summaryrefslogtreecommitdiffstats
path: root/ahl-binding/role.cpp
blob: 1b60a40125be4a8a2922f520c794de2fd6ffbf5a (plain)
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/*
 * Copyright (C) 2018 "IoT.bzh"
 * Author Loïc Collignon <loic.collignon@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.
 */

#include "role.hpp"
#include "jsonc_utils.hpp"
#include "ahl-binding.hpp"

role_t::role_t(json_object* j)
{
    jcast(uid_, j, "uid");
    jcast(description_, j, "description");
    jcast(priority_, j, "priority");
    jcast(stream_, j, "stream");
    jcast_array(interrupts_, j, "interrupts");
    opened_ = false;
}

role_t& role_t::operator<<(json_object* j)
{
    jcast(uid_, j, "uid");
    jcast(description_, j, "description");
    jcast(priority_, j, "priority");
    jcast(stream_, j, "stream");
    jcast_array(interrupts_, j, "interrupts");
    return *this;
}

std::string role_t::uid() const
{
    return uid_;
}

std::string role_t::description() const
{
    return description_;
}

std::string role_t::hal() const
{
    return hal_;
}

std::string role_t::stream() const
{
    return stream_;
}

int role_t::priority() const
{
    return priority_;
}

std::string role_t::device_uri() const
{
    return device_uri_;
}

bool role_t::opened() const
{
    return opened_;
}

void role_t::uid(std::string v)
{
    uid_ = v;
}

void role_t::description(std::string v)
{
    description_ = v;
}

void role_t::hal(std::string v)
{
    hal_ = v;
}

void role_t::stream(std::string v)
{
    stream_ = v;
}

void role_t::priority(int v)
{
    priority_ = v;
}

void role_t::device_uri(std::string v)
{
    device_uri_ = v;
}

const std::vector<interrupt_t>& role_t::interrupts() const
{
    return interrupts_;
}

int role_t::apply_policy(afb_request* req)
{
    if(interrupts_.size())
    {
        const interrupt_t& i = interrupts_[0];
        /*if (i.type() == "mute")
        {
        }
        else if (i.type() == "continue")
        {
        }
        else if (i.type() == "cancel")
        {
        }
        else */if (i.type() == "ramp")
        {
            for(const auto& r: ahl_binding_t::instance().roles())
            {
                if (r.opened() && priority_ > r.priority())
                {
                    // { "ramp" : { "uid" : "ramp-slow", "volume" : 30 } }
                    json_object* arg = json_object_new_object();
                    json_object_object_add(arg, "ramp", i.args());
                    json_object_get(i.args());
                    json_object* result = nullptr;

                    AFB_DYNAPI_NOTICE(ahl_binding_t::instance().handle(),
                        "Call '%s'/'%s' '%s",
                        r.hal().c_str(), r.stream().c_str(), json_object_to_json_string(arg));

                    if(afb_dynapi_call_sync(ahl_binding_t::instance().handle(), r.hal().c_str(), r.stream().c_str(), arg, &result))
                    {
                        afb_request_fail(req, "Failed to call 'ramp' action on stream", nullptr);
                        return -1;
                    }
                    AFB_DYNAPI_NOTICE(ahl_binding_t::instance().handle(),
                        "POLICY: Applying a ramp to '%s' stream because '%s' is opened and have higher priority!",
                        r.stream().c_str(), stream_.c_str());
                }
            }
        }
        else
        {
            afb_request_fail(req, "Unkown interrupt uid!", nullptr);
            return -1;
        }
    }
    return 0;
}

void role_t::invoke(afb_request* req)
{
    json_object* arg = afb_request_json(req);
    if (arg == nullptr)
    {
        afb_request_fail(req, "No valid argument!", nullptr);
        return;
    }

    json_object* jaction;
    json_bool ret = json_object_object_get_ex(arg, "action", &jaction);
    if (!ret)
    {
        afb_request_fail(req, "No valid action!", nullptr);
        return;
    }

    std::string action = json_object_get_string(jaction);
    if (action.size() == 0)
    {
        afb_request_fail(req, "No valid action!", nullptr);
        return;
    }

         if (action == "open")      open(req, arg);
    else if (action == "close")     close(req, arg);
    else if (action == "volume")    volume(req, arg);
    else if (action == "interrupt") interrupt(req, arg);
    else if (action == "mute")      mute(req, arg);
    else if (action == "unmute")    unmute(req, arg);
    else afb_request_fail(req, "Unknown action!", nullptr);
}

void role_t::open(afb_request* r, json_object* o)
{
    if (opened_)
    {
        afb_request_fail(r, "Already opened!", nullptr);
        return;
    }

    if (!apply_policy(r))
    {
        afb_request_context_set(
            r,
            this,
            [](void* arg)
            {
                role_t * role = (role_t*) arg;
                afb_dynapi * api = ahl_binding_t::instance().handle();

                AFB_DYNAPI_NOTICE(api, "Released role %s\n", role->uid_.c_str());
                role->opened_ = false;

                // send a mute command to the HAL. We cannot reuse the do_mute function,
                // because in the context here, the afb_request is no longer valid.
                json_object* a = json_object_new_object();
                json_object_object_add(a, "mute", json_object_new_boolean(true));

                afb_dynapi_call(
                     api,
                     role->hal_.c_str(),
                     role->stream_.c_str(),
                     a,
                     NULL,
                     NULL);
            }
        );
        opened_ = true;

        json_object* result = json_object_new_object();
        json_object_object_add(result, "device_uri", json_object_new_string(device_uri_.c_str()));

        afb_request_success(r, result, nullptr);
    }
}

void role_t::close(afb_request* r, json_object* o)
{
    if (!opened_)
    {
        afb_request_success(r, nullptr, "Already closed!");
        return;
    }

    if(!afb_request_context_get(r))
    {
        afb_request_fail(r, "Stream is opened by another client!", nullptr);
        return;
    }

    opened_ = false;
    afb_request_success(r, nullptr, "Stream closed!");
}

void role_t::mute(afb_request * r, json_object* o) {
	do_mute(r, true);
}

void role_t::unmute(afb_request *r, json_object  *o) {
	do_mute(r, false);
}

void role_t::do_mute(afb_request * r, bool v) {

	json_object* a = json_object_new_object();
    json_object_object_add(a, "mute", json_object_new_boolean(v));
	afb_dynapi * api = ahl_binding_t::instance().handle();

    afb_dynapi_call(
        api,
        hal_.c_str(),
        stream_.c_str(),
        a,
        [](void* closure, int status, json_object* result, afb_dynapi* handle)
        {
            AFB_DYNAPI_DEBUG(handle, "Got the following answer: %s", json_object_to_json_string(result));
            afb_request* r = (afb_request*)closure;

            json_object_get(result);
            if (status) afb_request_fail(r, json_object_to_json_string(result), nullptr);
            else afb_request_success(r, result, nullptr);
            afb_request_unref(r);
        },
        afb_request_addref(r));
}

void role_t::volume(afb_request* r, json_object* o)
{
	afb_dynapi * api = ahl_binding_t::instance().handle();

    if(!afb_request_has_permission(r, "urn:AGL:permission::public:4a-audio-mixer"))
    {
        if (!opened_)
        {
            afb_request_fail(r, "You have to open the stream first!", nullptr);
            return;
        }

        if(!afb_request_context_get(r))
        {
            afb_request_fail(r, "Stream is opened by another client!", nullptr);
            return;
        }
    }
    else
    {
        AFB_DYNAPI_NOTICE(api, "Granted special audio-mixer permission to change volume");
    }

    json_object* value;
    json_bool ret = json_object_object_get_ex(o, "value", &value);
    if (!ret)
    {
        afb_request_fail(r, "No value given!", nullptr);
        return;
    }

    json_object_get(value);

    json_object* a = json_object_new_object();
    json_object_object_add(a, "volume", value);

    afb_dynapi_call(
        api,
        hal_.c_str(),
        stream_.c_str(),
        a,
        [](void* closure, int status, json_object* result, afb_dynapi* handle)
        {
            AFB_DYNAPI_DEBUG(handle, "Got the following answer: %s", json_object_to_json_string(result));
            afb_request* r = (afb_request*)closure;

            json_object_get(result);
            if (status) afb_request_fail(r, json_object_to_json_string(result), nullptr);
            else afb_request_success(r, result, nullptr);
            afb_request_unref(r);
        },
        afb_request_addref(r));
}

void role_t::interrupt(afb_request* r, json_object* o)
{
}