Fix some spelling mistakes (mostly in comments).
[dcpomatic.git] / src / tools / dcpomatic_player.cc
index cd941e93557deab2cc53344204f5022fdc88dcd5..90c37d08c726feb29a502585e81a717f3b9a92db 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2017-2019 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2017-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
 
 */
 
-#include "wx/wx_signal_manager.h"
-#include "wx/wx_util.h"
 #include "wx/about_dialog.h"
-#include "wx/report_problem_dialog.h"
 #include "wx/film_viewer.h"
-#include "wx/player_information.h"
-#include "wx/update_dialog.h"
+#include "wx/nag_dialog.h"
 #include "wx/player_config_dialog.h"
-#include "wx/verify_dcp_dialog.h"
+#include "wx/player_information.h"
+#include "wx/player_stress_tester.h"
+#include "wx/playlist_controls.h"
+#include "wx/report_problem_dialog.h"
 #include "wx/standard_controls.h"
-#include "wx/swaroop_controls.h"
+#include "wx/system_information_dialog.h"
 #include "wx/timer_display.h"
-#include "lib/cross.h"
-#include "lib/config.h"
-#include "lib/util.h"
-#include "lib/internet.h"
-#include "lib/update_checker.h"
+#include "wx/update_dialog.h"
+#include "wx/verify_dcp_dialog.h"
+#include "wx/verify_dcp_progress_dialog.h"
+#include "wx/wx_signal_manager.h"
+#include "wx/wx_util.h"
 #include "lib/compose.hpp"
+#include "lib/config.h"
+#include "lib/cross.h"
 #include "lib/dcp_content.h"
-#include "lib/job_manager.h"
-#include "lib/job.h"
-#include "lib/film.h"
-#include "lib/null_log.h"
-#include "lib/video_content.h"
-#include "lib/text_content.h"
-#include "lib/ratio.h"
-#include "lib/verify_dcp_job.h"
 #include "lib/dcp_examiner.h"
-#include "lib/examine_content_job.h"
-#include "lib/server.h"
+#include "lib/dcpomatic_log.h"
 #include "lib/dcpomatic_socket.h"
-#include "lib/scoped_temporary.h"
-#include "lib/monitor_checker.h"
-#include "lib/lock_file_checker.h"
+#include "lib/examine_content_job.h"
 #include "lib/ffmpeg_content.h"
-#include "lib/dcpomatic_log.h"
 #include "lib/file_log.h"
+#include "lib/film.h"
+#include "lib/image.h"
+#include "lib/image_jpeg.h"
+#include "lib/image_png.h"
+#include "lib/internet.h"
+#include "lib/job.h"
+#include "lib/job_manager.h"
+#include "lib/null_log.h"
+#include "lib/player.h"
+#include "lib/player_video.h"
+#include "lib/ratio.h"
+#include "lib/scoped_temporary.h"
+#include "lib/server.h"
+#include "lib/text_content.h"
+#include "lib/update_checker.h"
+#include "lib/util.h"
+#include "lib/verify_dcp_job.h"
+#include "lib/video_content.h"
+#include <dcp/cpl.h>
 #include <dcp/dcp.h>
-#include <dcp/raw_convert.h>
 #include <dcp/exceptions.h>
-#include <wx/wx.h>
-#include <wx/stdpaths.h>
-#include <wx/splash.h>
+#include <dcp/raw_convert.h>
+#include <dcp/search.h>
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
 #include <wx/cmdline.h>
+#include <wx/display.h>
 #include <wx/preferences.h>
 #include <wx/progdlg.h>
-#include <wx/display.h>
-#ifdef __WXOSX__
-#include <ApplicationServices/ApplicationServices.h>
+#include <wx/splash.h>
+#include <wx/stdpaths.h>
+#include <wx/wx.h>
+LIBDCP_ENABLE_WARNINGS
+#ifdef __WXGTK__
+#include <X11/Xlib.h>
 #endif
-#include <boost/bind.hpp>
+#include <boost/algorithm/string.hpp>
+#include <boost/bind/bind.hpp>
 #include <iostream>
 
 #ifdef check
 #undef check
 #endif
 
+
 #define MAX_CPLS 32
 
-using std::string;
+
 using std::cout;
-using std::list;
+using std::dynamic_pointer_cast;
 using std::exception;
+using std::list;
+using std::make_shared;
+using std::shared_ptr;
+using std::string;
 using std::vector;
-using boost::shared_ptr;
-using boost::weak_ptr;
-using boost::scoped_array;
+using std::weak_ptr;
+using boost::bind;
 using boost::optional;
-using boost::dynamic_pointer_cast;
+using boost::scoped_array;
 using boost::thread;
-using boost::bind;
+#if BOOST_VERSION >= 106100
+using namespace boost::placeholders;
+#endif
+using dcp::raw_convert;
 using namespace dcpomatic;
 
+
 enum {
        ID_file_open = 1,
        ID_file_add_ov,
        ID_file_add_kdm,
+       ID_file_save_frame,
        ID_file_history,
        /* Allow spare IDs after _history for the recent files list */
        ID_file_close = 100,
@@ -111,37 +133,37 @@ enum {
        ID_tools_verify,
        ID_tools_check_for_updates,
        ID_tools_timing,
+       ID_tools_system_information,
        /* IDs for shortcuts (with no associated menu item) */
        ID_start_stop,
-       ID_back_frame,
-       ID_forward_frame
+       ID_go_back_frame,
+       ID_go_forward_frame,
+       ID_go_back_small_amount,
+       ID_go_forward_small_amount,
+       ID_go_back_medium_amount,
+       ID_go_forward_medium_amount,
+       ID_go_back_large_amount,
+       ID_go_forward_large_amount,
+       ID_go_to_start,
+       ID_go_to_end
 };
 
 class DOMFrame : public wxFrame
 {
 public:
        DOMFrame ()
-               : wxFrame (0, -1, _("DCP-o-matic Player"))
-               , _dual_screen (0)
-               , _update_news_requested (false)
-               , _info (0)
+               : wxFrame (nullptr, -1, _("DCP-o-matic Player"))
                , _mode (Config::instance()->player_mode())
-               , _config_dialog (0)
-               , _file_menu (0)
-               , _history_items (0)
-               , _history_position (0)
-               , _history_separator (0)
-               , _view_full_screen (0)
-               , _view_dual_screen (0)
+               , _main_sizer (new wxBoxSizer(wxVERTICAL))
        {
-               dcpomatic_log.reset (new NullLog());
+               dcpomatic_log = make_shared<NullLog>();
 
 #if defined(DCPOMATIC_WINDOWS)
                maybe_open_console ();
                cout << "DCP-o-matic Player is starting." << "\n";
 #endif
 
-               wxMenuBar* bar = new wxMenuBar;
+               auto bar = new wxMenuBar;
                setup_menu (bar);
                set_menu_sensitivity ();
                SetMenuBar (bar);
@@ -156,6 +178,7 @@ public:
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_open, this), ID_file_open);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_add_ov, this), ID_file_add_ov);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_add_kdm, this), ID_file_add_kdm);
+               Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_save_frame, this), ID_file_save_frame);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_history, this, _1), ID_file_history, ID_file_history + HISTORY_SIZE);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_close, this), ID_file_close);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::file_exit, this), wxID_EXIT);
@@ -172,112 +195,104 @@ public:
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::tools_verify, this), ID_tools_verify);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::tools_check_for_updates, this), ID_tools_check_for_updates);
                Bind (wxEVT_MENU, boost::bind (&DOMFrame::tools_timing, this), ID_tools_timing);
+               Bind (wxEVT_MENU, boost::bind (&DOMFrame::tools_system_information, this), ID_tools_system_information);
 
                /* Use a panel as the only child of the Frame so that we avoid
                   the dark-grey background on Windows.
                */
                _overall_panel = new wxPanel (this, wxID_ANY);
 
-               _viewer.reset (new FilmViewer (_overall_panel));
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-               SwaroopControls* sc = new SwaroopControls (_overall_panel, _viewer);
-               _controls = sc;
-               sc->ResetFilm.connect (bind(&DOMFrame::reset_film_weak, this, _1));
-#else
-               _controls = new StandardControls (_overall_panel, _viewer, false);
-#endif
+               _viewer = make_shared<FilmViewer>(_overall_panel);
+               if (Config::instance()->player_mode() == Config::PLAYER_MODE_DUAL) {
+                       auto pc = new PlaylistControls (_overall_panel, _viewer);
+                       _controls = pc;
+                       pc->ResetFilm.connect (bind(&DOMFrame::reset_film_weak, this, _1));
+               } else {
+                       _controls = new StandardControls (_overall_panel, _viewer, false);
+               }
                _viewer->set_dcp_decode_reduction (Config::instance()->decode_reduction ());
+               _viewer->set_optimise_for_j2k (true);
                _viewer->PlaybackPermitted.connect (bind(&DOMFrame::playback_permitted, this));
-               _viewer->Started.connect (bind(&DOMFrame::playback_started, this, _1));
-               _viewer->Stopped.connect (bind(&DOMFrame::playback_stopped, this, _1));
+               _viewer->TooManyDropped.connect (bind(&DOMFrame::too_many_frames_dropped, this));
                _info = new PlayerInformation (_overall_panel, _viewer);
                setup_main_sizer (Config::instance()->player_mode());
 #ifdef __WXOSX__
-               int accelerators = 4;
+               int accelerators = 12;
 #else
-               int accelerators = 3;
+               int accelerators = 11;
 #endif
 
-               wxAcceleratorEntry* accel = new wxAcceleratorEntry[accelerators];
-               accel[0].Set(wxACCEL_NORMAL, WXK_SPACE, ID_start_stop);
-               accel[1].Set(wxACCEL_NORMAL, WXK_LEFT, ID_back_frame);
-               accel[2].Set(wxACCEL_NORMAL, WXK_RIGHT, ID_forward_frame);
+               _stress.setup (this, _controls);
+
+               std::vector<wxAcceleratorEntry> accel(accelerators);
+               accel[0].Set(wxACCEL_NORMAL,                WXK_SPACE, ID_start_stop);
+               accel[1].Set(wxACCEL_NORMAL,                WXK_LEFT,  ID_go_back_frame);
+               accel[2].Set(wxACCEL_NORMAL,                WXK_RIGHT, ID_go_forward_frame);
+               accel[3].Set(wxACCEL_SHIFT,                 WXK_LEFT,  ID_go_back_small_amount);
+               accel[4].Set(wxACCEL_SHIFT,                 WXK_RIGHT, ID_go_forward_small_amount);
+               accel[5].Set(wxACCEL_CTRL,                  WXK_LEFT,  ID_go_back_medium_amount);
+               accel[6].Set(wxACCEL_CTRL,                  WXK_RIGHT, ID_go_forward_medium_amount);
+               accel[7].Set(wxACCEL_SHIFT | wxACCEL_CTRL,  WXK_LEFT,  ID_go_back_large_amount);
+               accel[8].Set(wxACCEL_SHIFT | wxACCEL_CTRL,  WXK_RIGHT, ID_go_forward_large_amount);
+               accel[9].Set(wxACCEL_NORMAL,                WXK_HOME,  ID_go_to_start);
+               accel[10].Set(wxACCEL_NORMAL,               WXK_END,   ID_go_to_end);
 #ifdef __WXOSX__
-               accel[3].Set(wxACCEL_CTRL, static_cast<int>('W'), ID_file_close);
+               accel[11].Set(wxACCEL_CTRL, static_cast<int>('W'), ID_file_close);
 #endif
-               wxAcceleratorTable accel_table (accelerators, accel);
+               wxAcceleratorTable accel_table (accelerators, accel.data());
                SetAcceleratorTable (accel_table);
-               delete[] accel;
 
-               Bind (wxEVT_MENU, boost::bind (&DOMFrame::start_stop_pressed, this), ID_start_stop);
-               Bind (wxEVT_MENU, boost::bind (&DOMFrame::back_frame, this), ID_back_frame);
-               Bind (wxEVT_MENU, boost::bind (&DOMFrame::forward_frame, this), ID_forward_frame);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::start_stop_pressed, this), ID_start_stop);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_back_frame, this),      ID_go_back_frame);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_forward_frame, this),   ID_go_forward_frame);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this,   -60), ID_go_back_small_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this,    60), ID_go_forward_small_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this,  -600), ID_go_back_medium_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this,   600), ID_go_forward_medium_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this, -3600), ID_go_back_large_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_seconds,  this,  3600), ID_go_forward_large_amount);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_to_start, this), ID_go_to_start);
+               Bind (wxEVT_MENU, boost::bind(&DOMFrame::go_to_end,   this), ID_go_to_end);
 
                reset_film ();
 
-               UpdateChecker::instance()->StateChanged.connect (boost::bind (&DOMFrame::update_checker_state_changed, this));
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-               MonitorChecker::instance()->StateChanged.connect(boost::bind(&DOMFrame::monitor_checker_state_changed, this));
-               MonitorChecker::instance()->run ();
-               LockFileChecker::instance()->StateChanged.connect(boost::bind(&DOMFrame::lock_checker_state_changed, this));
-               LockFileChecker::instance()->run ();
-#endif
+               UpdateChecker::instance()->StateChanged.connect (boost::bind(&DOMFrame::update_checker_state_changed, this));
                setup_screen ();
 
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-               sc->check_restart ();
-#endif
+               _stress.LoadDCP.connect (boost::bind(&DOMFrame::load_dcp, this, _1));
        }
 
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-       void monitor_checker_state_changed ()
+       ~DOMFrame ()
        {
-               if (!MonitorChecker::instance()->ok()) {
-                       _viewer->stop ();
-                       error_dialog (this, _("The required display devices are not connected correctly."));
-               }
+               /* It's important that this is stopped before our frame starts destroying its children,
+                * otherwise UI elements that it depends on will disappear from under it.
+                */
+               _viewer.reset ();
        }
 
-       void lock_checker_state_changed ()
-       {
-               if (!LockFileChecker::instance()->ok()) {
-                       _viewer->stop ();
-                       error_dialog (this, _("The lock file is not present."));
-               }
-       }
-#endif
-
        void setup_main_sizer (Config::PlayerMode mode)
        {
-               wxSizer* main_sizer = new wxBoxSizer (wxVERTICAL);
+               _main_sizer->Detach (_viewer->panel());
+               _main_sizer->Detach (_controls);
+               _main_sizer->Detach (_info);
                if (mode != Config::PLAYER_MODE_DUAL) {
-                       main_sizer->Add (_viewer->panel(), 1, wxEXPAND | wxALIGN_CENTER_VERTICAL);
+                       _main_sizer->Add (_viewer->panel(), 1, wxEXPAND);
                }
-               main_sizer->Add (_controls, mode == Config::PLAYER_MODE_DUAL ? 1 : 0, wxEXPAND | wxALL, 6);
-               main_sizer->Add (_info, 0, wxEXPAND | wxALL, 6);
-               _overall_panel->SetSizer (main_sizer);
+               _main_sizer->Add (_controls, mode == Config::PLAYER_MODE_DUAL ? 1 : 0, wxEXPAND | wxALL, 6);
+               _main_sizer->Add (_info, 0, wxEXPAND | wxALL, 6);
+               _overall_panel->SetSizer (_main_sizer);
                _overall_panel->Layout ();
        }
 
        bool playback_permitted ()
        {
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-               if (!MonitorChecker::instance()->ok()) {
-                       error_dialog (this, _("The required display devices are not connected correctly."));
-                       return false;
-               }
-               if (!LockFileChecker::instance()->ok()) {
-                       error_dialog (this, _("The lock file is not present."));
-                       return false;
-               }
-#endif
                if (!_film || !Config::instance()->respect_kdm_validity_periods()) {
                        return true;
                }
 
                bool ok = true;
-               BOOST_FOREACH (shared_ptr<Content> i, _film->content()) {
-                       shared_ptr<DCPContent> d = dynamic_pointer_cast<DCPContent>(i);
+               for (auto i: _film->content()) {
+                       auto d = dynamic_pointer_cast<DCPContent>(i);
                        if (d && !d->kdm_timing_window_valid()) {
                                ok = false;
                        }
@@ -290,57 +305,23 @@ public:
                return ok;
        }
 
-       void playback_started (DCPTime time)
-       {
-               /* XXX: this only logs the first piece of content; probably should be each piece? */
-               if (_film->content().empty()) {
-                       return;
-               }
 
-               shared_ptr<DCPContent> dcp = dynamic_pointer_cast<DCPContent>(_film->content().front());
-               if (dcp) {
-                       DCPExaminer ex (dcp);
-                       shared_ptr<dcp::CPL> playing_cpl;
-                       BOOST_FOREACH (shared_ptr<dcp::CPL> i, ex.cpls()) {
-                               if (!dcp->cpl() || i->id() == *dcp->cpl()) {
-                                       playing_cpl = i;
-                               }
-                       }
-                       DCPOMATIC_ASSERT (playing_cpl);
-
-                       _controls->log (
-                               wxString::Format(
-                                       "playback-started %s %s %s",
-                                       time.timecode(_film->video_frame_rate()).c_str(),
-                                       dcp->directories().front().string().c_str(),
-                                       playing_cpl->annotation_text().c_str()
-                                       )
-                               );
-               }
-
-               shared_ptr<FFmpegContent> ffmpeg = dynamic_pointer_cast<FFmpegContent>(_film->content().front());
-               if (ffmpeg) {
-                       _controls->log (
-                               wxString::Format(
-                                       "playback-started %s %s",
-                                       time.timecode(_film->video_frame_rate()).c_str(),
-                                       ffmpeg->path(0).string().c_str()
-                                       )
-                               );
-               }
-       }
-
-       void playback_stopped (DCPTime time)
+       void too_many_frames_dropped ()
        {
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-               try {
-                       boost::filesystem::remove (Config::path("position"));
-               } catch (...) {
-                       /* Never mind */
+               if (!Config::instance()->nagged(Config::NAG_TOO_MANY_DROPPED_FRAMES)) {
+                       _viewer->stop ();
                }
-#endif
 
-               _controls->log (wxString::Format("playback-stopped %s", time.timecode(_film->video_frame_rate()).c_str()));
+               NagDialog::maybe_nag (
+                       this,
+                       Config::NAG_TOO_MANY_DROPPED_FRAMES,
+                       _(wxS("The player is dropping a lot of frames, so playback may not be accurate.\n\n"
+                         "<b>This does not necessarily mean that the DCP you are playing is defective!</b>\n\n"
+                         "You may be able to improve player performance by:\n"
+                         "• choosing 'decode at half resolution' or 'decode at quarter resolution' from the View menu\n"
+                         "• using a more powerful computer.\n"
+                        ))
+                       );
        }
 
        void set_decode_reduction (optional<int> reduction)
@@ -356,23 +337,52 @@ public:
 
                reset_film ();
                try {
-                       shared_ptr<DCPContent> dcp (new DCPContent(dir));
-                       _film->examine_and_add_content (dcp, true);
+                       _stress.set_suspended (true);
+                       // here
+                       auto dcp = make_shared<DCPContent>(dir);
+                       auto job = make_shared<ExamineContentJob>(_film, dcp);
+                       _examine_job_connection = job->Finished.connect(bind(&DOMFrame::add_dcp_to_film, this, weak_ptr<Job>(job), weak_ptr<Content>(dcp)));
+                       JobManager::instance()->add (job);
                        bool const ok = display_progress (_("DCP-o-matic Player"), _("Loading content"));
                        if (!ok || !report_errors_from_last_job(this)) {
                                return;
                        }
-#ifndef DCPOMATIC_VARIANT_SWAROOP
                        Config::instance()->add_to_player_history (dir);
-#endif
-               } catch (dcp::DCPReadError& e) {
+               } catch (ProjectFolderError &) {
+                       error_dialog (
+                               this,
+                               wxString::Format(_("Could not load a DCP from %s"), std_to_wx(dir.string())),
+                               _(
+                                       "This looks like a DCP-o-matic project folder, which cannot be loaded into the player.  "
+                                       "Choose the DCP directory inside the DCP-o-matic project folder if that's what you want to play."
+                                )
+                               );
+               } catch (dcp::ReadError& e) {
+                       error_dialog (this, wxString::Format(_("Could not load a DCP from %s"), std_to_wx(dir.string())), std_to_wx(e.what()));
+               } catch (DCPError& e) {
                        error_dialog (this, wxString::Format(_("Could not load a DCP from %s"), std_to_wx(dir.string())), std_to_wx(e.what()));
                }
        }
 
+       void add_dcp_to_film (weak_ptr<Job> weak_job, weak_ptr<Content> weak_content)
+       {
+               auto job = weak_job.lock ();
+               if (!job || !job->finished_ok()) {
+                       return;
+               }
+
+               auto content = weak_content.lock ();
+               if (!content) {
+                       return;
+               }
+
+               _film->add_content (content);
+               _stress.set_suspended (false);
+       }
+
        void reset_film_weak (weak_ptr<Film> weak_film)
        {
-               shared_ptr<Film> film = weak_film.lock ();
+               auto film = weak_film.lock ();
                if (film) {
                        reset_film (film);
                }
@@ -381,6 +391,8 @@ public:
        void reset_film (shared_ptr<Film> film = shared_ptr<Film>(new Film(optional<boost::filesystem::path>())))
        {
                _film = film;
+               _film->set_tolerant (true);
+               _film->set_audio_channels (MAX_DCP_AUDIO_CHANNELS);
                _viewer->set_film (_film);
                _controls->set_film (_film);
                _film->Change.connect (bind(&DOMFrame::film_changed, this, _1, _2));
@@ -389,7 +401,7 @@ public:
 
        void film_changed (ChangeType type, Film::Property property)
        {
-               if (type != CHANGE_TYPE_DONE || property != Film::CONTENT) {
+               if (type != ChangeType::DONE || property != Film::Property::CONTENT) {
                        return;
                }
 
@@ -400,15 +412,15 @@ public:
                /* Start off as Flat */
                _film->set_container (Ratio::from_id("185"));
 
-               BOOST_FOREACH (shared_ptr<Content> i, _film->content()) {
-                       shared_ptr<DCPContent> dcp = dynamic_pointer_cast<DCPContent>(i);
+               for (auto i: _film->content()) {
+                       auto dcp = dynamic_pointer_cast<DCPContent>(i);
 
-                       BOOST_FOREACH (shared_ptr<TextContent> j, i->text) {
+                       for (auto j: i->text) {
                                j->set_use (true);
                        }
 
                        if (i->video) {
-                               Ratio const * r = Ratio::nearest_from_ratio(i->video->size().ratio());
+                               auto const r = Ratio::nearest_from_ratio(i->video->size().ratio());
                                if (r->id() == "239") {
                                        /* Any scope content means we use scope */
                                        _film->set_container(r);
@@ -416,7 +428,7 @@ public:
                        }
 
                        /* Any 3D content means we use 3D mode */
-                       if (i->video && i->video->frame_type() != VIDEO_FRAME_TYPE_2D) {
+                       if (i->video && i->video->frame_type() != VideoFrameType::TWO_D) {
                                _film->set_three_d (true);
                        }
                }
@@ -426,21 +438,20 @@ public:
 
                set_menu_sensitivity ();
 
-               wxMenuItemList old = _cpl_menu->GetMenuItems();
-               for (wxMenuItemList::iterator i = old.begin(); i != old.end(); ++i) {
-                       _cpl_menu->Remove (*i);
+               auto old = _cpl_menu->GetMenuItems();
+               for (auto const& i: old) {
+                       _cpl_menu->Remove (i);
                }
 
                if (_film->content().size() == 1) {
                        /* Offer a CPL menu */
-                       shared_ptr<DCPContent> first = dynamic_pointer_cast<DCPContent>(_film->content().front());
+                       auto first = dynamic_pointer_cast<DCPContent>(_film->content().front());
                        if (first) {
-                               DCPExaminer ex (first);
                                int id = ID_view_cpl;
-                               BOOST_FOREACH (shared_ptr<dcp::CPL> i, ex.cpls()) {
-                                       wxMenuItem* j = _cpl_menu->AppendRadioItem(
+                               for (auto i: dcp::find_and_resolve_cpls(first->directories(), true)) {
+                                       auto j = _cpl_menu->AppendRadioItem(
                                                id,
-                                               wxString::Format("%s (%s)", std_to_wx(i->annotation_text()).data(), std_to_wx(i->id()).data())
+                                               wxString::Format("%s (%s)", std_to_wx(i->annotation_text().get_value_or("")).data(), std_to_wx(i->id()).data())
                                                );
                                        j->Check(!first->cpl() || i->id() == *first->cpl());
                                        ++id;
@@ -449,14 +460,49 @@ public:
                }
        }
 
+       void load_stress_script (boost::filesystem::path path)
+       {
+               _stress.load_script (path);
+       }
+
 private:
 
+       void examine_content ()
+       {
+               DCPOMATIC_ASSERT (_film);
+               auto dcp = dynamic_pointer_cast<DCPContent>(_film->content().front());
+               DCPOMATIC_ASSERT (dcp);
+               dcp->examine (_film, shared_ptr<Job>());
+
+               /* Examining content re-creates the TextContent objects, so we must re-enable them */
+               for (auto i: dcp->text) {
+                       i->set_use (true);
+               }
+       }
+
+       bool report_errors_from_last_job (wxWindow* parent) const
+       {
+               auto jm = JobManager::instance ();
+
+               DCPOMATIC_ASSERT (!jm->get().empty());
+
+               auto last = jm->get().back();
+               if (last->finished_in_error()) {
+                       error_dialog(parent, wxString::Format(_("Could not load DCP.\n\n%s."), std_to_wx(last->error_summary()).data()), std_to_wx(last->error_details()));
+                       return false;
+               }
+
+               return true;
+       }
+
        void setup_menu (wxMenuBar* m)
        {
                _file_menu = new wxMenu;
                _file_menu->Append (ID_file_open, _("&Open...\tCtrl-O"));
                _file_add_ov = _file_menu->Append (ID_file_add_ov, _("&Add OV..."));
-               _file_add_kdm = _file_menu->Append (ID_file_add_kdm, _("&Add KDM..."));
+               _file_add_kdm = _file_menu->Append (ID_file_add_kdm, _("Add &KDM..."));
+               _file_menu->AppendSeparator ();
+               _file_save_frame = _file_menu->Append (ID_file_save_frame, _("&Save frame to file...\tCtrl-S"));
 
                _history_position = _file_menu->GetMenuItems().GetCount();
 
@@ -471,24 +517,22 @@ private:
 #endif
 
 #ifdef __WXOSX__
-               wxMenuItem* prefs = _file_menu->Append (wxID_PREFERENCES, _("&Preferences...\tCtrl-P"));
+               auto prefs = _file_menu->Append (wxID_PREFERENCES, _("&Preferences...\tCtrl-P"));
 #else
-               wxMenu* edit = new wxMenu;
-               wxMenuItem* prefs = edit->Append (wxID_PREFERENCES, _("&Preferences...\tCtrl-P"));
+               auto edit = new wxMenu;
+               auto prefs = edit->Append (wxID_PREFERENCES, _("&Preferences...\tCtrl-P"));
 #endif
 
                prefs->Enable (Config::instance()->have_write_permission());
 
                _cpl_menu = new wxMenu;
 
-               wxMenu* view = new wxMenu;
-               optional<int> c = Config::instance()->decode_reduction();
+               auto view = new wxMenu;
+               auto c = Config::instance()->decode_reduction();
                _view_cpl = view->Append(ID_view_cpl, _("CPL"), _cpl_menu);
                view->AppendSeparator();
-#ifndef DCPOMATIC_VARIANT_SWAROOP
                _view_full_screen = view->AppendCheckItem(ID_view_full_screen, _("Full screen\tF11"));
                _view_dual_screen = view->AppendCheckItem(ID_view_dual_screen, _("Dual screen\tShift+F11"));
-#endif
                setup_menu ();
                view->AppendSeparator();
                view->Append(ID_view_closed_captions, _("Closed captions..."));
@@ -498,13 +542,14 @@ private:
                view->AppendRadioItem(ID_view_scale_half, _("Decode at half resolution"))->Check(c && c.get() == 1);
                view->AppendRadioItem(ID_view_scale_quarter, _("Decode at quarter resolution"))->Check(c && c.get() == 2);
 
-               wxMenu* tools = new wxMenu;
-               _tools_verify = tools->Append (ID_tools_verify, _("Verify DCP"));
+               auto tools = new wxMenu;
+               _tools_verify = tools->Append (ID_tools_verify, _("Verify DCP..."));
                tools->AppendSeparator ();
                tools->Append (ID_tools_check_for_updates, _("Check for updates"));
                tools->Append (ID_tools_timing, _("Timing..."));
+               tools->Append (ID_tools_system_information, _("System information..."));
 
-               wxMenu* help = new wxMenu;
+               auto help = new wxMenu;
 #ifdef __WXOSX__
                help->Append (wxID_ABOUT, _("About DCP-o-matic"));
 #else
@@ -523,12 +568,12 @@ private:
 
        void file_open ()
        {
-               wxString d = wxStandardPaths::Get().GetDocumentsDir();
+               auto d = wxStandardPaths::Get().GetDocumentsDir();
                if (Config::instance()->last_player_load_directory()) {
                        d = std_to_wx (Config::instance()->last_player_load_directory()->string());
                }
 
-               wxDirDialog* c = new wxDirDialog (this, _("Select DCP to open"), d, wxDEFAULT_DIALOG_STYLE | wxDD_DIR_MUST_EXIST);
+               auto c = new wxDirDialog (this, _("Select DCP to open"), d, wxDEFAULT_DIALOG_STYLE | wxDD_DIR_MUST_EXIST);
 
                int r;
                while (true) {
@@ -551,7 +596,7 @@ private:
 
        void file_add_ov ()
        {
-               wxDirDialog* c = new wxDirDialog (
+               auto c = new wxDirDialog (
                        this,
                        _("Select DCP to open as OV"),
                        wxStandardPaths::Get().GetDocumentsDir(),
@@ -570,19 +615,19 @@ private:
 
                if (r == wxID_OK) {
                        DCPOMATIC_ASSERT (_film);
-                       shared_ptr<DCPContent> dcp = boost::dynamic_pointer_cast<DCPContent>(_film->content().front());
+                       auto dcp = std::dynamic_pointer_cast<DCPContent>(_film->content().front());
                        DCPOMATIC_ASSERT (dcp);
                        dcp->add_ov (wx_to_std(c->GetPath()));
-                       JobManager::instance()->add(shared_ptr<Job>(new ExamineContentJob (_film, dcp)));
+                       JobManager::instance()->add(make_shared<ExamineContentJob>(_film, dcp));
                        bool const ok = display_progress (_("DCP-o-matic Player"), _("Loading content"));
                        if (!ok || !report_errors_from_last_job(this)) {
                                return;
                        }
-                       BOOST_FOREACH (shared_ptr<TextContent> i, dcp->text) {
+                       for (auto i: dcp->text) {
                                i->set_use (true);
                        }
                        if (dcp->video) {
-                               Ratio const * r = Ratio::nearest_from_ratio(dcp->video->size().ratio());
+                               auto const r = Ratio::nearest_from_ratio(dcp->video->size().ratio());
                                if (r) {
                                        _film->set_container(r);
                                }
@@ -595,30 +640,18 @@ private:
 
        void file_add_kdm ()
        {
-               wxFileDialog* d = new wxFileDialog (this, _("Select KDM"));
+               auto d = new wxFileDialog (this, _("Select KDM"));
 
                if (d->ShowModal() == wxID_OK) {
                        DCPOMATIC_ASSERT (_film);
-#ifdef DCPOMATIC_VARIANT_SWAROOP
-                       shared_ptr<FFmpegContent> ffmpeg = boost::dynamic_pointer_cast<FFmpegContent>(_film->content().front());
-                       if (ffmpeg) {
-                               try {
-                                       ffmpeg->add_kdm (EncryptedECinemaKDM(dcp::file_to_string(wx_to_std(d->GetPath()), MAX_KDM_SIZE)));
-                               } catch (exception& e) {
-                                       error_dialog (this, wxString::Format(_("Could not load KDM.")), std_to_wx(e.what()));
-                                       d->Destroy();
-                                       return;
-                               }
-                       }
-#endif
-                       shared_ptr<DCPContent> dcp = boost::dynamic_pointer_cast<DCPContent>(_film->content().front());
-#ifndef DCPOMATIC_VARIANT_SWAROOP
+                       auto dcp = std::dynamic_pointer_cast<DCPContent>(_film->content().front());
                        DCPOMATIC_ASSERT (dcp);
-#endif
                        try {
                                if (dcp) {
+                                       _viewer->set_coalesce_player_changes (true);
                                        dcp->add_kdm (dcp::EncryptedKDM(dcp::file_to_string(wx_to_std(d->GetPath()), MAX_KDM_SIZE)));
-                                       dcp->examine (_film, shared_ptr<Job>());
+                                       examine_content();
+                                       _viewer->set_coalesce_player_changes (false);
                                }
                        } catch (exception& e) {
                                error_dialog (this, wxString::Format (_("Could not load KDM.")), std_to_wx(e.what()));
@@ -631,9 +664,45 @@ private:
                _info->triggered_update ();
        }
 
+       void file_save_frame ()
+       {
+               wxFileDialog dialog (this, _("Save frame to file"), "", "", "PNG files (*.png)|*.png|JPEG files (*.jpg,*.jpeg)|*.jpg,*.jpeg", wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
+               if (dialog.ShowModal() == wxID_CANCEL) {
+                       return;
+               }
+
+               auto path = boost::filesystem::path (wx_to_std(dialog.GetPath()));
+
+               auto player = make_shared<Player>(_film, Image::Alignment::PADDED);
+               player->seek (_viewer->position(), true);
+
+               bool done = false;
+               player->Video.connect ([path, &done, this](shared_ptr<PlayerVideo> video, DCPTime) {
+                       auto ext = boost::algorithm::to_lower_copy(path.extension().string());
+                       if (ext == ".png") {
+                               auto image = video->image(boost::bind(PlayerVideo::force, AV_PIX_FMT_RGBA), VideoRange::FULL, false);
+                               image_as_png(image).write(path);
+                       } else if (ext == ".jpg" || ext == ".jpeg") {
+                               auto image = video->image(boost::bind(PlayerVideo::force, AV_PIX_FMT_RGB24), VideoRange::FULL, false);
+                               image_as_jpeg(image, 80).write(path);
+                       } else {
+                               error_dialog (this, _(wxString::Format("Unrecognised file extension %s (use .jpg, .jpeg or .png)", std_to_wx(ext))));
+                       }
+                       done = true;
+               });
+
+               int tries_left = 50;
+               while (!done && tries_left >= 0) {
+                       player->pass();
+                       --tries_left;
+               }
+
+               DCPOMATIC_ASSERT (tries_left >= 0);
+       }
+
        void file_history (wxCommandEvent& event)
        {
-               vector<boost::filesystem::path> history = Config::instance()->player_history ();
+               auto history = Config::instance()->player_history ();
                int n = event.GetId() - ID_file_history;
                if (n >= 0 && n < static_cast<int> (history.size ())) {
                        try {
@@ -670,21 +739,24 @@ private:
 
        void view_cpl (wxCommandEvent& ev)
        {
-               shared_ptr<DCPContent> dcp = boost::dynamic_pointer_cast<DCPContent>(_film->content().front());
+               auto dcp = std::dynamic_pointer_cast<DCPContent>(_film->content().front());
                DCPOMATIC_ASSERT (dcp);
-               DCPExaminer ex (dcp);
+               auto cpls = dcp::find_and_resolve_cpls (dcp->directories(), true);
                int id = ev.GetId() - ID_view_cpl;
                DCPOMATIC_ASSERT (id >= 0);
-               DCPOMATIC_ASSERT (id < int(ex.cpls().size()));
-               list<shared_ptr<dcp::CPL> > cpls = ex.cpls();
-               list<shared_ptr<dcp::CPL> >::iterator i = cpls.begin();
+               DCPOMATIC_ASSERT (id < int(cpls.size()));
+               auto i = cpls.begin();
                while (id > 0) {
                        ++i;
                        --id;
                }
 
+               _viewer->set_coalesce_player_changes (true);
                dcp->set_cpl ((*i)->id());
-               dcp->examine (_film, shared_ptr<Job>());
+               examine_content ();
+               _viewer->set_coalesce_player_changes (false);
+
+               _info->triggered_update ();
        }
 
        void view_full_screen ()
@@ -732,20 +804,22 @@ private:
                        _dual_screen->SetBackgroundColour (wxColour(0, 0, 0));
                        _dual_screen->ShowFullScreen (true);
                        _viewer->panel()->Reparent (_dual_screen);
+                       _viewer->panel()->SetFocus();
                        _dual_screen->Show ();
                        if (wxDisplay::GetCount() > 1) {
                                switch (Config::instance()->image_display()) {
                                case 0:
                                        _dual_screen->Move (0, 0);
-                                       Move (wxDisplay(0).GetClientArea().GetWidth(), 0);
+                                       Move (wxDisplay(0U).GetClientArea().GetWidth(), 0);
                                        break;
                                case 1:
-                                       _dual_screen->Move (wxDisplay(0).GetClientArea().GetWidth(), 0);
+                                       _dual_screen->Move (wxDisplay(0U).GetClientArea().GetWidth(), 0);
                                        // (0, 0) doesn't seem to work for some strange reason
                                        Move (8, 8);
                                        break;
                                }
                        }
+                       _dual_screen->Bind(wxEVT_CHAR_HOOK, boost::bind(&DOMFrame::dual_screen_key_press, this, _1));
                } else {
                        if (_dual_screen) {
                                _viewer->panel()->Reparent (_overall_panel);
@@ -757,6 +831,17 @@ private:
                setup_main_sizer (_mode);
        }
 
+       void dual_screen_key_press(wxKeyEvent& ev)
+       {
+               if (ev.GetKeyCode() == WXK_F11) {
+                       if (ev.ShiftDown()) {
+                               view_dual_screen();
+                       } else if (!ev.HasAnyModifiers()) {
+                               view_full_screen();
+                       }
+               }
+       }
+
        void view_closed_captions ()
        {
                _viewer->show_closed_captions ();
@@ -764,21 +849,18 @@ private:
 
        void tools_verify ()
        {
-               shared_ptr<DCPContent> dcp = boost::dynamic_pointer_cast<DCPContent>(_film->content().front());
+               auto dcp = std::dynamic_pointer_cast<DCPContent>(_film->content().front());
                DCPOMATIC_ASSERT (dcp);
 
-               JobManager* jm = JobManager::instance ();
-               jm->add (shared_ptr<Job> (new VerifyDCPJob (dcp->directories())));
-               bool const ok = display_progress (_("DCP-o-matic Player"), _("Verifying DCP"));
-               if (!ok) {
+               auto job = make_shared<VerifyDCPJob>(dcp->directories());
+               auto progress = new VerifyDCPProgressDialog(this, _("DCP-o-matic Player"));
+               bool const completed = progress->run (job);
+               progress->Destroy ();
+               if (!completed) {
                        return;
                }
 
-               DCPOMATIC_ASSERT (!jm->get().empty());
-               shared_ptr<VerifyDCPJob> last = dynamic_pointer_cast<VerifyDCPJob> (jm->get().back());
-               DCPOMATIC_ASSERT (last);
-
-               VerifyDCPDialog* d = new VerifyDCPDialog (this, last);
+               auto d = new VerifyDCPDialog (this, job);
                d->ShowModal ();
                d->Destroy ();
        }
@@ -791,21 +873,30 @@ private:
 
        void tools_timing ()
        {
-               TimerDisplay* d = new TimerDisplay (this, _viewer->state_timer(), _viewer->gets());
+               auto d = new TimerDisplay (this, _viewer->state_timer(), _viewer->gets());
                d->ShowModal ();
                d->Destroy ();
        }
 
+       void tools_system_information ()
+       {
+               if (!_system_information_dialog) {
+                       _system_information_dialog = new SystemInformationDialog (this, _viewer);
+               }
+
+               _system_information_dialog->Show ();
+       }
+
        void help_about ()
        {
-               AboutDialog* d = new AboutDialog (this);
+               auto d = new AboutDialog (this);
                d->ShowModal ();
                d->Destroy ();
        }
 
        void help_report_a_problem ()
        {
-               ReportProblemDialog* d = new ReportProblemDialog (this);
+               auto d = new ReportProblemDialog (this);
                if (d->ShowModal () == wxID_OK) {
                        d->report ();
                }
@@ -814,7 +905,7 @@ private:
 
        void update_checker_state_changed ()
        {
-               UpdateChecker* uc = UpdateChecker::instance ();
+               auto uc = UpdateChecker::instance ();
 
                bool const announce =
                        _update_news_requested ||
@@ -827,11 +918,11 @@ private:
                        return;
                }
 
-               if (uc->state() == UpdateChecker::YES) {
-                       UpdateDialog* dialog = new UpdateDialog (this, uc->stable (), uc->test ());
+               if (uc->state() == UpdateChecker::State::YES) {
+                       auto dialog = new UpdateDialog (this, uc->stable (), uc->test ());
                        dialog->ShowModal ();
                        dialog->Destroy ();
-               } else if (uc->state() == UpdateChecker::FAILED) {
+               } else if (uc->state() == UpdateChecker::State::FAILED) {
                        error_dialog (this, _("The DCP-o-matic download server could not be contacted."));
                } else {
                        error_dialog (this, _("There are no new versions of DCP-o-matic available."));
@@ -875,13 +966,13 @@ private:
                        _file_menu->Remove (_history_separator);
                }
                delete _history_separator;
-               _history_separator = 0;
+               _history_separator = nullptr;
 
                int pos = _history_position;
 
-               /* Clear out non-existant history items before we re-build the menu */
+               /* Clear out non-existent history items before we re-build the menu */
                Config::instance()->clean_player_history ();
-               vector<boost::filesystem::path> history = Config::instance()->player_history ();
+               auto history = Config::instance()->player_history ();
 
                if (!history.empty ()) {
                        _history_separator = _file_menu->InsertSeparator (pos++);
@@ -900,13 +991,13 @@ private:
                _history_items = history.size ();
 
                if (prop == Config::PLAYER_DEBUG_LOG) {
-                       optional<boost::filesystem::path> p = Config::instance()->player_debug_log_file();
+                       auto p = Config::instance()->player_debug_log_file();
                        if (p) {
-                               dcpomatic_log.reset (new FileLog(*p));
+                               dcpomatic_log = make_shared<FileLog>(*p);
                        } else {
-                               dcpomatic_log.reset (new NullLog());
+                               dcpomatic_log = make_shared<NullLog>();
                        }
-                       dcpomatic_log->set_types (LogEntry::TYPE_GENERAL | LogEntry::TYPE_WARNING | LogEntry::TYPE_ERROR | LogEntry::TYPE_DEBUG_PLAYER);
+                       dcpomatic_log->set_types (LogEntry::TYPE_GENERAL | LogEntry::TYPE_WARNING | LogEntry::TYPE_ERROR | LogEntry::TYPE_DEBUG_VIDEO_VIEW);
                }
        }
 
@@ -915,6 +1006,7 @@ private:
                _tools_verify->Enable (static_cast<bool>(_film));
                _file_add_ov->Enable (static_cast<bool>(_film));
                _file_add_kdm->Enable (static_cast<bool>(_film));
+               _file_save_frame->Enable (static_cast<bool>(_film));
                _view_cpl->Enable (static_cast<bool>(_film));
        }
 
@@ -927,44 +1019,63 @@ private:
                }
        }
 
-       void back_frame ()
+       void go_back_frame ()
        {
                _viewer->seek_by (-_viewer->one_video_frame(), true);
        }
 
-       void forward_frame ()
+       void go_forward_frame ()
        {
                _viewer->seek_by (_viewer->one_video_frame(), true);
        }
 
-private:
+       void go_seconds (int s)
+       {
+               _viewer->seek_by (DCPTime::from_seconds(s), true);
+       }
+
+       void go_to_start ()
+       {
+               _viewer->seek (DCPTime(), true);
+       }
 
-       wxFrame* _dual_screen;
-       bool _update_news_requested;
-       PlayerInformation* _info;
+       void go_to_end ()
+       {
+               _viewer->seek (_film->length() - _viewer->one_video_frame(), true);
+       }
+
+       wxFrame* _dual_screen = nullptr;
+       bool _update_news_requested = false;
+       PlayerInformation* _info = nullptr;
        Config::PlayerMode _mode;
-       wxPreferencesEditor* _config_dialog;
-       wxPanel* _overall_panel;
-       wxMenu* _file_menu;
-       wxMenuItem* _view_cpl;
-       wxMenu* _cpl_menu;
-       int _history_items;
-       int _history_position;
-       wxMenuItem* _history_separator;
+       wxPreferencesEditor* _config_dialog = nullptr;
+       wxPanel* _overall_panel = nullptr;
+       wxMenu* _file_menu = nullptr;
+       wxMenuItem* _view_cpl = nullptr;
+       wxMenu* _cpl_menu = nullptr;
+       int _history_items = 0;
+       int _history_position = 0;
+       wxMenuItem* _history_separator = nullptr;
        shared_ptr<FilmViewer> _viewer;
        Controls* _controls;
-       boost::shared_ptr<Film> _film;
+       SystemInformationDialog* _system_information_dialog = nullptr;
+       std::shared_ptr<Film> _film;
        boost::signals2::scoped_connection _config_changed_connection;
-       wxMenuItem* _file_add_ov;
-       wxMenuItem* _file_add_kdm;
-       wxMenuItem* _tools_verify;
-       wxMenuItem* _view_full_screen;
-       wxMenuItem* _view_dual_screen;
+       boost::signals2::scoped_connection _examine_job_connection;
+       wxMenuItem* _file_add_ov = nullptr;
+       wxMenuItem* _file_add_kdm = nullptr;
+       wxMenuItem* _file_save_frame = nullptr;
+       wxMenuItem* _tools_verify = nullptr;
+       wxMenuItem* _view_full_screen = nullptr;
+       wxMenuItem* _view_dual_screen = nullptr;
+       wxSizer* _main_sizer = nullptr;
+       PlayerStressTester _stress;
 };
 
 static const wxCmdLineEntryDesc command_line_description[] = {
        { wxCMD_LINE_PARAM, 0, 0, "DCP to load or create", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
        { wxCMD_LINE_OPTION, "c", "config", "Directory containing config.xml", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
+       { wxCMD_LINE_OPTION, "s", "stress", "File containing description of stress test", wxCMD_LINE_VAL_STRING, wxCMD_LINE_PARAM_OPTIONAL },
        { wxCMD_LINE_NONE, "", "", "", wxCmdLineParamType (0), 0 }
 };
 
@@ -976,7 +1087,7 @@ public:
                , _frame (frame)
        {}
 
-       void handle (shared_ptr<Socket> socket)
+       void handle (shared_ptr<Socket> socket) override
        {
                try {
                        int const length = socket->read_uint32 ();
@@ -1002,14 +1113,17 @@ class App : public wxApp
 public:
        App ()
                : wxApp ()
-               , _frame (0)
-       {}
+       {
+#ifdef DCPOMATIC_LINUX
+               XInitThreads ();
+#endif
+       }
 
 private:
 
-       bool OnInit ()
+       bool OnInit () override
        {
-               wxSplashScreen* splash = 0;
+               wxSplashScreen* splash = nullptr;
                try {
                        wxInitAllImageHandlers ();
 
@@ -1028,10 +1142,8 @@ private:
                        unsetenv ("UBUNTU_MENUPROXY");
 #endif
 
-#ifdef __WXOSX__
-                       ProcessSerialNumber serial;
-                       GetCurrentProcess (&serial);
-                       TransformProcessType (&serial, kProcessTransformToForegroundApplication);
+#ifdef DCPOMATIC_OSX
+                       make_foreground_application ();
 #endif
 
                        dcpomatic_setup_path_encoding ();
@@ -1061,12 +1173,19 @@ private:
                        _frame->Maximize ();
                        if (splash) {
                                splash->Destroy ();
-                               splash = 0;
+                               splash = nullptr;
                        }
                        _frame->Show ();
 
-                       PlayServer* server = new PlayServer (_frame);
-                       new thread (boost::bind (&PlayServer::run, server));
+                       try {
+                               auto server = new PlayServer (_frame);
+                               new thread (boost::bind (&PlayServer::run, server));
+                       } catch (std::exception& e) {
+                               /* This is not the end of the world; probably a failure to bind the server socket
+                                * because there's already another player running.
+                                */
+                               LOG_DEBUG_PLAYER ("Failed to start play server (%1)", e.what());
+                       }
 
                        if (!_dcp_to_load.empty() && boost::filesystem::is_directory (_dcp_to_load)) {
                                try {
@@ -1076,6 +1195,14 @@ private:
                                }
                        }
 
+                       if (_stress) {
+                               try {
+                                       _frame->load_stress_script (*_stress);
+                               } catch (exception& e) {
+                                       error_dialog (0, wxString::Format("Could not load stress test file %s", std_to_wx(*_stress)));
+                               }
+                       }
+
                        Bind (wxEVT_IDLE, boost::bind (&App::idle, this));
 
                        if (Config::instance()->check_for_updates ()) {
@@ -1093,13 +1220,13 @@ private:
                return true;
        }
 
-       void OnInitCmdLine (wxCmdLineParser& parser)
+       void OnInitCmdLine (wxCmdLineParser& parser) override
        {
                parser.SetDesc (command_line_description);
                parser.SetSwitchChars (wxT ("-"));
        }
 
-       bool OnCmdLineParsed (wxCmdLineParser& parser)
+       bool OnCmdLineParsed (wxCmdLineParser& parser) override
        {
                if (parser.GetParamCount() > 0) {
                        _dcp_to_load = wx_to_std (parser.GetParam (0));
@@ -1109,6 +1236,10 @@ private:
                if (parser.Found("c", &config)) {
                        Config::override_path = wx_to_std (config);
                }
+               wxString stress;
+               if (parser.Found("s", &stress)) {
+                       _stress = wx_to_std (stress);
+               }
 
                return true;
        }
@@ -1140,14 +1271,14 @@ private:
        }
 
        /* An unhandled exception has occurred inside the main event loop */
-       bool OnExceptionInMainLoop ()
+       bool OnExceptionInMainLoop () override
        {
                report_exception ();
                /* This will terminate the program */
                return false;
        }
 
-       void OnUnhandledException ()
+       void OnUnhandledException () override
        {
                report_exception ();
        }
@@ -1167,8 +1298,9 @@ private:
                message_dialog (_frame, std_to_wx (m));
        }
 
-       DOMFrame* _frame;
+       DOMFrame* _frame = nullptr;
        string _dcp_to_load;
+       boost::optional<string> _stress;
 };
 
 IMPLEMENT_APP (App)