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>
32 #include <libdcp/util.h>
34 #include <libavcodec/avcodec.h>
35 #include <libavfilter/avfilter.h>
37 #include "compose.hpp"
39 #ifdef DVDOMATIC_DEBUG
40 #define TIMING(...) _film->log()->microsecond_log (String::compose (__VA_ARGS__), Log::TIMING);
45 /** The maximum number of audio channels that we can cope with */
46 #define MAX_AUDIO_CHANNELS 6
50 extern std::string seconds_to_hms (int);
51 extern std::string seconds_to_approximate_hms (int);
52 extern void stacktrace (std::ostream &, int);
53 extern std::string dependency_version_summary ();
54 extern double seconds (struct timeval);
55 extern void dvdomatic_setup ();
56 extern std::vector<std::string> split_at_spaces_considering_quotes (std::string);
57 extern std::string md5_digest (std::string);
58 extern std::string md5_digest (void const *, int);
59 extern void ensure_ui_thread ();
60 extern std::string audio_channel_name (int);
62 typedef int SourceFrame;
68 /** @return factor by which to multiply a source frame rate
69 to get the effective rate after any skip or repeat has happened.
71 float factor () const {
81 /** frames per second for the DCP */
82 int frames_per_second;
83 /** true to skip every other frame */
85 /** true to repeat every frame once */
87 /** true if this DCP will run its video faster or slower than the source
88 * without taking into account `repeat'.
89 * (e.g. change_speed will be true if
90 * source is 29.97fps, DCP is 30fps
91 * source is 14.50fps, DCP is 30fps
93 * source is 15.00fps, DCP is 30fps
94 * source is 12.50fps, DCP is 25fps)
100 STILL, ///< content is still images
101 VIDEO ///< content is a video
105 * @brief A description of the crop of an image or video.
109 Crop () : left (0), right (0), top (0), bottom (0) {}
111 /** Number of pixels to remove from the left-hand side */
113 /** Number of pixels to remove from the right-hand side */
115 /** Number of pixels to remove from the top */
117 /** Number of pixels to remove from the bottom */
121 extern bool operator== (Crop const & a, Crop const & b);
122 extern bool operator!= (Crop const & a, Crop const & b);
134 Position (int x_, int y_)
146 * @brief A rectangle.
157 Rect (int x_, int y_, int w_, int h_)
169 Position position () const {
170 return Position (x, y);
173 libdcp::Size size () const {
174 return libdcp::Size (width, height);
177 Rect intersection (Rect const & other) const;
180 extern std::string crop_string (Position, libdcp::Size);
181 extern int dcp_audio_sample_rate (int);
182 extern int dcp_audio_channels (int);
183 extern std::string colour_lut_index_to_name (int index);
184 extern int stride_round_up (int, int const *, int);
185 extern int stride_lookup (int c, int const * stride);
186 extern std::multimap<std::string, std::string> read_key_value (std::istream& s);
187 extern int get_required_int (std::multimap<std::string, std::string> const & kv, std::string k);
188 extern float get_required_float (std::multimap<std::string, std::string> const & kv, std::string k);
189 extern std::string get_required_string (std::multimap<std::string, std::string> const & kv, std::string k);
190 extern int get_optional_int (std::multimap<std::string, std::string> const & kv, std::string k);
191 extern std::string get_optional_string (std::multimap<std::string, std::string> const & kv, std::string k);
194 * @brief A class to wrap a boost::asio::ip::tcp::socket with some things
195 * that are useful for DVD-o-matic.
197 * This class wraps some things that I could not work out how to do with boost;
198 * most notably, sync read/write calls with timeouts.
203 Socket (int timeout = 30);
205 /** @return Our underlying socket */
206 boost::asio::ip::tcp::socket& socket () {
210 void connect (boost::asio::ip::basic_resolver_entry<boost::asio::ip::tcp> const & endpoint);
212 void write (uint32_t n);
213 void write (uint8_t const * data, int size);
215 void read (uint8_t* data, int size);
216 uint32_t read_uint32 ();
221 Socket (Socket const &);
223 boost::asio::io_service _io_service;
224 boost::asio::deadline_timer _deadline;
225 boost::asio::ip::tcp::socket _socket;
229 /** @class AudioBuffers
230 * @brief A class to hold multi-channel audio data in float format.
235 AudioBuffers (int channels, int frames);
236 AudioBuffers (AudioBuffers const &);
239 float** data () const {
243 float* data (int) const;
245 int channels () const {
249 int frames () const {
253 void set_frames (int f);
256 void make_silent (int c);
258 void copy_from (AudioBuffers* from, int frames_to_copy, int read_offset, int write_offset);
259 void move (int from, int to, int frames);
262 /** Number of channels */
264 /** Number of frames (where a frame is one sample across all channels) */
266 /** Number of frames that _data can hold */
267 int _allocated_frames;
268 /** Audio data (so that, e.g. _data[2][6] is channel 2, sample 6) */
272 extern int64_t video_frames_to_audio_frames (SourceFrame v, float audio_sample_rate, float frames_per_second);
273 extern bool still_image_file (std::string);
274 extern std::pair<std::string, int> cpu_info ();