summaryrefslogtreecommitdiffstats
path: root/src/ahl-config.c
blob: aa55b28d179ffdeba9248b93290805d76fc1f8cb (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
/*
 * Copyright (C) 2017 "Audiokinetic Inc"
 * Author Francois Thibault <fthibault@audiokinetic.com>
 *
 * 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 <stdio.h>
#include <string.h>
#include <json-c/json.h>
#include "wrap-json.h"

#include "ahl-binding.h"

extern AHLCtxT g_AHLCtx;

int ParseHLBConfig() {
    char * versionStr = NULL;
    json_object * jAudioRoles = NULL;
    json_object * jHALList = NULL;
    char * policyModule = NULL;
    
    // TODO: This should be retrieve from binding startup arguments
    char configfile_path[256];
    sprintf(configfile_path, "%s/opt/config/ahl-config.json", getenv("HOME")); 
    AFB_INFO("High-level config file -> %s\n", configfile_path);

    // Open configuration file
    json_object *config_JFile=json_object_from_file(configfile_path);
    if(config_JFile == NULL)
    {
        AFB_ERROR("Error: Can't open configuration file -> %s",configfile_path);
        return 1;
    }

    int err = wrap_json_unpack(config_JFile, "{s:s,s:s,s:o,s:o}", "version", &versionStr,"policy_module", &policyModule,"audio_roles",&jAudioRoles,"hal_list",&jHALList);
    if (err) {
        AFB_ERROR("Invalid configuration file -> %s", configfile_path);
        return 1;
    }
    AFB_INFO("Version: %s", versionStr);
    AFB_INFO("Policy module: %s", policyModule);

    int iHALListLength = json_object_array_length(jHALList);
    int iNumberOfRoles = json_object_array_length(jAudioRoles);
    g_AHLCtx.policyCtx.iNumberRoles = iNumberOfRoles;

    // Dynamically allocated based on number or roles found
    g_AHLCtx.pHALList = g_array_sized_new(FALSE, TRUE, sizeof(GString), iHALListLength);
    g_AHLCtx.policyCtx.pRolePriority = g_hash_table_new(g_str_hash, g_str_equal);
    g_AHLCtx.policyCtx.pAudioRoles = g_array_sized_new(FALSE, TRUE, sizeof(GString), iNumberOfRoles);
    g_AHLCtx.policyCtx.pInterruptBehavior = g_array_sized_new(FALSE, TRUE, sizeof(int), iNumberOfRoles);
    g_AHLCtx.policyCtx.pSourceEndpoints = g_ptr_array_sized_new(iNumberOfRoles);
    g_AHLCtx.policyCtx.pSinkEndpoints = g_ptr_array_sized_new(iNumberOfRoles);
    g_AHLCtx.policyCtx.pEventList = g_ptr_array_sized_new(iNumberOfRoles);
        
    for (int i = 0; i < iHALListLength; i++)
    {
        char * pHAL = NULL;
        json_object * jHAL = json_object_array_get_idx(jHALList,i);
        pHAL = (char *)json_object_get_string(jHAL);
        GString * gHALName = g_string_new( pHAL );
        g_array_append_val( g_AHLCtx.pHALList, *gHALName );

        // Set dependency on HAL
        err = afb_daemon_require_api_v2(pHAL,1) ;
        if( err != 0 )
        {
            AFB_ERROR("Audio high level API could not set dependenvy on API: %s",pHAL);
            return 1;
        }
    }

    for (int i = 0; i < iNumberOfRoles; i++)
    {
        int priority = 0;
        json_object * jAudioRole = json_object_array_get_idx(jAudioRoles,i);
        json_object * jOutputDevices = NULL;
        json_object * jInputDevices = NULL;
        json_object * jEvents = NULL;
        char * pRoleName = NULL;
        char * pInteruptBehavior = NULL;

        int iNumOutDevices = 0;
        int iNumInDevices = 0;
        int iNumEvents = 0;

        err = wrap_json_unpack(jAudioRole, "{s:s,s:i,s:s,s?o,s?o,s?o}", 
                                    "name", &pRoleName,
                                    "priority",&priority,
                                    "interupt_behavior",&pInteruptBehavior,
                                    "output",&jOutputDevices,
                                    "input",&jInputDevices,
                                    "events",&jEvents
                                    );
        if (err) {
            AFB_ERROR("Invalid audio role configuration : %s", json_object_to_json_string(jAudioRole));
            return 1;
        }
        
        if (jOutputDevices)
            iNumOutDevices = json_object_array_length(jOutputDevices);
        if (jInputDevices)
            iNumInDevices = json_object_array_length(jInputDevices);
        if (jEvents)
            iNumEvents = json_object_array_length(jEvents);

        GString * gRoleName = g_string_new( pRoleName );
        g_array_append_val( g_AHLCtx.policyCtx.pAudioRoles, *gRoleName );
        g_hash_table_insert(g_AHLCtx.policyCtx.pRolePriority, pRoleName, GINT_TO_POINTER(priority));

        // Map interupt behavior string to enum value
        InterruptedBehaviorT interuptBehavior = AHL_INTERRUPTEDBEHAVIOR_CONTINUE; 
        if ( strcasecmp(pInteruptBehavior,AHL_INTERRUPTEDBEHAVIOR_CONTINUE_STR) == 0 ) {
            interuptBehavior = AHL_INTERRUPTEDBEHAVIOR_CONTINUE;
        }
        else if ( strcasecmp(pInteruptBehavior,AHL_INTERRUPTEDBEHAVIOR_CANCEL_STR) == 0 ) {
            interuptBehavior = AHL_INTERRUPTEDBEHAVIOR_CANCEL;
        }
        else if ( strcasecmp(pInteruptBehavior,AHL_INTERRUPTEDBEHAVIOR_PAUSE_STR) == 0 ) {
            interuptBehavior = AHL_INTERRUPTEDBEHAVIOR_PAUSE;
        }
        else {
            AFB_ERROR("Unknown interrupt behavior : %s", pInteruptBehavior);
            return 1;
        }
        g_array_append_val(g_AHLCtx.policyCtx.pInterruptBehavior, interuptBehavior);

        // Sources
        GArray * pRoleSourceDeviceArray = g_array_new(FALSE, TRUE, sizeof(EndpointInfoT));
        g_ptr_array_add(g_AHLCtx.policyCtx.pSourceEndpoints,pRoleSourceDeviceArray);
        if (iNumInDevices) {          
            err = EnumerateSources(jInputDevices,i,pRoleName);
            if (err) {
                AFB_ERROR("Invalid input devices : %s", json_object_to_json_string(jInputDevices));
                return 1;
            }
        }
        // Sinks
        GArray * pRoleSinkDeviceArray = g_array_new(FALSE, TRUE, sizeof(EndpointInfoT));
        g_ptr_array_add(g_AHLCtx.policyCtx.pSinkEndpoints,pRoleSinkDeviceArray);
        if (iNumOutDevices) { 
            err = EnumerateSinks(jOutputDevices,i,pRoleName);
            if (err) {
                AFB_ERROR("Invalid output devices : %s", json_object_to_json_string(jOutputDevices));
                return 1;
            }
        }
        // Events
        GArray * pEventsArray = g_array_new(FALSE, TRUE, sizeof(GString));
        g_ptr_array_add(g_AHLCtx.policyCtx.pEventList,pEventsArray);
        // Parse and validate list of available events
        for (int i = 0; i < iNumEvents; i++)
        {
            json_object * jEvent = json_object_array_get_idx(jEvents,i);
            char * pEventName = (char *)json_object_get_string(jEvent);
            GString * gsEventName = g_string_new(pEventName);
            g_array_append_val(pEventsArray, *gsEventName);
        }
    }

    // Build lists of all device URI referenced in config file (input/output)    
    AFB_DEBUG ("Audio high-level - Parse high-level audio configuration done");
    return 0;
}