hi_mpi_venc_get_h264_vui

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

Obtains the VUI configurations of an H.264 encoding channel.

Prototype

hi_s32 hi_mpi_venc_get_h264_vui(hi_venc_chn chn, hi_venc_h264_vui *h264_vui)

Parameters

Parameter	Input/Output	Description
chn	Input	Encoding channel ID. Atlas 200I/500 A2 inference product: The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128. For the Atlas inference product, the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.
h264_vui	Output	VUI attributes of an H.264 encoding channel.

Parameter

Input/Output

Description

chn

Input

Encoding channel ID.

Atlas 200I/500 A2 inference product: The value range of this parameter is [0, 128). The JPEGE, and VENC functions share the same channels, and the maximum number of channels is 128.

For the Atlas inference product, the value range of the encoding channel ID is [0, 256). The JPEGE and VENC functions share channels. The maximum number of channels is 256.

h264_vui

Output

VUI attributes of an H.264 encoding channel.

Returns

0: success
Other values: failure. For details, see VENC/JPEGE Return Codes.

Restrictions

This API must be called after an encoding channel is created and before the channel is destroyed.
It is recommended that this API be called after an encoding channel is created and before encoding is started, to reduce the number of the API calls during encoding.
It is recommended that this API be called only in an H.264 encoding channel.

Parent topic: Video Encoding (VENC) and JPEG Encoder (JPEGE)