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/*
* Copyright (C) 2018 "IoT.bzh"
* Author Fulup Ar Foll <fulup@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.
*
*/
#define _GNU_SOURCE // needed for vasprintf
#include "alsa-softmixer.h"
#include <string.h>
// Fulup need to be cleanup with new controller version
extern Lua2cWrapperT Lua2cWrap;
STATIC int ProcessOneChannel(CtlSourceT *source, const char* uid, json_object *channelJ, AlsaPcmChannels *channel) {
const char*channelUid;
int error = wrap_json_unpack(channelJ, "{ss,si,s?i !}", "target", &channelUid, "channel", &channel->port);
if (error) goto OnErrorExit;
channel->uid=strdup(channelUid);
return 0;
OnErrorExit:
AFB_ApiError(source->api, "ProcessOneChannel: zone=%s channel: missing (target||channel) json=%s", uid, json_object_get_string(channelJ));
return -1;
}
STATIC int ProcessOneZone(CtlSourceT *source, json_object *zoneJ, AlsaSndZoneT *zone) {
json_object *mappingJ;
size_t count;
const char* streamType;
int error;
error = wrap_json_unpack(zoneJ, "{ss,s?s,so !}", "uid", &zone->uid, "type", &streamType, "mapping", &mappingJ);
if (error) {
AFB_ApiNotice(source->api, "ProcessOneone missing 'uid|type|mapping' zone=%s", json_object_get_string(zoneJ));
goto OnErrorExit;
}
if (!streamType) zone->type = SND_PCM_STREAM_PLAYBACK;
else {
if (!strcasecmp(streamType, "capture")) zone->type = SND_PCM_STREAM_CAPTURE;
else if (!strcasecmp(streamType, "playback")) zone->type = SND_PCM_STREAM_PLAYBACK;
else {
AFB_ApiError(source->api, "ProcessOneZone:%s invalid stream type !(playback||capture) json=%s", zone->uid, json_object_get_string(zoneJ));
goto OnErrorExit;
}
}
// make sure remain valid even when json object is removed
zone->uid= strdup(zone->uid);
switch (json_object_get_type(mappingJ)) {
case json_type_object:
count = 1;
zone->channels = calloc(count + 1, sizeof (AlsaPcmChannels));
error = ProcessOneChannel(source, zone->uid, mappingJ, &zone->channels[0]);
if (error) goto OnErrorExit;
break;
case json_type_array:
count = json_object_array_length(mappingJ);
zone->channels = calloc(count + 1, sizeof (AlsaPcmChannels));
for (int idx = 0; idx < count; idx++) {
json_object *channelJ = json_object_array_get_idx(mappingJ, idx);
error = ProcessOneChannel(source, zone->uid, channelJ, &zone->channels[idx]);
if (error) goto OnErrorExit;
}
break;
default:
AFB_ApiError(source->api, "ProcessOneZone:%s invalid mapping=%s", zone->uid, json_object_get_string(mappingJ));
goto OnErrorExit;
}
return 0;
OnErrorExit:
return -1;
}
CTLP_LUA2C(snd_zones, source, argsJ, responseJ) {
AlsaSndZoneT *sndZone;
int error;
size_t count;
switch (json_object_get_type(argsJ)) {
case json_type_object:
count = 1;
sndZone = calloc(count + 1, sizeof (AlsaSndZoneT));
error = ProcessOneZone(source, argsJ, &sndZone[0]);
if (error) {
AFB_ApiError(source->api, "L2C:sndzones: invalid zone= %s", json_object_get_string(argsJ));
goto OnErrorExit;
}
break;
case json_type_array:
count = json_object_array_length(argsJ);
sndZone = calloc(count + 1, sizeof (AlsaSndZoneT));
for (int idx = 0; idx < count; idx++) {
json_object *sndZoneJ = json_object_array_get_idx(argsJ, idx);
error = ProcessOneZone(source, sndZoneJ, &sndZone[idx]);
if (error) {
AFB_ApiError(source->api, "L2C:sndzones: invalid zone= %s", json_object_get_string(sndZoneJ));
goto OnErrorExit;
}
}
break;
default:
AFB_ApiError(source->api, "L2C:sndzones: invalid argsJ= %s", json_object_get_string(argsJ));
goto OnErrorExit;
}
// register routed into global softmixer handle
Softmixer->zonePcms = calloc(count+1, sizeof (AlsaPcmInfoT*));
// instantiate one route PCM per zone with multi plugin as slave
for (int idx = 0; sndZone[idx].uid != NULL; idx++) {
Softmixer->zonePcms[idx] = AlsaCreateRoute(source, &sndZone[idx]);
if (!Softmixer->zonePcms[idx]) {
AFB_ApiNotice(source->api, "L2C:sndzones fail to create route zone=%s", sndZone[idx].uid);
goto OnErrorExit;
}
snd_pcm_close(Softmixer->zonePcms[idx]->handle);
}
// do not need this handle anymore
free (sndZone);
return 0;
OnErrorExit:
return -1;
}
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