acldvppVpcCalcHistAsync

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

The Atlas Training Series Product does not support this API.

Obtains the distribution of color components of each pixel in an image. This API is asynchronous.

aclError acldvppVpcCalcHistAsync(acldvppChannelDesc *channelDesc,

acldvppPicDesc *srcPicDesc,

void *reserve,

aclrtStream stream)

Parameter	Input/Output	Description
channelDesc	Input	Pointer to channel description. Must be the same as the channelDesc argument passed to the acldvppCreateChannel call.
srcPicDesc	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). NOTE: When the image format is YUV440SP 8-bit or YVU440SP 8-bit, the Y component statistics are accurate, but the UV component statistics are inaccurate.
hist	Input/Output	Pointer to histogram description. Call acldvppCreateHist to create a histogram description in advance. Calling this API returns the pixel value distribution (0–255) of each color component of each image.
reserve	Input	Pointer to the histogram configuration. This parameter is reserved and can be set to NULL currently.
stream	Input	Stream.

0 on successful task delivery; else, failure.

Parent topic: VPC