SIPL Multi Instances

The nvsipl_multicast application supports creating multiple INvSIPLCamera instances via creating mulitple channels.

Different INvSIPLCamera instances manage different camera modules groups, which can start or stop at different times.

Functionality and Behavior

1. Supports launching different camera modules defined in the dynamic platform configuration using the following command (using multiple -c and -m parameters):

   Dynamic platform configurations:

   ./nvsipl_multicast -c SG3_ISX031_H190X_YUV_8_CPHY_x4 -m "1 0 0 0" -p "cuda" \
                      -c R0SIM728S2RU2120NB1_MAX96724_CPHY_x4 -m "0 0 1" -p "cuda"
   

   Static platform configurations:

   ./nvsipl_multicast -t SG3_ISX031_H190X_YUV_8_CPHY_x2 -p "cuda" \
                      -t R0SIM728S2RU2120NB1_MAX96724_CPHY_x4 -p "cuda"
   

   Note

   It is not possible to use both dynamic and static platform configurations simultaneously.

   Note

   Multiple channels are only supported in intra-process scenarios.

   Note

   Multiple channels cannot be created using the same platform configuration name. If camera modules share the same configuration, group them into one channel.

2. Supports quick-starting cameras independently by launching different platform configurations at different times.

3. Supports restarting cameras with different platform configurations independently, without affecting others.

Control Flow

The following diagram shows the SIPL multi-instance control flow:

Data Flow

The following diagram illustrates the SIPL multi-instance data flow:

Error Handling

The SIPL DevblkNotificationHandler receives notifications from the SIPLNotificationQueue and retrieves deserializer or camera module-related error information from NvSiplCamera. Then, the OnError callback is triggered from CSIPLModule to CChannel and CManager.

Constraints

1. The SIPL module supports only separate instances of camera modules in different groups. It cannot create multiple instances within a single group.

2. The encoder module requires input data in YUV420SP block linear format. If using a YUV camera, convert the data from pitch linear to block linear before sending it to the encoder.