hi_mpi_vdec_start_recv_stream

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

Starts receiving streams sent by the user after a channel is created and before decoding starts.

Prototype

hi_s32 hi_mpi_vdec_start_recv_stream(hi_vdec_chn chn)

Parameters

Parameter	Input/Output	Description
chn	Input	Decoding channel ID. Atlas 350 Accelerator Card: The value range is [0, 256). The maximum number of JPEGD channels is 256. Atlas A3 training product / Atlas A3 inference product : 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 product / Atlas A2 inference product : 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 product : 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 product : 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.

Parameter

Input/Output

Description

chn

Input

Decoding channel ID.

Atlas 350 Accelerator Card: The value range is [0, 256). The maximum number of JPEGD channels is 256.

Atlas A3 training product / Atlas A3 inference product : 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 product / Atlas A2 inference product : 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 product : 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 product : 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.

Returns

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

Restrictions

Ensure that a channel has been created. Otherwise, the error code HI_ERR_VDEC_UNEXIST is returned.
The hi_mpi_vdec_send_stream function can be invoked to send streams only after the stream receiving function is enabled.
Repeated calls to this API return successful responses.