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authorfulup <fulup.arfoll@iot.bzh>2017-07-30 21:11:00 +0200
committerfulup <fulup.arfoll@iot.bzh>2017-07-30 21:11:00 +0200
commit94a12b24d1712573607b78cd78f47e998a0323d4 (patch)
treee7407a2aca62fc25bfb95300f94db95664d4aeb0 /HAL-afb/HAL-interface/hal-volmap.c
parentda4f9b32ad32593aec2635da47077f0c05da71be (diff)
First Dev version with Volume Ramping
Diffstat (limited to 'HAL-afb/HAL-interface/hal-volmap.c')
-rw-r--r--HAL-afb/HAL-interface/hal-volmap.c147
1 files changed, 0 insertions, 147 deletions
diff --git a/HAL-afb/HAL-interface/hal-volmap.c b/HAL-afb/HAL-interface/hal-volmap.c
deleted file mode 100644
index 2b619fd..0000000
--- a/HAL-afb/HAL-interface/hal-volmap.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * 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.
- *
- * references:
- * alsa-util/amixer.c + alsa-lib/simple.c
- */
-
-#define _GNU_SOURCE // needed for vasprintf
-#include <math.h>
-#include "hal-interface.h"
-
-
-typedef enum {
- NORMALIZE_NONE=0,
- NORMALIZE_DB_LINEAR,
- NORMALIZE_DB_MATH,
- NORMALIZE_LINEAR,
-} enumRandeModeDB_T;
-
-
-// Return Value express from 0-100%
-STATIC int dbNormalizeVal (enumRandeModeDB_T normaliseMode, const alsaHalDBscaleT *dbscale, int value) {
- double normalized, min_norm;
-
- // To get real DB from TLV DB values should be divided by 100
- switch (normaliseMode) {
- case NORMALIZE_DB_LINEAR:
- normalized = ((double)(value-dbscale->min)/(double)(dbscale->max-dbscale->min));
- break;
-
- case NORMALIZE_DB_MATH:
- normalized = exp10((double)(value - dbscale->max) / 6000.0);
- if (dbscale->min != SND_CTL_TLV_DB_GAIN_MUTE) {
- min_norm = exp10((double)(dbscale->min - dbscale->max) / 20);
- normalized = (normalized - min_norm) / (1 - min_norm);
- }
-
- break;
-
- default:
- normalized=0;
- }
-
- return (int)round(normalized*100);
-}
-
-// HAL normalise volume values to 0-100%
-PUBLIC struct json_object *SetGetNormaliseVolumes(ActionSetGetT action, const alsaHalCtlMapT *halCtls, struct json_object *valuesJ) {
- enumRandeModeDB_T useNormalizeDB;
- int length;
-
- // If Integer look for DBscale
- if (halCtls->type == SND_CTL_ELEM_TYPE_INTEGER) {
-
- // If not valid db_scale let's use raw_scale
- if (!halCtls->dbscale || (halCtls->dbscale->min >= halCtls->dbscale->max)) {
-
- // dbscale is invalid let's try raw range
- if (halCtls->minval >= halCtls->maxval) goto ExitOnError;
-
- // Use Raw Scale Model
- useNormalizeDB= NORMALIZE_LINEAR;
-
- } else { // db_scale looks OK let's use it
- if ((halCtls->dbscale->max - halCtls->dbscale->min) <= MAX_LINEAR_DB_SCALE * 100) useNormalizeDB= NORMALIZE_DB_LINEAR;
- else useNormalizeDB = NORMALIZE_LINEAR; // Fulup not sure how to handle this useNormalizeDB=NORMALIZE_DB_MATH;
- }
- } else useNormalizeDB= NORMALIZE_NONE;
-
-
- // loop on values to normalise
- enum json_type jtype=json_object_get_type(valuesJ);
- if (jtype == json_type_array) length = json_object_array_length(valuesJ);
- else length = 1;
-
- json_object *normalisedJ= json_object_new_array();
- for (int idx=0; idx < length; idx++) {
- int value;
-
- if (jtype == json_type_array) {
- json_object *valueJ = json_object_array_get_idx (valuesJ, idx);
- value = json_object_get_int(valueJ);
- } else {
- value = json_object_get_int(valuesJ);
- }
-
- // If Integer scale to 0/100
- if (halCtls->type == SND_CTL_ELEM_TYPE_INTEGER) {
-
- switch (action) {
-
- case ACTION_GET:
- switch (useNormalizeDB) {
- case NORMALIZE_LINEAR:
- value = 100* (value - halCtls->minval) / (halCtls->maxval - halCtls->minval);
- break;
- case NORMALIZE_DB_MATH: //ToBeDone
- value = dbNormalizeVal (useNormalizeDB, halCtls->dbscale, value);
- break;
- case NORMALIZE_NONE:
- default:
- value = value;
- }
- break;
-
- case ACTION_SET:
- switch (useNormalizeDB) {
- case NORMALIZE_LINEAR:
- value = (value * (halCtls->maxval - halCtls->minval))/100;
- break;
- case NORMALIZE_DB_MATH: //ToBeDone
- value = dbNormalizeVal (useNormalizeDB, halCtls->dbscale, value);
- break;
- case NORMALIZE_NONE:
- default:
- value = value;
- }
- break;
-
- default:
- AFB_NOTICE ("SetGetNormaliseVolumes: invalid action value=%d", (int)action);
- goto ExitOnError;
- }
- }
-
- json_object_array_add(normalisedJ, json_object_new_int(value));
- }
-
- return (normalisedJ);
-
- ExitOnError:
- return NULL;
-}
- \ No newline at end of file