/***********************************************************************
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are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice,
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- Redistributions in binary form must reproduce the above copyright
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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***********************************************************************/
#ifndef SKP_SILK_SDK_API_H
#define SKP_SILK_SDK_API_H
#include "SKP_Silk_control.h"
#include "SKP_Silk_typedef.h"
#include "SKP_Silk_errors.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define SILK_MAX_FRAMES_PER_PACKET 5
/* Struct for TOC (Table of Contents) */
typedef struct {
SKP_int framesInPacket; /* Number of 20 ms frames in packet */
SKP_int fs_kHz; /* Sampling frequency in packet */
SKP_int inbandLBRR; /* Does packet contain LBRR information */
SKP_int corrupt; /* Packet is corrupt */
SKP_int vadFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* VAD flag for each frame in packet */
SKP_int sigtypeFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Signal type for each frame in packet */
} SKP_Silk_TOC_struct;
/****************************************/
/* Encoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk encoder state */
/***********************************************/
SKP_int SKP_Silk_SDK_Get_Encoder_Size(
SKP_int32 *encSizeBytes /* O: Number of bytes in SILK encoder state */
);
/*************************/
/* Init or reset encoder */
/*************************/
SKP_int SKP_Silk_SDK_InitEncoder(
void *encState, /* I/O: State */
SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */
);
/***************************************/
/* Read control structure from encoder */
/***************************************/
SKP_int SKP_Silk_SDK_QueryEncoder(
const void *encState, /* I: State */
SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */
);
/**************************/
/* Encode frame with Silk */
/**************************/
SKP_int SKP_Silk_SDK_Encode(
void *encState, /* I/O: State */
const SKP_SILK_SDK_EncControlStruct *encControl, /* I: Control status */
const SKP_int16 *samplesIn, /* I: Speech sample input vector */
SKP_int nSamplesIn, /* I: Number of samples in input vector */
SKP_uint8 *outData, /* O: Encoded output vector */
SKP_int16 *nBytesOut /* I/O: Number of bytes in outData (input: Max bytes) */
);
/****************************************/
/* Decoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk decoder state */
/***********************************************/
SKP_int SKP_Silk_SDK_Get_Decoder_Size(
SKP_int32 *decSizeBytes /* O: Number of bytes in SILK decoder state */
);
/*************************/
/* Init or Reset decoder */
/*************************/
SKP_int SKP_Silk_SDK_InitDecoder(
void *decState /* I/O: State */
);
/******************/
/* Decode a frame */
/******************/
SKP_int SKP_Silk_SDK_Decode(
void* decState, /* I/O: State */
SKP_SILK_SDK_DecControlStruct* decControl, /* I/O: Control Structure */
SKP_int lostFlag, /* I: 0: no loss, 1 loss */
const SKP_uint8 *inData, /* I: Encoded input vector */
const SKP_int nBytesIn, /* I: Number of input bytes */
SKP_int16 *samplesOut, /* O: Decoded output speech vector */
SKP_int16 *nSamplesOut /* I/O: Number of samples (vector/decoded) */
);
/***************************************************************/
/* Find Low Bit Rate Redundancy (LBRR) information in a packet */
/***************************************************************/
void SKP_Silk_SDK_search_for_LBRR(
const SKP_uint8 *inData, /* I: Encoded input vector */
const SKP_int nBytesIn, /* I: Number of input Bytes */
SKP_int lost_offset, /* I: Offset from lost packet */
SKP_uint8 *LBRRData, /* O: LBRR payload */
SKP_int16 *nLBRRBytes /* O: Number of LBRR Bytes */
);
/**************************************/
/* Get table of contents for a packet */
/**************************************/
void SKP_Silk_SDK_get_TOC(
const SKP_uint8 *inData, /* I: Encoded input vector */
const SKP_int nBytesIn, /* I: Number of input bytes */
SKP_Silk_TOC_struct *Silk_TOC /* O: Table of contents */
);
/**************************/
/* Get the version number */
/**************************/
/* Return a pointer to string specifying the version */
const char *SKP_Silk_SDK_get_version(void);
#ifdef __cplusplus
}
#endif
#endif
