/*
* 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",.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=Entertainment_Playback_Volume ,
.ctl={.name="Entertainment_Volume",.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=Notification_Playback_Volume ,
.ctl={.name="Notification_Volume",.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=Communication_Playback_Volume ,
.ctl={.name="Communications_Volume", .numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=Warning_Playback_Volume ,
.ctl={.name="Warning_Volume",.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204}
},
{ .tag=System_Playback_Volume ,
.ctl={.name="System_Volume", .numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=Startup_Playback_Volume ,
.ctl={.name="Startup_Volume", .numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204}
},
{ .tag=Shutdown_Playback_Volume ,
.ctl={.name="Shutdown_Volume",.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.count=2, .maxval=255, .value=204 }
},
{ .tag=EndHalCrlTag} /* marker for end of the array */
} ;
// HAL sound card mapping info
STATIC alsaHalSndCardT alsaHalSndCard = {
.name = "USB-Audio", // Match any USB audio sound card
.info = "Hardware Abstraction Layer for Generic USB Audio 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 = "usb-audio",
.init = sndServiceInit,
.verbs = halServiceApi,
.onevent = halServiceEvent,
};