Device Network SDK Programming Manual(Decoder)

User Manual: Pdf

Open the PDF directly: View PDF .
Page Count: 43

Download
Open PDF In Browser	View PDF

Device Network SDK
Programming User Manual
V4.2

(For Decoder)

I
Device Network SDK User Manual

The information in this documentation is subject to change without notice and does not represent any
commitment on behalf of HIKVISION. HIKVISION disclaims any liability whatsoever for incorrect data
that may appear in this documentation. The product(s) described in this documentation are furnished
subject to a license and may only be used in accordance with the terms and conditions of such license.

Copyright © 2006-2012 by HIKVISION. All rights reserved.
This documentation is issued in strict confidence and is to be used only for the purposes for
which it is supplied. It may not be reproduced in whole or in part, in any form, or by any means
or be used for any other purpose without prior written consent of HIKVISION and then only on
the condition that this notice is included in any such reproduction. No information as to the
contents or subject matter of this documentation, or any part thereof, or arising directly or
indirectly therefrom, shall be given orally or in writing or shall be communicated in any manner
whatsoever to any third party being an individual, firm, or company or any employee thereof
without the prior written consent of HIKVISION. Use of this product is subject to acceptance of
the HIKVISION agreement required to use this product. HIKVISION reserves the right to make
changes to its products as circumstances may warrant, without notice.
This documentation is provided “as-is,” without warranty of any kind.
Please send any comments regarding the documentation to:
overseasbusiness@hikvision.com

Find out more about HIKVISION at www.hikvision.com

II
Device Network SDK User Manual

Index
1
2

SDK Overview ............................................................................................................................ 1
API Calling Procedure ................................................................................................................ 3
2.1
The Calling Procedure of Decoder ............................................................................... 3
2.2
Active Decoding Procedure ......................................................................................... 4
2.2.1
Decode Real-time Stream.................................................................................. 4
2.2.2
Remote File Playback ........................................................................................ 5
2.3
Passive Decoding Procedure ....................................................................................... 6
API Calling Example ................................................................................................................... 7
3.1
Example Code of Dynamic Decoding........................................................................... 7
3.1.1
Decode Real-time Stream.................................................................................. 7
3.1.2
Decode Remote File Recorded in the Device .................................................. 10
3.2
Example Code of Passive Decoding ........................................................................... 13
API Description ........................................................................................................................ 15
4.1
SDK Initialization........................................................................................................ 15
4.1.1
Initialize SDK: NET_DVR_Init ........................................................................... 15
4.1.2
Release SDK resource: NET_DVR_Cleanup ...................................................... 15
4.2
Get Error Message ..................................................................................................... 15
4.2.1
Get the error code of last operation: NET_DVR_GetLastError ........................ 15
4.2.2
Get the error message of last operation: NET_DVR_GetErrorMsg ................. 16
4.3
Login the Device ........................................................................................................ 16
4.3.1
Loin the device: NET_DVR_Login_V30 ............................................................ 16
4.3.2
Logout: NET_DVR_Logout ............................................................................... 16
4.4
Get the capability set of the device .......................................................................... 17
4.4.1
Get the capability set: NET_DVR_GetDeviceAbility ........................................ 17
4.5
Configuration and Control of the Display Channel .................................................... 18
4.5.1
Get the information of display channel: NET_DVR_MatrixGetDisplayCfg_V41 ..
......................................................................................................................... 18
4.5.2
Configure the display channel: NET_DVR_MatrixSetDisplayCfg_V41 ............. 18
4.5.3
Control the display channel: NET_DVR_MatrixDiaplayControl ....................... 18
4.6
Parameter Configuration ........................................................................................... 19
4.6.1
Get configuration of the device: NET_DVR_GetDVRConfig............................. 19
4.6.2
Set the parameters of the device: NET_DVR_SetDVRConfig ........................... 20
4.7
Function about Decoding Channel ............................................................................ 20
4.7.1
Get the configuration of decoding channel: NET_DVR_MatrixGetDecChanCfg ..
......................................................................................................................... 20
4.7.2
Configure the decoding channel: NET_DVR_MatrixSetDecChanCfg ............... 21
4.7.3
Get the video format of the decoding channel:
NET_DVR_MatrixGetVideoStandard ............................................................................... 21
4.7.4
Set the video format of the decoding channel:
NET_DVR_MatrixSetVideoStandard ............................................................................... 21
4.7.5
Get the status of current decoding channel:

III
Device Network SDK User Manual

NET_DVR_MatrixGetDecChanStatus............................................................................... 22
4.7.6
Get the switch of the decoding channel: NET_DVR_MatrixGetDecChanEnable .
......................................................................................................................... 22
4.7.7
Set the switch of the decoding channel: NET_DVR_MatrixSetDecChanEnable ..
......................................................................................................................... 22
4.8
Active Decoding......................................................................................................... 23
4.8.1
Start dynamic decoding: NET_DVR_MatrixStartDynamic_V30 ....................... 23
4.8.2
Stop dynamic decoding: NET_DVR_MatrixStopDynamic ................................ 23
4.8.3
Get the information of circle decoding channel:
NET_DVR_MatrixGetLoopDecChanInfo_V30 .................................................................. 24
4.8.4
Set the circle decoding channel: NET_DVR_MatrixSetLoopDecChanInfo_V30 ...
......................................................................................................................... 24
4.8.5
Get the circle switch of the decoding channel:
NET_DVR_MatrixGetLoopDecChanEnable ...................................................................... 25
4.8.6
Set the circle switch of the decoding channel:
NET_DVR_MatrixSetLoopDecChanEnable ...................................................................... 25
4.8.7
Set the circle switch of all decoding channels:
NET_DVR_MatrixGetLoopDecEnable .............................................................................. 26
4.8.8
Get the information of current decoding channel:
NET_DVR_MatrixGetDecChanInfo_V30 .......................................................................... 26
4.8.9
Configure the playback of remote files: NET_DVR_MatrixSetRemotePlay ..... 26
4.8.10 Control the playback of remote files: NET_DVR_MatrixSetRemotePlayControl .
......................................................................................................................... 27
4.8.11 Get the status of playback: NET_DVR_MatrixGetRemotePlayStatus .............. 28
4.9
Passive Decoding ....................................................................................................... 28
4.9.1
Start passive decoding: NET_DVR_MatrixStartPassiveDecode ....................... 28
4.9.2
Send data to the passive decoding channel: NET_DVR_MatrixSendData ....... 29
4.9.3
Stop the passive decoding: NET_DVR_MatrixStopPassiveDecode .................. 29
4.9.4
Get status of the passive decoding: NET_DVR_MatrixGetPassiveDecodeStatus
......................................................................................................................... 29
4.9.5
Control of the passive decoding: NET_DVR_MatrixPassiveDecodeControl .... 30
4.10
Upload the LOGO and Control Its Display.................................................................. 30
4.10.1 Upload the LOGO: NET_DVR_UploadLogo ...................................................... 30
4.10.2 Display control of the LOGO: NET_DVR_LogoSwitch ....................................... 30
4.11
Transparent Channel ................................................................................................. 31
4.11.1 Get the information of transparent channel:
NET_DVR_MatrixGetTranInfo_V30 ................................................................................. 31
4.11.2 Set the transparent channel: NET_DVR_MatrixSetTranInfo_V30 ................... 31
4.12
Device Status ............................................................................................................. 32
4.12.1 Get the status of the device: NET_DVR_MatrixGetDeviceStatus_V41............ 32
Macro Definition of Error Code ............................................................................................... 33
5.1
Error code of network communication library .......................................................... 33
5.2
Error code of RTSP communication library ............................................................... 37
5.3
Error code of software decoding library ................................................................... 38

1
Device Network SDK User Manual

1 SDK Overview
The device network SDK is developed based on private network communication protocol,
and it is designed for the remote connection and configuration of embedded devices. This
document is mainly for decoder, and the main device types are listed as below:
DS-6300D(-JX), DS-6400HD(-JX/-T) series decoder
This document introduces only the major function supported by decoder, and please get
more information about other function and related structures from “Device Network SDK
Programming Manual.chm”.
The device network SDK has both Windows and Linux version.
1. Windows version supports Windows7/XP/2000/2003/Vista(32bit), and it has the files:
Network

HCNetSDK.h

head file

Communication

HCNetSDK.lib

LIB file

Library

HCNetSDK.dll

DLL file

Qos Library

QosControl.dll

DLL file

StreamTransClient.dll

DLL file

PlayM4.h

head file

PlayCtrl.lib

LIB file

PlayCtrl.dll

DLL file

SystemTransform.dll

DLL file

DataType.h

head file

RTSP Communication
Library

Software Decode
Library

Encapsulation
Transformation
Library

Hardware decode

and DecodeCardSdk.h

Library

DsSdk.lib

LIB file

DsSdk.dll

DLL file

2. Linux version supports the system(32bit) that gcc-v is 4.1 or above. The tested system
have RedHat AS 5/6, (Fedora)FC10/12, CentOS 5, SUSE 10, openSUSE 11, and Ubuntu 9.04/10.04.
The SDK has the files:
Network

hcnetsdk.h

head file

libhcnetsdk.so

SO file

Communication
Library

2
Device Network SDK User Manual
Qos Library

libQosControl.so

SO file

libStreamTransClient.so

SO file

Software Decode

playsdkpu.h

head file

Library

libm4play.so

SO file

libSystemTransform.so

SO file

RTSP Communication
Library

Encapsulation
Transformation
Library

HCNetSDK is required to be loaded for client development, and the other '.dll' files are
optional components.








The Network Communication Library is the main functional part of the device network SDK.
It is used for communication between the client and devices, including remote control &
configuration, video stream acquiring and handling, etc; and Network communication library
will dynamically loading RTSP communication library, Software decoding library, Hardware
decoding library, etc. Network communication library combines a lot of functions from the
Software decoding library and Hardware decoding library to facilitate the programming work.
However, it is suggested the users to get video stream from 'HCNetSDK.dll', and call relative
APIs in the Software decoding library or Hardware decoding library directly if you want to
build a system with more complete functions, or in a more flexible way.
The 'QosControl' library is stream bitrate control library, used for push mode SDK.
RTSP Communication Library only supports IP devices. Users need to load this component
for operations like streaming from products which support RTSP protocol.
Software Decoding Library is used for decoding real-time video stream (remote live view),
playback files, etc. It has included standard stream decoding function. If users needs to play
real-time stream or recoding data and display(i.e. the second structure parameter play
handle of NET_DVR_RealPlay_V30 interface set to effective), must load this component.
However, if users just need to use it for capturing data, then do external operation, needn't
load this component, this way is more flexible.
Encapsulation transformation library function can be divided into two pieces: one is
converting standard stream data to private encapsulation format stream data. When users
need to capture private format stream data from products supporting RTSP protocol(that is
setting callback function of NET_DVR_RealPlay_V30 interface for capturing data or call
NET_DVR_SetRealDataCallBack interface to capture data), must load this component.
Another is converting standard stream data to other package format, such as 3GPP,PS and so
on. For example, when users need to capture specific package format real-time stream data
from products supporting RTSP protocol(corresponding interface is NET_DVR_SaveRealData),
must load this component.
Hardware Decoding Library can only be used when there is MDI card installed in the PC, and
it can output video or video matrix to analog monitors. For decoder, this library is not
required.

3
Device Network SDK User Manual

2 API Calling Procedure
Notes: The part in dashed box is optional and will not affect the function and use of other
process and modules.

2.1 The Calling Procedure of Decoder

Fuction modules of multi-channel decoder include display channel control, parameter
configuration, dynamic decoding, passive decoding, transparent channel configuration, getting
device status information and getting device capability set modules. All modules need to register
user to the device, and the user ID returned from NET_DVR_Login_V30 is used as parameter of
other APIs.







Display channel control module: configuration of each parameter of display channel, audio
turn on & off, and zoom control of child window. For details, please refer to "Configuration
and Control of Display Channel".
Parameter configuration module: to configure the basic parameters of the multi-channel
decoder, the related APIs: NET_DVR_GetDVRConfig and NET_DVR_SetDVRConfig. For details,
please refer to “Parameter Configuration”.
Active decoding module: the decoder gets the stream data from encoder devices actively,
then decodes the data. The related function has: 1) get the parameter of dynamic decoding;
2)control the decoding, including the starting and stopping the dynamic decoding and circle
decoding, controlling the playback of remote files, and getting the status of decoding; 3)
upload LOGO to the decoder. For details, please refer to “Active Decoding Procedure”.
Passive decoding module: start decoding, send data and stop decoding of passive decoding
channels. For details, please refer to “Passive Decoding Procedure”.
Transparent channel configuration module: configure related parameters of transparent

4
Device Network SDK User Manual




channel. For details, please refer to “Transparent Channel Configuration”.
Get device status information: It supports to get the status information of decoding, alam
input, alarm output, and voice talk by calling NET_DVR_MatrixGetDeviceStatus_V41.
Get device capability set: It supports to get the capability information ofdisplay and
decoding by calling NET_DVR_GetDeviceAbility.

2.2 Active Decoding Procedure
2.2.1 Decode Real-time Stream



After login the decoder, it requires to set the display channel firstly. Please set the decoding
channel associated with the display channel, otherwise, it is not able to start decoding

5
Device Network SDK User Manual




normally. The related APIs: NET_DVR_MatrixGetDisplayCfg_V41,
NET_DVR_MatrixSetDisplayCfg_V41.
Call NET_DVR_MatrixStartDynamic_V30 to start dynamic decoding, the decoder will get
stream form the encoder device and decode the data.
It supports to set circle decoding, by calling NET_DVR_MatrixSetLoopDecChanInfo_V30 to
set circle group and calling NET_DVR_MatrixSetLoopDecChanEnable to start circle decoding.

Example Code

2.2.2 Remote File Playback



Example Code

6
Device Network SDK User Manual

2.3 Passive Decoding Procedure



After login the decoder, it requires to set the display channel firstly. Please set the decoding
channel associated with the display channel, otherwise, it is not able to start decoding
normally. The related APIs: NET_DVR_MatrixGetDisplayCfg_V41,
NET_DVR_MatrixSetDisplayCfg_V41.
After calling NET_DVR_MatrixStartPassiveDecode to start passive decoding, please call
NET_DVR_MatrixSendData to send data to the decoding channel. The data to be decoded
can be get from remote device or read from record file, and the size of data for each sending
should be less than 30K bytes.
Decoding control: pause, fast play, slow play, open or close sound, clear buffer, and so on.
Related APIs: NET_DVR_MatrixPassiveDecodeControl.

Example Code

7
Device Network SDK User Manual

3 API Calling Example
3.1 Example Code of Dynamic Decoding
3.1.1 Decode Real-time Stream
Related procedure chart
#include
#include
#include "Windows.h"
#include "HCNetSDK.h"
using namespace std;
void main() {
//--------------------------------------//Initialize SDK
NET_DVR_Init();
//Set connect time and reconnect time
NET_DVR_SetConnectTime(2000, 1);
NET_DVR_SetReconnect(10000, true);
//--------------------------------------// Login the device (Login the decoder)
NET_DVR_DEVICEINFO_V30 struDeviceInfo;
memset(&struDeviceInfo, 0, sizeof(NET_DVR_DEVICEINFO_V30)); //The structure to save device information
LONG lUserID = NET_DVR_Login_V30("172.0.0.100", 8000, "admin", "12345", &struDeviceInfo);
if (lUserID < 0)
{
if (NET_DVR_GetLastError() == NET_DVR_PASSWORD_ERROR)//Password error
{
…… //Handle the error message
}
else if(NET_DVR_GetLastError() == NET_DVR_OVER_MAXLINK)
//The count of connection to the device over the limit
{
…… // Handle the error message
}
…… // Handle other error message
}

8
Device Network SDK User Manual
//Get display capability of the decoder
NET_DVR_MATRIX_ABILITY m_matrixability;
NET_DVR_GetDeviceAbility(lUserID, MATRIXDECODER_ABILITY, NULL, 0, (char*)&m_matrixability,
sizeof(NET_DVR_MATRIX_ABILITY));
//Configure the display channel
DWORD DispChanNum=1;//Display channel, can get it from capability set
NET_DVR_MATRIX_VOUTCFG VoutCfg;
if(!NET_DVR_MatrixGetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{
…… // Handle the error message
}
VoutCfg.dwWindowMode = 4; //Set window to 4 screens
VoutCfg.byJoinDecChan[0] = 1;
//The decoding channel associated with the upper left screen is set to channel 1
…… //To set other display channels
if(!NET_DVR_MatrixSetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{
…… // Handle the error message
}
//Active decoding(includes dynamic decoding and circle decoding)
int DecChanNum = 1;//Decoding channel number
DWORD dec = 0;
if(!NET_DVR_MatrixGetDecChanEnable(lUserID, DispChanNum, &dec)) //Get the switch of decoding channels
{
…… // Handle the error message
}
dec = 1; //Open the decoding channel: 0- close, 1- open
if(!NET_DVR_MatrixSetDecChanEnable(lUserID, DecChanNum, dec))
// Set the switch of decoding channels, if set to close, the channel will stop decoding
{
…… // Handle the error message
}
// Dynamic decoding
NET_DVR_PU_STREAM_CFG dt;
dt.struDevChanInfo.struIP.sIpV4 = "172.0.0.101";//IP address of front-end device(encoder device)
dt.struDevChanInfo.wDVRPort = 8000; //Port number of front-end device
dt.struDevChanInfo.byChannel = 1;//Channel number
dt.struStreamMediaSvrCfg.byValid = 0;
//Whether enable to get stream from stream server: 0- disable, not 0-enable

9
Device Network SDK User Manual
…… //Set other parameters of dynamic decoding
if(!NET_DVR_MatrixStartDynamic_V30(lUserID, DecChanNum, &dt))

//Start dynamic decoding

{
CString tmp;
tmp.Format("Error: NET_DVR_MatrixStartDynamic = %d\n", NET_DVR_GetLastError());
//Get error code
AfxMessageBox(tmp);
}
//Get decoding status
NET_DVR_MATRIX_DEC_CHAN_STATUS m_DecChanStatus;
memset(&m_DecChanStatus, 0, sizeof(NET_DVR_MATRIX_DEC_CHAN_STATUS));
if(!NET_DVR_MatrixGetDecChanStatus(lUserID, DecChanNum, &m_DecChanStatus))
//Get the status of the decoding channel
{
…… // Handle the error message
}
NET_DVR_MATRIX_DEC_CHAN_INFO_V30

m_DecChanInfo;

memset(&m_DecChanInfo, 0, sizeof(NET_DVR_MATRIX_DEC_CHAN_INFO_V30));
if(!NET_DVR_MatrixGetDecChanInfo_V30(lUserID, DecChanNum, &m_DecChanInfo))
//Get the information of the decoding channel
{
…… // Handle the error message
}
//Other operation
if(!NET_DVR_MatrixStopDynamic(lUserID, DecChanNum)) //Stop dynamic decoding
{
CString tmp;
tmp.Format("Error: NET_DVR_MatrixStartDynamic = %d\n", NET_DVR_GetLastError());
//Get error code
AfxMessageBox(tmp);
}
//Loop decoding
NET_DVR_MATRIX_LOOP_DECINFO_V30

m_MatLoopDec;

memset(&m_MatLoopDec, 0, sizeof(NET_DVR_MATRIX_LOOP_DECINFO_V30));
NET_DVR_MatrixGetLoopDecChanInfo_V30(lUserID, DecChanNum, &m_MatLoopDec);
//Get parameters of loop decoding channel
CString m_DVRIP = "172.0.0.101";
sprintf(m_MatLoopDec.struchanConInfo.struDecChanInfo.struIP.sIpV4,"%s", m_DVRIP);

10
Device Network SDK User Manual
//IP address of the device to be decoded
…… // Set other parameters of loop decoding channel
NET_DVR_MatrixSetLoopDecChanInfo_V30 (lUserID, DecChanNum, &m_MatLoopDec);
//Set the parameter of loop decoding channel
DWORD chanNum = 0；
NET_DVR_MatrixGetLoopDecChanEnable(lUserID, DecChanNum, &chanNum);
//Get decoding switch of current channel, if chanNum=0, it is closed; if

chanNum=1, it is open

chanNum = 1; //Open switch of decoding
NET_DVR_MatrixSetLoopDecChanEnable(lUserID, DecChanNum, chanNum);
/*Close the switch of current decoding channel. If the loop switch is closed, the decoding channel stopped the
loop and switch to dynamic decoding*/
NET_DVR_MatrixGetLoopDecEnable(lUserID, &chanNum);
//Get the decoding switch of all channels, indicated by byte: 0- closed, 1- open
// E.g. chanNum&0x01==0 means the channel no.1 is closed
dec = 0; //Close the decoding channel: 0- close, 1- open
if(!NET_DVR_MatrixSetDecChanEnable(lUserID, DecChanNum, dec))
// Set the switch of decoding channels, the channel stops decoding
{
…… // Handle the error message
}
// Logout
NET_DVR_Logout(lUserID);
// Release SDK resource
NET_DVR_Cleanup();
return;
}

3.1.2 Decode Remote File Recorded in the Device
Related procedure chart
#include
#include
#include "Windows.h"
#include "HCNetSDK.h"
using namespace std;
void main() {
//---------------------------------------

11
Device Network SDK User Manual
//Initialize SDK
NET_DVR_Init();
//Set connect time and reconnect time
NET_DVR_SetConnectTime(2000, 1);
NET_DVR_SetReconnect(10000, true);
//--------------------------------------// Login the device
NET_DVR_DEVICEINFO_V30 struDeviceInfo;
memset(&struDeviceInfo, 0, sizeof(NET_DVR_DEVICEINFO_V30));//The structure to save device information
LONG lUserID = NET_DVR_Login_V30("172.0.0.100", 8000, "admin", "12345", &struDeviceInfo);
if (lUserID < 0)
{
if (NET_DVR_GetLastError() == NET_DVR_PASSWORD_ERROR)//Password error
{
…… // Handle the error message
}
else if(NET_DVR_GetLastError() == NET_DVR_OVER_MAXLINK)
// The count of connection to the device over the limit
{
…… // Handle the error message
}
…… // Handle other error message
}
// Get display capability of the decoder
NET_DVR_MATRIX_ABILITY m_matrixability;
NET_DVR_GetDeviceAbility(lUserID, MATRIXDECODER_ABILITY, NULL, 0, (char*)&m_matrixability,
sizeof(NET_DVR_MATRIX_ABILITY));
// Configure the display channel
DWORD DispChanNum=1;// Display channel, can get it from capability set
NET_DVR_MATRIX_VOUTCFG VoutCfg;
if(!NET_DVR_MatrixGetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{
…… // Handle the error message
}
VoutCfg.dwWindowMode = 1; // Set window to 4 screens
VoutCfg.byJoinDecChan[0] = 1;
//The decoding channel associated with the upper left screen is set to channel 1
…… //To set other display channels
if(!NET_DVR_MatrixSetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{

12
Device Network SDK User Manual
…… // Handle the error message
}
int DecChanNum = 1; //Decoding channel number
if(!NET_DVR_MatrixGetDecChanEnable(lUserID, DispChanNum, &dec)) //Get the switch of decoding channels
{
…… // Handle the error message
}
dec = 1; //Open the decoding channel: 0- close, 1- open
if(!NET_DVR_MatrixSetDecChanEnable(lUserID, DecChanNum, dwEnable))
// Set the switch of decoding channels, if set to close, the channel will stop decoding
{
…… // Handle the error message
}
//Playback remote file in the front-end device (encoder device)
NET_DVR_MATRIX_DEC_REMOTE_PLAY m_struPlay;
m_struPlay. sDVRIP = "172.0.0.101"; //IP address of front-end device(encoder device)
m_struPlay.wDVRPort = m_PlayBackPort; //Port number of front-end device
m_struPlay.byChannel = (BYTE)m_PlayBackChan; //Channel number of the front-end device to be decoded
…… //Set other parameters of playback
NET_DVR_MatrixSetRemotePlay(lUserID, DecChanNum, &m_struPlay); //Configure the remote playback
//Start playback
NET_DVR_MatrixSetRemotePlayControl(lUserID, DecChanNum, NET_DVR_PLAYSTART, 0, NULL);
//Open sound
NET_DVR_MatrixSetRemotePlayControl(lUserID, DecChanNum, NET_DVR_PLAYSTARTAUDIO, 0, NULL);
NET_DVR_MatrixSetRemotePlayControl(lUserID, DecChanNum, …, 0, NULL);//Other playback control
NET_DVR_MATRIX_DEC_REMOTE_PLAY_STATUS m_struState;
NET_DVR_MatrixGetRemotePlayStatus(lUserID, DecChanNum, &m_struState); //Get playback status
//Stop decoding
NET_DVR_MatrixSetRemotePlayControl(lUserID, DecChanNum, NET_DVR_PLAYSTOP, 0, NULL);
//Logout
NET_DVR_Logout(lUserID);
// Release SDK resource
NET_DVR_Cleanup();
return;
}

13
Device Network SDK User Manual

3.2 Example Code of Passive Decoding
Related procedure chart
#include
#include
#include "Windows.h"
#include "HCNetSDK.h"
using namespace std;
void main() {
//--------------------------------------//Initialize SDK
NET_DVR_Init();
//Set connect time and reconnect time
NET_DVR_SetConnectTime(2000, 1);
NET_DVR_SetReconnect(10000, true);
//--------------------------------------// Login the device
NET_DVR_DEVICEINFO_V30 struDeviceInfo;
memset(&struDeviceInfo, 0, sizeof(NET_DVR_DEVICEINFO_V30)); //The structure to save device information
LONG lUserID = NET_DVR_Login_V30("172.0.0.100", 8000, "admin", "12345", &struDeviceInfo);
if (lUserID < 0)
{
if (NET_DVR_GetLastError() == NET_DVR_PASSWORD_ERROR) //Password error
{
…… // Handle the error message
}
else if(NET_DVR_GetLastError() == NET_DVR_OVER_MAXLINK)
//The count of connection to the device over the limit
{
…… // Handle the error message
}
……// Handle other error message
}
//Get display capability of the decoder
NET_DVR_MATRIX_ABILITY m_matrixability;
NET_DVR_GetDeviceAbility(lUserID, MATRIXDECODER_ABILITY, NULL, 0, (char*)&m_matrixability,
sizeof(NET_DVR_MATRIX_ABILITY));
//Configure the display channel
DWORD DispChanNum=1; //Display channel, can get it from capability set
NET_DVR_MATRIX_VOUTCFG VoutCfg;

14
Device Network SDK User Manual
if(!NET_DVR_MatrixGetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{
…… // Handle the error message
}
VoutCfg.dwWindowMode = 1; //Set window to 4 screens
VoutCfg.byJoinDecChan[0] = 1;
//The decoding channel associated with the upper left screen is set to channel 1
……//To set other display channels
if(!NET_DVR_MatrixSetDisplayCfg_V41(lUserID, DecChanNum, &VoutCfg))
{
…… // Handle the error message
}
int DecChanNum = 1;// Decoding channel number
if(!NET_DVR_MatrixGetDecChanEnable(lUserID, DispChanNum, &dec)) // Get the switch of decoding channels
{
…… // Handle the error message
}
dec = 1; // Open the decoding channel: 0- close, 1- open
if(!NET_DVR_MatrixSetDecChanEnable(lUserID, DecChanNum, dwEnable))
// Set the switch of decoding channels, if set to close, the channel will stop decoding
{
…… // Handle the error message
}
//Passive decoding
DWORD m_PassivePort = 8000;
LONG lPassiveModeHandle = -1; //The handle of passive decoding
NET_DVR_MATRIX_PASSIVEMODE m_PassiveMode;
m_PassiveMode.wPassivePort = m_PassivePort;
//The port number of UDP, when the transmission mode is TCP, it is defaulted to 8000.
…… //Other parameters of passive decoding
lPassiveModeHandle = NET_DVR_MatrixStartPassiveDecode(lUserID, DecChanNum, &m_PassiveMode);
//Start passive decoding
NET_DVR_MatrixSendData(lPassiveModeHandle, pSendBuf, dwBufSize);
//Send data to the decoder, pSendBuf is the buffer that saves the data, and dwBufSize is the size of the data
NET_DVR_MatrixStopPassiveDecode(lPassiveModeHandle); //Stop passive decoding
//Logout
NET_DVR_Logout(lUserID);
// Release SDK resource
NET_DVR_Cleanup();
return;
}

15
Device Network SDK User Manual

4 API Description
4.1 SDK Initialization
4.1.1 Initialize SDK: NET_DVR_Init
API:
Parameters:
Return:
Remarks:

BOOL NET_DVR_Init()
None
Return TRUE on success, FALSE on failure.
This API is used to initialize SDK. Please call this API before calling any other API.
Return to index

4.1.2 Release SDK resource: NET_DVR_Cleanup
API:
Parameters:
Return:
Remarks:

BOOL NET_DVR_Cleanup()
None
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError to
get the error code.
This API is used to release SDK resource. Please calling it before closing the
program.
Return to index

4.2 Get Error Message
4.2.1 Get the error code of last operation: NET_DVR_GetLastError
API:
Parameters:
Return:
Remarks:

DWORD NET_DVR_GetLastError()
The error code of last operation.
Return the error code. Generally, there are 3 different types of error
information: error of network communication library, error of RTSP library, and
error of software/hardware decoding library, see detail to macro definition of
error code.
Return to index

16
Device Network SDK User Manual

4.2.2 Get the error message of last operation: NET_DVR_GetErrorMsg
API:
Parameters:
Return:
Remarks:

char* NET_DVR_GetErrorMsg(LONG
*pErrorNo)
[out] pErrorNo
The pointer of the error code number
The pointer that saves the error message. Please call NET_DVR_GetLastError to
get the error code.
Generally, there are 3 different types of error information: error of network
communication library, error of RTSP library, and error of software/hardware
decoding library, see detail to macro definition of error code.
Return to index

4.3 Login the Device
4.3.1 Loin the device: NET_DVR_Login_V30
API:
Parameters:

Return:

Remarks:

LONG NET_DVR_Login_V30(char *sDVRIP, WORD wDVRPort, char
*sUserName, char *sPassword,LPNET_DVR_DEVICEINFO_V30 lpDeviceInfo)
[in] Sdvrip
IP address of the device
[in] wDVRPort
Port number of the devic
[in] sUserName
User name
[in] sPassword
Password
[out] lpDeviceInfo
Device information
Return -1 if it is failed, and other value is the value of returned user ID. The
user ID is unique, and next operations should be realized through this ID.
Please call NET_DVR_GetLastError to get the error code.
Decoder supports 32 different user names and 128 users login at the same
time. SDK supports 512 * login. UserID is incremented one by one, from 0 to
511 and then return to 0. Logout and NET_DVR_Cleanup will not initialize the
UserID to 0.
Return to index

4.3.2 Logout: NET_DVR_Logout
API:
Parameters:
Return:
Remarks:

BOOL NET_DVR_Logout(LONG lUserID)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError to
get the error code.
It is suggested to call this API to logout.
Return to index

17
Device Network SDK User Manual

4.4 Get the capability set of the device
4.4.1 Get the capability set: NET_DVR_GetDeviceAbility
API:
Parameters:

BOOL NET_DVR_GetDeviceAbility(LONG lUserID, DWORD dwAbilityType,
char* pInBuf, DWORD dwInLength, char* pOutBuf, DWORD dwOutLength)
[in] lUserID
The return value of NET_DVR_Login_V30
[in] dwAbilityType
Capability type, details listed below
[in] pInBuf
Pointer of the input buffer (according to
description mode of ability parameter, defined
by device, it supports XML text or structure
format)
[in] dwInLength
Length of input buffer
[out] pOutBuf
Pointer of the output buffer (according to
description mode of ability set, defined by
device, it supports XML text or structure format)
[in] dwOutLength
Length of output buffer
dwAbilityType Macro Definition Value Implication
MATRIXDECODER_ABILITY

0x200

Display and decoding capability of
multi-channel decoder

MATRIXDECODER_ABILITY_V41

Return:
Remarks:

0x260

Decoder capability set (extended)

Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The definitions of pInBuf are different according to different devices, and the
input and output parameter format when getting different types of
capabilities are defined as below:

Macro Definition

Type of Ability

pInBuf pOutBuf

MATRIXDECODER_ABILITY

Get display and decoding

None

NET_DVR_MATRIX_ABILITY

None

NET_DVR_MATRIX_ABILITY_V41

capability of multi-channel
decoder
MATRIXDECODER_ABILITY_V41 Get decoder capability set
(extended)

Return to index

18
Device Network SDK User Manual

4.5 Configuration and Control of the Display Channel
4.5.1 Get the information of display channel:
NET_DVR_MatrixGetDisplayCfg_V41
API:
Parameters:

Return:

BOOL NET_DVR_MatrixGetDisplayCfg_V41 (LONG lUserID, LONG
dwDispChanNum, LPNET_DVR_MATRIX_VOUTCFG lpVoutCfg)
[in]lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDispChanNum
Display channel, please get it from capability set
[out] lpVoutCfg
Display channel information, please kindly refer
to the structure: NET_DVR_MATRIX_VOUTCFG
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.5.2 Configure the display channel:
NET_DVR_MatrixSetDisplayCfg_V41
API:
Parameters:

Return:

BOOL NET_DVR_MatrixSetDisplayCfg_V41(LONG lUserID, LONG
dwDispChanNum, LPNET_DVR_MATRIX_VOUTCFG lpVoutCfg)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDispChanNum
Display channel, please get it from capability set
[in] lpVoutCfg
Display channel configuration, please kindly
refer to the structure:
NET_DVR_MATRIX_VOUTCFG
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.5.3 Control the display channel: NET_DVR_MatrixDiaplayControl
API:
Parameters:

BOOL NET_DVR_MatrixDiaplayControl(LONG lUserID, DWORD
dwDispChanNum, DWORD dwDispChanCmd, DWORD dwCmdParam)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDispChanNum
Display channel, please get it from capability set
[in] dwDispChanCmd
Display channel control command, see to the
following list

19
Device Network SDK User Manual
[in] dwCmdParam

Return:

Command parameter, please set to 0

dwDispChanNum Macro Definition

Value

Implication

DISP_CMD_ENLARGE_WINDOW

Enlarge one window of
the display channel

DISP_CMD_RENEW_WINDOW

Resume the window of
the display channel

Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.6 Parameter Configuration
4.6.1 Get configuration of the device: NET_DVR_GetDVRConfig
API:

BOOL NET_DVR_GetDVRConfig(LONG lUserID, DWORD dwCommand,LONG
lChannel, LPVOID lpOutBuffer, DWORD dwOutBufferSize, LPDWORD
lpBytesReturned)
Paramete [in] lUserID
User ID, the return value of NET_DVR_Login_V30
rs:
[in] dwCommand
Configuration command, please kindly refer to
the following list
[in] lChannel
Channel number, if the channel parameter is not
required, lChannel is invalid, and set it as
0xFFFFFFFF
[out] lpOutBuffer
The buffer to save the received data
[in] dwOutBufferSize
The size of the buffer (unit: byte), it can't be 0
[out] lpBytesReturned
The size of the returned buffer, it can't be NULL
Return: Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError to
get the error code.
Remarks: The structures and command numbers are different according to the various
getting functions, and they are listed as below:
Macro Definition of dwCommand Description

lChannel

lpOutBuffer

NET_DVR_GET_NETCFG_OTHER

invalid

NET_DVR_NETCFG_OTHER 244

valid

NET_DVR_BIGSCREENCFG

Get network

Value

configuration of
multi-channel decoder
NET_DVR_MATRIX_BIGSCREENCFG Get screen stitching
_GET

1140

parameter(supported
by 64-T HD decoder)

Return to index

20
Device Network SDK User Manual

4.6.2 Set the parameters of the device: NET_DVR_SetDVRConfig
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_SetDVRConfig(LONG lUserID, DWORD dwCommand,LONG
lChannel, LPVOID lpInBuffer, DWORD dwInBufferSize)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwCommand
Parameter type. Please kindly refer to the
following list
[in] lChannel
Channel number, if it is not the channel
parameter, do not use lChannel, and set it as
0xFFFFFFFF
[in] lpInBuffer
Buffer that saves the output parameters
[in] dwInBufferSize
The buffer size (unit: byte)
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The structures and command numbers are different according to the various
setting functions, and they are listed as below:

Macro Definition of dwCommand Description

lChannel

lpInBuffer

NET_DVR_SET_NETCFG_OTHER

invalid

NET_DVR_NETCFG_OTHER 245

valid

NET_DVR_BIGSCREENCFG

Se network parameter

Value

channel decoder
NET_DVR_MATRIX_BIGSCREENCFG Set screen stitching
_SET

1141

parameter(supported
by 64-T HD decoder)

Return to index

4.7 Function about Decoding Channel
4.7.1 Get the configuration of decoding channel:
NET_DVR_MatrixGetDecChanCfg
API:
Parameters:

Return:

BOOL NET_DVR_MatrixGetDecChanCfg(LONG lUserID, DWORD dwDecChan,
LPNET_DVR_MATRIX_DECCHAN_CONTROL lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChan
Decoding channel number
[out] lpInter
Decode channel zoom control, please kindly
refer to the structure:
NET_DVR_MATRIX_DECCHAN_CONTROL
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

21
Device Network SDK User Manual

4.7.2 Configure the decoding channel: NET_DVR_MatrixSetDecChanCfg
API:
Parameters:

Return:

BOOL NET_DVR_MatrixSetDecChanCfg(LONG lUserID, DWORD dwDecChan,
LPNET_DVR_MATRIX_DECCHAN_CONTROL lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChan
Decoding channel number
[in] lpInter
Decode channel zoom control, please kindly
refer to the structure:
NET_DVR_MATRIX_DECCHAN_CONTROL
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.7.3 Get the video format of the decoding channel:
NET_DVR_MatrixGetVideoStandard
API:
Parameters:

Return:

BOOL NET_DVR_MatrixGetVideoStandard(LONG lUserID,LONG
dwDecChanNum, LPDWORD lpdwVideoStandard)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpdwVideoStandard
Decode video format: 0- PAL, 1- NTSC
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.7.4 Set the video format of the decoding channel:
NET_DVR_MatrixSetVideoStandard
API:
Parameters:

Return:

BOOL NET_DVR_MatrixSetVideoStandard(LONG lUserID,DWORD
dwDecChanNum, DWORD dwVideoStandard)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] dwVideoStandard
Decode video format: 0- PAL, 1- NTSC
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

22
Device Network SDK User Manual

4.7.5 Get the status of current decoding channel:
NET_DVR_MatrixGetDecChanStatus
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetDecChanStatus(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_DEC_CHAN_STATUS lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpInter
Status of the decoding channel, please kindly
refer to the structure:
NET_DVR_MATRIX_DEC_CHAN_STATUS
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
It is used to get the status of the decoding channel, including decoding status,
stream transmission rate
Return to index

4.7.6 Get the switch of the decoding channel:
NET_DVR_MatrixGetDecChanEnable
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetDecChanEnable(LONG lUserID, DWORD
dwDecChanNum, LPDWORD lpdwEnable)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpdwEnable
0- close, 1- open
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The switch of decoding channel, is used to control the decoding process of the
decoding channel. When set the switch to close, whether current decoding
channel is during dynamic decoding or loop decoding, it will stop decoding.
The display window will turn to black screen after it is effected. If set the
switch on, it will resume the last process.
Notes: This function can be used with the switch of loop decoding to control
loop decoding.
Return to index

4.7.7 Set the switch of the decoding channel:
NET_DVR_MatrixSetDecChanEnable
API:

BOOL NET_DVR_MatrixSetDecChanEnable (LONG lUserID, DWORD

23
Device Network SDK User Manual

Parameters:

Return:
Remarks:

dwDecChanNum, DWORD dwEnable)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] dwEnable
0- close, 1- open
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The switch of decoding channel, is used to control the decoding process of the
decoding channel. When set the switch to close, whether current decoding
channel is during dynamic decoding or loop decoding, it will stop decoding.
The display window will turn to black screen after it is effected. If set the
switch on, it will resume the last process.
Notes: This function can be used with the switch of loop decoding to control
loop decoding.
Return to index

4.8 Active Decoding
4.8.1 Start dynamic decoding: NET_DVR_MatrixStartDynamic_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixStartDynamic_V30( LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_PU_STREAM_CFG lpDynamicInfo)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] lpDynamicInfo
Dynamic decoding parameter, please kindly
refer to the structure:
NET_DVR_PU_STREAM_CFG
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
It is used to connect one decoding channel of the multi-channel decoder to
one channel of front-end device, and continue to decode until call the stop API
or set decoding switch off. If decoding interruption is caused by network
interrupted during the decoding process, the multi-channel decoder will
automatically re-connect to the front device, till the connection is successful or
the stop API is called. During re-connecting, the decoding channel is in the
black state.
Return to index

4.8.2 Stop dynamic decoding: NET_DVR_MatrixStopDynamic
API:
Parameters:

BOOL NET_DVR_MatrixStopDynamic(LONG lUserID, DWORD dwDecChanNum)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number

24
Device Network SDK User Manual
Return:

Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.8.3 Get the information of circle decoding channel:
NET_DVR_MatrixGetLoopDecChanInfo_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetLoopDecChanInfo_V30(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_LOOP_DECINFO_V30 lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in]dwDecChanNum
Decoding channel number
[out] lpInter
The info of circle decoding channel, please kindly
refer to the structure:
NET_DVR_MATRIX_LOOP_DECINFO_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
It is used to set circle decoding parameter of one decode channel in
multi-channel decoder, and every decoding channel can connect to 16
front-end channels for circle decoding. The cycle period supports to be set.
After set successfully, if the starting flag of connection information is enabled,
the channel go into circle status and start circle decoding; If disabled, then not
start loop decoding. We can use with the switch API of circle decoding to
achieve the circle decoding control, details refer to the part of the circle
decoding switch (NET_DVR_MatrixGetLoopDecChanEnable and
NET_DVR_MatrixSetLoopDecChanEnable).
Return to index

4.8.4 Set the circle decoding channel:
NET_DVR_MatrixSetLoopDecChanInfo_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixSetLoopDecChanInfo_V30(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_LOOP_DECINFO_V30 lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] lpInter
The configuration of the circle decoding channel,
please kindly refer to the structure:
NET_DVR_MATRIX_LOOP_DECINFO_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
It is used to set circle decoding parameter of one decode channel in

25
Device Network SDK User Manual
multi-channel decoder, and every decoding channel can connect to 16
front-end channels for circle decoding. The cycle period supports to be set.
After set successfully, if the starting flag of connection information is enabled,
the channel go into circle status and start circle decoding; If disabled, then not
start loop decoding. We can use with the switch API of circle decoding to
achieve the circle decoding control, details refer to the part of the circle
decoding switch (NET_DVR_MatrixGetLoopDecChanEnable and
NET_DVR_MatrixSetLoopDecChanEnable).
Return to index

4.8.5 Get the circle switch of the decoding channel:
NET_DVR_MatrixGetLoopDecChanEnable
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetLoopDecChanEnable(LONG lUserID, DWORD
dwDecChanNum, LPDWORD lpdwEnable)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpdwEnable
0- close, 1- open
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The circle switch is used to control the starting and stopping of circle decoing,
not to control the starting and stopping of decoding. When set the circle
switch off, the decoding channel will stop the circle decoding and continue to
decode the stream of the currently connected channel, that is, turn to
dynamic decoding. When set the switch on, it will resume to circle decoding.
Return to index

4.8.6 Set the circle switch of the decoding channel:
NET_DVR_MatrixSetLoopDecChanEnable
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixSetLoopDecChanEnable(LONG lUserID, DWORD
dwDecChanNum, DWORD dwEnable)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] dwEnable
0- close, 1- open
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The circle switch is used to control the starting and stopping of circle decoing,
not to control the starting and stopping of decoding. When set the circle
switch off, the decoding channel will stop the circle decoding and continue to
decode the stream of the currently connected channel, that is, turn to

26
Device Network SDK User Manual
dynamic decoding. When set the switch on, it will resume to circle decoding.
Return to index

4.8.7 Set the circle switch of all decoding channels:
NET_DVR_MatrixGetLoopDecEnable
API:
Parameters:
Return:
Remarks:

BOOL NET_DVR_MatrixGetLoopDecEnable(LONG lUserID, LPDWORD
lpdwEnable)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[out] lpdwEnable
indicated by bit: 0- close, 1- open
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
lpdwEnable is indicated by bit, for example, if lpdwEnable&0x1=1 and
lpdwEnable&0x4=1, other bits are 0, it means the circle switch of no.1 and
no.3 decoding channel are turned on, and that of the other channels are off.
Return to index

4.8.8 Get the information of current decoding channel:
NET_DVR_MatrixGetDecChanInfo_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetDecChanInfo_V30(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_DEC_CHAN_INFO_V30 lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpInter
Decoding channel information, please kindly
refer to the structure:
NET_DVR_MATRIX_DEC_CHAN_INFO_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
It is used to get the information of current decoding channel, including the
information of front-end device, stream mode, and so on.
Return to index

4.8.9 Configure the playback of remote files:
NET_DVR_MatrixSetRemotePlay
API:
Parameters:

BOOL NET_DVR_MatrixSetRemotePlay(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_DEC_REMOTE_PLAY lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30

27
Device Network SDK User Manual
[in] dwDecChanNum
[in] lpInter

Decoding channel number
Playback parameters, please kindly refer to the
structure:
NET_DVR_MATRIX_DEC_REMOTE_PLAY
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
After calling this API to configure the parameters, please call
NET_DVR_MatrixSetRemotePlayControl (NET_DVR_PLAYSTART) to start play.
Return to index

Return:
Remarks:

4.8.10 Control the playback of remote files:
NET_DVR_MatrixSetRemotePlayControl
API:

Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixSetRemotePlayControl(LONG lUserID, DWORD
dwDecChanNum, DWORD dwControlCode, DWORD dwInValue, DWORD
*lpOutValue)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] dwControlCode
Control commands, see to the following list
[in] dwInValue
The input value, related to the command
[in] lpOutValue
The output parameter, related to the command
dwControlCode Macro Definition

Value

Implication

NET_DVR_PLAYSTART

Start playing

NET_DVR_PLAYSTOP

Stop playing

NET_DVR_PLAYPAUSE

Pause

NET_DVR_PLAYRESTART

Resume

NET_DVR_PLAYFAST

Fast

NET_DVR_PLAYSLOW

Slow

NET_DVR_PLAYNORMAL

Normal speed

NET_DVR_PLAYSTARTAUDIO

Open sound

NET_DVR_PLAYSTOPAUDIO

Close sound

NET_DVR_PLAYSETPOS

Change progress of playback by file

Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
dwInValue and lpOutValue are related to the control command. For some
commands, such as NET_DVR_PLAYSTART, it does not require to set both the
two parameters; For some commands, such as NET_DVR_PLAYSETPOS, it
requires to set the value of dwInValue. The playback by time does not support
the control command NET_DVR_PLAYSETPOS
Return to index

28
Device Network SDK User Manual

4.8.11 Get the status of playback:
NET_DVR_MatrixGetRemotePlayStatus
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetRemotePlayStatus(LONG lUserID, DWORD
dwDecChanNum,LPNET_DVR_MATRIX_DEC_REMOTE_PLAY_STATUS lpOuter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[out] lpOuter
Playback status, please kindly refer to the
structure:
NET_DVR_MATRIX_DEC_REMOTE_PLAY_STATUS
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
The decoder connects to the front-end device and playback the files by file
name or by time. This API is used to get the status of the playback. There is
certain delay for the command is transferred by the client, so we cannot call
NET_DVR_MatrixSetRemotePlayControl frequently. If we get the status of
playback and handle the playback according to the status, we should consider
the network delay.
Return to index

4.9 Passive Decoding
4.9.1 Start passive decoding: NET_DVR_MatrixStartPassiveDecode
API:
Parameters:

Return:

LONG NET_DVR_MatrixStartPassiveDecode(LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_MATRIX_PASSIVEMODE lpPassiveMode)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] lpPassiveMode
Passive decoding parameter, please kindly refer
to the structure:
NET_DVR_MATRIX_PASSIVEMODE
-1 means false, and other values could be used as the parameters of other
interfaces, such as NET_DVR_MatrixSendData. Please call
NET_DVR_GetLastError to get the error code.

Remarks:
Return to index

29
Device Network SDK User Manual

4.9.2 Send data to the passive decoding channel:
NET_DVR_MatrixSendData
API:
Parameters:

Return:

BOOL NET_DVR_MatrixSendData(LONG lPassiveHandle, char *pSendBuf,
DWORD dwBufSize)
[in] lPassiveHandle
The return value of
NET_DVR_MatrixStartPassiveDecode
[in] pSendBuf
The buffer that saves the data to be sent
[in] dwBufSize
Size of the buffer, should be less than 30K bytes
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.9.3 Stop the passive decoding: NET_DVR_MatrixStopPassiveDecode
API:
Parameters:
Return:

BOOL NET_DVR_MatrixStopPassiveDecode(LONG lPassiveHandle)
[in] lPassiveHandle
The return value of
NET_DVR_MatrixStartPassiveDecode
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.9.4 Get status of the passive decoding:
NET_DVR_MatrixGetPassiveDecodeStatus
API:
Parameters:
Return:

LONG NET_DVR_MatrixGetPassiveDecodeStatus(LONG lPassiveHandle)
[in] lPassiveHandle
The return value of
NET_DVR_MatrixStartPassiveDecode
-1- failed, 1- send the data successfully, 2- sending is suspended, 3- sending is
resumed, 4- error, 5- heartbeat messages. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

30
Device Network SDK User Manual

4.9.5 Control of the passive decoding:
NET_DVR_MatrixPassiveDecodeControl
API:
Parameters:

Return:

BOOL NET_DVR_MatrixPassiveDecodeControl( LONG lUserID, DWORD
dwDecChanNum, LPNET_DVR_PASSIVEDECODE_CONTROL lpInter)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
Decoding channel number
[in] lpInter
The control parameters, please kindly refer to
the structure:
NET_DVR_PASSIVEDECODE_CONTROL
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.10 Upload the LOGO and Control Its Display
4.10.1 Upload the LOGO: NET_DVR_UploadLogo
API:
Parameters:

Return:

BOOL NET_DVR_UploadLogo(LONG lUserID,DWORD dwDecChanNum,
LPNET_DVR_DISP_LOGOCFG lpDispLogoCfg, char *sLogoBuffer)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChanNum
The number of decoding channel
[in] lpDispLogoCfg
The LOGO parameters, please kindly refer to the
structure: NET_DVR_DISP_LOGOCFG
[in] sLogoBuffer
LOGO data buffer, at most 100k, width and
height must be multiples of 32
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.10.2 Display control of the LOGO: NET_DVR_LogoSwitch
API:
Parameters:

BOOL NET_DVR_LogoSwitch(LONG lUserID, DWORD dwDecChan, DWORD
dwLogoSwitch)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] dwDecChan
The number of decoding channel
[in] dwLogoSwitch
Switch command, please kindly see to the
following list

31
Device Network SDK User Manual

Return:

Macro Definition

Value

Implication

NET_DVR_SHOWLOGO

Display LOGO

NET_DVR_HIDELOGO

Hide LOGO

Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

4.11 Transparent Channel
4.11.1 Get the information of transparent channel:
NET_DVR_MatrixGetTranInfo_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixGetTranInfo_V30(LONG lUserID,
LPNET_DVR_MATRIX_TRAN_CHAN_CONFIG_V30 lpTranInfo)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[out] lpTranInfo
The parameter of transparent channel, please
kindly refer to the structure:
NET_DVR_MATRIX_TRAN_CHAN_CONFIG_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
Here transparent channel configuration is to build network transparent
channel between the decoder and the front-end device, not between client
and the decoder. Because most multi-channel decoders don't support building
232/485 transparent channel between with the PC client, local serial port can
only be the access port of the serial console (via RS 232) or device like control
keyboard (via RS232/RS485).
Return to index

4.11.2 Set the transparent channel: NET_DVR_MatrixSetTranInfo_V30
API:
Parameters:

Return:
Remarks:

BOOL NET_DVR_MatrixSetTranInfo_V30(LONG lUserID,
LPNET_DVR_MATRIX_TRAN_CHAN_CONFIG_V30
lpTranInfo)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[in] lpTranInfo
The parameter of transparent channel, please
kindly refer to the structure:
NET_DVR_MATRIX_TRAN_CHAN_CONFIG_V30
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.
Currently, one multi-channel decoder supports 64 transparent channels at

32
Device Network SDK User Manual
most, including 232 and 485 transparent channels. It supports only one 232
full-duplex transparent channel and one 485 full-duplex transparent channel,
and it supports not to set full-duple transparent channel.
Return to index

4.12 Device Status
4.12.1 Get the status of the device:
NET_DVR_MatrixGetDeviceStatus_V41
API:
Parameters:

Return:

BOOL NET_DVR_MatrixGetDeviceStatus_V41(LONG lUserID,
LPNET_DVR_DECODER_WORK_STATUS_V41 lpDecoderCfg)
[in] lUserID
User ID, the return value of NET_DVR_Login_V30
[out] lpDecoderCfg
The status of the decoder, please kindly refer to
the structure:
NET_DVR_DECODER_WORK_STATUS_V41
Return TRUE on success, FALSE on failure. Please call NET_DVR_GetLastError
to get the error code.

Remarks:
Return to index

33
Device Network SDK User Manual

5 Macro Definition of Error Code
5.1 Error code of network communication library
Error

Value

Message

NET_DVR_NOERROR

No error.

NET_DVR_PASSWORD_ERROR

User name or password error.

NET_DVR_NOENOUGHPRI

Not authorized to do this operation.

NET_DVR_NOINIT

SDK is not initialized.

NET_DVR_CHANNEL_ERROR

Channel number error. There is no corresponding channel
number on the device.

NET_DVR_OVER_MAXLINK

The number of clients connected to the device has
exceeded the max limit.

NET_DVR_VERSIONNOMATCH

Version mismatch. SDK version is not matching with the
device.

NET_DVR_NETWORK_FAIL_CONNECT

Failed to connect to the device. The device is off-line, or
connection timeout caused by network.

NET_DVR_NETWORK_SEND_ERROR

Failed to send data to the device.

NET_DVR_NETWORK_RECV_ERROR

Failed to receive data from the device.

NET_DVR_NETWORK_RECV_TIMEOUT

Timeout when receiving the data from the device.

NET_DVR_NETWORK_ERRORDATA

The data sent to the device is illegal, or the data received
from the device error. E.g. The input data is not
supported by the device for remote configuration.

NET_DVR_ORDER_ERROR

API calling order error.

NET_DVR_OPERNOPERMIT

Not authorized for this operation.

NET_DVR_COMMANDTIMEOUT

Executing command on the device is timeout.

NET_DVR_ERRORSERIALPORT

Serial port number error. The assigned serial port does
not exist on the device.

NET_DVR_ERRORALARMPORT

Alarm port number error.

NET_DVR_PARAMETER_ERROR

Parameter error. Input or output parameter in the SDK
API is NULL.

NET_DVR_CHAN_EXCEPTION

Device channel is in exception status.

NET_DVR_NODISK

No hard disk on the device, and the operation of
recording and hard disk configuration will fail.

NET_DVR_ERRORDISKNUM

Hard disk number error. The assigned hard disk number
does not exist during hard disk management.

NET_DVR_DISK_FULL

Device hark disk is full.

NET_DVR_DISK_ERROR

Device hard disk error.

NET_DVR_NOSUPPORT

Device does not support this function.

NET_DVR_BUSY

Device is busy.

NET_DVR_MODIFY_FAIL

Failed to modify device parameters.

34
Device Network SDK User Manual
NET_DVR_PASSWORD_FORMAT_ERROR

The inputting password format is not correct.

NET_DVR_DISK_FORMATING

Hard disk is formatting, and the operation cannot be
done.

NET_DVR_DVRNORESOURCE

Not enough resource on the device.

NET_DVR_DVROPRATEFAILED

Device operation failed.

NET_DVR_OPENHOSTSOUND_FAIL

Failed to collect local audio data or to open audio output
during voice talk / broadcasting.

NET_DVR_DVRVOICEOPENED

Voice talk channel on the device has been occupied.

NET_DVR_TIMEINPUTERROR

Time input is not correct.

NET_DVR_NOSPECFILE

There is no selected file for playback.

NET_DVR_CREATEFILE_ERROR

Failed to create a file, during local recording, saving
picture, getting configuration file or downloading record
file.

NET_DVR_FILEOPENFAIL

Failed to open a file, when importing configuration file,
upgrading device or uploading inquest file.

NET_DVR_OPERNOTFINISH

The last operation has not been completed.

NET_DVR_GETPLAYTIMEFAIL

Failed to get the current played time.

NET_DVR_PLAYFAIL

Failed to start playback.

NET_DVR_FILEFORMAT_ERROR

The file format is not correct.

NET_DVR_DIR_ERROR

File directory error.

NET_DVR_ALLOC_RESOURCE_ERROR

Resource allocation error.

NET_DVR_AUDIO_MODE_ERROR

Sound adapter mode error. Currently opened sound
playing mode does not match with the set mode.

NET_DVR_NOENOUGH_BUF

Buffer is not enough.

NET_DVR_CREATESOCKET_ERROR

Create SOCKET error.

NET_DVR_SETSOCKET_ERROR

Set SOCKET error.

NET_DVR_MAX_NUM

The number of login or preview connections has
exceeded the SDK limitation.

NET_DVR_USERNOTEXIST

NET_DVR_WRITEFLASHERROR

User doest not exist. The user ID has been logged out or
unavailable.
Writing FLASH error. Failed to write FLASH during device
upgrade.

NET_DVR_UPGRADEFAIL

Failed to upgrade device. It is caused by network problem
or the language mismatch between the device and the
upgrade file.

NET_DVR_CARDHAVEINIT

The decode card has already been initialed.

NET_DVR_PLAYERFAILED

Failed to call API of player SDK.

NET_DVR_MAX_USERNUM

The number of login user has reached the maximum limit.

NET_DVR_GETLOCALIPANDMACFAIL

Failed to get the IP address or physical address of local PC.

NET_DVR_NOENCODEING

This channel hasn't started encoding.

NET_DVR_IPMISMATCH

IP address not match.

NET_DVR_MACMISMATCH

MAC address not match.

NET_DVR_UPGRADELANGMISMATCH

The language of upgrading file does not match the
language of the device.

35
Device Network SDK User Manual
NET_DVR_MAX_PLAYERPORT

The number of player ports has reached the maximum
limit.

NET_DVR_NOSPACEBACKUP

No enough space to backup file in backup device.

NET_DVR_NODEVICEBACKUP

No backup device.

NET_DVR_PICTURE_BITS_ERROR

The color quality setting of the picture does not match
the requirement, and it should be limited to 24.

NET_DVR_PICTURE_DIMENSION_ERROR

The dimension is over 128x256.

NET_DVR_PICTURE_SIZ_ERROR

The size of picture is over 100K.

NET_DVR_LOADPLAYERSDKFAILED

Failed to load the player SDK.

NET_DVR_LOADPLAYERSDKPROC_ERROR

Can not find the function in player SDK.

NET_DVR_LOADDSSDKFAILED

Failed to load the library file-"DsSdk".

NET_DVR_LOADDSSDKPROC_ERROR

Can not find the API in "DsSdk".

NET_DVR_DSSDK_ERROR

Failed to call the API in "DsSdk".

NET_DVR_VOICEMONOPOLIZE

Sound adapter has been monopolized.

NET_DVR_JOINMULTICASTFAILED

Failed to join to multicast group.

NET_DVR_CREATEDIR_ERROR

Failed to create log file directory.

NET_DVR_BINDSOCKET_ERROR

Failed to bind socket.

NET_DVR_SOCKETCLOSE_ERROR

Socket disconnected. It is caused by network
disconnection or destination unreachable.

NET_DVR_USERID_ISUSING

The user ID is operating when logout.

NET_DVR_SOCKETLISTEN_ERROR

Failed to listen.

NET_DVR_PROGRAM_EXCEPTION

SDK program exception.

NET_DVR_WRITEFILE_FAILED

Failed to write file, during local recording, saving picture
or downloading record file.

NET_DVR_FORMAT_READONLY

Failed to format read-only HD.

NET_DVR_WITHSAMEUSERNAME

This user name already exists in the user configuration
structure.

NET_DVR_DEVICETYPE_ERROR

Device type does not match when import configuration.

NET_DVR_LANGUAGE_ERROR

Language does not match when import configuration.

NET_DVR_PARAVERSION_ERROR

Software version does not match when import
configuration.

NET_DVR_IPCHAN_NOTALIVE

IP channel is not on-line when previewing.

NET_DVR_RTSP_SDK_ERROR

Load StreamTransClient.dll failed.

NET_DVR_CONVERT_SDK_ERROR

Load SystemTransform.dll failed.

NET_DVR_IPC_COUNT_OVERFLOW

Exceeds maximum number of connected IP channels.

NET_DVR_MAX_ADD_NUM

Exceeds maximum number of supported record labels or
other operations.

NET_DVR_PARAMMODE_ERROR

Image intensifier, parameter mode error. This error may
occur when client sets software or hardware parameters.

NET_DVR_CODESPITTER_OFFLINE

Code splitter is offline.

NET_DVR_BACKUP_COPYING

Device is backing up.

NET_DVR_CHAN_NOTSUPPORT

Channel not support.

NET_DVR_CALLINEINVALID

The height line location is too concentrated, or the length
line is not inclined enough.

36
Device Network SDK User Manual
NET_DVR_CALCANCELCONFLICT

Cancel calibration conflict, if the rule and overall actual
size filter have been set.

NET_DVR_CALPOINTOUTRANGE

Calibration point exceeds the range.

NET_DVR_FILTERRECTINVALID

The size filter does not meet the requirement.

NET_DVR_DDNS_DEVOFFLINE

Device has not registered to DDNS.

NET_DVR_DDNS_INTER_ERROR

DDNS inner error.

NET_DVR_ALIAS_DUPLICATE

150

Alias is duplicate (for EasyDDNS)

NET_DVR_DEV_NET_OVERFLOW

800

Network traffic is over device ability limit.

NET_DVR_STATUS_RECORDFILE_WRITING

801

The video file is recording and can't be locked.

802

The hard disk capacity is too small and can not be

_NOT_LOCK
NET_DVR_STATUS_CANT_FORMAT_LITTLE
_DISK

formatted.

Error code of RAID
NET_DVR_NAME_NOT_ONLY

200

This user name already exists.

NET_DVR_OVER_MAX_ARRAY

201

The array exceeds the limitation.

NET_DVR_OVER_MAX_VD

202

The virtual disk exceeds the limitation.

NET_DVR_VD_SLOT_EXCEED

203

The virtual disk slots are full.

NET_DVR_PD_STATUS_INVALID

204

Physical disk used to rebuild RAID is in error state.

NET_DVR_PD_BE_DEDICATE_SPARE

205

Physical disk used to rebuild RAID is assigned as spare
disk.

NET_DVR_PD_NOT_FREE

206

Physical disk used to rebuild RAID is not free.

NET_DVR_CANNOT_MIG2NEWMODE

207

Can not migrate from current RAID type to the new type.

NET_DVR_MIG_PAUSE

208

Migration has been paused.

NET_DVR_MIG_ABOUTED

209

Migration has been aborted.

NET_DVR_EXIST_VD

210

There is virtual disk in the array, and the array can not
been deleted.

NET_DVR_TARGET_IN_LD_FUNCTIONAL

211

Target physical disk is part of the virtual disk and is
functional.

NET_DVR_HD_IS_ASSIGNED_ALREADY

212

Specified physical disk is assigned as a virtual disk.

NET_DVR_INVALID_HD_COUNT

213

Number of physical disks doesn't fit the specified RAID
level.

NET_DVR_LD_IS_FUNCTIONAL

214

Specified virtual disk is functional and it can not be
rebuilt.

NET_DVR_BGA_RUNNING

215

BGA is running.

NET_DVR_LD_NO_ATAPI

216

Can not create virtual disk with ATAPI drive.

NET_DVR_MIGRATION_NOT_NEED

217

Migration is not necessary.

NET_DVR_HD_TYPE_MISMATCH

218

Physical disks are not of the same type.

NET_DVR_NO_LD_IN_DG

219

No virtual disk exists on the specified array.

NET_DVR_NO_ROOM_FOR_SPARE

220

Disk space is too small to be assigned as spare drive.

NET_DVR_SPARE_IS_IN_MULTI_DG

221

Disk is already assigned as a spare drive for an array.

NET_DVR_DG_HAS_MISSING_PD

222

Disk is missing from an array.

37
Device Network SDK User Manual
Error code of intelligent device
NET_DVR_ID_ERROR

300

Configuration ID is illegal.

NET_DVR_POLYGON_ERROR

301

Polygon does not match requirement.

NET_DVR_RULE_PARAM_ERROR

302

Rule parameter is illegal.

NET_DVR_RULE_CFG_CONFLICT

303

Configuration conflict.

NET_DVR_CALIBRATE_NOT_READY

304

Calibration not ready.

NET_DVR_CAMERA_DATA_ERROR

305

Camera parameter is illegal.

NET_DVR_CALIBRATE_DATA_UNFIT

306

Not inclined enough, not fit to calibrate.

NET_DVR_CALIBRATE_DATA_CONFILICT

307

Calibration error.

NET_DVR_CALIBRATE_CALC_FAIL

308

Failed to calculate camera calibration parameter.

NET_DVR_CALIBRATE_LINE_OUT_RECT

309

The input calibrating line exceeds the external rectangle
sample.

NET_DVR_ENTER_RULE_NOT_READY

310

Enter rule not ready.

NET_DVR_AID_RULE_NO_INCLUDE_LANE

311

It does not include lane in the traffic event rule (especial
for traffic jam or driving against the traffic).

NET_DVR_LANE_NOT_READY

312

Lane not ready.

NET_DVR_RULE_INCLUDE_TWO_WAY

313

There are two different directions in event rule.

NET_DVR_LANE_TPS_RULE_CONFLICT

314

The lane conflicts with the data rule.

NET_DVR_NOT_SUPPORT_EVENT_TYPE

315

The event type is not supported by the device.

NET_DVR_LANE_NO_WAY

316

The lane has no direction.

NET_DVR_SIZE_FILTER_ERROR

317

The size of filter is illegal.

NET_DVR_LIB_FFL_NO_FACE

318

There is no face when feature point positioning.

NET_DVR_LIB_FFL_IMG_TOO_SMALL

319

The input image is too small when feature point
positioning.

NET_DVR_LIB_FD_IMG_NO_FACE

320

The input image has no face when detecting face in single
image.

NET_DVR_LIB_FACE_TOO_SMALL

321

Face is too small when building model.

NET_DVR_LIB_FACE_QUALITY_TOO_BAD

322

Face image is of poor quality when building model.

NET_DVR_KEY_PARAM_ERR

323

Advanced parameter setting error.

NET_DVR_CALIBRATE_DATA_ERR

324

Calibration sample size error, or data value error, or
sample points beyond the horizon

NET_DVR_CALIBRATE_DISABLE_FAIL

325

The configured rules do not allow to cancel calibration.

5.2 Error code of RTSP communication library
Error

Value

Message

NET_DVR_RTSP_GETPORTFAILED

407

RTSP port getting error.

NET_DVR_RTSP_DESCRIBESENDTIMEOUT

411

Sending "RTSP DECRIBE" is timeout.

NET_DVR_RTSP_DESCRIBESENDERROR

412

Failed to send "RTSP DECRIBE".

NET_DVR_RTSP_DESCRIBERECVTIMEOUT

413

Receiving "RTSP DECRIBE" is timeout.

NET_DVR_RTSP_DESCRIBERECVDATALOST

414

Receiving data of "RTSP DECRIBE" error.

NET_DVR_RTSP_DESCRIBERECVERROR

415

Failed to receive "RTSP DECRIBE".

38
Device Network SDK User Manual
NET_DVR_RTSP_DESCRIBESERVERERR

416

"RTSP DECRIBE" device returns the error that values
401 or 501.

NET_DVR_RTSP_SETUPSENDTIMEOUT

421

Sending "RTSP SETUP" is timeout.

NET_DVR_RTSP_SETUPSENDERROR

422

Sending "RTSP SETUP" error.

NET_DVR_RTSP_SETUPRECVTIMEOUT

423

Receiving "RTSP SETUP" is timeout.

NET_DVR_RTSP_SETUPRECVDATALOST

424

Receiving data of "RTSP SETUP" error.

NET_DVR_RTSP_SETUPRECVERROR

425

Failed to receive "RTSP SETUP".

NET_DVR_RTSP_OVER_MAX_CHAN

426

"RTSP SETUP" device returns the error that values
401 or 501. It exceeds the max connection number.

NET_DVR_RTSP_PLAYSENDTIMEOUT

431

Sending "RTSP PLAY" is timeout.

NET_DVR_RTSP_PLAYSENDERROR

432

Sending "RTSP PLAY" error.

NET_DVR_RTSP_PLAYRECVTIMEOUT

433

Receiving "RTSP PLAY" is timeout.

NET_DVR_RTSP_PLAYRECVDATALOST

434

Receiving data of "RTSP PLAY" error.

NET_DVR_RTSP_PLAYRECVERROR

435

Failed to receive "RTSP PLAY".

NET_DVR_RTSP_PLAYSERVERERR

436

"RTSP PLAY" device returns the error that values 401
or 501.

NET_DVR_RTSP_TEARDOWNSENDTIMEOUT

441

Sending "RTSP TEARDOWN" is timeout.

NET_DVR_RTSP_TEARDOWNSENDERROR

442

Sending "RTSP TEARDOWN" error.

NET_DVR_RTSP_TEARDOWNRECVTIMEOUT

443

Receiving "RTSP TEARDOWN" is timeout.

NET_DVR_RTSP_TEARDOWNRECVDATALOST

444

Receiving data of "RTSP TEARDOWN" error.

NET_DVR_RTSP_TEARDOWNRECVERROR

445

Failed to receive "RTSP TEARDOWN".

NET_DVR_RTSP_TEARDOWNSERVERERR

446

"RTSP TEARDOWN" device returns the error that
values 401 or 501.

5.3 Error code of software decoding library
Error

Value

Message

NET_PLAYM4_NOERROR

500

No error.

NET_PLAYM4_PARA_OVER

501

Input parameter is invalid.

NET_PLAYM4_ORDER_ERROR

502

API calling order error.

NET_PLAYM4_TIMER_ERROR

503

Failed to create multimedia clock.

NET_PLAYM4_DEC_VIDEO_ERROR

504

Failed to decode video data.

NET_PLAYM4_DEC_AUDIO_ERROR

505

Failed to decode audio data.

NET_PLAYM4_ALLOC_MEMORY_ERROR

506

Failed to allocate memory.

NET_PLAYM4_OPEN_FILE_ERROR

507

Failed to open the file.

NET_PLAYM4_CREATE_OBJ_ERROR

508

Failed to create thread event.

NET_PLAYM4_CREATE_DDRAW_ERROR

509

Failed to create DirectDraw object.

NET_PLAYM4_CREATE_OFFSCREEN_ERROR

510

Failed to create backstage cache for OFFSCREEN

39
Device Network SDK User Manual
mode.
NET_PLAYM4_BUF_OVER

511

Buffer overflow, failed to input stream.

NET_PLAYM4_CREATE_SOUND_ERROR

512

Failed to create audio equipment.

NET_PLAYM4_SET_VOLUME_ERROR

513

Failed to set the volume.

NET_PLAYM4_SUPPORT_FILE_ONLY

514

This API can be called only for file playback mode.

NET_PLAYM4_SUPPORT_STREAM_ONLY

515

This API can be called only when playing stream.

NET_PLAYM4_SYS_NOT_SUPPORT

516

Not support by the system. Decoder can only work
on the system above Pentium 3.

NET_PLAYM4_FILEHEADER_UNKNOWN

517

There is no file header.

NET_PLAYM4_VERSION_INCORRECT

518

The version mismatch between decoder and
encoder.

NET_PLAYM4_INIT_DECODER_ERROR

519

Failed to initialize the decoder.

NET_PLAYM4_CHECK_FILE_ERROR

520

The file is too short, or the stream data is unknown.

NET_PLAYM4_INIT_TIMER_ERROR

521

Failed to initialize multimedia clock.

NET_PLAYM4_BLT_ERROR

522

BLT failure.

NET_PLAYM4_UPDATE_ERROR

523

Failed to update overlay surface

NET_PLAYM4_OPEN_FILE_ERROR_MULTI

524

Failed to open video & audio stream file.

NET_PLAYM4_OPEN_FILE_ERROR_VIDEO

525

Failed to open video stream file.

NET_PLAYM4_JPEG_COMPRESS_ERROR

526

JPEG compression error.

NET_PLAYM4_EXTRACT_NOT_SUPPORT

527

Don't support the version of this file.

NET_PLAYM4_EXTRACT_DATA_ERROR

528

Extract video data failed.

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 43
Language                        : zh-CN
Tagged PDF                      : Yes
Producer                        : Microsoft® Word 2010
Creator                         : Microsoft® Word 2010
Create Date                     : 2012:10:30 13:51:12+08:00
Modify Date                     : 2012:10:30 13:51:12+08:00

EXIF Metadata provided by EXIF.tools

Device Network SDK Programming Manual(Decoder)

Navigation menu

Versions of this User Manual:

Views

Navigation