int16_t WebRtcIlbcfix_Decode30Ms(IlbcDecoderInstance* iLBCdec_inst,
const uint8_t* encoded,
int16_t len,
int16_t* decoded,
int16_t* speechType)
{
int 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) {
WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl],
(const uint16_t*)&encoded
[2 * i * ((IlbcDecoder*)iLBCdec_inst)->no_of_words],
(IlbcDecoder*)iLBCdec_inst, 1);
i++;
}
/* iLBC does not support VAD/CNG yet */
*speechType=1;
return(i*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
static int ilbc_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
ILBCDecContext *s = avctx->priv_data;
AVFrame *frame = data;
int ret;
if (s->decoder.no_of_bytes > buf_size) {
av_log(avctx, AV_LOG_ERROR, "iLBC frame too short (%u, should be %u)\n",
buf_size, s->decoder.no_of_bytes);
return AVERROR_INVALIDDATA;
}
frame->nb_samples = s->decoder.blockl;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
WebRtcIlbcfix_DecodeImpl((WebRtc_Word16*) frame->data[0],
(const WebRtc_UWord16*) buf, &s->decoder, 1);
*got_frame_ptr = 1;
return s->decoder.no_of_bytes;
}
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_DecodePlc(iLBC_decinst_t *iLBCdec_inst, WebRtc_Word16 *decoded, WebRtc_Word16 noOfLostFrames) {
int i;
WebRtc_UWord16 dummy;
for (i=0;i<noOfLostFrames;i++) {
/* call decoder */
WebRtcIlbcfix_DecodeImpl(&decoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl], &dummy, (iLBC_Dec_Inst_t*) iLBCdec_inst, 0);
}
return (noOfLostFrames*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl);
}
int16_t WebRtcIlbcfix_DecodePlc(IlbcDecoderInstance* iLBCdec_inst,
int16_t* decoded,
int16_t noOfLostFrames) {
int i;
uint16_t dummy;
for (i=0;i<noOfLostFrames;i++) {
/* call decoder */
WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl], &dummy,
(IlbcDecoder*)iLBCdec_inst, 0);
}
return (noOfLostFrames*((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.
RTC_CHECK(WebRtcIlbcfix_DecodeImpl(
&decoded[i * ((IlbcDecoder*)iLBCdec_inst)->blockl], &dummy,
(IlbcDecoder*)iLBCdec_inst, 0));
}
return (noOfLostFrames*((IlbcDecoder*)iLBCdec_inst)->blockl);
}
WebRtc_Word16 WebRtcIlbcfix_Decode30Ms(iLBC_decinst_t *iLBCdec_inst,
const WebRtc_Word16 *encoded,
WebRtc_Word16 len,
WebRtc_Word16 *decoded,
WebRtc_Word16 *speechType)
{
int i=0;
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 {
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 WebRtc_UWord16*) &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);
}
