2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
3 Copyright (C) 2000-2007 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * @brief Some utility functions and classes.
25 #ifndef DCPOMATIC_UTIL_H
26 #define DCPOMATIC_UTIL_H
30 #include <boost/shared_ptr.hpp>
31 #include <boost/asio.hpp>
32 #include <boost/optional.hpp>
33 #include <boost/filesystem.hpp>
34 #include <libdcp/util.h>
35 #include <libdcp/signer.h>
37 #include <libavcodec/avcodec.h>
38 #include <libavfilter/avfilter.h>
40 #include "compose.hpp"
42 #include "video_content.h"
44 #ifdef DCPOMATIC_DEBUG
45 #define TIMING(...) _film->log()->microsecond_log (String::compose (__VA_ARGS__), Log::TIMING);
52 /** The maximum number of audio channels that we can cope with */
53 #define MAX_AUDIO_CHANNELS 6
55 #define DCPOMATIC_HELLO "Boys, you gotta learn not to talk to nuns that way"
63 extern std::string seconds_to_hms (int);
64 extern std::string seconds_to_approximate_hms (int);
65 extern void stacktrace (std::ostream &, int);
66 extern std::string dependency_version_summary ();
67 extern double seconds (struct timeval);
68 extern void dcpomatic_setup ();
69 extern void dcpomatic_setup_gettext_i18n (std::string);
70 extern std::vector<std::string> split_at_spaces_considering_quotes (std::string);
71 extern std::string md5_digest (std::vector<boost::filesystem::path>, boost::shared_ptr<Job>);
72 extern std::string md5_digest (void const *, int);
73 extern void ensure_ui_thread ();
74 extern std::string audio_channel_name (int);
75 extern bool valid_image_file (boost::filesystem::path);
76 #ifdef DCPOMATIC_WINDOWS
77 extern boost::filesystem::path mo_path ();
79 extern std::string tidy_for_filename (std::string);
80 extern boost::shared_ptr<const dcp::Signer> make_signer ();
81 extern dcp::Size fit_ratio_within (float ratio, dcp::Size);
83 struct FrameRateChange
85 FrameRateChange (float, int);
87 /** @return factor by which to multiply a source frame rate
88 to get the effective rate after any skip or repeat has happened.
90 float factor () const {
98 /** true to skip every other frame */
100 /** number of times to use each frame (e.g. 1 is normal, 2 means repeat each frame once, and so on) */
102 /** true if this DCP will run its video faster or slower than the source
103 * without taking into account `repeat' nor `skip'.
104 * (e.g. change_speed will be true if
105 * source is 29.97fps, DCP is 30fps
106 * source is 14.50fps, DCP is 30fps
108 * source is 15.00fps, DCP is 30fps
109 * source is 12.50fps, DCP is 25fps)
113 /** Amount by which the video is being sped-up in the DCP; e.g. for a
114 * 24fps source in a 25fps DCP this would be 25/24.
118 std::string description;
121 extern int dcp_audio_frame_rate (int);
122 extern int stride_round_up (int, int const *, int);
123 extern DCPTime time_round_up (DCPTime, DCPTime);
124 extern std::multimap<std::string, std::string> read_key_value (std::istream& s);
125 extern int get_required_int (std::multimap<std::string, std::string> const & kv, std::string k);
126 extern float get_required_float (std::multimap<std::string, std::string> const & kv, std::string k);
127 extern std::string get_required_string (std::multimap<std::string, std::string> const & kv, std::string k);
128 extern int get_optional_int (std::multimap<std::string, std::string> const & kv, std::string k);
129 extern std::string get_optional_string (std::multimap<std::string, std::string> const & kv, std::string k);
130 extern void* wrapped_av_malloc (size_t);
133 * @brief A class to wrap a boost::asio::ip::tcp::socket with some things
134 * that are useful for DCP-o-matic.
136 * This class wraps some things that I could not work out how to do with boost;
137 * most notably, sync read/write calls with timeouts.
142 Socket (int timeout = 30);
145 /** @return Our underlying socket */
146 boost::asio::ip::tcp::socket& socket () {
150 void connect (boost::asio::ip::tcp::endpoint);
153 void write (uint32_t n);
154 void write (uint8_t const * data, int size);
156 void read (uint8_t* data, int size);
157 uint32_t read_uint32 ();
162 Socket (Socket const &);
164 boost::asio::io_service _io_service;
165 boost::asio::deadline_timer _deadline;
166 boost::asio::ip::tcp::socket _socket;
167 boost::asio::ip::tcp::acceptor* _acceptor;
171 extern int64_t video_frames_to_audio_frames (VideoFrame v, float audio_sample_rate, float frames_per_second);