X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=input.h;h=79cfc54183dfb9bdfee82e25a3448ccdc7ae7bd1;hp=8b536c47f32d644e4c7e195b12420c5bbc26a201;hb=ca9624c43b968a0f29ea44e47851ff686bb64bb6;hpb=e20ad47985bdda71b7b58c26932dad9a3a50c066 diff --git a/input.h b/input.h index 8b536c4..79cfc54 100644 --- a/input.h +++ b/input.h @@ -1,86 +1,27 @@ #ifndef _INPUT_H #define _INPUT_H 1 -#include #include -class InputProto; - -class Input { -public: - Input(const std::string &stream_id, const std::string &url); - - // Serialization/deserialization. - Input(const InputProto &serialized); - InputProto serialize() const; - - // Connect to the given URL and start streaming. - void run(); - - // Stops the streaming, but lets the file descriptor stay open. - void stop(); - - std::string get_url() const { return url; } - -private: - // Recovers the this pointer and calls do_work(). - static void *do_work_thunk(void *arg); - - // Actually does the download. - void do_work(); - - // Open a socket that connects to the given host and port. Does DNS resolving. - int lookup_and_connect(const std::string &host, const std::string &port); - - // Stores the given data, looks for Metacube blocks (skipping data if needed), - // and calls process_block() for each one. - void process_data(char *ptr, size_t bytes); +#include "thread.h" - // Drops bytes from the head of , - // and outputs a warning. - void drop_pending_data(size_t num_bytes); - - enum State { - NOT_CONNECTED, - SENDING_REQUEST, - RECEIVING_HEADER, - RECEIVING_DATA, - CLOSING_SOCKET, // Due to error. - }; - State state; - - std::string stream_id; - - // The URL and its parsed components. - std::string url; - std::string host, port, path; - - // The HTTP request, with headers and all. - // Only relevant for SENDING_REQUEST. - std::string request; - - // How many bytes we've sent of the request so far. - // Only relevant for SENDING_REQUEST. - size_t request_bytes_sent; - - // The HTTP response we've received so far. Only relevant for RECEIVING_HEADER. - std::string response; - - // Data we have received but not fully processed yet. - std::vector pending_data; - - // If starts with a Metacube header, - // this is true. - bool has_metacube_header; +class Input; +class InputProto; - // The socket we are downloading on (or -1). - int sock; +// Extremely rudimentary URL parsing. +bool parse_url(const std::string &url, std::string *protocol, std::string *host, std::string *port, std::string *path); - // Handle to the thread that actually does the download. - pthread_t worker_thread; +// Figure out the right type of input based on the URL, and create a new Input of the right type. +// Will return NULL if unknown. +Input *create_input(const std::string &stream_id, const std::string &url); +Input *create_input(const InputProto &serialized); - // Whether we should stop or not. - volatile bool should_stop; +class Input : public Thread { +public: + virtual ~Input(); + virtual InputProto serialize() const = 0; + virtual std::string get_url() const = 0; + virtual void close_socket() = 0; }; #endif // !defined(_INPUT_H)