Function decodeAudio

libhb/decavcodec.c:2509–2689

}

static void decodeAudio(hb_work_private_t *pv, packet_info_t * packet_info)
{
    AVCodecContext * context = pv->context;
    AVPacket       * avp = pv->pkt;
    int              ret;

    // libav does not supply timestamps for wmapro audio (possibly others)
    // if there is an input timestamp, initialize next_pts
    if (pv->next_pts     == (int64_t)AV_NOPTS_VALUE &&
        packet_info      != NULL &&
        packet_info->pts != AV_NOPTS_VALUE)
    {
        pv->next_pts = packet_info->pts;
    }
    if (packet_info != NULL)
    {
        avp->data = packet_info->data;
        avp->size = packet_info->size;
        avp->pts  = packet_info->pts;
        avp->dts  = AV_NOPTS_VALUE;
        avp->flags |= packet_info->discard * AV_PKT_FLAG_DISCARD;
    }
    else
    {
        avp->data = NULL;
        avp->size = 0;
    }

    ret = avcodec_send_packet(context, avp);
    if (ret < 0 && ret != AVERROR_EOF)
    {
        av_packet_unref(avp);
        return;
    }

    do
    {
        ret = avcodec_receive_frame(context, pv->frame);
        if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
        {
            ++pv->decode_errors;
        }
        if (ret < 0)
        {
            break;
        }

        hb_buffer_t * out;
        int           samplerate;

        // libavcoded doesn't yet consistently set frame->sample_rate
        if (pv->frame->sample_rate != 0)
        {
            samplerate = pv->frame->sample_rate;
        }
        else
        {
            samplerate = context->sample_rate;