1 files changed, 68 insertions, 0 deletions
diff --git a/HAL-afb/HDA-intel/IntelHdaHAL.c b/HAL-afb/HDA-intel/IntelHdaHAL.c
new file mode 100644
index 0000000..bc8fc43
--- /dev/null
+++ b/HAL-afb/HDA-intel/IntelHdaHAL.c
@@ -0,0 +1,68 @@
+/*
+ * 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.
+ */
+#define _GNU_SOURCE 
+#include "hal-interface.h"
+#include "audio-interface.h" 
+
+// Force a hard dependency to ShareHallLib
+PUBLIC char* SharedHalLibVersion;
+
+// Init is call after all binding are loaded
+STATIC int IntelHalInit (const struct afb_binding_interface *itf, struct afb_service service) {
+    DEBUG (itf, "IntelHalBinding Initialised");
+    
+    return 0; // 0=OK 
+}
+
+/******************************************************************************************
+ * alsaCtlsMap link hight level sound control with low level Alsa numid ctls. 
+ * 
+ * To find out which control your sound card uses
+ *  aplay -l
+ *  amixer -D hw:xx controls
+ *  amixer -D hw:xx contents
+ *  amixer -D "hw:3" cget numid=xx
+ * 
+ * When automatic mapping to Alsa numid is not enough a custom callback might be used
+ *  .cb={.handle=xxxx, .callback=(json_object)MyCtlFunction(struct afb_service service, int controle, int value, const struct alsaHalCtlMapS *map)};
+ ********************************************************************************************/
+STATIC alsaHalMapT  alsaHalMap[]= { 
+  { .alsa={.control=Master_Playback_Volume,.numid=16,.group=OUTVOL,.values=1,.minval=0,.maxval= 87 ,.step=0,.acl=RW}, .info= "Master Playback Volume" },
+  { .alsa={.control=PCM_Playback_Volume   ,.numid=27,.group=PCMVOL,.values=2,.minval=0,.maxval= 255,.step=0,.acl=RW}, .info= "PCM Playback Volume" },
+  { .alsa={.control=PCM_Playback_Switch   ,.numid=17,.group=SWITCH,.values=1,.minval=0,.maxval= 1  ,.step=0,.acl=RW}, .info= "Master Playback Switch" },
+  { .alsa={.control=Capture_Volume        ,.numid=12,.group=INVOL ,.values=2,.minval=0,.maxval= 31 ,.step=0,.acl=RW}, .info= "Capture Volume" },
+  { .alsa={.numid=0}, .cb={.callback=NULL, .handle=NULL}} /* marker for end of the array */
+} ;
+
+/***********************************************************************************
+ * AlsaHalSndT provides 
+ *  - cardname used to map a given card to its HAL 
+ *  - ctls previously defined AlsaHalMapT control maps
+ *  - info free text
+ * 
+ *    WARNING: name should fit with 'aplay -l' as it used to map from devid to HAL
+ *    you may also retreive shortname when AudioBinder is running from a browser
+ *    http://localhost:1234/api/alsacore/getcardid?devid=hw:xxx
+ *   
+ ***********************************************************************************/
+PUBLIC alsaHalSndCardT alsaHalSndCard  = {
+    .name  = "HDA Intel PCH",
+    .info  = "Hardware Abstraction Layer for IntelHDA sound card",
+    .ctls  = alsaHalMap,
+    .prefix="intel-hda",
+    .initCB=IntelHalInit, // if NULL no initcallback
+};