- _video_content->film()->log()->log (String::compose ("VD has request for %1", frame), Log::TYPE_DEBUG_DECODE);
-
- 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 (which may have two images
- for 3D), but nothing before that */
- while (!_decoded_video.empty() && _decoded_video.front().frame < dec.front().frame) {
- _decoded_video.pop_front ();
- }
-
- return dec;
-}
-
-/** Fill _decoded_video from `from' up to, but not including, `to' with
- * a frame for one particular Eyes value (which could be EYES_BOTH,
- * EYES_LEFT or EYES_RIGHT)