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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"
PUBLIC AlsaPcmHwInfoT *ApiSinkGetParamsByZone(SoftMixerT *mixer, const char *target) {
// try to attach a zone as stream playback sink
AlsaSndZoneT *zone = ApiZoneGetByUid(mixer, target);
if (zone && zone->sinks) {
// use 1st channel to find attached sound card.
const char *channel = zone->sinks[0]->uid;
// search for channel uid into mixer sinks and derive sound card
for (int idx = 0; mixer->sinks[idx]; idx++) {
for (int jdx = 0; jdx < mixer->sinks[idx]->ccount; jdx++) {
if (mixer->sinks[idx]->channels[jdx]->uid && !strcasecmp(channel, mixer->sinks[idx]->channels[jdx]->uid)) {
return mixer->sinks[idx]->sndcard->params;
}
}
}
}
return NULL;
}
PUBLIC AlsaSndPcmT *ApiSinkGetByUid(SoftMixerT *mixer, const char *target) {
// if no attached zone found, then try direct sink attachment
for (int idx = 0; mixer->sinks[idx]; idx++) {
if (mixer->sinks[idx]->uid && !strcasecmp(mixer->sinks[idx]->uid, target)) {
return mixer->sinks[idx];
}
}
return NULL;
}
PUBLIC int ApiSinkAttach(SoftMixerT *mixer, AFB_ReqT request, const char *uid, json_object * argsJ) {
int index;
char *dmixUid = NULL;
for (index = 0; index < mixer->max.sinks; index++) {
if (!mixer->sinks[index]) break;
}
if (index == mixer->max.sinks) {
AFB_ReqFailF(request, "too-small", "mixer=%s max sink=%d", mixer->uid, mixer->max.sinks);
goto OnErrorExit;
}
switch (json_object_get_type(argsJ)) {
long count;
AlsaPcmCtlT* dmixConfig;
case json_type_object:
mixer->sinks[index] = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_PLAYBACK, argsJ);
if (!mixer->sinks[index]) {
AFB_ReqFailF(request, "bad-pcm", "mixer=%s invalid sink= %s", mixer->uid, json_object_get_string(argsJ));
goto OnErrorExit;
}
// move from hardware to DMIX attach to sndcard
if (asprintf(&dmixUid, "dmix-%s", mixer->sinks[index]->uid) == -1)
goto OnErrorExit;
dmixConfig = AlsaCreateDmix(mixer, dmixUid, mixer->sinks[index], 0);
if (!dmixConfig) {
AFB_ReqFailF(request, "internal-error", "mixer=%s sink=%s fail to create DMIX config", mixer->uid, mixer->sinks[index]->uid);
goto OnErrorExit;
}
break;
case json_type_array:
count = json_object_array_length(argsJ);
if (count > (mixer->max.sinks - index)) {
AFB_ReqFailF(request, "too-small", "mixer=%s max sink=%d", mixer->uid, mixer->max.sinks);
goto OnErrorExit;
}
for (int idx = 0; idx < count; idx++) {
json_object *sinkJ = json_object_array_get_idx(argsJ, idx);
AlsaSndPcmT * pcm = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_PLAYBACK, sinkJ);
if (!pcm) {
AFB_ReqFailF(request, "bad-pcm", "mixer=%s invalid sink= %s", mixer->uid, json_object_get_string(sinkJ));
goto OnErrorExit;
}
// move from hardware to DMIX attach to sndcard
if (asprintf(&dmixUid, "dmix-%s", pcm->uid) == -1)
goto OnErrorExit;
dmixConfig = AlsaCreateDmix(mixer, dmixUid, pcm, 0);
if (!dmixConfig) {
AFB_ReqFailF(request, "internal-error", "mixer=%s sink=%s fail to create DMIX config", mixer->uid, pcm->uid);
goto OnErrorExit;
}
mixer->sinks[index + idx] = pcm;
}
break;
default:
AFB_ReqFailF(request, "invalid-syntax", "mixer=%s sinks invalid argsJ= %s", mixer->uid, json_object_get_string(argsJ));
goto OnErrorExit;
}
return 0;
OnErrorExit:
free(dmixUid);
return -1;
}
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