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/*
* Copyright (C) 2018, "IoT.bzh", Microchip Technology Inc. and its subsidiaries.
* Author Jonathan Aillet
* Author Tobias Jahnke
* Contrib Fulup Ar Foll
*
* 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 <stdbool.h>
#include <wrap-json.h>
#include <ctl-plugin.h>
#include "wrap_unicens.h"
#include "wrap_volume.h"
CTLP_CAPI_REGISTER("hal-unicens")
#define PCM_MAX_CHANNELS 6
AFB_ApiT unicensHalApiHandle;
static uint8_t initialized = 0;
// Call at initialisation time
CTLP_ONLOAD(plugin, callbacks)
{
AFB_ApiNotice(plugin->api, "Hal-Unicens Plugin Register: uid='%s' 'info='%s'", plugin->uid, plugin->info);
unicensHalApiHandle = plugin->api;
return 0;
}
CTLP_CAPI(MasterVol, source, argsJ, queryJ)
{
int master_volume;
json_object *valueJ;
if(! initialized) {
AFB_ApiWarning(source->api, "%s: Link to unicens binder is not initialized, can't set master volume, value=%s", __func__, json_object_get_string(queryJ));
return -1;
}
if(! json_object_is_type(queryJ, json_type_array) || json_object_array_length(queryJ) <= 0) {
AFB_ApiError(source->api, "%s: invalid json (should be a non empty json array) value=%s", __func__, json_object_get_string(queryJ));
return -2;
}
valueJ = json_object_array_get_idx(queryJ, 0);
if(! json_object_is_type(valueJ, json_type_int)) {
AFB_ApiError(source->api, "%s: invalid json (should be an array of int) value=%s", __func__, json_object_get_string(queryJ));
return -3;
}
master_volume = json_object_get_int(valueJ);
wrap_volume_master(source->api, master_volume);
return 0;
}
CTLP_CAPI(MasterSwitch, source, argsJ, queryJ)
{
json_bool master_switch;
json_object *valueJ;
if(! initialized) {
AFB_ApiWarning(source->api, "%s: Link to unicens binder is not initialized, can't set master switch, value=%s", __func__, json_object_get_string(queryJ));
return -1;
}
if(! json_object_is_type(queryJ, json_type_array) || json_object_array_length(queryJ) <= 0) {
AFB_ApiError(source->api, "%s: invalid json (should be a non empty json array) value=%s", __func__, json_object_get_string(queryJ));
return -2;
}
// In case if alsa doesn't return a proper json boolean
valueJ = json_object_array_get_idx(queryJ, 0);
switch(json_object_get_type(valueJ)) {
case json_type_boolean:
master_switch = json_object_get_boolean(valueJ);
break;
case json_type_int:
master_switch = json_object_get_int(valueJ);
break;
default:
AFB_ApiError(source->api, "%s: invalid json (should be an array of boolean/int) value=%s", __func__, json_object_get_string(queryJ));
return -3;
}
// TBD: implement pause action for Unicens
AFB_ApiWarning(source->api, "%s: Try to set master switch to %i, but function is not implemented", __func__, (int) master_switch);
return 0;
}
CTLP_CAPI(PCMVol, source, argsJ, queryJ)
{
int idx;
int pcm_volume[PCM_MAX_CHANNELS];
json_object *valueJ;
if(! initialized) {
AFB_ApiWarning(source->api, "%s: Link to unicens binder is not initialized, can't set PCM volume, value=%s", __func__, json_object_get_string(queryJ));
return -1;
}
if(! json_object_is_type(queryJ, json_type_array) || json_object_array_length(queryJ) <= 0) {
AFB_ApiError(source->api, "%s: invalid json (should be a non empty json array) value=%s", __func__, json_object_get_string(queryJ));
return -1;
}
for(idx = 0; idx < json_object_array_length(queryJ); idx++) {
valueJ = json_object_array_get_idx(queryJ, idx);
if(! json_object_is_type(valueJ, json_type_int)) {
AFB_ApiError(source->api, "%s: invalid json (should be an array of int) value=%s", __func__, json_object_get_string(queryJ));
return -2;
}
pcm_volume[idx] = json_object_get_int(valueJ);
}
// If control only has one value, then replicate the first value
for(idx = idx; idx < 6; idx ++)
pcm_volume[idx] = pcm_volume[0];
wrap_volume_pcm(source->api, pcm_volume, PCM_MAX_CHANNELS);
return 0;
}
/* initializes ALSA sound card, UNICENS API */
CTLP_CAPI(Init, source, argsJ, queryJ)
{
int err = 0;
int pcm_volume[PCM_MAX_CHANNELS] = { 80, 80, 80, 80, 80, 80 };
AFB_ApiNotice(source->api, "Initializing HAL-MOST-UNICENS-BINDING");
if((err = wrap_ucs_subscribe_sync(source->api))) {
AFB_ApiError(source->api, "Failed to subscribe to UNICENS binding");
return err;
}
if((err = wrap_volume_init())) {
AFB_ApiError(source->api, "Failed to initialize wrapper for volume library");
return err;
}
// Set output volume to pre-defined level in order to
// avoid muted volume to be persistent after boot.
wrap_volume_master(source->api, 80);
wrap_volume_pcm(source->api, pcm_volume, PCM_MAX_CHANNELS);
AFB_ApiNotice(source->api, "Initializing HAL-MOST-UNICENS-BINDING done..");
initialized = 1;
return 0;
}
// This receive UNICENS events
CTLP_CAPI(Events, source, argsJ, queryJ)
{
int node;
int available;
if(wrap_json_unpack(queryJ, "{s:i,s:b}", "node", &node, "available", &available)) {
AFB_ApiNotice(source->api, "Node-Availability: node=0x%03X, available=%d", node, available);
wrap_volume_node_avail(source->api, node, available);
}
return 0;
}
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