1 files changed, 278 insertions, 0 deletions
diff --git a/src/lib/video_content.cc b/src/lib/video_content.cc
new file mode 100644
index 000000000..3f6e171a5
--- /dev/null
+++ b/src/lib/video_content.cc
@@ -0,0 +1,278 @@
+/*
+    Copyright (C) 2013 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 <iomanip>
+#include <libcxml/cxml.h>
+#include "video_content.h"
+#include "video_examiner.h"
+#include "ratio.h"
+#include "compose.hpp"
+#include "config.h"
+#include "colour_conversion.h"
+
+#include "i18n.h"
+
+int const VideoContentProperty::VIDEO_SIZE	  = 0;
+int const VideoContentProperty::VIDEO_FRAME_RATE  = 1;
+int const VideoContentProperty::VIDEO_FRAME_TYPE  = 2;
+int const VideoContentProperty::VIDEO_CROP	  = 3;
+int const VideoContentProperty::VIDEO_RATIO	  = 4;
+int const VideoContentProperty::COLOUR_CONVERSION = 5;
+
+using std::string;
+using std::stringstream;
+using std::setprecision;
+using std::cout;
+using boost::shared_ptr;
+using boost::lexical_cast;
+using boost::optional;
+
+VideoContent::VideoContent (shared_ptr<const Film> f, Time s, VideoContent::Frame len)
+	: Content (f, s)
+	, _video_length (len)
+	, _video_frame_rate (0)
+	, _video_frame_type (VIDEO_FRAME_TYPE_2D)
+	, _ratio (Ratio::from_id ("185"))
+	, _colour_conversion (Config::instance()->colour_conversions().front().conversion)
+{
+
+}
+
+VideoContent::VideoContent (shared_ptr<const Film> f, boost::filesystem::path p)
+	: Content (f, p)
+	, _video_length (0)
+	, _video_frame_rate (0)
+	, _video_frame_type (VIDEO_FRAME_TYPE_2D)
+	, _ratio (Ratio::from_id ("185"))
+	, _colour_conversion (Config::instance()->colour_conversions().front().conversion)
+{
+
+}
+
+VideoContent::VideoContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
+	: Content (f, node)
+{
+	_video_length = node->number_child<VideoContent::Frame> ("VideoLength");
+	_video_size.width = node->number_child<int> ("VideoWidth");
+	_video_size.height = node->number_child<int> ("VideoHeight");
+	_video_frame_rate = node->number_child<float> ("VideoFrameRate");
+	_video_frame_type = static_cast<VideoFrameType> (node->number_child<int> ("VideoFrameType"));
+	_crop.left = node->number_child<int> ("LeftCrop");
+	_crop.right = node->number_child<int> ("RightCrop");
+	_crop.top = node->number_child<int> ("TopCrop");
+	_crop.bottom = node->number_child<int> ("BottomCrop");
+	optional<string> r = node->optional_string_child ("Ratio");
+	if (r) {
+		_ratio = Ratio::from_id (r.get ());
+	}
+	_colour_conversion = ColourConversion (node->node_child ("ColourConversion"));
+}
+
+void
+VideoContent::as_xml (xmlpp::Node* node) const
+{
+	boost::mutex::scoped_lock lm (_mutex);
+	node->add_child("VideoLength")->add_child_text (lexical_cast<string> (_video_length));
+	node->add_child("VideoWidth")->add_child_text (lexical_cast<string> (_video_size.width));
+	node->add_child("VideoHeight")->add_child_text (lexical_cast<string> (_video_size.height));
+	node->add_child("VideoFrameRate")->add_child_text (lexical_cast<string> (_video_frame_rate));
+	node->add_child("VideoFrameType")->add_child_text (lexical_cast<string> (static_cast<int> (_video_frame_type)));
+	node->add_child("LeftCrop")->add_child_text (boost::lexical_cast<string> (_crop.left));
+	node->add_child("RightCrop")->add_child_text (boost::lexical_cast<string> (_crop.right));
+	node->add_child("TopCrop")->add_child_text (boost::lexical_cast<string> (_crop.top));
+	node->add_child("BottomCrop")->add_child_text (boost::lexical_cast<string> (_crop.bottom));
+	if (_ratio) {
+		node->add_child("Ratio")->add_child_text (_ratio->id ());
+	}
+	_colour_conversion.as_xml (node->add_child("ColourConversion"));
+}
+
+void
+VideoContent::take_from_video_examiner (shared_ptr<VideoExaminer> d)
+{
+	/* These examiner calls could call other content methods which take a lock on the mutex */
+	libdcp::Size const vs = d->video_size ();
+	float const vfr = d->video_frame_rate ();
+	
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		_video_size = vs;
+		_video_frame_rate = vfr;
+	}
+	
+	signal_changed (VideoContentProperty::VIDEO_SIZE);
+	signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
+}
+
+
+string
+VideoContent::information () const
+{
+	if (video_size().width == 0 || video_size().height == 0) {
+		return "";
+	}
+	
+	stringstream s;
+
+	s << String::compose (
+		_("%1x%2 pixels (%3:1)"),
+		video_size().width,
+		video_size().height,
+		setprecision (3), float (video_size().width) / video_size().height
+		);
+	
+	return s.str ();
+}
+
+void
+VideoContent::set_left_crop (int c)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		
+		if (_crop.left == c) {
+			return;
+		}
+		
+		_crop.left = c;
+	}
+	
+	signal_changed (VideoContentProperty::VIDEO_CROP);
+}
+
+void
+VideoContent::set_right_crop (int c)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		if (_crop.right == c) {
+			return;
+		}
+		
+		_crop.right = c;
+	}
+	
+	signal_changed (VideoContentProperty::VIDEO_CROP);
+}
+
+void
+VideoContent::set_top_crop (int c)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		if (_crop.top == c) {
+			return;
+		}
+		
+		_crop.top = c;
+	}
+	
+	signal_changed (VideoContentProperty::VIDEO_CROP);
+}
+
+void
+VideoContent::set_bottom_crop (int c)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		if (_crop.bottom == c) {
+			return;
+		}
+		
+		_crop.bottom = c;
+	}
+
+	signal_changed (VideoContentProperty::VIDEO_CROP);
+}
+
+void
+VideoContent::set_ratio (Ratio const * r)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		if (_ratio == r) {
+			return;
+		}
+
+		_ratio = r;
+	}
+
+	signal_changed (VideoContentProperty::VIDEO_RATIO);
+}
+
+/** @return string which includes everything about how this content looks */
+string
+VideoContent::identifier () const
+{
+	stringstream s;
+	s << Content::digest()
+	  << "_" << crop().left
+	  << "_" << crop().right
+	  << "_" << crop().top
+	  << "_" << crop().bottom
+	  << "_" << colour_conversion().identifier ();
+
+	if (ratio()) {
+		s << "_" << ratio()->id ();
+	}
+
+	return s.str ();
+}
+
+void
+VideoContent::set_video_frame_type (VideoFrameType t)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		_video_frame_type = t;
+	}
+
+	signal_changed (VideoContentProperty::VIDEO_FRAME_TYPE);
+}
+
+string
+VideoContent::technical_summary () const
+{
+	return String::compose ("video: length %1, size %2x%3, rate %4", video_length(), video_size().width, video_size().height, video_frame_rate());
+}
+
+libdcp::Size
+VideoContent::video_size_after_3d_split () const
+{
+	libdcp::Size const s = video_size ();
+	switch (video_frame_type ()) {
+	case VIDEO_FRAME_TYPE_2D:
+		return s;
+	case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
+		return libdcp::Size (s.width / 2, s.height);
+	}
+
+	assert (false);
+}
+
+void
+VideoContent::set_colour_conversion (ColourConversion c)
+{
+	{
+		boost::mutex::scoped_lock lm (_mutex);
+		_colour_conversion = c;
+	}
+
+	signal_changed (VideoContentProperty::COLOUR_CONVERSION);
+}