-/*
- * Copyright (C) 2006-2011 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file grab_client.c Functions for grabbing the audio stream. */
#include <regex.h>
#include <sys/types.h>
-#include <dirent.h>
-#include <stdbool.h>
+#include <lopsub.h>
+
+#include "audiod_cmd.lsg.h"
#include "para.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
#include "buffer_tree.h"
-#include "filter.h"
#include "grab_client.h"
#include "audiod.h"
#include "error.h"
/** The point of the grab client's node in the buffer tree. */
struct btr_node *btrn;
/* The task of this grab client. */
- struct task task;
+ struct task *task;
/** Belongs to either the active or the inactive list. */
struct list_head node;
};
/* Grab clients that are attached to a btr node. */
-INITIALIZED_LIST_HEAD(active_grab_client_list);
+static INITIALIZED_LIST_HEAD(active_grab_client_list);
/* Grab clients that are not currently attached any btr node. */
-INITIALIZED_LIST_HEAD(inactive_grab_client_list);
+static INITIALIZED_LIST_HEAD(inactive_grab_client_list);
static int gc_write(struct grab_client *gc, char *buf, size_t len)
{
if (gc->mode == GM_SLOPPY)
return len;
}
- ret = write_nonblock(gc->fd, buf, len);
+ ret = xwrite(gc->fd, buf, len);
if (ret < 0)
goto err;
if (ret > 0)
return -E_GC_WRITE;
}
-static void gc_pre_select(struct sched *s, struct task *t)
+static void gc_pre_select(struct sched *s, void *context)
{
- struct grab_client *gc = container_of(t, struct grab_client, task);
+ struct grab_client *gc = context;
int ret = btr_node_status(gc->btrn, 0, BTR_NT_LEAF);
if (ret == 0)
* We need this forward declaration as post_select() needs
* activate_grab_client and vice versa.
*/
-static void gc_post_select(struct sched *s, struct task *t);
+static int gc_post_select(struct sched *s, void *context);
/**
* Move a grab client to the active list and start it.
*
* \param gc The grab client to activate.
*/
-static void gc_activate(struct grab_client *gc)
+static void gc_activate(struct grab_client *gc, struct sched *s)
{
struct btr_node *root = audiod_get_btr_root(), *parent;
char *name = gc->name? gc->name : "grab";
list_move(&gc->node, &active_grab_client_list);
gc->btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = name, .parent = parent));
- gc->task.pre_select = gc_pre_select;
- gc->task.post_select = gc_post_select;
- snprintf(gc->task.status, sizeof(gc->task.status) - 1, "%s", name);
- gc->task.status[sizeof(gc->task.status) - 1] = '\0';
- gc->task.error = 0;
- register_task(&gc->task);
+
+ gc->task = task_register(&(struct task_info) {
+ .name = name,
+ .pre_select = gc_pre_select,
+ .post_select = gc_post_select,
+ .context = gc,
+ }, s);
}
/**
* Activate inactive grab clients if possible.
*
+ * \param s Needed to schedule the grab client task.
+ *
* This is called from audiod.c when the current audio file changes. It loops
* over all inactive grab clients and checks each grab client's configuration
* to determine if the client in question wishes to grab the new stream. If
* This function also garbage collects all grab clients whose tasks have been
* unscheduled.
*/
-void activate_grab_clients(void)
+void activate_grab_clients(struct sched *s)
{
struct grab_client *gc, *tmp;
free(gc);
continue;
}
- gc_activate(gc);
+ gc_activate(gc, s);
}
}
static int gc_close(struct grab_client *gc, int err)
{
- btr_remove_node(gc->btrn);
- btr_free_node(gc->btrn);
- gc->btrn = NULL;
+ btr_remove_node(&gc->btrn);
PARA_INFO_LOG("closing gc: %s\n", para_strerror(-err));
list_move(&gc->node, &inactive_grab_client_list);
if (err == -E_GC_WRITE || (gc->flags & GF_ONE_SHOT)) {
return 0;
}
-static void gc_post_select(__a_unused struct sched *s, struct task *t)
+static int gc_post_select(__a_unused struct sched *s, void *context)
{
- struct grab_client *gc = container_of(t, struct grab_client, task);
+ struct grab_client *gc = context;
struct btr_node *btrn = gc->btrn;
int ret;
size_t sz;
char *buf;
- t->error = 0;
ret = btr_node_status(btrn, 0, BTR_NT_LEAF);
if (ret == 0)
- return;
+ return 0;
if (ret < 0)
goto err;
sz = btr_next_buffer(btrn, &buf);
goto err;
if (ret > 0)
btr_consume(btrn, ret);
- return;
+ return 0;
err:
gc_close(gc, ret);
- t->error = ret;
+ return ret;
}
-static int gc_check_args(int argc, char **argv, struct grab_client *gc)
+static int gc_check_args(struct lls_parse_result *lpr, struct grab_client *gc)
{
- int i;
+ const struct lls_opt_result *r;
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strncmp(arg, "-m", 2)) {
- if (*(arg + 3))
- return -E_GC_SYNTAX;
- switch(*(arg + 2)) {
- case 's':
- gc->mode = GM_SLOPPY;
- continue;
- case 'a':
- gc->mode = GM_AGGRESSIVE;
- continue;
- case 'p':
- gc->mode = GM_PEDANTIC;
- continue;
- default:
- return -E_GC_SYNTAX;
- }
- }
- if (!strcmp(arg, "-o")) {
- gc->flags |= GF_ONE_SHOT;
- continue;
- }
- if (!strncmp(arg, "-p=", 3)) {
- gc->parent = para_strdup(arg + 3);
- continue;
- }
- if (!strncmp(arg, "-n=", 3)) {
- gc->name = para_strdup(arg + 3);
- continue;
- }
- return -E_GC_SYNTAX;
+ r = lls_opt_result(LSG_AUDIOD_CMD_GRAB_OPT_MODE, lpr);
+ if (lls_opt_given(r) > 0) {
+ const char *arg = lls_string_val(0, r);
+ if (strcmp(arg, "s") == 0)
+ gc->mode = GM_SLOPPY;
+ else if (strcmp(arg, "a") == 0)
+ gc->mode = GM_AGGRESSIVE;
+ else if (strcmp(arg, "p") == 0)
+ gc->mode = GM_PEDANTIC;
+ else
+ return -E_GC_SYNTAX;
+ }
+
+ r = lls_opt_result(LSG_AUDIOD_CMD_GRAB_OPT_ONE_SHOT, lpr);
+ if (lls_opt_given(r) > 0)
+ gc->flags |= GF_ONE_SHOT;
+
+ r = lls_opt_result(LSG_AUDIOD_CMD_GRAB_OPT_PARENT, lpr);
+ if (lls_opt_given(r) > 0) {
+ const char *arg = lls_string_val(0, r);
+ gc->parent = para_strdup(arg);
+ }
+
+ r = lls_opt_result(LSG_AUDIOD_CMD_GRAB_OPT_NAME, lpr);
+ if (lls_opt_given(r) > 0) {
+ const char *arg = lls_string_val(0, r);
+ gc->name = para_strdup(arg);
}
- if (i != argc)
- return -E_GC_SYNTAX;
return 1;
}
/**
- * Check the command line options and allocate a grab_client structure.
+ * Create and activate a grab client.
*
* \param fd The file descriptor of the client.
- * \param argc Argument count.
- * \param argv Argument vector.
+ * \param lpr The parsed command line of the grab command.
+ * \param s The scheduler to register the grab client task to.
*
- * If the command line options given by \a argc and \a argv are valid.
- * allocate a struct grab_client and initialize it with this valid
- * configuration.
- *
- * If the new grab client can be added to an existing buffer tree, activate it.
- * Otherwise, add it to the inactive list for later activation.
+ * This function semantically parses the arguments given as options to the grab
+ * command. On success it allocates a struct grab_client, associates it with
+ * the given file descriptor and activates it. If the new grab client can not
+ * be attached to an existing buffer tree node it is put into the inactive list
+ * for later activation.
*
* \return Standard.
*/
-int grab_client_new(int fd, int argc, char **argv)
+int grab_client_new(int fd, struct lls_parse_result *lpr, struct sched *s)
{
int ret;
struct grab_client *gc = para_calloc(sizeof(struct grab_client));
- ret = gc_check_args(argc, argv, gc);
+ ret = gc_check_args(lpr, gc);
if (ret < 0)
goto err_out;
- gc->fd = fd;
+ ret = dup(fd);
+ if (ret < 0) {
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ goto err_out;
+ }
+ gc->fd = ret;
para_list_add(&gc->node, &inactive_grab_client_list);
- gc_activate(gc);
+ gc_activate(gc, s);
return 1;
err_out:
free(gc);
projects / paraslash.git / blobdiff