鸿蒙显示相关接口文章目录鸿蒙显示相关接口display_gralloc部分接口定义display_devicex相关接口display_gralloc部分接口定义以下接口列举的为VDI接口接口声明见文件/drivers/peripheral/display/buffer/hdi_service/include/idisplay_buffer_vdi.h接口描述与AndroidIDisplayBuffer *Get()获取IDisplayBuffer接口的客户端代理对象int32_t IsSupportedAlloc(const std::vector infos, std::vector supporteds)判断是否能申请请求的bufferint32_t AllocMem(const AllocInfo info, BufferHandle* handle)申请Bufferallocatevoid FreeMem(const BufferHandle handle)释放BufferfreeBuffervoid* Mmap(const BufferHandle handle)将Buffer映射到内存Lockint32_t Unmap(const BufferHandle handle)解除Buffer内存映射Unlockint32_t RegisterBuffer(const BufferHandle handle)注册Bufferint32_t FlushCache(const BufferHandle handle)刷新Buffer缓存flushLockedBufferint32_t InvalidateCache(const BufferHandle handle)废弃Buffer缓存invalidateBufferint32_t GetMetadata(const BufferHandle handle, uint32_t key, std::vectoruint8_t value)获取Buffer的元数据int32_t ListMetadataKeys(const BufferHandle handle, std::vectoruint32_t keys)列出所有元数据的keyint32_t EraseMetadataKey(const BufferHandle handle, uint32_t key)清除指定key的元数据信息display_devicex相关接口drivers/peripheral/display/composer/hdi_service/include/idisplay_composer_vdi.h功能描述接口名称注册热插拔事件回调int32_t RegHotPlugCallback(HotPlugCallback cb, void* data)获取显示设备能力集int32_t GetDisplayCapability(uint32_t devId, DisplayCapability info)获取显示设备支持的显示模式信息int32_t GetDisplaySupportedModes(uint32_t devId, std::vectorDisplayModeInfo modes)获取显示设备当前的显示模式int32_t GetDisplayMode(uint32_t devId, uint32_t modeId)设置显示设备的显示模式int32_t SetDisplayMode(uint32_t devId, uint32_t modeId)获取显示设备当前的电源状态int32_t GetDisplayPowerStatus(uint32_t devId, DispPowerStatus status)设置显示设备当前的电源状态int32_t SetDisplayPowerStatus(uint32_t devId, DispPowerStatus status)获取显示设备当前的背光值int32_t GetDisplayBacklight(uint32_t devId, uint32_t level)设置显示设备当前的背光值int32_t SetDisplayBacklight(uint32_t devId, uint32_t level)获取显示设备属性值int32_t GetDisplayProperty(uint32_t devId, uint32_t id, uint64_t value)获取显示设备合成类型有变化的layerint32_t GetDisplayCompChange(uint32_t devId, std::vectoruint32_t layers, std::vectorint32_t types)设置显示设备的裁剪区域int32_t SetDisplayClientCrop(uint32_t devId, const IRect rect)设置显示设备的显示缓存int32_t SetDisplayClientBuffer(uint32_t devId, const BufferHandle buffer, int32_t fence)设置显示设备的显示脏区int32_t SetDisplayClientDamage(uint32_t devId, std::vectorIRect rects)使能垂直同步信号int32_t SetDisplayVsyncEnabled(uint32_t devId, bool enabled)注册VBlank事件回调int32_t RegDisplayVBlankCallback(uint32_t devId, VBlankCallback cb, void* data)获取显示图层fenceint32_t GetDisplayReleaseFence(uint32_t devId, std::vectoruint32_t layers, std::vectorint32_t fences)创建虚拟显示设备int32_t CreateVirtualDisplay(uint32_t width, uint32_t height, int32_t format, uint32_t devId)销毁虚拟显示设备int32_t DestroyVirtualDisplay(uint32_t devId)设置虚拟屏的输出缓存int32_t SetVirtualDisplayBuffer(uint32_t devId, const BufferHandle buffer, const int32_t fence)设置显示设备属性值int32_t SetDisplayProperty(uint32_t devId, uint32_t id, uint64_t value)提交合成送显请求int32_t Commit(uint32_t devId, int32_t fence)打开图层int32_t CreateLayer(uint32_t devId, const LayerInfo layerInfo, uint32_t layerId)关闭图层int32_t DestroyLayer(uint32_t devId, uint32_t layerId)准备要送显的图层int32_t PrepareDisplayLayers(uint32_t devId, bool needFlushFb)设置图层alpha值int32_t SetLayerAlpha(uint32_t devId, uint32_t layerId, const LayerAlpha alpha)设置图层区域int32_t SetLayerRegion(uint32_t devId, uint32_t layerId, const IRect rect)设置图层裁剪区域int32_t SetLayerCrop(uint32_t devId, uint32_t layerId, const IRect rect)设置图层Z轴次序int32_t SetLayerZorder(uint32_t devId, uint32_t layerId, uint32_t zorder)设置图层预乘int32_t SetLayerPreMulti(uint32_t devId, uint32_t layerId, bool preMul)设置图层转换模式int32_t SetLayerTransformMode(uint32_t devId, uint32_t layerId, TransformType type)设置图层刷新区域int32_t SetLayerDirtyRegion(uint32_t devId, uint32_t layerId, const std::vectorIRect rects)设置一个图层的可见区域int32_t SetLayerVisibleRegion(uint32_t devId, uint32_t layerId, std::vectorIRect rects)设置一个层的缓冲区int32_t SetLayerBuffer(uint32_t devId, uint32_t layerId, const BufferHandle buffer, int32_t fence)设置客户端期望的组合类型int32_t SetLayerCompositionType(uint32_t devId, uint32_t layerId, CompositionType type)设置混合类型int32_t SetLayerBlendType(uint32_t devId, uint32_t layerId, BlendType type)设置图层蒙版信息int32_t SetLayerMaskInfo(uint32_t devId, uint32_t layerId, const MaskInfo maskInfo)设置纯色图层int32_t SetLayerColor(uint32_t devId, uint32_t layerId, const LayerColor layerColor)