Remove approximate size stuff where playback viewer would round
[dcpomatic.git] / src / lib / player.cc
index d0eb27aa31cc4ab0eb404deec5ac47157dbf330f..436ae3fe88fb33adaee5aacb1c2f3cfd99799b7f 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,8 +17,6 @@
 
 */
 
-#include <stdint.h>
-#include <algorithm>
 #include "player.h"
 #include "film.h"
 #include "ffmpeg_decoder.h"
 #include "subtitle_content.h"
 #include "subrip_decoder.h"
 #include "subrip_content.h"
+#include "dcp_content.h"
 #include "playlist.h"
 #include "job.h"
 #include "image.h"
-#include "image_proxy.h"
+#include "raw_image_proxy.h"
 #include "ratio.h"
 #include "log.h"
-#include "scaler.h"
 #include "render_subtitles.h"
 #include "config.h"
 #include "content_video.h"
-#include "player_video_frame.h"
+#include "player_video.h"
 #include "frame_rate_change.h"
+#include "dcp_content.h"
+#include "dcp_decoder.h"
+#include "dcp_subtitle_content.h"
+#include "dcp_subtitle_decoder.h"
+#include <boost/foreach.hpp>
+#include <stdint.h>
+#include <algorithm>
+
+#include "i18n.h"
 
 #define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
 
@@ -64,8 +71,7 @@ Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
        : _film (f)
        , _playlist (p)
        , _have_valid_pieces (false)
-       , _approximate_size (false)
-       , _burn_subtitles (false)
+       , _ignore_video (false)
 {
        _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
        _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2, _3));
@@ -121,6 +127,12 @@ Player::setup_pieces ()
                        frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
                }
 
+               shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (*i);
+               if (dc) {
+                       decoder.reset (new DCPDecoder (dc));
+                       frc = FrameRateChange (dc->video_frame_rate(), _film->video_frame_rate());
+               }
+
                /* ImageContent */
                shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
                if (ic) {
@@ -153,6 +165,18 @@ Player::setup_pieces ()
                        frc = best_overlap_frc;
                }
 
+               /* DCPSubtitleContent */
+               shared_ptr<const DCPSubtitleContent> dsc = dynamic_pointer_cast<const DCPSubtitleContent> (*i);
+               if (dsc) {
+                       decoder.reset (new DCPSubtitleDecoder (dsc));
+                       frc = best_overlap_frc;
+               }
+
+               shared_ptr<VideoDecoder> vd = dynamic_pointer_cast<VideoDecoder> (decoder);
+               if (vd && _ignore_video) {
+                       vd->set_ignore_video ();
+               }
+
                _pieces.push_back (shared_ptr<Piece> (new Piece (*i, decoder, frc.get ())));
        }
 
@@ -173,26 +197,30 @@ Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
                property == ContentProperty::TRIM_START ||
                property == ContentProperty::TRIM_END ||
                property == ContentProperty::PATH ||
-               property == VideoContentProperty::VIDEO_FRAME_TYPE
+               property == VideoContentProperty::VIDEO_FRAME_TYPE ||
+               property == DCPContentProperty::CAN_BE_PLAYED
                ) {
                
                _have_valid_pieces = false;
                Changed (frequent);
 
        } else if (
+               property == SubtitleContentProperty::USE_SUBTITLES ||
                property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
                property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
-               property == SubtitleContentProperty::SUBTITLE_SCALE ||
+               property == SubtitleContentProperty::SUBTITLE_X_SCALE ||
+               property == SubtitleContentProperty::SUBTITLE_Y_SCALE ||
                property == VideoContentProperty::VIDEO_CROP ||
                property == VideoContentProperty::VIDEO_SCALE ||
-               property == VideoContentProperty::VIDEO_FRAME_RATE
+               property == VideoContentProperty::VIDEO_FRAME_RATE ||
+               property == VideoContentProperty::VIDEO_FADE_IN ||
+               property == VideoContentProperty::VIDEO_FADE_OUT
                ) {
                
                Changed (frequent);
        }
 }
 
-/** @param already_resampled true if this data has already been through the chain up to the resampler */
 void
 Player::playlist_changed ()
 {
@@ -217,30 +245,23 @@ Player::film_changed (Film::Property p)
           last time we were run.
        */
 
-       if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
+       if (p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
                Changed (false);
        }
 }
 
 list<PositionImage>
-Player::process_content_image_subtitles (shared_ptr<SubtitleContent> content, list<shared_ptr<ContentImageSubtitle> > subs) const
+Player::transform_image_subtitles (list<ImageSubtitle> subs) const
 {
        list<PositionImage> all;
        
-       for (list<shared_ptr<ContentImageSubtitle> >::const_iterator i = subs.begin(); i != subs.end(); ++i) {
-               if (!(*i)->image) {
+       for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+               if (!i->image) {
                        continue;
                }
 
-               dcpomatic::Rect<double> in_rect = (*i)->rectangle;
-               dcp::Size scaled_size;
-               
-               in_rect.x += content->subtitle_x_offset ();
-               in_rect.y += content->subtitle_y_offset ();
-               
-               /* We will scale the subtitle up to fit _video_container_size, and also by the additional subtitle_scale */
-               scaled_size.width = in_rect.width * _video_container_size.width * content->subtitle_scale ();
-               scaled_size.height = in_rect.height * _video_container_size.height * content->subtitle_scale ();
+               /* We will scale the subtitle up to fit _video_container_size */
+               dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
                
                /* Then we need a corrective translation, consisting of two parts:
                 *
@@ -248,23 +269,23 @@ Player::process_content_image_subtitles (shared_ptr<SubtitleContent> content, li
                 *     rect.x * _video_container_size.width and rect.y * _video_container_size.height.
                 *
                 * 2.  that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
-                *     (width_before_subtitle_scale * (1 - subtitle_scale) / 2) and
-                *     (height_before_subtitle_scale * (1 - subtitle_scale) / 2).
+                *     (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
+                *     (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
                 *
                 * Combining these two translations gives these expressions.
                 */
 
                all.push_back (
                        PositionImage (
-                               (*i)->image->scale (
+                               i->image->scale (
                                        scaled_size,
-                                       Scaler::from_id ("bicubic"),
-                                       (*i)->image->pixel_format (),
+                                       dcp::YUV_TO_RGB_REC601,
+                                       i->image->pixel_format (),
                                        true
                                        ),
                                Position<int> (
-                                       rint (_video_container_size.width * (in_rect.x + (in_rect.width * (1 - content->subtitle_scale ()) / 2))),
-                                       rint (_video_container_size.height * (in_rect.y + (in_rect.height * (1 - content->subtitle_scale ()) / 2)))
+                                       rint (_video_container_size.width * i->rectangle.x),
+                                       rint (_video_container_size.height * i->rectangle.y)
                                        )
                                )
                        );
@@ -273,35 +294,17 @@ Player::process_content_image_subtitles (shared_ptr<SubtitleContent> content, li
        return all;
 }
 
-list<PositionImage>
-Player::process_content_text_subtitles (list<shared_ptr<ContentTextSubtitle> > sub) const
-{
-       list<PositionImage> all;
-       for (list<shared_ptr<ContentTextSubtitle> >::const_iterator i = sub.begin(); i != sub.end(); ++i) {
-               if (!(*i)->subs.empty ()) {
-                       all.push_back (render_subtitles ((*i)->subs, _video_container_size));
-               }
-       }
-
-       return all;
-}
-
-void
-Player::set_approximate_size ()
+shared_ptr<PlayerVideo>
+Player::black_player_video_frame (DCPTime time) const
 {
-       _approximate_size = true;
-}
-
-shared_ptr<PlayerVideoFrame>
-Player::black_player_video_frame () const
-{
-       return shared_ptr<PlayerVideoFrame> (
-               new PlayerVideoFrame (
-                       shared_ptr<const ImageProxy> (new RawImageProxy (_black_image, _film->log ())),
+       return shared_ptr<PlayerVideo> (
+               new PlayerVideo (
+                       shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
+                       time,
                        Crop (),
+                       optional<float> (),
                        _video_container_size,
                        _video_container_size,
-                       Scaler::from_id ("bicubic"),
                        EYES_BOTH,
                        PART_WHOLE,
                        Config::instance()->colour_conversions().front().conversion
@@ -309,113 +312,78 @@ Player::black_player_video_frame () const
        );
 }
 
-shared_ptr<PlayerVideoFrame>
-Player::content_to_player_video_frame (
-       shared_ptr<VideoContent> content,
-       ContentVideo content_video,
-       list<shared_ptr<Piece> > subs,
-       DCPTime time,
-       dcp::Size image_size) const
-{
-       shared_ptr<PlayerVideoFrame> pvf (
-               new PlayerVideoFrame (
-                       content_video.image,
-                       content->crop (),
-                       image_size,
-                       _video_container_size,
-                       _film->scaler(),
-                       content_video.eyes,
-                       content_video.part,
-                       content->colour_conversion ()
-                       )
-               );
-       
-       
-       /* Add subtitles */
-       
-       list<PositionImage> sub_images;
-       
-       for (list<shared_ptr<Piece> >::const_iterator i = subs.begin(); i != subs.end(); ++i) {
-               shared_ptr<SubtitleDecoder> subtitle_decoder = dynamic_pointer_cast<SubtitleDecoder> ((*i)->decoder);
-               shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*i)->content);
-               ContentTime const from = dcp_to_content_subtitle (*i, time);
-               ContentTime const to = from + ContentTime::from_frames (1, content->video_frame_rate ());
-               
-               list<shared_ptr<ContentImageSubtitle> > image_subtitles = subtitle_decoder->get_image_subtitles (ContentTimePeriod (from, to));
-               if (!image_subtitles.empty ()) {
-                       list<PositionImage> im = process_content_image_subtitles (
-                               subtitle_content,
-                               image_subtitles
-                               );
-                       
-                       copy (im.begin(), im.end(), back_inserter (sub_images));
-               }
-               
-               if (_burn_subtitles) {
-                       list<shared_ptr<ContentTextSubtitle> > text_subtitles = subtitle_decoder->get_text_subtitles (ContentTimePeriod (from, to));
-                       if (!text_subtitles.empty ()) {
-                               list<PositionImage> im = process_content_text_subtitles (text_subtitles);
-                               copy (im.begin(), im.end(), back_inserter (sub_images));
-                       }
-               }
-       }
-       
-       if (!sub_images.empty ()) {
-               pvf->set_subtitle (merge (sub_images));
-       }
-
-       return pvf;
-}
-
-/** @return All PlayerVideoFrames at the given time (there may be two frames for 3D) */
-list<shared_ptr<PlayerVideoFrame> >
+/** @return All PlayerVideos at the given time (there may be two frames for 3D) */
+list<shared_ptr<PlayerVideo> >
 Player::get_video (DCPTime time, bool accurate)
 {
        if (!_have_valid_pieces) {
                setup_pieces ();
        }
-       
+
        list<shared_ptr<Piece> > ov = overlaps<VideoContent> (
                time,
                time + DCPTime::from_frames (1, _film->video_frame_rate ())
                );
 
-       list<shared_ptr<PlayerVideoFrame> > pvf;
-               
+       list<shared_ptr<PlayerVideo> > pvf;
+
        if (ov.empty ()) {
                /* No video content at this time */
-               pvf.push_back (black_player_video_frame ());
-               return pvf;
+               pvf.push_back (black_player_video_frame (time));
+       } else {
+               /* Create a PlayerVideo from the content's video at this time */
+
+               shared_ptr<Piece> piece = ov.back ();
+               shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
+               DCPOMATIC_ASSERT (decoder);
+               shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
+               DCPOMATIC_ASSERT (content);
+
+               list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
+               if (content_video.empty ()) {
+                       pvf.push_back (black_player_video_frame (time));
+                       return pvf;
+               }
+               
+               dcp::Size image_size = content->scale().size (content, _video_container_size, _film->frame_size ());
+
+               for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
+                       pvf.push_back (
+                               shared_ptr<PlayerVideo> (
+                                       new PlayerVideo (
+                                               i->image,
+                                               content_video_to_dcp (piece, i->frame),
+                                               content->crop (),
+                                               content->fade (i->frame),
+                                               image_size,
+                                               _video_container_size,
+                                               i->eyes,
+                                               i->part,
+                                               content->colour_conversion ()
+                                               )
+                                       )
+                               );
+               }
        }
 
-       /* Create a PlayerVideoFrame from the content's video at this time */
+       /* Add subtitles (for possible burn-in) to whatever PlayerVideos we got */
 
-       shared_ptr<Piece> piece = ov.back ();
-       shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
-       assert (decoder);
-       shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
-       assert (content);
+       PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false);
 
-       list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
-       if (content_video.empty ()) {
-               pvf.push_back (black_player_video_frame ());
-               return pvf;
-       }
+       list<PositionImage> sub_images;
 
-       dcp::Size image_size = content->scale().size (content, _video_container_size, _film->frame_size ());
-       if (_approximate_size) {
-               image_size.width &= ~3;
-               image_size.height &= ~3;
-       }
+       /* Image subtitles */
+       list<PositionImage> c = transform_image_subtitles (ps.image);
+       copy (c.begin(), c.end(), back_inserter (sub_images));
 
-       for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
-               list<shared_ptr<Piece> > subs = overlaps<SubtitleContent> (
-                       time,
-                       time + DCPTime::from_frames (1, _film->video_frame_rate ())
-                       );
-               
-               pvf.push_back (content_to_player_video_frame (content, *i, subs, time, image_size));
-       }
+       /* Text subtitles (rendered to images) */
+       sub_images.push_back (render_subtitles (ps.text, _video_container_size));
+       
+       if (!sub_images.empty ()) {
+               for (list<shared_ptr<PlayerVideo> >::const_iterator i = pvf.begin(); i != pvf.end(); ++i) {
+                       (*i)->set_subtitle (merge (sub_images));
+               }
+       }       
                
        return pvf;
 }
@@ -440,9 +408,9 @@ Player::get_audio (DCPTime time, DCPTime length, bool accurate)
        for (list<shared_ptr<Piece> >::iterator i = ov.begin(); i != ov.end(); ++i) {
 
                shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> ((*i)->content);
-               assert (content);
+               DCPOMATIC_ASSERT (content);
                shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
-               assert (decoder);
+               DCPOMATIC_ASSERT (decoder);
 
                if (content->audio_frame_rate() == 0) {
                        /* This AudioContent has no audio (e.g. if it is an FFmpegContent with no
@@ -453,19 +421,24 @@ Player::get_audio (DCPTime time, DCPTime length, bool accurate)
 
                /* The time that we should request from the content */
                DCPTime request = time - DCPTime::from_seconds (content->audio_delay() / 1000.0);
+               AudioFrame request_frames = length_frames;
                DCPTime offset;
                if (request < DCPTime ()) {
                        /* We went off the start of the content, so we will need to offset
                           the stuff we get back.
                        */
                        offset = -request;
+                       request_frames += request.frames (_film->audio_frame_rate ());
+                       if (request_frames < 0) {
+                               request_frames = 0;
+                       }
                        request = DCPTime ();
                }
 
                AudioFrame const content_frame = dcp_to_content_audio (*i, request);
 
                /* Audio from this piece's decoder (which might be more or less than what we asked for) */
-               shared_ptr<ContentAudio> all = decoder->get_audio (content_frame, length_frames, accurate);
+               shared_ptr<ContentAudio> all = decoder->get_audio (content_frame, request_frames, accurate);
 
                /* Gain */
                if (content->audio_gain() != 0) {
@@ -497,9 +470,11 @@ Player::get_audio (DCPTime time, DCPTime length, bool accurate)
                        all->audio.get(),
                        content_frame - all->frame,
                        offset.frames (_film->audio_frame_rate()),
-                       min (AudioFrame (all->audio->frames()), length_frames) - offset.frames (_film->audio_frame_rate ())
+                       min (AudioFrame (all->audio->frames()), request_frames)
                        );
        }
+
+       return audio;
 }
 
 VideoFrame
@@ -507,11 +482,22 @@ Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
 {
        /* s is the offset of t from the start position of this content */
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (int64_t (0), s.get ()));
+       s = DCPTime (max (DCPTime::Type (0), s.get ()));
        s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
 
        /* Convert this to the content frame */
-       return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) * piece->frc.factor ();
+       return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) / piece->frc.factor ();
+}
+
+DCPTime
+Player::content_video_to_dcp (shared_ptr<const Piece> piece, VideoFrame f) const
+{
+       DCPTime t = DCPTime::from_frames (f * piece->frc.factor (), _film->video_frame_rate()) - piece->content->trim_start () + piece->content->position ();
+       if (t < DCPTime ()) {
+               t = DCPTime ();
+       }
+
+       return t;
 }
 
 AudioFrame
@@ -519,7 +505,7 @@ Player::dcp_to_content_audio (shared_ptr<const Piece> piece, DCPTime t) const
 {
        /* s is the offset of t from the start position of this content */
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (int64_t (0), s.get ()));
+       s = DCPTime (max (DCPTime::Type (0), s.get ()));
        s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
 
        /* Convert this to the content frame */
@@ -531,7 +517,7 @@ Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
 {
        /* s is the offset of t from the start position of this content */
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (int64_t (0), s.get ()));
+       s = DCPTime (max (DCPTime::Type (0), s.get ()));
        s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
 
        return ContentTime (s + piece->content->trim_start(), piece->frc);
@@ -549,3 +535,81 @@ Player::statistics () const
 {
        return _statistics;
 }
+
+PlayerSubtitles
+Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
+{
+       list<shared_ptr<Piece> > subs = overlaps<SubtitleContent> (time, time + length);
+
+       PlayerSubtitles ps (time, length);
+
+       for (list<shared_ptr<Piece> >::const_iterator j = subs.begin(); j != subs.end(); ++j) {
+               shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*j)->content);
+               if (!subtitle_content->use_subtitles ()) {
+                       continue;
+               }
+
+               shared_ptr<SubtitleDecoder> subtitle_decoder = dynamic_pointer_cast<SubtitleDecoder> ((*j)->decoder);
+               ContentTime const from = dcp_to_content_subtitle (*j, time);
+               /* XXX: this video_frame_rate() should be the rate that the subtitle content has been prepared for */
+               ContentTime const to = from + ContentTime::from_frames (1, _film->video_frame_rate ());
+
+               list<ContentImageSubtitle> image = subtitle_decoder->get_image_subtitles (ContentTimePeriod (from, to), starting);
+               for (list<ContentImageSubtitle>::iterator i = image.begin(); i != image.end(); ++i) {
+                       
+                       /* Apply content's subtitle offsets */
+                       i->sub.rectangle.x += subtitle_content->subtitle_x_offset ();
+                       i->sub.rectangle.y += subtitle_content->subtitle_y_offset ();
+
+                       /* Apply content's subtitle scale */
+                       i->sub.rectangle.width *= subtitle_content->subtitle_x_scale ();
+                       i->sub.rectangle.height *= subtitle_content->subtitle_y_scale ();
+
+                       /* Apply a corrective translation to keep the subtitle centred after that scale */
+                       i->sub.rectangle.x -= i->sub.rectangle.width * (subtitle_content->subtitle_x_scale() - 1);
+                       i->sub.rectangle.y -= i->sub.rectangle.height * (subtitle_content->subtitle_y_scale() - 1);
+                       
+                       ps.image.push_back (i->sub);
+               }
+
+               list<ContentTextSubtitle> text = subtitle_decoder->get_text_subtitles (ContentTimePeriod (from, to), starting);
+               BOOST_FOREACH (ContentTextSubtitle& ts, text) {
+                       BOOST_FOREACH (dcp::SubtitleString& s, ts.subs) {
+                               s.set_v_position (s.v_position() + subtitle_content->subtitle_y_offset ());
+                               s.set_size (s.size() * max (subtitle_content->subtitle_x_scale(), subtitle_content->subtitle_y_scale()));
+                               ps.text.push_back (s);
+                       }
+               }
+       }
+
+       return ps;
+}
+
+list<shared_ptr<Font> >
+Player::get_subtitle_fonts ()
+{
+       if (!_have_valid_pieces) {
+               setup_pieces ();
+       }
+
+       list<shared_ptr<Font> > fonts;
+       BOOST_FOREACH (shared_ptr<Piece>& p, _pieces) {
+               shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (p->content);
+               if (sc) {
+                       /* XXX: things may go wrong if there are duplicate font IDs
+                          with different font files.
+                       */
+                       list<shared_ptr<Font> > f = sc->fonts ();
+                       copy (f.begin(), f.end(), back_inserter (fonts));
+               }
+       }
+
+       return fonts;
+}
+
+/** Set this player never to produce any video data */
+void
+Player::set_ignore_video ()
+{
+       _ignore_video = true;
+}