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 DVDOMATIC_UTIL_H
26 #define DVDOMATIC_UTIL_H
30 #include <boost/shared_ptr.hpp>
31 #include <boost/asio.hpp>
33 #include <libavcodec/avcodec.h>
34 #include <libavfilter/avfilter.h>
36 #include "compose.hpp"
38 #ifdef DVDOMATIC_DEBUG
39 #define TIMING(...) _log->microsecond_log (String::compose (__VA_ARGS__), Log::TIMING);
46 extern std::string seconds_to_hms (int);
47 extern std::string seconds_to_approximate_hms (int);
48 extern void stacktrace (std::ostream &, int);
49 extern std::string audio_sample_format_to_string (AVSampleFormat);
50 extern AVSampleFormat audio_sample_format_from_string (std::string);
51 extern std::string dependency_version_summary ();
52 extern double seconds (struct timeval);
53 extern void dvdomatic_setup ();
54 extern std::vector<std::string> split_at_spaces_considering_quotes (std::string);
55 extern std::string md5_digest (std::string);
56 extern std::string md5_digest (void const *, int);
64 * @brief Representation of the size of something */
67 /** Construct a zero Size */
87 /** A description of the crop of an image or video. */
90 Crop () : left (0), right (0), top (0), bottom (0) {}
92 /** Number of pixels to remove from the left-hand side */
94 /** Number of pixels to remove from the right-hand side */
96 /** Number of pixels to remove from the top */
98 /** Number of pixels to remove from the bottom */
102 extern bool operator== (Crop const & a, Crop const & b);
103 extern bool operator!= (Crop const & a, Crop const & b);
113 Position (int x_, int y_)
124 extern std::string crop_string (Position, Size);
125 extern int dcp_audio_sample_rate (int);
126 extern std::string colour_lut_index_to_name (int index);
129 * @brief A class to wrap a boost::asio::ip::tcp::socket with some things
130 * that are useful for DVD-o-matic.
132 * This class wraps some things that I could not work out how to do with boost;
133 * most notably, sync read/write calls with timeouts, and the ability to peak into
141 /** @return Our underlying socket */
142 boost::asio::ip::tcp::socket& socket () {
146 void connect (boost::asio::ip::basic_resolver_entry<boost::asio::ip::tcp> const & endpoint, int timeout);
147 void write (uint8_t const * data, int size, int timeout);
149 void read_definite_and_consume (uint8_t* data, int size, int timeout);
150 void read_indefinite (uint8_t* data, int size, int timeout);
151 void consume (int amount);
155 int read (uint8_t* data, int size, int timeout);
157 Socket (Socket const &);
159 boost::asio::io_service _io_service;
160 boost::asio::deadline_timer _deadline;
161 boost::asio::ip::tcp::socket _socket;
162 /** a buffer for small reads */
163 uint8_t _buffer[256];
164 /** amount of valid data in the buffer */
169 #define ONE_HALF (1 << (SCALEBITS - 1))
170 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
172 #define RGB_TO_Y_CCIR(r, g, b) \
173 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
174 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
176 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
177 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
178 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
180 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
181 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
182 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)