Missing files.

1 files changed, 81 insertions, 0 deletions

diff --git a/src/lib/matcher.cc b/src/lib/matcher.cc
new file mode 100644
index 000000000..f6eff168b
--- /dev/null
+++ b/src/lib/matcher.cc
@@ -0,0 +1,81 @@
+#include "matcher.h"
+#include "image.h"
+#include "log.h"
+
+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, boost::shared_ptr<Subtitle> s)
+{
+	Video (i, 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 CompactImage (_pixel_format.get(), _size.get()));
+		black->make_black ();
+		for (int i = 0; i < black_video_frames; ++i) {
+			Video (black, 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));
+		shared_ptr<AudioBuffers> b (new AudioBuffers (_channels.get(), audio_short_by_frames));
+		b->make_silent ();
+		Audio (b);
+		_audio_frames += b->frames ();
+	}
+}