aclvencGetChannelDesc Series

Applicable Products

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

Function

Obtains the description of a video encoding channel.

Prototype

uint32_t aclvencGetChannelDescChannelId(const aclvencChannelDesc *channelDesc)
uint64_t aclvencGetChannelDescThreadId(const aclvencChannelDesc *channelDesc)
aclvencCallback aclvencGetChannelDescCallback(const aclvencChannelDesc *channelDesc)
acldvppStreamFormat aclvencGetChannelDescEnType(const aclvencChannelDesc *channelDesc)
acldvppPixelFormat aclvencGetChannelDescPicFormat(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescPicWidth(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescPicHeight(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescKeyFrameInterval(const aclvencChannelDesc *channelDesc)
void *aclvencGetChannelDescBufAddr(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescBufSize(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescRcMode(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescSrcRate(const aclvencChannelDesc *channelDesc)
uint32_t aclvencGetChannelDescMaxBitRate(const aclvencChannelDesc *channelDesc)

Parameters

Parameter	Input/Output	Description
channelDesc	Input	Pointer to the description of a video encoding channel. Call aclvencCreateChannelDesc to create data of the aclvencChannelDesc type and call the aclvencSetChannelDesc series to set the description of a video encoding channel in advance.

Parameter

Input/Output

Description

channelDesc

Input

Pointer to the description of a video encoding channel.

Call aclvencCreateChannelDesc to create data of the aclvencChannelDesc type and call the aclvencSetChannelDesc series to set the description of a video encoding channel in advance.

Returns

Parameter	Description
channelId	Channel ID. Defaults to 0.
threadId	Callback thread ID.
callback	Encoding callback function. For details, see aclvencCallback.
enType	Video coding protocol. For details, see acldvppStreamFormat.
picFormat	Input image format. For details, see acldvppPixelFormat.
picWidth	Image width.
picHeight	Image height.
keyFrameInterval	Key frame interval. Must not be 0.
bufAddr	Buffer address of the encoding output.
bufSize	Size of the encoding output buffer, in bytes.
rcMode	Bit rate control mode. 1: variable bit rate (VBR) mode 2: constant bit rate (CBR) mode
srcRate	Frame rate of the input stream (FPS).
maxBitRate	Output bit rate (kbit/s).

Parent topic: aclvencChannelDesc