X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fvideo_decoder.cc;h=64c66ea55caf8bc64adb863aac01966e314820d2;hb=c4b409be0183508431e7ddbe4ad9bafe1f78a88e;hp=e4d5516a17ab020008cd02d7f665727d4f5db46e;hpb=09806bc8d6a48fc79d923ec1cdf6f90176bf8b6a;p=dcpomatic.git diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc index e4d5516a1..c628fddd9 100644 --- a/src/lib/video_decoder.cc +++ b/src/lib/video_decoder.cc @@ -1,61 +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 "compose.hpp" +#include "frame_interval_checker.h" #include "image.h" +#include "j2k_image_proxy.h" +#include "log.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, shared_ptr c) - : Decoder (f) - , _video_content (c) +VideoDecoder::VideoDecoder (Decoder* parent, shared_ptr c) + : DecoderPart (parent) + , _content (c) + , _frame_interval_checker (new FrameIntervalChecker()) { } -/** Called by subclasses when they have a video frame ready */ + +/** Called by decoder classes when they have a video frame ready */ void -VideoDecoder::video (shared_ptr image, bool same, ContentTime time) +VideoDecoder::emit(shared_ptr film, shared_ptr image, ContentTime time) { - switch (_video_content->video_frame_type ()) { - case VIDEO_FRAME_TYPE_2D: - _pending.push_back (shared_ptr (new DecodedVideo (time, image, EYES_BOTH, same))); + if (ignore ()) { + return; + } + + auto const afr = _content->active_video_frame_rate(film); + auto const vft = _content->video->frame_type(); + + /* 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 (); + } + } + + switch (vft) { + case VideoFrameType::TWO_D: + Data(ContentVideo(image, time, Eyes::BOTH, Part::WHOLE)); break; - case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT: + case VideoFrameType::THREE_D: { - int const half = image->size().width / 2; - _pending.push_back (shared_ptr (new DecodedVideo (time, image->crop (Crop (0, half, 0, 0), true), EYES_LEFT, same))); - _pending.push_back (shared_ptr (new DecodedVideo (time, image->crop (Crop (half, 0, 0, 0), true), EYES_RIGHT, same))); + 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 VIDEO_FRAME_TYPE_3D_TOP_BOTTOM: + case VideoFrameType::THREE_D_ALTERNATE: { - int const half = image->size().height / 2; - _pending.push_back (shared_ptr (new DecodedVideo (time, image->crop (Crop (0, 0, 0, half), true), EYES_LEFT, same))); - _pending.push_back (shared_ptr (new DecodedVideo (time, image->crop (Crop (0, 0, half, 0), true), EYES_RIGHT, same))); + 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: - assert (false); + DCPOMATIC_ASSERT (false); } + + _position = time; +} + + +void +VideoDecoder::seek () +{ + _position = boost::none; + _last_emitted_eyes.reset (); + _frame_interval_checker.reset (new FrameIntervalChecker()); }