sys_get_chn_csc_matrix

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

Obtains the CSC matrix parameters of a channel.

C Prototype

hi_s32 hi_mpi_sys_get_chn_csc_matrix(hi_mod_id mode, hi_s32 chn, hi_csc_matrix *csc_matrix, hi_csc_coefficient *csc_coefficient);

Python Function

csc_matrix, csc_coefficient, ret = acl.himpi.sys_get_chn_csc_matrix(mode, chn)

Parameter	Description
mode	Int, module ID, either HI_ID_VDEC or HI_ID_VPC.
chn	Int, channel ID. When mode is set to HI_ID_VDEC, check the value range of the chn parameter in vdec_create_chn for the channel ID range. When mode is set to HI_ID_VPC, check the value range of the chn parameter in vpc_create_chn for the channel ID range.

Parameter

Description

mode

Int, module ID, either HI_ID_VDEC or HI_ID_VPC.

chn

Int, channel ID.

When mode is set to HI_ID_VDEC, check the value range of the chn parameter in vdec_create_chn for the channel ID range.
When mode is set to HI_ID_VPC, check the value range of the chn parameter in vpc_create_chn for the channel ID range.

Return Value	Description
csc_matrix	Int, data standard of the CSC matrix. For details, see hi_csc_matrix.
csc_coefficient	Dict, CSC matrix parameter value. For details, see hi_csc_coefficient.
ret	Int, error code. 0: success. Other values: failures. For details, see Common Return Codes.

The channel passed to this API call must have been created.
If acl.himpi.sys_set_chn_csc_matrix has not been called to set the CSC matrix parameters, the default CSC matrix parameters following the BT.601 Wide standard are returned.

Parent topic: Common APIs