diff options
author | Robin Gareus <robin@gareus.org> | 2016-03-11 17:23:39 +0100 |
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committer | Robin Gareus <robin@gareus.org> | 2016-03-11 17:26:42 +0100 |
commit | 43603a98935b00f5cbf4082e15da19d2ba4ee9b5 (patch) | |
tree | 7ad0ec983b50fe72f302a31a575797297dff7373 /libs | |
parent | bd519627d1d834d57b3ad022e1d5bf6ca12c888a (diff) |
prepare region/range loudness analysis
Diffstat (limited to 'libs')
-rw-r--r-- | libs/ardour/analysis_graph.cc | 148 | ||||
-rw-r--r-- | libs/ardour/ardour/analysis_graph.h | 74 | ||||
-rw-r--r-- | libs/ardour/ardour/types.h | 2 | ||||
-rw-r--r-- | libs/ardour/wscript | 1 |
4 files changed, 224 insertions, 1 deletions
diff --git a/libs/ardour/analysis_graph.cc b/libs/ardour/analysis_graph.cc new file mode 100644 index 0000000000..53966fdfca --- /dev/null +++ b/libs/ardour/analysis_graph.cc @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2016 Robin Gareus <robin@gareus.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + + +#include "ardour/analysis_graph.h" +#include "ardour/route.h" +#include "ardour/session.h" + +#include "timecode/time.h" + +#include "audiographer/process_context.h" +#include "audiographer/general/chunker.h" +#include "audiographer/general/interleaver.h" +#include "audiographer/general/analyser.h" +#include "audiographer/general/peak_reader.h" + +#include "i18n.h" + +using namespace ARDOUR; +using namespace AudioGrapher; + +AnalysisGraph::AnalysisGraph (Session *s) + : _session (s) + , _max_chunksize (8192) + , _frames_read (0) + , _frames_end (0) + , _canceled (false) +{ + _buf = (Sample *) malloc(sizeof(Sample) * _max_chunksize); + _mixbuf = (Sample *) malloc(sizeof(Sample) * _max_chunksize); + _gainbuf = (float *) malloc(sizeof(float) * _max_chunksize); +} + +AnalysisGraph::~AnalysisGraph () +{ + free (_buf); + free (_mixbuf); + free (_gainbuf); +} + +void +AnalysisGraph::analyze_region (boost::shared_ptr<AudioRegion> region) +{ + interleaver.reset (new Interleaver<Sample> ()); + interleaver->init (region->n_channels(), _max_chunksize); + chunker.reset (new Chunker<Sample> (_max_chunksize)); + analyser.reset (new Analyser ( + _session->nominal_frame_rate(), + region->n_channels(), + _max_chunksize, + region->length())); + + interleaver->add_output(chunker); + chunker->add_output (analyser); + + framecnt_t x = 0; + framecnt_t length = region->length(); + while (x < length) { + framecnt_t chunk = std::min (_max_chunksize, length - x); + framecnt_t n = 0; + for (unsigned int channel = 0; channel < region->n_channels(); ++channel) { + memset (_buf, 0, chunk * sizeof (Sample)); + n = region->read_at (_buf, _mixbuf, _gainbuf, region->position() + x, chunk, channel); + ConstProcessContext<Sample> context (_buf, n, 1); + if (n < _max_chunksize) { + context().set_flag (ProcessContext<Sample>::EndOfInput); + } + interleaver->input (channel)->process (context); + + if (n == 0) { + std::cerr << "AnalysisGraph::analyze_region read zero samples\n"; + break; + } + } + x += n; + _frames_read += n; + Progress (_frames_read, _frames_end); + if (_canceled) { + return; + } + } + _results.insert (std::make_pair (region->name(), analyser->result ())); +} + +void +AnalysisGraph::analyze_range (boost::shared_ptr<Route> route, boost::shared_ptr<AudioPlaylist> pl, const std::list<AudioRange>& range) +{ + const uint32_t n_audio = route->n_inputs().n_audio(); + + for (std::list<AudioRange>::const_iterator j = range.begin(); j != range.end(); ++j) { + + interleaver.reset (new Interleaver<Sample> ()); + interleaver->init (n_audio, _max_chunksize); + chunker.reset (new Chunker<Sample> (_max_chunksize)); + analyser.reset (new Analyser (48000.f, n_audio, _max_chunksize, (*j).length())); + + interleaver->add_output(chunker); + chunker->add_output (analyser); + + framecnt_t x = 0; + while (x < j->length()) { + framecnt_t chunk = std::min (_max_chunksize, (*j).length() - x); + framecnt_t n = 0; + for (uint32_t channel = 0; channel < n_audio; ++channel) { + n = pl->read (_buf, _mixbuf, _gainbuf, (*j).start + x, chunk, channel); + + ConstProcessContext<Sample> context (_buf, n, 1); + if (n < _max_chunksize) { + context().set_flag (ProcessContext<Sample>::EndOfInput); + } + interleaver->input (channel)->process (context); + } + x += n; + _frames_read += n; + Progress (_frames_read, _frames_end); + if (_canceled) { + return; + } + } + + std::string name = string_compose (_("%1 (%2..%3)"), route->name(), + Timecode::timecode_format_sampletime ( + (*j).start, + _session->nominal_frame_rate(), + 100, false), + Timecode::timecode_format_sampletime ( + (*j).start + (*j).length(), + _session->nominal_frame_rate(), + 100, false) + ); + _results.insert (std::make_pair (name, analyser->result ())); + } +} diff --git a/libs/ardour/ardour/analysis_graph.h b/libs/ardour/ardour/analysis_graph.h new file mode 100644 index 0000000000..c042e25771 --- /dev/null +++ b/libs/ardour/ardour/analysis_graph.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2016 Robin Gareus <robin@gareus.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __ardour_analysis_graph_h__ +#define __ardour_analysis_graph_h__ + +#include <map> +#include <set> +#include <cstring> +#include <boost/shared_ptr.hpp> + +#include "ardour/audioregion.h" +#include "ardour/audioplaylist.h" +#include "ardour/export_analysis.h" + +namespace AudioGrapher { + class Analyser; + template <typename T> class Chunker; + template <typename T> class Interleaver; +} + +namespace ARDOUR { +class AnalysisGraph { + public: + AnalysisGraph (ARDOUR::Session*); + ~AnalysisGraph (); + + void analyze_region (boost::shared_ptr<ARDOUR::AudioRegion>); + void analyze_range (boost::shared_ptr<ARDOUR::Route>, boost::shared_ptr<ARDOUR::AudioPlaylist>, const std::list<AudioRange>&); + const AnalysisResults& results () const { return _results; } + + void cancel () { _canceled = true; } + bool canceled () const { return _canceled; } + + void set_total_frames (framecnt_t p) { _frames_end = p; } + PBD::Signal2<void, framecnt_t, framecnt_t> Progress; + + private: + ARDOUR::Session* _session; + AnalysisResults _results; + framecnt_t _max_chunksize; + + ARDOUR::Sample* _buf; + ARDOUR::Sample* _mixbuf; + float* _gainbuf; + framecnt_t _frames_read; + framecnt_t _frames_end; + bool _canceled; + + typedef boost::shared_ptr<AudioGrapher::Analyser> AnalysisPtr; + typedef boost::shared_ptr<AudioGrapher::Chunker<float> > ChunkerPtr; + typedef boost::shared_ptr<AudioGrapher::Interleaver<Sample> > InterleaverPtr; + + InterleaverPtr interleaver; + ChunkerPtr chunker; + AnalysisPtr analyser; +}; +} // namespace ARDOUR +#endif diff --git a/libs/ardour/ardour/types.h b/libs/ardour/ardour/types.h index 97dba38d71..8c47666873 100644 --- a/libs/ardour/ardour/types.h +++ b/libs/ardour/ardour/types.h @@ -318,7 +318,7 @@ namespace ARDOUR { AudioRange (framepos_t s, framepos_t e, uint32_t i) : start (s), end (e) , id (i) {} - framecnt_t length() { return end - start + 1; } + framecnt_t length() const { return end - start + 1; } bool operator== (const AudioRange& other) const { return start == other.start && end == other.end && id == other.id; diff --git a/libs/ardour/wscript b/libs/ardour/wscript index ec404e6463..31d2c50681 100644 --- a/libs/ardour/wscript +++ b/libs/ardour/wscript @@ -21,6 +21,7 @@ path_prefix = 'libs/ardour/' libardour_sources = [ 'amp.cc', 'analyser.cc', + 'analysis_graph.cc', 'async_midi_port.cc', 'audio_backend.cc', 'audio_buffer.cc', |