Function: vdec_set_channel_desc_out_mode

Applicability

Product	Supported
Ascend 950PR/Ascend 950DT	x
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Description

Sets the decoding channel description attribute: whether to output frames in real time.

Prototype

C Prototype

aclError aclvdecSetChannelDescOutMode(aclvdecChannelDesc *channelDesc, uint32_t outMode)

Python Function

ret = acl.media.vdec_set_channel_desc_out_mode(vdec_channel_desc, out_mode)

Parameters

Parameter	Description
vdec_channel_desc	Int, description of the video decoding channel. Call acl.media.vdec_create_channel_desc to create data of the aclvdecChannelDesc type in advance.
out_mode	int, setting whether to output frames in real time (that is, decoding one frame at a time, without the need to wait for subsequent frames). The options are as follows: 0: delayed frame output mode. VDEC starts to output the decoding result only after receiving multiple frames in the stream. 1: real-time frame output mode. VDEC starts to output the decoding result in real time after obtaining a frame in the stream. Only H.264/H.265 standard streams with simple reference relationships are supported (no long-term reference frames or B-frames).

Parameter

Description

vdec_channel_desc

Int, description of the video decoding channel.

Call acl.media.vdec_create_channel_desc to create data of the aclvdecChannelDesc type in advance.

out_mode

int, setting whether to output frames in real time (that is, decoding one frame at a time, without the need to wait for subsequent frames). The options are as follows:

0: delayed frame output mode. VDEC starts to output the decoding result only after receiving multiple frames in the stream.
1: real-time frame output mode. VDEC starts to output the decoding result in real time after obtaining a frame in the stream. Only H.264/H.265 standard streams with simple reference relationships are supported (no long-term reference frames or B-frames).

Return Value

Return Value	Description
ret	Int, error code. 0 on success; else, failure.

Parent topic: VDEC