using boost::optional;
using dcp::Size;
+static
+int
+rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data)
+{
+ return reinterpret_cast<FilmViewer*>(data)->audio_callback (out, frames);
+}
+
FilmViewer::FilmViewer (wxWindow* p)
: wxPanel (p)
, _panel (new wxPanel (this))
, _coalesce_player_changes (false)
, _pending_player_change (false)
, _last_seek_accurate (true)
+ , _audio (DCPOMATIC_RTAUDIO_API)
+ , _audio_channels (0)
+ , _audio_block_size (1024)
+ , _playing (false)
+ , _latency_history_count (0)
{
#ifndef __WXOSX__
_panel->SetDoubleBuffered (true);
);
setup_sensitivity ();
+
+ _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1));
+ config_changed (Config::SOUND_OUTPUT);
+}
+
+FilmViewer::~FilmViewer ()
+{
+ stop ();
}
void
in the preview.
*/
_player->set_always_burn_subtitles (true);
- _player->set_ignore_audio ();
_player->set_play_referenced ();
_film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1));
_player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1));
+ /* Keep about 1 second's worth of history samples */
+ _latency_history_count = _film->audio_frame_rate() / _audio_block_size;
+
recreate_butler ();
calculate_sizes ();
void
FilmViewer::recreate_butler ()
{
+ bool const was_running = stop ();
_butler.reset ();
if (!_film) {
return;
}
- _butler.reset (new Butler (_film, _player));
+ AudioMapping map = AudioMapping (_film->audio_channels(), _audio_channels);
+
+ if (_audio_channels != 2 || _film->audio_channels() < 3) {
+ for (int i = 0; i < min (_film->audio_channels(), _audio_channels); ++i) {
+ map.set (i, i, 1);
+ }
+ } else {
+ /* Special case: stereo output, at least 3 channel input, map L+R to L/R and
+ C to both, all 3dB down.
+ */
+ map.set (0, 0, 1 / sqrt(2)); // L -> L
+ map.set (1, 1, 1 / sqrt(2)); // R -> R
+ map.set (2, 0, 1 / sqrt(2)); // C -> L
+ map.set (2, 1, 1 / sqrt(2)); // C -> R
+ }
+
+ _butler.reset (new Butler (_film, _player, map, _audio_channels));
+
+ if (was_running) {
+ start ();
+ }
}
void
pair<shared_ptr<PlayerVideo>, DCPTime> video;
do {
video = _butler->get_video ();
- } while (_film->three_d() && ((_left_eye->GetValue() && video.first->eyes() == EYES_RIGHT) || (_right_eye->GetValue() && video.first->eyes() == EYES_LEFT)));
+ } while (
+ _film->three_d() &&
+ ((_left_eye->GetValue() && video.first->eyes() == EYES_RIGHT) || (_right_eye->GetValue() && video.first->eyes() == EYES_LEFT))
+ );
if (!video.first) {
+ _frame.reset ();
+ refresh_panel ();
return;
}
ImageChanged (video.first);
- _position = video.second;
+ _video_position = video.second;
_inter_position = video.first->inter_position ();
_inter_size = video.first->inter_size ();
void
FilmViewer::timer ()
{
- DCPTime const frame = DCPTime::from_frames (1, _film->video_frame_rate ());
+ if (!_film) {
+ return;
+ }
- if ((_position + frame) >= _film->length ()) {
- _play_button->SetValue (false);
- check_play_state ();
- } else {
+ if (_audio.isStreamRunning ()) {
get ();
+ update_position_label ();
+ update_position_slider ();
+ DCPTime const next = _video_position + DCPTime::from_frames (1, _film->video_frame_rate ());
+
+ if (next >= _film->length()) {
+ stop ();
+ }
+
+ _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 0.0), wxTIMER_ONE_SHOT);
}
- update_position_label ();
- update_position_slider ();
+ if (_butler) {
+ _butler->rethrow ();
+ }
}
void
}
if (_play_button->GetValue()) {
- _timer.Start (1000 / _film->video_frame_rate());
+ start ();
} else {
- _timer.Stop ();
+ stop ();
+ }
+}
+
+void
+FilmViewer::start ()
+{
+ if (_audio.isStreamOpen()) {
+ _audio.setStreamTime (_video_position.seconds());
+ _audio.startStream ();
+ }
+
+ _playing = true;
+ _timer.Start (0, wxTIMER_ONE_SHOT);
+}
+
+bool
+FilmViewer::stop ()
+{
+ if (_audio.isStreamRunning()) {
+ /* stop stream and discard any remainig queued samples */
+ _audio.abortStream ();
+ }
+
+ if (!_playing) {
+ return false;
}
+
+ _playing = false;
+ _play_button->SetValue (false);
+ return true;
}
void
DCPTime const len = _film->length ();
if (len.get ()) {
- int const new_slider_position = 4096 * _position.get() / len.get();
+ int const new_slider_position = 4096 * _video_position.get() / len.get();
if (new_slider_position != _slider->GetValue()) {
_slider->SetValue (new_slider_position);
}
double const fps = _film->video_frame_rate ();
/* Count frame number from 1 ... not sure if this is the best idea */
- _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_position.seconds() * fps) + 1));
- _timecode->SetLabel (time_to_timecode (_position, fps));
+ _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_video_position.seconds() * fps) + 1));
+ _timecode->SetLabel (time_to_timecode (_video_position, fps));
}
void
void
FilmViewer::back_clicked (wxMouseEvent& ev)
{
- go_to (_position - nudge_amount (ev));
+ go_to (_video_position - nudge_amount (ev));
ev.Skip ();
}
void
FilmViewer::forward_clicked (wxMouseEvent& ev)
{
- go_to (_position + nudge_amount (ev));
+ go_to (_video_position + nudge_amount (ev));
ev.Skip ();
}
_outline_content->Enable (c);
_frame_number->Enable (c);
_timecode->Enable (c);
+ _jump_to_selected->Enable (c);
_left_eye->Enable (c && _film->three_d ());
_right_eye->Enable (c && _film->three_d ());
void
FilmViewer::refresh ()
{
- seek (_position, _last_seek_accurate);
+ seek (_video_position, _last_seek_accurate);
}
void
FilmViewer::set_position (DCPTime p)
{
- _position = p;
+ _video_position = p;
seek (p, true);
update_position_label ();
update_position_slider ();
_last_seek_accurate = accurate;
get ();
}
+
+void
+FilmViewer::config_changed (Config::Property p)
+{
+ if (p != Config::SOUND_OUTPUT) {
+ return;
+ }
+
+ if (_audio.isStreamOpen ()) {
+ _audio.closeStream ();
+ }
+
+ unsigned int st = 0;
+ if (Config::instance()->sound_output()) {
+ while (st < _audio.getDeviceCount()) {
+ if (_audio.getDeviceInfo(st).name == Config::instance()->sound_output().get()) {
+ break;
+ }
+ ++st;
+ }
+ if (st == _audio.getDeviceCount()) {
+ st = _audio.getDefaultOutputDevice();
+ }
+ } else {
+ st = _audio.getDefaultOutputDevice();
+ }
+
+ _audio_channels = _audio.getDeviceInfo(st).outputChannels;
+ recreate_butler ();
+
+ RtAudio::StreamParameters sp;
+ sp.deviceId = st;
+ sp.nChannels = _audio_channels;
+ sp.firstChannel = 0;
+ try {
+ _audio.openStream (&sp, 0, RTAUDIO_FLOAT32, 48000, &_audio_block_size, &rtaudio_callback, this);
+#ifdef DCPOMATIC_USE_RTERROR
+ } catch (RtError& e) {
+#else
+ } catch (RtAudioError& e) {
+#endif
+ error_dialog (this, wxString::Format (_("Could not set up audio output (%s). There will be no audio during the preview."), e.what()));
+ }
+}
+
+DCPTime
+FilmViewer::time () const
+{
+ if (_audio.isStreamRunning ()) {
+ return DCPTime::from_seconds (const_cast<RtAudio*>(&_audio)->getStreamTime ()) -
+ DCPTime::from_frames (average_latency(), _film->audio_frame_rate());
+ }
+
+ return _video_position;
+}
+
+int
+FilmViewer::audio_callback (void* out_p, unsigned int frames)
+{
+ _butler->get_audio (reinterpret_cast<float*> (out_p), frames);
+
+ boost::mutex::scoped_lock lm (_latency_history_mutex, boost::try_to_lock);
+ if (lm) {
+ _latency_history.push_back (_audio.getStreamLatency ());
+ if (_latency_history.size() > static_cast<size_t> (_latency_history_count)) {
+ _latency_history.pop_front ();
+ }
+ }
+
+ return 0;
+}
+
+Frame
+FilmViewer::average_latency () const
+{
+ boost::mutex::scoped_lock lm (_latency_history_mutex);
+ if (_latency_history.empty()) {
+ return 0;
+ }
+
+ Frame total = 0;
+ BOOST_FOREACH (Frame i, _latency_history) {
+ total += i;
+ }
+
+ return total / _latency_history.size();
+}
projects / dcpomatic.git / blobdiff