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 */
26 const char *writer_names
[] ={WRITER_NAMES
};
27 struct writer writers
[NUM_SUPPORTED_WRITERS
] = {WRITER_ARRAY
};
29 int wng_write(struct writer_node_group
*g
, char *buf
, size_t *loaded
)
31 int ret
, i
, need_more_writes
= 1;
32 size_t min_written
= 0;
34 while (need_more_writes
) {
36 FOR_EACH_WRITER_NODE(i
, g
) {
37 size_t w
= g
->written
[i
];
38 unsigned char *p
= buf
+ w
;
40 struct writer_node
*wn
= &g
->writer_nodes
[i
];
44 min_written
= PARA_MIN(min_written
, w
);
47 if (!g
->eof
&& (*loaded
< wn
->chunk_bytes
+ w
))
49 bytes_to_write
= PARA_MIN(wn
->chunk_bytes
,
51 ret
= wn
->writer
->write(p
, bytes_to_write
, wn
);
54 if (ret
!= bytes_to_write
)
55 PARA_WARNING_LOG("short write: %d/%d\n", ret
,
61 *loaded
-= min_written
;
66 memmove(buf
, buf
+ min_written
, *loaded
);
67 FOR_EACH_WRITER_NODE(i
, g
)
68 g
->written
[i
] -= min_written
;
74 int wng_open(struct writer_node_group
*g
)
78 FOR_EACH_WRITER_NODE(i
, g
) {
79 struct writer_node
*wn
= &g
->writer_nodes
[i
];
80 ret
= wn
->writer
->open(wn
);
83 wn
->chunk_bytes
= ret
;
84 g
->max_chunk_bytes
= PARA_MAX(g
->max_chunk_bytes
, ret
);
90 void wng_close(struct writer_node_group
*g
)
94 FOR_EACH_WRITER_NODE(i
, g
) {
95 struct writer_node
*wn
= &g
->writer_nodes
[i
];
96 wn
->writer
->close(wn
);
100 struct writer_node_group
*wng_new(unsigned num_writers
)
102 struct writer_node_group
*g
= para_calloc(sizeof(struct writer_node_group
));
103 g
->num_writers
= num_writers
;
104 g
->writer_nodes
= para_calloc(num_writers
105 * sizeof(struct writer_node
));
106 g
->written
= para_calloc(num_writers
* sizeof(size_t));
110 void wng_destroy(struct writer_node_group
*g
)
115 free(g
->writer_nodes
);
119 void init_supported_writers(void)
124 writers
[i
].init(&writers
[i
]);
127 int check_writer_arg(const char *arg
)
129 int i
, ret
= -E_WRITE_COMMON_SYNTAX
;
130 char *a
= para_strdup(arg
), *p
= strchr(a
, ':');
135 if (strcmp(writer_names
[i
], a
))
145 struct writer_node_group
*setup_default_wng(void)
147 struct writer_node_group
*wng
= wng_new(1);
148 enum writer_enum default_writer
;
150 if (NUM_SUPPORTED_WRITERS
== 1)
151 default_writer
= FILE_WRITE
;
154 wng
->writer_nodes
[0].writer
= &writers
[default_writer
];
155 PARA_INFO_LOG("using default writer: %s\n",
156 writer_names
[default_writer
]);