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
|
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "sinkinput.h"
#include "strbuf.h"
#include "sample-util.h"
#define CONVERT_BUFFER_LENGTH 4096
struct sink_input* sink_input_new(struct sink *s, const char *name, const struct pa_sample_spec *spec) {
struct sink_input *i;
struct resampler *resampler = NULL;
int r;
assert(s && spec);
if (!pa_sample_spec_equal(spec, &s->sample_spec))
if (!(resampler = resampler_new(spec, &s->sample_spec)))
return NULL;
i = malloc(sizeof(struct sink_input));
assert(i);
i->name = name ? strdup(name) : NULL;
i->sink = s;
i->sample_spec = *spec;
i->peek = NULL;
i->drop = NULL;
i->kill = NULL;
i->get_latency = NULL;
i->userdata = NULL;
i->volume = VOLUME_NORM;
i->resampled_chunk.memblock = NULL;
i->resampled_chunk.index = i->resampled_chunk.length = 0;
i->resampler = resampler;
assert(s->core);
r = idxset_put(s->core->sink_inputs, i, &i->index);
assert(r == 0 && i->index != IDXSET_INVALID);
r = idxset_put(s->inputs, i, NULL);
assert(r == 0);
return i;
}
void sink_input_free(struct sink_input* i) {
assert(i);
assert(i->sink && i->sink->core);
idxset_remove_by_data(i->sink->core->sink_inputs, i, NULL);
idxset_remove_by_data(i->sink->inputs, i, NULL);
if (i->resampled_chunk.memblock)
memblock_unref(i->resampled_chunk.memblock);
if (i->resampler)
resampler_free(i->resampler);
free(i->name);
free(i);
}
void sink_input_kill(struct sink_input*i) {
assert(i);
if (i->kill)
i->kill(i);
}
char *sink_input_list_to_string(struct core *c) {
struct strbuf *s;
struct sink_input *i;
uint32_t index = IDXSET_INVALID;
assert(c);
s = strbuf_new();
assert(s);
strbuf_printf(s, "%u sink input(s) available.\n", idxset_ncontents(c->sink_inputs));
for (i = idxset_first(c->sink_inputs, &index); i; i = idxset_next(c->sink_inputs, &index)) {
assert(i->sink);
strbuf_printf(s, " index: %u, name: <%s>, sink: <%u>; volume: <0x%04x>, latency: <%u usec>\n",
i->index,
i->name,
i->sink->index,
(unsigned) i->volume,
sink_input_get_latency(i));
}
return strbuf_tostring_free(s);
}
uint32_t sink_input_get_latency(struct sink_input *i) {
uint32_t l = 0;
assert(i);
if (i->get_latency)
l += i->get_latency(i);
assert(i->sink);
l += sink_get_latency(i->sink);
return l;
}
int sink_input_peek(struct sink_input *i, struct memchunk *chunk) {
assert(i && chunk && i->peek && i->drop);
if (!i->resampler)
return i->peek(i, chunk);
if (!i->resampled_chunk.memblock) {
struct memchunk tchunk;
size_t l;
int ret;
if ((ret = i->peek(i, &tchunk)) < 0)
return ret;
l = resampler_request(i->resampler, CONVERT_BUFFER_LENGTH);
if (tchunk.length > l)
tchunk.length = l;
i->drop(i, tchunk.length);
resampler_run(i->resampler, &tchunk, &i->resampled_chunk);
memblock_unref(tchunk.memblock);
}
assert(i->resampled_chunk.memblock && i->resampled_chunk.length);
*chunk = i->resampled_chunk;
memblock_ref(i->resampled_chunk.memblock);
return 0;
}
void sink_input_drop(struct sink_input *i, size_t length) {
assert(i && length);
if (!i->resampler) {
i->drop(i, length);
return;
}
assert(i->resampled_chunk.memblock && i->resampled_chunk.length >= length);
i->resampled_chunk.index += length;
i->resampled_chunk.length -= length;
if (!i->resampled_chunk.length) {
memblock_unref(i->resampled_chunk.memblock);
i->resampled_chunk.memblock = NULL;
i->resampled_chunk.index = i->resampled_chunk.length = 0;
}
}
|
