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/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/******************************************************************
iLBC Speech Coder ANSI-C Source Code
iLBCInterface.c
******************************************************************/
#include "modules/audio_coding/codecs/ilbc/ilbc.h"
#include <stdlib.h>
#include "modules/audio_coding/codecs/ilbc/decode.h"
#include "modules/audio_coding/codecs/ilbc/defines.h"
#include "modules/audio_coding/codecs/ilbc/encode.h"
#include "modules/audio_coding/codecs/ilbc/init_decode.h"
#include "modules/audio_coding/codecs/ilbc/init_encode.h"
#include "rtc_base/checks.h"
int16_t WebRtcIlbcfix_EncoderAssign(IlbcEncoderInstance** iLBC_encinst,
int16_t* ILBCENC_inst_Addr,
int16_t* size) {
*iLBC_encinst=(IlbcEncoderInstance*)ILBCENC_inst_Addr;
*size=sizeof(IlbcEncoder)/sizeof(int16_t);
if (*iLBC_encinst!=NULL) {
return(0);
} else {
return(-1);
}
}
int16_t WebRtcIlbcfix_DecoderAssign(IlbcDecoderInstance** iLBC_decinst,
int16_t* ILBCDEC_inst_Addr,
int16_t* size) {
*iLBC_decinst=(IlbcDecoderInstance*)ILBCDEC_inst_Addr;
*size=sizeof(IlbcDecoder)/sizeof(int16_t);
if (*iLBC_decinst!=NULL) {
return(0);
} else {
return(-1);
}
}
int16_t WebRtcIlbcfix_EncoderCreate(IlbcEncoderInstance **iLBC_encinst) {
*iLBC_encinst=(IlbcEncoderInstance*)malloc(sizeof(IlbcEncoder));
if (*iLBC_encinst!=NULL) {
return(0);
} else {
return(-1);
}
}
int16_t WebRtcIlbcfix_DecoderCreate(IlbcDecoderInstance **iLBC_decinst) {
*iLBC_decinst=(IlbcDecoderInstance*)malloc(sizeof(IlbcDecoder));
if (*iLBC_decinst!=NULL) {
return(0);
} else {
return(-1);
}
}
int16_t WebRtcIlbcfix_EncoderFree(IlbcEncoderInstance *iLBC_encinst) {
free(iLBC_encinst);
return(0);
}
int16_t WebRtcIlbcfix_DecoderFree(IlbcDecoderInstance *iLBC_decinst) {
free(iLBC_decinst);
return(0);
}
int16_t WebRtcIlbcfix_EncoderInit(IlbcEncoderInstance* iLBCenc_inst,
int16_t mode) {
if ((mode==20)||(mode==30)) {
WebRtcIlbcfix_InitEncode((IlbcEncoder*) iLBCenc_inst, mode);
return(0);
} else {
return(-1);
}
}
int WebRtcIlbcfix_Encode(IlbcEncoderInstance* iLBCenc_inst,
const int16_t* speechIn,
size_t len,
uint8_t* encoded) {
size_t pos = 0;
size_t encpos = 0;
if ((len != ((IlbcEncoder*)iLBCenc_inst)->blockl) &&
#ifdef SPLIT_10MS
(len != 80) &&
#endif
(len != 2*((IlbcEncoder*)iLBCenc_inst)->blockl) &&
(len != 3*((IlbcEncoder*)iLBCenc_inst)->blockl))
{
/* A maximum of 3 frames/packet is allowed */
return(-1);
} else {
/* call encoder */
while (pos<len) {
WebRtcIlbcfix_EncodeImpl((uint16_t*)&encoded[2 * encpos], &speechIn[pos],
(IlbcEncoder*)iLBCenc_inst);
#ifdef SPLIT_10MS
pos += 80;
if(((IlbcEncoder*)iLBCenc_inst)->section == 0)
#else
pos += ((IlbcEncoder*)iLBCenc_inst)->blockl;
#endif
encpos += ((IlbcEncoder*)iLBCenc_inst)->no_of_words;
}
return (int)(encpos*2);
}
}
int16_t WebRtcIlbcfix_DecoderInit(IlbcDecoderInstance* iLBCdec_inst,
int16_t mode) {
if ((mode==20)||(mode==30)) {
WebRtcIlbcfix_InitDecode((IlbcDecoder*) iLBCdec_inst, mode, 1);
return(0);
} else {
return(-1);
}
}
void WebRtcIlbcfix_DecoderInit20Ms(IlbcDecoderInstance* iLBCdec_inst) {
WebRtcIlbcfix_InitDecode((IlbcDecoder*) iLBCdec_inst, 20, 1);
}
void WebRtcIlbcfix_Decoderinit30Ms(IlbcDecoderInstance* iLBCdec_inst) {
WebRtcIlbcfix_InitDecode((IlbcDecoder*) iLBCdec_inst, 30, 1);
}
int WebRtcIlbcfix_Decode(IlbcDecoderInstance* iLBCdec_inst,
const uint8_t* encoded,
size_t len,
int16_t* decoded,
int16_t* speechType)
{
size_t i=0;
/* Allow for automatic switching between the frame sizes
(although you do get some discontinuity) */
if ((len==((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==2*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==3*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)) {
/* ok, do nothing */
} else {
/* Test if the mode has changed */
if (((IlbcDecoder*)iLBCdec_inst)->mode==20) {
if ((len==NO_OF_BYTES_30MS)||
(len==2*NO_OF_BYTES_30MS)||
(len==3*NO_OF_BYTES_30MS)) {
WebRtcIlbcfix_InitDecode(
((IlbcDecoder*)iLBCdec_inst), 30,
((IlbcDecoder*)iLBCdec_inst)->use_enhancer);
} else {
/* Unsupported frame length */
return(-1);
}
} else {
if ((len==NO_OF_BYTES_20MS)||
(len==2*NO_OF_BYTES_20MS)||
(len==3*NO_OF_BYTES_20MS)) {
WebRtcIlbcfix_InitDecode(
((IlbcDecoder*)iLBCdec_inst), 20,
((IlbcDecoder*)iLBCdec_inst)->use_enhancer);
} else {
/* Unsupported frame length */
return(-1);
}
}
}
while ((i*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)<len) {
if (WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl],
(const uint16_t*)&encoded
[2 * i * ((IlbcDecoder*)iLBCdec_inst)->no_of_words],
(IlbcDecoder*)iLBCdec_inst, 1) == -1)
return -1;
i++;
}
/* iLBC does not support VAD/CNG yet */
*speechType=1;
return (int)(i*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
int WebRtcIlbcfix_Decode20Ms(IlbcDecoderInstance* iLBCdec_inst,
const uint8_t* encoded,
size_t len,
int16_t* decoded,
int16_t* speechType)
{
size_t i=0;
if ((len==((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==2*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==3*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)) {
/* ok, do nothing */
} else {
return(-1);
}
while ((i*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)<len) {
if (!WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl],
(const uint16_t*)&encoded
[2 * i * ((IlbcDecoder*)iLBCdec_inst)->no_of_words],
(IlbcDecoder*)iLBCdec_inst, 1))
return -1;
i++;
}
/* iLBC does not support VAD/CNG yet */
*speechType=1;
return (int)(i*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
int WebRtcIlbcfix_Decode30Ms(IlbcDecoderInstance* iLBCdec_inst,
const uint8_t* encoded,
size_t len,
int16_t* decoded,
int16_t* speechType)
{
size_t i=0;
if ((len==((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==2*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)||
(len==3*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)) {
/* ok, do nothing */
} else {
return(-1);
}
while ((i*((IlbcDecoder*)iLBCdec_inst)->no_of_bytes)<len) {
if (!WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl],
(const uint16_t*)&encoded
[2 * i * ((IlbcDecoder*)iLBCdec_inst)->no_of_words],
(IlbcDecoder*)iLBCdec_inst, 1))
return -1;
i++;
}
/* iLBC does not support VAD/CNG yet */
*speechType=1;
return (int)(i*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
size_t WebRtcIlbcfix_DecodePlc(IlbcDecoderInstance* iLBCdec_inst,
int16_t* decoded,
size_t noOfLostFrames) {
size_t i;
uint16_t dummy;
for (i=0;i<noOfLostFrames;i++) {
// PLC decoding shouldn't fail, because there is no external input data
// that can be bad.
int result = WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl], &dummy,
(IlbcDecoder*)iLBCdec_inst, 0);
RTC_CHECK_EQ(result, 0);
}
return (noOfLostFrames*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
size_t WebRtcIlbcfix_NetEqPlc(IlbcDecoderInstance* iLBCdec_inst,
int16_t* decoded,
size_t noOfLostFrames) {
/* Two input parameters not used, but needed for function pointers in NetEQ */
(void)(decoded = NULL);
(void)(noOfLostFrames = 0);
WebRtcSpl_MemSetW16(((IlbcDecoder*)iLBCdec_inst)->enh_buf, 0, ENH_BUFL);
((IlbcDecoder*)iLBCdec_inst)->prev_enh_pl = 2;
return (0);
}
void WebRtcIlbcfix_version(char *version)
{
strcpy((char*)version, "1.1.1");
}