1e41f4b71Sopenharmony_ci# image_packer_mdk.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci声明用于将图像编码到缓冲区或文件的方法。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci可用于将像素数据编码到目标缓冲区或文件中。 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci编码过程如下： 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci通过OH_ImagePacker_Create方法创建编码器实例对象。 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci然后通过OH_ImagePacker_InitNative将编码器实例对象转换为编码器原生实例对象。 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci接下来用OH_ImagePacker_PackToData或者OH_ImagePacker_PackToFile将源以特定的编码选项编码进目标区域。 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci最后通过OH_ImagePacker_Release释放编码器实例对象。 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci**库：** libimage_packer_ndk.z.so 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci**引用文件**：<multimedia/image_framework/image_packer_mdk.h> 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci**系统能力：** SystemCapability.Multimedia.Image 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci**起始版本：** 11 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci**相关模块：** [Image](image.md) 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci## 汇总 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci### 结构体 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci| 名称 | 描述 | 37e41f4b71Sopenharmony_ci| -------- | -------- | 38e41f4b71Sopenharmony_ci| struct [ImagePacker_Opts_](_image_packer___opts__.md) | 定义图像编码选项信息。 | 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci### 类型定义 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci| 名称 | 描述 | 44e41f4b71Sopenharmony_ci| -------- | -------- | 45e41f4b71Sopenharmony_ci| typedef struct ImagePacker_Native_ [ImagePacker_Native](image.md#imagepacker_native) | 为编码器方法定义native层编码器对象。 | 46e41f4b71Sopenharmony_ci| typedef struct [ImagePacker_Opts_](_image_packer___opts__.md) [ImagePacker_Opts](image.md#imagepacker_opts) | 定义图像编码选项的别名。 | 47e41f4b71Sopenharmony_ci 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci### 函数 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ci| 名称 | 描述 | 52e41f4b71Sopenharmony_ci| -------- | -------- | 53e41f4b71Sopenharmony_ci| int32_t [OH_ImagePacker_Create](image.md#oh_imagepacker_create) (napi_env env, napi_value \*res) | 获取JavaScript native层API ImagePacker对象。 | 54e41f4b71Sopenharmony_ci| [ImagePacker_Native](image.md#imagepacker_native) \* [OH_ImagePacker_InitNative](image.md#oh_imagepacker_initnative) (napi_env env, napi_value packer) | 从输入JavaScript native层API ImagePacker对象中，转换成ImagePacker_Native值。 | 55e41f4b71Sopenharmony_ci| int32_t [OH_ImagePacker_PackToData](image.md#oh_imagepacker_packtodata) ([ImagePacker_Native](image.md#imagepacker_native) \*native, napi_value source, [ImagePacker_Opts](image.md#imagepacker_opts) \*opts, uint8_t \*outData, size_t \*size) | 通过一个给定的选项ImagePacker_Opts结构体，将输入JavaScript native层API PixelMap对象或者ImageSource对象编码并输出到指定的缓存区outData中。 | 56e41f4b71Sopenharmony_ci| int32_t [OH_ImagePacker_PackToFile](image.md#oh_imagepacker_packtofile) ([ImagePacker_Native](image.md#imagepacker_native) \*native, napi_value source, [ImagePacker_Opts](image.md#imagepacker_opts) \*opts, int fd) | 通过一个给定的选项ImagePacker_Opts结构体，将输入JavaScript native层API PixelMap对象或者ImageSource对象编码并输出<br/>到指定的文件中。 | 57e41f4b71Sopenharmony_ci| int32_t [OH_ImagePacker_Release](image.md#oh_imagepacker_release) ([ImagePacker_Native](image.md#imagepacker_native) \*native) | 释放native层编码器对象[ImagePacker_Native](image.md#imagepacker_native)。 | 58