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
|
/*
* Copyright (C) 2018 "IoT.bzh"
* Author Fulup Ar Foll <fulup@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#define _GNU_SOURCE // needed for vasprintf
#include "alsa-softmixer.h"
ALSA_PLUG_PROTO(rate);
PUBLIC AlsaPcmInfoT* AlsaCreateRate(CtlSourceT *source, const char* pcmName, AlsaPcmInfoT *pcmSlave, int open) {
snd_config_t *rateConfig, *slaveConfig, *elemConfig, *pcmConfig;
AlsaPcmInfoT *pcmPlug= calloc(1,sizeof(AlsaPcmInfoT));
pcmPlug->uid= strdup(pcmName);
pcmPlug->cardid=pcmPlug->uid;
int error=0;
// refresh global alsalib config and create PCM top config
snd_config_update();
error += snd_config_top(&rateConfig);
error += snd_config_set_id (rateConfig, pcmPlug->cardid);
error += snd_config_imake_string(&elemConfig, "type", "plug");
error += snd_config_add(rateConfig, elemConfig);
if (error) goto OnErrorExit;
error += snd_config_make_compound(&slaveConfig, "slave", 0);
error += snd_config_imake_string(&elemConfig, "pcm", pcmSlave->cardid);
if (pcmSlave->params.rate) {
error += snd_config_add(slaveConfig, elemConfig);
// *** error += snd_config_imake_integer(&elemConfig, "rate", pcmSlave->params.rate);
error += snd_config_imake_integer(&elemConfig, "rate", 48000);
}
error += snd_config_add(slaveConfig, elemConfig);
if (error) goto OnErrorExit;
// add leaf into config
error += snd_config_add(rateConfig, slaveConfig);
if (error) goto OnErrorExit;
error += snd_config_search(snd_config, "pcm", &pcmConfig);
error += snd_config_add(pcmConfig, rateConfig);
if (error) {
AFB_ApiError(source->api, "AlsaCreateRate: fail to add configRATE=%s", pcmPlug->cardid);
goto OnErrorExit;
}
if (open) error = _snd_pcm_rate_open(&pcmPlug->handle, pcmPlug->cardid, snd_config, rateConfig, SND_PCM_STREAM_PLAYBACK , SND_PCM_NONBLOCK);
if (error) {
AFB_ApiError(source->api, "AlsaCreateRate: fail to create Rate=%s Slave=%s Error=%s", pcmPlug->cardid, pcmSlave->cardid, snd_strerror(error));
goto OnErrorExit;
}
// Debug config & pcm
AlsaDumpCtlConfig (source, "plug-rate", pcmConfig, 1);
//AlsaDumpCtlConfig (source, "plug-rate", rateConfig, 1);
AFB_ApiNotice(source->api, "AlsaCreateRate: %s done\n", pcmPlug->cardid);
return pcmPlug;
OnErrorExit:
AlsaDumpCtlConfig(source, "plug-rate", rateConfig, 1);
AFB_ApiNotice(source->api, "AlsaCreateRate: OnErrorExit\n");
return NULL;
}
|
