#include "audio_filter_graph.h"
extern "C" {
#include <libavutil/channel_layout.h>
+#ifdef DCPOMATIC_HAVE_PATCHED_FFMPEG
+#include <libavfilter/f_ebur128.h>
+#endif
}
#include <boost/foreach.hpp>
#include <iostream>
int const AnalyseAudioJob::_num_points = 1024;
-extern "C" {
-/* I added these functions to the FFmpeg that DCP-o-matic is built with, but there isn't an
- existing header file to put the prototype in. Cheat by putting it in here.
-*/
-double* av_ebur128_get_true_peaks (void* context);
-double* av_ebur128_get_sample_peaks (void* context);
-double av_ebur128_get_integrated_loudness(void* context);
-double av_ebur128_get_loudness_range (void* context);
-}
-
AnalyseAudioJob::AnalyseAudioJob (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
: Job (film)
, _playlist (playlist)
, _current (0)
, _sample_peak (0)
, _sample_peak_frame (0)
+#ifdef DCPOMATIC_HAVE_PATCHED_FFMPEG
, _ebur128 (new AudioFilterGraph (film->audio_frame_rate(), av_get_default_channel_layout(film->audio_channels())))
+#endif
{
+#ifdef DCPOMATIC_HAVE_PATCHED_FFMPEG
_filters.push_back (new Filter ("ebur128", "ebur128", "audio", "ebur128=peak=true"));
_ebur128->setup (_filters);
+#endif
}
AnalyseAudioJob::~AnalyseAudioJob ()
DCPTime const block = DCPTime::from_seconds (1.0 / 8);
for (DCPTime t = start; t < length; t += block) {
shared_ptr<const AudioBuffers> audio = player->get_audio (t, block, false);
+#ifdef DCPOMATIC_HAVE_PATCHED_FFMPEG
_ebur128->process (audio);
+#endif
analyse (audio);
set_progress ((t.seconds() - start.seconds()) / (length.seconds() - start.seconds()));
}
_analysis->set_sample_peak (_sample_peak, DCPTime::from_frames (_sample_peak_frame, _film->audio_frame_rate ()));
+#ifdef DCPOMATIC_HAVE_PATCHED_FFMPEG
void* eb = _ebur128->get("Parsed_ebur128_0")->priv;
double true_peak = 0;
for (int i = 0; i < _film->audio_channels(); ++i) {
_analysis->set_true_peak (true_peak);
_analysis->set_integrated_loudness (av_ebur128_get_integrated_loudness(eb));
_analysis->set_loudness_range (av_ebur128_get_loudness_range(eb));
+#endif
if (_playlist->content().size() == 1) {
/* If there was only one piece of content in this analysis we may later need to know what its