add nativeapis

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

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

+# OhosPixelMapInfo
+
+
+## Overview
+
+Defines the pixel map information.
+
+**Since:**
+8
+
+**Related Modules:**
+
+[Image](image.md)
+
+
+## Summary
+
+
+### Member Variables
+
+| Name | Description | 
+| -------- | -------- |
+| [width](#width) | Image width, in pixels.  | 
+| [height](#height) | Image height, in pixels.  | 
+| [rowSize](#rowsize) | Number of bytes in each line.  | 
+| [pixelFormat](#pixelformat) | Pixel format.  | 
+
+
+## Member Variable Description 
+
+
+### height
+
+  
+```
+uint32_t OhosPixelMapInfo::height
+```
+**Description**<br>
+Image height, in pixels.
+
+
+### pixelFormat
+
+  
+```
+int32_t OhosPixelMapInfo::pixelFormat
+```
+**Description**<br>
+Pixel format.
+
+
+### rowSize
+
+  
+```
+uint32_t OhosPixelMapInfo::rowSize
+```
+**Description**<br>
+Number of bytes in each line.
+
+
+### width
+
+  
+```
+uint32_t OhosPixelMapInfo::width
+```
+**Description**<br>
+Image width, in pixels.