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/*
* Copyright (C) 2018, Microchip Technology Inc. and its subsidiaries, "IoT.bzh".
* Author Tobias Jahnke
* Author Jonathan Aillet
* Contrib Fulup Ar Foll
*
* 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 <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <time.h>
#include <assert.h>
#include <wrap-json.h>
#include <ctl-plugin.h>
#include "wrap_volume.h"
#include "wrap_unicens.h"
#include "libmostvolume.h"
#define MAX_PCM_CHANNELS 6
static int wrap_volume_service_timeout_cb(sd_event_source* source,
uint64_t timer __attribute__((__unused__)),
void *userdata __attribute__((__unused__)))
{
uint8_t ret;
sd_event_source_unref(source);
if((ret = lib_most_volume_service()))
AFB_ApiError(unicensHalApiHandle, "lib_most_volume_service returns %d", ret);
return 0;
}
static void wrap_volume_service_cb(uint16_t timeout)
{
uint64_t usec;
sd_event_now(AFB_GetEventLoop(unicensHalApiHandle), CLOCK_BOOTTIME, &usec);
sd_event_add_time(AFB_GetEventLoop(unicensHalApiHandle),
NULL,
CLOCK_MONOTONIC,
usec + (timeout*1000),
250,
wrap_volume_service_timeout_cb,
NULL);
}
/* Retrieves a new value adapted to a new maximum value. Minimum value is
* always zero. */
static int wrap_volume_calculate(int value, int max_old, int max_new)
{
if(value > max_old)
value = max_old;
value = (value * max_new) / max_old; /* calculate range: 0..255 */
assert(value <= max_new);
return value;
}
extern int wrap_volume_init(void)
{
uint8_t ret = 0;
lib_most_volume_init_t mv_init;
mv_init.writei2c_cb = &wrap_ucs_i2cwrite;
mv_init.service_cb = wrap_volume_service_cb;
ret = lib_most_volume_init(&mv_init);
return -ret;
}
extern int wrap_volume_master(AFB_ApiT apiHandle, int volume)
{
int ret;
if((ret = lib_most_volume_set(LIB_MOST_VOLUME_MASTER,
(uint8_t) wrap_volume_calculate(volume, 100, 255)))) {
AFB_ApiError(apiHandle, "%s: volume library not ready.", __func__);
}
return -ret;
}
extern int wrap_volume_pcm(AFB_ApiT apiHandle, int *volume_ptr, int volume_sz)
{
int cnt, new_value, ret = 0;
assert(volume_ptr != NULL);
assert(volume_sz <= MAX_PCM_CHANNELS);
for(cnt = 0; cnt < volume_sz; cnt ++) {
new_value = wrap_volume_calculate(volume_ptr[cnt], 100, 255);
if((ret = lib_most_volume_set((enum lib_most_volume_channel_t) cnt, (uint8_t) new_value))) {
AFB_ApiError(apiHandle, "%s: volume library not ready.", __func__);
break;
}
}
return -ret;
}
extern int wrap_volume_node_avail(AFB_ApiT apiHandle, int node, int available)
{
int ret;
if((ret = lib_most_volume_node_available((uint16_t) node, (uint8_t) available)))
AFB_ApiError(apiHandle, "%s: volume library not ready.", __func__);
return -ret;
}
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