2 Copyright (C) 2013-2014 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 <libdcp/colour_matrix.h>
23 #include <libdcp/raw_convert.h>
24 #include "video_content.h"
25 #include "video_examiner.h"
26 #include "compose.hpp"
29 #include "colour_conversion.h"
32 #include "exceptions.h"
33 #include "frame_rate_change.h"
34 #include "safe_stringstream.h"
38 int const VideoContentProperty::VIDEO_SIZE = 0;
39 int const VideoContentProperty::VIDEO_FRAME_RATE = 1;
40 int const VideoContentProperty::VIDEO_FRAME_TYPE = 2;
41 int const VideoContentProperty::VIDEO_CROP = 3;
42 int const VideoContentProperty::VIDEO_SCALE = 4;
43 int const VideoContentProperty::COLOUR_CONVERSION = 5;
46 using std::setprecision;
51 using boost::shared_ptr;
52 using boost::optional;
53 using boost::dynamic_pointer_cast;
54 using libdcp::raw_convert;
56 VideoContent::VideoContent (shared_ptr<const Film> f)
59 , _original_video_frame_rate (0)
60 , _video_frame_rate (0)
61 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
62 , _scale (Config::instance()->default_scale ())
64 set_default_colour_conversion ();
67 VideoContent::VideoContent (shared_ptr<const Film> f, Time s, VideoContent::Frame len)
70 , _original_video_frame_rate (0)
71 , _video_frame_rate (0)
72 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
73 , _scale (Config::instance()->default_scale ())
75 set_default_colour_conversion ();
78 VideoContent::VideoContent (shared_ptr<const Film> f, boost::filesystem::path p)
81 , _original_video_frame_rate (0)
82 , _video_frame_rate (0)
83 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
84 , _scale (Config::instance()->default_scale ())
86 set_default_colour_conversion ();
89 VideoContent::VideoContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node, int version)
92 _video_length = node->number_child<VideoContent::Frame> ("VideoLength");
93 _video_size.width = node->number_child<int> ("VideoWidth");
94 _video_size.height = node->number_child<int> ("VideoHeight");
95 _video_frame_rate = node->number_child<float> ("VideoFrameRate");
96 _original_video_frame_rate = node->optional_number_child<float> ("OriginalVideoFrameRate").get_value_or (_video_frame_rate);
97 _video_frame_type = static_cast<VideoFrameType> (node->number_child<int> ("VideoFrameType"));
98 _crop.left = node->number_child<int> ("LeftCrop");
99 _crop.right = node->number_child<int> ("RightCrop");
100 _crop.top = node->number_child<int> ("TopCrop");
101 _crop.bottom = node->number_child<int> ("BottomCrop");
104 optional<string> r = node->optional_string_child ("Ratio");
106 _scale = VideoContentScale (Ratio::from_id (r.get ()));
109 _scale = VideoContentScale (node->node_child ("Scale"));
112 if (node->optional_node_child ("ColourConversion")) {
113 _colour_conversion = ColourConversion (node->node_child ("ColourConversion"));
117 VideoContent::VideoContent (shared_ptr<const Film> f, vector<shared_ptr<Content> > c)
121 shared_ptr<VideoContent> ref = dynamic_pointer_cast<VideoContent> (c[0]);
124 for (size_t i = 0; i < c.size(); ++i) {
125 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (c[i]);
127 if (vc->video_size() != ref->video_size()) {
128 throw JoinError (_("Content to be joined must have the same picture size."));
131 if (vc->video_frame_rate() != ref->video_frame_rate()) {
132 throw JoinError (_("Content to be joined must have the same video frame rate."));
135 if (vc->video_frame_type() != ref->video_frame_type()) {
136 throw JoinError (_("Content to be joined must have the same video frame type."));
139 if (vc->crop() != ref->crop()) {
140 throw JoinError (_("Content to be joined must have the same crop."));
143 if (vc->scale() != ref->scale()) {
144 throw JoinError (_("Content to be joined must have the same scale setting."));
147 if (vc->colour_conversion() != ref->colour_conversion()) {
148 throw JoinError (_("Content to be joined must have the same colour conversion."));
151 _video_length += vc->video_length ();
154 _video_size = ref->video_size ();
155 _original_video_frame_rate = ref->original_video_frame_rate ();
156 _video_frame_rate = ref->video_frame_rate ();
157 _video_frame_type = ref->video_frame_type ();
158 _crop = ref->crop ();
159 _scale = ref->scale ();
160 _colour_conversion = ref->colour_conversion ();
164 VideoContent::as_xml (xmlpp::Node* node) const
166 boost::mutex::scoped_lock lm (_mutex);
167 node->add_child("VideoLength")->add_child_text (raw_convert<string> (_video_length));
168 node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_video_size.width));
169 node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_video_size.height));
170 node->add_child("VideoFrameRate")->add_child_text (raw_convert<string> (_video_frame_rate));
171 node->add_child("OriginalVideoFrameRate")->add_child_text (raw_convert<string> (_original_video_frame_rate));
172 node->add_child("VideoFrameType")->add_child_text (raw_convert<string> (static_cast<int> (_video_frame_type)));
174 _scale.as_xml (node->add_child("Scale"));
175 if (_colour_conversion) {
176 _colour_conversion.get().as_xml (node->add_child("ColourConversion"));
181 VideoContent::set_default_colour_conversion ()
183 set_colour_conversion (PresetColourConversion (_("sRGB"), 2.4, true, libdcp::colour_matrix::srgb_to_xyz, 2.6).conversion);
187 VideoContent::take_from_video_examiner (shared_ptr<VideoExaminer> d)
189 /* These examiner calls could call other content methods which take a lock on the mutex */
190 libdcp::Size const vs = d->video_size ();
191 float const vfr = d->video_frame_rate ();
194 boost::mutex::scoped_lock lm (_mutex);
196 _video_frame_rate = vfr;
197 _original_video_frame_rate = vfr;
200 signal_changed (VideoContentProperty::VIDEO_SIZE);
201 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
206 VideoContent::information () const
208 if (video_size().width == 0 || video_size().height == 0) {
214 s << String::compose (
215 _("%1x%2 pixels (%3:1)"),
218 setprecision (3), video_size().ratio ()
225 VideoContent::set_left_crop (int c)
228 boost::mutex::scoped_lock lm (_mutex);
230 if (_crop.left == c) {
237 signal_changed (VideoContentProperty::VIDEO_CROP);
241 VideoContent::set_right_crop (int c)
244 boost::mutex::scoped_lock lm (_mutex);
245 if (_crop.right == c) {
252 signal_changed (VideoContentProperty::VIDEO_CROP);
256 VideoContent::set_top_crop (int c)
259 boost::mutex::scoped_lock lm (_mutex);
260 if (_crop.top == c) {
267 signal_changed (VideoContentProperty::VIDEO_CROP);
271 VideoContent::set_bottom_crop (int c)
274 boost::mutex::scoped_lock lm (_mutex);
275 if (_crop.bottom == c) {
282 signal_changed (VideoContentProperty::VIDEO_CROP);
286 VideoContent::set_scale (VideoContentScale s)
289 boost::mutex::scoped_lock lm (_mutex);
297 signal_changed (VideoContentProperty::VIDEO_SCALE);
300 /** @return string which includes everything about how this content looks */
302 VideoContent::identifier () const
305 s << Content::identifier()
306 << "_" << crop().left
307 << "_" << crop().right
309 << "_" << crop().bottom
310 << "_" << scale().id();
312 if (colour_conversion()) {
313 s << "_" << colour_conversion().get().identifier ();
320 VideoContent::set_video_frame_type (VideoFrameType t)
323 boost::mutex::scoped_lock lm (_mutex);
324 _video_frame_type = t;
327 signal_changed (VideoContentProperty::VIDEO_FRAME_TYPE);
331 VideoContent::technical_summary () const
333 return String::compose (
334 "video: length %1, size %2x%3, rate %4",
335 video_length_after_3d_combine(), video_size().width, video_size().height, video_frame_rate()
340 VideoContent::video_size_after_3d_split () const
342 libdcp::Size const s = video_size ();
343 switch (video_frame_type ()) {
344 case VIDEO_FRAME_TYPE_2D:
345 case VIDEO_FRAME_TYPE_3D_ALTERNATE:
346 case VIDEO_FRAME_TYPE_3D_LEFT:
347 case VIDEO_FRAME_TYPE_3D_RIGHT:
349 case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
350 return libdcp::Size (s.width / 2, s.height);
351 case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
352 return libdcp::Size (s.width, s.height / 2);
359 VideoContent::unset_colour_conversion ()
362 boost::mutex::scoped_lock lm (_mutex);
363 _colour_conversion = boost::optional<ColourConversion> ();
366 signal_changed (VideoContentProperty::COLOUR_CONVERSION);
370 VideoContent::set_colour_conversion (ColourConversion c)
373 boost::mutex::scoped_lock lm (_mutex);
374 _colour_conversion = c;
377 signal_changed (VideoContentProperty::COLOUR_CONVERSION);
380 /** @return Video size after 3D split and crop */
382 VideoContent::video_size_after_crop () const
384 return crop().apply (video_size_after_3d_split ());
387 /** @param t A time offset from the start of this piece of content.
388 * @return Corresponding frame index.
391 VideoContent::time_to_content_video_frames (Time t) const
393 shared_ptr<const Film> film = _film.lock ();
396 FrameRateChange frc (video_frame_rate(), film->video_frame_rate());
398 /* Here we are converting from time (in the DCP) to a frame number in the content.
399 Hence we need to use the DCP's frame rate and the double/skip correction, not
402 return t * film->video_frame_rate() / (frc.factor() * TIME_HZ);
406 VideoContent::scale_and_crop_to_fit_width ()
408 shared_ptr<const Film> film = _film.lock ();
411 set_scale (VideoContentScale (film->container ()));
413 int const crop = max (0, int (video_size().height - double (film->frame_size().height) * video_size().width / film->frame_size().width));
414 set_top_crop (crop / 2);
415 set_bottom_crop (crop / 2);
419 VideoContent::scale_and_crop_to_fit_height ()
421 shared_ptr<const Film> film = _film.lock ();
424 set_scale (VideoContentScale (film->container ()));
426 int const crop = max (0, int (video_size().width - double (film->frame_size().width) * video_size().height / film->frame_size().height));
427 set_left_crop (crop / 2);
428 set_right_crop (crop / 2);
432 VideoContent::set_video_frame_rate (float r)
435 boost::mutex::scoped_lock lm (_mutex);
436 if (_video_frame_rate == r) {
440 _video_frame_rate = r;
443 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);