# OH_AVCodecAsyncCallback

> phone 12+ | 2in1 13+ | tablet 12+ | tv 19+ | wearable 18+

```c
typedef struct OH_AVCodecAsyncCallback {...} OH_AVCodecAsyncCallback
```

## 概述

> phone | 2in1 | tablet | tv | wearable

OH_AVCodec中所有异步回调函数指针的集合。将该结构体的实例注册到OH_AVCodec实例中，并处理回调上报的信息，以保证OH_AVCodec的正常运行。

**起始版本：** 9

**废弃版本：** 11

**替代接口：** [OH_AVCodecCallback](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-codecbase-oh-avcodeccallback)

**相关模块：** [CodecBase](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-codecbase)

**所在头文件：** [native_avcodec_base.h](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-native-avcodec-base-h)

## 汇总

> phone | 2in1 | tablet | tv | wearable

### 成员变量

> phone | 2in1 | tablet | tv | wearable

|名称|描述|
|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-------------|
|[OH_AVCodecOnError](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-native-avcodec-base-h#oh_avcodeconerror) onError|监控编解码器操作错误。|
|[OH_AVCodecOnStreamChanged](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-native-avcodec-base-h#oh_avcodeconstreamchanged) onStreamChanged|监控编解码器流变化。|
|[OH_AVCodecOnNeedInputData](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-native-avcodec-base-h#oh_avcodeconneedinputdata) onNeedInputData|监控编解码器需要输入数据。|
|[OH_AVCodecOnNewOutputData](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/capi-native-avcodec-base-h#oh_avcodeconnewoutputdata) onNeedOutputData|监控编解码器已生成输出数据。|