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1. About the Video and Image Processing Suite
2. Avalon Streaming Video
3. Clocked Video
4. VIP Run-Time Control
5. Getting Started
6. VIP Connectivity Interfacing
7. Clocked Video Interface IPs
8. 2D FIR II IP Core
9. Mixer II IP Core
10. Clipper II IP Core
11. Color Plane Sequencer II IP Core
12. Color Space Converter II IP Core
13. Chroma Resampler II IP Core
14. Control Synchronizer IP Core
15. Deinterlacer II IP Core
16. Frame Buffer II IP Core
17. Gamma Corrector II IP Core
18. Configurable Guard Bands IP Core
19. Interlacer II IP Core
20. Scaler II IP Core
21. Switch II IP Core
22. Test Pattern Generator II IP Core
23. Trace System IP Core
24. Warp Lite Intel FPGA IP
25. Avalon-ST Video Stream Cleaner IP Core
26. Avalon-ST Video Monitor IP Core
27. VIP IP Core Software Control
28. Security Considerations
29. Video and Image Processing Suite User Guide Archives
30. Document Revision History for the Video and Image Processing Suite User Guide
A. Avalon-ST Video Verification IP Suite
7.1. Supported Features for Clocked Video Output II IP
7.2. Control Port
7.3. Clocked Video Input IP Format Detection
7.4. Clocked Video Output IP Video Modes
7.5. Clocked Video Output II Latency Mode
7.6. Generator Lock
7.7. Underflow and Overflow
7.8. Timing Constraints
7.9. Handling Ancillary Packets
7.10. Modules for Clocked Video Input II IP Core
7.11. Clocked Video Input II Signals, Parameters, and Registers
7.12. Clocked Video Output II Signals, Parameters, and Registers
15.1. Deinterlacing Algorithm Options
15.2. Deinterlacing Algorithms
15.3. Run-time Control
15.4. Pass-Through Mode for Progressive Frames
15.5. Cadence Detection (Motion Adaptive Deinterlacing Only)
15.6. Avalon-MM Interface to Memory
15.7. Motion Adaptive Mode Bandwidth Requirements
15.8. Avalon-ST Video Support
15.9. 4K Video Passthrough Support
15.10. Behavior When Unexpected Fields are Received
15.11. Handling of Avalon-ST Video Control Packets
15.12. Deinterlacer II Parameter Settings
15.13. Deinterlacing Control Registers
A.3.1. c_av_st_video_control
A.3.2. c_av_st_video_data
A.3.3. c_av_st_video_file_io
A.3.4. c_av_st_video_item
A.3.5. c_av_st_video_source_sink_base
A.3.6. c_av_st_video_sink_bfm_’SINK
A.3.7. c_av_st_video_source_bfm_’SOURCE
A.3.8. c_av_st_video_user_packet
A.3.9. c_pixel
A.3.10. av_mm_transaction
A.3.11. av_mm_master_bfm_`MASTER_NAME
A.3.12. av_mm_slave_bfm_`SLAVE_NAME
A.3.13. av_mm_control_register
A.3.14. av_mm_control_base
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16.4. Handling of Avalon-ST Video Control Packets and User Packets
The Frame Buffer II IP core stores non-image data packets in memory.
Some applications may repeat and drop the user packets together with their associated frame. For example, if the packets contain frame-specific information such as a frame ID.
The behavior of the IP core is not determined by the field dimensions announced in the Avalon-ST Video control packets and relies exclusively on the startofpacket and endofpacket signals to delimit the frame boundaries.
- The IP core consequently handles and propagates mislabeled frames. Use this feature in a system where you cannot drop a frame. The latency introduced during the buffering could provide enough time to correct the invalid control packet.
- The buffering and propagation of image data packets incompatible with preceding control packets is an undesired behavior in most systems. Dropping invalid frames is often a convenient and acceptable way of dealing with glitches from the video input.
You can parameterize the Frame Buffer II IP core to drop all mislabeled fields or frames at compile time.
To drop and repeat user packets:
- Set the user packet affinity bit (bit 1) of the Misc. register.
- Turn on Drop invalid frames parameter.
Turn on the Frame repeating parameter to guarantee that reader keeps on repeating the last valid received frame— freezes the output—when the input drops.