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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"
// 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,
};
// 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 = "Master Playback Volume"}},
{ .tag = PCM_Playback_Volume, .ctl =
{ .name = "PCM Playback Volume"}},
{ .tag = PCM_Playback_Switch, .ctl =
{ .name = "Master Playback Switch"}},
{ .tag = Capture_Volume, .ctl =
{ .name = "Capture Volume"}},
{ .tag = Master_Playback_Volume, .cb =
{.callback = volumeRamp, .handle = &volRampMaster}, .info = "ramp volume linearly according to current ramp setting",
.ctl =
{.numid = 0, .type = SND_CTL_ELEM_TYPE_INTEGER, .count = 1, .minval = 0, .maxval = 100, .step = 1, .name = "Hal-VolRamp"}},
{ .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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