2 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <libcxml/cxml.h>
22 #include "video_content.h"
23 #include "video_examiner.h"
25 #include "compose.hpp"
29 int const VideoContentProperty::VIDEO_SIZE = 0;
30 int const VideoContentProperty::VIDEO_FRAME_RATE = 1;
31 int const VideoContentProperty::VIDEO_CROP = 2;
32 int const VideoContentProperty::VIDEO_RATIO = 3;
35 using std::stringstream;
36 using std::setprecision;
37 using boost::shared_ptr;
38 using boost::lexical_cast;
39 using boost::optional;
41 VideoContent::VideoContent (shared_ptr<const Film> f, Time s, VideoContent::Frame len)
44 , _video_frame_rate (0)
45 , _ratio (Ratio::from_id ("185"))
50 VideoContent::VideoContent (shared_ptr<const Film> f, boost::filesystem::path p)
53 , _video_frame_rate (0)
54 , _ratio (Ratio::from_id ("185"))
59 VideoContent::VideoContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
62 _video_length = node->number_child<VideoContent::Frame> ("VideoLength");
63 _video_size.width = node->number_child<int> ("VideoWidth");
64 _video_size.height = node->number_child<int> ("VideoHeight");
65 _video_frame_rate = node->number_child<float> ("VideoFrameRate");
66 _crop.left = node->number_child<int> ("LeftCrop");
67 _crop.right = node->number_child<int> ("RightCrop");
68 _crop.top = node->number_child<int> ("TopCrop");
69 _crop.bottom = node->number_child<int> ("BottomCrop");
70 optional<string> r = node->optional_string_child ("Ratio");
72 _ratio = Ratio::from_id (r.get ());
76 VideoContent::VideoContent (VideoContent const & o)
78 , _video_length (o._video_length)
79 , _video_size (o._video_size)
80 , _video_frame_rate (o._video_frame_rate)
87 VideoContent::as_xml (xmlpp::Node* node) const
89 boost::mutex::scoped_lock lm (_mutex);
90 node->add_child("VideoLength")->add_child_text (lexical_cast<string> (_video_length));
91 node->add_child("VideoWidth")->add_child_text (lexical_cast<string> (_video_size.width));
92 node->add_child("VideoHeight")->add_child_text (lexical_cast<string> (_video_size.height));
93 node->add_child("VideoFrameRate")->add_child_text (lexical_cast<string> (_video_frame_rate));
94 node->add_child("LeftCrop")->add_child_text (boost::lexical_cast<string> (_crop.left));
95 node->add_child("RightCrop")->add_child_text (boost::lexical_cast<string> (_crop.right));
96 node->add_child("TopCrop")->add_child_text (boost::lexical_cast<string> (_crop.top));
97 node->add_child("BottomCrop")->add_child_text (boost::lexical_cast<string> (_crop.bottom));
99 node->add_child("Ratio")->add_child_text (_ratio->id ());
104 VideoContent::take_from_video_examiner (shared_ptr<VideoExaminer> d)
106 /* These examiner calls could call other content methods which take a lock on the mutex */
107 libdcp::Size const vs = d->video_size ();
108 float const vfr = d->video_frame_rate ();
111 boost::mutex::scoped_lock lm (_mutex);
113 _video_frame_rate = vfr;
116 signal_changed (VideoContentProperty::VIDEO_SIZE);
117 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
122 VideoContent::information () const
124 if (video_size().width == 0 || video_size().height == 0) {
130 s << String::compose (
131 _("%1x%2 pixels (%3:1)"),
134 setprecision (3), float (video_size().width) / video_size().height
141 VideoContent::set_crop (Crop c)
144 boost::mutex::scoped_lock lm (_mutex);
147 signal_changed (VideoContentProperty::VIDEO_CROP);
151 VideoContent::set_left_crop (int c)
154 boost::mutex::scoped_lock lm (_mutex);
156 if (_crop.left == c) {
163 signal_changed (VideoContentProperty::VIDEO_CROP);
167 VideoContent::set_right_crop (int c)
170 boost::mutex::scoped_lock lm (_mutex);
171 if (_crop.right == c) {
178 signal_changed (VideoContentProperty::VIDEO_CROP);
182 VideoContent::set_top_crop (int c)
185 boost::mutex::scoped_lock lm (_mutex);
186 if (_crop.top == c) {
193 signal_changed (VideoContentProperty::VIDEO_CROP);
197 VideoContent::set_bottom_crop (int c)
200 boost::mutex::scoped_lock lm (_mutex);
201 if (_crop.bottom == c) {
208 signal_changed (VideoContentProperty::VIDEO_CROP);
212 VideoContent::set_ratio (Ratio const * r)
215 boost::mutex::scoped_lock lm (_mutex);
223 signal_changed (VideoContentProperty::VIDEO_RATIO);
226 /** @return string which includes everything about how this content looks */
228 VideoContent::identifier () const
231 s << Content::digest()
232 << "_" << crop().left
233 << "_" << crop().right
235 << "_" << crop().bottom;
238 s << "_" << ratio()->id ();