X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=send.h;h=94d8afd82e1c40bbacfdbf501c951e08551362d4;hp=bf1ca111f7f88cf300f0c18f9c1c93930549ea99;hb=8268a10edbdbb77d9e1b82a27dcc5b2b465412d1;hpb=8b2c02c8d6255583982e767374d39375b3380c4d diff --git a/send.h b/send.h index bf1ca111..94d8afd8 100644 --- a/send.h +++ b/send.h @@ -1,108 +1,89 @@ -/** \file send.h sender-related defines and structures */ -/** the sender subcommands */ -enum {SENDER_ADD, SENDER_DELETE, SENDER_ALLOW, SENDER_DENY, SENDER_ON, SENDER_OFF}; +/* + * Copyright (C) 2005-2008 Andre Noll + * + * Licensed under the GPL v2. For licencing details see COPYING. + */ -/** the number of sender subcommands */ -#define NUM_SENDER_CMDS (SENDER_OFF + 1) +/** \file send.h Sender-related defines and structures. */ + +/** The sender subcommands. */ +enum {SENDER_ADD, SENDER_DELETE, SENDER_ALLOW, SENDER_DENY, SENDER_ON, SENDER_OFF, NUM_SENDER_CMDS}; /** - * describes one supported sender of para_server + * Describes one supported sender of para_server. * - * \sa http_send.c ortp_send.c + * \sa http_send.c ortp_send.c, dccp_send.c. */ struct sender { -/** the name of the sender */ + /** The name of the sender. */ const char *name; -/** - * the init function of this sender - * - * It must fill in all function pointers of \a s as well as the \a client_cmds - * array, see below. It should also do all neccessary preparations to init - * this sending facility, for example it could open a tcp port. - */ + /** + * The init function of this sender. + * + * It must fill in all function pointers of \a s as well as the \a + * client_cmds array, see below. It should also do all necessary + * preparations to init this sending facility, for example it could + * open a tcp port. + */ void (*init)(struct sender *s); -/** \p SENDER_ON or \p SENDER_OFF */ - int status; -/** - * return the help text of this sender - * - * The result must be dynamically allocated and is freed by the caller. - */ + /** + * Return the help text of this sender. + * + * The result must be dynamically allocated and is freed by the caller. + */ char* (*help)(void); -/** - * return current status info about this sender - * - * The result must be dynamically allocated and is freed by the caller. - */ + /** + * Return current status info about this sender. + * + * The result must be dynamically allocated and is freed by the caller. + */ char* (*info)(void); -/** - * the send-hook - * - * It gets called whenever para_server is playing and the current - * audio format handler indicates that another chunk of data should - * be sent now. The two parameters \a current_chunk and \a chunks_sent - * only differ if the stream was repositioned by the \a ff or \a jmp - * command. Of course, \a buf is a pointer to the chunk of data which - * should be sent, and \a len is the length of this buffer. -*/ + /** + * The send-hook. + * + * It gets called whenever para_server is playing and the current + * audio format handler indicates that another chunk of data should + * be sent now. The two parameters \a current_chunk and \a chunks_sent + * only differ if the stream was repositioned by the \a ff or \a jmp + * command. Of course, \a buf is a pointer to the chunk of data which + * should be sent, and \a len is the length of this buffer. + */ void (*send)(long unsigned current_chunk, long unsigned chunks_sent, const char *buf, size_t len); -/** add file descriptors to fd_sets - * - * The pre_select function of each supported sender is called just before - * para_server enters its main select loop. Each sender may add its own - * file descriptors to the \a rfds or the \a wfds set. - * - * If a file descriptor was added, \a max_fileno must be increased by - * this function, if neccessary. - * - * \sa select(2) -*/ + /** + * Add file descriptors to fd_sets. + * + * The pre_select function of each supported sender is called just before + * para_server enters its main select loop. Each sender may add its own + * file descriptors to the \a rfds or the \a wfds set. + * + * If a file descriptor was added, \a max_fileno must be increased by + * this function, if necessary. + * + * \sa select(2). + */ void (*pre_select)(int *max_fileno, fd_set *rfds, fd_set *wfds); -/** - * handle the file descriptors which are ready for I/O - * - * If the pre_select hook added one ore more file descriptors to the read or write - * set, this is the hook to check the result and do any I/O on those descriptors - * which are ready for reading/writing. - */ + /** + * Handle the file descriptors which are ready for I/O. + * + * If the pre_select hook added one ore more file descriptors to the + * read or write set, this is the hook to check the result and do any + * I/O on those descriptors which are ready for reading/writing. + */ void (*post_select)(fd_set *rfds, fd_set *wfds); -/** - * terminate all connected clients - * - * This is called e.g. if the stop command was executed. It should make the clients - * aware of the end-of-file condition. - */ + /** + * Terminate all connected clients. + * + * This is called e.g. if the stop command was executed. It should make + * the clients aware of the end-of-file condition. + */ void (*shutdown_clients)(void); -/** - * array of function pointers for the sender subcommands - * - * Each sender may implement any subset of the sender commands by filling in - * the aprropriate function pointer in the array. A \p NULL pointer means this - * command is not implemented by this sender. - */ + /** + * Array of function pointers for the sender subcommands. + * + * Each sender may implement any subset of the sender commands by + * filling in the appropriate function pointer in the array. A \p NULL + * pointer means this command is not implemented by this sender. + */ int (*client_cmds[NUM_SENDER_CMDS])(struct sender_command_data*); }; - -/** - * check a file descriptor for writability - * - * \param fd the file desctiptor - * - * \return positive if fd is ready for writing, zero if it isn't, negative if - * an error occured. - */ - -static inline int write_ok(int fd) -{ - struct timeval tv = {0, 0}; - fd_set wfds; - int ret; -again: - FD_ZERO(&wfds); - FD_SET(fd, &wfds); - ret = select(fd + 1, NULL, &wfds, NULL, &tv); - if (ret < 0 && errno == EINTR) - goto again; - return ret; -}