5 files changed, 277 insertions, 0 deletions
diff --git a/AudioLogic/AudioLogicBinding.c b/AudioLogic/AudioLogicBinding.c
new file mode 100644
index 0000000..65943c0
--- /dev/null
+++ b/AudioLogic/AudioLogicBinding.c
@@ -0,0 +1,84 @@
+/*
+ * 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 <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <math.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#define _GNU_SOURCE  // needed for vasprintf
+#include "AudioLogicLib.h"
+
+PUBLIC const struct afb_binding_interface *afbIface;   
+
+STATIC void localping(struct afb_req request) {
+    json_object *query = afb_req_json(request);
+    afb_req_success(request, query, NULL); 
+}
+
+/*
+ * array of the verbs exported to afb-daemon
+ */
+STATIC const struct afb_verb_desc_v1 binding_verbs[] = {
+  /* VERB'S NAME            SESSION MANAGEMENT          FUNCTION TO CALL         SHORT DESCRIPTION */
+  { .name= "ping"   ,    .session= AFB_SESSION_NONE, .callback= localping,      .info= "Ping Binding" },
+  { .name= "setvolume",  .session= AFB_SESSION_NONE, .callback= audioLogicSetVol,    .info= "Set Volume" },
+  { .name= "getvolume",  .session= AFB_SESSION_NONE, .callback= audioLogicGetVol,    .info= "Get Volume" },
+  { .name= "monitor",    .session= AFB_SESSION_NONE, .callback= audioLogicMonitor,   .info= "Subscribe Volume Events" },
+  { .name= NULL } /* marker for end of the array */
+};
+
+/*
+ * description of the binding for afb-daemon
+ */
+STATIC const struct afb_binding binding_description = {
+  /* description conforms to VERSION 1 */
+  .type= AFB_BINDING_VERSION_1,
+  .v1= {
+    .prefix= "audio",
+    .info= "High Level Interface to Audio bindings",
+    .verbs = binding_verbs
+  }
+};
+
+// This receive all event this binding subscribe to 
+PUBLIC void afbBindingV1ServiceEvent(const char *evtname, struct json_object *object) {
+  
+    NOTICE (afbIface, "afbBindingV1ServiceEvent evtname=%s [msg=%s]", evtname, json_object_to_json_string(object));
+}
+
+// this is call when after all bindings are loaded
+PUBLIC int afbBindingV1ServiceInit(struct afb_service service) {
+    
+   return (audioLogicInit(service)); 
+};
+
+/*
+ * activation function for registering the binding called by afb-daemon
+ */
+PUBLIC const struct afb_binding *afbBindingV1Register(const struct afb_binding_interface *itf) {
+    afbIface= itf;
+    
+    return &binding_description;	/* returns the description of the binding */
+}
+
diff --git a/AudioLogic/AudioLogicLib.c b/AudioLogic/AudioLogicLib.c
new file mode 100644
index 0000000..ebe241c
--- /dev/null
+++ b/AudioLogic/AudioLogicLib.c
@@ -0,0 +1,89 @@
+/*
+ * 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 <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <math.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include "AudioLogicLib.h"
+static struct afb_service srvitf;
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+// this function is call after all binder are loaded and initialised
+PUBLIC int audioLogicInit (struct afb_service service) {
+    srvitf = service;
+    return 0;
+}
+
+// This callback is fired when afb_service_call for api/alsacore/subctl returns
+STATIC void alsaSubcribeCB (void *handle, int iserror, struct json_object *result) {
+	struct afb_req request = afb_req_unstore(handle);
+        struct json_object *x, *resp = NULL;
+	const char *info = NULL;
+
+	if (result) {
+	    INFO (afbIface, "result=[%s]\n", json_object_to_json_string (result));
+            if (json_object_object_get_ex(result, "request", &x) && json_object_object_get_ex(x, "info", &x))
+		info = json_object_get_string(x);
+		if (!json_object_object_get_ex(result, "response", &resp)) resp = NULL;
+	}
+        
+        // push message respond
+	if (iserror) afb_req_fail_f(request,  "Fail", info);
+	else         afb_req_success(request, resp, info);
+        
+        // free calling request
+	afb_req_unref(request);
+}
+
+// Create and subscribe to alsacore ctl events
+PUBLIC void audioLogicMonitor(struct afb_req request) {
+    
+    // save request in session as it might be used after return by callback
+    struct afb_req *handle = afb_req_store(request);
+
+    // push request to low level binding
+    if (!handle) afb_req_fail(request, "error", "out of memory");
+    else    afb_service_call(srvitf, "alsacore", "subctl", json_object_get(afb_req_json(request)), alsaSubcribeCB, handle);
+
+    // success/failure messages return from callback    
+}
+
+// Call when all bindings are loaded and ready to accept request
+PUBLIC void audioLogicGetVol(struct afb_req request) {
+   
+    afb_req_success (request, NULL, NULL);
+    return;
+    
+}
+
+PUBLIC void audioLogicSetVol(struct afb_req request) {
+   
+
+    afb_req_success (request, NULL, NULL);
+    return;
+    
+}
+
diff --git a/AudioLogic/AudioLogicLib.h b/AudioLogic/AudioLogicLib.h
new file mode 100644
index 0000000..21513fd
--- /dev/null
+++ b/AudioLogic/AudioLogicLib.h
@@ -0,0 +1,50 @@
+/*
+ * AlsaLibMapping -- provide low level interface with AUDIO lib (extracted from alsa-json-gateway code)
+ * Copyright (C) 2015,2016,2017, 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.
+ */
+
+
+// few coding convention
+typedef int BOOL;
+#ifndef PUBLIC
+  #define PUBLIC
+#endif
+#ifndef FALSE
+  #define FALSE 0
+#endif
+#ifndef TRUE
+  #define TRUE 1
+#endif
+#define STATIC    static
+ 
+#ifndef AUDIOLIBMAPPING_H
+#define AUDIOLIBMAPPING_H
+
+#include <json-c/json.h>
+#include <afb/afb-binding.h>
+#include <afb/afb-service-itf.h>
+
+
+// import from AlsaAfbBinding
+extern const struct afb_binding_interface *afbIface;
+
+// import from AlsaAfbMapping
+PUBLIC void audioLogicSetVol (struct afb_req request);
+PUBLIC void audioLogicGetVol(struct afb_req request);
+PUBLIC void audioLogicMonitor(struct afb_req request);
+PUBLIC int  audioLogicInit (struct afb_service service);
+
+#endif /* AUDIOLIBMAPPING_H */
+
diff --git a/AudioLogic/CMakeLists.txt b/AudioLogic/CMakeLists.txt
new file mode 100644
index 0000000..0b72b5c
--- /dev/null
+++ b/AudioLogic/CMakeLists.txt
@@ -0,0 +1,36 @@
+###########################################################################
+# Copyright 2015, 2016, 2017 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.
+###########################################################################
+
+
+INCLUDE_DIRECTORIES(${include_dirs})
+
+##################################################
+# AudioLogicBinding
+##################################################
+ADD_LIBRARY(audiologic-afb MODULE AudioLogicBinding.c AudioLogicLib.c)
+
+SET_TARGET_PROPERTIES(audiologic-afb PROPERTIES
+	PREFIX ""
+	LINK_FLAGS "-Wl,--version-script=${CMAKE_SOURCE_DIR}/export.map"
+)
+
+TARGET_LINK_LIBRARIES(audiologic-afb ${link_libraries})
+INSTALL(TARGETS audiologic-afb
+        LIBRARY DESTINATION ${binding_install_dir})
+
+
diff --git a/AudioLogic/README.md b/AudioLogic/README.md
new file mode 100644
index 0000000..399f905
--- /dev/null
+++ b/AudioLogic/README.md
@@ -0,0 +1,18 @@
+------------------------------------------------------------------------
+   AudioLogic High Level APIs
+------------------------------------------------------------------------
+
+Testing: (from project directory bindings)
+ * start binder:  ~/opt/bin/afb-daemon --ldpaths=./build --roothttp=htdocs
+ * connect browser on http://localhost:1234
+
+ # Subscribe event for a given board
+ http://localhost:1234/api/audio/subscribe?devid=hw:0
+
+ # Increase Volume
+ http://localhost:1234/api/audio/setvol?devid=hw:0&pcm=master&vol=50%
+
+ # Get Volume
+ http://localhost:1234/api/audio/getvol?devid=hw:0&pcm=master
+
+ 
+\ No newline at end of file