Function: dvpp_jpeg_get_image_info_v2

Applicability

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

Description

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

This API checks whether the image format supports decoding. For an unsupported stream, the API returns the error code ACL_ERROR_UNSUPPORTED_JPEG. See aclError for more details.

Prototype

C Prototype

aclError acldvppJpegGetImageInfoV2(const void *data, uint32_t size, uint32_t *width, uint32_t *height, int32_t *components, acldvppJpegFormat *format)

Python Function

width, height, components, format, ret = acl.media.dvpp_jpeg_get_image_info_v2(data, size)

Parameters

Parameter	Description
data	Int, pointer address of the memory location that stores the JPEG image data.
size	Int, memory size, in bytes.

Return Value

Return Value	Description
width	Int, pointer address of the image width.
height	Int, pointer address of the image height.
components	Int, pointer address of the number of color channels.
format	Int, pointer address of the JPEG source format.
ret	Int, error code. 0 on success; else, failure.

Parent topic: JPEGD