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_pre_select(__a_unused
struct sched
*s
, struct task
*t
)
33 struct writer_node_group
*g
= t
->private_data
;
36 FOR_EACH_WRITER_NODE(i
, g
) {
37 struct writer_node
*wn
= &g
->writer_nodes
[i
];
38 t
->ret
= wn
->writer
->pre_select(s
, wn
);
46 static void wng_post_select(struct sched
*s
, struct task
*t
)
48 struct writer_node_group
*g
= t
->private_data
;
50 size_t min_written
= 0;
52 FOR_EACH_WRITER_NODE(i
, g
) {
53 struct writer_node
*wn
= &g
->writer_nodes
[i
];
54 t
->ret
= wn
->writer
->post_select(s
, wn
);
62 min_written
= PARA_MIN(min_written
, t
->ret
);
64 *g
->loaded
-= min_written
;
65 if (!*g
->loaded
&& *g
->input_eof
) {
70 if (*g
->loaded
&& min_written
)
71 memmove(g
->buf
, g
->buf
+ min_written
, *g
->loaded
);
74 int wng_open(struct writer_node_group
*g
)
78 PARA_NOTICE_LOG("opening wng %p with %d writer(s)\n", g
, g
->num_writers
);
79 register_task(&g
->task
);
80 FOR_EACH_WRITER_NODE(i
, g
) {
81 struct writer_node
*wn
= &g
->writer_nodes
[i
];
83 ret
= wn
->writer
->open(wn
);
86 wn
->chunk_bytes
= ret
;
87 g
->max_chunk_bytes
= PARA_MAX(g
->max_chunk_bytes
, ret
);
89 sprintf(g
->task
.status
, "%s", "writer node group");
93 unregister_task(&g
->task
);
95 struct writer_node
*wn
= &g
->writer_nodes
[--i
];
96 wn
->writer
->close(wn
);
103 void wng_unregister(struct writer_node_group
*g
)
105 unregister_task(&g
->task
);
109 void wng_close(struct writer_node_group
*g
)
115 PARA_NOTICE_LOG("closing wng with %d writer(s)\n", g
->num_writers
);
116 FOR_EACH_WRITER_NODE(i
, g
) {
117 struct writer_node
*wn
= &g
->writer_nodes
[i
];
118 wn
->writer
->close(wn
);
121 free(g
->writer_nodes
);
125 struct writer_node_group
*wng_new(unsigned num_writers
)
127 struct writer_node_group
*g
= para_calloc(sizeof(struct writer_node_group
));
128 g
->num_writers
= num_writers
;
129 g
->writer_nodes
= para_calloc(num_writers
130 * sizeof(struct writer_node
));
131 g
->written
= para_calloc(num_writers
* sizeof(size_t));
132 g
->task
.private_data
= g
;
133 g
->task
.post_select
= wng_post_select
;
134 g
->task
.pre_select
= wng_pre_select
;
138 void init_supported_writers(void)
143 writers
[i
].init(&writers
[i
]);
146 void *check_writer_arg(char *wa
, int *writer_num
)
150 *writer_num
= -E_WRITE_COMMON_SYNTAX
;
151 PARA_INFO_LOG("checking %s\n", wa
);
153 const char *name
= writer_names
[i
];
154 size_t len
= strlen(name
);
156 if (strlen(wa
) < len
)
158 if (strncmp(name
, wa
, len
))
163 if (c
&& !writers
[i
].parse_config
)
166 return writers
[i
].parse_config(c
? wa
+ len
+ 1 : "");
168 PARA_ERROR_LOG("%s", "writer not found\n");
172 struct writer_node_group
*setup_default_wng(void)
174 struct writer_node_group
*wng
= wng_new(1);
175 enum writer_enum default_writer
;
177 if (NUM_SUPPORTED_WRITERS
== 1)
178 default_writer
= FILE_WRITE
;
181 wng
->writer_nodes
[0].writer
= &writers
[default_writer
];
182 PARA_INFO_LOG("using default writer: %s %p\n",
183 writer_names
[default_writer
], writers
[default_writer
].parse_config
);
184 wng
->writer_nodes
[0].conf
= writers
[default_writer
].parse_config("");