/*
- 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;
-VideoDecoder::VideoDecoder (shared_ptr<const VideoContent> c)
-#ifdef DCPOMATIC_DEBUG
- : test_gaps (0)
- , _video_content (c)
-#else
- : _video_content (c)
-#endif
- , _same (false)
-{
-
-}
-
-list<ContentVideo>
-VideoDecoder::decoded_video (VideoFrame frame)
+VideoDecoder::VideoDecoder (Decoder* parent, shared_ptr<const Content> c)
+ : DecoderPart (parent)
+ , _content (c)
{
- list<ContentVideo> output;
-
- for (list<ContentVideo>::const_iterator i = _decoded_video.begin(); i != _decoded_video.end(); ++i) {
- if (i->frame == frame) {
- output.push_back (*i);
- }
- }
- return output;
}
-/** Get all frames which exist in the content at a given frame index.
- * @param frame Frame index.
- * @param accurate true to try hard to return frames at the precise time that was requested, otherwise frames nearby may be returned.
- * @return Frames; there may be none (if there is no video there), 1 for 2D or 2 for 3D.
+/** 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.
*/
-list<ContentVideo>
-VideoDecoder::get_video (VideoFrame frame, bool accurate)
-{
- /* At this stage, if we have get_video()ed before, _decoded_video will contain the last frame that this
- method returned (and possibly a few more). If the requested frame is not in _decoded_video and it is not the next
- one after the end of _decoded_video we need to seek.
- */
-
- if (_decoded_video.empty() || frame < _decoded_video.front().frame || frame > (_decoded_video.back().frame + 1)) {
- seek (ContentTime::from_frames (frame, _video_content->video_frame_rate()), accurate);
- }
-
- list<ContentVideo> dec;
-
- /* Now enough pass() calls should either:
- * (a) give us what we want, or
- * (b) give us something after what we want, indicating that we will never get what we want, or
- * (c) hit the end of the decoder.
- */
- if (accurate) {
- /* We are being accurate, so we want the right frame.
- * This could all be one statement but it's split up for clarity.
- */
- while (true) {
- if (!decoded_video(frame).empty ()) {
- /* We got what we want */
- break;
- }
-
- if (pass ()) {
- /* The decoder has nothing more for us */
- break;
- }
-
- if (!_decoded_video.empty() && _decoded_video.front().frame > frame) {
- /* We're never going to get the frame we want. Perhaps the caller is asking
- * for a video frame before the content's video starts (if its audio
- * begins before its video, for example).
- */
- break;
- }
- }
-
- dec = decoded_video (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.push_back (_decoded_video.front ());
- }
- }
-
- /* Clean up _decoded_video; keep the frame we are returning, but nothing before that */
- while (!_decoded_video.empty() && _decoded_video.front().frame < dec.front().frame) {
- _decoded_video.pop_front ();
- }
-
- return dec;
-}
-
-
-/** Called by subclasses when they have a video frame ready */
void
-VideoDecoder::video (shared_ptr<const ImageProxy> image, VideoFrame frame)
+VideoDecoder::emit (shared_ptr<const Film> film, shared_ptr<const ImageProxy> image, Frame frame)
{
- /* We may receive the same frame index twice for 3D, and we need to know
- when that happens.
- */
- _same = (!_decoded_video.empty() && frame == _decoded_video.back().frame);
-
- /* Fill in gaps */
- /* XXX: 3D */
-
- while (!_decoded_video.empty () && (_decoded_video.back().frame + 1) < frame) {
-#ifdef DCPOMATIC_DEBUG
- test_gaps++;
-#endif
- _decoded_video.push_back (
- ContentVideo (
- _decoded_video.back().image,
- _decoded_video.back().eyes,
- _decoded_video.back().part,
- _decoded_video.back().frame + 1
- )
- );
+ if (ignore ()) {
+ return;
}
-
- switch (_video_content->video_frame_type ()) {
+
+ switch (_content->video->frame_type ()) {
case VIDEO_FRAME_TYPE_2D:
- _decoded_video.push_back (ContentVideo (image, EYES_BOTH, PART_WHOLE, frame));
+ Data (ContentVideo (image, frame, EYES_BOTH, PART_WHOLE));
+ break;
+ case VIDEO_FRAME_TYPE_3D:
+ {
+ /* We should receive the same frame index twice for 3D; hence we know which
+ frame this one is.
+ */
+ bool const same = (_last_emitted_frame && _last_emitted_frame.get() == frame);
+ if (!same && _last_emitted_eyes && *_last_emitted_eyes == EYES_LEFT) {
+ /* We just got a new frame index but the last frame was left-eye; it looks like
+ this content is not really 3D.
+ */
+ 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)
+ )
+ )
+ );
+ }
+ Eyes const eyes = same ? EYES_RIGHT : EYES_LEFT;
+ Data (ContentVideo (image, frame, eyes, PART_WHOLE));
+ _last_emitted_frame = frame;
+ _last_emitted_eyes = eyes;
break;
+ }
case VIDEO_FRAME_TYPE_3D_ALTERNATE:
- _decoded_video.push_back (ContentVideo (image, _same ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, frame));
+ Data (ContentVideo (image, frame / 2, (frame % 2) ? EYES_RIGHT : EYES_LEFT, PART_WHOLE));
+ frame /= 2;
break;
case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
- _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_LEFT_HALF, frame));
- _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_RIGHT_HALF, frame));
+ 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:
- _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_TOP_HALF, frame));
- _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_BOTTOM_HALF, frame));
+ 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:
- _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_WHOLE, frame));
+ Data (ContentVideo (image, frame, EYES_LEFT, PART_WHOLE));
break;
case VIDEO_FRAME_TYPE_3D_RIGHT:
- _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_WHOLE, frame));
+ Data (ContentVideo (image, frame, EYES_RIGHT, PART_WHOLE));
break;
default:
- assert (false);
+ DCPOMATIC_ASSERT (false);
}
+
+ _position = ContentTime::from_frames (frame, _content->active_video_frame_rate(film));
}
void
-VideoDecoder::seek (ContentTime, bool)
+VideoDecoder::seek ()
{
- _decoded_video.clear ();
+ _position = ContentTime();
+ _last_emitted_frame.reset ();
+ _last_emitted_eyes.reset ();
}
-
projects / dcpomatic.git / blobdiff