Add support for no-scale of the input video.
[dcpomatic.git] / src / lib / player.cc
index b5a96163182b458acf00a58661be273251ceab60..99aece8d660d5c67c1140410868b6bdd32d3b9f5 100644 (file)
 #include "film.h"
 #include "ffmpeg_decoder.h"
 #include "ffmpeg_content.h"
-#include "still_image_decoder.h"
-#include "still_image_content.h"
-#include "moving_image_decoder.h"
-#include "moving_image_content.h"
+#include "image_decoder.h"
+#include "image_content.h"
 #include "sndfile_decoder.h"
 #include "sndfile_content.h"
 #include "subtitle_content.h"
@@ -64,6 +62,8 @@ public:
                , decoder (d)
                , video_position (c->position ())
                , audio_position (c->position ())
+               , repeat_to_do (0)
+               , repeat_done (0)
        {}
 
        /** Set this piece to repeat a video frame a given number of times */
@@ -146,7 +146,6 @@ Player::pass ()
 {
        if (!_have_valid_pieces) {
                setup_pieces ();
-               _have_valid_pieces = true;
        }
 
        Time earliest_t = TIME_MAX;
@@ -227,7 +226,8 @@ Player::pass ()
                                continue;
                        }
 
-                       if (dynamic_pointer_cast<AudioDecoder> ((*i)->decoder)) {
+                       shared_ptr<AudioDecoder> ad = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
+                       if (ad && ad->has_audio ()) {
                                audio_done_up_to = min (audio_done_up_to.get_value_or (TIME_MAX), (*i)->audio_position);
                        }
                }
@@ -272,40 +272,38 @@ Player::process_video (weak_ptr<Piece> weak_piece, shared_ptr<const Image> image
                return;
        }
 
-       /* Convert to RGB first, as FFmpeg doesn't seem to like handling YUV images with odd widths */
-       shared_ptr<Image> work_image = image->scale (image->size (), _film->scaler(), PIX_FMT_RGB24, true);
-
-       work_image = work_image->crop (content->crop(), true);
+       Time const time = content->position() + relative_time + extra - content->trim_start ();
+       libdcp::Size const image_size = content->scale().size (content, _video_container_size);
 
-       float const ratio = content->ratio() ? content->ratio()->ratio() : content->video_size_after_crop().ratio();
-       libdcp::Size image_size = fit_ratio_within (ratio, _video_container_size);
+       shared_ptr<PlayerImage> pi (
+               new PlayerImage (
+                       image,
+                       content->crop(),
+                       image_size,
+                       _video_container_size,
+                       _film->scaler()
+                       )
+               );
        
-       work_image = work_image->scale (image_size, _film->scaler(), PIX_FMT_RGB24, true);
-
-       Time time = content->position() + relative_time + extra - content->trim_start ();
-           
        if (_film->with_subtitles () && _out_subtitle.image && time >= _out_subtitle.from && time <= _out_subtitle.to) {
-               work_image->alpha_blend (_out_subtitle.image, _out_subtitle.position);
-       }
 
-       if (image_size != _video_container_size) {
-               assert (image_size.width <= _video_container_size.width);
-               assert (image_size.height <= _video_container_size.height);
-               shared_ptr<Image> im (new Image (PIX_FMT_RGB24, _video_container_size, true));
-               im->make_black ();
-               im->copy (work_image, Position<int> ((_video_container_size.width - image_size.width) / 2, (_video_container_size.height - image_size.height) / 2));
-               work_image = im;
-       }
+               Position<int> const container_offset (
+                       (_video_container_size.width - image_size.width) / 2,
+                       (_video_container_size.height - image_size.width) / 2
+                       );
 
+               pi->set_subtitle (_out_subtitle.image, _out_subtitle.position + container_offset);
+       }
+               
+                                           
 #ifdef DCPOMATIC_DEBUG
        _last_video = piece->content;
 #endif
 
-       Video (work_image, eyes, content->colour_conversion(), same, time);
+       Video (pi, eyes, content->colour_conversion(), same, time);
 
-       time += TIME_HZ / _film->video_frame_rate();
        _last_emit_was_black = false;
-       _video_position = piece->video_position = time;
+       _video_position = piece->video_position = (time + TIME_HZ / _film->video_frame_rate());
 
        if (frc.repeat > 1 && !piece->repeating ()) {
                piece->set_repeat (_last_incoming_video, frc.repeat - 1);
@@ -349,10 +347,18 @@ Player::process_audio (weak_ptr<Piece> weak_piece, shared_ptr<const AudioBuffers
        /* Remap channels */
        shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), audio->frames()));
        dcp_mapped->make_silent ();
-       list<pair<int, libdcp::Channel> > map = content->audio_mapping().content_to_dcp ();
-       for (list<pair<int, libdcp::Channel> >::iterator i = map.begin(); i != map.end(); ++i) {
-               if (i->first < audio->channels() && i->second < dcp_mapped->channels()) {
-                       dcp_mapped->accumulate_channel (audio.get(), i->first, i->second);
+
+       AudioMapping map = content->audio_mapping ();
+       for (int i = 0; i < map.content_channels(); ++i) {
+               for (int j = 0; j < _film->audio_channels(); ++j) {
+                       if (map.get (i, static_cast<libdcp::Channel> (j)) > 0) {
+                               dcp_mapped->accumulate_channel (
+                                       audio.get(),
+                                       i,
+                                       static_cast<libdcp::Channel> (j),
+                                       map.get (i, static_cast<libdcp::Channel> (j))
+                                       );
+                       }
                }
        }
 
@@ -380,16 +386,16 @@ void
 Player::flush ()
 {
        TimedAudioBuffers<Time> tb = _audio_merger.flush ();
-       if (tb.audio) {
+       if (_audio && tb.audio) {
                Audio (tb.audio, tb.time);
                _audio_position += _film->audio_frames_to_time (tb.audio->frames ());
        }
 
-       while (_video_position < _audio_position) {
+       while (_video && _video_position < _audio_position) {
                emit_black ();
        }
 
-       while (_audio_position < _video_position) {
+       while (_audio && _audio_position < _video_position) {
                emit_silence (_film->time_to_audio_frames (_video_position - _audio_position));
        }
        
@@ -404,7 +410,6 @@ Player::seek (Time t, bool accurate)
 {
        if (!_have_valid_pieces) {
                setup_pieces ();
-               _have_valid_pieces = true;
        }
 
        if (_pieces.empty ()) {
@@ -450,6 +455,10 @@ Player::setup_pieces ()
 
        for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
 
+               if (!(*i)->paths_valid ()) {
+                       continue;
+               }
+
                shared_ptr<Piece> piece (new Piece (*i));
 
                /* XXX: into content? */
@@ -466,36 +475,24 @@ Player::setup_pieces ()
                        piece->decoder = fd;
                }
                
-               shared_ptr<const StillImageContent> ic = dynamic_pointer_cast<const StillImageContent> (*i);
+               shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
                if (ic) {
-                       shared_ptr<StillImageDecoder> id;
+                       bool reusing = false;
                        
-                       /* See if we can re-use an old StillImageDecoder */
+                       /* See if we can re-use an old ImageDecoder */
                        for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
-                               shared_ptr<StillImageDecoder> imd = dynamic_pointer_cast<StillImageDecoder> ((*j)->decoder);
+                               shared_ptr<ImageDecoder> imd = dynamic_pointer_cast<ImageDecoder> ((*j)->decoder);
                                if (imd && imd->content() == ic) {
-                                       id = imd;
+                                       piece = *j;
+                                       reusing = true;
                                }
                        }
 
-                       if (!id) {
-                               id.reset (new StillImageDecoder (_film, ic));
+                       if (!reusing) {
+                               shared_ptr<ImageDecoder> id (new ImageDecoder (_film, ic));
                                id->Video.connect (bind (&Player::process_video, this, weak_ptr<Piece> (piece), _1, _2, _3, _4, 0));
+                               piece->decoder = id;
                        }
-
-                       piece->decoder = id;
-               }
-
-               shared_ptr<const MovingImageContent> mc = dynamic_pointer_cast<const MovingImageContent> (*i);
-               if (mc) {
-                       shared_ptr<MovingImageDecoder> md;
-
-                       if (!md) {
-                               md.reset (new MovingImageDecoder (_film, mc));
-                               md->Video.connect (bind (&Player::process_video, this, weak_ptr<Piece> (piece), _1, _2, _3, _4, 0));
-                       }
-
-                       piece->decoder = md;
                }
 
                shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
@@ -508,6 +505,8 @@ Player::setup_pieces ()
 
                _pieces.push_back (piece);
        }
+
+       _have_valid_pieces = true;
 }
 
 void
@@ -520,26 +519,32 @@ Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
 
        if (
                property == ContentProperty::POSITION || property == ContentProperty::LENGTH ||
-               property == ContentProperty::TRIM_START || property == ContentProperty::TRIM_END
+               property == ContentProperty::TRIM_START || property == ContentProperty::TRIM_END ||
+               property == VideoContentProperty::VIDEO_FRAME_TYPE 
                ) {
                
                _have_valid_pieces = false;
                Changed (frequent);
 
-       } else if (property == SubtitleContentProperty::SUBTITLE_OFFSET || property == SubtitleContentProperty::SUBTITLE_SCALE) {
+       } else if (
+               property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
+               property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
+               property == SubtitleContentProperty::SUBTITLE_SCALE
+               ) {
 
                update_subtitle ();
                Changed (frequent);
 
        } else if (
-               property == VideoContentProperty::VIDEO_FRAME_TYPE || property == VideoContentProperty::VIDEO_CROP ||
-               property == VideoContentProperty::VIDEO_RATIO
+               property == VideoContentProperty::VIDEO_CROP || property == VideoContentProperty::VIDEO_SCALE ||
+               property == VideoContentProperty::VIDEO_FRAME_RATE
                ) {
                
                Changed (frequent);
 
        } else if (property == ContentProperty::PATH) {
 
+               _have_valid_pieces = false;
                Changed (frequent);
        }
 }
@@ -555,8 +560,19 @@ void
 Player::set_video_container_size (libdcp::Size s)
 {
        _video_container_size = s;
-       _black_frame.reset (new Image (PIX_FMT_RGB24, _video_container_size, true));
-       _black_frame->make_black ();
+
+       shared_ptr<Image> im (new Image (PIX_FMT_RGB24, _video_container_size, true));
+       im->make_black ();
+       
+       _black_frame.reset (
+               new PlayerImage (
+                       im,
+                       Crop(),
+                       _video_container_size,
+                       _video_container_size,
+                       Scaler::from_id ("bicubic")
+                       )
+               );
 }
 
 shared_ptr<Resampler>
@@ -616,7 +632,7 @@ Player::film_changed (Film::Property p)
           last time we were run.
        */
 
-       if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER) {
+       if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
                Changed (false);
        }
 }
@@ -652,7 +668,8 @@ Player::update_subtitle ()
        dcpomatic::Rect<double> in_rect = _in_subtitle.rect;
        libdcp::Size scaled_size;
 
-       in_rect.y += sc->subtitle_offset ();
+       in_rect.x += sc->subtitle_x_offset ();
+       in_rect.y += sc->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 * sc->subtitle_scale ();
@@ -679,8 +696,18 @@ Player::update_subtitle ()
                _in_subtitle.image->pixel_format (),
                true
                );
-       _out_subtitle.from = _in_subtitle.from + piece->content->position ();
-       _out_subtitle.to = _in_subtitle.to + piece->content->position ();
+
+       /* XXX: hack */
+       Time from = _in_subtitle.from;
+       Time to = _in_subtitle.to;
+       shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (piece->content);
+       if (vc) {
+               from = rint (from * vc->video_frame_rate() / _film->video_frame_rate());
+               to = rint (to * vc->video_frame_rate() / _film->video_frame_rate());
+       }
+       
+       _out_subtitle.from = from + piece->content->position ();
+       _out_subtitle.to = to + piece->content->position ();
 }
 
 /** Re-emit the last frame that was emitted, using current settings for crop, ratio, scaler and subtitles.
@@ -689,7 +716,7 @@ Player::update_subtitle ()
 bool
 Player::repeat_last_video ()
 {
-       if (!_last_incoming_video.image) {
+       if (!_last_incoming_video.image || !_have_valid_pieces) {
                return false;
        }
 
@@ -704,3 +731,40 @@ Player::repeat_last_video ()
 
        return true;
 }
+
+PlayerImage::PlayerImage (
+       shared_ptr<const Image> in,
+       Crop crop,
+       libdcp::Size inter_size,
+       libdcp::Size out_size,
+       Scaler const * scaler
+       )
+       : _in (in)
+       , _crop (crop)
+       , _inter_size (inter_size)
+       , _out_size (out_size)
+       , _scaler (scaler)
+{
+
+}
+
+void
+PlayerImage::set_subtitle (shared_ptr<const Image> image, Position<int> pos)
+{
+       _subtitle_image = image;
+       _subtitle_position = pos;
+}
+
+shared_ptr<Image>
+PlayerImage::image ()
+{
+       shared_ptr<Image> out = _in->crop_scale_window (_crop, _inter_size, _out_size, _scaler, PIX_FMT_RGB24, false);
+
+       Position<int> const container_offset ((_out_size.width - _inter_size.width) / 2, (_out_size.height - _inter_size.width) / 2);
+
+       if (_subtitle_image) {
+               out->alpha_blend (_subtitle_image, _subtitle_position);
+       }
+
+       return out;
+}