X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fvideo_decoder.cc;h=3625e074fba0460fc63729a00bc30c446f7d769b;hb=bd12a72f78409e3f482be3d47b5efb57af4ad982;hp=58aceb4077cfc4ebfc9fdecc0bf2e2b90ad90681;hpb=4699463e19b2a153d64aeb0e00c62be1157bfc1b;p=dcpomatic.git diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc index 58aceb407..3625e074f 100644 --- a/src/lib/video_decoder.cc +++ b/src/lib/video_decoder.cc @@ -1,151 +1,106 @@ /* - Copyright (C) 2012 Carl Hetherington + Copyright (C) 2012-2018 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 "image.h" -#include "ratio.h" +#include "raw_image_proxy.h" +#include "film.h" +#include "log.h" +#include "compose.hpp" +#include +#include #include "i18n.h" using std::cout; +using std::list; +using std::max; +using std::back_inserter; using boost::shared_ptr; +using boost::optional; -VideoDecoder::VideoDecoder (shared_ptr f, shared_ptr c) - : Decoder (f) - , _next_video (0) - , _video_content (c) - , _frame_rate_conversion (c->video_frame_rate(), f->dcp_video_frame_rate()) - , _odd (false) +VideoDecoder::VideoDecoder (Decoder* parent, shared_ptr c, shared_ptr log) + : DecoderPart (parent, log) + , _content (c) { } -/** Called by subclasses when some video is ready. - * @param image frame to emit. - * @param same true if this frame is the same as the last one passed to this call. - * @param t Time of the frame within the source. +/** Called by decoder classes when they have a video frame ready. + * @param frame Frame index within the content; this does not take into account 3D + * so for 3D_ALTERNATE this value goes: + * 0: frame 0 left + * 1: frame 0 right + * 2: frame 1 left + * 3: frame 1 right + * and so on. */ void -VideoDecoder::video (shared_ptr image, bool same, Time t) +VideoDecoder::emit (shared_ptr image, Frame frame) { - if (_frame_rate_conversion.skip && _odd) { - _odd = !_odd; + if (ignore ()) { return; } - image = image->crop (_video_content->crop(), true); - - shared_ptr film = _film.lock (); - assert (film); - - libdcp::Size const container_size = _video_container_size.get_value_or (film->container()->size (film->full_frame ())); - libdcp::Size const image_size = _video_content->ratio()->size (container_size); - - shared_ptr out = image->scale_and_convert_to_rgb (image_size, film->scaler(), true); - - shared_ptr sub; - if (_timed_subtitle && _timed_subtitle->displayed_at (t)) { - sub = _timed_subtitle->subtitle (); - } - - if (sub) { - dcpomatic::Rect const tx = subtitle_transformed_area ( - float (image_size.width) / video_size().width, - float (image_size.height) / video_size().height, - sub->area(), film->subtitle_offset(), film->subtitle_scale() - ); - - shared_ptr im = sub->image()->scale (tx.size(), film->scaler(), true); - out->alpha_blend (im, tx.position()); - } - - if (image_size != container_size) { - assert (image_size.width <= container_size.width); - assert (image_size.height <= container_size.height); - shared_ptr im (new SimpleImage (PIX_FMT_RGB24, container_size, true)); - im->make_black (); - im->copy (out, Position ((container_size.width - image_size.width) / 2, (container_size.height - image_size.height) / 2)); - out = im; - } - - Video (out, same, t); - - if (_frame_rate_conversion.repeat) { - Video (image, true, t + film->video_frames_to_time (1)); - _next_video = t + film->video_frames_to_time (2); - } else { - _next_video = t + film->video_frames_to_time (1); + switch (_content->video->frame_type ()) { + case VIDEO_FRAME_TYPE_2D: + Data (ContentVideo (image, frame, EYES_BOTH, PART_WHOLE)); + break; + case VIDEO_FRAME_TYPE_3D: + { + /* We receive the same frame index twice for 3D; hence we know which + frame this one is. + */ + bool const same = (_last_emitted && _last_emitted.get() == frame); + Data (ContentVideo (image, frame, same ? EYES_RIGHT : EYES_LEFT, PART_WHOLE)); + _last_emitted = frame; + break; } - - _odd = !_odd; -} - -/** Called by subclasses when a subtitle is ready. - * s may be 0 to say that there is no current subtitle. - * @param s New current subtitle, or 0. - */ -void -VideoDecoder::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 - _video_content->crop().left, p.y - _video_content->crop().top)); + case VIDEO_FRAME_TYPE_3D_ALTERNATE: + Data (ContentVideo (image, frame / 2, (frame % 2) ? EYES_RIGHT : EYES_LEFT, PART_WHOLE)); + frame /= 2; + break; + case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT: + Data (ContentVideo (image, frame, EYES_LEFT, PART_LEFT_HALF)); + Data (ContentVideo (image, frame, EYES_RIGHT, PART_RIGHT_HALF)); + break; + case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM: + Data (ContentVideo (image, frame, EYES_LEFT, PART_TOP_HALF)); + Data (ContentVideo (image, frame, EYES_RIGHT, PART_BOTTOM_HALF)); + break; + case VIDEO_FRAME_TYPE_3D_LEFT: + Data (ContentVideo (image, frame, EYES_LEFT, PART_WHOLE)); + break; + case VIDEO_FRAME_TYPE_3D_RIGHT: + Data (ContentVideo (image, frame, EYES_RIGHT, PART_WHOLE)); + break; + default: + DCPOMATIC_ASSERT (false); } -} - -bool -VideoDecoder::video_done () const -{ - shared_ptr film = _film.lock (); - assert (film); - - return (_video_content->length() - _next_video) < film->video_frames_to_time (1); -} - -void -VideoDecoder::seek (Time t) -{ - _next_video = t; -} - -void -VideoDecoder::seek_back () -{ - shared_ptr film = _film.lock (); - assert (film); - _next_video -= film->video_frames_to_time (1); -} -void -VideoDecoder::seek_forward () -{ - shared_ptr film = _film.lock (); - assert (film); - _next_video += film->video_frames_to_time (1); + _position = ContentTime::from_frames (frame, _content->active_video_frame_rate ()); } void -VideoDecoder::set_video_container_size (libdcp::Size s) +VideoDecoder::seek () { - _video_container_size = s; + _position = ContentTime(); + _last_emitted.reset (); }