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Diffstat (limited to '4a-hal/4a-hal-controllers/4a-hal-controllers-value-handler.c')
| -rw-r--r-- | 4a-hal/4a-hal-controllers/4a-hal-controllers-value-handler.c | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/4a-hal/4a-hal-controllers/4a-hal-controllers-value-handler.c b/4a-hal/4a-hal-controllers/4a-hal-controllers-value-handler.c deleted file mode 100644 index 4e9b56d..0000000 --- a/4a-hal/4a-hal-controllers/4a-hal-controllers-value-handler.c +++ /dev/null @@ -1,355 +0,0 @@ -/* - * Copyright (C) 2018 "IoT.bzh" - * Author Jonathan Aillet <jonathan.aillet@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 - -#include <stdio.h> -#include <string.h> - -#include <limits.h> -#include <math.h> - -#include <wrap-json.h> - -#include <afb/afb-binding.h> - -#include "4a-hal-controllers-value-handler.h" -#include "4a-hal-controllers-alsacore-link.h" - -/******************************************************************************* - * Simple conversion value to/from percentage functions * - ******************************************************************************/ - -int HalCtlsConvertValueToPercentage(double val, double min, double max) -{ - double range; - - range = max - min; - if(range <= 0) - return -INT_MAX; - - val -= min; - - return (int) round(val / range * 100); -} - -int HalCtlsConvertPercentageToValue(int percentage, int min, int max) -{ - int range; - - range = max - min; - if(range <= 0) - return -INT_MAX; - - return (int) round((double) percentage * (double) range * 0.01 + (double) min); -} - -/******************************************************************************* - * Convert json object from percentage to value * - ******************************************************************************/ - -int HalCtlsConvertJsonValueForIntegerControl(afb_api_t apiHandle, - struct CtlHalAlsaCtlProperties *alsaCtlProperties, - json_object *toConvertJ, - json_object **ConvertedJ, - enum ConversionType requestedConversion) -{ - int initialValue, convertedValue; - - if(! json_object_is_type(toConvertJ, json_type_int)) { - AFB_API_ERROR(apiHandle, - "Can't convert json value, unrecognized json format (must be an integer) : '%s'", - json_object_get_string(toConvertJ)); - return -1; - } - - initialValue = json_object_get_int(toConvertJ); - - switch(requestedConversion) { - case CONVERSION_NORMALIZED_TO_ALSACORE: - if(initialValue < 0 || initialValue > 100) { - AFB_API_ERROR(apiHandle, - "Cannot convert '%i' value, value should be between 0 and 100 ('%s')", - initialValue, - json_object_get_string(toConvertJ)); - return -2; - } - - convertedValue = HalCtlsConvertPercentageToValue(initialValue, - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - - if(convertedValue == -INT_MAX) { - AFB_API_ERROR(apiHandle, - "Didn't succeed to convert %i (using min %i et max %i)", - initialValue, - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - return -3; - } - - if(alsaCtlProperties->step) { - // Round value to the nearest step - convertedValue = (int) round((double) convertedValue / (double) alsaCtlProperties->step); - convertedValue *= alsaCtlProperties->step; - } - break; - - case CONVERSION_ALSACORE_TO_NORMALIZED: - convertedValue = HalCtlsConvertValueToPercentage(initialValue, - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - - if(convertedValue == -INT_MAX) { - AFB_API_ERROR(apiHandle, - "Didn't succeed to convert %i (using min %i et max %i)", - initialValue, - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - return -4; - } - - break; - - default: - AFB_API_ERROR(apiHandle, - "Can't convert '%i' value, unrecognized conversion type : '%i'", - initialValue, - (int) requestedConversion); - *ConvertedJ = NULL; - return -5; - } - - *ConvertedJ = json_object_new_int(convertedValue); - - return 0; -} - -int HalCtlsConvertJsonValueForBooleanControl(afb_api_t apiHandle, - struct CtlHalAlsaCtlProperties *alsaCtlProperties, - json_object *toConvertJ, - json_object **ConvertedJ, - enum ConversionType requestedConversion) -{ - int initialValue; - - switch(json_object_get_type(toConvertJ)) { - case json_type_int: - initialValue = json_object_get_int(toConvertJ); - break; - - case json_type_boolean: - initialValue = json_object_get_boolean(toConvertJ); - break; - - default: - AFB_API_ERROR(apiHandle, - "Can't convert json value, unrecognized format (must be an integer or a boolean) : '%s'", - json_object_get_string(toConvertJ)); - return -1; - } - - if(initialValue < 0 || initialValue > 1) { - AFB_API_ERROR(apiHandle, - "Cannot convert '%i' value, value should be 0 or 1 ('%s')", - initialValue, - json_object_get_string(toConvertJ)); - return -2; - } - - switch(requestedConversion) { - case CONVERSION_NORMALIZED_TO_ALSACORE: - *ConvertedJ = json_object_new_int(initialValue); - break; - - case CONVERSION_ALSACORE_TO_NORMALIZED: - *ConvertedJ = json_object_new_boolean(initialValue); - break; - - default: - AFB_API_ERROR(apiHandle, - "Can't convert '%i' value, unrecognized conversion type : '%i'", - initialValue, - (int) requestedConversion); - *ConvertedJ = NULL; - return -3; - } - - return 0; -} - -int HalCtlsConvertJsonValues(afb_api_t apiHandle, - struct CtlHalAlsaCtlProperties *alsaCtlProperties, - json_object *toConvertJ, - json_object **ConvertedJ, - enum ConversionType requestedConversion) -{ - int conversionError = 0, idx, count; - - json_type toConvertType; - json_object *toConvertObjectJ, *convertedValueJ, *convertedArrayJ; - - *ConvertedJ = NULL; - - toConvertType = json_object_get_type(toConvertJ); - count = (toConvertType == json_type_array) ? (int) json_object_array_length(toConvertJ) : 1; - - convertedArrayJ = json_object_new_array(); - - for(idx = 0; idx < count; idx++) { - if(toConvertType == json_type_array) - toConvertObjectJ = json_object_array_get_idx(toConvertJ, idx); - else - toConvertObjectJ = toConvertJ; - - switch(alsaCtlProperties->type) { - case SND_CTL_ELEM_TYPE_INTEGER: - case SND_CTL_ELEM_TYPE_INTEGER64: - if((conversionError = HalCtlsConvertJsonValueForIntegerControl(apiHandle, - alsaCtlProperties, - toConvertObjectJ, - &convertedValueJ, - requestedConversion))) { - AFB_API_ERROR(apiHandle, - "Error %i happened in when trying to convert index %i for integer control ('%s')", - conversionError, - idx, - json_object_get_string(toConvertObjectJ)); - json_object_put(convertedArrayJ); - return -(idx + 1); - } - break; - - case SND_CTL_ELEM_TYPE_BOOLEAN: - if((conversionError = HalCtlsConvertJsonValueForBooleanControl(apiHandle, - alsaCtlProperties, - toConvertObjectJ, - &convertedValueJ, - requestedConversion))) { - AFB_API_ERROR(apiHandle, - "Error %i happened in when trying to convert index %i for boolean control ('%s')", - conversionError, - idx, - json_object_get_string(toConvertObjectJ)); - json_object_put(convertedArrayJ); - return -(idx + 1); - } - break; - - default: - AFB_API_ERROR(apiHandle, - "Conversion not handle for the alsa control type %i", - (int) alsaCtlProperties->type); - json_object_put(convertedArrayJ); - return -(idx + 1); - } - - json_object_array_put_idx(convertedArrayJ, idx, convertedValueJ); - } - - *ConvertedJ = convertedArrayJ; - - return 0; -} - -int HalCtlsChangePreviousValuesUsingJson(afb_api_t apiHandle, - struct CtlHalAlsaCtlProperties *alsaCtlProperties, - json_object *requestedPercentageVariationJ, - json_object *previousControlValuesJ, - json_object **ChangedJ) -{ - int requestedPercentageVariation, requestedVariation, toChangeValue, changedValue, idx, count; - - char *requestedPercentageVariationString, *conversionEnd; - - json_object *toChangeObjectJ, *changedArrayJ; - - *ChangedJ = NULL; - - requestedPercentageVariationString = (char *) json_object_get_string(requestedPercentageVariationJ); - - requestedPercentageVariation = (int) strtol(requestedPercentageVariationString, &conversionEnd, 10); - if(conversionEnd == requestedPercentageVariationString) { - AFB_API_ERROR(apiHandle, - "Tried to increase/decrease an integer control \ - but string sent in json is not a increase/decrease string : '%s'", - json_object_get_string(requestedPercentageVariationJ)); - return -1; - } - - if(alsaCtlProperties->type != SND_CTL_ELEM_TYPE_INTEGER && - alsaCtlProperties->type != SND_CTL_ELEM_TYPE_INTEGER64) { - AFB_API_ERROR(apiHandle, - "Tried to increase/decrease values on a incompatible \ - control type (%i), control type must be an integer", - alsaCtlProperties->type); - return -2; - } - - if(requestedPercentageVariation < -100 || requestedPercentageVariation > 100) { - AFB_API_ERROR(apiHandle, - "Tried to increase/decrease values but specified change is \ - not a valid percentage, it should be between -100 and 100"); - return -3; - } - - requestedVariation = HalCtlsConvertPercentageToValue((int) abs(requestedPercentageVariation), - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - - if(requestedVariation == -INT_MAX) { - AFB_API_ERROR(apiHandle, - "Didn't succeed to convert %i (using min %i et max %i)", - requestedPercentageVariation, - alsaCtlProperties->minval, - alsaCtlProperties->maxval); - return -4; - } - - if(requestedPercentageVariation < 0) - requestedVariation = -requestedVariation; - - count = (int) json_object_array_length(previousControlValuesJ); - - changedArrayJ = json_object_new_array(); - - for(idx = 0; idx < count; idx++) { - toChangeObjectJ = json_object_array_get_idx(previousControlValuesJ, idx); - - if(! json_object_is_type(toChangeObjectJ, json_type_int)) { - AFB_API_ERROR(apiHandle, - "Current json object %s is not an integer", - json_object_get_string(toChangeObjectJ)); - return -(10 + idx); - } - - toChangeValue = json_object_get_int(toChangeObjectJ); - - if((toChangeValue + requestedVariation) < alsaCtlProperties->minval) - changedValue = alsaCtlProperties->minval; - else if((toChangeValue + requestedVariation) > alsaCtlProperties->maxval) - changedValue = alsaCtlProperties->maxval; - else - changedValue = toChangeValue + requestedVariation; - - json_object_array_put_idx(changedArrayJ, idx, json_object_new_int(changedValue)); - } - - *ChangedJ = changedArrayJ; - - return 0; -}
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