Late Evening Commit

5 files changed, 328 insertions, 0 deletions

diff --git a/AlsaSound/HardAbsLayer/CMakeLists.txt b/AlsaSound/HardAbsLayer/CMakeLists.txt
new file mode 100644
index 0000000..e24a9d9
--- /dev/null
+++ b/AlsaSound/HardAbsLayer/CMakeLists.txt
@@ -0,0 +1,23 @@
+###########################################################################
+# 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.
+###########################################################################
+
+PROJECT(hadware-abstraction-layer C)
+
+
+ADD_SUBDIRECTORY(IntelHda)
+
diff --git a/AlsaSound/HardAbsLayer/IntelHda/CMakeLists.txt b/AlsaSound/HardAbsLayer/IntelHda/CMakeLists.txt
new file mode 100644
index 0000000..0d3f344
--- /dev/null
+++ b/AlsaSound/HardAbsLayer/IntelHda/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(${include_dirs})
+
+##################################################
+# Inte-HDA sound card Hardware Abstraction Layer
+##################################################
+ADD_LIBRARY(intel-hda-hal MODULE IntelHdaBinding.c IntelHdaLib.c)
+
+SET_TARGET_PROPERTIES(intel-hda-hal PROPERTIES
+	PREFIX ""
+	LINK_FLAGS "-Wl,--version-script=${CMAKE_SOURCE_DIR}/export.map"
+)
+
+TARGET_LINK_LIBRARIES(intel-hda-hal ${link_libraries})
+INSTALL(TARGETS intel-hda-hal
+        LIBRARY DESTINATION ${binding_install_dir})
+
+
diff --git a/AlsaSound/HardAbsLayer/IntelHda/IntelHdaBinding.c b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaBinding.c
new file mode 100644
index 0000000..0452314
--- /dev/null
+++ b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaBinding.c
@@ -0,0 +1,82 @@
+/*
+ * 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 "IntelHdaLib.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= intelHdaSetVol,    .info= "Set Volume" },
+  { .name= "getvolume",  .session= AFB_SESSION_NONE, .callback= intelHdaGetVol,    .info= "Get Volume" },
+  { .name= "subscribe",  .session= AFB_SESSION_NONE, .callback= intelHdaSubscribe, .info= "Subscribe AudioBinding 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= "intel-hda",
+    .info= "Hardware Abstraction Layer for IntelHDA sound card",
+    .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 (intelHdaInit(service, binding_description.v1.prefix)); 
+};
+
+/*
+ * 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/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.c b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.c
new file mode 100644
index 0000000..ad4fcf4
--- /dev/null
+++ b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.c
@@ -0,0 +1,138 @@
+/*
+ * 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.
+ * 
+ * reference: 
+ *   amixer contents; amixer controls;
+ *   http://www.tldp.org/HOWTO/Alsa-sound-6.html 
+ */
+#define _GNU_SOURCE  // needed for vasprintf
+#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 "IntelHdaLib.h"
+#include "AlsaMixerHal.h"
+
+static struct afb_service srvitf;
+
+// Normalise Intel-HDA numid    
+static AlsaHalMapT  alsaCtlsMap[]= { // check with amixer -D hw:xx controls; amixer -D "hw:3" cget numid=xx
+ /* ACTION(enum) NUMID(int) IFACE(enum) VALUES(int) MinVal(int) MaxVal(int) Step(int) ACL=READ|WRITE|RW INFO=comment */
+  { .action=Master_Playback_Volume, .numid=16, .group=OUTVOL, .values=1, .minval=0, .maxval= 87 , .step=0, .acl=RW, .info= "Master Playback Volume" },
+  { .action=PCM_Playback_Volume   , .numid=27, .group=PCMVOL, .values=2, .minval=0, .maxval= 255, .step=0, .acl=RW, .info= "PCM Playback Volume" },
+  { .action=PCM_Playback_Switch   , .numid=17, .group=SWITCH, .values=1, .minval=0, .maxval= 1  , .step=0, .acl=RW, .info= "Master Playback Switch" },
+  { .action=Capture_Volume        , .numid=12, .group=INVOL , .values=2, .minval=0, .maxval= 31 , .step=0, .acl=RW, .info= "Capture Volume" },
+  { .numid=0  } /* marker for end of the array */
+} ;
+
+// Warning: Longname is used to locate board on the system
+static AlsaHalSndT alsaSndCard  = {
+    .longname= "HDA Intel PCH",
+    .info    = "Hardware Abstraction Layer for IntelHDA sound card",
+    .ctls    = alsaCtlsMap,
+};
+
+
+// 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 intelHdaMonitor(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    
+}
+
+// Subscribe to AudioBinding events
+PUBLIC void intelHdaSubscribe (struct afb_req request) {
+    const char *devid = afb_req_value(request, "devid");
+    if (devid == NULL) {
+        afb_req_fail_f (request, "devid-missing", "devid=hw:xxx missing");
+    }
+    
+}
+
+
+// Call when all bindings are loaded and ready to accept request
+PUBLIC void intelHdaGetVol(struct afb_req request) {
+   
+    // Should call here Hardware Alsa Abstraction Layer for corresponding Sound Card
+    afb_req_success (request, NULL, NULL);
+    return;
+    
+}
+
+PUBLIC void intelHdaSetVol(struct afb_req request) {
+    const char *arg;
+    char *pcm;
+    
+    arg = afb_req_value(request, "vol");
+    if (arg == NULL) {
+        afb_req_fail_f (request, "argument-missing", "vol=[0,100] missing");
+        goto ExitOnError;
+    }
+    
+    arg = afb_req_value(request, "pcm");
+    if (arg == NULL) pcm="Master";
+   
+    // Should call here Hardware Alsa Abstraction Layer for corresponding Sound Card
+    afb_req_success (request, NULL, NULL);
+    return;
+    
+  ExitOnError:
+    return;
+    
+}
+
+
+// this function is call after all binder are loaded and initialised
+PUBLIC int  intelHdaInit (struct afb_service service, const char *cardname) {
+    srvitf = service;
+    
+    // API prefix is used as sndcard halname
+    alsaSndCard.halname= cardname;
+    return 0;
+}
\ No newline at end of file
diff --git a/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.h b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.h
new file mode 100644
index 0000000..edf9474
--- /dev/null
+++ b/AlsaSound/HardAbsLayer/IntelHda/IntelHdaLib.h
@@ -0,0 +1,49 @@
+/*
+ * 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 intelHdaSetVol (struct afb_req request);
+PUBLIC void intelHdaGetVol(struct afb_req request);
+PUBLIC void intelHdaSubscribe(struct afb_req request);
+PUBLIC int  intelHdaInit (struct afb_service service, const char *cardname);
+
+#endif /* AUDIOLIBMAPPING_H */
+