Function: dvpp_vpc_crop_and_paste_async

C Prototype	aclError acldvppVpcCropAndPasteAsync(acldvppChannelDesc channelDesc, acldvppPicDesc inputDesc, acldvppPicDesc outputDesc, acldvppRoiConfig cropArea, acldvppRoiConfig *pasteArea, aclrtStream stream)
Python Function	ret = acl.media.dvpp_vpc_crop_and_paste_async(dvpp_channel_desc, input_dvpp_pic_desc, output_dvpp_pic_desc, crop_area, paste_area, stream)
Function Usage	Crops a selected ROI from the input image and pastes the cropped image to the canvas for output. This API is asynchronous.
Input Description	dvpp_channel_desc: int, pointer address of the channel description. It must be the same as the dvpp_channel_desc argument passed to the acl.media.dvpp_create_channel call. input_dvpp_pic_desc: int, pointer address of the input image information. Call acl.media.dvpp_create_pic_desc to create an image description. Call the acl.media.dvpp_set_pic_desc APIs to set image description parameters (such as the image format, width, and height). output_dvpp_pic_desc: int, pointer address of the output image information. Call acl.media.dvpp_create_pic_desc to create an image description. Call the acl.media.dvpp_set_pic_desc APIs to set image description parameters (such as the image format, width, and height). crop_area: int, pointer address of the position of the cropping area. Call acl.media.dvpp_create_roi_config to create an ROI configuration. paste_area: int, pointer address of the position of the paste area. Call acl.media.dvpp_create_roi_config to create an ROI configuration. Round up the left offset of the paste ROI to the nearest multiple of 16. stream: int, stream object.
Return Value	ret: int, error code. 0 indicates the success of task delivery. Other values indicate the failure of task delivery.

Restrictions

Version	Restrictions
Atlas 200/300/500 Inference Product Atlas Training Series Product	Input image size and format: When the input image resolution is in the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported. When the width or height of the input image is in the range of (4096, 8192], the supported formats are as follows: The following enum values of acldvppPixelFormat are supported: PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1, // YUV420SP NV12 8bit PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2, // YUV420SP NV21 8bit For details about the output image size and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. When the width and height of the paste_area are different from those of the crop_area, the image is resized. The default resizing algorithm is the high-order filtering algorithm developed by Huawei.

Version

Restrictions

Atlas 200/300/500 Inference Product

Atlas Training Series Product

Input image size and format:
- When the input image resolution is in the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.
- When the width or height of the input image is in the range of (4096, 8192], the supported formats are as follows:
  The following enum values of acldvppPixelFormat are supported:
```
PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1,       // YUV420SP NV12 8bit   
PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2,       // YUV420SP NV21 8bit 
```
For details about the output image size and format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.
When the width and height of the paste_area are different from those of the crop_area, the image is resized. The default resizing algorithm is the high-order filtering algorithm developed by Huawei.

Parent topic: VPC