1e41f4b71Sopenharmony_ci# native_avbuffer.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci声明了媒体数据结构AVBuffer的函数接口。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**库：** libnative_media_core.so 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**系统能力：** SystemCapability.Multimedia.Media.Core 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**起始版本：** 11 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci**相关模块：**[Core](_core.md) 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci## 汇总 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci### 类型定义 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci| 名称 | 描述 | 23e41f4b71Sopenharmony_ci| -------- | -------- | 24e41f4b71Sopenharmony_ci| typedef struct [OH_AVBuffer](_core.md#oh_avbuffer) [OH_AVBuffer](_core.md#oh_avbuffer) | 为媒体内存接口定义native层对象。 | 25e41f4b71Sopenharmony_ci| typedef struct [OH_NativeBuffer](_core.md#oh_nativebuffer) [OH_NativeBuffer](_core.md#oh_nativebuffer) | 为图形内存接口定义native层对象。 | 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci### 函数 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci| 名称 | 描述 | 31e41f4b71Sopenharmony_ci| -------- | -------- | 32e41f4b71Sopenharmony_ci| OH_AVBuffer \* [OH_AVBuffer_Create](_core.md#oh_avbuffer_create) (int32_t capacity) | 创建OH_AVBuffer实例。 需要注意的是，返回值指向的创建OH_AVBuffer的实例需要调用者手动释放，请参阅[OH_AVBuffer_Destroy](_core.md#oh_avbuffer_destroy)。 | 33e41f4b71Sopenharmony_ci| [OH_AVErrCode](_core.md#oh_averrcode) [OH_AVBuffer_Destroy](_core.md#oh_avbuffer_destroy) (OH_AVBuffer \*buffer) | 释放OH_AVBuffer实例指针的资源。 | 34e41f4b71Sopenharmony_ci| [OH_AVErrCode](_core.md#oh_averrcode) [OH_AVBuffer_GetBufferAttr](_core.md#oh_avbuffer_getbufferattr) (OH_AVBuffer \*buffer, [OH_AVCodecBufferAttr](_o_h___a_v_codec_buffer_attr.md) \*attr) | 获取数据缓冲区的pts、size、offset、flags高频属性参数。 | 35e41f4b71Sopenharmony_ci| [OH_AVErrCode](_core.md#oh_averrcode) [OH_AVBuffer_SetBufferAttr](_core.md#oh_avbuffer_setbufferattr) (OH_AVBuffer \*buffer, const [OH_AVCodecBufferAttr](_o_h___a_v_codec_buffer_attr.md) \*attr) | 设置数据缓冲区的pts、size、offset、flags高频属性参数。 | 36e41f4b71Sopenharmony_ci| OH_AVFormat \* [OH_AVBuffer_GetParameter](_core.md#oh_avbuffer_getparameter) (OH_AVBuffer \*buffer) | 获取除基础属性外的其他参数，信息在OH_AVFormat中承载。 | 37e41f4b71Sopenharmony_ci| [OH_AVErrCode](_core.md#oh_averrcode) [OH_AVBuffer_SetParameter](_core.md#oh_avbuffer_setparameter) (OH_AVBuffer \*buffer, const OH_AVFormat \*format) | 设置除基础属性外的其他参数，信息在OH_AVFormat中承载。 | 38e41f4b71Sopenharmony_ci| uint8_t \* [OH_AVBuffer_GetAddr](_core.md#oh_avbuffer_getaddr) (OH_AVBuffer \*buffer) | 获取数据缓冲区的虚拟地址。 | 39e41f4b71Sopenharmony_ci| int32_t [OH_AVBuffer_GetCapacity](_core.md#oh_avbuffer_getcapacity) (OH_AVBuffer \*buffer) | 获取数据缓冲区的容量（字节数）。 | 40e41f4b71Sopenharmony_ci| OH_NativeBuffer \* [OH_AVBuffer_GetNativeBuffer](_core.md#oh_avbuffer_getnativebuffer) (OH_AVBuffer \*buffer) | 获取OH_NativeBuffer实例的指针。 | 41