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
|
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include "sink.h"
#include "inputstream.h"
struct sink* sink_new(struct core *core, const char *name, const struct sample_spec *spec) {
struct sink *s;
char *n = NULL;
int r;
assert(core && spec);
s = malloc(sizeof(struct sink));
assert(s);
s->name = name ? strdup(name) : NULL;
r = idxset_put(core->sinks, s, &s->index);
assert(s->index != IDXSET_INVALID && r >= 0);
s->core = core;
s->sample_spec = *spec;
s->inputs = idxset_new(NULL, NULL);
if (name) {
n = malloc(strlen(name)+9);
sprintf(n, "%s_monitor", name);
}
s->monitor_source = source_new(core, n, spec);
free(n);
s->volume = 0xFF;
s->notify = NULL;
s->notify_userdata = NULL;
fprintf(stderr, "sink: created %u \"%s\".\n", s->index, s->name);
return s;
}
void sink_free(struct sink *s) {
struct sink_input *i, *j = NULL;
assert(s);
while ((i = idxset_first(s->inputs, NULL))) {
assert(i != j && i->kill);
i->kill(i);
j = i;
}
idxset_free(s->inputs, NULL, NULL);
idxset_remove_by_data(s->core->sinks, s, NULL);
source_free(s->monitor_source);
fprintf(stderr, "sink: freed %u \"%s\"\n", s->index, s->name);
free(s->name);
free(s);
}
void sink_notify(struct sink*s) {
assert(s);
if (s->notify)
s->notify(s, s->notify_userdata);
}
void sink_set_notify_callback(struct sink *s, void (*notify_callback)(struct sink*sink, void *userdata), void *userdata) {
assert(s && notify_callback);
s->notify = notify_callback;
s->notify_userdata = userdata;
}
static unsigned fill_mix_info(struct sink *s, struct mix_info *info, unsigned maxinfo) {
uint32_t index = IDXSET_ANY;
struct sink_input *i;
unsigned n;
assert(s && info);
while (maxinfo > 0 && i = idxset_rrobin(s->inputs, &index)) {
assert(i->peek);
if (i->peek(i, &info->chunk, &info->volume) < 0)
continue;
assert(info->chunk.memblock && info->chunk.memblock->data && info->chunk.length);
info->userdata = i;
info++;
maxinfo--;
n++;
}
return n;
}
static void inputs_drop(struct sink *s, struct mix_info *info, unsigned maxinfo, size_t length) {
assert(s && info);
for (; maxinfo > 0; maxinfo--, info++) {
struct sink_input *i = info->userdata;
assert(i && info->chunk.memblock);
memblock_unref(info->chunk.memblock);
assert(i->drop);
i->drop(i, length);
}
}
int sink_render(struct sink*s, size_t length, struct memchunk *result) {
struct mix_info info[MAX_MIX_CHANNELS];
unsigned n;
size_t l;
assert(s && length && result);
n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
if (n <= 0)
return -1;
if (n == 1) {
struct sink_info *i = info[0].userdata;
assert(i && b);
*result = info[0].chunk;
memblock_ref(result->memblock);
if (result->length > length)
result->length = length;
l = result->length;
} else {
result->memblock = memblock_new(length);
assert(result->memblock);
result->length = l = mix_chunks(info, n, result->memblock->data, length, &s->sample_spec);
result->index = 0;
assert(l);
}
inputs_drop(s, info, n, l);
return 0;
}
int sink_render_into(struct sink*s, struct memblock *target, struct memchunk *result) {
struct mix_info info[MAX_MIX_CHANNELS];
unsigned n;
size_t l;
assert(s && target && target->length && target->data && result);
n = fill_mix_info(s, info, MAX_MIX_CHANNELS);
if (n <= 0)
return -1;
if (n == 1) {
struct sink_info *i = info[0].userdata;
assert(i && b);
l = target->length;
if (l > info[0].chunk.length)
l = info[0].chunk.length;
result->memblock = target;
memcpy(target->data, info[0].chunk.memblock->data + info[0].chunk.index, l);
result->length = target->length = l;
result->index = 0;
if (result->length > length)
result->length = length;
l = result->length;
} else {
result->memblock = target;
result->length = l = mix_chunks(info, n, target->data, target->length, &s->sample_spec);
result->index = 0;
assert(l);
}
inputs_drop(s, info, n, l);
return 0;
}
|
