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-rw-r--r--USB-Device/UsbDeviceHAL.c170
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diff --git a/USB-Device/UsbDeviceHAL.c b/USB-Device/UsbDeviceHAL.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"
+
+// Define few private tag for not standard functions
+#define PCM_Volume_Multimedia 1000
+#define PCM_Volume_Navigation 1001
+#define PCM_Volume_Emergency 1002
+
+// Default Values for MasterVolume Ramping
+STATIC halVolRampT volRampMaster= {
+ .mode = RAMP_VOL_NORMAL,
+ .slave = Master_Playback_Volume,
+ .delay = 100*1000, // ramping delay in us
+ .stepDown=1,
+ .stepUp =1,
+};
+
+//Solvol Ramping Value can be customize by Audio Role and Hardwar card
+STATIC halVolRampT volRampGuidance= {
+ .slave = Guidance_Playback_Volume,
+ .delay = 50*1000, // ramping delay in us
+ .stepDown= 2,
+ .stepUp = 4,
+};
+
+STATIC halVolRampT volRampCommunication= {
+ .slave = Communication_Playback_Volume,
+ .delay = 50*1000, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 4,
+};
+
+STATIC halVolRampT volRampEntertainment= {
+ .slave = Entertainment_Playback_Volume,
+ .delay = 100*1000, // ramping delay in us
+ .stepDown= 4,
+ .stepUp = 2,
+};
+
+STATIC halVolRampT volRampNotification= {
+ .slave = Notification_Playback_Volume,
+ .delay = 50*1000, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 4,
+};
+
+STATIC halVolRampT volRampWarning= {
+ .slave = Warning_Playback_Volume,
+ .delay = 10*1000, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 10,
+};
+
+STATIC halVolRampT volRampSystem= {
+ .slave = System_Playback_Volume,
+ .delay = 20*100, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 10,
+};
+
+
+STATIC halVolRampT volRampStartup= {
+ .slave = Startup_Playback_Volume,
+ .delay = 20*100, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 10,
+};
+
+STATIC halVolRampT volRampShutdown= {
+ .slave = Shutdown_Playback_Volume,
+ .delay = 20*100, // ramping delay in us
+ .stepDown= 6,
+ .stepUp = 10,
+};
+
+
+
+// Map HAL hight sndctl with Alsa numid and optionally with a custom callback for non Alsa supported functionalities.
+STATIC alsaHalMapT alsaHalMap[]= {
+
+ // Sound card does not have hardware volume ramping
+ { .tag=Master_Playback_Ramp , .cb={.callback=volumeRamp, .handle=&volRampMaster}, .info="Master Playback Volume Ramp",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .name="Master_Ramp"}
+ },
+
+ // Implement Rampup Volume for Virtual Channels (0-100)
+ { .tag=Guidance_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampGuidance}, .info="RampUp Guidance Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Guidance_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Entertainment_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampEntertainment}, .info="Rampup Entertainment Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Entertainment_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Notification_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampNotification}, .info="Ramp-up Notification Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Notification_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Communication_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampCommunication}, .info="RampUp Communication Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Communication_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Warning_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampWarning}, .info="Ramp-up Warning Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Warning_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+
+ { .tag=System_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampSystem}, .info="Ramp-up System Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="System_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Startup_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampStartup}, .info="Ramp-up Startup Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Statup_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+ { .tag=Shutdown_Playback_Ramp, .cb={.callback=volumeRamp, .handle=&volRampShutdown}, .info="Ramp-up Shutdown Volume",
+ .ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Shutdown_Ramp", .minval=0, .maxval=100, .step=1, .value=80 }
+ },
+
+ // Bind with existing ones created by ALSA configuration (and linked to softvol) [0-255]
+ { .tag=Guidance_Playback_Volume , .ctl={.name="Guidance_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Entertainment_Playback_Volume , .ctl={.name="Entertainment_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Notification_Playback_Volume , .ctl={.name="Notification_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Communication_Playback_Volume , .ctl={.name="Communications_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Warning_Playback_Volume , .ctl={.name="Warning_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=System_Playback_Volume , .ctl={.name="System_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Startup_Playback_Volume , .ctl={.name="Startup_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ { .tag=Shutdown_Playback_Volume , .ctl={.name="Shutdown_Volume", .minval=0, .maxval=255, .step=1, .value=204 } },
+ // Could have similar controls for input side
+
+ { .tag=EndHalCrlTag} /* marker for end of the array */
+} ;
+
+// HAL sound card mapping info
+STATIC alsaHalSndCardT alsaHalSndCard = {
+ .name = "USB Audio Device", // WARNING: name MUST match with 'aplay -l'
+ .info = "Hardware Abstraction Layer for IntelHDA sound card",
+ .ctls = alsaHalMap,
+};
+
+STATIC int sndServiceInit() {
+ int err;
+ AFB_DEBUG("USB-Audio HAL Binding 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 = "usbaudio",
+ .init = sndServiceInit,
+ .verbs = halServiceApi,
+ .onevent = halServiceEvent,
+};