X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcontent.cc;h=f0d35186abde70627236c808658a4126f70aa1b0;hb=7ff262bc7a3e5ac16feab2fe7a0afbbe14c33896;hp=1ec607d394896b8ec0dbdc7ad1dbeacb7cfb7393;hpb=df085fc0ea4f1a3f009de5a7a5bf9f241173bcba;p=dcpomatic.git

diff --git a/src/lib/content.cc b/src/lib/content.cc
index 1ec607d39..f0d35186a 100644
--- a/src/lib/content.cc
+++ b/src/lib/content.cc
@@ -1,5 +1,5 @@
 /*
-    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
@@ -17,27 +17,31 @@
 
 */
 
-#include <boost/thread/mutex.hpp>
-#include <libxml++/libxml++.h>
-#include <libcxml/cxml.h>
-#include <libdcp/raw_convert.h>
+/** @file  src/lib/content.cc
+ *  @brief Content class.
+ */
+
 #include "content.h"
 #include "util.h"
 #include "content_factory.h"
-#include "ui_signaller.h"
 #include "exceptions.h"
 #include "film.h"
+#include "safe_stringstream.h"
+#include "job.h"
+#include "raw_convert.h"
+#include <libcxml/cxml.h>
+#include <libxml++/libxml++.h>
+#include <boost/thread/mutex.hpp>
 
 #include "i18n.h"
 
 using std::string;
-using std::stringstream;
-using std::set;
 using std::list;
 using std::cout;
 using std::vector;
+using std::max;
+using std::pair;
 using boost::shared_ptr;
-using libdcp::raw_convert;
 
 int const ContentProperty::PATH = 400;
 int const ContentProperty::POSITION = 401;
@@ -45,8 +49,8 @@ int const ContentProperty::LENGTH = 402;
 int const ContentProperty::TRIM_START = 403;
 int const ContentProperty::TRIM_END = 404;
 
-Content::Content (shared_ptr<const Film> f)
-	: _film (f)
+Content::Content (shared_ptr<const Film> film)
+	: _film (film)
 	, _position (0)
 	, _trim_start (0)
 	, _trim_end (0)
@@ -55,8 +59,8 @@ Content::Content (shared_ptr<const Film> f)
 
 }
 
-Content::Content (shared_ptr<const Film> f, Time p)
-	: _film (f)
+Content::Content (shared_ptr<const Film> film, DCPTime p)
+	: _film (film)
 	, _position (p)
 	, _trim_start (0)
 	, _trim_end (0)
@@ -65,8 +69,8 @@ Content::Content (shared_ptr<const Film> f, Time p)
 
 }
 
-Content::Content (shared_ptr<const Film> f, boost::filesystem::path p)
-	: _film (f)
+Content::Content (shared_ptr<const Film> film, boost::filesystem::path p)
+	: _film (film)
 	, _position (0)
 	, _trim_start (0)
 	, _trim_end (0)
@@ -75,33 +79,33 @@ Content::Content (shared_ptr<const Film> f, boost::filesystem::path p)
 	_paths.push_back (p);
 }
 
-Content::Content (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
-	: _film (f)
+Content::Content (shared_ptr<const Film> film, cxml::ConstNodePtr node)
+	: _film (film)
 	, _change_signals_frequent (false)
 {
 	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->string_child ("Digest");
-	_position = node->number_child<Time> ("Position");
-	_trim_start = node->number_child<Time> ("TrimStart");
-	_trim_end = node->number_child<Time> ("TrimEnd");
+	_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 (shared_ptr<const Film> f, vector<shared_ptr<Content> > c)
-	: _film (f)
+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 ()) {
+		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 ()) {
+		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."));
 		}
 
@@ -120,19 +124,27 @@ Content::as_xml (xmlpp::Node* node) const
 		node->add_child("Path")->add_child_text (i->string ());
 	}
 	node->add_child("Digest")->add_child_text (_digest);
-	node->add_child("Position")->add_child_text (raw_convert<string> (_position));
-	node->add_child("TrimStart")->add_child_text (raw_convert<string> (_trim_start));
-	node->add_child("TrimEnd")->add_child_text (raw_convert<string> (_trim_end));
+	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> job)
 {
+	if (job) {
+		job->sub (_("Computing digest"));
+	}
+
 	boost::mutex::scoped_lock lm (_mutex);
 	vector<boost::filesystem::path> p = _paths;
 	lm.unlock ();
-	
-	string const d = md5_digest (p, job);
+
+	/* 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;
@@ -141,20 +153,18 @@ Content::examine (shared_ptr<Job> job)
 void
 Content::signal_changed (int p)
 {
-	if (ui_signaller) {
-		ui_signaller->emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent));
-	}
+	emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent));
 }
 
 void
-Content::set_position (Time p)
+Content::set_position (DCPTime p)
 {
 	{
 		boost::mutex::scoped_lock lm (_mutex);
 		if (p == _position) {
 			return;
 		}
-		
+
 		_position = p;
 	}
 
@@ -162,7 +172,7 @@ Content::set_position (Time p)
 }
 
 void
-Content::set_trim_start (Time t)
+Content::set_trim_start (ContentTime t)
 {
 	{
 		boost::mutex::scoped_lock lm (_mutex);
@@ -173,7 +183,7 @@ Content::set_trim_start (Time t)
 }
 
 void
-Content::set_trim_end (Time t)
+Content::set_trim_end (ContentTime t)
 {
 	{
 		boost::mutex::scoped_lock lm (_mutex);
@@ -191,7 +201,7 @@ Content::clone () const
 	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");
@@ -205,22 +215,15 @@ Content::clone () const
 string
 Content::technical_summary () const
 {
-	return String::compose ("%1 %2 %3", path_summary(), digest(), position());
+	return String::compose ("%1 %2 %3", path_summary(), digest(), position().seconds());
 }
 
-Time
+DCPTime
 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 ()));
+	shared_ptr<const Film> film = _film.lock ();
+	DCPOMATIC_ASSERT (film);
+	return max (DCPTime (), full_length() - DCPTime (trim_start() + trim_end(), film->active_frame_rate_change (position ())));
 }
 
 /** @return string which includes everything about how this content affects
@@ -229,12 +232,12 @@ Content::trimmed (Time t) const
 string
 Content::identifier () const
 {
-	stringstream s;
-	
+	SafeStringStream s;
+
 	s << Content::digest()
-	  << "_" << position()
-	  << "_" << trim_start()
-	  << "_" << trim_end();
+	  << "_" << position().get()
+	  << "_" << trim_start().get()
+	  << "_" << trim_end().get();
 
 	return s.str ();
 }
@@ -264,7 +267,7 @@ Content::path_summary () const
 {
 	/* XXX: should handle multiple paths more gracefully */
 
-	assert (number_of_paths ());
+	DCPOMATIC_ASSERT (number_of_paths ());
 
 	string s = path(0).filename().string ();
 	if (number_of_paths() > 1) {
@@ -273,3 +276,14 @@ Content::path_summary () const
 
 	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;
+}