Revert "Use make_shared<>."
[dcpomatic.git] / src / lib / video_decoder.cc
index 761de0701fea8d1151f75bbd8b07534b3a59636c..edc746010f082a0558617763798544b750a940d1 100644 (file)
@@ -1,19 +1,20 @@
 /*
     Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+    DCP-o-matic is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
@@ -58,7 +59,7 @@ VideoDecoder::decoded (Frame frame)
        list<ContentVideo> output;
 
        BOOST_FOREACH (ContentVideo const & i, _decoded) {
-               if (i.frame == frame) {
+               if (i.frame.index() == frame) {
                        output.push_back (i);
                }
        }
@@ -85,10 +86,12 @@ VideoDecoder::get (Frame frame, bool accurate)
 
        _log->log (String::compose ("VD has request for %1", frame), LogEntry::TYPE_DEBUG_DECODE);
 
-       if (_decoded.empty() || frame < _decoded.front().frame || frame > (_decoded.back().frame + 1)) {
+       if (_decoded.empty() || frame < _decoded.front().frame.index() || frame > (_decoded.back().frame.index() + 1)) {
                _parent->seek (ContentTime::from_frames (frame, _content->active_video_frame_rate()), accurate);
        }
 
+       unsigned int const frames_wanted = _content->video->frame_type() == VIDEO_FRAME_TYPE_2D ? 1 : 2;
+
        list<ContentVideo> dec;
 
        /* Now enough pass() calls should either:
@@ -103,7 +106,7 @@ VideoDecoder::get (Frame frame, bool accurate)
                bool no_data = false;
 
                while (true) {
-                       if (!decoded(frame).empty ()) {
+                       if (decoded(frame).size() == frames_wanted) {
                                /* We got what we want */
                                break;
                        }
@@ -114,7 +117,7 @@ VideoDecoder::get (Frame frame, bool accurate)
                                break;
                        }
 
-                       if (!_decoded.empty() && _decoded.front().frame > frame) {
+                       if (!_decoded.empty() && _decoded.front().frame.index() > frame) {
                                /* We're never going to get the frame we want.  Perhaps the caller is asking
                                 * for a video frame before the content's video starts (if its audio
                                 * begins before its video, for example).
@@ -130,16 +133,20 @@ VideoDecoder::get (Frame frame, bool accurate)
                }
 
        } else {
-               /* Any frame will do: use the first one that comes out of pass() */
-               while (_decoded.empty() && !_parent->pass (Decoder::PASS_REASON_VIDEO, accurate)) {}
-               if (!_decoded.empty ()) {
-                       dec.push_back (_decoded.front ());
+               /* Any frame(s) will do: use the first one(s) that comes out of pass() */
+               while (_decoded.size() < frames_wanted && !_parent->pass (Decoder::PASS_REASON_VIDEO, accurate)) {}
+               list<ContentVideo>::const_iterator i = _decoded.begin();
+               unsigned int j = 0;
+               while (i != _decoded.end() && j < frames_wanted) {
+                       dec.push_back (*i);
+                       ++i;
+                       ++j;
                }
        }
 
        /* Clean up _decoded; keep the frame we are returning, if any (which may have two images
           for 3D), but nothing before that */
-       while (!_decoded.empty() && !dec.empty() && _decoded.front().frame < dec.front().frame) {
+       while (!_decoded.empty() && !dec.empty() && _decoded.front().frame.index() < dec.front().frame.index()) {
                _decoded.pop_front ();
        }
 
@@ -173,7 +180,7 @@ VideoDecoder::fill_one_eye (Frame from, Frame to, Eyes eye)
                test_gaps++;
 #endif
                _decoded.push_back (
-                       ContentVideo (filler_image, eye, filler_part, i)
+                       ContentVideo (filler_image, VideoFrame (i, eye), filler_part)
                        );
        }
 }
@@ -182,13 +189,8 @@ VideoDecoder::fill_one_eye (Frame from, Frame to, Eyes eye)
  *  adding both left and right eye frames.
  */
 void
-VideoDecoder::fill_both_eyes (Frame from, Frame to, Eyes eye)
+VideoDecoder::fill_both_eyes (VideoFrame from, VideoFrame to)
 {
-       if (to == 0 && eye == EYES_LEFT) {
-               /* Already OK */
-               return;
-       }
-
        /* Fill with black... */
        shared_ptr<const ImageProxy> filler_left_image (new RawImageProxy (_black_image));
        shared_ptr<const ImageProxy> filler_right_image (new RawImageProxy (_black_image));
@@ -197,10 +199,10 @@ VideoDecoder::fill_both_eyes (Frame from, Frame to, Eyes eye)
 
        /* ...unless there's some video we can fill with */
        for (list<ContentVideo>::const_reverse_iterator i = _decoded.rbegin(); i != _decoded.rend(); ++i) {
-               if (i->eyes == EYES_LEFT && !filler_left_image) {
+               if (i->frame.eyes() == EYES_LEFT && !filler_left_image) {
                        filler_left_image = i->image;
                        filler_left_part = i->part;
-               } else if (i->eyes == EYES_RIGHT && !filler_right_image) {
+               } else if (i->frame.eyes() == EYES_RIGHT && !filler_right_image) {
                        filler_right_image = i->image;
                        filler_right_part = i->part;
                }
@@ -210,21 +212,7 @@ VideoDecoder::fill_both_eyes (Frame from, Frame to, Eyes eye)
                }
        }
 
-       Frame filler_frame = from;
-       Eyes filler_eye = _decoded.empty() ? EYES_LEFT : _decoded.back().eyes;
-
-       if (_decoded.empty ()) {
-               filler_frame = 0;
-               filler_eye = EYES_LEFT;
-       } else if (_decoded.back().eyes == EYES_LEFT) {
-               filler_frame = _decoded.back().frame;
-               filler_eye = EYES_RIGHT;
-       } else if (_decoded.back().eyes == EYES_RIGHT) {
-               filler_frame = _decoded.back().frame + 1;
-               filler_eye = EYES_LEFT;
-       }
-
-       while (filler_frame != to || filler_eye != eye) {
+       while (from != to) {
 
 #ifdef DCPOMATIC_DEBUG
                test_gaps++;
@@ -232,19 +220,13 @@ VideoDecoder::fill_both_eyes (Frame from, Frame to, Eyes eye)
 
                _decoded.push_back (
                        ContentVideo (
-                               filler_eye == EYES_LEFT ? filler_left_image : filler_right_image,
-                               filler_eye,
-                               filler_eye == EYES_LEFT ? filler_left_part : filler_right_part,
-                               filler_frame
+                               from.eyes() == EYES_LEFT ? filler_left_image : filler_right_image,
+                               from,
+                               from.eyes() == EYES_LEFT ? filler_left_part : filler_right_part
                                )
                        );
 
-               if (filler_eye == EYES_LEFT) {
-                       filler_eye = EYES_RIGHT;
-               } else {
-                       filler_eye = EYES_LEFT;
-                       ++filler_frame;
-               }
+               ++from;
        }
 }
 
@@ -262,30 +244,31 @@ VideoDecoder::give (shared_ptr<const ImageProxy> image, Frame frame)
        list<ContentVideo> to_push;
        switch (_content->video->frame_type ()) {
        case VIDEO_FRAME_TYPE_2D:
-               to_push.push_back (ContentVideo (image, EYES_BOTH, PART_WHOLE, frame));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_BOTH), PART_WHOLE));
                break;
+       case VIDEO_FRAME_TYPE_3D:
        case VIDEO_FRAME_TYPE_3D_ALTERNATE:
        {
                /* We receive the same frame index twice for 3D-alternate; hence we know which
                   frame this one is.
                */
-               bool const same = (!_decoded.empty() && frame == _decoded.back().frame);
-               to_push.push_back (ContentVideo (image, same ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, frame));
+               bool const same = (!_decoded.empty() && frame == _decoded.back().frame.index());
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, same ? EYES_RIGHT : EYES_LEFT), PART_WHOLE));
                break;
        }
        case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
-               to_push.push_back (ContentVideo (image, EYES_LEFT, PART_LEFT_HALF, frame));
-               to_push.push_back (ContentVideo (image, EYES_RIGHT, PART_RIGHT_HALF, frame));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_LEFT), PART_LEFT_HALF));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_RIGHT), PART_RIGHT_HALF));
                break;
        case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
-               to_push.push_back (ContentVideo (image, EYES_LEFT, PART_TOP_HALF, frame));
-               to_push.push_back (ContentVideo (image, EYES_RIGHT, PART_BOTTOM_HALF, frame));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_LEFT), PART_TOP_HALF));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_RIGHT), PART_BOTTOM_HALF));
                break;
        case VIDEO_FRAME_TYPE_3D_LEFT:
-               to_push.push_back (ContentVideo (image, EYES_LEFT, PART_WHOLE, frame));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_LEFT), PART_WHOLE));
                break;
        case VIDEO_FRAME_TYPE_3D_RIGHT:
-               to_push.push_back (ContentVideo (image, EYES_RIGHT, PART_WHOLE, frame));
+               to_push.push_back (ContentVideo (image, VideoFrame (frame, EYES_RIGHT), PART_WHOLE));
                break;
        default:
                DCPOMATIC_ASSERT (false);
@@ -296,40 +279,42 @@ VideoDecoder::give (shared_ptr<const ImageProxy> image, Frame frame)
           and the things we are about to push.
        */
 
-       optional<Frame> from;
-       optional<Frame> to;
+       optional<VideoFrame> from;
 
        if (_decoded.empty() && _last_seek_time && _last_seek_accurate) {
-               from = _last_seek_time->frames_round (_content->active_video_frame_rate ());
-               to = to_push.front().frame;
+               from = VideoFrame (
+                       _last_seek_time->frames_round (_content->active_video_frame_rate ()),
+                       _content->video->frame_type() == VIDEO_FRAME_TYPE_2D ? EYES_BOTH : EYES_LEFT
+                       );
        } else if (!_decoded.empty ()) {
-               from = _decoded.back().frame + 1;
-               to = to_push.front().frame;
+               from = _decoded.back().frame;
+               ++(*from);
        }
 
        /* If we've pre-rolled on a seek we may now receive out-of-order frames
           (frames before the last seek time) which we can just ignore.
        */
 
-       if (from && to && from.get() > to.get()) {
+       if (from && (*from) > to_push.front().frame) {
                return;
        }
 
        if (from) {
                switch (_content->video->frame_type ()) {
                case VIDEO_FRAME_TYPE_2D:
-                       fill_one_eye (from.get(), to.get (), EYES_BOTH);
+                       fill_one_eye (from->index(), to_push.front().frame.index(), EYES_BOTH);
                        break;
+               case VIDEO_FRAME_TYPE_3D:
                case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
                case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
                case VIDEO_FRAME_TYPE_3D_ALTERNATE:
-                       fill_both_eyes (from.get(), to.get(), to_push.front().eyes);
+                       fill_both_eyes (from.get(), to_push.front().frame);
                        break;
                case VIDEO_FRAME_TYPE_3D_LEFT:
-                       fill_one_eye (from.get(), to.get (), EYES_LEFT);
+                       fill_one_eye (from->index(), to_push.front().frame.index(), EYES_LEFT);
                        break;
                case VIDEO_FRAME_TYPE_3D_RIGHT:
-                       fill_one_eye (from.get(), to.get (), EYES_RIGHT);
+                       fill_one_eye (from->index(), to_push.front().frame.index(), EYES_RIGHT);
                        break;
                }
        }