Move things round a bit.

1 files changed, 127 insertions, 0 deletions

diff --git a/src/lib/ab_transcoder.cc b/src/lib/ab_transcoder.cc
new file mode 100644
index 000000000..aabaf2d03
--- /dev/null
+++ b/src/lib/ab_transcoder.cc
@@ -0,0 +1,127 @@
+/*
+    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 <iostream>
+#include <boost/shared_ptr.hpp>
+#include <sigc++/bind.h>
+#include "ab_transcoder.h"
+#include "film.h"
+#include "decoder.h"
+#include "encoder.h"
+#include "job.h"
+#include "film_state.h"
+#include "options.h"
+#include "image.h"
+#include "decoder_factory.h"
+
+/** @file src/ab_transcoder.cc
+ *  @brief A transcoder which uses one FilmState for the left half of the screen, and a different one
+ *  for the right half (to facilitate A/B comparisons of settings)
+ */
+
+using namespace std;
+using namespace boost;
+
+/** @param a FilmState to use for the left half of the screen.
+ *  @param b FilmState to use for the right half of the screen.
+ *  @param o Options.
+ *  @param j Job that we are associated with.
+ *  @param l Log.
+ *  @param e Encoder to use.
+ */
+
+ABTranscoder::ABTranscoder (
+	shared_ptr<const FilmState> a, shared_ptr<const FilmState> b, shared_ptr<const Options> o, Job* j, Log* l, shared_ptr<Encoder> e)
+	: _fs_a (a)
+	, _fs_b (b)
+	, _opt (o)
+	, _job (j)
+	, _log (l)
+	, _encoder (e)
+	, _last_frame (0)
+{
+	_da = decoder_factory (_fs_a, o, j, _log);
+	_db = decoder_factory (_fs_b, o, j, _log);
+
+	_da->Video.connect (sigc::bind (sigc::mem_fun (*this, &ABTranscoder::process_video), 0));
+	_db->Video.connect (sigc::bind (sigc::mem_fun (*this, &ABTranscoder::process_video), 1));
+	_da->Audio.connect (sigc::mem_fun (*e, &Encoder::process_audio));
+}
+
+ABTranscoder::~ABTranscoder ()
+{
+
+}
+
+void
+ABTranscoder::process_video (shared_ptr<Image> yuv, int frame, int index)
+{
+	if (index == 0) {
+		/* Keep this image around until we get the other half */
+		_image = yuv;
+	} else {
+		/* Copy the right half of yuv into _image */
+		for (int i = 0; i < yuv->components(); ++i) {
+			int const line_size = yuv->line_size()[i];
+			int const half_line_size = line_size / 2;
+
+			uint8_t* p = _image->data()[i];
+			uint8_t* q = yuv->data()[i];
+			
+			for (int j = 0; j < yuv->lines (i); ++j) {
+				memcpy (p + half_line_size, q + half_line_size, half_line_size);
+				p += line_size;
+				q += line_size;
+			}
+		}
+			
+		/* And pass it to the encoder */
+		_encoder->process_video (_image, frame);
+		_image.reset ();
+	}
+	
+	_last_frame = frame;
+}
+
+
+void
+ABTranscoder::go ()
+{
+	_encoder->process_begin ();
+	_da->process_begin ();
+	_db->process_begin ();
+	
+	while (1) {
+		bool const a = _da->pass ();
+		bool const b = _db->pass ();
+
+		if (_job) {
+			_job->set_progress (float (_last_frame) / _da->decoding_frames ());
+		}
+		
+		if (a && b) {
+			break;
+		}
+	}
+
+	_encoder->process_end ();
+	_da->process_end ();
+	_db->process_end ();
+}
+