harmony 鸿蒙image_pixel_map_napi.h

  • 2023-06-24
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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

Image

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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