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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"
#include "audio-common.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,
};
STATIC halVolRampT volRampMultimedia= {
.slave = PCM_Volume_Multimedia,
.delay = 100*1000, // ramping delay in us
.stepDown= 2,
.stepUp = 1,
};
STATIC halVolRampT volRampNavigation= {
.slave = PCM_Volume_Navigation,
.delay = 100*1000, // ramping delay in us
.stepDown= 4,
.stepUp = 2,
};
// Default Values for MasterVolume Ramping
STATIC halVolRampT volRampEmergency= {
.slave = PCM_Volume_Emergency,
.delay = 50*1000, // ramping delay in us
.stepDown= 6,
.stepUp = 3,
};
// Map HAL hight sndctl with Alsa numid and optionally with a custom callback for non Alsa supported functionalities.
STATIC alsaHalMapT alsaHalMap[]= {
{ .tag=Master_Playback_Volume, . ctl={.name="PCM Playback Volume", .value=50 } },
{ .tag=PCM_Playback_Volume , .ctl={.name="PCM Playback Volume", .value=50 } },
{ .tag=PCM_Playback_Switch , .ctl={.name="PCM Playback Switch", .value=01 } },
{ .tag=Capture_Volume , .ctl={.name="Mic Capture Volume" } },
// Sound card does not have hardware volume ramping
{ .tag=Master_Playback_Ramp , .cb={.callback=volumeRamp, .handle=&volRampMaster}, .info="ramp volume linearly according to current ramp setting",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .name="Rampup Master"}
},
// Implement Rampup Volume for Virtual Channels
{ .tag=Navigation_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampNavigation}, .info="RampUp Navigation Volume",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Playback Navigation Ramp", .value=80 }
},
{ .tag=Emergency_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampEmergency}, .info="Rampup Emergency Volume",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER,.name="Playback Emergency Ramp", .value=80 }
},
// Sound Card does not support hardware channel volume mixer (note softvol default range 0-256)
{ .tag=Multimedia_Playback_Volume, .cb={.callback=volumeRamp, .handle=&volRampMultimedia}, .info="Ramp-up Multimedia Volume",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .name="Playback Multimedia Ramp", .value=80 }
},
{ .tag=PCM_Volume_Multimedia, .info="Playback Multimedia Softvol",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255, .value=200, .name="Playback Multimedia"}
},
{ .tag=PCM_Volume_Navigation, .info="Playback Navigation Softvol",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255,.value=200, .name="Playback Navigation"}
},
{ .tag=PCM_Volume_Emergency, .info="Playback Emergency Softvol",
.ctl={.numid=CTL_AUTO, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=2, .maxval=255, .value=200, .name="Playback Emergency"}
},
{ .tag=EndHalCrlTag} /* marker for end of the array */
} ;
// HAL sound card mapping info
STATIC alsaHalSndCardT alsaHalSndCard = {
.name = "HDA Intel PCH", // WARNING: name MUST match with 'aplay -l'
.info = "Hardware Abstraction Layer for IntelHDA sound card",
.ctls = alsaHalMap,
};
STATIC int sndServiceInit() {
int err;
AFB_DEBUG("IntelHal 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 = "intel-hda",
.init = sndServiceInit,
.verbs = halServiceApi,
.onevent = halServiceEvent,
};
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