X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Ffilm_viewer.cc;h=0bb582c66dffe8d6b46ca649eee103f20c53dc5d;hb=fb771f2613cd3e7f43bf613d592d6937a1017f2d;hp=a1cc5dfc4bd37dd1751523895291005069975909;hpb=de55fefe3f977a3552e95400c0e9f5183c14a181;p=dcpomatic.git diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc index a1cc5dfc4..0bb582c66 100644 --- a/src/wx/film_viewer.cc +++ b/src/wx/film_viewer.cc @@ -1,19 +1,20 @@ /* - Copyright (C) 2012-2014 Carl Hetherington + Copyright (C) 2012-2016 Carl Hetherington - This program is free software; you can redistribute it and/or modify + This file is part of DCP-o-matic. + + DCP-o-matic 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, + DCP-o-matic 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., 675 Mass Ave, Cambridge, MA 02139, USA. + along with DCP-o-matic. If not, see . */ @@ -21,6 +22,10 @@ * @brief A wx widget to view a preview of a Film. */ +#include "film_viewer.h" +#include "playhead_to_timecode_dialog.h" +#include "playhead_to_frame_dialog.h" +#include "wx_util.h" #include "lib/film.h" #include "lib/ratio.h" #include "lib/util.h" @@ -34,9 +39,12 @@ #include "lib/video_content.h" #include "lib/video_decoder.h" #include "lib/timer.h" +#include "lib/butler.h" #include "lib/log.h" -#include "film_viewer.h" -#include "wx_util.h" +#include "lib/config.h" +extern "C" { +#include +} #include #include #include @@ -54,32 +62,62 @@ using std::exception; using boost::shared_ptr; using boost::dynamic_pointer_cast; using boost::weak_ptr; +using boost::optional; using dcp::Size; -FilmViewer::FilmViewer (wxWindow* p) +static +int +rtaudio_callback (void* out, void *, unsigned int frames, double, RtAudioStreamStatus, void* data) +{ + return reinterpret_cast(data)->audio_callback (out, frames); +} + +FilmViewer::FilmViewer (wxWindow* p, bool outline_content, bool jump_to_selected) : wxPanel (p) , _panel (new wxPanel (this)) - , _outline_content (new wxCheckBox (this, wxID_ANY, _("Outline content"))) + , _outline_content (0) + , _left_eye (new wxRadioButton (this, wxID_ANY, _("Left eye"), wxDefaultPosition, wxDefaultSize, wxRB_GROUP)) + , _right_eye (new wxRadioButton (this, wxID_ANY, _("Right eye"))) + , _jump_to_selected (0) , _slider (new wxSlider (this, wxID_ANY, 0, 0, 4096)) , _back_button (new wxButton (this, wxID_ANY, wxT("<"))) , _forward_button (new wxButton (this, wxID_ANY, wxT(">"))) , _frame_number (new wxStaticText (this, wxID_ANY, wxT(""))) , _timecode (new wxStaticText (this, wxID_ANY, wxT(""))) , _play_button (new wxToggleButton (this, wxID_ANY, _("Play"))) - , _last_get_accurate (true) + , _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) + , _dropped (0) { #ifndef __WXOSX__ _panel->SetDoubleBuffered (true); #endif - + _panel->SetBackgroundStyle (wxBG_STYLE_PAINT); - + _v_sizer = new wxBoxSizer (wxVERTICAL); SetSizer (_v_sizer); _v_sizer->Add (_panel, 1, wxEXPAND); - _v_sizer->Add (_outline_content, 0, wxALL, DCPOMATIC_SIZER_GAP); + wxBoxSizer* view_options = new wxBoxSizer (wxHORIZONTAL); + if (outline_content) { + _outline_content = new wxCheckBox (this, wxID_ANY, _("Outline content")); + view_options->Add (_outline_content, 0, wxRIGHT, DCPOMATIC_SIZER_GAP); + } + view_options->Add (_left_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP); + view_options->Add (_right_eye, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP); + if (jump_to_selected) { + _jump_to_selected = new wxCheckBox (this, wxID_ANY, _("Jump to selected content")); + view_options->Add (_jump_to_selected, 0, wxLEFT | wxRIGHT, DCPOMATIC_SIZER_GAP); + } + _v_sizer->Add (view_options, 0, wxALL, DCPOMATIC_SIZER_GAP); wxBoxSizer* h_sizer = new wxBoxSizer (wxHORIZONTAL); @@ -99,63 +137,131 @@ FilmViewer::FilmViewer (wxWindow* p) _back_button->SetMinSize (wxSize (32, -1)); _forward_button->SetMinSize (wxSize (32, -1)); - _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this)); - _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1)); - _outline_content->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&FilmViewer::refresh_panel, this)); - _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this)); - _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this)); - _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this)); - _play_button->Bind (wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, boost::bind (&FilmViewer::play_clicked, this)); - _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this)); - _back_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::back_clicked, this)); - _forward_button->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&FilmViewer::forward_clicked, this)); + _panel->Bind (wxEVT_PAINT, boost::bind (&FilmViewer::paint_panel, this)); + _panel->Bind (wxEVT_SIZE, boost::bind (&FilmViewer::panel_sized, this, _1)); + if (_outline_content) { + _outline_content->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::refresh_panel, this)); + } + _left_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::refresh, this)); + _right_eye->Bind (wxEVT_RADIOBUTTON, boost::bind (&FilmViewer::refresh, this)); + _slider->Bind (wxEVT_SCROLL_THUMBTRACK, boost::bind (&FilmViewer::slider_moved, this, false)); + _slider->Bind (wxEVT_SCROLL_PAGEUP, boost::bind (&FilmViewer::slider_moved, this, false)); + _slider->Bind (wxEVT_SCROLL_PAGEDOWN, boost::bind (&FilmViewer::slider_moved, this, false)); + _slider->Bind (wxEVT_SCROLL_CHANGED, boost::bind (&FilmViewer::slider_moved, this, true)); + _play_button->Bind (wxEVT_TOGGLEBUTTON, boost::bind (&FilmViewer::play_clicked, this)); + _timer.Bind (wxEVT_TIMER, boost::bind (&FilmViewer::timer, this)); + _back_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::back_clicked, this, _1)); + _forward_button->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::forward_clicked, this, _1)); + _frame_number->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::frame_number_clicked, this)); + _timecode->Bind (wxEVT_LEFT_DOWN, boost::bind (&FilmViewer::timecode_clicked, this)); + if (_jump_to_selected) { + _jump_to_selected->Bind (wxEVT_CHECKBOX, boost::bind (&FilmViewer::jump_to_selected_clicked, this)); + _jump_to_selected->SetValue (Config::instance()->jump_to_selected ()); + } set_film (shared_ptr ()); - + JobManager::instance()->ActiveJobsChanged.connect ( - bind (&FilmViewer::active_jobs_changed, this, _1) + bind (&FilmViewer::active_jobs_changed, this, _2) ); setup_sensitivity (); + + _config_changed_connection = Config::instance()->Changed.connect (bind (&FilmViewer::config_changed, this, _1)); + config_changed (Config::SOUND_OUTPUT); +} + +FilmViewer::~FilmViewer () +{ + stop (); } void -FilmViewer::set_film (shared_ptr f) +FilmViewer::set_film (shared_ptr film) { - if (_film == f) { + if (_film == film) { return; } - _film = f; + _film = film; _frame.reset (); - - _slider->SetValue (0); - set_position_text (); - + + update_position_slider (); + update_position_label (); + if (!_film) { return; } try { - _player = f->make_player (); + _player.reset (new Player (_film, _film->playlist ())); + _player->set_fast (); + if (_dcp_decode_reduction) { + _player->set_dcp_decode_reduction (_dcp_decode_reduction); + } } catch (bad_alloc) { error_dialog (this, _("There is not enough free memory to do that.")); _film.reset (); return; } - - _film_connection = _film->Changed.connect (boost::bind (&FilmViewer::film_changed, this, _1)); - _player->set_approximate_size (); - _player_connection = _player->Changed.connect (boost::bind (&FilmViewer::player_changed, this, _1)); + /* Always burn in subtitles, even if content is set not to, otherwise we won't see them + in the preview. + */ + _player->set_always_burn_subtitles (true); + _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 (); - get (_position, _last_get_accurate); + refresh (); setup_sensitivity (); } +void +FilmViewer::recreate_butler () +{ + bool const was_running = stop (); + _butler.reset (); + + if (!_film) { + return; + } + + 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 (_player, _film->log(), map, _audio_channels)); + if (!Config::instance()->sound() && !_audio.isStreamOpen()) { + _butler->disable_audio (); + } + + if (was_running) { + start (); + } +} + void FilmViewer::refresh_panel () { @@ -164,72 +270,90 @@ FilmViewer::refresh_panel () } void -FilmViewer::get (DCPTime p, bool accurate) +FilmViewer::get () { - if (!_player) { + DCPOMATIC_ASSERT (_butler); + + pair, 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)) + ); + + _butler->rethrow (); + + if (!video.first) { + _frame.reset (); + refresh_panel (); return; } - list > pvf; - try { - pvf = _player->get_video (p, accurate); - } catch (exception& e) { - error_dialog (this, wxString::Format (_("Could not get video for view (%s)"), std_to_wx(e.what()).data())); + if (_playing && (time() - video.second) > one_video_frame()) { + /* Too late; just drop this frame before we try to get its image (which will be the time-consuming + part if this frame is J2K). + */ + _video_position = video.second; + ++_dropped; + return; } - - if (!pvf.empty ()) { - try { - _frame = pvf.front()->image (PIX_FMT_RGB24, true, boost::bind (&Log::dcp_log, _film->log().get(), _1, _2)); - dcp::YUVToRGB yuv_to_rgb = dcp::YUV_TO_RGB_REC601; - if (pvf.front()->colour_conversion()) { - yuv_to_rgb = pvf.front()->colour_conversion().get().yuv_to_rgb(); - } - - _frame = _frame->scale (_frame->size(), yuv_to_rgb, PIX_FMT_RGB24, false); - _position = pvf.front()->time (); - _inter_position = pvf.front()->inter_position (); - _inter_size = pvf.front()->inter_size (); - } catch (dcp::DCPReadError& e) { - /* This can happen on the following sequence of events: - * - load encrypted DCP - * - add KDM - * - DCP is examined again, which sets its "playable" flag to 1 - * - as a side effect of the exam, the viewer is updated using the old pieces - * - the DCPDecoder in the old piece gives us an encrypted frame - * - then, the pieces are re-made (but too late). - * - * I hope there's a better way to handle this ... - */ - _frame.reset (); - _position = p; - } - } else { - _frame.reset (); - _position = p; - } + /* In an ideal world, what we would do here is: + * + * 1. convert to XYZ exactly as we do in the DCP creation path. + * 2. convert back to RGB for the preview display, compensating + * for the monitor etc. etc. + * + * but this is inefficient if the source is RGB. Since we don't + * (currently) care too much about the precise accuracy of the preview's + * colour mapping (and we care more about its speed) we try to short- + * circuit this "ideal" situation in some cases. + * + * The content's specified colour conversion indicates the colourspace + * which the content is in (according to the user). + * + * PlayerVideo::image (bound to PlayerVideo::always_rgb) will take the source + * image and convert it (from whatever the user has said it is) to RGB. + */ + + _frame = video.first->image ( + bind (&Log::dcp_log, _film->log().get(), _1, _2), + bind (&PlayerVideo::always_rgb, _1), + false, true + ); - set_position_text (); - refresh_panel (); + ImageChanged (video.first); + + _video_position = video.second; + _inter_position = video.first->inter_position (); + _inter_size = video.first->inter_size (); - _last_get_accurate = accurate; + refresh_panel (); } void FilmViewer::timer () { - get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true); + if (!_film || !_playing) { + return; + } - DCPTime const len = _film->length (); + get (); + update_position_label (); + update_position_slider (); + DCPTime const next = _video_position + one_video_frame(); - if (len.get ()) { - int const new_slider_position = 4096 * _position.get() / len.get(); - if (new_slider_position != _slider->GetValue()) { - _slider->SetValue (new_slider_position); - } + if (next >= _film->length()) { + stop (); } -} + _timer.Start (max ((next.seconds() - time().seconds()) * 1000, 1.0), wxTIMER_ONE_SHOT); + + if (_butler) { + _butler->rethrow (); + } +} void FilmViewer::paint_panel () @@ -261,7 +385,7 @@ FilmViewer::paint_panel () dc.DrawRectangle (0, _out_size.height, _panel_size.width, _panel_size.height - _out_size.height); } - if (_outline_content->GetValue ()) { + if (_outline_content && _outline_content->GetValue ()) { wxPen p (wxColour (255, 0, 0), 2); dc.SetPen (p); dc.SetBrush (*wxTRANSPARENT_BRUSH); @@ -270,18 +394,23 @@ FilmViewer::paint_panel () } void -FilmViewer::slider_moved () +FilmViewer::slider_moved (bool update_slider) { if (!_film) { return; } + DCPTime t (_slider->GetValue() * _film->length().get() / 4096); /* Ensure that we hit the end of the film at the end of the slider */ if (t >= _film->length ()) { - t = _film->length() - DCPTime::from_frames (1, _film->video_frame_rate ()); + t = _film->length() - one_video_frame(); + } + seek (t, false); + update_position_label (); + if (update_slider) { + update_position_slider (); } - get (t, false); } void @@ -291,42 +420,37 @@ FilmViewer::panel_sized (wxSizeEvent& ev) _panel_size.height = ev.GetSize().GetHeight(); calculate_sizes (); - get (_position, _last_get_accurate); + refresh (); + update_position_label (); + update_position_slider (); } void FilmViewer::calculate_sizes () { - if (!_film || !_player) { + if (!_film) { return; } Ratio const * container = _film->container (); - + float const panel_ratio = _panel_size.ratio (); float const film_ratio = container ? container->ratio () : 1.78; - + if (panel_ratio < film_ratio) { /* panel is less widscreen than the film; clamp width */ _out_size.width = _panel_size.width; - _out_size.height = rint (_out_size.width / film_ratio); + _out_size.height = lrintf (_out_size.width / film_ratio); } else { /* panel is more widescreen than the film; clamp height */ _out_size.height = _panel_size.height; - _out_size.width = rint (_out_size.height * film_ratio); + _out_size.width = lrintf (_out_size.height * film_ratio); } /* Catch silly values */ _out_size.width = max (64, _out_size.width); _out_size.height = max (64, _out_size.height); - /* The player will round its image size down to the next lowest 4 pixels - to speed up its scale, so do similar here to avoid black borders - around things. This is a bit of a hack. - */ - _out_size.width &= ~3; - _out_size.height &= ~3; - _player->set_video_container_size (_out_size); } @@ -342,73 +466,130 @@ FilmViewer::check_play_state () if (!_film || _film->video_frame_rate() == 0) { return; } - + if (_play_button->GetValue()) { - _timer.Start (1000 / _film->video_frame_rate()); + start (); } else { - _timer.Stop (); + stop (); } } void -FilmViewer::set_position_text () +FilmViewer::start () +{ + if (_audio.isStreamOpen()) { + _audio.setStreamTime (_video_position.seconds()); + _audio.startStream (); + } + + _playing = true; + _dropped = 0; + timer (); +} + +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 +FilmViewer::update_position_slider () +{ + if (!_film) { + _slider->SetValue (0); + return; + } + + DCPTime const len = _film->length (); + + if (len.get ()) { + int const new_slider_position = 4096 * _video_position.get() / len.get(); + if (new_slider_position != _slider->GetValue()) { + _slider->SetValue (new_slider_position); + } + } +} + +void +FilmViewer::update_position_label () { if (!_film) { _frame_number->SetLabel ("0"); _timecode->SetLabel ("0:0:0.0"); return; } - + 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("%d"), int (rint (_position.seconds() * fps)) + 1)); - - double w = _position.seconds (); - int const h = (w / 3600); - w -= h * 3600; - int const m = (w / 60); - w -= m * 60; - int const s = floor (w); - w -= s; - int const f = rint (w * fps); - _timecode->SetLabel (wxString::Format (wxT("%02d:%02d:%02d.%02d"), h, m, s, f)); + _frame_number->SetLabel (wxString::Format (wxT("%ld"), lrint (_video_position.seconds() * fps) + 1)); + _timecode->SetLabel (time_to_timecode (_video_position, fps)); } void -FilmViewer::active_jobs_changed (bool a) +FilmViewer::active_jobs_changed (optional j) { - if (a) { - list > jobs = JobManager::instance()->get (); - list >::iterator i = jobs.begin (); - while (i != jobs.end() && boost::dynamic_pointer_cast (*i) == 0) { - ++i; - } - - if (i == jobs.end() || (*i)->finished()) { - /* no examine content job running, so we're ok to use the viewer */ - a = false; - } + /* examine content is the only job which stops the viewer working */ + bool const a = !j || *j != "examine_content"; + _slider->Enable (a); + _play_button->Enable (a); +} + +DCPTime +FilmViewer::nudge_amount (wxMouseEvent& ev) +{ + DCPTime amount = one_video_frame (); + + if (ev.ShiftDown() && !ev.ControlDown()) { + amount = DCPTime::from_seconds (1); + } else if (!ev.ShiftDown() && ev.ControlDown()) { + amount = DCPTime::from_seconds (10); + } else if (ev.ShiftDown() && ev.ControlDown()) { + amount = DCPTime::from_seconds (60); } - - _slider->Enable (!a); - _play_button->Enable (!a); + + return amount; } void -FilmViewer::back_clicked () +FilmViewer::go_to (DCPTime t) { - DCPTime p = _position - DCPTime::from_frames (1, _film->video_frame_rate ()); - if (p < DCPTime ()) { - p = DCPTime (); + if (t < DCPTime ()) { + t = DCPTime (); + } + + if (t >= _film->length ()) { + t = _film->length (); } - get (p, true); + seek (t, true); + update_position_label (); + update_position_slider (); } void -FilmViewer::forward_clicked () +FilmViewer::back_clicked (wxMouseEvent& ev) { - get (_position + DCPTime::from_frames (1, _film->video_frame_rate ()), true); + go_to (_video_position - nudge_amount (ev)); + ev.Skip (); +} + +void +FilmViewer::forward_clicked (wxMouseEvent& ev) +{ + go_to (_video_position + nudge_amount (ev)); + ev.Skip (); } void @@ -418,28 +599,228 @@ FilmViewer::player_changed (bool frequent) return; } + if (_coalesce_player_changes) { + _pending_player_change = true; + return; + } + calculate_sizes (); - get (_position, _last_get_accurate); + refresh (); + update_position_label (); + update_position_slider (); } void FilmViewer::setup_sensitivity () { bool const c = _film && !_film->content().empty (); - + _slider->Enable (c); _back_button->Enable (c); _forward_button->Enable (c); _play_button->Enable (c); - _outline_content->Enable (c); + if (_outline_content) { + _outline_content->Enable (c); + } _frame_number->Enable (c); _timecode->Enable (c); + if (_jump_to_selected) { + _jump_to_selected->Enable (c); + } + + _left_eye->Enable (c && _film->three_d ()); + _right_eye->Enable (c && _film->three_d ()); } void FilmViewer::film_changed (Film::Property p) { - if (p == Film::CONTENT) { + if (p == Film::CONTENT || p == Film::THREE_D) { setup_sensitivity (); } } + +/** Re-get the current frame */ +void +FilmViewer::refresh () +{ + seek (_video_position, _last_seek_accurate); +} + +void +FilmViewer::set_position (DCPTime p) +{ + _video_position = p; + seek (p, true); + update_position_label (); + update_position_slider (); +} + +void +FilmViewer::set_coalesce_player_changes (bool c) +{ + _coalesce_player_changes = c; + + if (c) { + _pending_player_change = false; + } else { + if (_pending_player_change) { + player_changed (false); + } + } +} + +void +FilmViewer::timecode_clicked () +{ + PlayheadToTimecodeDialog* dialog = new PlayheadToTimecodeDialog (this, _film->video_frame_rate ()); + if (dialog->ShowModal() == wxID_OK) { + go_to (dialog->get ()); + } + dialog->Destroy (); +} + +void +FilmViewer::frame_number_clicked () +{ + PlayheadToFrameDialog* dialog = new PlayheadToFrameDialog (this, _film->video_frame_rate ()); + if (dialog->ShowModal() == wxID_OK) { + go_to (dialog->get ()); + } + dialog->Destroy (); +} + +void +FilmViewer::jump_to_selected_clicked () +{ + Config::instance()->set_jump_to_selected (_jump_to_selected->GetValue ()); +} + +void +FilmViewer::seek (DCPTime t, bool accurate) +{ + if (!_butler) { + return; + } + + bool const was_running = stop (); + + _butler->seek (t, accurate); + _last_seek_accurate = accurate; + get (); + + if (was_running) { + start (); + } +} + +void +FilmViewer::config_changed (Config::Property p) +{ + if (p != Config::SOUND && p != Config::SOUND_OUTPUT) { + return; + } + + if (_audio.isStreamOpen ()) { + _audio.closeStream (); + } + + if (Config::instance()->sound()) { + 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; + + 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()) + ); + } + recreate_butler (); + + } else { + _audio_channels = 0; + recreate_butler (); + } +} + +DCPTime +FilmViewer::time () const +{ + if (_audio.isStreamRunning ()) { + return DCPTime::from_seconds (const_cast(&_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 (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 (_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(); +} + +void +FilmViewer::set_dcp_decode_reduction (optional reduction) +{ + _dcp_decode_reduction = reduction; + if (_player) { + _player->set_dcp_decode_reduction (reduction); + } +} + +DCPTime +FilmViewer::one_video_frame () const +{ + return DCPTime::from_frames (1, _film->video_frame_rate()); +}