#include "analyse_audio_job.h"
#include "job_manager.h"
#include "film.h"
+#include "exceptions.h"
+#include "config.h"
+
+#include "i18n.h"
using std::string;
+using std::vector;
using boost::shared_ptr;
using boost::lexical_cast;
using boost::dynamic_pointer_cast;
int const AudioContentProperty::AUDIO_DELAY = 204;
int const AudioContentProperty::AUDIO_MAPPING = 205;
-AudioContent::AudioContent (shared_ptr<const Film> f, Time s)
+AudioContent::AudioContent (shared_ptr<const Film> f, DCPTime s)
: Content (f, s)
, _audio_gain (0)
- , _audio_delay (0)
+ , _audio_delay (Config::instance()->default_audio_delay ())
{
}
AudioContent::AudioContent (shared_ptr<const Film> f, boost::filesystem::path p)
: Content (f, p)
, _audio_gain (0)
- , _audio_delay (0)
+ , _audio_delay (Config::instance()->default_audio_delay ())
{
}
AudioContent::AudioContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
: Content (f, node)
{
+ LocaleGuard lg;
+
_audio_gain = node->number_child<float> ("AudioGain");
_audio_delay = node->number_child<int> ("AudioDelay");
}
+AudioContent::AudioContent (shared_ptr<const Film> f, vector<shared_ptr<Content> > c)
+ : Content (f, c)
+{
+ shared_ptr<AudioContent> ref = dynamic_pointer_cast<AudioContent> (c[0]);
+ assert (ref);
+
+ for (size_t i = 0; i < c.size(); ++i) {
+ shared_ptr<AudioContent> ac = dynamic_pointer_cast<AudioContent> (c[i]);
+
+ if (ac->audio_gain() != ref->audio_gain()) {
+ throw JoinError (_("Content to be joined must have the same audio gain."));
+ }
+
+ if (ac->audio_delay() != ref->audio_delay()) {
+ throw JoinError (_("Content to be joined must have the same audio delay."));
+ }
+ }
+
+ _audio_gain = ref->audio_gain ();
+ _audio_delay = ref->audio_delay ();
+}
+
void
AudioContent::as_xml (xmlpp::Node* node) const
{
+ LocaleGuard lg;
+
boost::mutex::scoped_lock lm (_mutex);
node->add_child("AudioGain")->add_child_text (lexical_cast<string> (_audio_gain));
node->add_child("AudioDelay")->add_child_text (lexical_cast<string> (_audio_delay));
signal_changed (AudioContentProperty::AUDIO_DELAY);
}
-void
+boost::signals2::connection
AudioContent::analyse_audio (boost::function<void()> finished)
{
shared_ptr<const Film> film = _film.lock ();
- if (!film) {
- return;
- }
+ assert (film);
shared_ptr<AnalyseAudioJob> job (new AnalyseAudioJob (film, dynamic_pointer_cast<AudioContent> (shared_from_this())));
- job->Finished.connect (finished);
+ boost::signals2::connection c = job->Finished.connect (finished);
JobManager::instance()->add (job);
+
+ return c;
}
boost::filesystem::path
{
return String::compose ("audio: channels %1, length %2, raw rate %3, out rate %4", audio_channels(), audio_length(), content_audio_frame_rate(), output_audio_frame_rate());
}
+
+/** Note: this is not particularly fast, as the FrameRateChange lookup
+ * is not very intelligent.
+ *
+ * @param t Some duration to convert.
+ * @param at The time within the DCP to get the active frame rate change from; i.e. a point at which
+ * the `controlling' video content is active.
+ */
+AudioContent::Frame
+AudioContent::time_to_content_audio_frames (DCPTime t, DCPTime at) const
+{
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
+ /* Consider the case where we're running a 25fps video at 24fps (i.e. slow)
+ Our audio is at 44.1kHz. We will resample it to 48000 * 25 / 24 and then
+ run it at 48kHz (i.e. slow, to match).
+
+ After 1 second, we'll have run the equivalent of 44.1kHz * 24 / 25 samples
+ in the source.
+ */
+
+ return rint (t * content_audio_frame_rate() * film->active_frame_rate_change(at).speed_up / TIME_HZ);
+}