acldvppVpcPyrDownAsync

The Atlas 200/300/500 Inference Product does not support this API.

The Atlas Training Series Product does not support this API.

Performs pyramid resizing to resize the output image to half the original size. This API is asynchronous.

Input image
- Input image resolution: [20 × 12, 2048 × 2048]
- Input image format: PIXEL_FORMAT_YUV_400
Output image
- Output image resolution: input image resolution/2
- Format: PIXEL_FORMAT_YUV_400
For details about the image alignment requirements for PIXEL_FORMAT_YUV_400 images, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.

aclError acldvppVpcPyrDownAsync(acldvppChannelDesc *channelDesc,

acldvppPicDesc *inputDesc,

acldvppPicDesc *outputDesc,

void *reserve,

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 description. 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 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).
reserve	Input	Pointer to the pyramid configuration parameter. This parameter is reserved.
stream	Input	Stream.

0 on successful task delivery; else, failure.

Parent topic: VPC