ref: 1a1736526d1421b682418c47801d967f2bdd0a70
dir: /silk/silk_API.h/
/***********************************************************************
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modification, (subject to the limitations in the disclaimer below)
are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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***********************************************************************/
#ifndef SILK_API_H
#define SILK_API_H
#include "silk_control.h"
#include "silk_typedef.h"
#include "silk_errors.h"
#include "entenc.h"
#include "entdec.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define SILK_MAX_FRAMES_PER_PACKET 3
/* Struct for TOC (Table of Contents) */
typedef struct {
SKP_int VADFlag; /* Voice activity for packet */
SKP_int VADFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Voice activity for each frame in packet */
SKP_int inbandFECFlag; /* Flag indicating if packet contains in-band FEC */
} silk_TOC_struct;
/****************************************/
/* Encoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk encoder state */
/***********************************************/
SKP_int silk_Get_Encoder_Size( /* O: Returns error code */
SKP_int32 *encSizeBytes /* O: Number of bytes in SILK encoder state */
);
/*************************/
/* Init or reset encoder */
/*************************/
SKP_int silk_InitEncoder( /* O: Returns error code */
void *encState, /* I/O: State */
silk_EncControlStruct *encStatus /* O: Encoder Status */
);
/***************************************/
/* Read control structure from encoder */
/***************************************/
SKP_int silk_QueryEncoder( /* O: Returns error code */
const void *encState, /* I: State */
silk_EncControlStruct *encStatus /* O: Encoder Status */
);
/**************************/
/* Encode frame with Silk */
/**************************/
/* Note: if prefillFlag is set, the input must contain 10 ms of audio, irrespective of what */
/* encControl->payloadSize_ms is set to */
SKP_int silk_Encode( /* O: Returns error code */
void *encState, /* I/O: State */
silk_EncControlStruct *encControl, /* I: Control status */
const SKP_int16 *samplesIn, /* I: Speech sample input vector */
SKP_int nSamplesIn, /* I: Number of samples in input vector */
ec_enc *psRangeEnc, /* I/O Compressor data structure */
SKP_int32 *nBytesOut, /* I/O: Number of bytes in payload (input: Max bytes) */
const SKP_int prefillFlag /* I: Flag to indicate prefilling buffers no coding */
);
/****************************************/
/* Decoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk decoder state */
/***********************************************/
SKP_int silk_Get_Decoder_Size( /* O: Returns error code */
SKP_int32 *decSizeBytes /* O: Number of bytes in SILK decoder state */
);
/*************************/
/* Init or Reset decoder */
/*************************/
SKP_int silk_InitDecoder( /* O: Returns error code */
void *decState /* I/O: State */
);
/******************/
/* Decode a frame */
/******************/
SKP_int silk_Decode( /* O: Returns error code */
void* decState, /* I/O: State */
silk_DecControlStruct* decControl, /* I/O: Control Structure */
SKP_int lostFlag, /* I: 0: no loss, 1 loss, 2 decode fec */
SKP_int newPacketFlag, /* I: Indicates first decoder call for this packet */
ec_dec *psRangeDec, /* I/O Compressor data structure */
SKP_int16 *samplesOut, /* O: Decoded output speech vector */
SKP_int32 *nSamplesOut /* O: Number of samples decoded */
);
/**************************************/
/* Get table of contents for a packet */
/**************************************/
SKP_int silk_get_TOC(
const SKP_uint8 *payload, /* I Payload data */
const SKP_int nBytesIn, /* I: Number of input bytes */
const SKP_int nFramesPerPayload, /* I: Number of SILK frames per payload */
silk_TOC_struct *Silk_TOC /* O: Type of content */
);
#ifdef __cplusplus
}
#endif
#endif