/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2018 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/>.
*/
#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 <boost/foreach.hpp>
+#include <iostream>
#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<const Film> f, shared_ptr<const VideoContent> 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<const Content> c, shared_ptr<Log> 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> image, bool same, Time t)
+VideoDecoder::emit (shared_ptr<const ImageProxy> image, Frame frame)
{
- if (_frame_rate_conversion.skip && _odd) {
- _odd = !_odd;
+ if (ignore ()) {
return;
}
- image = image->crop (_video_content->crop(), true);
-
- shared_ptr<const Film> 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<Image> out = image->scale_and_convert_to_rgb (image_size, film->scaler(), true);
-
- shared_ptr<Subtitle> 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<Image> 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<Image> 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<TimedSubtitle> 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<const Film> 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<const Film> film = _film.lock ();
- assert (film);
- _next_video -= film->video_frames_to_time (1);
-}
-void
-VideoDecoder::seek_forward ()
-{
- shared_ptr<const Film> 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 ();
}
projects / dcpomatic.git / blobdiff