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/**
******************************************************************************
* @file opus_interface_stm.h
* @author MCD Application Team
* @brief This file contains definitions for the opus interface.
******************************************************************************
* @attention
*
* Copyright (c) 2018-2021 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __OPUS_INTERFACE_STM_H
#define __OPUS_INTERFACE_STM_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "opus.h"
#include "opus_private.h"
#include "ble_gatt_aci.h"
/**
* @brief Return states values.
*/
typedef enum
{
OPUS_IF_SUCCESS = 0x00, /*!< Success.*/
OPUS_IF_ERROR = 0x01, /*!< Error.*/
OPUS_IF_INVALID_PARAM = 0x02, /*!< Invalid Opus parameters.*/
OPUS_IF_ENC_NOT_CONFIG = 0x03, /*!< BlueVoiceOPUS encoder not configured.*/
OPUS_IF_DEC_NOT_CONFIG = 0x04, /*!< BlueVoiceOPUS decoder not configured.*/
} OPUS_IF_Status;
/**
* @brief Opus encoder configuration parameters.
*/
typedef struct
{
float ms_frame; /*!< audio frame size [ms] (2.5, 5, 10, 20, 40, 60).*/
uint32_t sample_freq; /*!< Audio sampling frequency [Hz] (8000, 12000, 16000, 24000, 48000).*/
uint8_t channels; /*!< Number of audio input channels. */
int application; /*!< Specifies the application type (OPUS_APPLICATION_VOIP, OPUS_APPLICATION_AUDIO, OPUS_APPLICATION_RESTRICTED_LOWDELAY) see opus_define.h. */
uint32_t bitrate; /*!< Specifies the choosen encoding bitrate [bps] (from 6000 to 510000). */
uint8_t complexity; /*!< Specifies the choosen encoding complexity (from 0 to 10). */
} OPUS_IF_ENC_ConfigTypeDef;
/**
* @brief Opus decoder configuration parameters.
*/
typedef struct
{
float ms_frame; /*!< audio frame size [ms] (2.5, 5, 10, 20, 40, 60). */
uint32_t sample_freq; /*!< Audio sampling frequency [Hz] (8000, 12000, 16000, 24000, 48000). */
uint8_t channels; /*!< Number of audio input channels */
uint32_t bitrate; /*!< Specifies the choosen encoding bitrate [bps] (from 6000 to 510000). */
} OPUS_IF_DEC_ConfigTypeDef;
/**
* @brief Encoder initialization.
* @param Opus encoder configuration.
* @param opus_err: @ref opus_errorcodes
* @retval OPUS_IF_Status: Value indicating success or error (in case of error check opus_err).
*/
OPUS_IF_Status OPUS_IF_ENC_Init(OPUS_IF_ENC_ConfigTypeDef *ENC_configOpus, int *opus_err);
/**
* @brief Encoder deinit function.
* @param None.
* @retval None.
*/
void OPUS_IF_ENC_Deinit(void);
/**
* @brief This function returns if the the Opus Encoder is configured.
* @param None.
* @retval uint8_t: 1 if the Encoder is configured 0 otherwise.
*/
uint8_t OPUS_IF_ENC_IsConfigured(void);
/**
* @brief Decoder initialization.
* @param Opus decoder configuration.
* @param opus_err: @ref opus_errorcodes
* @retval OPUS_IF_Status: Value indicating success or error (in case of error check opus_err).
*/
OPUS_IF_Status OPUS_IF_DEC_Init(OPUS_IF_DEC_ConfigTypeDef *DEC_configOpus, int *opus_err);
/**
* @brief Decoder deinit function.
* @param None.
* @retval None.
*/
void OPUS_IF_DEC_Deinit(void);
/**
* @brief This function returns if the the Opus Decoder is configured.
* @param None.
* @retval uint8_t: 1 if the Decoder is configured 0 otherwise.
*/
uint8_t OPUS_IF_DEC_IsConfigured(void);
/**
* @brief Set bitrate to be used for encoding
* @param bitrate: Indicate the bitrate in bit per second.
* @param opus_err: @ref opus_errorcodes.
* @retval OPUS_IF_Status: Value indicating success or error (in case of error check opus_err).
*/
OPUS_IF_Status OPUS_IF_ENC_Set_Bitrate(OPUS_IF_ENC_ConfigTypeDef *ENC_configOpus, int bitrate, int *opus_err);
/**
* @brief Set constant bitrate option for the encoder.
* @param None.
* @retval OPUS_IF_Status: Value indicating success or error.
*/
OPUS_IF_Status OPUS_IF_ENC_Set_CBR(void);
/**
* @brief Set variable bitrate option for the encoder.
* @param None.
* @retval OPUS_IF_Status: Value indicating success or error.
*/
OPUS_IF_Status OPUS_IF_ENC_Set_VBR(void);
/**
* @brief Set complexity to be used for encoding
* @param complexity: value from o to 10.
* @param opus_err: @ref opus_errorcodes.
* @retval OPUS_IF_Status: Value indicating success or error (in case of error check opus_err).
*/
OPUS_IF_Status OPUS_IF_ENC_Set_Complexity(OPUS_IF_ENC_ConfigTypeDef *ENC_configOpus, int complexity, int *opus_err);
/**
* @brief Force the encoder to use only SILK
* @param None.
* @retval OPUS_IF_Status: Value indicating success or error.
*/
OPUS_IF_Status OPUS_IF_ENC_Force_SILKmode(void);
/**
* @brief Force the encoder to use only CELT.
* @param None.
* @retval OPUS_IF_Status: Value indicating success or error.
*/
OPUS_IF_Status OPUS_IF_ENC_Force_CELTmode(void);
/**
* @brief Encoding functions.
* @param buf_in: pointer to the PCM buffer to be encoded.
* @param buf_out: pointer to the Encoded buffer.
* @retval Number of bytes in case of success, 0 viceversa.
*/
int OPUS_IF_ENC_Encode(uint8_t * buf_in, uint8_t * buf_out);
/**
* @brief Decoding functions.
* @param buf_in: pointer to the Encoded buffer to be decoded.
* @param len: length of the buffer in.
* @param buf_out: pointer to the Decoded buffer.
* @retval Number of decoded samples or @ref opus_errorcodes.
*/
int OPUS_IF_DEC_Decode(uint8_t * buf_in, uint32_t len, uint8_t * buf_out);
#ifdef __cplusplus
}
#endif
#endif /* __OPUS_INTERFACE_STM_H */
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