+ int width;
+ int height;
+
+ Position position () const {
+ return Position (x, y);
+ }
+
+ libdcp::Size size () const {
+ return libdcp::Size (width, height);
+ }
+
+ Rect intersection (Rect const & other) const;
+};
+
+extern std::string crop_string (Position, libdcp::Size);
+extern int dcp_audio_sample_rate (int);
+extern std::string colour_lut_index_to_name (int index);
+extern int stride_round_up (int, int const *, int);
+extern int stride_lookup (int c, int const * stride);
+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.
+ */
+class Socket
+{
+public:
+ Socket (int timeout = 30);
+
+ /** @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);
+
+ void write (uint32_t n);
+ void write (uint8_t const * data, int size);
+
+ void read (uint8_t* data, int size);
+ uint32_t read_uint32 ();
+
+private:
+ void check ();
+
+ Socket (Socket const &);
+
+ boost::asio::io_service _io_service;
+ boost::asio::deadline_timer _deadline;
+ boost::asio::ip::tcp::socket _socket;
+ int _timeout;
+};
+
+/** @class AudioBuffers
+ * @brief A class to hold multi-channel audio data in float format.
+ */
+class AudioBuffers
+{
+public:
+ AudioBuffers (int channels, int frames);
+ AudioBuffers (AudioBuffers const &);
+ ~AudioBuffers ();
+
+ float** data () const {
+ return _data;
+ }
+
+ float* data (int) const;
+
+ int channels () const {
+ return _channels;
+ }
+
+ int frames () const {
+ return _frames;
+ }
+
+ void set_frames (int f);
+
+ void make_silent ();
+ void make_silent (int c);
+
+ void copy_from (AudioBuffers* from, int frames_to_copy, int read_offset, int write_offset);
+ void move (int from, int to, int frames);
+
+private:
+ /** Number of channels */
+ int _channels;
+ /** Number of frames (where a frame is one sample across all channels) */
+ int _frames;
+ /** Number of frames that _data can hold */
+ int _allocated_frames;
+ /** Audio data (so that, e.g. _data[2][6] is channel 2, sample 6) */
+ float** _data;