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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>
PUBLIC AlsaSndCtlT *ApiSourceFindSubdev(SoftMixerT *mixer, const char *target) {
// search for subdev into every registered source in the mixer
AlsaSndPcmT * source;
cds_list_for_each_entry(source, &mixer->sources.list, list) {
if (source->uid && !strcmp(source->uid, target))
return source->sndcard;
}
return NULL;
}
static void sourceDestroy(SoftMixerT* mixer, void * arg) {
AlsaSndPcmT * source = (AlsaSndPcmT*) arg;
AFB_API_DEBUG(mixer->api, "%s... %s", __func__, source->uid);
cds_list_del(&source->list);
mixer->nbSources--;
ApiPcmDelete(mixer, source);
AFB_API_DEBUG(mixer->api, "%s... DONE", __func__);
}
static AlsaSndPcmT * sourceCreate(SoftMixerT* mixer, const char * uid, json_object * argsJ) {
AlsaSndPcmT * newSource = NULL;
newSource = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_CAPTURE, argsJ);
if (!newSource) {
goto fail;
}
mixer->nbSources++;
cds_list_add(&newSource->list, &mixer->sources.list);
AlsaMixerTransactionObjectAdd(mixer->transaction, newSource, sourceDestroy);
fail:
return newSource;
}
PUBLIC int ApiSourceAttach(SoftMixerT *mixer, afb_req_t request, const char * uid, json_object * argsJ) {
if (mixer->nbSources >= mixer->max.sources) {
afb_req_fail_f(request, "too-small", "mixer=%s max source=%d", mixer->uid, mixer->max.sources);
goto fail;
}
AlsaSndPcmT * newSource = NULL;
switch (json_object_get_type(argsJ)) {
long count;
case json_type_object:
newSource = sourceCreate(mixer, uid, argsJ);
if (!newSource) {
afb_req_fail_f(request, "bad-pcm", "mixer=%s invalid source= %s", mixer->uid, json_object_get_string(argsJ));
goto fail;
}
break;
case json_type_array:
count = json_object_array_length(argsJ);
if (count > (mixer->max.sources - mixer->nbSources)) {
afb_req_fail_f(request, "too-small", "mixer=%s max source=%d", mixer->uid, mixer->max.sources);
goto fail;
}
for (int idx = 0; idx < count; idx++) {
json_object *sourceJ = json_object_array_get_idx(argsJ, idx);
newSource = sourceCreate(mixer, uid, sourceJ);
if (!newSource) {
afb_req_fail_f(request, "bad-pcm", "mixer=%s invalid source= %s", mixer->uid, json_object_get_string(sourceJ));
goto fail;
}
}
break;
default:
afb_req_fail_f(request, "invalid-syntax", "mixer=%s sources invalid argsJ= %s", mixer->uid, json_object_get_string(argsJ));
goto fail;
}
return 0;
fail:
return -1;
}
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