F_FFMPEG) {
221 init_writer (pipe_writer);
224 init_writer (float_writer);
230 boost::shared_ptr<AudioGrapher::Sink<int> >
231 ExportGraphBuilder::Encoder::init (FileSpec const & new_config)
234 init_writer (int_writer);
239 boost::shared_ptr<AudioGrapher::Sink<short> >
240 ExportGraphBuilder::Encoder::init (FileSpec const & new_config)
243 init_writer (short_writer);
248 ExportGraphBuilder::Encoder::add_child (FileSpec const & new_config)
250 filenames.push_back (new_config.filename);
254 ExportGraphBuilder::Encoder::destroy_writer (bool delete_out_file)
256 if (delete_out_file ) {
259 float_writer->close ();
263 int_writer->close ();
267 short_writer->close ();
271 pipe_writer->close ();
274 if (std::remove(writer_filename.c_str() ) != 0) {
275 std::cout << "Encoder::destroy_writer () : Error removing file: " << strerror(errno) << std::endl;
279 float_writer.reset ();
281 short_writer.reset ();
282 pipe_writer.reset ();
286 ExportGraphBuilder::Encoder::operator== (FileSpec const & other_config) const
288 return get_real_format (config) == get_real_format (other_config);
292 ExportGraphBuilder::Encoder::get_real_format (FileSpec const & config)
294 ExportFormatSpecification & format = *config.format;
295 return format.format_id() | format.sample_format() | format.endianness();
300 ExportGraphBuilder::Encoder::init_writer (boost::shared_ptr<AudioGrapher::SndfileWriter<T> > & writer)
302 unsigned channels = config.channel_config->get_n_chans();
303 int format = get_real_format (config);
304 config.filename->set_channel_config(config.channel_config);
305 writer_filename = config.filename->get_path (config.format);
307 writer.reset (new AudioGrapher::SndfileWriter<T> (writer_filename, format, channels, config.format->sample_rate(), config.broadcast_info));
308 writer->FileWritten.connect_same_thread (copy_files_connection, boost::bind (&ExportGraphBuilder::Encoder::copy_files, this, _1));
309 if (format & ExportFormatBase::SF_Vorbis) {
310 /* libsndfile uses range 0..1 (worst.. best) for
311 * SFC_SET_VBR_ENCODING_QUALITY and maps
312 * SFC_SET_COMPRESSION_LEVEL = 1.0 - VBR_ENCODING_QUALITY
314 double vorbis_quality = config.format->codec_quality () / 100.f;
315 if (vorbis_quality >= 0 && vorbis_quality <= 1.0) {
316 writer->command (SFC_SET_VBR_ENCODING_QUALITY, &vorbis_quality, sizeof (double));
323 ExportGraphBuilder::Encoder::init_writer (boost::shared_ptr<AudioGrapher::CmdPipeWriter<T> > & writer)
325 unsigned channels = config.channel_config->get_n_chans();
326 config.filename->set_channel_config(config.channel_config);
327 writer_filename = config.filename->get_path (config.format);
329 std::string ffmpeg_exe;
332 if (!ArdourVideoToolPaths::transcoder_exe (ffmpeg_exe, unused)) {
333 throw ExportFailed ("External encoder (ffmpeg) is not available.");
336 int quality = config.format->codec_quality ();
339 char **argp = (char**) calloc (100, sizeof(char*));
341 argp[a++] = strdup(ffmpeg_exe.c_str());
342 argp[a++] = strdup ("-f");
343 argp[a++] = strdup ("f32le");
344 argp[a++] = strdup ("-acodec");
345 argp[a++] = strdup ("pcm_f32le");
346 argp[a++] = strdup ("-ac");
347 snprintf (tmp, sizeof(tmp), "%d", channels);
348 argp[a++] = strdup (tmp);
349 argp[a++] = strdup ("-ar");
350 snprintf (tmp, sizeof(tmp), "%d", config.format->sample_rate());
351 argp[a++] = strdup (tmp);
352 argp[a++] = strdup ("-i");
353 argp[a++] = strdup ("pipe:0");
355 argp[a++] = strdup ("-y");
357 /* variable rate, lower is better */
358 snprintf (tmp, sizeof(tmp), "%d", -quality);
359 argp[a++] = strdup ("-q:a"); argp[a++] = strdup (tmp);
361 /* fixed bitrate, higher is better */
362 snprintf (tmp, sizeof(tmp), "%dk", quality); // eg. "192k"
363 argp[a++] = strdup ("-b:a"); argp[a++] = strdup (tmp);
366 SessionMetadata::MetaDataMap meta;
367 meta["comment"] = "Created with " PROGRAM_NAME;
369 if (config.format->tag()) {
370 ARDOUR::SessionMetadata* session_data = ARDOUR::SessionMetadata::Metadata();
371 session_data->av_export_tag (meta);
374 for(SessionMetadata::MetaDataMap::const_iterator it = meta.begin(); it != meta.end(); ++it) {
375 argp[a++] = strdup("-metadata");
376 argp[a++] = SystemExec::format_key_value_parameter (it->first.c_str(), it->second.c_str());
379 argp[a++] = strdup (writer_filename.c_str());
382 /* argp is free()d in ~SystemExec,
383 * SystemExec is deleted when writer is destroyed */
384 ARDOUR::SystemExec* exec = new ARDOUR::SystemExec (ffmpeg_exe, argp);
385 PBD::info << "Encode command: { " << exec->to_s () << "}" << endmsg;
386 if (exec->start (SystemExec::MergeWithStdin)) {
387 throw ExportFailed ("External encoder (ffmpeg) cannot be started.");
389 writer.reset (new AudioGrapher::CmdPipeWriter<T> (exec, writer_filename));
390 writer->FileWritten.connect_same_thread (copy_files_connection, boost::bind (&ExportGraphBuilder::Encoder::copy_files, this, _1));
394 ExportGraphBuilder::Encoder::copy_files (std::string orig_path)
396 while (filenames.size()) {
397 ExportFilenamePtr & filename = filenames.front();
398 PBD::copy_file (orig_path, filename->get_path (config.format).c_str());
399 filenames.pop_front();
405 ExportGraphBuilder::SFC::SFC (ExportGraphBuilder &parent, FileSpec const & new_config, samplecnt_t max_samples)
409 data_width = sndfile_data_width (Encoder::get_real_format (config));
410 unsigned channels = new_config.channel_config->get_n_chans();
411 _analyse = config.format->analyse();
413 samplecnt_t sample_rate = parent.session.nominal_sample_rate();
414 samplecnt_t sb = config.format->silence_beginning_at (parent.timespan->get_start(), sample_rate);
415 samplecnt_t se = config.format->silence_end_at (parent.timespan->get_end(), sample_rate);
416 samplecnt_t duration = parent.timespan->get_length () + sb + se;
417 max_samples = min ((samplecnt_t) 8192 * channels, max ((samplecnt_t) 4096 * channels, max_samples));
418 chunker.reset (new Chunker<Sample> (max_samples));
419 analyser.reset (new Analyser (config.format->sample_rate(), channels, max_samples,
420 (samplecnt_t) ceil (duration * config.format->sample_rate () / (double) sample_rate)));
421 chunker->add_output (analyser);
423 config.filename->set_channel_config (config.channel_config);
424 parent.add_analyser (config.filename->get_path (config.format), analyser);
427 if (data_width == 8 || data_width == 16) {
428 short_converter = ShortConverterPtr (new SampleFormatConverter<short> (channels));
429 short_converter->init (max_samples, config.format->dither_type(), data_width);
431 if (_analyse) { analyser->add_output (short_converter); }
433 } else if (data_width == 24 || data_width == 32) {
434 int_converter = IntConverterPtr (new SampleFormatConverter<int> (channels));
435 int_converter->init (max_samples, config.format->dither_type(), data_width);
437 if (_analyse) { analyser->add_output (int_converter); }
439 int actual_data_width = 8 * sizeof(Sample);
440 float_converter = FloatConverterPtr (new SampleFormatConverter<Sample> (channels));
441 float_converter->init (max_samples, config.format->dither_type(), actual_data_width);
443 if (_analyse) { analyser->add_output (float_converter); }
448 ExportGraphBuilder::SFC::set_peak (float gain)
451 analyser->set_normalization_gain (gain);
455 ExportGraphBuilder::FloatSinkPtr
456 ExportGraphBuilder::SFC::sink ()
460 } else if (data_width == 8 || data_width == 16) {
461 return short_converter;
462 } else if (data_width == 24 || data_width == 32) {
463 return int_converter;
465 return float_converter;
470 ExportGraphBuilder::SFC::add_child (FileSpec const & new_config)
472 for (boost::ptr_list<Encoder>::iterator it = children.begin(); it != children.end(); ++it) {
473 if (*it == new_config) {
474 it->add_child (new_config);
479 children.push_back (new Encoder());
480 Encoder & encoder = children.back();
482 if (data_width == 8 || data_width == 16) {
483 short_converter->add_output (encoder.init<short> (new_config));
484 } else if (data_width == 24 || data_width == 32) {
485 int_converter->add_output (encoder.init<int> (new_config));
487 float_converter->add_output (encoder.init<Sample> (new_config));
492 ExportGraphBuilder::SFC::remove_children (bool remove_out_files)
494 boost::ptr_list<Encoder>::iterator iter = children.begin ();
496 while (iter != children.end() ) {
498 if (remove_out_files) {
499 iter->destroy_writer(remove_out_files);
501 iter = children.erase (iter);
506 ExportGraphBuilder::SFC::operator== (FileSpec const & other_config) const
508 return config.format->sample_format() == other_config.format->sample_format();
511 /* Intermediate (Normalizer, TmpFile) */
513 ExportGraphBuilder::Intermediate::Intermediate (ExportGraphBuilder & parent, FileSpec const & new_config, samplecnt_t max_samples)
515 , use_loudness (false)
518 std::string tmpfile_path = parent.session.session_directory().export_path();
519 tmpfile_path = Glib::build_filename(tmpfile_path, "XXXXXX");
520 std::vector<char> tmpfile_path_buf(tmpfile_path.size() + 1);
521 std::copy(tmpfile_path.begin(), tmpfile_path.end(), tmpfile_path_buf.begin());
522 tmpfile_path_buf[tmpfile_path.size()] = '\0';
525 uint32_t const channels = config.channel_config->get_n_chans();
526 max_samples_out = 4086 - (4086 % channels); // TODO good chunk size
527 use_loudness = config.format->normalize_loudness ();
528 use_peak = config.format->normalize ();
530 buffer.reset (new AllocatingProcessContext<Sample> (max_samples_out, channels));
533 peak_reader.reset (new PeakReader ());
536 loudness_reader.reset (new LoudnessReader (config.format->sample_rate(), channels, max_samples));
539 normalizer.reset (new AudioGrapher::Normalizer (use_loudness ? 0.0 : config.format->normalize_dbfs()));
540 threader.reset (new Threader<Sample> (parent.thread_pool));
541 normalizer->alloc_buffer (max_samples_out);
542 normalizer->add_output (threader);
544 int format = ExportFormatBase::F_RAW | ExportFormatBase::SF_Float;
546 if (parent._realtime) {
547 tmp_file.reset (new TmpFileRt<float> (&tmpfile_path_buf[0], format, channels, config.format->sample_rate()));
549 tmp_file.reset (new TmpFileSync<float> (&tmpfile_path_buf[0], format, channels, config.format->sample_rate()));
552 tmp_file->FileWritten.connect_same_thread (post_processing_connection,
553 boost::bind (&Intermediate::prepare_post_processing, this));
554 tmp_file->FileFlushed.connect_same_thread (post_processing_connection,
555 boost::bind (&Intermediate::start_post_processing, this));
557 add_child (new_config);
560 loudness_reader->add_output (tmp_file);
561 } else if (use_peak) {
562 peak_reader->add_output (tmp_file);
566 ExportGraphBuilder::FloatSinkPtr
567 ExportGraphBuilder::Intermediate::sink ()
570 return loudness_reader;
571 } else if (use_peak) {
578 ExportGraphBuilder::Intermediate::add_child (FileSpec const & new_config)
580 for (boost::ptr_list<SFC>::iterator it = children.begin(); it != children.end(); ++it) {
581 if (*it == new_config) {
582 it->add_child (new_config);
587 children.push_back (new SFC (parent, new_config, max_samples_out));
588 threader->add_output (children.back().sink());
592 ExportGraphBuilder::Intermediate::remove_children (bool remove_out_files)
594 boost::ptr_list<SFC>::iterator iter = children.begin ();
596 while (iter != children.end() ) {
597 iter->remove_children (remove_out_files);
598 iter = children.erase (iter);
603 ExportGraphBuilder::Intermediate::operator== (FileSpec const & other_config) const
605 return config.format->normalize() == other_config.format->normalize() &&
606 config.format->normalize_loudness () == other_config.format->normalize_loudness() &&
608 (!config.format->normalize_loudness () && config.format->normalize_dbfs() == other_config.format->normalize_dbfs())
610 // FIXME: allow simultaneous export of two formats with different loundness normalization settings
611 (config.format->normalize_loudness () /* lufs/dbtp is a result option, not an instantaion option */)
616 ExportGraphBuilder::Intermediate::get_postprocessing_cycle_count() const
618 return static_cast<unsigned>(std::ceil(static_cast<float>(tmp_file->get_samples_written()) /
623 ExportGraphBuilder::Intermediate::process()
625 samplecnt_t samples_read = tmp_file->read (*buffer);
626 return samples_read != buffer->samples();
630 ExportGraphBuilder::Intermediate::prepare_post_processing()
632 // called in sync rt-context
635 gain = normalizer->set_peak (loudness_reader->get_peak (config.format->normalize_lufs (), config.format->normalize_dbtp ()));
636 } else if (use_peak) {
637 gain = normalizer->set_peak (peak_reader->get_peak());
639 gain = normalizer->set_peak (0.0);
641 if (use_loudness || use_peak) {
642 // push info to analyzers
643 for (boost::ptr_list<SFC>::iterator i = children.begin(); i != children.end(); ++i) {
644 (*i).set_peak (gain);
647 tmp_file->add_output (normalizer);
648 parent.intermediates.push_back (this);
652 ExportGraphBuilder::Intermediate::start_post_processing()
654 // called in disk-thread (when exporting in realtime)
655 tmp_file->seek (0, SEEK_SET);
656 if (!AudioEngine::instance()->freewheeling ()) {
657 AudioEngine::instance()->freewheel (true);
663 ExportGraphBuilder::SRC::SRC (ExportGraphBuilder & parent, FileSpec const & new_config, samplecnt_t max_samples)
667 converter.reset (new SampleRateConverter (new_config.channel_config->get_n_chans()));
668 ExportFormatSpecification & format = *new_config.format;
669 converter->init (parent.session.nominal_sample_rate(), format.sample_rate(), format.src_quality());
670 max_samples_out = converter->allocate_buffers (max_samples);
672 add_child (new_config);
675 ExportGraphBuilder::FloatSinkPtr
676 ExportGraphBuilder::SRC::sink ()
682 ExportGraphBuilder::SRC::add_child (FileSpec const & new_config)
684 if (new_config.format->normalize() || parent._realtime) {
685 add_child_to_list (new_config, intermediate_children);
687 add_child_to_list (new_config, children);
692 ExportGraphBuilder::SRC::remove_children (bool remove_out_files)
694 boost::ptr_list<SFC>::iterator sfc_iter = children.begin();
696 while (sfc_iter != children.end() ) {
697 converter->remove_output (sfc_iter->sink() );
698 sfc_iter->remove_children (remove_out_files);
699 sfc_iter = children.erase (sfc_iter);
702 boost::ptr_list<Intermediate>::iterator norm_iter = intermediate_children.begin();
704 while (norm_iter != intermediate_children.end() ) {
705 converter->remove_output (norm_iter->sink() );
706 norm_iter->remove_children (remove_out_files);
707 norm_iter = intermediate_children.erase (norm_iter);
714 ExportGraphBuilder::SRC::add_child_to_list (FileSpec const & new_config, boost::ptr_list<T> & list)
716 for (typename boost::ptr_list<T>::iterator it = list.begin(); it != list.end(); ++it) {
717 if (*it == new_config) {
718 it->add_child (new_config);
723 list.push_back (new T (parent, new_config, max_samples_out));
724 converter->add_output (list.back().sink ());
728 ExportGraphBuilder::SRC::operator== (FileSpec const & other_config) const
730 return config.format->sample_rate() == other_config.format->sample_rate();
734 ExportGraphBuilder::SilenceHandler::SilenceHandler (ExportGraphBuilder & parent, FileSpec const & new_config, samplecnt_t max_samples)
738 max_samples_in = max_samples;
739 samplecnt_t sample_rate = parent.session.nominal_sample_rate();
741 /* work around partsing "-inf" config to "0" -- 7b1f97b
742 * silence trim 0dBFS makes no sense, anyway.
744 float est = Config->get_export_silence_threshold ();
745 if (est >= 0.f) est = -INFINITY;
747 // Mixbus channelstrip always dithers the signal, cut above dither level
748 silence_trimmer.reset (new SilenceTrimmer<Sample>(max_samples_in, std::max (-90.f, est)));
750 // TODO silence-threshold should be per export-preset, with Config->get_silence_threshold being the default
751 silence_trimmer.reset (new SilenceTrimmer<Sample>(max_samples_in, est));
753 silence_trimmer->set_trim_beginning (config.format->trim_beginning());
754 silence_trimmer->set_trim_end (config.format->trim_end());
756 samplecnt_t sb = config.format->silence_beginning_at (parent.timespan->get_start(), sample_rate);
757 samplecnt_t se = config.format->silence_end_at (parent.timespan->get_end(), sample_rate);
759 silence_trimmer->add_silence_to_beginning (sb);
760 silence_trimmer->add_silence_to_end (se);
762 add_child (new_config);
765 ExportGraphBuilder::FloatSinkPtr
766 ExportGraphBuilder::SilenceHandler::sink ()
768 return silence_trimmer;
772 ExportGraphBuilder::SilenceHandler::add_child (FileSpec const & new_config)
774 for (boost::ptr_list<SRC>::iterator it = children.begin(); it != children.end(); ++it) {
775 if (*it == new_config) {
776 it->add_child (new_config);
781 children.push_back (new SRC (parent, new_config, max_samples_in));
782 silence_trimmer->add_output (children.back().sink());
786 ExportGraphBuilder::SilenceHandler::remove_children (bool remove_out_files)
788 boost::ptr_list<SRC>::iterator iter = children.begin();
790 while (iter != children.end() ) {
791 silence_trimmer->remove_output (iter->sink() );
792 iter->remove_children (remove_out_files);
793 iter = children.erase (iter);
798 ExportGraphBuilder::SilenceHandler::operator== (FileSpec const & other_config) const
800 ExportFormatSpecification & format = *config.format;
801 ExportFormatSpecification & other_format = *other_config.format;
802 return (format.trim_beginning() == other_format.trim_beginning()) &&
803 (format.trim_end() == other_format.trim_end()) &&
804 (format.silence_beginning_time() == other_format.silence_beginning_time()) &&
805 (format.silence_end_time() == other_format.silence_end_time());
810 ExportGraphBuilder::ChannelConfig::ChannelConfig (ExportGraphBuilder & parent, FileSpec const & new_config, ChannelMap & channel_map)
813 typedef ExportChannelConfiguration::ChannelList ChannelList;
817 samplecnt_t max_samples = parent.session.engine().samples_per_cycle();
818 interleaver.reset (new Interleaver<Sample> ());
819 interleaver->init (new_config.channel_config->get_n_chans(), max_samples);
821 // Make the chunk size divisible by the channel count
822 int chan_count = new_config.channel_config->get_n_chans();
823 max_samples_out = 8192;
824 if (chan_count > 0) {
825 max_samples_out -= max_samples_out % chan_count;
827 chunker.reset (new Chunker<Sample> (max_samples_out));
828 interleaver->add_output(chunker);
830 ChannelList const & channel_list = config.channel_config->get_channels();
832 for (ChannelList::const_iterator it = channel_list.begin(); it != channel_list.end(); ++it, ++chan) {
833 ChannelMap::iterator map_it = channel_map.find (*it);
834 if (map_it == channel_map.end()) {
835 std::pair<ChannelMap::iterator, bool> result_pair =
836 channel_map.insert (std::make_pair (*it, IdentityVertexPtr (new IdentityVertex<Sample> ())));
837 assert (result_pair.second);
838 map_it = result_pair.first;
840 map_it->second->add_output (interleaver->input (chan));
843 add_child (new_config);
847 ExportGraphBuilder::ChannelConfig::add_child (FileSpec const & new_config)
849 assert (*this == new_config);
851 for (boost::ptr_list<SilenceHandler>::iterator it = children.begin(); it != children.end(); ++it) {
852 if (*it == new_config) {
853 it->add_child (new_config);
858 children.push_back (new SilenceHandler (parent, new_config, max_samples_out));
859 chunker->add_output (children.back().sink ());
863 ExportGraphBuilder::ChannelConfig::remove_children (bool remove_out_files)
865 boost::ptr_list<SilenceHandler>::iterator iter = children.begin();
867 while(iter != children.end() ) {
869 chunker->remove_output (iter->sink ());
870 iter->remove_children (remove_out_files);
871 iter = children.erase(iter);
876 ExportGraphBuilder::ChannelConfig::operator== (FileSpec const & other_config) const
878 return config.channel_config == other_config.channel_config;
881 } // namespace ARDOUR