, _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
{
int64_t const len = _playlist->length().frames_round (_film->audio_frame_rate());
_samples_per_point = max (int64_t (1), len / _num_points);
- _current.resize (_film->audio_channels ());
+ delete[] _current;
+ _current = new AudioPoint[_film->audio_channels ()];
_analysis.reset (new AudioAnalysis (_film->audio_channels ()));
bool has_any_audio = false;
void
AnalyseAudioJob::analyse (shared_ptr<const AudioBuffers> b)
{
- for (int i = 0; i < b->frames(); ++i) {
- for (int j = 0; j < b->channels(); ++j) {
+ int const frames = b->frames ();
+ int const channels = b->channels ();
+
+ for (int i = 0; i < frames; ++i) {
+ for (int j = 0; j < channels; ++j) {
float s = b->data(j)[i];
- if (fabsf (s) < 10e-7) {
+ 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));
-
- float const as = fabs (s);
-
_current[j][AudioPoint::PEAK] = max (_current[j][AudioPoint::PEAK], as);
if (as > _overall_peak) {
if ((_done % _samples_per_point) == 0) {
_current[j][AudioPoint::RMS] = sqrt (_current[j][AudioPoint::RMS] / _samples_per_point);
_analysis->add_point (j, _current[j]);
-
_current[j] = AudioPoint ();
}
}
{
public:
AnalyseAudioJob (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
+ ~AnalyseAudioJob ();
std::string name () const;
std::string json_name () const;
int64_t _done;
int64_t _samples_per_point;
- std::vector<AudioPoint> _current;
+ AudioPoint* _current;
float _overall_peak;
Frame _overall_peak_frame;