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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>
#include <pthread.h>
// Fulup need to be cleanup with new controller version
extern Lua2cWrapperT Lua2cWrap;
// API
static void MixerApiVerbCB(AFB_ReqT request) {
json_object *valueJ, *backendJ = NULL, *frontendJ = NULL, *zonesJ = NULL, *streamsJ = NULL, *listJ = NULL;
// retrieve action handle from request and execute the request
json_object *argsJ = afb_request_json(request);
json_object *responseJ = json_object_new_object();
SoftMixerHandleT *mixer = (SoftMixerHandleT*) afb_request_get_vcbdata(request);
int error;
int delete = 0;
CtlSourceT *source = alloca(sizeof (CtlSourceT));
source->uid = mixer->uid;
source->api = request->dynapi;
source->request = request;
source->context = mixer;
error = wrap_json_unpack(argsJ, "{s?b,s?o,s?o,s?o,s?o,s?o !}"
, "delete", &delete
, "list", &listJ
, "backend", &backendJ
, "frontend", &frontendJ
, "zones", &zonesJ
, "streams", &streamsJ
);
if (error) {
AFB_ReqFailF(request, "invalid-syntax", "request missing 'uid|list|backend|frontend|zones|streams' mixer=%s", json_object_get_string(argsJ));
goto OnErrorExit;
}
// Free attached resources and free mixer
if (delete) {
for (int idx; mixer->streams[idx].uid; idx++) {
AlsaLoopStreamT *stream = &mixer->streams[idx];
AFB_ApiNotice(source->api, "cleaning mixer=%s stream=%s", mixer->uid, stream->uid);
error = pthread_cancel(stream->copy.thread);
if (error) {
AFB_ReqFailF(request, "internal-error", "Fail to kill audio-stream threads mixer=%s", mixer->uid);
goto OnErrorExit;
}
char apiStreamVerb[128];
error = snprintf(apiStreamVerb, sizeof (apiStreamVerb), "%s/%s", mixer->uid, stream->uid);
if (error == sizeof (apiStreamVerb)) {
AFB_ApiError(source->api, "LoopStreams mixer=%s fail to Registry Stream API too long %s/%s", mixer->uid, mixer->uid, stream->uid);
goto OnErrorExit;
}
error = afb_dynapi_sub_verb(source->api, apiStreamVerb);
if (error) {
AFB_ApiError(source->api, "fail to Clean API verb=%s", apiStreamVerb);
goto OnErrorExit;
}
// free audio-stream dynamic structures
snd_pcm_close(mixer->streams[idx].copy.pcmIn);
snd_pcm_close(mixer->streams[idx].copy.pcmOut);
if (stream->copy.evtsrc) sd_event_source_unref(stream->copy.evtsrc);
if (stream->copy.sdLoop) sd_event_unref(stream->copy.sdLoop);
}
// registry is attached to frontend
if (mixer->frontend->registry)free(mixer->frontend->registry);
error = afb_dynapi_sub_verb(source->api, mixer->uid);
if (error) {
AFB_ApiError(source->api, "fail to Clean API verb=%s", mixer->uid);
goto OnErrorExit;
}
// finally free mixer handle
free(mixer);
responseJ = json_object_new_string("Fulup: delete might not clean everything properly");
goto OnSuccessExit;
}
if (listJ) {
int streams = 0, quiet = 0, backend = 0, frontend = 0, zones = 0;
error = wrap_json_unpack(listJ, "{s?b,s?b,s?b,s?b,s?b !}"
, "quiet", &quiet
, "streams", &streams
, "backend", &backend
, "frontend", &frontend
, "zones", &zones
);
if (error) {
AFB_ReqFailF(request, "invalid-syntax", "list missing 'uid|backend|frontend|zones|streams' list=%s", json_object_get_string(listJ));
goto OnErrorExit;
}
if (streams) {
streamsJ = json_object_new_array();
AlsaLoopStreamT *streams = mixer->streams;
for (int idx = 0; streams[idx].uid; idx++) {
if (quiet) {
json_object_array_add(streamsJ, json_object_new_string(streams[idx].uid));
} else {
json_object *numidJ;
wrap_json_pack(&numidJ, "{si,si}"
, "volume", streams[idx].volume
, "mute", streams[idx].mute
);
wrap_json_pack(&valueJ, "{ss,so}"
, "uid", streams[idx].uid
, "numid", numidJ
);
json_object_array_add(streamsJ, valueJ);
AFB_ApiWarning(request->dynapi, "stream=%s", json_object_get_string(streamsJ));
}
}
json_object_object_add(responseJ, "streams", streamsJ);
}
if (backend || frontend || zones) {
AFB_ReqFailF(request, "not implemented", "(Fulup) list action Still To Be Done");
goto OnErrorExit;
}
AFB_ReqSucess(request, responseJ, NULL);
return;
}
if (backendJ) {
error = SndBackend(source, backendJ);
if (error) goto OnErrorExit;
}
if (frontendJ) {
error = SndFrontend(source, frontendJ);
if (error) goto OnErrorExit;
}
if (zonesJ) {
error = SndZones(source, zonesJ);
if (error) goto OnErrorExit;
}
if (streamsJ) {
error = LoopStreams(source, streamsJ, &responseJ);
if (error) goto OnErrorExit;
}
OnSuccessExit:
AFB_ReqSucess(request, responseJ, mixer->uid);
return;
OnErrorExit:
return;
}
CTLP_LUA2C(_mixer_new_, source, argsJ, responseJ) {
SoftMixerHandleT *mixer = calloc(1, sizeof (SoftMixerHandleT));
json_object *backendJ = NULL, *frontendJ = NULL, *zonesJ = NULL, *streamsJ = NULL;
int error;
assert(source->api);
if (json_object_get_type(argsJ) != json_type_object) {
AFB_ApiError(source->api, "_mixer_new_: invalid object type= %s", json_object_get_string(argsJ));
goto OnErrorExit;
}
error = wrap_json_unpack(argsJ, "{ss,s?s,s?o,s?o,s?o,s?o !}"
, "uid", &mixer->uid
, "info", &mixer->info
, "backend", &backendJ
, "frontend", &frontendJ
, "zones", &zonesJ
, "streams", &streamsJ);
if (error) {
AFB_ApiNotice(source->api, "_mixer_new_ missing 'uid|backend|frontend|zones|streams' mixer=%s", json_object_get_string(argsJ));
goto OnErrorExit;
}
// make sure string do not get deleted
mixer->uid = strdup(mixer->uid);
if (mixer->info)mixer->info = strdup(mixer->info);
// create mixer verb within API.
error = afb_dynapi_add_verb(source->api, mixer->uid, mixer->info, MixerApiVerbCB, mixer, NULL, 0);
if (error) {
AFB_ApiError(source->api, "_mixer_new_ mixer=%s fail to Registry API verb", mixer->uid);
return -1;
}
// make sure sub command get access to mixer handle
source->context = mixer;
if (backendJ) {
error = SndBackend(source, backendJ);
if (error) goto OnErrorExit;
}
if (frontendJ) {
error = SndFrontend(source, frontendJ);
if (error) goto OnErrorExit;
}
if (zonesJ) {
error = SndZones(source, zonesJ);
if (error) goto OnErrorExit;
}
if (streamsJ) {
error = LoopStreams(source, streamsJ, responseJ);
if (error) goto OnErrorExit;
}
return 0;
OnErrorExit:
return -1;
}
// provide a similar command but for API
CTLP_CAPI(mixer_new, source, argsJ, queryJ) {
json_object * responseJ;
// merge static config args with dynamic one coming from the request
if (argsJ && json_object_get_type(argsJ) == json_type_object) {
json_object_object_foreach(argsJ, key, val) {
json_object_get(val);
json_object_object_add(queryJ, key, val);
}
}
int error = _mixer_new_(source, queryJ, &responseJ);
if (error)
AFB_ReqFailF(source->request, "fail-create", "invalid arguments");
else
AFB_ReqSucess(source->request, responseJ, NULL);
return error;
}
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