int ff_aac_ac3_parse(AVCodecParserContext *s1,
AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
AACAC3ParseContext *s = s1->priv_data;
ParseContext *pc = &s->pc;
int len, i;
int new_frame_start;
int got_frame = 0;
if ((s1->flags & PARSER_FLAG_SKIP && s->parse_full) || avctx->extradata_size) {
s->remaining_size = 0;
s1->flags |= PARSER_FLAG_COMPLETE_FRAMES;
s1->duration = -1;
if (s1->flags & PARSER_FLAG_ONCE) {
got_frame = 1;
i = buf_size;
goto skip_sync;
} else {
*poutbuf = buf;
*poutbuf_size = buf_size;
return buf_size;
}
}
get_next:
i=END_NOT_FOUND;
if(s->remaining_size <= buf_size){
if(s->remaining_size && !s->need_next_header){
i= s->remaining_size;
s->remaining_size = 0;
}else{ //we need a header first
len=0;
for(i=s->remaining_size; i<buf_size; i++){
s->state = (s->state<<8) + buf[i];
if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start)))
break;
}
if(len<=0){
i=END_NOT_FOUND;
}else{
got_frame = 1;
s->state=0;
i-= s->header_size -1;
s->remaining_size = len;
if(!new_frame_start || pc->index+i<=0){
s->remaining_size += i;
goto get_next;
}
}
}
}
if(ff_combine_frame(pc, i, &buf, &buf_size)<0){
s->remaining_size -= FFMIN(s->remaining_size, buf_size);
*poutbuf = NULL;
*poutbuf_size = 0;
return buf_size;
}
skip_sync:
*poutbuf = buf;
*poutbuf_size = buf_size;
/* update codec info */
if(s->codec_id)
avctx->codec_id = s->codec_id;
if (s->parse_full && s1->flags & PARSER_FLAG_ONCE) {
if (!s->parse_full(s1, avctx, buf, buf_size))
s1->flags &= ~PARSER_FLAG_ONCE;
}
if (got_frame) {
if (avctx->codec_id != AV_CODEC_ID_AAC) {
avctx->sample_rate = s->sample_rate;
avctx->channels = s->channels;
avctx->channel_layout = s->channel_layout;
s1->duration = s->samples;
avctx->audio_service_type = s->service_type;
avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
}
avctx->bit_rate = s->bit_rate;
}
return i;
}
