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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
Copyright (C) 2000-2007 Paul Davis
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
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,
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.
*/
/** @file src/util.h
* @brief Some utility functions and classes.
*/
#ifndef DVDOMATIC_UTIL_H
#define DVDOMATIC_UTIL_H
#include <string>
#include <vector>
#include <boost/shared_ptr.hpp>
#include <boost/asio.hpp>
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavfilter/avfilter.h>
}
#include "compose.hpp"
#ifdef DVDOMATIC_DEBUG
#define TIMING(...) _film->log()->microsecond_log (String::compose (__VA_ARGS__), Log::TIMING);
#else
#define TIMING(...)
#endif
class Scaler;
extern std::string seconds_to_hms (int);
extern std::string seconds_to_approximate_hms (int);
extern void stacktrace (std::ostream &, int);
extern std::string dependency_version_summary ();
extern double seconds (struct timeval);
extern void dvdomatic_setup ();
extern std::vector<std::string> split_at_spaces_considering_quotes (std::string);
extern std::string md5_digest (std::string);
extern std::string md5_digest (void const *, int);
extern void ensure_ui_thread ();
enum ContentType {
STILL,
VIDEO
};
/** @class Size
* @brief Representation of the size of something */
struct Size
{
/** Construct a zero Size */
Size ()
: width (0)
, height (0)
{}
/** @param w Width.
* @param h Height.
*/
Size (int w, int h)
: width (w)
, height (h)
{}
/** width */
int width;
/** height */
int height;
};
extern bool operator== (Size const & a, Size const & b);
/** A description of the crop of an image or video. */
struct Crop
{
Crop () : left (0), right (0), top (0), bottom (0) {}
/** Number of pixels to remove from the left-hand side */
int left;
/** Number of pixels to remove from the right-hand side */
int right;
/** Number of pixels to remove from the top */
int top;
/** Number of pixels to remove from the bottom */
int bottom;
};
extern bool operator== (Crop const & a, Crop const & b);
extern bool operator!= (Crop const & a, Crop const & b);
/** A position */
struct Position
{
Position ()
: x (0)
, y (0)
{}
Position (int x_, int y_)
: x (x_)
, y (y_)
{}
/** x coordinate */
int x;
/** y coordinate */
int y;
};
/** A rectangle */
struct Rect
{
Rect ()
: x (0)
, y (0)
, width (0)
, height (0)
{}
Rect (int x_, int y_, int w_, int h_)
: x (x_)
, y (y_)
, width (w_)
, height (h_)
{}
int x;
int y;
int width;
int height;
Position position () const {
return Position (x, y);
}
Size size () const {
return Size (width, height);
}
Rect intersection (Rect const & other) const;
};
extern std::string crop_string (Position, Size);
extern int dcp_audio_sample_rate (int);
extern std::string colour_lut_index_to_name (int index);
extern int round_up (int, int);
extern std::multimap<std::string, std::string> read_key_value (std::istream& s);
extern int get_required_int (std::multimap<std::string, std::string> const & kv, std::string k);
extern float get_required_float (std::multimap<std::string, std::string> const & kv, std::string k);
extern std::string get_required_string (std::multimap<std::string, std::string> const & kv, std::string k);
extern int get_optional_int (std::multimap<std::string, std::string> const & kv, std::string k);
extern std::string get_optional_string (std::multimap<std::string, std::string> const & kv, std::string k);
/** @class Socket
* @brief A class to wrap a boost::asio::ip::tcp::socket with some things
* that are useful for DVD-o-matic.
*
* This class wraps some things that I could not work out how to do with boost;
* most notably, sync read/write calls with timeouts, and the ability to peek into
* data being read.
*/
class Socket
{
public:
Socket ();
/** @return Our underlying socket */
boost::asio::ip::tcp::socket& socket () {
return _socket;
}
void connect (boost::asio::ip::basic_resolver_entry<boost::asio::ip::tcp> const & endpoint, int timeout);
void write (uint8_t const * data, int size, int timeout);
void read_definite_and_consume (uint8_t* data, int size, int timeout);
void read_indefinite (uint8_t* data, int size, int timeout);
void consume (int amount);
private:
void check ();
int read (uint8_t* data, int size, int timeout);
Socket (Socket const &);
boost::asio::io_service _io_service;
boost::asio::deadline_timer _deadline;
boost::asio::ip::tcp::socket _socket;
/** a buffer for small reads */
uint8_t _buffer[1024];
/** amount of valid data in the buffer */
int _buffer_data;
};
class AudioBuffers
{
public:
AudioBuffers (int channels, int frames);
~AudioBuffers ();
float** data () const {
return _data;
}
float* data (int) const;
int frames () const {
return _frames;
}
void set_frames (int f);
void make_silent ();
private:
/* no copy construction */
AudioBuffers (AudioBuffers const &);
int _channels;
int _frames;
float** _data;
};
#endif
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