acldvppVpcCropAsync

Crops a selected ROI from the input image and loads the cropped image to the output buffer. This API is asynchronous.

Model	Restrictions
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 × 6, 4096 × 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 within 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 resolution 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. The cropped image will be resized again if the size of cropArea is inconsistent with that of the canvas. The high-order filtering algorithm developed by Huawei is used by default. Because the crop ROI obtained by calling this API is directly used as the output image, its resolution must not be greater than 4096 x 4096.

Model

Restrictions

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 × 6, 4096 × 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 within 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 resolution 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.
The cropped image will be resized again if the size of cropArea is inconsistent with that of the canvas. The high-order filtering algorithm developed by Huawei is used by default.
Because the crop ROI obtained by calling this API is directly used as the output image, its resolution must not be greater than 4096 x 4096.

aclError acldvppVpcCropAsync(acldvppChannelDesc *channelDesc,

acldvppPicDesc *inputDesc,

acldvppPicDesc *outputDesc,

aclrtStream stream)

Parameter	Input/Output	Description
channelDesc	Input	Pointer to the channel description. Must be the same as the channelDesc argument passed to the acldvppCreateChannel call.
inputDesc	Input	Pointer to the input image information. Call acldvppCreatePicDesc to create an image description. Call acldvppSetPicDesc series to set the image description (including the buffer address, buffer size, image format, and image resolution).
outputDesc	Input/Output	Pointer to the output image description. When outputDesc is used as an input, the user needs to: Call acldvppCreatePicDesc to create an image description. Call acldvppSetPicDesc series to set the image description (including the buffer address, buffer size, image format, and image resolution).
cropArea	Input	Pointer to the crop ROI. Call acldvppCreateRoiConfig to create an ROI configuration.
stream	Input	Stream.

0 on successful task delivery; else, failure.