The **OH_AVScreenCaptureCallback** struct defines all the asynchronous callback function pointers of an **OH_AVScreenCapture** instance. To ensure the normal running of **OH_AVScreenCapture**, you must register the instance of this struct with the **OH_AVScreenCapture** instance and process the information reported by the callback functions.
| [videoInfo](#videoinfo) | [OH_VideoInfo](_o_h___video_info.md)<br>Defines video capture parameters.|
| [recorderInfo](#recorderinfo) | [OH_RecorderInfo](_o_h___recorder_info.md)<br>Defines recording file parameters. This member variable is mandatory when the data type is **OH_CAPTURE_FILE**.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
| [audioSampleRate](#audiosamplerate) | int32_t<br>Defines the audio sampling rate. For details about the supported rates, see **OH_AudioCapturer_GetSamplingRate**.|
| [audioChannels](#audiochannels) | int32_t<br>Defines the number of audio channels.|
| [audioSource](#audiosource) | [OH_AudioCaptureSourceType](_a_v_screen_capture.md#oh_audiocapturesourcetype)<br>Defines the audio source.|
## Member Variable Description
### audioChannels
```
int32_t OH_AudioCaptureInfo::audioChannels
```
**Description**
Defines the number of audio channels.
### audioSampleRate
```
int32_t OH_AudioCaptureInfo::audioSampleRate
```
**Description**
Defines the audio sampling rate. For details about the supported rates, see **OH_AudioCapturer_GetSamplingRate**.
| [micCapInfo](#miccapinfo) | [OH_AudioCaptureInfo](_o_h___audio_capture_info.md)<br>Defines the audio parameters of the microphone.|
| [innerCapInfo](#innercapinfo) | [OH_AudioCaptureInfo](_o_h___audio_capture_info.md)<br>Defines the audio parameters for internal capture.|
| [audioEncInfo](#audioencinfo) | [OH_AudioEncInfo](_o_h___audio_enc_info.md)<br>Defines the audio encoding information. This member variable does not need to be set when **dataType** is set to **OH_ORIGINAL_STREAM**.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
## Member Variable Description
### audioEncInfo
```
OH_AudioEncInfo OH_AudioInfo::audioEncInfo
```
**Description**
Defines the audio encoding information. This member variable does not need to be set when **dataType** is set to **OH_ORIGINAL_STREAM**.
> **NOTE**
>
> This struct is reserved and will be provided in later versions.
### innerCapInfo
```
OH_AudioCaptureInfo OH_AudioInfo::innerCapInfo
```
**Description**
Defines the audio parameters for internal capture.
| [displayId](#displayid) | uint64_t<br>Defines the ID of the physical screen to capture. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_SCREEN**.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
| [missionIDs](#missionids) | int32_t \*<br>Defines the mission ID list. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_WINDOW**.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
| [missionIDsLen](#missionidslen) | int32_t<br>Defines the length of the mission ID list. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_WINDOW**.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
| [videoFrameWidth](#videoframewidth) | int32_t<br>Defines the width of the captured video.|
| [videoFrameHeight](#videoframeheight) | int32_t<br>Defines the height of the captured video.|
| [videoSource](#videosource) | [OH_VideoSourceType](_a_v_screen_capture.md#oh_videosourcetype)<br>Defines the video source type. Currently, only RGBA is supported.|
## Member Variable Description
### displayId
```
uint64_t OH_VideoCaptureInfo::displayId
```
**Description**
Defines the ID of the physical screen to capture. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_SCREEN**.
> **NOTE**
>
> This member variable is reserved and will be provided in later versions.
### missionIDs
```
int32_t* OH_VideoCaptureInfo::missionIDs
```
**Description**
Defines the mission ID list. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_WINDOW**.
> **NOTE**
>
> This member variable is reserved and will be provided in later versions.
### missionIDsLen
```
int32_t OH_VideoCaptureInfo::missionIDsLen
```
**Description**
Defines the length of the mission ID list. This member variable is valid when **capturemode** is set to **CAPTURE_SPECIFIED_WINDOW**.
> **NOTE**
>
> This member variable is reserved and will be provided in later versions.
| [videoCapInfo](#videocapinfo) | [OH_VideoCaptureInfo](_o_h___video_capture_info.md)<br>Defines video capture information.|
| [videoEncInfo](#videoencinfo) | [OH_VideoEncInfo](_o_h___video_enc_info.md)<br>Defines video encoding parameters.<br>**NOTE**: This member variable is reserved and will be provided in later versions.|
## Member Variable Description
### videoCapInfo
```
OH_VideoCaptureInfo OH_VideoInfo::videoCapInfo
```
**Description**
Defines video capture information.
### videoEncInfo
```
OH_VideoEncInfo OH_VideoInfo::videoEncInfo
```
**Description**
Defines video encoding parameters.
> **NOTE**
>
> This member variable is reserved and will be provided in later versions.
The **OhosImageDecodingOps** struct defines the options for decoding an image source. It is used in [OH_ImageSource_CreatePixelMap](image.md#oh_imagesource_createpixelmap) and [OH_ImageSource_CreatePixelMapList](image.md#oh_imagesource_createpixelmaplist).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [editable](image.md#editable) | Defines whether the output pixel map is editable.|
| [pixelFormat](image.md#pixelformat-23) | Defines the pixel format of the output pixel map.|
| [fitDensity](image.md#fitdensity) | Defines the pixel density of the output pixel map.|
| [index](image.md#index) | Defines the index of the output pixel map.|
| [sampleSize](image.md#samplesize) | Defines the size of the sample.|
| [rotate](image.md#rotate) | Defines the decoding rotation option.|
| [size](image.md#size-27) | Defines the pixel width and height of the output pixel map.|
| [region](image.md#region) | Defines the region of the output pixel map.|
The **OhosImageRegion** struct defines the region of an image source to decode. It is used in [OhosImageDecodingOps](_ohos_image_decoding_ops.md), [OH_ImageSource_CreatePixelMap](image.md#oh_imagesource_createpixelmap), and [OH_ImageSource_CreatePixelMapList](image.md#oh_imagesource_createpixelmaplist).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [x](image.md#x) | Defines the X coordinate of the start point, in pixels.|
| [y](image.md#y) | Defines the Y coordinate of the start point, in pixels.|
| [width](image.md#width) | Defines the width of the region, in pixels.|
| [height](image.md#height) | Defines the height of the region, in pixels.|
The **OhosImageSource** struct defines the input resource of an image source. Only one type of resource is accepted at a time. The image source is obtained by calling [OH_ImageSource_Create](image.md#oh_imagesource_create).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [uri](image.md#uri) = nullptr | Defines a pointer to the image source URI. Only a file URI or Base64 URI is accepted.|
| [uriSize](image.md#urisize) = 0 | Defines the length of the image source URI.|
| [fd](image.md#fd) = -1 | Defines the descriptor of the image source.|
| [buffer](image.md#buffer-12) = nullptr | Defines a pointer to the image source buffer. Only a formatted packet buffer or Base64 buffer is accepted.|
| [bufferSize](image.md#buffersize-12) = 0 | Defines the size of the image source buffer.|
The **OhosImageSourceDelayTimeList** struct defines the delay time list of an image source. The delay time list is obtained by calling [OH_ImageSource_GetDelayTime](image.md#oh_imagesource_getdelaytime).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [delayTimeList](image.md#delaytimelist) | Defines a pointer to the head of the image source delay time list.|
| [size](image.md#size-47) = 0 | Defines the size of the image source delay time list.|
The **OhosImageSourceInfo** struct defines the image source information, which is obtained by calling [OH_ImageSource_GetImageInfo](image.md#oh_imagesource_getimageinfo).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [pixelFormat](image.md#pixelformat-33) | Defines the pixel format of the image source. It is set in [OH_ImageSource_Create()](image.md#oh_imagesource_create).|
| [colorSpace](image.md#colorspace) | Defines the color space of the image source.|
| [alphaType](image.md#alphatype) | Defines the alpha type of the image source.|
| [density](image.md#density-22) | Defines the image density of the image source. It is set in [OH_ImageSource_Create()](image.md#oh_imagesource_create).|
| [size](image.md#size-37) | Defines the pixel width and height of the image source.|
The **OhosImageSourceOps** struct defines the image source options. It is used in [OH_ImageSource_Create](image.md#oh_imagesource_create) and [OH_ImageSource_CreateIncremental](image.md#oh_imagesource_createincremental).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [density](image.md#density-12) | Defines the pixel density of the image source.|
| [pixelFormat](image.md#pixelformat-13) | Defines the pixel format of the image source. It is usually used to describe the YUV buffer.|
| [size](image.md#size-17) | Defines the pixel width and height of the image source.|
The **OhosImageSourceProperty** struct defines the property string (in key-value format) of an image source. It is used in [OH_ImageSource_GetImageProperty](image.md#oh_imagesource_getimageproperty) and [OH_ImageSource_ModifyImageProperty](image.md#oh_imagesource_modifyimageproperty).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [value](image.md#value) = nullptr | Defines a pointer to the head of the property string.|
| [size](image.md#size-77) = 0 | Defines the size of the property string.|
The **OhosImageSourceSupportedFormat** struct defines the format string supported by an image source. It is used in [OhosImageSourceSupportedFormatList](_ohos_image_source_supported_format_list.md) and [OH_ImageSource_GetSupportedFormats](image.md#oh_imagesource_getsupportedformats).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [format](image.md#format) = nullptr | Defines a pointer to the head of the format string.|
| [size](image.md#size-57) = 0 | Defines the size of the format string.|
The OhosImageSourceSupportedFormatList struct defines the format string list supported by an image source. It is obtained by calling [OH_ImageSource_GetSupportedFormats](image.md#oh_imagesource_getsupportedformats).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [supportedFormatList](image.md#supportedformatlist) = nullptr | Defines a double pointer to the head of the format string list.|
| [size](image.md#size-67) = 0 | Defines the size of the format string list.|
The **OhosImageSourceUpdateData** struct defines the update data option of the image source. It is obtained by calling [OH_ImageSource_UpdateData](image.md#oh_imagesource_updatedata).
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [buffer](image.md#buffer-22) = nullptr | Defines a pointer to the buffer for storing the update data.|
| [bufferSize](image.md#buffersize-22) = 0 | Defines the size of the buffer.|
| [offset](image.md#offset) = 0 | Defines the offset of the update data in the buffer.|
| [updateLength](image.md#updatelength) = 0 | Defines the length of the update data in the buffer.|
| [isCompleted](image.md#iscompleted) = 0 | Defines whether the image source data update is completed.|
| [OHOS::Media::OH_Image_InitImageNative](image.md#oh_image_initimagenative)(napi_env env, napi_value source) | Parses an **ImageNative** object from an **Image** object at the JavaScript native layer.|
| [OHOS::Media::OH_Image_ClipRect](image.md#oh_image_cliprect)(const[ImageNative](image.md#imagenative) \*native, struct [OhosImageRect](_o_h_o_s_1_1_media_1_1_ohos_image_rect.md)\*rect) | Obtains [OhosImageRect](_o_h_o_s_1_1_media_1_1_ohos_image_rect.md) of an **ImageNative** object.|
| [OHOS::Media::OH_Image_Size](image.md#oh_image_size)(const[ImageNative](image.md#imagenative) \*native, struct [OhosImageSize](_ohos_image_size.md)\*size) | Obtains [OhosImageSize](_ohos_image_size.md) of an **ImageNative** object.|
| [OHOS::Media::OH_Image_Format](image.md#oh_image_format)(const[ImageNative](image.md#imagenative) \*native, int32_t \*format) | Obtains the image format of an **ImageNative** object.|
| [OHOS::Media::OH_Image_GetComponent](image.md#oh_image_getcomponent)(const[ImageNative](image.md#imagenative) \*native, int32_t componentType, struct [OhosImageComponent](_o_h_o_s_1_1_media_1_1_ohos_image_component.md)\*componentNative) | Obtains [OhosImageComponent](_o_h_o_s_1_1_media_1_1_ohos_image_component.md) of an **ImageNative** object.|
| [OHOS::Media::OH_Image_Release](image.md#oh_image_release)([ImageNative](image.md#imagenative)\*native) | Releases an **ImageNative** object.|
| [OH_PixelMap_CreateAlphaPixelMap](image.md#oh_pixelmap_createalphapixelmap)(napi_env env, napi_value source, napi_value \*alpha) | Creates a **PixelMap** object that contains only alpha channel information.|
| [OH_PixelMap_InitNativePixelMap](image.md#oh_pixelmap_initnativepixelmap)(napi_env env, napi_value source) | Initializes a **PixelMap** object.|
| [OH_PixelMap_GetBytesNumberPerRow](image.md#oh_pixelmap_getbytesnumberperrow)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t \*num) | Obtains the number of bytes per row of a **NativePixelMap** object.|
| [OH_PixelMap_GetIsEditable](image.md#oh_pixelmap_getiseditable)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t \*editable) | Checks whether a **NativePixelMap** object is editable.|
| [OH_PixelMap_SetAlphaAble](image.md#oh_pixelmap_setalphaable)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t alpha) | Sets an alpha channel for a **NativePixelMap** object.|
| [OH_PixelMap_GetDensity](image.md#oh_pixelmap_getdensity)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t \*density) | Obtains the pixel density of a **NativePixelMap** object.|
| [OH_PixelMap_SetDensity](image.md#oh_pixelmap_setdensity)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t density) | Sets the pixel density for a **NativePixelMap** object.|
| [OH_PixelMap_SetOpacity](image.md#oh_pixelmap_setopacity)(const[NativePixelMap](image.md#nativepixelmap) \*native, float opacity) | Sets the opacity for a **NativePixelMap** object.|
| [OH_PixelMap_Crop](image.md#oh_pixelmap_crop)(const[NativePixelMap](image.md#nativepixelmap) \*native, int32_t x, int32_t y, int32_t width, int32_t height) | Crops a **NativePixelMap** object.|
| [OH_PixelMap_GetImageInfo](image.md#oh_pixelmap_getimageinfo)(const[NativePixelMap](image.md#nativepixelmap) \*native, [OhosPixelMapInfos](_ohos_pixel_map_infos.md)\*info) | Obtains the image information of a **NativePixelMap** object.|
| [OH_PixelMap_AccessPixels](image.md#oh_pixelmap_accesspixels)(const[NativePixelMap](image.md#nativepixelmap) \*native, void \*\*addr) | Obtains the memory address of a **NativePixelMap** object and locks the memory.|
| [OH_PixelMap_UnAccessPixels](image.md#oh_pixelmap_unaccesspixels)(const[NativePixelMap](image.md#nativepixelmap) \*native) | Unlocks the memory of a **NativePixelMap** object. This function is used with [OH_PixelMap_AccessPixels](image.md#oh_pixelmap_accesspixels) in pairs.|
| { [OHOS::Media::OHOS_IMAGE_RESULT_SUCCESS](image.md) = 0,<br>[OHOS::Media::OHOS_IMAGE_RESULT_BAD_PARAMETER](image.md) = -1 } | Enumerates the error codes returned by the functions.|
| [OH_GetImageInfo](image.md#oh_getimageinfo)(napi_env env, napi_value value, [OhosPixelMapInfo](_ohos_pixel_map_info.md)\*info) | Obtains the **PixelMap** information and stores the information to the [OhosPixelMapInfo](_ohos_pixel_map_info.md) structure. |
| [OH_AccessPixels](image.md#oh_accesspixels)(napi_env env, napi_value value, void \*\*addrPtr) | Obtains the memory address of the **PixelMap** object data and locks the memory. |
| [OH_UnAccessPixels](image.md#oh_unaccesspixels)(napi_env env, napi_value value) | Unlocks the memory of the **PixelMap** object data. This function is used with [OH_AccessPixels](image.md#oh_accesspixels) in pairs. |
### Variables
| Name | Description |
| Name| Description|
| -------- | -------- |
| [width](#width) | Image width, in pixels. |
| [height](#height) | Image height, in pixels. |
| [pixelFormat](#pixelformat) | Image format. |
| [editable](#editable) | Editing type of the image. |
| [alphaType](#alphatype) | Alpha type of the image. |
| [scaleMode](#scalemode) | Scale mode of the image. |
## Variable Description
### alphaType
```
uint32_t alphaType
```
**Description:**
Alpha type of the image.
### editable
```
uint32_t editable
```
**Description:**
Editing type of the image.
### height
```
uint32_t height
```
**Description:**
Image height, in pixels.
### pixelFormat
```
int32_t pixelFormat
```
**Description:**
Image format.
### scaleMode
```
uint32_t scaleMode
```
**Description:**
Scale mode of the image.
### width
```
uint32_t width
```
**Description:**
Image width, in pixels.
| [OHOS::Media::OH_GetImageInfo](image.md#oh_getimageinfo)(napi_env env, napi_value value, [OhosPixelMapInfo](_o_h_o_s_1_1_media_1_1_ohos_pixel_map_info.md)\*info) | Obtains the information about a **PixelMap** object and stores the information to the [OhosPixelMapInfo](_o_h_o_s_1_1_media_1_1_ohos_pixel_map_info.md) struct.|
| [OHOS::Media::OH_AccessPixels](image.md#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](image.md#oh_unaccesspixels)(napi_env env, napi_value value) | Unlocks the memory of a **PixelMap** object. This function is used with **OH_AccessPixels** in pairs.|
The **image_receiver_mdk.h** file declares the APIs for obtaining image data from the native layer.
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OhosImageReceiverInfo](_ohos_image_receiver_info.md) | Defines the information about an image receiver.|
### Types
| Name| Description|
| -------- | -------- |
| [ImageReceiverNative](image.md#imagereceivernative) | Defines the data type name of the image receiver at the native layer.|
| (\*[OH_Image_Receiver_On_Callback](image.md#oh_image_receiver_on_callback)) () | Defines the callbacks for the image interface at the native layer.|
### Functions
| Name| Description|
| -------- | -------- |
| [OH_Image_Receiver_CreateImageReceiver](image.md#oh_image_receiver_createimagereceiver)(napi_env env, struct [OhosImageReceiverInfo](_ohos_image_receiver_info.md) info, napi_value \*res) | Creates an **ImageReceiver** object at the application layer.|
| [OH_Image_Receiver_InitImageReceiverNative](image.md#oh_image_receiver_initimagereceivernative)(napi_env env, napi_value source) | Initializes an [ImageReceiverNative](image.md#imagereceivernative) object through an **ImageReceiver** object.|
| [OH_Image_Receiver_GetReceivingSurfaceId](image.md#oh_image_receiver_getreceivingsurfaceid)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, char \*id, size_t len) | Obtains the receiver ID through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_ReadLatestImage](image.md#oh_image_receiver_readlatestimage)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, napi_value \*image) | Obtains the latest image through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_ReadNextImage](image.md#oh_image_receiver_readnextimage)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, napi_value \*image) | Obtains the next image through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_On](image.md#oh_image_receiver_on)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, [OH_Image_Receiver_On_Callback](image.md#oh_image_receiver_on_callback) callback) | Registers an [OH_Image_Receiver_On_Callback](image.md#oh_image_receiver_on_callback) callback. This callback is triggered whenever a new image is received.|
| [OH_Image_Receiver_GetSize](image.md#oh_image_receiver_getsize)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, struct [OhosImageSize](_ohos_image_size.md)\*size) | Obtains the size of the image receiver through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_GetCapacity](image.md#oh_image_receiver_getcapacity)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, int32_t \*capacity) | Obtains the capacity of the image receiver through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_GetFormat](image.md#oh_image_receiver_getformat)(const[ImageReceiverNative](image.md#imagereceivernative) \*native, int32_t \*format) | Obtains the format of the image receiver through an [ImageReceiverNative](image.md#imagereceivernative) object.|
| [OH_Image_Receiver_Release](image.md#oh_image_receiver_release)([ImageReceiverNative](image.md#imagereceivernative)\*native) | Releases an [ImageReceiverNative](image.md#imagereceivernative) object.|
The **image_source_mdk.h** file declares the APIs for decoding an image source into a pixel map.
\@Syscap SystemCapability.Multimedia.Image
**Since**
10
**Related Modules**
[Image](image.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OhosImageRegion](_ohos_image_region.md) | Defines the region of an image source to decode.|
| [OhosImageSourceOps](_ohos_image_source_ops.md) | Defines the image source options.|
| [OhosImageDecodingOps](_ohos_image_decoding_ops.md) | Defines the options for decoding an image source.|
| [OhosImageSourceInfo](_ohos_image_source_info.md) | Defines the information about an image source.|
| [OhosImageSource](_ohos_image_source.md) | Defines the input resource of an image source. Only one type of resource is accepted at a time.|
| [OhosImageSourceDelayTimeList](_ohos_image_source_delay_time_list.md) | Defines the delay time list of an image source.|
| [OhosImageSourceSupportedFormat](_ohos_image_source_supported_format.md) | Defines the format string supported by an image source.|
| [OhosImageSourceSupportedFormatList](_ohos_image_source_supported_format_list.md) | Defines the format string list supported by an image source.|
| [OhosImageSourceProperty](_ohos_image_source_property.md) | Defines the property string (in key-value format) of an image source.|
| [OhosImageSourceUpdateData](_ohos_image_source_update_data.md) | Defines the update data of an image source.|
### Types
| Name| Description|
| -------- | -------- |
| [ImageSourceNative](image.md#imagesourcenative) | Defines an image source object at the native layer.|
### Functions
| Name| Description|
| -------- | -------- |
| [OH_ImageSource_Create](image.md#oh_imagesource_create)(napi_env env, struct [OhosImageSource](_ohos_image_source.md)\*src, struct [OhosImageSourceOps](_ohos_image_source_ops.md)\*ops, napi_value \*res) | Creates an **ImageSource** object at the JavaScript native layer based on the specified [OhosImageSource](_ohos_image_source.md) and [OhosImageSourceOps](_ohos_image_source_ops.md) structs.|
| [OH_ImageSource_CreateIncremental](image.md#oh_imagesource_createincremental)(napi_env env, struct [OhosImageSource](_ohos_image_source.md)\*source, struct [OhosImageSourceOps](_ohos_image_source_ops.md)\*ops, napi_value \*res) | Creates an **ImageSource** object at the JavaScript native layer based on the specified [OhosImageSource](_ohos_image_source.md) and [OhosImageSourceOps](_ohos_image_source_ops.md) structs. The image source data will be updated through **OH_ImageSource_UpdateData**.|
| [OH_ImageSource_GetSupportedFormats](image.md#oh_imagesource_getsupportedformats)(struct[OhosImageSourceSupportedFormatList](_ohos_image_source_supported_format_list.md) \*res) | Obtains all supported decoding formats.|
| \*[OH_ImageSource_InitNative](image.md#oh_imagesource_initnative)(napi_env env, napi_value source) | Converts an **ImageSource** object at the JavaScript native layer to an [ImageSourceNative](image.md#imagesourcenative) object.|
| [OH_ImageSource_CreatePixelMap](image.md#oh_imagesource_createpixelmap)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageDecodingOps](_ohos_image_decoding_ops.md)\*ops, napi_value \*res) | Decodes an **ImageSourceNative** object to obtain a **PixelMap** object at the JavaScript native layer based on the specified [OhosImageDecodingOps](_ohos_image_decoding_ops.md) struct.|
| [OH_ImageSource_CreatePixelMapList](image.md#oh_imagesource_createpixelmaplist)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageDecodingOps](_ohos_image_decoding_ops.md)\*ops, napi_value \*res) | Decodes an **ImageSourceNative** object to obtain all **PixelMap** objects at the JavaScript native layer based on the specified [OhosImageDecodingOps](_ohos_image_decoding_ops.md) struct.|
| [OH_ImageSource_GetDelayTime](image.md#oh_imagesource_getdelaytime)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageSourceDelayTimeList](_ohos_image_source_delay_time_list.md)\*res) | Obtains the delay time list from an **ImageSourceNative** object (such as GIF image source).|
| [OH_ImageSource_GetFrameCount](image.md#oh_imagesource_getframecount)(const[ImageSourceNative](image.md#imagesourcenative) \*native, uint32_t \*res) | Obtains the number of frames from an **ImageSourceNative** object.|
| [OH_ImageSource_GetImageInfo](image.md#oh_imagesource_getimageinfo)(const[ImageSourceNative](image.md#imagesourcenative) \*native, int32_t index, struct [OhosImageSourceInfo](_ohos_image_source_info.md)\*info) | Obtains image source information from an **ImageSourceNative** object by index.|
| [OH_ImageSource_GetImageProperty](image.md#oh_imagesource_getimageproperty)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageSourceProperty](_ohos_image_source_property.md)\*key, struct [OhosImageSourceProperty](_ohos_image_source_property.md)\*value) | Obtains the value of an image property from an **ImageSourceNative** object.|
| [OH_ImageSource_ModifyImageProperty](image.md#oh_imagesource_modifyimageproperty)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageSourceProperty](_ohos_image_source_property.md)\*key, struct [OhosImageSourceProperty](_ohos_image_source_property.md)\*value) | Modifies the value of an image property of an **ImageSourceNative** object.|
| [OH_ImageSource_UpdateData](image.md#oh_imagesource_updatedata)(const[ImageSourceNative](image.md#imagesourcenative) \*native, struct [OhosImageSourceUpdateData](_ohos_image_source_update_data.md)\*data) | Updates the data of an **ImageSourceNative** object.|
| [OH_ImageSource_Release](image.md#oh_imagesource_release)([ImageSourceNative](image.md#imagesourcenative)\*native) | Releases an **ImageSourceNative** object.|
### Variables
| Name| Description|
| -------- | -------- |
| \*[OHOS_IMAGE_PROPERTY_BITS_PER_SAMPLE](image.md#ohos_image_property_bits_per_sample) = "BitsPerSample" | Defines a pointer to bits per sample, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_ORIENTATION](image.md#ohos_image_property_orientation) = "Orientation" | Defines a pointer to the orientation, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_IMAGE_LENGTH](image.md#ohos_image_property_image_length) = "ImageLength" | Defines a pointer to the image length, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_IMAGE_WIDTH](image.md#ohos_image_property_image_width) = "ImageWidth" | Defines a pointer to the image width, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_GPS_LATITUDE](image.md#ohos_image_property_gps_latitude) = "GPSLatitude" | Defines a pointer to the GPS latitude, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_GPS_LONGITUDE](image.md#ohos_image_property_gps_longitude) = "GPSLongitude" | Defines a pointer to the GPS longitude, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_GPS_LATITUDE_REF](image.md#ohos_image_property_gps_latitude_ref) = "GPSLatitudeRef" | Defines a pointer to the GPS latitude reference information, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_GPS_LONGITUDE_REF](image.md#ohos_image_property_gps_longitude_ref) = "GPSLongitudeRef" | Defines a pointer to the GPS longitude reference information, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_DATE_TIME_ORIGINAL](image.md#ohos_image_property_date_time_original) = "DateTimeOriginal" | Defines a pointer to the created date and time, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_EXPOSURE_TIME](image.md#ohos_image_property_exposure_time) = "ExposureTime" | Defines a pointer to the exposure time, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_SCENE_TYPE](image.md#ohos_image_property_scene_type) = "SceneType" | Defines a pointer to the scene type, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_ISO_SPEED_RATINGS](image.md#ohos_image_property_iso_speed_ratings) = "ISOSpeedRatings" | Defines a pointer to the ISO speed ratings, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_F_NUMBER](image.md#ohos_image_property_f_number) = "FNumber" | Defines a pointer to the f-number of the image, one of the image properties.|
| \*[OHOS_IMAGE_PROPERTY_COMPRESSED_BITS_PER_PIXEL](image.md#ohos_image_property_compressed_bits_per_pixel) = "CompressedBitsPerPixel" | Defines a pointer to the compressed bits per pixel, one of the image properties.|
The **native_avscreen_capture.h** file declares the native APIs used to create an **OH_AVScreenCapture** instance.
**Since**
10
**Related Modules**
[AVScreenCapture](_a_v_screen_capture.md)
## Summary
### Functions
| Name| Description|
| -------- | -------- |
| [OH_AVScreenCapture_Create](_a_v_screen_capture.md#oh_avscreencapture_create)(void) | Creates an **OH_AVScreenCapture** instance.|
| [OH_AVScreenCapture_Init](_a_v_screen_capture.md#oh_avscreencapture_init)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, [OH_AVScreenCaptureConfig](_o_h___a_v_screen_capture_config.md) config) | Initializes parameters related to an **OH_AVScreenCapture** instance.|
| [OH_AVScreenCapture_StartScreenCapture](_a_v_screen_capture.md#oh_avscreencapture_startscreencapture)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Starts screen capture and collects original streams. After calling this function, the application can use the callback listeners **OH_AVScreenCaptureOnAudioBufferAvailable** and **OH_AVScreenCaptureOnVideoBufferAvailable** to check whether streams are generated.|
| [OH_AVScreenCapture_StopScreenCapture](_a_v_screen_capture.md#oh_avscreencapture_stopscreencapture)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Stops screen capture. This function is used in pair with **OH_AVScreenCapture_StartScreenCapture**. After calling this function, the application stops screen capture or screen share and releases the microphone.|
| [OH_AVScreenCapture_StartScreenRecording](_a_v_screen_capture.md#oh_avscreencapture_startscreenrecording)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Starts screen recording and collects encoded streams.<br>**NOTE**: This function is reserved and will be provided in later versions.|
| [OH_AVScreenCapture_StopScreenRecording](_a_v_screen_capture.md#oh_avscreencapture_stopscreenrecording)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Stops screen recording. This function is used in pair with **OH_AVScreenCapture_StartScreenRecording**.<br>**NOTE**: This function is reserved and will be provided in later versions.|
| [OH_AVScreenCapture_AcquireAudioBuffer](_a_v_screen_capture.md#oh_avscreencapture_acquireaudiobuffer)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, [OH_AudioBuffer](_o_h___audio_buffer.md)\*\*audiobuffer, [OH_AudioCaptureSourceType](_a_v_screen_capture.md#oh_audiocapturesourcetype) type) | Obtains an audio buffer. When calling this function, the application must allocate the memory of the corresponding struct size to the audio buffer.|
| [OH_AVScreenCapture_AcquireVideoBuffer](_a_v_screen_capture.md#oh_avscreencapture_acquirevideobuffer)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, int32_t \*fence, int64_t \*timestamp, struct [OH_Rect](_o_h___rect.md)\*region) | Obtains a video buffer. An application can call this function to obtain information such as the video buffer and timestamp.|
| [OH_AVScreenCapture_ReleaseAudioBuffer](_a_v_screen_capture.md#oh_avscreencapture_releaseaudiobuffer)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, [OH_AudioCaptureSourceType](_a_v_screen_capture.md#oh_audiocapturesourcetype) type) | Releases an audio buffer.|
| [OH_AVScreenCapture_ReleaseVideoBuffer](_a_v_screen_capture.md#oh_avscreencapture_releasevideobuffer)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Releases a video buffer.|
| [OH_AVScreenCapture_SetCallback](_a_v_screen_capture.md#oh_avscreencapture_setcallback)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, struct [OH_AVScreenCaptureCallback](_o_h___a_v_screen_capture_callback.md) callback) | Sets a callback to listen for available video buffers and audio buffers and errors that occur during the function calling.|
| [OH_AVScreenCapture_Release](_a_v_screen_capture.md#oh_avscreencapture_release)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture) | Releases an **OH_AVScreenCapture** instance. This function is used in pair with **OH_AVScreenCapture_Create**.|
| [OH_AVScreenCapture_SetMicrophoneEnabled](_a_v_screen_capture.md#oh_avscreencapture_setmicrophoneenabled)(struct[OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) \*capture, bool isMicrophone) | Enables or disables the microphone.|
| [OH_AudioEncInfo](_o_h___audio_enc_info.md) | Defines audio encoding information.<br>**NOTE**: This struct is reserved and will be provided in later versions.|
| [OH_VideoCaptureInfo](_o_h___video_capture_info.md) | Defines video capturing information.|
| [OH_VideoEncInfo](_o_h___video_enc_info.md) | Defines video encoding information.<br>**NOTE**: This struct is reserved and will be provided in later versions.|
| [OH_VideoInfo](_o_h___video_info.md) | Defines video capturing parameters.|
| [OH_AVScreenCaptureConfig](_o_h___a_v_screen_capture_config.md) | Defines the screen capture configuration.|
| [OH_AVScreenCaptureCallback](_o_h___a_v_screen_capture_callback.md) | Defines all the asynchronous callback function pointers of an **OH_AVScreenCapture** instance.|
| [OH_Rect](_o_h___rect.md) | Defines the width, height, and image information of the rectangle used for screen capture.|
| [OH_AudioBuffer](_o_h___audio_buffer.md) | Defines the configuration such as the size, type, and timestamp of audio data.|
### Types
| Name| Description|
| -------- | -------- |
| [OH_NativeBuffer](_a_v_screen_capture.md#oh_nativebuffer) | Defines the native video stream class for screen capture.|
| [OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture) | Defines a screen capture instance used to obtain original video and audio streams.|
| [OH_CaptureMode](_a_v_screen_capture.md#oh_capturemode) | Defines an enum that enumerates the screen capture modes.|
| [OH_AudioCaptureSourceType](_a_v_screen_capture.md#oh_audiocapturesourcetype) | Defines an enum that enumerates the audio source types during screen capture.|
| [OH_AudioCodecFormat](_a_v_screen_capture.md#oh_audiocodecformat) | Defines an enum that enumerates the audio encoding formats.|
| [OH_VideoCodecFormat](_a_v_screen_capture.md#oh_videocodecformat) | Defines an enum that enumerates the video encoding formats.|
| [OH_DataType](_a_v_screen_capture.md#oh_datatype) | Defines an enum that enumerates the data types of screen capture streams.|
| [OH_VideoSourceType](_a_v_screen_capture.md#oh_videosourcetype) | Defines an enum that enumerates the video source formats.|
| [OH_ContainerFormatType](_a_v_screen_capture.md#oh_containerformattype) | Defines an enum that enumerates the types of files generated during screen capture.<br>**NOTE**: This type is reserved and will be provided in later versions.|
| [OH_AudioEncInfo](_a_v_screen_capture.md#oh_audioencinfo) | Defines audio encoding information.<br>**NOTE**: This type is reserved and will be provided in later versions.|
| [OH_VideoCaptureInfo](_a_v_screen_capture.md#oh_videocaptureinfo) | Defines video capturing information.|
| [OH_VideoEncInfo](_a_v_screen_capture.md#oh_videoencinfo) | Defines video encoding information.<br>**NOTE**: This type is reserved and will be provided in later versions.|
| [OH_VideoInfo](_a_v_screen_capture.md#oh_videoinfo) | Defines video capturing parameters.|
| [OH_AVScreenCaptureConfig](_a_v_screen_capture.md#oh_avscreencaptureconfig) | Defines the screen recording configuration.|
| (\*[OH_AVScreenCaptureOnError](_a_v_screen_capture.md#oh_avscreencaptureonerror)) ([OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture)\*capture, int32_t errorCode) | Defines a pointer to a callback function that is called when an error occurs during the running of an **OH_AVScreenCapture** instance.|
| (\*[OH_AVScreenCaptureOnAudioBufferAvailable](_a_v_screen_capture.md#oh_avscreencaptureonaudiobufferavailable)) ([OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture)\*capture, bool isReady, [OH_AudioCaptureSourceType](_a_v_screen_capture.md#oh_audiocapturesourcetype) type) | Defines a pointer to a callback function that is called when an audio buffer is available during the running of an **OH_AVScreenCapture** instance.|
| (\*[OH_AVScreenCaptureOnVideoBufferAvailable](_a_v_screen_capture.md#oh_avscreencaptureonvideobufferavailable)) ([OH_AVScreenCapture](_a_v_screen_capture.md#oh_avscreencapture)\*capture, bool isReady) | Defines a pointer to a callback function that is called when a video buffer is available during the running of an **OH_AVScreenCapture** instance.|
| [OH_AVScreenCaptureCallback](_a_v_screen_capture.md#oh_avscreencapturecallback) | Defines all the asynchronous callback function pointers of an **OH_AVScreenCapture** instance.|
| [OH_Rect](_a_v_screen_capture.md#oh_rect) | Defines the width, height, and image information of the rectangle used for screen capture.|
| [OH_AudioBuffer](_a_v_screen_capture.md#oh_audiobuffer) | Defines the configuration such as the size, type, and timestamp of audio data.|
| [OH_DataType](_a_v_screen_capture.md#oh_datatype) { [OH_ORIGINAL_STREAM](_a_v_screen_capture.md) = 0, [OH_ENCODED_STREAM](_a_v_screen_capture.md) = 1, [OH_CAPTURE_FILE](_a_v_screen_capture.md) = 2, OH_INVAILD = -1 } | Enumerates the data sources of screen capture streams.|
| [OH_VideoSourceType](_a_v_screen_capture.md#oh_videosourcetype) { [OH_VIDEO_SOURCE_SURFACE_YUV](_a_v_screen_capture.md) = 0, [OH_VIDEO_SOURCE_SURFACE_ES](_a_v_screen_capture.md), [OH_VIDEO_SOURCE_SURFACE_RGBA](_a_v_screen_capture.md), [OH_VIDEO_SOURCE_BUTT](_a_v_screen_capture.md) } | Enumerates the video source formats.|
| [OH_ContainerFormatType](_a_v_screen_capture.md#oh_containerformattype) { [CFT_MPEG_4A](_a_v_screen_capture.md) = 0, [CFT_MPEG_4](_a_v_screen_capture.md) = 1 } | Enumerates the types of files generated during screen capture.<br>**NOTE**: This enum is reserved and will be provided in later versions.|
The **native_avscreen_capture_errors.h** file declares the error codes generated during screen capture.
**Since**
10
**Related Modules**
[AVScreenCapture](_a_v_screen_capture.md)
## Summary
### Types
| Name| Description|
| -------- | -------- |
| [OH_AVSCREEN_CAPTURE_ErrCode](_a_v_screen_capture.md#oh_avscreen_capture_errcode) | Defines an enum that enumerates the error codes generated during screen recording.|
