From 2cf3da72a017eebf741dfb9a5ec158df94a4e7b7 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 9 Jul 2014 09:36:58 +0100
Subject: Basics of DCP import.

---
 src/lib/dcp_decoder.cc | 119 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 src/lib/dcp_decoder.cc

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

diff --git a/src/lib/dcp_decoder.cc b/src/lib/dcp_decoder.cc
new file mode 100644
index 000000000..14672a23b
--- /dev/null
+++ b/src/lib/dcp_decoder.cc
@@ -0,0 +1,119 @@
+/*
+    Copyright (C) 2014 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 <dcp/dcp.h>
+#include <dcp/cpl.h>
+#include <dcp/reel.h>
+#include <dcp/mono_picture_mxf.h>
+#include <dcp/stereo_picture_mxf.h>
+#include <dcp/reel_picture_asset.h>
+#include <dcp/mono_picture_frame.h>
+#include <dcp/stereo_picture_frame.h>
+#include "dcp_decoder.h"
+#include "dcp_content.h"
+#include "image_proxy.h"
+#include "image.h"
+
+using std::list;
+using std::cout;
+using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
+
+DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
+	: VideoDecoder (c)
+	, AudioDecoder (c)
+	, SubtitleDecoder (c)
+	, _log (log)
+	, _dcp_content (c)
+{
+	dcp::DCP dcp (c->directory ());
+	dcp.read ();
+	assert (dcp.cpls().size() == 1);
+	_reels = dcp.cpls().front()->reels ();
+	_reel = _reels.begin ();
+}
+
+bool
+DCPDecoder::pass ()
+{
+	if (_reel == _reels.end ()) {
+		return true;
+	}
+
+	float const vfr = _dcp_content->video_frame_rate ();
+	
+	if ((*_reel)->main_picture ()) {
+		shared_ptr<dcp::PictureMXF> mxf = (*_reel)->main_picture()->mxf ();
+		shared_ptr<dcp::MonoPictureMXF> mono = dynamic_pointer_cast<dcp::MonoPictureMXF> (mxf);
+		shared_ptr<dcp::StereoPictureMXF> stereo = dynamic_pointer_cast<dcp::StereoPictureMXF> (mxf);
+		if (mono) {
+			shared_ptr<Image> image (new Image (PIX_FMT_RGB24, mxf->size(), false));
+			mono->get_frame (_next.frames (vfr))->rgb_frame (image->data()[0]);
+			shared_ptr<Image> aligned (new Image (image, true));
+			video (shared_ptr<ImageProxy> (new RawImageProxy (aligned, _log)), _next.frames (vfr));
+		} else {
+
+			shared_ptr<Image> left (new Image (PIX_FMT_RGB24, mxf->size(), false));
+			stereo->get_frame (_next.frames (vfr))->rgb_frame (dcp::EYE_LEFT, left->data()[0]);
+			shared_ptr<Image> aligned_left (new Image (left, true));
+			video (shared_ptr<ImageProxy> (new RawImageProxy (aligned_left, _log)), _next.frames (vfr));
+
+			shared_ptr<Image> right (new Image (PIX_FMT_RGB24, mxf->size(), false));
+			stereo->get_frame (_next.frames (vfr))->rgb_frame (dcp::EYE_RIGHT, right->data()[0]);
+			shared_ptr<Image> aligned_right (new Image (right, true));
+			video (shared_ptr<ImageProxy> (new RawImageProxy (aligned_right, _log)), _next.frames (vfr));
+		}
+	}
+
+	/* XXX: sound */
+	/* XXX: subtitle */
+
+	_next += ContentTime::from_frames (1, vfr);
+
+	if ((*_reel)->main_picture ()) {
+		if ((*_reel)->main_picture()->duration() >= _next.frames (vfr)) {
+			++_reel;
+		}
+	}
+	
+	return false;
+}
+
+void
+DCPDecoder::seek (ContentTime t, bool accurate)
+{
+	VideoDecoder::seek (t, accurate);
+	AudioDecoder::seek (t, accurate);
+	SubtitleDecoder::seek (t, accurate);
+
+	_reel = _reels.begin ();
+	while (_reel != _reels.end() && t >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ())) {
+		t -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ());
+		++_reel;
+	}
+
+	_next = t;
+}
+
+
+list<ContentTimePeriod>
+DCPDecoder::subtitles_during (ContentTimePeriod, bool starting) const
+{
+	return list<ContentTimePeriod> ();
+}
-- 
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