2 * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file write_common.c common functions of para_audiod and para_write */
28 const char *writer_names
[] ={WRITER_NAMES
};
29 struct writer writers
[NUM_SUPPORTED_WRITERS
] = {WRITER_ARRAY
};
31 static void wng_post_select(struct sched
*s
, struct task
*t
)
33 struct writer_node_group
*g
= t
->private_data
;
35 size_t min_written
= 0;
37 FOR_EACH_WRITER_NODE(i
, g
) {
38 struct writer_node
*wn
= &g
->writer_nodes
[i
];
39 t
->ret
= wn
->task
.ret
;
45 min_written
= PARA_MIN(min_written
, t
->ret
);
47 *g
->loaded
-= min_written
;
48 if (!*g
->loaded
&& *g
->eof
)
52 if (*g
->loaded
&& min_written
)
53 memmove(g
->buf
, g
->buf
+ min_written
, *g
->loaded
);
56 int wng_open(struct writer_node_group
*g
)
60 FOR_EACH_WRITER_NODE(i
, g
) {
61 struct writer_node
*wn
= &g
->writer_nodes
[i
];
62 ret
= wn
->writer
->open(wn
);
65 wn
->chunk_bytes
= ret
;
66 g
->max_chunk_bytes
= PARA_MAX(g
->max_chunk_bytes
, ret
);
68 PARA_DEBUG_LOG("pre_select: %p\n", &wn
->writer
->pre_select
);
69 PARA_DEBUG_LOG("post_select: %p\n", &wn
->writer
->post_select
);
70 wn
->task
.pre_select
= wn
->writer
->pre_select
;
71 wn
->task
.post_select
= wn
->writer
->post_select
;
72 wn
->task
.private_data
= wn
;
73 register_task(&wn
->task
);
75 register_task(&g
->task
);
80 void wng_destroy(struct writer_node_group
*g
)
85 free(g
->writer_nodes
);
89 void wng_close(struct writer_node_group
*g
)
93 FOR_EACH_WRITER_NODE(i
, g
) {
94 struct writer_node
*wn
= &g
->writer_nodes
[i
];
95 unregister_task(&wn
->task
);
96 wn
->writer
->close(wn
);
100 static void wng_event_handler(struct task
*t
)
102 struct writer_node_group
*g
= t
->private_data
;
104 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
110 struct writer_node_group
*wng_new(unsigned num_writers
)
112 struct writer_node_group
*g
= para_calloc(sizeof(struct writer_node_group
));
113 g
->num_writers
= num_writers
;
114 g
->writer_nodes
= para_calloc(num_writers
115 * sizeof(struct writer_node
));
116 g
->written
= para_calloc(num_writers
* sizeof(size_t));
117 g
->task
.private_data
= g
;
118 g
->task
.post_select
= wng_post_select
;
119 g
->task
.event_handler
= wng_event_handler
;
120 g
->task
.flags
= POST_ADD_TAIL
;
124 void init_supported_writers(void)
129 writers
[i
].init(&writers
[i
]);
132 int check_writer_arg(const char *arg
)
134 int i
, ret
= -E_WRITE_COMMON_SYNTAX
;
135 char *a
= para_strdup(arg
), *p
= strchr(a
, ':');
140 if (strcmp(writer_names
[i
], a
))
150 struct writer_node_group
*setup_default_wng(void)
152 struct writer_node_group
*wng
= wng_new(1);
153 enum writer_enum default_writer
;
155 if (NUM_SUPPORTED_WRITERS
== 1)
156 default_writer
= FILE_WRITE
;
159 wng
->writer_nodes
[0].writer
= &writers
[default_writer
];
160 sprintf(wng
->writer_nodes
[0].task
.status
, "%s",
161 writer_names
[default_writer
]);
162 PARA_INFO_LOG("using default writer: %s\n",
163 writer_names
[default_writer
]);