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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_MIXER // needed for vasprintf
#include "alsa-softmixer.h"
#include <string.h>
// Fulup need to be cleanup with new controller version
extern Lua2cWrapperT Lua2cWrap;
PUBLIC AlsaSndZoneT *ApiZoneGetByUid(SoftMixerT *mixer, const char *target) {
AlsaSndZoneT * zone = NULL;
if (mixer->nbZones == 0) {
AFB_ApiError(mixer->api, "%s mixer=%s does not have any zone", __func__, mixer->uid);
goto fail;
}
// search for subdev into every registered loop
cds_list_for_each_entry(zone, &mixer->zones.list, list) {
if (zone->uid && !strcasecmp(zone->uid, target)) {
return zone;
}
}
fail:
AFB_ApiError(mixer->api, "%s mixer=%s fail to find zone=%s", __func__, mixer->uid, target);
return NULL;
}
STATIC AlsaPcmChannelT* ProcessOneChannel(SoftMixerT *mixer, const char* uid, json_object *channelJ) {
AlsaPcmChannelT *channel = calloc(1, sizeof (AlsaPcmChannelT));
if (!channel) {
SOFTMIXER_NOMEM(mixer->api);
goto fail;
}
CDS_INIT_LIST_HEAD(&channel->list);
channel->volume = -1;
int error = wrap_json_unpack(channelJ, "{ss,si,s?f !}"
, "target", &channel->uid
, "channel", &channel->port
, "volume", &channel->volume
);
if (error)
goto fail;
channel->uid = strdup(channel->uid);
if (!channel->uid) {
SOFTMIXER_NOMEM(mixer->api);
goto fail_channel;
}
AFB_ApiDebug(mixer->api, "%s: uid %s, channel uid %s, port %d, volume %f",
__func__, uid, channel->uid, channel->port, channel->volume);
return channel;
fail_channel:
free(channel);
fail:
AFB_ApiError(mixer->api, "%s: zone=%s channel: missing (target|channel) json=%s", __func__, uid, json_object_get_string(channelJ));
return NULL;
}
STATIC AlsaSndZoneT *AttachOneZone(SoftMixerT *mixer, const char *uid, json_object *zoneJ) {
AFB_ApiDebug(mixer->api, "%s uid %s", __func__, uid);
json_object *sinkJ = NULL, *sourceJ = NULL;
size_t count;
int error;
AlsaSndZoneT *zone = calloc(1, sizeof (AlsaSndZoneT));
if (!zone) {
SOFTMIXER_NOMEM(mixer->api);
goto fail;
}
CDS_INIT_LIST_HEAD(&zone->list);
CDS_INIT_LIST_HEAD(&zone->sinks.list);
CDS_INIT_LIST_HEAD(&zone->sources.list);
error = wrap_json_unpack(zoneJ, "{ss,s?o,s?o !}"
, "uid", &zone->uid
, "sink", &sinkJ
, "source", &sourceJ
);
if (error || (!sinkJ && sourceJ)) {
AFB_ApiNotice(mixer->api, "%s missing 'uid|sink|source' error=%s zone=%s", __func__, wrap_json_get_error_string(error), json_object_get_string(zoneJ));
goto fail_zone;
}
// make sure remain valid even when json object is removed
zone->uid = strdup(zone->uid);
if (!zone->uid) {
SOFTMIXER_NOMEM(mixer->api);
goto fail_zone;
}
AlsaPcmChannelT * channel = NULL;
if (sinkJ) {
switch (json_object_get_type(sinkJ)) {
case json_type_object:
channel = ProcessOneChannel(mixer, zone->uid, sinkJ);
if (!channel)
goto fail_uid;
zone->nbSinks++;
cds_list_add_tail(&channel->list, &zone->sinks.list);
break;
case json_type_array:
count = json_object_array_length(sinkJ);
for (int idx = 0; idx < count; idx++) {
json_object *subdevJ = json_object_array_get_idx(sinkJ, idx);
channel = ProcessOneChannel(mixer, zone->uid, subdevJ);
if (!channel)
goto fail_uid;
zone->nbSinks++;
cds_list_add_tail(&channel->list, &zone->sinks.list);
}
break;
default:
AFB_ApiError(mixer->api, "%s: Mixer=%s Hal=%s zone=%s invalid mapping=%s", __func__, mixer->uid, uid, zone->uid, json_object_get_string(sinkJ));
goto fail;
}
}
if (sourceJ) {
switch (json_object_get_type(sourceJ)) {
case json_type_object:
channel = ProcessOneChannel(mixer, zone->uid, sourceJ);
if (!channel)
goto fail_uid;
zone->nbSources++;
cds_list_add(&channel->list, &zone->sources.list);
break;
case json_type_array:
count = json_object_array_length(sourceJ);
for (int idx = 0; idx < count; idx++) {
json_object *subdevJ = json_object_array_get_idx(sourceJ, idx);
channel = ProcessOneChannel(mixer, zone->uid, subdevJ);
if (!zone)
goto fail_uid;
zone->nbSources++;
cds_list_add(&channel->list, &zone->sources.list);
}
break;
default:
AFB_ApiError(mixer->api, "%s: Mixer=%s Hal=%s zone=%s mapping=%s",
__func__, mixer->uid, uid, zone->uid, json_object_get_string(sourceJ));
goto fail;
}
}
AFB_ApiDebug(mixer->api, "%s uid %s DONE", __func__, uid);
return zone;
fail_uid:
free((char*)zone->uid);
fail_zone:
free(zone);
fail:
return NULL;
}
static void zoneDestroy(SoftMixerT* mixer, void * arg) {
AlsaSndZoneT * zone = (AlsaSndZoneT*) arg;
if (zone->routeConfig) {
AFB_ApiDebug(mixer->api, "%s... %s delete route config", __func__, zone->uid);
snd_config_delete(zone->routeConfig);
snd_config_update();
zone->routeConfig = NULL;
}
}
PUBLIC AlsaSndZoneT * zoneCreate(SoftMixerT* mixer, const char * uid, json_object * argsJ) {
AlsaSndZoneT * zone = AttachOneZone(mixer, uid, argsJ);
if (!zone)
goto fail;
// must be set now; AlsaCreateRoute needs it !
mixer->nbZones++;
cds_list_add_tail(&zone->list, &mixer->zones.list);
AlsaMixerTransactionObjectAdd(mixer->transaction, zone, zoneDestroy);
AlsaPcmCtlT *routeConfig = AlsaCreateRoute(mixer, zone, 0);
if (!routeConfig) {
AFB_ApiError(mixer->api,
"%s: Mixer=%s Hal=%s zone=%s Fail to attach PCM Route",
__func__, mixer->uid, uid, zone->uid);
goto fail;
}
fail:
return zone;
}
PUBLIC int ApiZoneAttach(SoftMixerT *mixer, AFB_ReqT request, const char * uid, json_object * argsJ) {
AFB_ApiDebug(mixer->api, "%s uid %s", __func__, uid);
if (mixer->nbZones >= mixer->max.zones) {
AFB_ReqFailF(request, "too-small", "mixer=%s max zone=%d", mixer->uid, mixer->max.zones);
goto OnErrorExit;
}
switch (json_object_get_type(argsJ)) {
long count;
case json_type_object: {
AlsaSndZoneT * newZone = zoneCreate(mixer, uid, argsJ);
if (!newZone) {
AFB_ReqFailF(request, "bad-zone", "mixer=%s invalid zone= %s", mixer->uid, json_object_get_string(argsJ));
goto OnErrorExit;
}
break;
}
case json_type_array:
count = json_object_array_length(argsJ);
if (count > (mixer->max.zones - mixer->nbZones)) {
AFB_ReqFailF(request, "too-small", "mixer=%s max zone=%d", mixer->uid, mixer->max.zones);
goto OnErrorExit;
}
for (int idx = 0; idx < count; idx++) {
json_object *zoneJ = json_object_array_get_idx(argsJ, idx);
AlsaSndZoneT * newZone = zoneCreate(mixer, uid, zoneJ);
if (!newZone) {
AFB_ReqFailF(request, "bad-zone", "mixer=%s invalid zone= %s", mixer->uid, json_object_get_string(zoneJ));
goto OnErrorExit;
}
}
break;
default:
AFB_ReqFailF(request, "invalid-syntax", "mixer=%s zones invalid argsJ= %s", mixer->uid, json_object_get_string(argsJ));
goto OnErrorExit;
}
AFB_ApiDebug(mixer->api, "%s uid %s DONE", __func__, uid);
return 0;
OnErrorExit:
return -1;
}
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