115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
/*
|
|
* Copyright (C) 2015 Robin Gareus <robin@gareus.org>
|
|
* Copyright (C) 2015-2017 Paul Davis <paul@linuxaudiosystems.com>
|
|
*
|
|
* 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 <cmath>
|
|
#include <cstring>
|
|
|
|
#include "ardour/ebur128_analysis.h"
|
|
|
|
#include "pbd/i18n.h"
|
|
|
|
using namespace Vamp;
|
|
using namespace ARDOUR;
|
|
using namespace std;
|
|
|
|
/* need a static initializer function for this */
|
|
|
|
EBUr128Analysis::EBUr128Analysis (float sr)
|
|
: AudioAnalyser (sr, X_("libardourvampplugins:ebur128"))
|
|
, _loudness (0)
|
|
, _loudness_range (0)
|
|
{
|
|
}
|
|
|
|
EBUr128Analysis::~EBUr128Analysis()
|
|
{
|
|
}
|
|
|
|
int
|
|
EBUr128Analysis::run (AudioReadable* src)
|
|
{
|
|
int ret = -1;
|
|
bool done = false;
|
|
samplecnt_t len = src->readable_length_samples();
|
|
samplepos_t pos = 0;
|
|
uint32_t n_channels = src->n_channels();
|
|
Plugin::FeatureSet features;
|
|
|
|
plugin->reset ();
|
|
if (!plugin->initialise (n_channels, stepsize, bufsize)) {
|
|
return -1;
|
|
}
|
|
|
|
float** bufs = (float**) malloc(n_channels * sizeof(float*));
|
|
for (uint32_t c = 0; c < n_channels; ++c) {
|
|
bufs[c] = (float*) malloc(bufsize * sizeof(float));
|
|
}
|
|
|
|
while (!done) {
|
|
samplecnt_t to_read;
|
|
to_read = min ((len - pos), (samplecnt_t) bufsize);
|
|
|
|
for (uint32_t c = 0; c < n_channels; ++c) {
|
|
if (src->read (bufs[c], pos, to_read, c) != to_read) {
|
|
goto out;
|
|
}
|
|
/* zero fill buffer if necessary */
|
|
if (to_read != bufsize) {
|
|
memset (bufs[c] + to_read, 0, (bufsize - to_read) * sizeof (float));
|
|
}
|
|
}
|
|
|
|
plugin->process (bufs, RealTime::fromSeconds ((double) pos / sample_rate));
|
|
|
|
pos += min (stepsize, to_read);
|
|
|
|
if (pos >= len) {
|
|
done = true;
|
|
}
|
|
}
|
|
|
|
features = plugin->getRemainingFeatures ();
|
|
|
|
if (use_features (features, 0)) {
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
for (uint32_t c = 0; c < n_channels; ++c) {
|
|
free (bufs[c]);
|
|
}
|
|
free (bufs);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
EBUr128Analysis::use_features (Plugin::FeatureSet& features, ostream* out)
|
|
{
|
|
if (features.empty() || features.size() != 2) {
|
|
return 0;
|
|
}
|
|
_loudness = features[0][0].values[0];
|
|
_loudness_range = features[1][0].values[0];
|
|
|
|
return 0;
|
|
}
|