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(__a_unused 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;
47 min_written = PARA_MIN(min_written, t->ret);
49 *g->loaded -= min_written;
50 if (!*g->loaded && *g->input_eof) {
55 if (*g->loaded && min_written)
56 memmove(g->buf, g->buf + min_written, *g->loaded);
59 int wng_open(struct writer_node_group *g)
63 PARA_NOTICE_LOG("opening wng %p with %d writer(s)\n", g, g->num_writers);
64 register_task(&g->task);
65 FOR_EACH_WRITER_NODE(i, g) {
66 struct writer_node *wn = &g->writer_nodes[i];
68 ret = wn->writer->open(wn);
71 wn->chunk_bytes = ret;
72 g->max_chunk_bytes = PARA_MAX(g->max_chunk_bytes, ret);
73 wn->task.pre_select = wn->writer->pre_select;
74 wn->task.post_select = wn->writer->post_select;
75 wn->task.private_data = wn;
76 register_task(&wn->task);
78 sprintf(g->task.status, "%s", "writer node group");
82 unregister_task(&g->task);
84 struct writer_node *wn = &g->writer_nodes[--i];
85 unregister_task(&wn->task);
86 wn->writer->close(wn);
93 void wng_unregister(struct writer_node_group *g)
97 FOR_EACH_WRITER_NODE(i, g) {
98 struct writer_node *wn = &g->writer_nodes[i];
99 unregister_task(&wn->task);
101 unregister_task(&g->task);
105 void wng_close(struct writer_node_group *g)
111 PARA_NOTICE_LOG("closing wng with %d writer(s)\n", g->num_writers);
112 FOR_EACH_WRITER_NODE(i, g) {
113 struct writer_node *wn = &g->writer_nodes[i];
114 wn->writer->close(wn);
117 free(g->writer_nodes);
121 struct writer_node_group *wng_new(unsigned num_writers)
123 struct writer_node_group *g = para_calloc(sizeof(struct writer_node_group));
124 g->num_writers = num_writers;
125 g->writer_nodes = para_calloc(num_writers
126 * sizeof(struct writer_node));
127 g->written = para_calloc(num_writers * sizeof(size_t));
128 g->task.private_data = g;
129 g->task.post_select = wng_post_select;
134 void init_supported_writers(void)
139 writers[i].init(&writers[i]);
142 void *check_writer_arg(char *wa, int *writer_num)
146 *writer_num = -E_WRITE_COMMON_SYNTAX;
147 PARA_INFO_LOG("checking %s\n", wa);
149 const char *name = writer_names[i];
150 size_t len = strlen(name);
152 if (strlen(wa) < len)
154 if (strncmp(name, wa, len))
159 if (c && !writers[i].parse_config)
162 return writers[i].parse_config(c? wa + len + 1 : "");
164 PARA_ERROR_LOG("%s", "writer not found\n");
168 struct writer_node_group *setup_default_wng(void)
170 struct writer_node_group *wng = wng_new(1);
171 enum writer_enum default_writer;
173 if (NUM_SUPPORTED_WRITERS == 1)
174 default_writer = FILE_WRITE;
177 wng->writer_nodes[0].writer = &writers[default_writer];
178 sprintf(wng->writer_nodes[0].task.status, "%s",
179 writer_names[default_writer]);
180 PARA_INFO_LOG("using default writer: %s %p\n",
181 writer_names[default_writer], writers[default_writer].parse_config);
182 wng->writer_nodes[0].conf = writers[default_writer].parse_config("");