summaryrefslogtreecommitdiff
path: root/src/lib/matcher.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/matcher.cc')
-rw-r--r--src/lib/matcher.cc113
1 files changed, 0 insertions, 113 deletions
diff --git a/src/lib/matcher.cc b/src/lib/matcher.cc
deleted file mode 100644
index 2b7a080fc..000000000
--- a/src/lib/matcher.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
-
- 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
- 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,
- 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.
-
-*/
-
-#include "matcher.h"
-#include "image.h"
-#include "log.h"
-
-using std::min;
-using boost::shared_ptr;
-
-Matcher::Matcher (Log* log, int sample_rate, float frames_per_second)
- : AudioVideoProcessor (log)
- , _sample_rate (sample_rate)
- , _frames_per_second (frames_per_second)
- , _video_frames (0)
- , _audio_frames (0)
-{
-
-}
-
-void
-Matcher::process_video (boost::shared_ptr<Image> i, bool same, boost::shared_ptr<Subtitle> s)
-{
- Video (i, same, s);
- _video_frames++;
-
- _pixel_format = i->pixel_format ();
- _size = i->size ();
-}
-
-void
-Matcher::process_audio (boost::shared_ptr<AudioBuffers> b)
-{
- Audio (b);
- _audio_frames += b->frames ();
-
- _channels = b->channels ();
-}
-
-void
-Matcher::process_end ()
-{
- if (_audio_frames == 0 || !_pixel_format || !_size || !_channels) {
- /* We won't do anything */
- return;
- }
-
- int64_t audio_short_by_frames = video_frames_to_audio_frames (_video_frames, _sample_rate, _frames_per_second) - _audio_frames;
-
- _log->log (
- String::compose (
- "Matching processor has seen %1 video frames (which equals %2 audio frames) and %3 audio frames",
- _video_frames,
- video_frames_to_audio_frames (_video_frames, _sample_rate, _frames_per_second),
- _audio_frames
- )
- );
-
- if (audio_short_by_frames < 0) {
-
- _log->log (String::compose ("%1 too many audio frames", -audio_short_by_frames));
-
- /* We have seen more audio than video. Emit enough black video frames so that we reverse this */
- int const black_video_frames = ceil (-audio_short_by_frames * _frames_per_second / _sample_rate);
-
- _log->log (String::compose ("Emitting %1 frames of black video", black_video_frames));
-
- shared_ptr<Image> black (new SimpleImage (_pixel_format.get(), _size.get(), false));
- black->make_black ();
- for (int i = 0; i < black_video_frames; ++i) {
- Video (black, i != 0, shared_ptr<Subtitle>());
- }
-
- /* Now recompute our check value */
- audio_short_by_frames = video_frames_to_audio_frames (_video_frames, _sample_rate, _frames_per_second) - _audio_frames;
- }
-
- if (audio_short_by_frames > 0) {
- _log->log (String::compose ("Emitted %1 too few audio frames", audio_short_by_frames));
-
- /* Do things in half second blocks as I think there may be limits
- to what FFmpeg (and in particular the resampler) can cope with.
- */
- int64_t const block = _sample_rate / 2;
- shared_ptr<AudioBuffers> b (new AudioBuffers (_channels.get(), block));
- b->make_silent ();
-
- int64_t to_do = audio_short_by_frames;
- while (to_do > 0) {
- int64_t const this_time = min (to_do, block);
- b->set_frames (this_time);
- Audio (b);
- _audio_frames += b->frames ();
- to_do -= this_time;
- }
- }
-}