使用ffmpeg lib解码Opus音频未提供正确的音频

Question

这是我的代码，所有数据均可正确打印，没有错误，但不能正确播放。我正在获得无线电声音之类的音频。人的声音一直在播放，就像声音一样，无法听见。我不确定所有值是否正确。但是，如果我更改它，它将无法正常工作。请帮助我如何获得正确的音频声音。

Opus.cpp

 {   void Opus::Decode1_working(int8_t *inBuf, int inLen , int16_t *outBuf, int *decodedLen)
{


 AVPacket avpkt;
 AVFrame *decoded_frame = NULL;

 av_init_packet(&avpkt);
 avpkt.data = (uint8_t*)inBuf;
 avpkt.size = inLen;


 decoded_frame = av_frame_alloc();
 av_frame_unref(decoded_frame);
int len = avcodec_send_packet(c, &avpkt);
 if (len < 0)
 {
      //Error
      return;
 }
 else
 {
     int retval = avcodec_receive_frame(c, decoded_frame);
     if(retval >= 0)
     {
         const AVCodecDescriptor *codesc = avcodec_descriptor_get(c->codec_id);

         int planeSize;
         int data_size = av_samples_get_buffer_size
                         (&planeSize,
                          c->channels,
                          decoded_frame->nb_samples,
                          c->sample_fmt,
                          1);

         if(data_size < AUDIO_MAXBUF_SIZE)
         {
             memcpy(outBuf, decoded_frame->data[0], (data_size));// * sizeof(uint8_t)));
             *decodedLen = data_size;
         }
         else
         {
            //Not copied
        }

     }

 }
 av_frame_free(&decoded_frame);
}

int Opus::init(void *args) {

i_sampleRate = 0;
i_channels = 0;

avcodec_register_all();
codec = avcodec_find_decoder(AV_CODEC_ID_OPUS);
 if(codec ==NULL)
 {
    //Codec not open
 }

c= avcodec_alloc_context3(codec);

 c->sample_rate = 48000;
 c->channels = 1;
 c->bit_rate = 48000;


    av_opt_set_int(c, "refcounted_frames", 1, 0);
    int codecOpen = 0;
     codecOpen = avcodec_open2(c, codec,NULL);//,&audioOptionsDict) ;
     if (codecOpen < 0)
     {
         //return error;
     }

return 0;
}

int Opus::decode(Packet *packet) {

int8_t *data = new int8_t[packet->size];
 memcpy(data, packet->data, (packet->size * sizeof(int8_t)));

long length = packet->size;

int16_t *pcmdata = new int16_t[AUDIO_MAXBUF_SIZE];//[outLen];

i_sampleRate = 48000;
i_channels = 1;

int decodedLen = 0;
Decode1_working(data,length,pcmdata, &decodedLen);

if (p_callback)
{
    ++i_framesDecoded;
    p_callback->AfterAudioDecode((u8*)pcmdata,
                                 //length * sizeof(u8),
                                  decodedLen,//* sizeof(u8),
                                 packet->pts);
}
return 1;
}

}