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.
20 #include <libcxml/cxml.h>
21 #include "video_content.h"
22 #include "video_decoder.h"
27 int const VideoContentProperty::VIDEO_SIZE = 0;
28 int const VideoContentProperty::VIDEO_FRAME_RATE = 1;
29 int const VideoContentProperty::VIDEO_CROP = 2;
30 int const VideoContentProperty::VIDEO_RATIO = 3;
33 using std::stringstream;
34 using std::setprecision;
35 using boost::shared_ptr;
36 using boost::lexical_cast;
37 using boost::optional;
39 VideoContent::VideoContent (shared_ptr<const Film> f, Time s, ContentVideoFrame len)
47 VideoContent::VideoContent (shared_ptr<const Film> f, boost::filesystem::path p)
55 VideoContent::VideoContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
58 _video_length = node->number_child<ContentVideoFrame> ("VideoLength");
59 _video_size.width = node->number_child<int> ("VideoWidth");
60 _video_size.height = node->number_child<int> ("VideoHeight");
61 _video_frame_rate = node->number_child<float> ("VideoFrameRate");
62 _crop.left = node->number_child<int> ("LeftCrop");
63 _crop.right = node->number_child<int> ("RightCrop");
64 _crop.top = node->number_child<int> ("TopCrop");
65 _crop.bottom = node->number_child<int> ("BottomCrop");
66 optional<string> r = node->optional_string_child ("Ratio");
68 _ratio = Ratio::from_id (r.get ());
72 VideoContent::VideoContent (VideoContent const & o)
74 , _video_length (o._video_length)
75 , _video_size (o._video_size)
76 , _video_frame_rate (o._video_frame_rate)
83 VideoContent::as_xml (xmlpp::Node* node) const
85 boost::mutex::scoped_lock lm (_mutex);
86 node->add_child("VideoLength")->add_child_text (lexical_cast<string> (_video_length));
87 node->add_child("VideoWidth")->add_child_text (lexical_cast<string> (_video_size.width));
88 node->add_child("VideoHeight")->add_child_text (lexical_cast<string> (_video_size.height));
89 node->add_child("VideoFrameRate")->add_child_text (lexical_cast<string> (_video_frame_rate));
90 node->add_child("LeftCrop")->add_child_text (boost::lexical_cast<string> (_crop.left));
91 node->add_child("RightCrop")->add_child_text (boost::lexical_cast<string> (_crop.right));
92 node->add_child("TopCrop")->add_child_text (boost::lexical_cast<string> (_crop.top));
93 node->add_child("BottomCrop")->add_child_text (boost::lexical_cast<string> (_crop.bottom));
95 node->add_child("Ratio")->add_child_text (_ratio->id ());
100 VideoContent::take_from_video_decoder (shared_ptr<VideoDecoder> d)
102 /* These decoder calls could call other content methods which take a lock on the mutex */
103 libdcp::Size const vs = d->video_size ();
104 float const vfr = d->video_frame_rate ();
107 boost::mutex::scoped_lock lm (_mutex);
109 _video_frame_rate = vfr;
112 signal_changed (VideoContentProperty::VIDEO_SIZE);
113 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
118 VideoContent::information () const
120 if (video_size().width == 0 || video_size().height == 0) {
126 s << String::compose (
127 _("%1x%2 pixels (%3:1)"),
130 setprecision (3), float (video_size().width) / video_size().height
137 VideoContent::set_crop (Crop c)
140 boost::mutex::scoped_lock lm (_mutex);
143 signal_changed (VideoContentProperty::VIDEO_CROP);
147 VideoContent::set_left_crop (int c)
150 boost::mutex::scoped_lock lm (_mutex);
152 if (_crop.left == c) {
159 signal_changed (VideoContentProperty::VIDEO_CROP);
163 VideoContent::set_right_crop (int c)
166 boost::mutex::scoped_lock lm (_mutex);
167 if (_crop.right == c) {
174 signal_changed (VideoContentProperty::VIDEO_CROP);
178 VideoContent::set_top_crop (int c)
181 boost::mutex::scoped_lock lm (_mutex);
182 if (_crop.top == c) {
189 signal_changed (VideoContentProperty::VIDEO_CROP);
193 VideoContent::set_bottom_crop (int c)
196 boost::mutex::scoped_lock lm (_mutex);
197 if (_crop.bottom == c) {
204 signal_changed (VideoContentProperty::VIDEO_CROP);
208 VideoContent::set_ratio (Ratio const * r)
211 boost::mutex::scoped_lock lm (_mutex);
219 signal_changed (VideoContentProperty::VIDEO_RATIO);