hi_mpi_vdec_set_jpegd_precision_mode

Applicability

Product	Supported
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	√
Atlas inference products	√
Atlas training products	☓

Description

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

Prototype

hi_s32 hi_mpi_vdec_set_jpegd_precision_mode(hi_vdec_chn chn, const hi_jpegd_precision_mode mode)

Parameters

Parameter	Input/Output	Description
chn	Input	Decoding channel ID. 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. 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 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.
mode	Input	Alignment mode of the width and height of the JPEGD output image.

Parameter

Input/Output

Description

chn

Input

Decoding channel ID.

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.

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 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.

mode

Input

Alignment mode of the width and height of the JPEGD output image.

Returns

0: success
Other values: failure. For details, see VDEC/JPEGD Return Codes.

Restrictions

Before calling this API to set the alignment mode, ensure that a channel has been created. Otherwise, the system returns the error code HI_ERR_VDEC_UNEXIST indicating no channels.
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 hi_mpi_vdec_start_recv_stream. Otherwise, the system returns an error code indicating that the operation is not allowed.

Parent topic: Video Decoder (VDEC) and JPEG Decoder (JPEGD)