/*
- Copyright (C) 2012-2014 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 "image.h"
-#include "content_video.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;
+using namespace dcpomatic;
-VideoDecoder::VideoDecoder (shared_ptr<const VideoContent> c)
- : _video_content (c)
+VideoDecoder::VideoDecoder (Decoder* parent, shared_ptr<const Content> c)
+ : DecoderPart (parent)
+ , _content (c)
{
}
-optional<ContentVideo>
-VideoDecoder::decoded_video (VideoFrame frame)
+/** 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::emit (shared_ptr<const Film> film, shared_ptr<const ImageProxy> image, Frame decoder_frame)
{
- for (list<ContentVideo>::const_iterator i = _decoded_video.begin(); i != _decoded_video.end(); ++i) {
- if (i->frame == frame) {
- return *i;
- }
+ if (ignore ()) {
+ return;
}
- return optional<ContentVideo> ();
-}
+ /* Before we `re-write' the frame indexes of these incoming data we need to check for
+ the case where the user has some 2D content which they have marked as 3D. With 3D
+ we should get two frames for each frame index, but in this `bad' case we only get
+ one. We need to throw an exception if this happens.
+ */
-optional<ContentVideo>
-VideoDecoder::get_video (VideoFrame frame, bool accurate)
-{
- if (_decoded_video.empty() || (frame < _decoded_video.front().frame || frame > (_decoded_video.back().frame + 1))) {
- /* Either we have no decoded data, or what we do have is a long way from what we want: seek */
- seek (ContentTime::from_frames (frame, _video_content->video_frame_rate()), accurate);
+ if (_content->video->frame_type() == VIDEO_FRAME_TYPE_3D) {
+ if (_last_threed_frames.size() > 4) {
+ _last_threed_frames.erase (_last_threed_frames.begin());
+ }
+ _last_threed_frames.push_back (decoder_frame);
+ if (_last_threed_frames.size() == 4) {
+ if (_last_threed_frames[0] != _last_threed_frames[1] || _last_threed_frames[2] != _last_threed_frames[3]) {
+ 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)
+ )
+ )
+ );
+ }
+ }
}
- optional<ContentVideo> dec;
-
- /* Now enough pass() calls will either:
- * (a) give us what we want, or
- * (b) hit the end of the decoder.
- */
- if (accurate) {
- /* We are being accurate, so we want the right frame */
- while (!decoded_video (frame) && !pass ()) {}
- dec = decoded_video (frame);
+ double const afr = _content->active_video_frame_rate(film);
+
+ Frame frame;
+ Eyes eyes = EYES_BOTH;
+ if (!_position) {
+ /* This is the first data we have received since initialisation or seek. Set
+ the position based on the frame that was given. After this first time
+ we just cound frames, since (as with audio) it seems that ContentTimes
+ are unreliable from FFmpegDecoder. They are much better than audio times
+ but still we get the occasional one which is duplicated. In this case
+ ffmpeg seems to carry on regardless, processing the video frame as normal.
+ If we drop the frame with the duplicated timestamp we obviously lose sync.
+ */
+ _position = ContentTime::from_frames (decoder_frame, afr);
+ if (_content->video->frame_type() == VIDEO_FRAME_TYPE_3D_ALTERNATE) {
+ frame = decoder_frame / 2;
+ _last_emitted_eyes = EYES_RIGHT;
+ } else {
+ frame = decoder_frame;
+ }
} else {
- /* Any frame will do: use the first one that comes out of pass() */
- while (_decoded_video.empty() && !pass ()) {}
- if (!_decoded_video.empty ()) {
- dec = _decoded_video.front ();
+ VideoFrameType const ft = _content->video->frame_type ();
+ if (ft == VIDEO_FRAME_TYPE_3D_ALTERNATE || ft == VIDEO_FRAME_TYPE_3D) {
+ DCPOMATIC_ASSERT (_last_emitted_eyes);
+ if (_last_emitted_eyes.get() == EYES_RIGHT) {
+ frame = _position->frames_round(afr) + 1;
+ eyes = EYES_LEFT;
+ } else {
+ frame = _position->frames_round(afr);
+ eyes = EYES_RIGHT;
+ }
+ } else {
+ frame = _position->frames_round(afr) + 1;
}
}
- /* Clean up decoded_video */
- while (!_decoded_video.empty() && _decoded_video.front().frame < (frame - 1)) {
- _decoded_video.pop_front ();
- }
-
- return dec;
-}
-
-
-/** Called by subclasses when they have a video frame ready */
-void
-VideoDecoder::video (shared_ptr<const Image> image, VideoFrame frame)
-{
- /* Fill in gaps */
- /* XXX: 3D */
- while (!_decoded_video.empty () && (_decoded_video.back().frame + 1) < frame) {
- _decoded_video.push_back (
- ContentVideo (
- _decoded_video.back().image,
- _decoded_video.back().eyes,
- _decoded_video.back().frame + 1
- )
- );
- }
-
- switch (_video_content->video_frame_type ()) {
+ switch (_content->video->frame_type ()) {
case VIDEO_FRAME_TYPE_2D:
- _decoded_video.push_back (ContentVideo (image, EYES_BOTH, frame));
- break;
- case VIDEO_FRAME_TYPE_3D_ALTERNATE:
- _decoded_video.push_back (ContentVideo (image, (frame % 2) ? EYES_RIGHT : EYES_LEFT, frame));
+ Data (ContentVideo (image, frame, EYES_BOTH, PART_WHOLE));
break;
- case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
+ case VIDEO_FRAME_TYPE_3D:
{
- int const half = image->size().width / 2;
- _decoded_video.push_back (ContentVideo (image->crop (Crop (0, half, 0, 0), true), EYES_LEFT, frame));
- _decoded_video.push_back (ContentVideo (image->crop (Crop (half, 0, 0, 0), true), EYES_RIGHT, frame));
+ Data (ContentVideo (image, frame, eyes, PART_WHOLE));
+ _last_emitted_frame = frame;
+ _last_emitted_eyes = eyes;
break;
}
- case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
+ case VIDEO_FRAME_TYPE_3D_ALTERNATE:
{
- int const half = image->size().height / 2;
- _decoded_video.push_back (ContentVideo (image->crop (Crop (0, 0, 0, half), true), EYES_LEFT, frame));
- _decoded_video.push_back (ContentVideo (image->crop (Crop (0, 0, half, 0), true), EYES_RIGHT, frame));
+ Data (ContentVideo (image, frame, eyes, PART_WHOLE));
+ _last_emitted_eyes = eyes;
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:
- assert (false);
+ DCPOMATIC_ASSERT (false);
}
+
+ _position = ContentTime::from_frames (frame, afr);
}
void
-VideoDecoder::seek (ContentTime, bool)
+VideoDecoder::seek ()
{
- _decoded_video.clear ();
+ _position = boost::optional<ContentTime>();
+ _last_emitted_frame.reset ();
+ _last_emitted_eyes.reset ();
}
-
projects / dcpomatic.git / blobdiff