diff options
Diffstat (limited to 'plugins/alsa/alsa-api-sink.c')
| -rw-r--r-- | plugins/alsa/alsa-api-sink.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/plugins/alsa/alsa-api-sink.c b/plugins/alsa/alsa-api-sink.c new file mode 100644 index 0000000..ab32276 --- /dev/null +++ b/plugins/alsa/alsa-api-sink.c @@ -0,0 +1,111 @@ +/* + * 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) { + + AlsaSndZoneT *zone = ApiZoneGetByUid(mixer, target); + if (!zone || !zone->sinks) return NULL; + + // use 1st channel to find attached sound card. + const char *channel = zone->sinks[0]->uid; + + // search for channel uid into mixer sinks + 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 int ApiSinkAttach(SoftMixerT *mixer, AFB_ReqT request, const char *uid, json_object * argsJ) { + + int index; + 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 argsJ= %s", mixer->uid, mixer->max.sinks, json_object_get_string(argsJ)); + goto OnErrorExit; + } + + switch (json_object_get_type(argsJ)) { + long count; + char *dmixUid; + AlsaPcmCtlT* dmixConfig; + + case json_type_object: + mixer->sinks[index] = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_PLAYBACK, argsJ); + if (!mixer->sinks[index]) { + AFB_ReqFailF(request, "invalid-syntax", "mixer=%s invalid sink= %s", mixer->uid, json_object_get_string(argsJ)); + goto OnErrorExit; + } + + // move from hardware to DMIX attach to sndcard + (void) asprintf(&dmixUid, "dmix-%s", mixer->sinks[index]->uid); + + 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 - count)) { + AFB_ReqFailF(request, "too-small", "mixer=%s max sink=%d argsJ= %s", mixer->uid, mixer->max.sinks, json_object_get_string(argsJ)); + goto OnErrorExit; + } + + for (int idx = 0; idx < count; idx++) { + json_object *sinkJ = json_object_array_get_idx(argsJ, idx); + mixer->sinks[index + idx] = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_PLAYBACK, sinkJ); + if (!mixer->sinks[index + idx]) { + AFB_ReqFailF(request, "invalid-syntax", "mixer=%s invalid sink= %s", mixer->uid, json_object_get_string(sinkJ)); + goto OnErrorExit; + } + + // move from hardware to DMIX attach to sndcard + (void) asprintf(&dmixUid, "dmix-%s", mixer->sinks[index]->uid); + + 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; + default: + AFB_ReqFailF(request, "invalid-syntax", "mixer=%s sinks invalid argsJ= %s", mixer->uid, json_object_get_string(argsJ)); + goto OnErrorExit; + } + + return 0; + +OnErrorExit: + return -1; +}
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