Function: dvpp_jpeg_get_image_info_v2

Applicability

Product	Supported (√/x)
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Function Usage

Reads the width, height, color channel count, and format of a JPEG image from the memory 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)

Parameter Description

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

Return Value Description

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