vdec_get_display_mode

Applicability

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

Function Usage

Obtains the display mode.

Prototype

C Prototype

hi_s32 hi_mpi_vdec_get_display_mode(hi_vdec_chn chn, hi_video_display_mode display_mode)

Python Function

mode, ret = acl.himpi.vdec_get_display_mode(chn)

Parameter Description

Parameter	Description
chn	Int, decoding channel ID. Atlas inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256. Atlas A2 training products/Atlas A2 inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256. Among them, a maximum of 256 JPEGD decoding channels and 32 VDEC decoding channels are supported. Atlas 200I/500 A2 inference products: The value range of this parameter is [0, 128). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 128. Atlas A3 training products/Atlas A3 inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256. Among them, a maximum of 256 JPEGD decoding channels and 32 VDEC decoding channels are supported.

Parameter

Description

chn

Int, decoding channel ID.

Atlas inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256.
Atlas A2 training products/Atlas A2 inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256. Among them, a maximum of 256 JPEGD decoding channels and 32 VDEC decoding channels are supported.
Atlas 200I/500 A2 inference products: The value range of this parameter is [0, 128). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 128.
Atlas A3 training products/Atlas A3 inference products: The value range of this parameter is [0, 256). The JPEGD and VDEC functions share the same channels, and the maximum number of channels is 256. Among them, a maximum of 256 JPEGD decoding channels and 32 VDEC decoding channels are supported.

Return Value Description

Return Value	Description
display_mode	Int, display mode. For details, see hi_video_display_mode.
ret	Int. 0: success Other values: failures. For details, see Common Return Codes and VDEC/JPEGD Return Codes.

Return Value

Description

display_mode

Int, display mode. For details, see hi_video_display_mode.

ret

Int.

0: success
Other values: failures. For details, see Common Return Codes and VDEC/JPEGD Return Codes.

Restrictions

Before obtaining the display mode, ensure that a channel is created. Otherwise, the error code HI_ERR_VDEC_UNEXIT is returned, indicating that no channel is created.

Parent topic: VDEC/JPEGD APIs