X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=audiod.h;h=2d8fec1a24b9827ac8bd2e2ab0616639025ae14b;hp=234c67a0d9eb9d09643544a498d96e5be5d69093;hb=a4eb244ecdf9aaa0f167b3c91d3e276bde99d681;hpb=3392bf543022cae60dad0ed76486b574a76b1d66 diff --git a/audiod.h b/audiod.h index 234c67a0..2d8fec1a 100644 --- a/audiod.h +++ b/audiod.h @@ -1,6 +1,14 @@ +/* + * Copyright (C) 2006-2009 Andre Noll + * + * Licensed under the GPL v2. For licencing details see COPYING. + */ + /** \file audiod.h symbols exported from audiod.c */ + + int num_filters(int audio_format_num); -int get_audio_format_num(char *name); +int get_audio_format_num(const char *name); /** enum of audio formats supported by para_audiod */ enum {AUDIOD_AUDIO_FORMATS_ENUM}; @@ -17,82 +25,61 @@ extern const char *audio_formats[]; * - off: disconnect from para_server * - on: receive status information from para_server and play the audio stream * - sb: only receive status information but not the audio stream -*/ -enum {AUDIOD_OFF, AUDIOD_ON, AUDIOD_STANDBY}; + */ +enum audiod_status_info {AUDIOD_OFF, AUDIOD_ON, AUDIOD_STANDBY}; + +/** defines one command of para_audiod */ +struct audiod_command { + /** the name of the command */ + const char *name; + /** pointer to the function that handles the command */ + int (*handler)(int, int, char**); + /** one-line description of the command */ + const char *description; + /** summary of the command line options */ + const char *usage; + /** the long help text */ + const char *help; +}; /** - * describes one instance of a receiver-filter-writer chain + * Describes one instance of a receiver-filter-writer chain. * - * \sa receier_node, receiver, filter, filter_node, filter_chain, writer, + * \sa receiver_node, receiver, filter, filter_node, filter_chain, writer, * writer_node, writer_node_group. - */ + */ struct slot_info { - /** number of the audio format in this slot */ + /** Number of the audio format in this slot. */ int format; - /** writer start time */ + /** Receiver start time. */ + struct timeval rstime; + /** Writer start time. */ struct timeval wstime; - /** the receiver info associated with this slot */ + /** The stream_start status item announced by para_server. */ + struct timeval server_stream_start; + /** The offset status item announced by para_server. */ + unsigned offset_seconds; + /** The seconds_total status item announced by para_server. */ + unsigned seconds_total; + /** The receiver info associated with this slot. */ struct receiver_node *receiver_node; - /** the active filter chain */ + /** The active filter chain. */ struct filter_chain *fc; - /** the active writer node group */ + /** The active writer node group. */ struct writer_node_group *wng; }; -/** - * the main task of audiod - * - * \sa struct task, struct sched - */ -struct audiod_task { - struct timeval *now; - struct task task; -}; - -/** - * the task for obtaining para_server's status (para_client stat) - * - * \sa struct task, struct sched - */ -struct status_task { - /** the associated task structure of audiod */ - struct task task; - /** client data associated with the stat task */ - struct private_client_data *pcd; - /** the array of status items sent by para_server */ - char *stat_item_values[NUM_STAT_ITEMS]; - /** do not restart client command until this time */ - struct timeval restart_barrier; - /** last time we received status data from para_server */ - struct timeval last_status_read; - /** the offset value announced by para_server */ - int offset_seconds; - /** the length of the current audio file as announced by para_server */ - int length_seconds; - /** the start of the current stream from the view of para_server */ - struct timeval server_stream_start; - /** the average time deviation between para_server and para_audiod */ - struct timeval sa_time_diff; - /** whether client time is ahead of server time */ - int sa_time_diff_sign; - /** non-zero if para_server's status is "playing" */ - int playing; - /** number of times the clock difference is to be checked */ - unsigned clock_diff_count; - /** when to start the next check for clock difference */ - struct timeval clock_diff_barrier; -}; - -extern struct status_task *stat_task; extern struct slot_info slot[MAX_STREAM_SLOTS]; extern struct audiod_args_info conf; extern int audiod_status; -extern const char *status_item_list[NUM_STAT_ITEMS]; void __noreturn clean_exit(int status, const char *msg); int handle_connect(int accept_fd); void audiod_status_dump(void); -void dump_empty_status(void); +char *get_time_string(int slot_num); + +void stat_client_write_item(int item_num); +void clear_and_dump_items(void); /** iterate over all slots */ #define FOR_EACH_SLOT(_slot) for (_slot = 0; _slot < MAX_STREAM_SLOTS; _slot++)