1# external_window.h 2 3 4## 概述 5 6定义获取和使用NativeWindow的相关函数。 7 8**起始版本：** 9 108 11 12**相关模块：** 13 14[NativeWindow](_native_window.md) 15 16 17## 汇总 18 19 20### 结构体 21 22 | 结构体名称 | 描述 | 23| -------- | -------- | 24| [Region](_region.md) | 表示本地窗口NativeWindow需要更新内容的矩形区域（脏区）。 | 25| [Region::Rect](_rect.md) | 矩形区域。 | 26| [OHHDRMetaData](_o_h_h_d_r_meta_data.md) | HDR元数据结构体定义 。 | 27| [OHExtDataHandle](_o_h_ext_data_handle.md) | 扩展数据句柄结构体定义 。 | 28 29 30### 类型定义 31 32 | 类型定义名称 | 描述 | 33| -------- | -------- | 34| OHNativeWindow | 提供对NativeWindow的访问功能 | 35| OHNativeWindowBuffer | 提供对NativeWindowBuffer的访问功能 | 36| [Region](_region.md) | 表示本地窗口NativeWindow需要更新内容的矩形区域（脏区） | 37 38 39### 枚举 40 41 | 枚举名称 | 描述 | 42| -------- | -------- | 43| [NativeWindowOperation](_native_window.md#nativewindowoperation) { SET_BUFFER_GEOMETRY, GET_BUFFER_GEOMETRY, GET_FORMAT, SET_FORMAT, GET_USAGE, SET_USAGE, SET_STRIDE, GET_STRIDE, SET_SWAP_INTERVAL, GET_SWAP_INTERVAL, SET_TIMEOUT, GET_TIMEOUT, SET_COLOR_GAMUT, GET_COLOR_GAMUT, SET_TRANSFORM, GET_TRANSFORM, SET_UI_TIMESTAMP } | OH_NativeWindow_NativeWindowHandleOpt函数中的操作码 | 44| [OHScalingMode](_native_window.md#ohscalingmode) { OH_SCALING_MODE_FREEZE = 0, OH_SCALING_MODE_SCALE_TO_WINDOW, OH_SCALING_MODE_SCALE_CROP, OH_SCALING_MODE_NO_SCALE_CROP } | 缩放模式 Scaling Mode | 45| [OHHDRMetadataKey](_native_window.md#ohhdrmetadatakey) { OH_METAKEY_RED_PRIMARY_X = 0, OH_METAKEY_RED_PRIMARY_Y = 1, OH_METAKEY_GREEN_PRIMARY_X = 2, OH_METAKEY_GREEN_PRIMARY_Y = 3, OH_METAKEY_BLUE_PRIMARY_X = 4, OH_METAKEY_BLUE_PRIMARY_Y = 5, OH_METAKEY_WHITE_PRIMARY_X = 6, OH_METAKEY_WHITE_PRIMARY_Y = 7, OH_METAKEY_MAX_LUMINANCE = 8, OH_METAKEY_MIN_LUMINANCE = 9, OH_METAKEY_MAX_CONTENT_LIGHT_LEVEL = 10, OH_METAKEY_MAX_FRAME_AVERAGE_LIGHT_LEVEL = 11, OH_METAKEY_HDR10_PLUS = 12, OH_METAKEY_HDR_VIVID = 13 } | 枚举HDR元数据关键字 | 46 47 48### 函数 49 50| 函数名称 | 描述 | 51| -------- | -------- | 52| [OH_NativeWindow_CreateNativeWindow](_native_window.md#oh_nativewindow_createnativewindow) (void \*pSurface) | 创建NativeWindow实例，每次调用都会产生一个新的NativeWindow实例 | 53| [OH_NativeWindow_DestroyNativeWindow](_native_window.md#oh_nativewindow_destroynativewindow) (OHNativeWindow \*window) | 将NativeWindow对象的引用计数减1，当引用计数为0的时候，该NativeWindow对象会被析构掉 | 54| [OH_NativeWindow_CreateNativeWindowBufferFromSurfaceBuffer](_native_window.md#oh_nativewindow_createnativewindowbufferfromsurfacebuffer) (void \*pSurfaceBuffer) | 创建NativeWindowBuffer实例，每次调用都会产生一个新的NativeWindowBuffer实例 | 55| [OH_NativeWindow_DestroyNativeWindowBuffer](_native_window.md#oh_nativewindow_destroynativewindowbuffer) (OHNativeWindowBuffer \*buffer) | 将NativeWindowBuffer对象的引用计数减1，当引用计数为0的时候，该NativeWindowBuffer对象会被析构掉 | 56| [OH_NativeWindow_NativeWindowRequestBuffer](_native_window.md#oh_nativewindow_nativewindowrequestbuffer) (OHNativeWindow \*window, OHNativeWindowBuffer \*\*buffer, int \*fenceFd) | 通过NativeWindow对象申请一块NativeWindowBuffer，用以内容生产 | 57| [OH_NativeWindow_NativeWindowFlushBuffer](_native_window.md#oh_nativewindow_nativewindowflushbuffer) (OHNativeWindow \*window, OHNativeWindowBuffer \*buffer, int fenceFd, [Region](_region.md) region) | 通过NativeWindow将生产好内容的NativeWindowBuffer放回到Buffer队列中，用以内容消费 | 58| [OH_NativeWindow_NativeWindowAbortBuffer](_native_window.md#oh_nativewindow_nativewindowabortbuffer) (OHNativeWindow \*window, OHNativeWindowBuffer \*buffer) | 通过NativeWindow将之前申请出来的NativeWindowBuffer返还到Buffer队列中，供下次再申请 | 59| [OH_NativeWindow_NativeWindowHandleOpt](_native_window.md#oh_nativewindow_nativewindowhandleopt) (OHNativeWindow \*window, int code,...) | 设置/获取NativeWindow的属性，包括设置/获取宽高、内容格式等 | 60| [OH_NativeWindow_GetBufferHandleFromNative](_native_window.md#oh_nativewindow_getbufferhandlefromnative) (OHNativeWindowBuffer \*buffer) | 通过NativeWindowBuffer获取该buffer的BufferHandle指针 | 61| [OH_NativeWindow_NativeObjectReference](_native_window.md#oh_nativewindow_nativeobjectreference) (void \*obj) | 增加一个NativeObject的引用计数 | 62| [OH_NativeWindow_NativeObjectUnreference](_native_window.md#oh_nativewindow_nativeobjectunreference) (void \*obj) | 减少一个NativeObject的引用计数，当引用计数减少为0时，该NativeObject将被析构掉 | 63| [OH_NativeWindow_GetNativeObjectMagic](_native_window.md#oh_nativewindow_getnativeobjectmagic) (void \*obj) | 获取NativeObject的MagicId | 64| [OH_NativeWindow_NativeWindowSetScalingMode](_native_window.md#oh_nativewindow_nativewindowsetscalingmode) (OHNativeWindow \*window, uint32_t sequence, [OHScalingMode](_native_window.md#ohscalingmode) scalingMode) | 设置NativeWindow的ScalingMode | 65| [OH_NativeWindow_NativeWindowSetMetaData](_native_window.md#oh_nativewindow_nativewindowsetmetadata) (OHNativeWindow \*window, uint32_t sequence, int32_t size, const [OHHDRMetaData](_o_h_h_d_r_meta_data.md) \*metaData) | 设置NativeWindow的元数据 | 66| [OH_NativeWindow_NativeWindowSetMetaDataSet](_native_window.md#oh_nativewindow_nativewindowsetmetadataset) (OHNativeWindow \*window, uint32_t sequence, [OHHDRMetadataKey](_native_window.md#ohhdrmetadatakey) key, int32_t size, const uint8_t \*metaData) | 设置NativeWindow的元数据集。 | 67| [OH_NativeWindow_NativeWindowSetTunnelHandle](_native_window.md#oh_nativewindow_nativewindowsettunnelhandle) (OHNativeWindow \*window, const [OHExtDataHandle](_o_h_ext_data_handle.md) \*handle) | 设置NativeWindow的TunnelHandle。 |