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/*
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 <boost/thread/mutex.hpp>
#include <libxml++/libxml++.h>
#include <libcxml/cxml.h>
#include "content.h"
#include "util.h"
#include "content_factory.h"
#include "ui_signaller.h"
using std::string;
using std::set;
using boost::shared_ptr;
using boost::lexical_cast;
int const ContentProperty::POSITION = 400;
int const ContentProperty::LENGTH = 401;
int const ContentProperty::TRIM_START = 402;
int const ContentProperty::TRIM_END = 403;
Content::Content (shared_ptr<const Film> f, Time p)
: _film (f)
, _position (p)
, _trim_start (0)
, _trim_end (0)
, _change_signals_frequent (false)
{
}
Content::Content (shared_ptr<const Film> f, boost::filesystem::path p)
: _film (f)
, _path (p)
, _position (0)
, _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)
, _change_signals_frequent (false)
{
_path = node->string_child ("Path");
_digest = node->string_child ("Digest");
_position = node->number_child<Time> ("Position");
_trim_start = node->number_child<Time> ("TrimStart");
_trim_end = node->number_child<Time> ("TrimEnd");
}
void
Content::as_xml (xmlpp::Node* node) const
{
boost::mutex::scoped_lock lm (_mutex);
node->add_child("Path")->add_child_text (_path.string());
node->add_child("Digest")->add_child_text (_digest);
node->add_child("Position")->add_child_text (lexical_cast<string> (_position));
node->add_child("TrimStart")->add_child_text (lexical_cast<string> (_trim_start));
node->add_child("TrimEnd")->add_child_text (lexical_cast<string> (_trim_end));
}
void
Content::examine (shared_ptr<Job>)
{
string d;
if (boost::filesystem::is_regular_file (_path)) {
d = md5_digest (_path);
} else {
d = md5_digest_directory (_path);
}
boost::mutex::scoped_lock lm (_mutex);
_digest = d;
}
void
Content::signal_changed (int p)
{
if (ui_signaller) {
ui_signaller->emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent));
}
}
void
Content::set_position (Time p)
{
{
boost::mutex::scoped_lock lm (_mutex);
_position = p;
}
signal_changed (ContentProperty::POSITION);
}
void
Content::set_trim_start (Time t)
{
{
boost::mutex::scoped_lock lm (_mutex);
_trim_start = t;
}
signal_changed (ContentProperty::TRIM_START);
}
void
Content::set_trim_end (Time 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> ();
}
/* 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);
return content_factory (film, shared_ptr<cxml::Node> (new cxml::Node (node)));
}
string
Content::technical_summary () const
{
return String::compose ("%1 %2 %3", path(), digest(), position());
}
Time
Content::length_after_trim () const
{
return full_length () - _trim_start - _trim_end;
}
/** @param t A time relative to the start of this content (not the position).
* @return true if this time is trimmed by our trim settings.
*/
bool
Content::trimmed (Time t) const
{
return (t < trim_start() || t > (full_length() - trim_end ()));
}
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