harmony 鸿蒙OH_NativeImage
OH_NativeImage
概述
提供NativeImage功能,作为数据消费者,主要用来将数据和OpenGL纹理对接,需在OpenGL环境下使用
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
起始版本:
9
汇总
文件
名称 | 描述 |
---|---|
native_image.h | 定义获取和使用NativeImage的相关函数 引用文件:<native_image/native_image.h> 库:libnative_image.so |
类型定义
名称 | 描述 |
---|---|
OH_NativeImage | 提供OH_NativeImage结构体声明 |
OHNativeWindow | 提供对NativeWindow的访问功能 |
函数
名称 | 描述 |
---|---|
OH_NativeImage_Create (uint32_t textureId, uint32_t textureTarget) | 创建一个OH_NativeImage实例,该实例与OpenGL ES的纹理ID和纹理目标相关联 |
OH_NativeImage_AcquireNativeWindow (OH_NativeImage *image) | 获取与OH_NativeImage相关联的OHNativeWindow指针. 该OHNativeWindow后续不再需要时需要调用 OH_NativeWindow_DestroyNativeWindow释放 |
OH_NativeImage_AttachContext (OH_NativeImage *image, uint32_t textureId) | 将OH_NativeImage实例附加到当前OpenGL ES上下文, 且该OpenGL ES纹理会绑定到 GL_TEXTURE_EXTERNAL_OES, 并通过OH_NativeImage进行更新 |
OH_NativeImage_DetachContext (OH_NativeImage *image) | 将OH_NativeImage实例从当前OpenGL ES上下文分离 |
OH_NativeImage_UpdateSurfaceImage (OH_NativeImage *image) | 通过OH_NativeImage获取最新帧更新相关联的OpenGL ES纹理 |
OH_NativeImage_GetTimestamp (OH_NativeImage*image) | 获取最近调用OH_NativeImage_UpdateSurfaceImage的纹理图像的相关时间戳 |
OH_NativeImage_GetTransformMatrix (OH_NativeImage *image, float matrix[16]) | 获取最近调用OH_NativeImage_UpdateSurfaceImage的纹理图像的变化矩阵 |
OH_NativeImage_Destroy (OH_NativeImage **image) | 销毁通过OH_NativeImage_Create创建的OH_NativeImage实例, 销毁后该 OH_NativeImage指针会被赋值为空 |
类型定义说明
OH_NativeImage
typedef struct OH_NativeImage OH_NativeImage
描述:
提供OH_NativeImage结构体声明
OHNativeWindow
typedef struct NativeWindow OHNativeWindow
描述:
提供对NativeWindow的访问功能
函数说明
OH_NativeImage_AcquireNativeWindow()
OHNativeWindow* OH_NativeImage_AcquireNativeWindow (OH_NativeImage * image)
描述:
获取与OH_NativeImage相关联的OHNativeWindow指针. 该OHNativeWindow后续不再需要时需要调用
OH_NativeWindow_DestroyNativeWindow释放
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
返回:
成功则返回一个指向OHNativeWindow实例的指针,否则返回NULL
OH_NativeImage_AttachContext()
int32_t OH_NativeImage_AttachContext (OH_NativeImage * image, uint32_t textureId )
描述:
将OH_NativeImage实例附加到当前OpenGL ES上下文, 且该OpenGL ES纹理会绑定到
GL_TEXTURE_EXTERNAL_OES, 并通过OH_NativeImage进行更新
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
textureId | OH_NativeImage要附加到的OpenGL ES纹理的id。 |
返回:
返回值为0表示执行成功
OH_NativeImage_Create()
OH_NativeImage* OH_NativeImage_Create (uint32_t textureId, uint32_t textureTarget )
描述:
创建一个OH_NativeImage实例,该实例与OpenGL ES的纹理ID和纹理目标相关联
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
textureId | OpenGL ES的纹理ID,OH_NativeImage实例会与之相关联 |
textureTarget | OpenGL ES的纹理目标 |
返回:
返回一个指向OH_NativeImage实例的指针 returns NULL otherwise
OH_NativeImage_Destroy()
void OH_NativeImage_Destroy (OH_NativeImage ** image)
描述:
销毁通过OH_NativeImage_Create创建的OH_NativeImage实例, 销毁后该
OH_NativeImage指针会被赋值为空
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
OH_NativeImage_DetachContext()
int32_t OH_NativeImage_DetachContext (OH_NativeImage * image)
描述:
将OH_NativeImage实例从当前OpenGL ES上下文分离
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
返回:
返回值为0表示执行成功
OH_NativeImage_GetTimestamp()
int64_t OH_NativeImage_GetTimestamp (OH_NativeImage * image)
描述:
获取最近调用OH_NativeImage_UpdateSurfaceImage的纹理图像的相关时间戳
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
返回:
返回纹理图像的相关时间戳
OH_NativeImage_GetTransformMatrix()
int32_t OH_NativeImage_GetTransformMatrix (OH_NativeImage * image, float matrix[16] )
描述:
获取最近调用OH_NativeImage_UpdateSurfaceImage的纹理图像的变化矩阵
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
matrix | 用来存储要获取的4*4的变化矩阵。 |
返回:
返回值为0表示执行成功
OH_NativeImage_UpdateSurfaceImage()
int32_t OH_NativeImage_UpdateSurfaceImage (OH_NativeImage * image)
描述:
通过OH_NativeImage获取最新帧更新相关联的OpenGL ES纹理
\@syscap SystemCapability.Graphic.Graphic2D.OH_NativeImage
参数:
名称 | 描述 |
---|---|
image | 指向OH_NativeImage实例的指针。 |
返回:
返回值为0表示执行成功
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