-/** 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.
- */
-list<ContentVideo>
-VideoDecoder::get (Frame frame, bool accurate)
-{
- if (_no_data_frame && frame >= _no_data_frame.get()) {
- return list<ContentVideo> ();
- }
-
- _log->log (String::compose ("VD has request for %1", frame), LogEntry::TYPE_DEBUG_DECODE);
-
- /* See if we have frame, and suggest a seek if not */
- list<ContentVideo>::const_iterator i = _decoded.begin ();
- while (i != _decoded.end() && i->frame.index() != frame) {
- ++i;
- }
- if (i == _decoded.end()) {
- Frame seek_frame = frame;
- if (_content->video->frame_type() == VIDEO_FRAME_TYPE_3D_ALTERNATE) {
- /* 3D alternate is a special case as the frame index in the content is not the same
- as the frame index we are talking about here.
- */
- seek_frame *= 2;
- }
- _log->log (String::compose ("VD suggests seek to %1", seek_frame), LogEntry::TYPE_DEBUG_DECODE);
- maybe_seek (ContentTime::from_frames (seek_frame, _content->active_video_frame_rate()), accurate);
- }
-
- /* Work out the number of frames that we should return; we
- must return all frames in our content at the requested `time'
- (i.e. frame)
- */
- unsigned int frames_wanted = 0;
- switch (_content->video->frame_type()) {
- case VIDEO_FRAME_TYPE_2D:
- case VIDEO_FRAME_TYPE_3D_LEFT:
- case VIDEO_FRAME_TYPE_3D_RIGHT:
- frames_wanted = 1;
- break;
- case VIDEO_FRAME_TYPE_3D:
- case VIDEO_FRAME_TYPE_3D_ALTERNATE:
- case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
- case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
- frames_wanted = 2;
- break;
- default:
- DCPOMATIC_ASSERT (false);
- }
-
- 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.
- */
- bool no_data = false;
-
- while (true) {
- if (decoded(frame).size() == frames_wanted) {
- /* We got what we want */
- break;
- }