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-rw-r--r--HAL-afb/Scarlett-Focusrite/CMakeLists.txt42
-rw-r--r--HAL-afb/Scarlett-Focusrite/ScarlettUsbHAL.c74
2 files changed, 116 insertions, 0 deletions
diff --git a/HAL-afb/Scarlett-Focusrite/CMakeLists.txt b/HAL-afb/Scarlett-Focusrite/CMakeLists.txt
new file mode 100644
index 0000000..a2ca912
--- /dev/null
+++ b/HAL-afb/Scarlett-Focusrite/CMakeLists.txt
@@ -0,0 +1,42 @@
+###########################################################################
+# 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.
+###########################################################################
+
+
+# Add target to project dependency list
+PROJECT_TARGET_ADD(hal-scalett-usb)
+
+ # Define project Targets
+ ADD_LIBRARY(hal-scalett-usb MODULE ScarlettUsbHAL.c)
+
+ # Binder exposes a unique public entry point
+ SET_TARGET_PROPERTIES(hal-scalett-usb PROPERTIES
+ PREFIX "afb-"
+ LABELS "BINDING"
+ LINK_FLAGS ${BINDINGS_LINK_FLAG}
+ OUTPUT_NAME ${TARGET_NAME}
+ )
+
+ # Library dependencies (include updates automatically)
+ TARGET_LINK_LIBRARIES(hal-scalett-usb
+ hal-interface
+ audio-interface
+ )
+
+ # installation directory
+ INSTALL(TARGETS hal-scalett-usb
+ LIBRARY DESTINATION ${BINDINGS_INSTALL_DIR}) \ No newline at end of file
diff --git a/HAL-afb/Scarlett-Focusrite/ScarlettUsbHAL.c b/HAL-afb/Scarlett-Focusrite/ScarlettUsbHAL.c
new file mode 100644
index 0000000..1ff5320
--- /dev/null
+++ b/HAL-afb/Scarlett-Focusrite/ScarlettUsbHAL.c
@@ -0,0 +1,74 @@
+/*
+ * 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) {
+ static int powerStatus=0;
+
+ if (! powerStatus) {
+ powerStatus = 1;
+ AFB_DEBUG ("Power Set to On");
+ } else {
+ powerStatus = 0;
+ AFB_DEBUG ("Power Set to Off");
+ }
+
+ return NULL;
+}
+
+// Map HAL hight sndctl with Alsa numid and optionally with a custom callback for non Alsa supported functionalities.
+STATIC alsaHalMapT alsaHalMap[]= {
+ { .alsa={.control=Master_Playback_Volume,.numid=16, .name="Master-Vol" , .values=1,.minval=0,.maxval= 87 ,.step=0}, .info= "Master Playback Volume" },
+ { .alsa={.control=PCM_Playback_Volume ,.numid=27, .name="Play-Vol" , .values=2,.minval=0,.maxval= 255,.step=0}, .info= "PCM Playback Volume" },
+ { .alsa={.control=PCM_Playback_Switch ,.numid=17, .name="Play-Switch" , .values=1,.minval=0,.maxval= 1 ,.step=0}, .info= "Master Playback Switch" },
+ { .alsa={.control=Capture_Volume ,.numid=12, .name="Capt-vol" , .values=2,.minval=0,.maxval= 31 ,.step=0}, .info= "Capture Volume" },
+ { .alsa={.control=Master_OnOff_Switch ,.numid=99, .name="Power-Switch"}, .cb={.callback=MasterOnOff, .handle=NULL}, .info= "OnOff Global Switch"},
+ { .alsa={.numid=0}, .cb={.callback=NULL, .handle=NULL}} /* marker for end of the array */
+} ;
+
+// HAL sound card mapping info
+STATIC alsaHalSndCardT alsaHalSndCard = {
+ .name = "Scarlett 18i8 USB", // WARNING: name MUST match with 'aplay -l'
+ .info = "Hardware Abstraction Layer for Scarlett Focusrite USB professional music 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 = "scarlett-usb",
+ .init = sndServiceInit,
+ .verbs = halServiceApi,
+ .onevent = halServiceEvent,
+};