int16_t WebRtcIlbcfix_Decode(iLBC_Dec_Inst_t * iLBCdec_inst,
const int16_t * encoded,
int16_t len,
int16_t * decoded,
int16_t * speechType)
{
int i = 0;
/* Allow for automatic switching between the frame sizes
(although you do get some discontinuity) */
if ((len == ((iLBC_Dec_Inst_t *) iLBCdec_inst)->no_of_bytes) ||
(len == 2 * ((iLBC_Dec_Inst_t *) iLBCdec_inst)->no_of_bytes) ||
(len == 3 * ((iLBC_Dec_Inst_t *) iLBCdec_inst)->no_of_bytes)) {
/* ok, do nothing */
} else {
/* Test if the mode has changed */
if (((iLBC_Dec_Inst_t *) iLBCdec_inst)->mode == 20) {
if ((len == NO_OF_BYTES_30MS) ||
(len == 2 * NO_OF_BYTES_30MS) ||
(len == 3 * NO_OF_BYTES_30MS)) {
WebRtcIlbcfix_InitDecode(((iLBC_Dec_Inst_t *)
iLBCdec_inst), 30,
((iLBC_Dec_Inst_t *)
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(((iLBC_Dec_Inst_t *)
iLBCdec_inst), 20,
((iLBC_Dec_Inst_t *)
iLBCdec_inst)->
use_enhancer);
} else {
/* Unsupported frame length */
return (-1);
}
}
}
while ((i * ((iLBC_Dec_Inst_t *) iLBCdec_inst)->no_of_bytes) < len) {
WebRtcIlbcfix_DecodeImpl(&decoded
[i *
((iLBC_Dec_Inst_t *) iLBCdec_inst)->
blockl],
(const uint16_t *)&encoded[i *
((iLBC_Dec_Inst_t *) iLBCdec_inst)->no_of_words], (iLBC_Dec_Inst_t *) iLBCdec_inst, 1);
i++;
}
/* iLBC does not support VAD/CNG yet */
*speechType = 1;
return (i * ((iLBC_Dec_Inst_t *) iLBCdec_inst)->blockl);
}
WebRtc_Word16 WebRtcIlbcfix_DecoderInit(iLBC_decinst_t *iLBCdec_inst, WebRtc_Word16 mode) {
if ((mode==20)||(mode==30)) {
WebRtcIlbcfix_InitDecode((iLBC_Dec_Inst_t*) iLBCdec_inst, mode, 1);
return(0);
} else {
return(-1);
}
}
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);
}
}
static av_cold int ilbc_decode_init(AVCodecContext *avctx)
{
ILBCDecContext *s = avctx->priv_data;
int mode;
if ((mode = get_mode(avctx)) < 0) {
av_log(avctx, AV_LOG_ERROR, "iLBC frame mode not indicated\n");
return AVERROR(EINVAL);
}
WebRtcIlbcfix_InitDecode(&s->decoder, mode, s->enhance);
avctx->channels = 1;
avctx->channel_layout = AV_CH_LAYOUT_MONO;
avctx->sample_rate = 8000;
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
return 0;
}
int16_t WebRtcIlbcfix_Decoderinit30Ms(IlbcDecoderInstance *iLBCdec_inst) {
WebRtcIlbcfix_InitDecode((IlbcDecoder*) iLBCdec_inst, 30, 1);
return(0);
}
void WebRtcIlbcfix_Decoderinit30Ms(IlbcDecoderInstance* iLBCdec_inst) {
WebRtcIlbcfix_InitDecode((IlbcDecoder*) iLBCdec_inst, 30, 1);
}
WebRtc_Word16 WebRtcIlbcfix_Decoderinit30Ms(iLBC_decinst_t *iLBCdec_inst) {
WebRtcIlbcfix_InitDecode((iLBC_Dec_Inst_t*) iLBCdec_inst, 30, 1);
return(0);
}