海思音频 播放快进卡碟

使用外接codec录制保存的文件,录了很久,但是只保存下来十几秒,前面五秒是正常的,后面就跟快进卡碟一样
不论录制多少时间,都只有前面五秒是正常的
贴上相关参数：
stAioAttr.enSamplerate = AUDIO_SAMPLE_RATE_48000;
stAioAttr.enBitwidth = AUDIO_BIT_WIDTH_16;
stAioAttr.enWorkmode = AIO_MODE_I2S_SLAVE;
stAioAttr.enSoundmode = AUDIO_SOUND_MODE_MONO;
stAioAttr.u32EXFlag = 1;
stAioAttr.u32FrmNum = 30;
stAioAttr.u32PtNumPerFrm = SAMPLE_AUDIO_PTNUMPERFRM;
//#define SAMPLE_AUDIO_PTNUMPERFRM 320
stAioAttr.u32ChnCnt = 1;
stAioAttr.u32ClkChnCnt = 1;
stAioAttr.u32ClkSel = 0;

贴上aenc：
/proc/umap # cat aenc

[AENC] Version: [Hi3521D_MPP_V1.0.5.0 B040 Release], Build Time[Nov 12 2018, 13:16:37]

——-AENC CHN ATTR———————————————————————————————
ChnId PlType ADPCMType PoiNum BufSize G726Rate
0 aac NULL 1024 30 NULL

——-AENC CHN STATUS——————————————————————————————
ChnId RcvFrm AiQueLost EncOk FrmErr BufFull GetStrm RlsStrm WtFile
0 24438 0 701 0 23737 673 672 N

BufFull满了那么多次就很奇怪,后面用户获取和释放的数据码流也很少