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
|
/*
* Copyright (C) 2017, Microchip Technology Inc. and its subsidiaries.
* Author Tobias Jahnke
*
* 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
#include "hal-interface.h"
#include "audio-interface.h"
#include "wrap-json.h"
#include "string.h"
static int master_volume;
static json_bool master_switch;
static int pcm_volume[6];
void unicens_master_vol_cb(halCtlsEnumT tag, alsaHalCtlMapT *control, void* handle, json_object *j_obj) {
const char *j_str = json_object_to_json_string(j_obj);
if (wrap_json_unpack(j_obj, "[i!]", &master_volume) == 0) {
AFB_NOTICE("master_volume: %s, value=%d", j_str, master_volume);
}
else {
AFB_NOTICE("master_volume: INVALID STRING %s", j_str);
}
}
void unicens_master_switch_cb(halCtlsEnumT tag, alsaHalCtlMapT *control, void* handle, json_object *j_obj) {
const char *j_str = json_object_to_json_string(j_obj);
if (wrap_json_unpack(j_obj, "[b!]", &master_switch) == 0) {
AFB_NOTICE("master_switch: %s, value=%d", j_str, master_switch);
}
else {
AFB_NOTICE("master_switch: INVALID STRING %s", j_str);
}
}
void unicens_pcm_vol_cb(halCtlsEnumT tag, alsaHalCtlMapT *control, void* handle, json_object *j_obj) {
const char *j_str = json_object_to_json_string(j_obj);
if (wrap_json_unpack(j_obj, "[iiiiii!]", &pcm_volume[0], &pcm_volume[1], &pcm_volume[2], &pcm_volume[3],
&pcm_volume[4], &pcm_volume[5]) == 0) {
AFB_NOTICE("pcm_vol: %s", j_str);
}
else {
AFB_NOTICE("pcm_vol: INVALID STRING %s", j_str);
}
}
/* declare ALSA mixer controls */
STATIC alsaHalMapT alsaHalMap[]= {
{ .tag=Master_Playback_Volume, .cb={.callback=unicens_master_vol_cb, .handle=&master_volume}, .info="Sets master playback volume",
.ctl={.numid=1, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .value=50, .name="Master Playback Volume"}
},
/*{ .tag=Master_OnOff_Switch, .cb={.callback=unicens_master_switch_cb, .handle=&master_switch}, .info="Sets master playback switch",
.ctl={.numid=2, .type=SND_CTL_ELEM_TYPE_BOOLEAN, .count=1, .minval=0, .maxval=1, .step=1, .value=1, .name="Master Playback Switch"}
},*/
{ .tag=PCM_Playback_Volume, .cb={.callback=unicens_pcm_vol_cb, .handle=&pcm_volume}, .info="Sets PCM playback volume",
.ctl={.numid=3, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=6, .minval=0, .maxval=100, .step=1, .value=100, .name="PCM Playback Volume"}
},
{ .tag=EndHalCrlTag} /* marker for end of the array */
} ;
/* HAL sound card mapping info */
STATIC alsaHalSndCardT alsaHalSndCard = {
.name = "Microchip MOST:1", /* WARNING: name MUST match with 'aplay -l' */
.info = "HAL for MICROCHIP MOST sound card controlled by UNICENS binding",
.ctls = alsaHalMap,
.volumeCB = NULL, /* use default volume normalization function */
};
STATIC int unicens_start_binding() {
json_object *j_response, *j_query = NULL;
int err;
/* Build an empty JSON object */
err = wrap_json_pack(&j_query, "{}");
if (err) {
AFB_ERROR("Failed to create subscribe json object");
goto OnErrorExit;
}
err = afb_service_call_sync("UNICENS", "subscribe", j_query, &j_response);
if (err) {
AFB_ERROR("Fail subscribing to UNICENS events");
goto OnErrorExit;
}
else {
AFB_NOTICE("Subscribed to UNICENS events, res=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
json_object_put(j_query);
#if 0
/* Build JSON object to retrieve UNICENS configuration */
err = wrap_json_pack(&j_query, "{}");
if (err) {
AFB_ERROR("Failed to create listconfig json object");
goto OnErrorExit;
}
err = afb_service_call_sync("UNICENS", "listconfig", j_query, &j_response);
if (err) {
AFB_ERROR("Failed to call listconfig");
goto OnErrorExit;
}
else {
AFB_NOTICE("UNICENS listconfig result, res=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
json_object_put(j_query);
#endif
/* Build JSON object to initialize UNICENS */
err = wrap_json_pack(&j_query, "{s:s}", "filename", "/home/agluser/DEVELOPMENT/AGL/BINDING/unicens2-binding/data/config_multichannel_audio_kit.xml");
if (err) {
AFB_ERROR("Failed to create initialize json object");
goto OnErrorExit;
}
err = afb_service_call_sync("UNICENS", "initialise", j_query, &j_response);
if (err) {
AFB_ERROR("Failed to initialize UNICENS");
goto OnErrorExit;
}
else {
AFB_NOTICE("Initialized UNICENS, res=%s", json_object_to_json_string(j_response));
json_object_put(j_response);
}
json_object_put(j_query);
j_query = NULL;
OnErrorExit:
if (j_query)
json_object_put(j_query);
return NULL;
}
STATIC int unicens_service_init() {
int err;
AFB_NOTICE("Initializing HAL-MOST-UNICENS-BINDING");
err = halServiceInit(afbBindingV2.api, &alsaHalSndCard);
if (err) {
AFB_ERROR("Cannot initialize hal-most-unicens binding.");
goto OnErrorExit;
}
err= afb_daemon_require_api("UNICENS", 1);
if (err) {
AFB_ERROR("UNICENS is missing or not initialized");
goto OnErrorExit;
}
unicens_start_binding();
OnErrorExit:
AFB_NOTICE("Initializing HAL-MOST-UNICENS-BINDING done..");
return err;
}
// This receive all event this binding subscribe to
PUBLIC void unicens_event_cb(const char *evtname, json_object *j_event) {
if (strncmp(evtname, "alsacore/", 9) == 0) {
halServiceEvent(evtname, j_event);
return;
}
if (strncmp(evtname, "UNICENS/", 8) == 0) {
AFB_NOTICE("unicens_event_cb: evtname=%s [msg=%s]", evtname, json_object_get_string(j_event));
return;
}
AFB_NOTICE("unicens_event_cb: UNHANDLED EVENT, evtname=%s [msg=%s]", evtname, json_object_get_string(j_event));
}
/* API prefix should be unique for each snd card */
PUBLIC const struct afb_binding_v2 afbBindingV2 = {
.api = "hal-most-unicens",
.init = unicens_service_init,
.verbs = halServiceApi,
.onevent = unicens_event_cb,
};
|
