vdec_set_jpegd_precision_mode

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	√

Sets the alignment mode of the width and height of the JPEGD output image.

C Prototype

hi_u32 hi_mpi_vdec_set_jpegd_precision_mode(hi_vdec_chn chn, const hi_jpegd_precision_mode mode)

Python Function

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

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.
mode	Int, alignment mode for the width and height of the decoded JPEGD output image. For details, see hi_jpegd_precision_mode.

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.

mode

Int, alignment mode for the width and height of the decoded JPEGD output image. For details, see hi_jpegd_precision_mode.

Return Value	Description
ret	Int, error code. 0: success Other values: failures. For details, see VDEC/JPEGD Return Codes.

Before calling this API to set the alignment mode, ensure that a channel is created. Otherwise, the system returns the error code HI_ERR_VDEC_UNEXIST, indicating that no channel is created.
This API is valid only for JPEGD channels. For other channels, the system returns an error code indicating that the operation is not supported.
This API should be called before acl.himpi.vdec_start_recv_stream. Otherwise, the system returns an error code indicating that the operation is not allowed.

Parent topic: VDEC/JPEGD APIs