summaryrefslogtreecommitdiffstats
path: root/polyp/source.c
blob: 6e377b20e8c72752bc5e35e106908d50ed7a1191 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/* $Id$ */

/***
  This file is part of polypaudio.
 
  polypaudio is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published
  by the Free Software Foundation; either version 2 of the License,
  or (at your option) any later version.
 
  polypaudio is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public License
  along with polypaudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include "source.h"
#include "source-output.h"
#include "namereg.h"
#include "xmalloc.h"
#include "subscribe.h"
#include "log.h"

pa_source* pa_source_new(
    pa_core *core,
    const char *driver,
    const char *name,
    int fail,
    const pa_sample_spec *spec,
    const pa_channel_map *map) {
    
    pa_source *s;
    char st[256];
    int r;
    
    assert(core);
    assert(name);
    assert(*name);
    assert(spec);

    s = pa_xnew(pa_source, 1);

    if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
        pa_xfree(s);
        return NULL;
    }

    s->ref = 1;
    s->core = core;
    s->state = PA_SOURCE_RUNNING;
    s->name = pa_xstrdup(name);
    s->description = NULL;
    s->driver = pa_xstrdup(driver);
    s->owner = NULL;
    
    s->sample_spec = *spec;
    if (map)
        s->channel_map = *map;
    else
        pa_channel_map_init_auto(&s->channel_map, spec->channels);

    s->outputs = pa_idxset_new(NULL, NULL);
    s->monitor_of = NULL;

    s->get_latency = NULL;
    s->notify = NULL;
    s->userdata = NULL;

    r = pa_idxset_put(core->sources, s, &s->index);
    assert(s->index != PA_IDXSET_INVALID && r >= 0);

    pa_sample_spec_snprint(st, sizeof(st), spec);
    pa_log_info(__FILE__": created %u \"%s\" with sample spec \"%s\"\n", s->index, s->name, st); 

    pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
    
    return s;
}

void pa_source_disconnect(pa_source *s) {
    pa_source_output *o, *j = NULL;
    
    assert(s);
    assert(s->state == PA_SOURCE_RUNNING);

    pa_namereg_unregister(s->core, s->name);
    
    while ((o = pa_idxset_first(s->outputs, NULL))) {
        assert(o != j);
        pa_source_output_kill(o);
        j = o;
    }

    pa_idxset_remove_by_data(s->core->sources, s, NULL);

    s->get_latency = NULL;
    s->notify = NULL;
    
    s->state = PA_SOURCE_DISCONNECTED;
    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
}

static void source_free(pa_source *s) {
    assert(s);
    assert(!s->ref);
    
    if (s->state != PA_SOURCE_DISCONNECTED)
        pa_source_disconnect(s);
    
    pa_log_info(__FILE__": freed %u \"%s\"\n", s->index, s->name); 

    pa_idxset_free(s->outputs, NULL, NULL);

    pa_xfree(s->name);
    pa_xfree(s->description);
    pa_xfree(s->driver);
    pa_xfree(s);
}

void pa_source_unref(pa_source *s) {
    assert(s);
    assert(s->ref >= 1);

    if (!(--s->ref))
        source_free(s);
}

pa_source* pa_source_ref(pa_source *s) {
    assert(s);
    assert(s->ref >= 1);
    
    s->ref++;
    return s;
}

void pa_source_notify(pa_source*s) {
    assert(s);
    assert(s->ref >= 1);

    if (s->notify)
        s->notify(s);
}

static int do_post(void *p, PA_GCC_UNUSED uint32_t idx, int *del, void*userdata) {
    pa_source_output *o = p;
    const pa_memchunk *chunk = userdata;
    
    assert(o);
    assert(chunk);

    pa_source_output_push(o, chunk);
    return 0;
}

void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
    assert(s);
    assert(s->ref >= 1);
    assert(chunk);

    pa_source_ref(s);
    pa_idxset_foreach(s->outputs, do_post, (void*) chunk);
    pa_source_unref(s);
}

void pa_source_set_owner(pa_source *s, pa_module *m) {
    assert(s);
    assert(s->ref >= 1);
    
    s->owner = m;
}

pa_usec_t pa_source_get_latency(pa_source *s) {
    assert(s);
    assert(s->ref >= 1);

    if (!s->get_latency)
        return 0;

    return s->get_latency(s);
}