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
|
/**
* @file pulse/recorder.c Pulseaudio sound driver - recorder
*
* Copyright (C) 2010 - 2016 Creytiv.com
*/
#include <pulse/pulseaudio.h>
#include <pulse/simple.h>
#include <pthread.h>
#include <re.h>
#include <rem.h>
#include <baresip.h>
#include "pulse.h"
struct ausrc_st {
const struct ausrc *as; /* inheritance */
pa_simple *s;
pthread_t thread;
bool run;
void *sampv;
size_t sampc;
size_t sampsz;
ausrc_read_h *rh;
void *arg;
};
static void ausrc_destructor(void *arg)
{
struct ausrc_st *st = arg;
/* Wait for termination of other thread */
if (st->run) {
debug("pulse: stopping record thread\n");
st->run = false;
(void)pthread_join(st->thread, NULL);
}
if (st->s)
pa_simple_free(st->s);
mem_deref(st->sampv);
}
static void *read_thread(void *arg)
{
struct ausrc_st *st = arg;
const size_t num_bytes = st->sampc * st->sampsz;
int ret, pa_error = 0;
while (st->run) {
ret = pa_simple_read(st->s, st->sampv, num_bytes, &pa_error);
if (ret < 0) {
warning("pulse: pa_simple_write error (%s)\n",
pa_strerror(pa_error));
continue;
}
st->rh(st->sampv, st->sampc, st->arg);
}
return NULL;
}
static int aufmt_to_pulse_format(enum aufmt fmt)
{
switch (fmt) {
case AUFMT_S16LE: return PA_SAMPLE_S16NE;
case AUFMT_FLOAT: return PA_SAMPLE_FLOAT32NE;
default: return 0;
}
}
int pulse_recorder_alloc(struct ausrc_st **stp, const struct ausrc *as,
struct media_ctx **ctx,
struct ausrc_prm *prm, const char *device,
ausrc_read_h *rh, ausrc_error_h *errh, void *arg)
{
struct ausrc_st *st;
pa_sample_spec ss;
pa_buffer_attr attr;
int pa_error;
int err;
(void)ctx;
(void)device;
(void)errh;
if (!stp || !as || !prm)
return EINVAL;
debug("pulse: opening recorder (%u Hz, %d channels, device '%s')\n",
prm->srate, prm->ch, device);
st = mem_zalloc(sizeof(*st), ausrc_destructor);
if (!st)
return ENOMEM;
st->as = as;
st->rh = rh;
st->arg = arg;
st->sampc = prm->srate * prm->ch * prm->ptime / 1000;
st->sampsz = aufmt_sample_size(prm->fmt);
st->sampv = mem_alloc(st->sampsz * st->sampc, NULL);
if (!st->sampv) {
err = ENOMEM;
goto out;
}
ss.format = aufmt_to_pulse_format(prm->fmt);
ss.channels = prm->ch;
ss.rate = prm->srate;
attr.maxlength = (uint32_t)-1;
attr.tlength = (uint32_t)-1;
attr.prebuf = (uint32_t)-1;
attr.minreq = (uint32_t)-1;
attr.fragsize = (uint32_t)pa_usec_to_bytes(prm->ptime * 1000, &ss);
st->s = pa_simple_new(NULL,
"Baresip",
PA_STREAM_RECORD,
str_isset(device) ? device : 0,
"VoIP Record",
&ss,
NULL,
&attr,
&pa_error);
if (!st->s) {
warning("pulse: could not connect to server (%s)\n",
pa_strerror(pa_error));
err = ENODEV;
goto out;
}
st->run = true;
err = pthread_create(&st->thread, NULL, read_thread, st);
if (err) {
st->run = false;
goto out;
}
debug("pulse: recording started\n");
out:
if (err)
mem_deref(st);
else
*stp = st;
return err;
}
|
