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-rw-r--r--HAL-afb/Unicens-USB/UnicensHAL.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/HAL-afb/Unicens-USB/UnicensHAL.c b/HAL-afb/Unicens-USB/UnicensHAL.c
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+/*
+ * Copyright (C) 2016 "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.
+ *
+ *
+ * To find out which control your sound card uses
+ * aplay -l # Check sndcard name name in between []
+ * amixer -D hw:xx controls # get supported controls
+ * amixer -D "hw:3" cget numid=xx # get control settings
+ *
+ */
+#define _GNU_SOURCE
+#include "hal-interface.h"
+#include "audio-interface.h"
+
+STATIC struct json_object* MasterOnOff (alsaHalCtlMapT *control, void* handle, struct json_object *valJ) {
+ struct json_object *reponseJ;
+
+ AFB_INFO ("Power Set value=%s", json_object_get_string(valJ));
+
+ reponseJ=json_object_new_object();
+ json_object_object_add (reponseJ, "Callback", json_object_new_string("Hello From HAL"));
+
+ return reponseJ;
+}
+
+// Map HAL hight sndctl with Alsa numid and optionally with a custom callback for non Alsa supported functionalities.
+STATIC alsaHalMapT alsaHalMap[]= {
+ { .tag=Master_Playback_Volume, .ctl={.numid=04 } },
+ { .tag=PCM_Playback_Volume , .ctl={.numid=06 } },
+ { .tag=PCM_Playback_Switch , .ctl={.numid=05 } },
+ { .tag=Capture_Volume , .ctl={.numid=12 } },
+ { .tag=Master_OnOff_Switch , .ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_BOOLEAN, .count=1, .name="Power-Switch"}, .cb={.callback=MasterOnOff, .handle=NULL}},
+ { .tag=Master_Playback_Ramp , .ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .name="Volume-Switch"}, .cb={.callback=MasterOnOff, .handle=NULL}},
+
+ { .tag=EndHalCrlTag} /* marker for end of the array */
+} ;
+
+// HAL sound card mapping info
+STATIC alsaHalSndCardT alsaHalSndCard = {
+ .name = "HDA Intel PCH", // WARNING: name MUST match with 'aplay -l'
+ .info = "Hardware Abstraction Layer for IntelHDA sound card",
+ .ctls = alsaHalMap,
+};
+
+
+STATIC int sndServiceInit () {
+ int err;
+ AFB_DEBUG ("IntelHalBinding Init");
+
+ err = halServiceInit (afbBindingV2.api, &alsaHalSndCard);
+ return err;
+}
+
+// API prefix should be unique for each snd card
+PUBLIC const struct afb_binding_v2 afbBindingV2 = {
+ .api = "intel-hda",
+ .init = sndServiceInit,
+ .verbs = halServiceApi,
+ .onevent = halServiceEvent,
+};