From bb767c7e338414beee132af3e96829c1448e214b Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sun, 15 Jul 2012 00:14:28 +0100
Subject: Move things round a bit.

---
 src/lib/transcoder.cc | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/lib/transcoder.cc

(limited to 'src/lib/transcoder.cc')

diff --git a/src/lib/transcoder.cc b/src/lib/transcoder.cc
new file mode 100644
index 000000000..3d71b68f5
--- /dev/null
+++ b/src/lib/transcoder.cc
@@ -0,0 +1,72 @@
+/*
+    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.
+
+*/
+
+/** @file  src/transcoder.cc
+ *  @brief A class which takes a FilmState and some Options, then uses those to transcode a Film.
+ *
+ *  A decoder is selected according to the content type, and the encoder can be specified
+ *  as a parameter to the constructor.
+ */
+
+#include <iostream>
+#include <sigc++/signal.h>
+#include "transcoder.h"
+#include "encoder.h"
+#include "decoder_factory.h"
+
+using namespace std;
+using namespace boost;
+
+/** Construct a transcoder using a Decoder that we create and a supplied Encoder.
+ *  @param s FilmState of Film that we are transcoding.
+ *  @param o Options.
+ *  @param j Job that we are running under, or 0.
+ *  @param l Log that we can write to.
+ *  @param e Encoder to use.
+ */
+Transcoder::Transcoder (shared_ptr<const FilmState> s, shared_ptr<const Options> o, Job* j, Log* l, shared_ptr<Encoder> e)
+	: _job (j)
+	, _encoder (e)
+	, _decoder (decoder_factory (s, o, j, l))
+{
+	assert (_encoder);
+	
+	_decoder->Video.connect (sigc::mem_fun (*e, &Encoder::process_video));
+	_decoder->Audio.connect (sigc::mem_fun (*e, &Encoder::process_audio));
+}
+
+/** Run the decoder, passing its output to the encoder, until the decoder
+ *  has no more data to present.
+ */
+void
+Transcoder::go ()
+{
+	_encoder->process_begin ();
+	try {
+		_decoder->go ();
+	} catch (...) {
+		/* process_end() is important as the decoder may have worker
+		   threads that need to be cleaned up.
+		*/
+		_encoder->process_end ();
+		throw;
+	}
+
+	_encoder->process_end ();
+}
-- 
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