harmony 鸿蒙video_processing.h

2025-06-12
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video_processing.h

Overview

The video_processing.h file declares the video processing functions.

It provides video processing capabilities, including color space conversion, metadata generation, and video scaling.

Library: libvideo_processing.so

File to include:

System capability: SystemCapability.Multimedia.VideoProcessingEngine

Since: 12

Related module: VideoProcessing

Summary

Functions

Name	Description
VideoProcessing_ErrorCode OH_VideoProcessing_InitializeEnvironment (void)	Initializes the global video processing environment.
VideoProcessing_ErrorCode OH_VideoProcessing_DeinitializeEnvironment (void)	Releases the global video processing environment.
bool OH_VideoProcessing_IsColorSpaceConversionSupported (const VideoProcessing_ColorSpaceInfo sourceVideoInfo, const VideoProcessing_ColorSpaceInfo destinationVideoInfo)	Checks whether color space conversion is supported during video processing.
bool OH_VideoProcessing_IsMetadataGenerationSupported (const VideoProcessing_ColorSpaceInfo *sourceVideoInfo)	Checks whether metadata generation is supported during video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_Create (OH_VideoProcessing **videoProcessor, int type)	Creates a video processing instance.
VideoProcessing_ErrorCode OH_VideoProcessing_Destroy (OH_VideoProcessing *videoProcessor)	Destroys a video processing instance.
VideoProcessing_ErrorCode OH_VideoProcessing_RegisterCallback (OH_VideoProcessing videoProcessor, const VideoProcessing_Callback callback, void *userData)	Registers a callback for video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_SetSurface (OH_VideoProcessing videoProcessor, const OHNativeWindow window)	Sets an output surface for video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_GetSurface (OH_VideoProcessing videoProcessor, OHNativeWindow *window)	Creates a surface for video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_SetParameter (OH_VideoProcessing videoProcessor, const OH_AVFormat parameter)	Sets video processing parameters.
VideoProcessing_ErrorCode OH_VideoProcessing_GetParameter (OH_VideoProcessing videoProcessor, OH_AVFormat parameter)	Obtains video processing parameters.
VideoProcessing_ErrorCode OH_VideoProcessing_Start (OH_VideoProcessing *videoProcessor)	Starts video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_Stop (OH_VideoProcessing *videoProcessor)	Stops video processing.
VideoProcessing_ErrorCode OH_VideoProcessing_RenderOutputBuffer (OH_VideoProcessing *videoProcessor, uint32_t index)	Renders and processes the buffer, and then outputs it.
VideoProcessing_ErrorCode OH_VideoProcessingCallback_Create (VideoProcessing_Callback **callback)	Creates a video processing callback object.
VideoProcessing_ErrorCode OH_VideoProcessingCallback_Destroy (VideoProcessing_Callback *callback)	Destroys a video processing callback object.
VideoProcessing_ErrorCode OH_VideoProcessingCallback_BindOnError (VideoProcessing_Callback *callback, OH_VideoProcessingCallback_OnError onError)	Binds the callback function OH_VideoProcessingCallback_OnError to a video processing callback object.
VideoProcessing_ErrorCode OH_VideoProcessingCallback_BindOnState (VideoProcessing_Callback *callback, OH_VideoProcessingCallback_OnState onState)	Binds the callback function OH_VideoProcessingCallback_OnState to a video processing callback object.
VideoProcessing_ErrorCode OH_VideoProcessingCallback_BindOnNewOutputBuffer (VideoProcessing_Callback *callback, OH_VideoProcessingCallback_OnNewOutputBuffer onNewOutputBuffer)	Binds the callback function OH_VideoProcessingCallback_OnNewOutputBuffer to a video processing callback object.