vdec_start_recv_stream

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	√

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

C Prototype

        
             hi_s32 hi_mpi_vdec_start_recv_stream(hi_vdec_chn chn);

Python Function

        
             ret = acl.himpi.vdec_start_recv_stream(chn)

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

The channel passed to this API call must have been created. Otherwise, the error code HI_ERR_VDEC_UNEXIST is returned.
Insert this API call before the acl.himpi.vdec_send_stream call.
Repeated calls to this API return successful responses.

For the API call sequence, see JPEGE, and VENC.

Parent topic: VDEC/JPEGD APIs