Function: dvpp_vpc_batch_crop_and_paste_async

C Prototype	aclError acldvppVpcBatchCropAndPasteAsync(acldvppChannelDesc channelDesc, acldvppBatchPicDesc* srcBatchPicDesc, uint32_t roiNums, uint32_t size, acldvppBatchPicDesc** dstBatchPicDesc, acldvppRoiConfig* cropAreas[], acldvppRoiConfig* pasteAreas[], aclrtStream* stream)
Python Function	dst_batch_pic_descs, ret = acl.media.dvpp_vpc_batch_crop_and_paste_async(dvpp_channel_desc, src_batch_pic_descs, roi_nums_list, dst_batch_pic_descs, crop_area_list, paste_area_list, stream)
Function Usage	Crops one or more ROIs from one or more images and pastes each 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. src_batch_pic_descs: int, pointer address of the description of batch input images. Call acl.media.dvpp_create_batch_pic_desc to create a description of a group of images. Call acl.media.dvpp_get_pic_desc to obtain the description of a specified image. Call the acl.media.dvpp_set_pic_desc APIs to set the image description (including the buffer address, buffer size, image format, and image resolution). roi_nums_list: list, list of number of cropped images, up to 256. The value of roi_nums_list is less than or equal to 256, which is the same as the value of batch_size in dst_batch_pic_descs. (roi_nums_list[0] + ... + roi_nums_list[size - 1] <= 256) dst_batch_pic_descs: int, pointer address of the description of batch output images. Call acl.media.dvpp_create_batch_pic_desc to create a description of a group of images. Call acl.media.dvpp_get_pic_desc to obtain the description of a specified image. Call the acl.media.dvpp_set_pic_desc APIs to set the image description (including the buffer address, buffer size, image format, and image resolution). crop_area_list: list, list of the position of the cropping area. Call acl.media.dvpp_create_roi_config to create an ROI configuration. The number of elements in crop_area and paste_area is the same as that of batch_size in dst_batch_pic_descs. paste_area_list: list, list 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. The number of elements in crop_area and paste_area is the same as that of batch_size in dst_batch_pic_descs. stream: int, stream.
Return Value	dst_batch_pic_descs: int, pointer address of the description of batch output images. ret: int, error code. 0 indicates the success of task delivery. Other values indicate the failure of task delivery.
Reference	For the API call example, see Sample Code for Image Cropping and Pasting (Single-Image, Multi-ROI).

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