hi_vdec_get_pic_buf_size

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

The Atlas Training Series Product does not support this API.

Description

Obtains the buffer size required for image decoding. This API is used in the following scenarios: calculating the size of the internal buffer required for video decoding (configure the related channel parameters during initialization); calculating the output buffer for image decoding.

Restrictions

This API calculates the requested output buffer allocation.

Prototype

hi_u32 hi_vdec_get_pic_buf_size(hi_payload_type type, hi_pic_buf_attr *buf_attr)

Parameters

Parameter	Input/Output	Description
type	Input	Decode type, selected from HI_PT_H264, HI_PT_H265, and HI_PT_JPEG.
buf_attr	Input	Pointer to the image buffer information.

Returns

Image size required for image storage.

For HI_PT_JPEG decoding (using JPEGD), if pixel_format is set to an unsupported format or HI_PIXEL_FORMAT_UNKNOWN, 0 is returned.

Parent topic: VDEC/JPEGD