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
196
197
198
199
200
201
202
203
204
|
/**
* @file opensles/recorder.c OpenSLES audio driver -- recording
*
* Copyright (C) 2010 Creytiv.com
*/
#include <re.h>
#include <baresip.h>
#include <string.h>
#include <SLES/OpenSLES.h>
#include "SLES/OpenSLES_Android.h"
#include "opensles.h"
#define N_REC_QUEUE_BUFFERS 2
#define PTIME 10
struct ausrc_st {
const struct ausrc *as; /* inheritance */
int16_t *sampv[N_REC_QUEUE_BUFFERS];
size_t sampc;
uint8_t bufferId;
ausrc_read_h *rh;
void *arg;
SLObjectItf recObject;
SLRecordItf recRecord;
SLAndroidSimpleBufferQueueItf recBufferQueue;
};
static void ausrc_destructor(void *arg)
{
struct ausrc_st *st = arg;
if (st->recObject != NULL) {
SLuint32 state;
if (SL_OBJECT_STATE_UNREALIZED !=
(*st->recObject)->GetState(st->recObject,&state)) {
(*st->recObject)->Destroy(st->recObject);
}
}
st->bufferId = 0;
for (int i=0; i<N_REC_QUEUE_BUFFERS; i++) {
mem_deref(st->sampv[i]);
}
}
static void bqRecorderCallback(SLAndroidSimpleBufferQueueItf bq, void *context)
{
struct ausrc_st *st = context;
(void)bq;
st->rh(st->sampv[st->bufferId], st->sampc, st->arg);
st->bufferId = ( st->bufferId + 1 ) % N_REC_QUEUE_BUFFERS;
memset(st->sampv[st->bufferId], 0, st->sampc * 2);
(*st->recBufferQueue)->Enqueue(st->recBufferQueue,
st->sampv[st->bufferId],
st->sampc * 2);
}
static int createAudioRecorder(struct ausrc_st *st, struct ausrc_prm *prm)
{
SLDataLocator_IODevice loc_dev = {SL_DATALOCATOR_IODEVICE,
SL_IODEVICE_AUDIOINPUT,
SL_DEFAULTDEVICEID_AUDIOINPUT,
NULL};
SLDataSource audioSrc = {&loc_dev, NULL};
SLDataLocator_AndroidSimpleBufferQueue loc_bq = {
SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 2
};
SLDataFormat_PCM format_pcm = {SL_DATAFORMAT_PCM, prm->ch,
prm->srate * 1000,
SL_PCMSAMPLEFORMAT_FIXED_16,
SL_PCMSAMPLEFORMAT_FIXED_16,
SL_SPEAKER_FRONT_CENTER,
SL_BYTEORDER_LITTLEENDIAN};
SLDataSink audioSnk = {&loc_bq, &format_pcm};
const SLInterfaceID id[1] = {SL_IID_ANDROIDSIMPLEBUFFERQUEUE};
const SLboolean req[1] = {SL_BOOLEAN_TRUE};
SLresult r;
r = (*engineEngine)->CreateAudioRecorder(engineEngine,
&st->recObject,
&audioSrc,
&audioSnk, 1, id, req);
if (SL_RESULT_SUCCESS != r) {
warning("opensles: CreateAudioRecorder failed: r = %d\n", r);
return ENODEV;
}
r = (*st->recObject)->Realize(st->recObject, SL_BOOLEAN_FALSE);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
r = (*st->recObject)->GetInterface(st->recObject, SL_IID_RECORD,
&st->recRecord);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
r = (*st->recObject)->GetInterface(st->recObject,
SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
&st->recBufferQueue);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
r = (*st->recBufferQueue)->RegisterCallback(st->recBufferQueue,
bqRecorderCallback,
st);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
return 0;
}
static int startRecording(struct ausrc_st *st)
{
SLresult r;
(*st->recRecord)->SetRecordState(st->recRecord,
SL_RECORDSTATE_STOPPED);
(*st->recBufferQueue)->Clear(st->recBufferQueue);
st->bufferId = 0;
r = (*st->recBufferQueue)->Enqueue(st->recBufferQueue,
st->sampv[st->bufferId],
st->sampc * 2);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
r = (*st->recRecord)->SetRecordState(st->recRecord,
SL_RECORDSTATE_RECORDING);
if (SL_RESULT_SUCCESS != r)
return ENODEV;
return 0;
}
int opensles_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;
int err;
(void)ctx;
(void)device;
(void)errh;
if (!stp || !as || !prm || !rh)
return EINVAL;
debug("opensles: opening recorder %uHz, %uchannels\n",
prm->srate, prm->ch);
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 * PTIME / 1000;
st->bufferId = 0;
for (int i=0; i<N_REC_QUEUE_BUFFERS; i++) {
st->sampv[i] = mem_zalloc(2 * st->sampc, NULL);
if (!st->sampv[i]) {
err = ENOMEM;
goto out;
}
}
err = createAudioRecorder(st, prm);
if (err)
goto out;
err = startRecording(st);
if (err) {
warning("opensles: failed to start recorder\n");
goto out;
}
out:
if (err)
mem_deref(st);
else
*stp = st;
return err;
}
|
