Replace May/Done/NotDone signal sets with one signal and extend
[dcpomatic.git] / src / lib / player.cc
index 5e42d8e37d609d67786bacbbaac4609270055853..0c3aea0288ef057f531ef315333a01277c945655 100644 (file)
@@ -87,7 +87,7 @@ int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
        : _film (film)
        , _playlist (playlist)
-       , _have_valid_pieces (false)
+       , _suspended (false)
        , _ignore_video (false)
        , _ignore_audio (false)
        , _ignore_text (false)
@@ -98,12 +98,13 @@ Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist
        , _shuffler (0)
 {
        _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
-       _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
-       _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
+       _playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1));
+       _playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4));
        set_video_container_size (_film->frame_size ());
 
        film_changed (Film::AUDIO_PROCESSOR);
 
+       setup_pieces ();
        seek (DCPTime (), true);
 }
 
@@ -114,6 +115,13 @@ Player::~Player ()
 
 void
 Player::setup_pieces ()
+{
+       boost::mutex::scoped_lock lm (_mutex);
+       setup_pieces_unlocked ();
+}
+
+void
+Player::setup_pieces_unlocked ()
 {
        _pieces.clear ();
 
@@ -210,63 +218,25 @@ Player::setup_pieces ()
        _last_video_time = DCPTime ();
        _last_video_eyes = EYES_BOTH;
        _last_audio_time = DCPTime ();
-       _have_valid_pieces = true;
+       _suspended = false;
 }
 
 void
-Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
+Player::playlist_content_change (ChangeType type, int property, bool frequent)
 {
-       shared_ptr<Content> c = w.lock ();
-       if (!c) {
-               return;
+       if (type == CHANGE_TYPE_PENDING) {
+               boost::mutex::scoped_lock lm (_mutex);
+               /* The player content is probably about to change, so we can't carry on
+                  until that has happened and we've rebuilt our pieces.  Stop pass()
+                  and seek() from working until then.
+               */
+               _suspended = true;
+       } else if (type == CHANGE_TYPE_DONE) {
+               /* A change in our content has gone through.  Re-build our pieces. */
+               setup_pieces ();
        }
 
-       if (
-               property == ContentProperty::POSITION ||
-               property == ContentProperty::LENGTH ||
-               property == ContentProperty::TRIM_START ||
-               property == ContentProperty::TRIM_END ||
-               property == ContentProperty::PATH ||
-               property == VideoContentProperty::FRAME_TYPE ||
-               property == VideoContentProperty::COLOUR_CONVERSION ||
-               property == AudioContentProperty::STREAMS ||
-               property == DCPContentProperty::NEEDS_ASSETS ||
-               property == DCPContentProperty::NEEDS_KDM ||
-               property == TextContentProperty::COLOUR ||
-               property == TextContentProperty::EFFECT ||
-               property == TextContentProperty::EFFECT_COLOUR ||
-               property == FFmpegContentProperty::SUBTITLE_STREAM ||
-               property == FFmpegContentProperty::FILTERS
-               ) {
-
-               {
-                       boost::mutex::scoped_lock lm (_mutex);
-                       _have_valid_pieces = false;
-               }
-
-               Changed (property, frequent);
-
-       } else if (
-               property == TextContentProperty::LINE_SPACING ||
-               property == TextContentProperty::OUTLINE_WIDTH ||
-               property == TextContentProperty::Y_SCALE ||
-               property == TextContentProperty::FADE_IN ||
-               property == TextContentProperty::FADE_OUT ||
-               property == ContentProperty::VIDEO_FRAME_RATE ||
-               property == TextContentProperty::USE ||
-               property == TextContentProperty::X_OFFSET ||
-               property == TextContentProperty::Y_OFFSET ||
-               property == TextContentProperty::X_SCALE ||
-               property == TextContentProperty::FONTS ||
-               property == TextContentProperty::TYPE ||
-               property == VideoContentProperty::CROP ||
-               property == VideoContentProperty::SCALE ||
-               property == VideoContentProperty::FADE_IN ||
-               property == VideoContentProperty::FADE_OUT
-               ) {
-
-               Changed (property, frequent);
-       }
+       Change (type, property, frequent);
 }
 
 void
@@ -285,18 +255,16 @@ Player::set_video_container_size (dcp::Size s)
                _black_image->make_black ();
        }
 
-       Changed (PlayerProperty::VIDEO_CONTAINER_SIZE, false);
+       Change (CHANGE_TYPE_DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false);
 }
 
 void
-Player::playlist_changed ()
+Player::playlist_change (ChangeType type)
 {
-       {
-               boost::mutex::scoped_lock lm (_mutex);
-               _have_valid_pieces = false;
+       if (type == CHANGE_TYPE_DONE) {
+               setup_pieces ();
        }
-
-       Changed (PlayerProperty::PLAYLIST, false);
+       Change (type, PlayerProperty::PLAYLIST, false);
 }
 
 void
@@ -308,16 +276,14 @@ Player::film_changed (Film::Property p)
        */
 
        if (p == Film::CONTAINER) {
-               Changed (PlayerProperty::FILM_CONTAINER, false);
+               Change (CHANGE_TYPE_PENDING, PlayerProperty::FILM_CONTAINER, false);
        } else if (p == Film::VIDEO_FRAME_RATE) {
                /* Pieces contain a FrameRateChange which contains the DCP frame rate,
                   so we need new pieces here.
                */
-               {
-                       boost::mutex::scoped_lock lm (_mutex);
-                       _have_valid_pieces = false;
-               }
-               Changed (PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
+               /* XXX: missing PENDING! */
+               setup_pieces ();
+               Change (CHANGE_TYPE_DONE, PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
        } else if (p == Film::AUDIO_PROCESSOR) {
                if (_film->audio_processor ()) {
                        boost::mutex::scoped_lock lm (_mutex);
@@ -441,11 +407,7 @@ Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
 list<shared_ptr<Font> >
 Player::get_subtitle_fonts ()
 {
-       /* Does not require a lock on _mutex as it's only called from DCPEncoder */
-
-       if (!_have_valid_pieces) {
-               setup_pieces ();
-       }
+       boost::mutex::scoped_lock lm (_mutex);
 
        list<shared_ptr<Font> > fonts;
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
@@ -467,7 +429,7 @@ Player::set_ignore_video ()
 {
        boost::mutex::scoped_lock lm (_mutex);
        _ignore_video = true;
-       _have_valid_pieces = false;
+       setup_pieces_unlocked ();
 }
 
 void
@@ -475,7 +437,7 @@ Player::set_ignore_audio ()
 {
        boost::mutex::scoped_lock lm (_mutex);
        _ignore_audio = true;
-       _have_valid_pieces = false;
+       setup_pieces_unlocked ();
 }
 
 void
@@ -483,6 +445,7 @@ Player::set_ignore_text ()
 {
        boost::mutex::scoped_lock lm (_mutex);
        _ignore_text = true;
+       setup_pieces_unlocked ();
 }
 
 /** Set the player to always burn open texts into the image regardless of the content settings */
@@ -499,7 +462,7 @@ Player::set_fast ()
 {
        boost::mutex::scoped_lock lm (_mutex);
        _fast = true;
-       _have_valid_pieces = false;
+       setup_pieces_unlocked ();
 }
 
 void
@@ -507,7 +470,7 @@ Player::set_play_referenced ()
 {
        boost::mutex::scoped_lock lm (_mutex);
        _play_referenced = true;
-       _have_valid_pieces = false;
+       setup_pieces_unlocked ();
 }
 
 list<ReferencedReelAsset>
@@ -593,13 +556,8 @@ Player::pass ()
 {
        boost::mutex::scoped_lock lm (_mutex);
 
-       if (!_have_valid_pieces) {
-               /* This should only happen when we are under the control of the butler.  In this case, _have_valid_pieces
-                  will be false if something in the Player has changed and we are waiting for the butler to notice
-                  and do a seek back to the place we were at before.  During this time we don't want pass() to do anything,
-                  as just after setup_pieces the new decoders will be back to time 0 until the seek has gone through.  Just do nothing
-                  here and assume that the seek will be forthcoming.
-               */
+       if (_suspended) {
+               /* We can't pass in this state */
                return false;
        }
 
@@ -1024,8 +982,9 @@ Player::seek (DCPTime time, bool accurate)
 {
        boost::mutex::scoped_lock lm (_mutex);
 
-       if (!_have_valid_pieces) {
-               setup_pieces ();
+       if (_suspended) {
+               /* We can't seek in this state */
+               return;
        }
 
        if (_shuffler) {
@@ -1172,35 +1131,35 @@ Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTi
 void
 Player::set_dcp_decode_reduction (optional<int> reduction)
 {
+       Change (CHANGE_TYPE_PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false);
+
        {
                boost::mutex::scoped_lock lm (_mutex);
 
                if (reduction == _dcp_decode_reduction) {
+                       lm.unlock ();
+                       Change (CHANGE_TYPE_CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false);
                        return;
                }
 
                _dcp_decode_reduction = reduction;
-               _have_valid_pieces = false;
+               setup_pieces_unlocked ();
        }
 
-       Changed (PlayerProperty::DCP_DECODE_REDUCTION, false);
+       Change (CHANGE_TYPE_DONE, PlayerProperty::DCP_DECODE_REDUCTION, false);
 }
 
-DCPTime
+optional<DCPTime>
 Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
 {
        boost::mutex::scoped_lock lm (_mutex);
 
-       if (_have_valid_pieces) {
-               setup_pieces ();
-       }
-
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
                if (i->content == content) {
                        return content_time_to_dcp (i, t);
                }
        }
 
-       DCPOMATIC_ASSERT (false);
-       return DCPTime ();
+       /* We couldn't find this content; perhaps things are being changed over */
+       return optional<DCPTime>();
 }