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/*
* 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 <string.h>
#include "hal-interface.h"
#include "wrap-json.h"
#include "wrap_unicens.h"
#include "wrap_volume.h"
#define ALSA_CARD_NAME "ep016ch"
#define ALSA_DEVICE_ID "hw:ep016ch"
#define PCM_MAX_CHANNELS 6
/* Define few private tag for not standard functions */
#define PCM_Volume_Multimedia 1000
#define PCM_Volume_Navigation 1001
#define PCM_Volume_Emergency 1002
static int master_volume = 80;
static json_bool master_switch;
static int pcm_volume[PCM_MAX_CHANNELS] = {100,100,100,100,100,100};
static void unicens_apply_card_value(void *closure, struct json_object *j_obj){
int num_id = 0;
int values[6];
/* apply master volume */
if (wrap_json_unpack(j_obj, "{s:i, s:[i!]}", "id", &num_id, "val",
&values[0])
== 0) {
if (num_id == 1) {
AFB_NOTICE("unicens_apply_card_value: num_id: %d, value: %d",
num_id,
values[0]);
wrap_volume_master(values[0]);
return;
}
}
if (wrap_json_unpack(j_obj, "{s:i, s:[iiiiii!]}", "id", &num_id, "val",
&values[0], &values[1], &values[2], &values[3], &values[4], &values[5])
== 0) {
if (num_id == 2) {
AFB_NOTICE("unicens_apply_card_value: success, num_id: %d", num_id);
wrap_volume_pcm(&values[0], 6);
return;
}
}
AFB_ERROR("unicens_apply_card_value: no card value applied");
}
static void unicens_request_card_values_cb(void *closure, int status, struct json_object *j_response) {
json_object *j_obj;
AFB_INFO("unicens_request_card_values_cb: closure=%p status=%d, res=%s", closure, status, json_object_to_json_string(j_response));
if (json_object_object_get_ex(j_response, "response", &j_obj)) {
wrap_json_optarray_for_all(j_obj, &unicens_apply_card_value, NULL);
}
}
static __attribute__((unused)) void unicens_request_card_values(const char* dev_id) {
int err;
json_object *j_query = NULL;
err = wrap_json_pack(&j_query, "{s:s, s:i}", "devid", dev_id, "mode", 0);
if (err) {
AFB_ERROR("Failed to call wrap_json_pack");
goto OnErrorExit;
}
afb_service_call("alsacore", "ctlget", j_query,
&unicens_request_card_values_cb,
NULL);
OnErrorExit:
return;
}
void unicens_master_vol_cb(halCtlsTagT 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);
wrap_volume_master(master_volume);
}
else {
AFB_NOTICE("master_volume: INVALID STRING %s", j_str);
}
}
void unicens_master_switch_cb(halCtlsTagT 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(halCtlsTagT 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);
wrap_volume_pcm(pcm_volume, PCM_MAX_CHANNELS/*array size*/);
}
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=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .value=80, .name="Master Playback Volume"}
},
#if 0
/*{ .tag=Master_OnOff_Switch, .cb={.callback=unicens_master_switch_cb, .handle=&master_switch}, .info="Sets master playback switch",
.ctl={.numid=CTL_AUTO, .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=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=6, .minval=0, .maxval=100, .step=1, .value=100, .name="PCM Playback Volume"}
},
#endif
{ .tag=EndHalCrlTag} /* marker for end of the array */
} ;
/* HAL sound card mapping info */
STATIC alsaHalSndCardT alsaHalSndCard = {
.name = ALSA_CARD_NAME, /* 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 */
};
/* initializes ALSA sound card, UNICENS API */
STATIC int unicens_service_init() {
int err = 0;
AFB_NOTICE("Initializing HAL-MOST-UNICENS-BINDING");
err = wrap_volume_init();
if (err) {
AFB_ERROR("Failed to initialize wrapper for volume library");
goto OnErrorExit;
}
/* Step 1: Set output volume to pre-defined level */
/* in order to avoid muted volume to be persistent after boot. */
wrap_volume_master(80);
wrap_volume_pcm(pcm_volume, PCM_MAX_CHANNELS/*array size*/);
/* Step 2: risk to have influence on mixer controls init */
/* request of initial card values */
/* unicens_request_card_values(ALSA_DEVICE_ID); */
err = halServiceInit(afbBindingV2.api, &alsaHalSndCard);
if (err) {
AFB_ERROR("Cannot initialize ALSA soundcard.");
goto OnErrorExit;
}
err= afb_daemon_require_api("UNICENS", 1);
if (err) {
AFB_ERROR("Failed to access UNICENS API");
goto OnErrorExit;
}
err = wrap_ucs_subscribe_sync();
if (err) {
AFB_ERROR("Failed to subscribe to UNICENS binding");
goto OnErrorExit;
}
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, event=%s", evtname, json_object_get_string(j_event));
if (strcmp(evtname, "UNICENS/node-availibility") == 0) {
int node;
int available;
if (wrap_json_unpack(j_event, "{s:i,s:b}", "node", &node, "available", &available) == 0) {
AFB_NOTICE("Node-Availability: node=0x%03X, available=%d", node, available);
wrap_volume_node_avail(node, available);
}
}
return;
}
AFB_NOTICE("unicens_event_cb: UNHANDLED EVENT, evtname=%s, event=%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,
};
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