add nativeapis

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

en/application-dev/reference/native-apis/_o_h___a_v_codec_async_callback.md

+# OH_AVCodecAsyncCallback
+
+
+## Overview
+
+Defines a collection of asynchronous callback functions for an **OH_AVCodec** instance. You must register this struct instance for an **OH_AVCodec** instance and process the information reported through these callbacks to ensure the normal running of the instance.
+
+\@syscap SystemCapability.Multimedia.Media.CodecBase
+
+**Since:**
+9
+
+**Related Modules:**
+
+[CodecBase](_codec_base.md)
+
+
+## Summary
+
+
+### Member Variables
+
+| Name | Description | 
+| -------- | -------- |
+| **onError** | Indicates the callback used to report errors occurred during the running of the instance. For details, see [OH_AVCodecOnError](_codec_base.md#oh_avcodeconerror) | 
+| **onStreamChanged** | Indicates the callback used to report stream information. For details, see [OH_AVCodecOnStreamChanged](_codec_base.md#oh_avcodeconstreamchanged) | 
+| **onNeedInputData** | Indicates the callback used to report input data needed. For details, see [OH_AVCodecOnNeedInputData](_codec_base.md#oh_avcodeconneedinputdata) | 
+| **onNeedOutputData** | Indicates the callback used to report output data needed. For details, see [OH_AVCodecOnNewOutputData](_codec_base.md#oh_avcodeconnewoutputdata) |