-/* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
-
/*
- Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2015 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
*/
-#include <boost/thread/mutex.hpp>
-#include <libxml++/libxml++.h>
-#include <libcxml/cxml.h>
+/** @file src/lib/content.cc
+ * @brief Content class.
+ */
+
#include "content.h"
#include "util.h"
+#include "content_factory.h"
+#include "exceptions.h"
+#include "film.h"
+#include "safe_stringstream.h"
+#include "job.h"
+#include "compose.hpp"
+#include "raw_convert.h"
+#include <libcxml/cxml.h>
+#include <libxml++/libxml++.h>
+#include <boost/thread/mutex.hpp>
+#include <iostream>
+
+#include "i18n.h"
using std::string;
+using std::list;
+using std::cout;
+using std::vector;
+using std::max;
+using std::pair;
using boost::shared_ptr;
-using boost::lexical_cast;
-int const ContentProperty::START = 400;
+int const ContentProperty::PATH = 400;
+int const ContentProperty::POSITION = 401;
+int const ContentProperty::LENGTH = 402;
+int const ContentProperty::TRIM_START = 403;
+int const ContentProperty::TRIM_END = 404;
-Content::Content (shared_ptr<const Film> f, Time s)
- : _film (f)
- , _start (s)
+Content::Content (shared_ptr<const Film> film)
+ : _film (film)
+ , _position (0)
+ , _trim_start (0)
+ , _trim_end (0)
+ , _change_signals_frequent (false)
{
}
-Content::Content (shared_ptr<const Film> f, boost::filesystem::path p)
- : _film (f)
- , _file (p)
- , _start (0)
+Content::Content (shared_ptr<const Film> film, DCPTime p)
+ : _film (film)
+ , _position (p)
+ , _trim_start (0)
+ , _trim_end (0)
+ , _change_signals_frequent (false)
{
}
-Content::Content (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
- : _film (f)
+Content::Content (shared_ptr<const Film> film, boost::filesystem::path p)
+ : _film (film)
+ , _position (0)
+ , _trim_start (0)
+ , _trim_end (0)
+ , _change_signals_frequent (false)
+{
+ _paths.push_back (p);
+}
+
+Content::Content (shared_ptr<const Film> film, cxml::ConstNodePtr node)
+ : _film (film)
+ , _change_signals_frequent (false)
{
- _file = node->string_child ("File");
- _digest = node->string_child ("Digest");
- _start = node->number_child<Time> ("Start");
+ list<cxml::NodePtr> path_children = node->node_children ("Path");
+ for (list<cxml::NodePtr>::const_iterator i = path_children.begin(); i != path_children.end(); ++i) {
+ _paths.push_back ((*i)->content ());
+ }
+ _digest = node->optional_string_child ("Digest").get_value_or ("X");
+ _position = DCPTime (node->number_child<DCPTime::Type> ("Position"));
+ _trim_start = ContentTime (node->number_child<ContentTime::Type> ("TrimStart"));
+ _trim_end = ContentTime (node->number_child<ContentTime::Type> ("TrimEnd"));
}
-Content::Content (Content const & o)
- : boost::enable_shared_from_this<Content> (o)
- , _film (o._film)
- , _file (o._file)
- , _digest (o._digest)
- , _start (o._start)
+Content::Content (shared_ptr<const Film> film, vector<shared_ptr<Content> > c)
+ : _film (film)
+ , _position (c.front()->position ())
+ , _trim_start (c.front()->trim_start ())
+ , _trim_end (c.back()->trim_end ())
+ , _change_signals_frequent (false)
{
+ for (size_t i = 0; i < c.size(); ++i) {
+ if (i > 0 && c[i]->trim_start() > ContentTime ()) {
+ throw JoinError (_("Only the first piece of content to be joined can have a start trim."));
+ }
+ if (i < (c.size() - 1) && c[i]->trim_end () > ContentTime ()) {
+ throw JoinError (_("Only the last piece of content to be joined can have an end trim."));
+ }
+
+ for (size_t j = 0; j < c[i]->number_of_paths(); ++j) {
+ _paths.push_back (c[i]->path (j));
+ }
+ }
}
void
Content::as_xml (xmlpp::Node* node) const
{
boost::mutex::scoped_lock lm (_mutex);
- node->add_child("File")->add_child_text (_file.string());
+
+ for (vector<boost::filesystem::path>::const_iterator i = _paths.begin(); i != _paths.end(); ++i) {
+ node->add_child("Path")->add_child_text (i->string ());
+ }
node->add_child("Digest")->add_child_text (_digest);
- node->add_child("Start")->add_child_text (lexical_cast<string> (_start));
+ node->add_child("Position")->add_child_text (raw_convert<string> (_position.get ()));
+ node->add_child("TrimStart")->add_child_text (raw_convert<string> (_trim_start.get ()));
+ node->add_child("TrimEnd")->add_child_text (raw_convert<string> (_trim_end.get ()));
}
void
-Content::examine (shared_ptr<Job>)
+Content::examine (shared_ptr<Job> job)
{
- string const d = md5_digest (_file);
+ if (job) {
+ job->sub (_("Computing digest"));
+ }
+
boost::mutex::scoped_lock lm (_mutex);
+ vector<boost::filesystem::path> p = _paths;
+ lm.unlock ();
+
+ /* Some content files are very big, so we use a poor man's
+ digest here: a MD5 of the first and last 1e6 bytes with the
+ size of the first file tacked on the end as a string.
+ */
+ string const d = md5_digest_head_tail (p, 1000000) + raw_convert<string> (boost::filesystem::file_size (p.front ()));
+
+ lm.lock ();
_digest = d;
}
void
Content::signal_changed (int p)
{
- Changed (shared_from_this (), p);
+ emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent));
+}
+
+void
+Content::set_position (DCPTime p)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ if (p == _position) {
+ return;
+ }
+
+ _position = p;
+ }
+
+ signal_changed (ContentProperty::POSITION);
}
void
-Content::set_start (Time s)
+Content::set_trim_start (ContentTime t)
{
{
boost::mutex::scoped_lock lm (_mutex);
- _start = s;
+ _trim_start = t;
+ }
+
+ signal_changed (ContentProperty::TRIM_START);
+}
+
+void
+Content::set_trim_end (ContentTime t)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _trim_end = t;
+ }
+
+ signal_changed (ContentProperty::TRIM_END);
+}
+
+
+shared_ptr<Content>
+Content::clone () const
+{
+ shared_ptr<const Film> film = _film.lock ();
+ if (!film) {
+ return shared_ptr<Content> ();
}
- signal_changed (ContentProperty::START);
+ /* This is a bit naughty, but I can't think of a compelling reason not to do it ... */
+ xmlpp::Document doc;
+ xmlpp::Node* node = doc.create_root_node ("Content");
+ as_xml (node);
+
+ /* notes is unused here (we assume) */
+ list<string> notes;
+ return content_factory (film, cxml::NodePtr (new cxml::Node (node)), Film::current_state_version, notes);
+}
+
+string
+Content::technical_summary () const
+{
+ return String::compose ("%1 %2 %3", path_summary(), digest(), position().seconds());
+}
+
+DCPTime
+Content::length_after_trim () const
+{
+ return max (DCPTime (), full_length() - DCPTime (trim_start() + trim_end(), film()->active_frame_rate_change (position ())));
+}
+
+/** @return string which changes when something about this content changes which affects
+ * the appearance of its video.
+ */
+string
+Content::identifier () const
+{
+ SafeStringStream s;
+
+ s << Content::digest()
+ << "_" << position().get()
+ << "_" << trim_start().get()
+ << "_" << trim_end().get();
+
+ return s.str ();
+}
+
+bool
+Content::paths_valid () const
+{
+ for (vector<boost::filesystem::path>::const_iterator i = _paths.begin(); i != _paths.end(); ++i) {
+ if (!boost::filesystem::exists (*i)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+void
+Content::set_path (boost::filesystem::path path)
+{
+ _paths.clear ();
+ _paths.push_back (path);
+ signal_changed (ContentProperty::PATH);
+}
+
+string
+Content::path_summary () const
+{
+ /* XXX: should handle multiple paths more gracefully */
+
+ DCPOMATIC_ASSERT (number_of_paths ());
+
+ string s = path(0).filename().string ();
+ if (number_of_paths() > 1) {
+ s += " ...";
+ }
+
+ return s;
+}
+
+/** @return a list of properties that might be interesting to the user; first string is the property name,
+ * second is the value.
+ */
+list<pair<string, string> >
+Content::properties () const
+{
+ list<pair<string, string> > p;
+ add_properties (p);
+ return p;
+}
+
+shared_ptr<const Film>
+Content::film () const
+{
+ shared_ptr<const Film> film = _film.lock ();
+ DCPOMATIC_ASSERT (film);
+ return film;
}
projects / dcpomatic.git / blobdiff