X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fvideo_decoder.cc;h=f68f0815c1f156c75421d853049e712b21c337be;hb=6f344b876689a1234a5eb75041882f06f5d9fe5c;hp=9b27055c73ba737b00fa86f55ed8a41bfe7b9c1e;hpb=58f0530b1687673ea6e24a083063c3fdf2bff0b2;p=dcpomatic.git diff --git a/src/lib/video_decoder.cc b/src/lib/video_decoder.cc index 9b27055c7..f68f0815c 100644 --- a/src/lib/video_decoder.cc +++ b/src/lib/video_decoder.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2012-2014 Carl Hetherington + Copyright (C) 2012-2016 Carl Hetherington This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -19,9 +19,11 @@ #include "video_decoder.h" #include "image.h" -#include "image_proxy.h" #include "raw_image_proxy.h" -#include "content_video.h" +#include "film.h" +#include "log.h" +#include "compose.hpp" +#include #include "i18n.h" @@ -32,24 +34,26 @@ using std::back_inserter; using boost::shared_ptr; using boost::optional; -VideoDecoder::VideoDecoder (shared_ptr c) +VideoDecoder::VideoDecoder (shared_ptr c, shared_ptr log) #ifdef DCPOMATIC_DEBUG : test_gaps (0) , _video_content (c) #else : _video_content (c) #endif - , _same (false) + , _log (log) + , _last_seek_accurate (true) + , _ignore_video (false) { - _black_image.reset (new Image (PIX_FMT_RGB24, _video_content->video_size(), true)); + _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_content->video_size(), true)); _black_image->make_black (); } list -VideoDecoder::decoded_video (VideoFrame frame) +VideoDecoder::decoded_video (Frame frame) { list output; - + for (list::const_iterator i = _decoded_video.begin(); i != _decoded_video.end(); ++i) { if (i->frame == frame) { output.push_back (*i); @@ -65,13 +69,19 @@ VideoDecoder::decoded_video (VideoFrame frame) * @return Frames; there may be none (if there is no video there), 1 for 2D or 2 for 3D. */ list -VideoDecoder::get_video (VideoFrame frame, bool accurate) +VideoDecoder::get_video (Frame frame, bool accurate) { + if (_no_data_frame && frame >= _no_data_frame.get()) { + return list (); + } + /* 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. */ - + + _log->log (String::compose ("VD has request for %1", frame), LogEntry::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); } @@ -87,14 +97,17 @@ VideoDecoder::get_video (VideoFrame frame, bool 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_video(frame).empty ()) { /* We got what we want */ break; } - if (pass ()) { + if (pass (PASS_REASON_VIDEO, accurate)) { /* The decoder has nothing more for us */ + no_data = true; break; } @@ -108,34 +121,42 @@ VideoDecoder::get_video (VideoFrame frame, bool accurate) } dec = decoded_video (frame); + + if (no_data && dec.empty()) { + _no_data_frame = frame; + } + } else { /* Any frame will do: use the first one that comes out of pass() */ - while (_decoded_video.empty() && !pass ()) {} + while (_decoded_video.empty() && !pass (PASS_REASON_VIDEO, accurate)) {} 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 + /* Clean up _decoded_video; keep the frame we are returning, if any (which may have two images for 3D), but nothing before that */ - while (!_decoded_video.empty() && _decoded_video.front().frame < dec.front().frame) { + while (!_decoded_video.empty() && !dec.empty() && _decoded_video.front().frame < dec.front().frame) { _decoded_video.pop_front (); } return dec; } -/** Fill _decoded_video up to, but not including, the specified frame */ +/** 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) + */ void -VideoDecoder::fill_up_to_2d (VideoFrame frame) +VideoDecoder::fill_one_eye (Frame from, Frame to, Eyes eye) { - if (frame == 0) { + if (to == 0) { /* Already OK */ return; } /* Fill with black... */ - boost::shared_ptr filler_image (new RawImageProxy (_black_image)); + shared_ptr filler_image (new RawImageProxy (_black_image)); Part filler_part = PART_WHOLE; /* ...unless there's some video we can fill with */ @@ -144,33 +165,30 @@ VideoDecoder::fill_up_to_2d (VideoFrame frame) filler_part = _decoded_video.back().part; } - VideoFrame filler_frame = _decoded_video.empty() ? 0 : (_decoded_video.back().frame + 1); - while (filler_frame < frame) { - + for (Frame i = from; i < to; ++i) { #ifdef DCPOMATIC_DEBUG test_gaps++; #endif - _decoded_video.push_back ( - ContentVideo (filler_image, EYES_BOTH, filler_part, filler_frame) + ContentVideo (filler_image, eye, filler_part, i) ); - - ++filler_frame; } } -/** Fill _decoded_video up to, but not including, the specified frame and eye */ +/** Fill _decoded_video from `from' up to, but not including, `to' + * adding both left and right eye frames. + */ void -VideoDecoder::fill_up_to_3d (VideoFrame frame, Eyes eye) +VideoDecoder::fill_both_eyes (Frame from, Frame to, Eyes eye) { - if (frame == 0 && eye == EYES_LEFT) { + if (to == 0 && eye == EYES_LEFT) { /* Already OK */ return; } /* Fill with black... */ - boost::shared_ptr filler_left_image (new RawImageProxy (_black_image)); - boost::shared_ptr filler_right_image (new RawImageProxy (_black_image)); + shared_ptr filler_left_image (new RawImageProxy (_black_image)); + shared_ptr filler_right_image (new RawImageProxy (_black_image)); Part filler_left_part = PART_WHOLE; Part filler_right_part = PART_WHOLE; @@ -189,7 +207,7 @@ VideoDecoder::fill_up_to_3d (VideoFrame frame, Eyes eye) } } - VideoFrame filler_frame = _decoded_video.empty() ? 0 : _decoded_video.back().frame; + Frame filler_frame = from; Eyes filler_eye = _decoded_video.empty() ? EYES_LEFT : _decoded_video.back().eyes; if (_decoded_video.empty ()) { @@ -203,7 +221,7 @@ VideoDecoder::fill_up_to_3d (VideoFrame frame, Eyes eye) filler_eye = EYES_LEFT; } - while (filler_frame != frame || filler_eye != eye) { + while (filler_frame != to || filler_eye != eye) { #ifdef DCPOMATIC_DEBUG test_gaps++; @@ -226,15 +244,16 @@ VideoDecoder::fill_up_to_3d (VideoFrame frame, Eyes eye) } } } - + /** Called by subclasses when they have a video frame ready */ void -VideoDecoder::video (shared_ptr image, VideoFrame frame) +VideoDecoder::video (shared_ptr 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); + if (_ignore_video) { + return; + } + + _log->log (String::compose ("VD receives %1", frame), LogEntry::TYPE_DEBUG_DECODE); /* Work out what we are going to push into _decoded_video next */ list to_push; @@ -243,8 +262,14 @@ VideoDecoder::video (shared_ptr image, VideoFrame frame) to_push.push_back (ContentVideo (image, EYES_BOTH, PART_WHOLE, frame)); break; case VIDEO_FRAME_TYPE_3D_ALTERNATE: - to_push.push_back (ContentVideo (image, _same ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, frame)); + { + /* We receive the same frame index twice for 3D-alternate; hence we know which + frame this one is. + */ + bool const same = (!_decoded_video.empty() && frame == _decoded_video.back().frame); + to_push.push_back (ContentVideo (image, same ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, frame)); break; + } case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT: to_push.push_back (ContentVideo (image, EYES_LEFT, PART_LEFT_HALF, frame)); to_push.push_back (ContentVideo (image, EYES_RIGHT, PART_RIGHT_HALF, frame)); @@ -260,7 +285,7 @@ VideoDecoder::video (shared_ptr image, VideoFrame frame) to_push.push_back (ContentVideo (image, EYES_RIGHT, PART_WHOLE, frame)); break; default: - assert (false); + DCPOMATIC_ASSERT (false); } /* Now VideoDecoder is required never to have gaps in the frames that it presents @@ -268,18 +293,67 @@ VideoDecoder::video (shared_ptr image, VideoFrame frame) and the things we are about to push. */ - if (_video_content->video_frame_type() == VIDEO_FRAME_TYPE_2D) { - fill_up_to_2d (to_push.front().frame); - } else { - fill_up_to_3d (to_push.front().frame, to_push.front().eyes); + optional from; + optional to; + + if (_decoded_video.empty() && _last_seek_time && _last_seek_accurate) { + from = _last_seek_time->frames_round (_video_content->video_frame_rate ()); + to = to_push.front().frame; + } else if (!_decoded_video.empty ()) { + from = _decoded_video.back().frame + 1; + to = to_push.front().frame; + } + + /* If we've pre-rolled on a seek we may now receive out-of-order frames + (frames before the last seek time) which we can just ignore. + */ + + if (from && to && from.get() > to.get()) { + return; + } + + if (from) { + switch (_video_content->video_frame_type ()) { + case VIDEO_FRAME_TYPE_2D: + fill_one_eye (from.get(), to.get (), EYES_BOTH); + break; + case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT: + case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM: + case VIDEO_FRAME_TYPE_3D_ALTERNATE: + fill_both_eyes (from.get(), to.get(), to_push.front().eyes); + break; + case VIDEO_FRAME_TYPE_3D_LEFT: + fill_one_eye (from.get(), to.get (), EYES_LEFT); + break; + case VIDEO_FRAME_TYPE_3D_RIGHT: + fill_one_eye (from.get(), to.get (), EYES_RIGHT); + break; + } } copy (to_push.begin(), to_push.end(), back_inserter (_decoded_video)); + + /* We can't let this build up too much or we will run out of memory. There is a + `best' value for the allowed size of _decoded_video which balances memory use + with decoding efficiency (lack of seeks). Throwing away video frames here + is not a problem for correctness, so do it. + */ + while (_decoded_video.size() > 96) { + _decoded_video.pop_back (); + } } void -VideoDecoder::seek (ContentTime, bool) +VideoDecoder::seek (ContentTime s, bool accurate) { _decoded_video.clear (); + _last_seek_time = s; + _last_seek_accurate = accurate; } +/** Set this player never to produce any video data */ +void +VideoDecoder::set_ignore_video () +{ + _ignore_video = true; +}