Function: dvpp_vpc_batch_crop_resize_async

C Prototype	*aclError acldvppVpcBatchCropResizeAsync(acldvppChannelDesc channelDesc, acldvppBatchPicDesc srcBatchPicDescs,* *uint32_t roiNums, uint32_t size, acldvppBatchPicDesc dstBatchPicDescs,* *acldvppRoiConfig cropAreas[], acldvppResizeConfig resizeConfig, aclrtStream stream)**
Python Function	ret = acl.media.dvpp_vpc_batch_crop_resize_async(dvpp_channel_desc, src_batch_pic_descs, roi_nums_list, dst_batch_pic_descs, crop_area_list, resize_config, stream)
Function Usage	Crops one or more selected ROIs from each input image and loads the crop ROIs to the destination areas. A crop ROI will be resized again if it has a different size from the destination image. The resizing algorithm specified in resize_config is used. 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 total value 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. resize_config: int, pointer address of the image resizing configuration data. Call acl.media.dvpp_create_resize_config to create an image resizing configuration in advance. 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.

Restrictions

Version	Restriction
Atlas 200/300/500 Inference Product Atlas Training Series Product	Input image resolution 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.

Version

Restriction

Atlas 200/300/500 Inference Product

Atlas Training Series Product

Input image resolution 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.

Parent topic: VPC