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-rw-r--r--plugins/alsa/alsa-api-sink.c111
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;
+} \ No newline at end of file