2 * Copyright (C) 2006-2013 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file recv_common.c common functions of para_recv and para_audiod */
15 #include "buffer_tree.h"
20 * Call the init function of each paraslash receiver.
27 receivers[i].init(&receivers[i]);
30 static void *parse_receiver_args(int receiver_num, char *options)
32 struct receiver *r = &receivers[receiver_num];
38 argc = create_shifted_argv(options, " \t", &argv);
43 argv = para_malloc(2 * sizeof(char*));
46 argv[0] = make_message("%s_recv", r->name);
47 conf = r->parse_config(argc, argv);
53 * check if given string is a valid command line for any receiver
55 * \param \ra string of the form receiver_name:options
56 * \param receiver_num contains the number of the receiver upon success
58 * This function checks whether \a ra starts with the name of a supported
59 * paraslash receiver, optinally followed by a colon and any options for that
60 * receiver. If a valid receiver name was found and further are present, the
61 * remaining part of \a ra is passed to that receiver's config parser.
63 * \return On success, a pointer to the gengetopt args info struct is returned
64 * and \a receiver_num contains the number of the receiver. Otherwise this function
67 void *check_receiver_arg(char *ra, int *receiver_num)
71 PARA_DEBUG_LOG("checking %s\n", ra);
72 for (j = 0; receivers[j].name; j++) {
73 const char *name = receivers[j].name;
74 size_t len = strlen(name);
78 if (strncmp(name, ra, len))
83 if (c && !receivers[j].parse_config)
86 return parse_receiver_args(j, c? ra + len + 1: NULL);
88 PARA_ERROR_LOG("receiver not found\n");
93 * Print out the help texts to all receivers.
95 * \param flags Passed to \ref ggo_print_help().
97 void print_receiver_helps(unsigned flags)
101 printf_or_die("\nAvailable receivers: ");
103 printf_or_die("%s%s", i? " " : "", receivers[i].name);
105 FOR_EACH_RECEIVER(i) {
106 struct receiver *r = receivers + i;
107 if (!r->help.short_help)
109 printf_or_die("\n%s: %s", r->name,
111 ggo_print_help(&r->help, flags);
116 * Simple pre-select hook, used by all receivers.
118 * \param s Scheduler info.
119 * \param t Determines the receiver node.
121 * This requests a minimal delay from the scheduler if the status of the buffer
122 * tree node indicates an error/eof condition. No file descriptors are added to
123 * the fd sets of \a s.
125 * \return The status of the btr node of the receiver node, i.e. the return
126 * value of the underlying call to \ref btr_node_status().
128 int generic_recv_pre_select(struct sched *s, struct task *t)
130 struct receiver_node *rn = container_of(t, struct receiver_node, task);
131 int ret = btr_node_status(rn->btrn, 0, BTR_NT_ROOT);