ref: 6f06d3436dafe1f697eb86ace9cbfd645f0d2439
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.
- Neither the name of Skype Limited, nor the names of specific
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this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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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