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wav_decoder.h
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wav_decoder.h
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/*
* ESPRESSIF MIT License
*
* Copyright (c) 2020 <ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.>
*
* Permission is hereby granted for use on all ESPRESSIF SYSTEMS products, in which case,
* it is free of charge, to any person obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef _WAV_DECODER_H_
#define _WAV_DECODER_H_
#include "esp_err.h"
#include "audio_element.h"
#ifdef __cplusplus
extern "C" {
#endif
#define WAV_DECODER_TASK_STACK (4 * 1024)
#define WAV_DECODER_TASK_CORE (0)
#define WAV_DECODER_TASK_PRIO (5)
#define WAV_DECODER_RINGBUFFER_SIZE (8 * 1024)
#define DEFAULT_WAV_DECODER_CONFIG() { \
.out_rb_size = WAV_DECODER_RINGBUFFER_SIZE, \
.task_stack = WAV_DECODER_TASK_STACK, \
.task_core = WAV_DECODER_TASK_CORE, \
.task_prio = WAV_DECODER_TASK_PRIO, \
.stack_in_ext = true, \
}
/**
* brief WAV Decoder configurations
*/
typedef struct {
int out_rb_size; /*!< Size of output ringbuffer */
int task_stack; /*!< Task stack size */
int task_core; /*!< Task running in core (0 or 1) */
int task_prio; /*!< Task priority (based on freeRTOS priority) */
bool stack_in_ext; /*!< Try to allocate stack in external memory */
} wav_decoder_cfg_t;
/**
* @brief Create an Audio Element handle to decode incoming WAV data
*
* @param config The configuration
*
* @return The audio element handle
*/
audio_element_handle_t wav_decoder_init(wav_decoder_cfg_t *config);
#ifdef __cplusplus
}
#endif
#endif