Extract common code out into kdm_for_screen()

[dcpomatic.git] / src / lib / analyse_audio_job.cc

diff --git a/src/lib/analyse_audio_job.cc b/src/lib/analyse_audio_job.cc
index e4a100c4a3fd92265635448538ec4b2f3f894551..e77f83bdedfd8c8b82dd21f8c28d287f2b8b8ab8 100644 (file)
--- a/src/lib/analyse_audio_job.cc
+++ b/src/lib/analyse_audio_job.cc
@@ -30,6 +30,7 @@
 #include "audio_filter_graph.h"
 #include "config.h"
 extern "C" {
+#include <leqm_nrt.h>
 #include <libavutil/channel_layout.h>
 #ifdef DCPOMATIC_HAVE_EBUR128_PATCHED_FFMPEG
 #include <libavfilter/f_ebur128.h>
@@ -47,9 +48,17 @@ using std::min;
 using std::cout;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
+using namespace dcpomatic;
 
 int const AnalyseAudioJob::_num_points = 1024;
 
+static void add_if_required(vector<double>& v, size_t i, double db)
+{
+       if (v.size() > i) {
+               v[i] = pow(10, db / 20);
+       }
+}
+
 /** @param from_zero true to analyse audio from time 0 in the playlist, otherwise begin at Playlist::start */
 AnalyseAudioJob::AnalyseAudioJob (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist, bool from_zero)
        : Job (film)
@@ -78,10 +87,36 @@ AnalyseAudioJob::AnalyseAudioJob (shared_ptr<const Film> film, shared_ptr<const
        if (!_from_zero) {
                _start = _playlist->start().get_value_or(DCPTime());
        }
+
+       /* XXX: is this right?  Especially for more than 5.1? */
+       vector<double> channel_corrections(film->audio_channels(), 1);
+       add_if_required (channel_corrections,  4,   -3); // Ls
+       add_if_required (channel_corrections,  5,   -3); // Rs
+       add_if_required (channel_corrections,  6, -144); // HI
+       add_if_required (channel_corrections,  7, -144); // VI
+       add_if_required (channel_corrections,  8,   -3); // Lc
+       add_if_required (channel_corrections,  9,   -3); // Rc
+       add_if_required (channel_corrections, 10,   -3); // Lc
+       add_if_required (channel_corrections, 11,   -3); // Rc
+       add_if_required (channel_corrections, 12, -144); // DBox
+       add_if_required (channel_corrections, 13, -144); // Sync
+       add_if_required (channel_corrections, 14, -144); // Sign Language
+       add_if_required (channel_corrections, 15, -144); // Unused
+
+       _leqm.reset(new leqm_nrt::Calculator(
+               film->audio_channels(),
+               film->audio_frame_rate(),
+               24,
+               channel_corrections,
+               850, // suggested by leqm_nrt CLI source
+               64,  // suggested by leqm_nrt CLI source
+               boost::thread::hardware_concurrency()
+               ));
 }
 
 AnalyseAudioJob::~AnalyseAudioJob ()
 {
+       stop_thread ();
        BOOST_FOREACH (Filter const * i, _filters) {
                delete const_cast<Filter*> (i);
        }
@@ -105,7 +140,7 @@ AnalyseAudioJob::json_name () const
 void
 AnalyseAudioJob::run ()
 {
-       shared_ptr<Player> player (new Player (_film, _playlist));
+       shared_ptr<Player> player (new Player(_film, _playlist));
        player->set_ignore_video ();
        player->set_ignore_text ();
        player->set_fast ();
@@ -167,6 +202,7 @@ AnalyseAudioJob::run ()
 
        _analysis->set_samples_per_point (_samples_per_point);
        _analysis->set_sample_rate (_film->audio_frame_rate ());
+       _analysis->set_leqm (_leqm->leq_m());
        _analysis->write (_path);
 
        set_progress (1);
@@ -186,11 +222,15 @@ AnalyseAudioJob::analyse (shared_ptr<const AudioBuffers> b, DCPTime time)
 
        int const frames = b->frames ();
        int const channels = b->channels ();
+       vector<double> interleaved(frames * channels);
 
        for (int j = 0; j < channels; ++j) {
                float* data = b->data(j);
                for (int i = 0; i < frames; ++i) {
                        float s = data[i];
+
+                       interleaved[i * channels + j] = s;
+
                        float as = fabsf (s);
                        if (as < 10e-7) {
                                /* We may struggle to serialise and recover inf or -inf, so prevent such
@@ -213,6 +253,8 @@ AnalyseAudioJob::analyse (shared_ptr<const AudioBuffers> b, DCPTime time)
                }
        }
 
+       _leqm->add(interleaved);
+
        _done += frames;
 
        DCPTime const length = _playlist->length (_film);