harmony 鸿蒙image_pixel_map_napi.h
image_pixel_map_napi.h
Overview
The image_pixel_map_napi.h file declares the APIs that can lock, access, and unlock a pixel map.
Since
8
Related Modules
Summary
Structs
| Name | Description |
|---|---|
| OHOS::Media::OhosPixelMapInfo | Defines the pixel map information. |
Enums
| Name | Description |
|---|---|
| { OHOS::Media::OHOS_IMAGE_RESULT_SUCCESS = 0, OHOS::Media::OHOS_IMAGE_RESULT_BAD_PARAMETER = -1 } |
Enumerates the error codes returned by the functions. |
| { OHOS::Media::OHOS_PIXEL_MAP_FORMAT_NONE = 0, OHOS::Media::OHOS_PIXEL_MAP_FORMAT_RGBA_8888 = 3, OHOS::Media::OHOS_PIXEL_MAP_FORMAT_RGB_565 = 2 } |
Enumerates the pixel map formats. |
| { OHOS::Media::OHOS_PIXEL_MAP_SCALE_MODE_FIT_TARGET_SIZE = 0, OHOS::Media::OHOS_PIXEL_MAP_SCALE_MODE_CENTER_CROP = 1 } |
Enumerates the pixel map scale modes. |
Functions
| Name | Description |
|---|---|
| OHOS::Media::OH_GetImageInfo (napi_env env, napi_value value, OhosPixelMapInfo *info) | Obtains the information about a PixelMap object and stores the information to the OhosPixelMapInfo struct. |
| OHOS::Media::OH_AccessPixels (napi_env env, napi_value value, void **addrPtr) | Obtains the memory address of a PixelMap object and locks the memory. |
| OHOS::Media::OH_UnAccessPixels (napi_env env, napi_value value) | Unlocks the memory of a PixelMap object. This function is used with OH_AccessPixels in pairs. |
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