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
|
/*
* 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"
#include <string.h>
// Fulup need to be cleanup with new controller version
extern Lua2cWrapperT Lua2cWrap;
STATIC int ProcessOneStream(CtlSourceT *source, json_object *streamJ, AlsaSndStreamT *stream) {
int error;
const char*format=NULL;
error = wrap_json_unpack(streamJ, "{ss,ss,s?i,s?b,s?i,s?i,s?i !}", "uid", &stream->uid, "zone", &stream->zone, "volume", &stream->volume, "mute", stream->mute
, "rate", &stream->params.rate, "format", &format, "access", &stream->params.access);
if (error) {
AFB_ApiNotice(source->api, "ProcessOneStream missing 'uid|zone|volume|rate|mute' stream=%s", json_object_get_string(streamJ));
goto OnErrorExit;
}
if (!format) stream->params.format=SND_PCM_FORMAT_UNKNOWN;
else if (!strcasecmp (format, "S16_LE")) stream->params.format=SND_PCM_FORMAT_S16_LE;
else if (!strcasecmp (format, "S16_BE")) stream->params.format=SND_PCM_FORMAT_S16_BE;
else if (!strcasecmp (format, "U16_LE")) stream->params.format=SND_PCM_FORMAT_U16_LE;
else if (!strcasecmp (format, "U16_BE")) stream->params.format=SND_PCM_FORMAT_U16_BE;
else if (!strcasecmp (format, "S32_LE")) stream->params.format=SND_PCM_FORMAT_S32_LE;
else if (!strcasecmp (format, "S32_BE")) stream->params.format=SND_PCM_FORMAT_S32_BE;
else if (!strcasecmp (format, "U32_LE")) stream->params.format=SND_PCM_FORMAT_U32_LE;
else if (!strcasecmp (format, "U32_BE")) stream->params.format=SND_PCM_FORMAT_U32_BE;
else if (!strcasecmp (format, "S24_LE")) stream->params.format=SND_PCM_FORMAT_S24_LE;
else if (!strcasecmp (format, "S24_BE")) stream->params.format=SND_PCM_FORMAT_S24_BE;
else if (!strcasecmp (format, "U24_LE")) stream->params.format=SND_PCM_FORMAT_U24_LE;
else if (!strcasecmp (format, "U24_BE")) stream->params.format=SND_PCM_FORMAT_U24_BE;
else if (!strcasecmp (format, "S8")) stream->params.format=SND_PCM_FORMAT_S8;
else if (!strcasecmp (format, "U8")) stream->params.format=SND_PCM_FORMAT_U8;
else if (!strcasecmp (format, "FLOAT_LE")) stream->params.format=SND_PCM_FORMAT_FLOAT_LE;
else if (!strcasecmp (format, "FLOAT_BE")) stream->params.format=SND_PCM_FORMAT_FLOAT_LE;
else {
AFB_ApiNotice(source->api, "ProcessOneStream unsupported format 'uid|zone|volume|rate|mute' stream=%s", json_object_get_string(streamJ));
goto OnErrorExit;
}
if(!stream->params.rate) stream->params.rate=ALSA_DEFAULT_PCM_RATE;
// make sure remain valid even when json object is removed
stream->uid = strdup(stream->uid);
stream->zone = strdup(stream->zone);
return 0;
OnErrorExit:
return -1;
}
CTLP_LUA2C(snd_streams, source, argsJ, responseJ) {
AlsaSndStreamT *sndStream;
int error;
size_t count;
// assert static/global softmixer handle get requited info
AlsaSndLoopT *ctlLoop = Softmixer->loopCtl;
if (!ctlLoop) {
AFB_ApiError(source->api, "L2C:sndstreams: No Loop found [should register snd_loop first]");
goto OnErrorExit;
}
switch (json_object_get_type(argsJ)) {
case json_type_object:
count = 1;
sndStream = calloc(count + 1, sizeof (AlsaSndStreamT));
error = ProcessOneStream(source, argsJ, &sndStream[0]);
if (error) {
AFB_ApiError(source->api, "L2C:sndstreams: invalid stream= %s", json_object_get_string(argsJ));
goto OnErrorExit;
}
break;
case json_type_array:
count = json_object_array_length(argsJ);
sndStream = calloc(count + 1, sizeof (AlsaSndStreamT));
for (int idx = 0; idx < count; idx++) {
json_object *sndStreamJ = json_object_array_get_idx(argsJ, idx);
error = ProcessOneStream(source, sndStreamJ, &sndStream[idx]);
if (error) {
AFB_ApiError(source->api, "sndstreams: invalid stream= %s", json_object_get_string(sndStreamJ));
goto OnErrorExit;
}
}
break;
default:
AFB_ApiError(source->api, "L2C:sndstreams: invalid argsJ= %s", json_object_get_string(argsJ));
goto OnErrorExit;
}
// return stream data to application as a json array
*responseJ = json_object_new_array();
for (int idx = 0; sndStream[idx].uid != NULL; idx++) {
json_object *streamJ;
// Search for a free loop capture device
AFB_ApiNotice(source->api, "L2C:sndstreams stream=%s Start", (char*)sndStream[idx].uid);
ctlLoop->scount--;
if (ctlLoop->scount < 0) {
AFB_ApiError(source->api, "L2C:sndstreams no more subdev avaliable in loopback=%s", ctlLoop->uid);
goto OnErrorExit;
}
// Retrieve subdev loop device and open corresponding pcm
AlsaPcmInfoT *playbackDev = &ctlLoop->subdevs[ctlLoop->scount];
// capture use the same card/subdev as playback with a different device
playbackDev->device= ctlLoop->capture;
AlsaPcmInfoT *captureDev = AlsaByPathOpenPcm(source, playbackDev, SND_PCM_STREAM_CAPTURE);
if (!captureDev) goto OnErrorExit;
AlsaPcmInfoT *streamPcm = AlsaCreateStream(source, &sndStream[idx], captureDev);
if (!streamPcm) {
AFB_ApiError(source->api, "L2C:sndstreams fail to create stream=%s", (char*) sndStream[idx].uid);
goto OnErrorExit;
}
// capture stream inherit channel from targeted zone
captureDev->ccount = streamPcm->ccount;
sndStream[idx].params.channels=streamPcm->ccount;
// start stream pcm copy
error = AlsaPcmCopy(source, captureDev, streamPcm, &sndStream[idx].params);
if (error) goto OnErrorExit;
// Registration to event should be done after pcm_start
if (captureDev->numid) {
error = AlsaCtlRegister(source, captureDev, captureDev->numid);
if (error) goto OnErrorExit;
}
// prepare response for application
playbackDev->device= ctlLoop->playback;
error = AlsaByPathDevid(source, playbackDev);
wrap_json_pack(&streamJ, "{ss ss si}", "uid", sndStream[idx].uid, "alsa", playbackDev->cardid, "numid", captureDev->numid);
json_object_array_add(*responseJ,streamJ);
// Debug Alsa Config
//AlsaDumpElemConfig (source, "\n\nAlsa_Config\n------------\n", "pcm");
//AlsaDumpPcmInfo(source, "\n\nPcm_config\n-----------\n", streamPcm->handle);
AFB_ApiNotice(source->api, "L2C:sndstreams stream=%s OK\n", (char*) sndStream[idx].uid);
}
return 0;
OnErrorExit:
return -1;
}
|
