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/*
* Copyright (C) 2018 "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.
*
*/
#define _GNU_SOURCE // needed for vasprintf
#include "alsa-softmixer.h"
#include <string.h>
// Set stream volume control in %
#define VOL_CONTROL_MAX 100
#define VOL_CONTROL_MIN 0
#define VOL_CONTROL_STEP 1
PUBLIC AlsaVolRampT *ApiRampGetByUid(SoftMixerT *mixer, const char *uid) {
AlsaVolRampT *ramp = NULL;
cds_list_for_each_entry(ramp, &mixer->ramps.list, list) {
if (!strcasecmp(ramp->uid, uid))
return ramp;
}
return NULL;
}
STATIC AlsaVolRampT *AttachOneRamp(SoftMixerT *mixer, const char *uid, json_object *rampJ) {
const char * rampUid;
AlsaVolRampT *ramp = calloc(1, sizeof (AlsaVolRampT));
if (ramp == NULL) {
SOFTMIXER_NOMEM(mixer->api);
goto fail;
}
CDS_INIT_LIST_HEAD(&ramp->list);
int error = wrap_json_unpack(rampJ, "{ss,si,si,si !}"
, "uid", &rampUid
, "delay", &ramp->delay
, "up", &ramp->stepUp
, "down", &ramp->stepDown
);
if (error) {
AFB_ApiError(mixer->api,
"%s mixer=%s hal=%s error=%s json=%s",
__func__, mixer->uid, uid, wrap_json_get_error_string(error), json_object_get_string(rampJ));
goto fail_ramp;
}
ramp->delay = ramp->delay * 1000; // move from ms to us
ramp->uid = strdup(rampUid);
if (ramp->uid == NULL) {
SOFTMIXER_NOMEM(mixer->api);
goto fail_ramp;
}
return ramp;
fail_ramp:
free(ramp);
fail:
return NULL;
}
static void rampDestroy(SoftMixerT * mixer, void * arg) {
AlsaVolRampT * ramp = (AlsaVolRampT*) arg;
AFB_ApiDebug(mixer->api, "%s... %s not implemented", __func__, ramp->uid);
}
static AlsaVolRampT * rampCreate(SoftMixerT * mixer, const char * uid, json_object *argsJ) {
AlsaVolRampT * newRamp = AttachOneRamp(mixer, uid, argsJ);
if (!newRamp) {
goto fail;
}
mixer->nbRamps++;
cds_list_add_tail(&newRamp->list, &mixer->ramps.list);
AlsaMixerTransactionObjectAdd(mixer->transaction, newRamp, rampDestroy);
fail:
return newRamp;
}
PUBLIC int ApiRampAttach(SoftMixerT *mixer, AFB_ReqT request, const char * uid, json_object *argsJ) {
if (mixer->nbRamps >= mixer->max.ramps) {
AFB_ReqFailF(request, "too-small", "mixer=%s hal=%s max ramp=%d", mixer->uid, uid, mixer->max.ramps);
goto fail;
}
AlsaVolRampT * newRamp = NULL;
switch (json_object_get_type(argsJ)) {
long count;
case json_type_object:
newRamp = rampCreate(mixer, uid, argsJ);
if (!newRamp) {
AFB_ReqFailF(request, "bad-ramp", "mixer=%s hal=%s invalid ramp= %s", mixer->uid, uid, json_object_get_string(argsJ));
goto fail;
}
break;
case json_type_array:
count = json_object_array_length(argsJ);
if (count > (mixer->max.ramps - mixer->nbRamps)) {
AFB_ReqFailF(request, "too-small", "mixer=%s hal=%s max ramp=%d", mixer->uid, uid, mixer->max.ramps);
goto fail;
}
for (int idx = 0; idx < count; idx++) {
json_object *streamAudioJ = json_object_array_get_idx(argsJ, idx);
newRamp = rampCreate(mixer, uid, streamAudioJ);
if (!newRamp) {
AFB_ReqFailF(request, "bad-ramp", "mixer=%s hal=%s invalid ramp= %s", mixer->uid, uid, json_object_get_string(argsJ));
goto fail;
}
}
break;
default:
AFB_ReqFailF(request, "invalid-syntax", "mixer=%s hal=%s ramps invalid argsJ= %s", mixer->uid, uid, json_object_get_string(argsJ));
goto fail;
}
return 0;
fail:
return -1;
}
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