X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcontent.cc;h=107a9564426e46e83b3f440a36a2a3016862e1b4;hb=3828baf56467224f5d44049bf1e7a7ed11f43a05;hp=1fb4681a251b2810c662426912114f6a2af181e7;hpb=e6f28e7cda23c1ba3c49cc1bf2dc1491c2f87160;p=dcpomatic.git diff --git a/src/lib/content.cc b/src/lib/content.cc index 1fb4681a2..107a95644 100644 --- a/src/lib/content.cc +++ b/src/lib/content.cc @@ -1,51 +1,60 @@ /* - Copyright (C) 2013 Carl Hetherington + Copyright (C) 2013-2015 Carl Hetherington - This program is free software; you can redistribute it and/or modify + This file is part of DCP-o-matic. + + DCP-o-matic 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, + DCP-o-matic 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. + along with DCP-o-matic. If not, see . */ -#include -#include -#include +/** @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 "compose.hpp" +#include "raw_convert.h" +#include +#include +#include +#include #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 boost::lexical_cast; 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; +int const ContentProperty::VIDEO_FRAME_RATE = 405; -Content::Content (shared_ptr f) - : _film (f) +Content::Content (shared_ptr film) + : _film (film) , _position (0) , _trim_start (0) , _trim_end (0) @@ -54,8 +63,8 @@ Content::Content (shared_ptr f) } -Content::Content (shared_ptr f, DCPTime p) - : _film (f) +Content::Content (shared_ptr film, DCPTime p) + : _film (film) , _position (p) , _trim_start (0) , _trim_end (0) @@ -64,8 +73,8 @@ Content::Content (shared_ptr f, DCPTime p) } -Content::Content (shared_ptr f, boost::filesystem::path p) - : _film (f) +Content::Content (shared_ptr film, boost::filesystem::path p) + : _film (film) , _position (0) , _trim_start (0) , _trim_end (0) @@ -74,33 +83,33 @@ Content::Content (shared_ptr f, boost::filesystem::path p) _paths.push_back (p); } -Content::Content (shared_ptr f, shared_ptr node) - : _film (f) +Content::Content (shared_ptr film, cxml::ConstNodePtr node) + : _film (film) , _change_signals_frequent (false) { list path_children = node->node_children ("Path"); for (list::const_iterator i = path_children.begin(); i != path_children.end(); ++i) { _paths.push_back ((*i)->content ()); } - _digest = node->string_child ("Digest"); - _position = DCPTime (node->number_child ("Position")); - _trim_start = DCPTime (node->number_child ("TrimStart")); - _trim_end = DCPTime (node->number_child ("TrimEnd")); + _digest = node->optional_string_child ("Digest").get_value_or ("X"); + _position = DCPTime (node->number_child ("Position")); + _trim_start = ContentTime (node->number_child ("TrimStart")); + _trim_end = ContentTime (node->number_child ("TrimEnd")); } -Content::Content (shared_ptr f, vector > c) - : _film (f) +Content::Content (shared_ptr film, vector > 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() > DCPTime()) { + 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 () > DCPTime()) { + 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.")); } @@ -119,19 +128,27 @@ 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 (lexical_cast (_position.get ())); - node->add_child("TrimStart")->add_child_text (lexical_cast (_trim_start.get ())); - node->add_child("TrimEnd")->add_child_text (lexical_cast (_trim_end.get ())); + node->add_child("Position")->add_child_text (raw_convert (_position.get ())); + node->add_child("TrimStart")->add_child_text (raw_convert (_trim_start.get ())); + node->add_child("TrimEnd")->add_child_text (raw_convert (_trim_end.get ())); } void Content::examine (shared_ptr job) { + if (job) { + job->sub (_("Computing digest")); + } + boost::mutex::scoped_lock lm (_mutex); vector 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 (boost::filesystem::file_size (p.front ())); lm.lock (); _digest = d; @@ -140,8 +157,10 @@ Content::examine (shared_ptr 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)); + try { + emit (boost::bind (boost::ref (Changed), shared_from_this (), p, _change_signals_frequent)); + } catch (boost::bad_weak_ptr) { + /* This must be during construction; never mind */ } } @@ -153,7 +172,7 @@ Content::set_position (DCPTime p) if (p == _position) { return; } - + _position = p; } @@ -161,7 +180,7 @@ Content::set_position (DCPTime p) } void -Content::set_trim_start (DCPTime t) +Content::set_trim_start (ContentTime t) { { boost::mutex::scoped_lock lm (_mutex); @@ -172,7 +191,7 @@ Content::set_trim_start (DCPTime t) } void -Content::set_trim_end (DCPTime t) +Content::set_trim_end (ContentTime t) { { boost::mutex::scoped_lock lm (_mutex); @@ -190,7 +209,7 @@ Content::clone () const if (!film) { return shared_ptr (); } - + /* 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"); @@ -210,17 +229,17 @@ Content::technical_summary () const DCPTime Content::length_after_trim () const { - return full_length() - trim_start() - trim_end(); + 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 - * its playlist. +/** @return string which changes when something about this content changes which affects + * the appearance of its video. */ string Content::identifier () const { - stringstream s; - + SafeStringStream s; + s << Content::digest() << "_" << position().get() << "_" << trim_start().get() @@ -254,7 +273,7 @@ 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) { @@ -263,3 +282,60 @@ Content::path_summary () const return s; } + +/** @return a list of properties that might be interesting to the user */ +list +Content::user_properties () const +{ + list p; + add_properties (p); + return p; +} + +shared_ptr +Content::film () const +{ + shared_ptr film = _film.lock (); + DCPOMATIC_ASSERT (film); + return film; +} + +/** @return DCP times of points within this content where a reel split could occur */ +list +Content::reel_split_points () const +{ + list t; + /* XXX: this is questionable; perhaps the position itself should be forced to be on a frame boundary */ + t.push_back (position().round_up (film()->video_frame_rate())); + return t; +} + +void +Content::set_video_frame_rate (double r) +{ + { + boost::mutex::scoped_lock lm (_mutex); + _video_frame_rate = r; + } + + signal_changed (ContentProperty::VIDEO_FRAME_RATE); +} + +double +Content::active_video_frame_rate () const +{ + { + boost::mutex::scoped_lock lm (_mutex); + if (_video_frame_rate) { + return _video_frame_rate.get (); + } + } + + /* No frame rate specified, so assume this content has been + prepared for any concurrent video content or perhaps + just the DCP rate. + */ + shared_ptr film = _film.lock (); + DCPOMATIC_ASSERT (film); + return film->active_frame_rate_change(position()).source; +}