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/*
* Copyright (C) 2017, Microchip Technology Inc. and its subsidiaries.
* Author Tobias Jahnke
*
* 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.
*
*/
#define _GNU_SOURCE
#include "hal-interface.h"
#include "audio-interface.h"
static int master_volume;
static int master_switch;
static int pcm_volume;
void unicens_volume_cb(halCtlsEnumT tag, alsaHalCtlMapT *control, void* handle, json_object *valuesJ) {
AFB_NOTICE("UNICENS Volume tag=%d, vol=%d, min=%d, max=%d", tag, control->value, control->minval, control->maxval);
}
/* declare ALSA mixer controls */
STATIC alsaHalMapT alsaHalMap[]= {
{ .tag=Master_Playback_Volume, .cb={.callback=unicens_volume_cb, .handle=&master_volume}, .info="Sets master playback volume",
.ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=1, .minval=0, .maxval=100, .step=1, .value=50, .name="Master Playback Volume"}
},
{ .tag=Master_OnOff_Switch, .cb={.callback=unicens_volume_cb, .handle=&master_switch}, .info="Sets master playback switch",
.ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_BOOLEAN, .count=1, .minval=0, .maxval=1, .step=1, .value=1, .name="Master Playback Switch"}
},
{ .tag=PCM_Playback_Volume, .cb={.callback=unicens_volume_cb, .handle=&pcm_volume}, .info="Sets PCM playback volume",
.ctl={.numid=0, .type=SND_CTL_ELEM_TYPE_INTEGER, .count=6, .minval=0, .maxval=100, .step=1, .value=100, .name="PCM Playback Volume"}
},
{ .tag=EndHalCrlTag} /* marker for end of the array */
} ;
/* HAL sound card mapping info */
STATIC alsaHalSndCardT alsaHalSndCard = {
.name = "Microchip MOST:1", /* WARNING: name MUST match with 'aplay -l' */
.info = "HAL for MICROCHIP MOST sound card controlled by UNICENS binding",
.ctls = alsaHalMap,
.volumeCB = NULL, /* use default volume normalization function */
};
STATIC int sndServiceInit () {
int err;
AFB_DEBUG ("Initializing HAL-MOST-UNICENS-BINDING");
err = halServiceInit (afbBindingV2.api, &alsaHalSndCard);
return err;
}
/* API prefix should be unique for each snd card */
PUBLIC const struct afb_binding_v2 afbBindingV2 = {
.api = "hal-most-unicens",
.init = sndServiceInit,
.verbs = halServiceApi,
.onevent = halServiceEvent,
};
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