acldvppJpegGetImageInfo

Applicability

Product	Supported
Atlas 350 Accelerator Card	☓
Atlas A3 training product/Atlas A3 inference product	√
Atlas A2 training product/Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	√
Atlas inference product	√
Atlas training product	√

Function Description

Reads the width, height, and color channel count from the buffer that stores the JPEG image data.

This API checks whether the image format supports decoding. If the image format does not support decoding, the API returns the ACL_ERROR_UNSUPPORTED_JPEG error code. For details about the error code, see aclError.

Prototype

aclError acldvppJpegGetImageInfo(const void *data,
uint32_t size,
uint32_t *width,
uint32_t *height,
int32_t *components)

Parameters

Parameter	Input/Output	Description
data	Input	Pointer to the address of the memory that stores the JPEG image.
size	Input	Buffer size in bytes.
width	Output	Pointer to the image width.
height	Output	Pointer to the image height.
components	Output	Pointer to the number of color channels.

Returns

If the value is 0, the information is obtained successfully. If the value is not 0, the information fails to be obtained. For details, see aclError.

Parent topic: JPEGD