/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
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
*/
#include "audio_analysis.h"
+#include "audio_buffers.h"
#include "analyse_audio_job.h"
+#include "audio_content.h"
#include "compose.hpp"
#include "film.h"
-#include "options.h"
-#include "decoder_factory.h"
-#include "audio_decoder.h"
+#include "player.h"
+#include "playlist.h"
+#include <boost/foreach.hpp>
+#include <iostream>
+
+#include "i18n.h"
using std::string;
using std::max;
+using std::min;
+using std::cout;
using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
int const AnalyseAudioJob::_num_points = 1024;
-AnalyseAudioJob::AnalyseAudioJob (shared_ptr<Film> f)
- : Job (f)
- , _done_for_this_point (0)
+AnalyseAudioJob::AnalyseAudioJob (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
+ : Job (film)
+ , _playlist (playlist)
, _done (0)
, _samples_per_point (1)
+ , _current (0)
+ , _overall_peak (0)
+ , _overall_peak_frame (0)
{
}
+AnalyseAudioJob::~AnalyseAudioJob ()
+{
+ delete[] _current;
+}
+
string
AnalyseAudioJob::name () const
{
- return String::compose ("Analyse audio of %1", _film->name());
+ return _("Analyse audio");
+}
+
+string
+AnalyseAudioJob::json_name () const
+{
+ return N_("analyse_audio");
}
void
AnalyseAudioJob::run ()
{
- if (!_film->audio_stream () || !_film->length()) {
- set_progress (1);
- set_state (FINISHED_ERROR);
- return;
+ shared_ptr<Player> player (new Player (_film, _playlist));
+ player->set_ignore_video ();
+ player->set_fast ();
+ player->set_play_referenced ();
+
+ DCPTime const start = _playlist->start().get_value_or (DCPTime ());
+ DCPTime const length = _playlist->length ();
+
+ Frame const len = DCPTime (length - start).frames_round (_film->audio_frame_rate());
+ _samples_per_point = max (int64_t (1), len / _num_points);
+
+ delete[] _current;
+ _current = new AudioPoint[_film->audio_channels ()];
+ _analysis.reset (new AudioAnalysis (_film->audio_channels ()));
+
+ bool has_any_audio = false;
+ BOOST_FOREACH (shared_ptr<Content> c, _playlist->content ()) {
+ if (dynamic_pointer_cast<AudioContent> (c)) {
+ has_any_audio = true;
+ }
}
-
- DecodeOptions options;
- options.decode_video = false;
-
- Decoders decoders = decoder_factory (_film, options);
- assert (decoders.audio);
-
- decoders.audio->set_audio_stream (_film->audio_stream ());
- decoders.audio->Audio.connect (bind (&AnalyseAudioJob::audio, this, _1));
-
- int64_t total_audio_frames = video_frames_to_audio_frames (_film->length().get(), _film->audio_stream()->sample_rate(), _film->frames_per_second());
- _samples_per_point = total_audio_frames / _num_points;
-
- _current.resize (_film->audio_stream()->channels ());
- _analysis.reset (new AudioAnalysis (_film->audio_stream()->channels()));
-
- while (!decoders.audio->pass()) {
- set_progress (float (_done) / total_audio_frames);
+
+ if (has_any_audio) {
+ _done = 0;
+ DCPTime const block = DCPTime::from_seconds (1.0 / 8);
+ for (DCPTime t = start; t < length; t += block) {
+ analyse (player->get_audio (t, block, false));
+ set_progress ((t.seconds() - start.seconds()) / (length.seconds() - start.seconds()));
+ }
}
- _analysis->write (_film->audio_analysis_path ());
-
+ _analysis->set_peak (_overall_peak, DCPTime::from_frames (_overall_peak_frame, _film->audio_frame_rate ()));
+
+ if (_playlist->content().size() == 1) {
+ /* If there was only one piece of content in this analysis we may later need to know what its
+ gain was when we analysed it.
+ */
+ shared_ptr<const AudioContent> ac = dynamic_pointer_cast<const AudioContent> (_playlist->content().front ());
+ DCPOMATIC_ASSERT (ac);
+ _analysis->set_analysis_gain (ac->audio_gain ());
+ }
+
+ _analysis->write (_film->audio_analysis_path (_playlist));
+
set_progress (1);
set_state (FINISHED_OK);
}
void
-AnalyseAudioJob::audio (shared_ptr<AudioBuffers> b)
+AnalyseAudioJob::analyse (shared_ptr<const AudioBuffers> b)
{
- for (int i = 0; i < b->frames(); ++i) {
- for (int j = 0; j < b->channels(); ++j) {
- float s = b->data(j)[i];
- if (fabsf (s) < 10e-7) {
- /* stringstream can't serialise and recover inf or -inf, so prevent such
+ int const frames = b->frames ();
+ int const channels = b->channels ();
+
+ for (int j = 0; j < channels; ++j) {
+ float* data = b->data(j);
+ for (int i = 0; i < frames; ++i) {
+ float s = data[i];
+ float as = fabsf (s);
+ if (as < 10e-7) {
+ /* SafeStringStream can't serialise and recover inf or -inf, so prevent such
values by replacing with this (140dB down) */
- s = 10e-7;
+ s = as = 10e-7;
}
_current[j][AudioPoint::RMS] += pow (s, 2);
- _current[j][AudioPoint::PEAK] = max (_current[j][AudioPoint::PEAK], fabsf (s));
+ _current[j][AudioPoint::PEAK] = max (_current[j][AudioPoint::PEAK], as);
- if (_done_for_this_point == _samples_per_point) {
- _current[j][AudioPoint::RMS] = 20 * log10 (sqrt (_current[j][AudioPoint::RMS] / _samples_per_point));
- _current[j][AudioPoint::PEAK] = 20 * log10 (_current[j][AudioPoint::PEAK]);
-
+ if (as > _overall_peak) {
+ _overall_peak = as;
+ _overall_peak_frame = _done + i;
+ }
+
+ if (((_done + i) % _samples_per_point) == 0) {
+ _current[j][AudioPoint::RMS] = sqrt (_current[j][AudioPoint::RMS] / _samples_per_point);
_analysis->add_point (j, _current[j]);
-
- _done_for_this_point = 0;
_current[j] = AudioPoint ();
}
}
-
- ++_done_for_this_point;
}
- _done += b->frames ();
+ _done += frames;
}
-
projects / dcpomatic.git / blobdiff