X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fvideo_decoder.cc;h=3a88911118e4054bf2c2d2eecae6b59a50fa055a;hb=c4b409be0183508431e7ddbe4ad9bafe1f78a88e;hp=16a076698eff8c652061a693dc95960f38e0cf9e;hpb=6d21165ff96f354933ee32ce2ce31ee5ecc48598;p=dcpomatic.git diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc index 16a076698..c628fddd9 100644 --- a/src/lib/video_decoder.cc +++ b/src/lib/video_decoder.cc @@ -1,94 +1,140 @@ /* - Copyright (C) 2012 Carl Hetherington + Copyright (C) 2012-2021 Carl Hetherington - 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 . */ -#include "video_decoder.h" -#include "subtitle.h" -#include "film.h" + +#include "compose.hpp" +#include "frame_interval_checker.h" #include "image.h" +#include "j2k_image_proxy.h" #include "log.h" -#include "options.h" -#include "job.h" +#include "raw_image_proxy.h" +#include "video_decoder.h" +#include #include "i18n.h" + using std::cout; -using boost::shared_ptr; -using boost::optional; +using std::dynamic_pointer_cast; +using std::shared_ptr; +using namespace dcpomatic; + -VideoDecoder::VideoDecoder (shared_ptr f, DecodeOptions o) - : Decoder (f, o) - , _video_frame (0) - , _last_source_time (0) +VideoDecoder::VideoDecoder (Decoder* parent, shared_ptr c) + : DecoderPart (parent) + , _content (c) + , _frame_interval_checker (new FrameIntervalChecker()) { } -/** Called by subclasses to tell the world that some video data is ready. - * We find a subtitle then emit it for listeners. - * @param image frame to emit. - * @param t Time of the frame within the source, in seconds. - */ + +/** Called by decoder classes when they have a video frame ready */ void -VideoDecoder::emit_video (shared_ptr image, bool same, double t) +VideoDecoder::emit(shared_ptr film, shared_ptr image, ContentTime time) { - shared_ptr sub; - if (_timed_subtitle && _timed_subtitle->displayed_at (t)) { - sub = _timed_subtitle->subtitle (); + if (ignore ()) { + return; } - Video (image, same, sub, t); - ++_video_frame; - - _last_source_time = t; -} + auto const afr = _content->active_video_frame_rate(film); + auto const vft = _content->video->frame_type(); -/** Set up the current subtitle. This will be put onto frames that - * fit within its time specification. s may be 0 to say that there - * is no current subtitle. - * @param s New current subtitle, or 0. - */ -void -VideoDecoder::emit_subtitle (shared_ptr s) -{ - _timed_subtitle = s; - - if (_timed_subtitle) { - Position const p = _timed_subtitle->subtitle()->position (); - _timed_subtitle->subtitle()->set_position (Position (p.x - _film->crop().left, p.y - _film->crop().top)); + /* Do some heuristics to try and spot the case where the user sets content to 3D + * when it is not. We try to tell this by looking at the differences in time between + * the first few frames. Real 3D content should have two frames for each timestamp. + */ + if (_frame_interval_checker) { + _frame_interval_checker->feed(time, afr); + if (_frame_interval_checker->guess() == FrameIntervalChecker::PROBABLY_NOT_3D && vft == VideoFrameType::THREE_D) { + boost::throw_exception ( + DecodeError( + String::compose( + _("The content file %1 is set as 3D but does not appear to contain 3D images. Please set it to 2D. " + "You can still make a 3D DCP from this content by ticking the 3D option in the DCP video tab."), + _content->path(0) + ) + ) + ); + } + + if (_frame_interval_checker->guess() != FrameIntervalChecker::AGAIN) { + _frame_interval_checker.reset (); + } } -} -/** Set which stream of subtitles we should use from our source. - * @param s Stream to use. - */ -void -VideoDecoder::set_subtitle_stream (shared_ptr s) -{ - _subtitle_stream = s; + switch (vft) { + case VideoFrameType::TWO_D: + Data(ContentVideo(image, time, Eyes::BOTH, Part::WHOLE)); + break; + case VideoFrameType::THREE_D: + { + auto eyes = Eyes::LEFT; + auto j2k = dynamic_pointer_cast(image); + if (j2k && j2k->eye()) { + eyes = *j2k->eye() == dcp::Eye::LEFT ? Eyes::LEFT : Eyes::RIGHT; + } + + Data(ContentVideo(image, time, eyes, Part::WHOLE)); + break; + } + case VideoFrameType::THREE_D_ALTERNATE: + { + Eyes eyes; + if (_last_emitted_eyes) { + eyes = _last_emitted_eyes.get() == Eyes::LEFT ? Eyes::RIGHT : Eyes::LEFT; + } else { + /* We don't know what eye this frame is, so just guess */ + auto frame = time.frames_round(_content->video_frame_rate().get_value_or(24)); + eyes = (frame % 2) ? Eyes::RIGHT : Eyes::LEFT; + } + Data(ContentVideo(image, time, eyes, Part::WHOLE)); + _last_emitted_eyes = eyes; + break; + } + case VideoFrameType::THREE_D_LEFT_RIGHT: + Data(ContentVideo(image, time, Eyes::LEFT, Part::LEFT_HALF)); + Data(ContentVideo(image, time, Eyes::RIGHT, Part::RIGHT_HALF)); + break; + case VideoFrameType::THREE_D_TOP_BOTTOM: + Data(ContentVideo(image, time, Eyes::LEFT, Part::TOP_HALF)); + Data(ContentVideo(image, time, Eyes::RIGHT, Part::BOTTOM_HALF)); + break; + case VideoFrameType::THREE_D_LEFT: + Data(ContentVideo(image, time, Eyes::LEFT, Part::WHOLE)); + break; + case VideoFrameType::THREE_D_RIGHT: + Data(ContentVideo(image, time, Eyes::RIGHT, Part::WHOLE)); + break; + default: + DCPOMATIC_ASSERT (false); + } + + _position = time; } + void -VideoDecoder::set_progress (Job* j) const +VideoDecoder::seek () { - assert (j); - - if (_film->length()) { - j->set_progress (float (_video_frame) / _film->length().get()); - } + _position = boost::none; + _last_emitted_eyes.reset (); + _frame_interval_checker.reset (new FrameIntervalChecker()); }