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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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2.2.1. Avalon-ST Video Control Packets
A control packet is identified when the low nibble of the first symbol is set to decimal 15 (0xF). The Avalon-ST Video protocol further defines that any other symbol data transmitted in the first cycle (or beat) of the transmission is ignored.
An Avalon-ST Video control packet comprises the identifier nibble, and 9 other nibbles which indicate the height, width and interlacing information of any subsequent Avalon-ST Video packets.
Figure 5. Avalon-ST Video Control PacketThe figure below shows the structure of a control packet in an Avalon-ST Video configuration of two 10 bit symbols (color planes) per pixel and two pixels in parallel. Observe the symbol-alignment of the control packet nibbles; the remaining bits in each symbol are undefined.
Note: Most VIP IP cores do not drive the empty signal for control packets because extra data is always ignored. Nevertheless, a value of two indicating that the last pixel of the final beat is invalid would be tolerated.
Nibble | Description |
---|---|
D0 | Width[15:12] |
D1 | Width[11:8] |
D2 | Width[7:4] |
D3 | Width[3:0] |
D4 | Height[15:12] |
D5 | Height[11:8] |
D6 | Height[7:4] |
D7 | Height[3:0] |
D8 | Interlacing[3:0] |
When the Interlacing nibble indicates an interlaced field, the height nibble gives the height of the individual fields and not that of the equivalent whole frame—for example, a control packet for 1080i video would show a height of 540, not 1080.
Interlaced/Progressive | Interlacing[3] | Interlacing[2] | Interlacing[1] | Interlacing[0] | Description |
---|---|---|---|---|---|
Interlaced | 1 | 1 | 0 | 0 | Interlaced F1 field, paired with the following F0 field |
0 | 1 | Interlaced F1 field, paired with the preceding F0 field | |||
1 | x | Interlaced F1 field, pairing don’t care | |||
0 | 0 | 0 | Interlaced F0 field, paired with the preceding F1 field | ||
0 | 1 | Interlaced F0 field, paired with the following F1 field | |||
1 | x | Interlaced F0 field, pairing don’t care | |||
Progressive | 0 | x | 0 | 1 | Progressive frame, deinterlaced from an f1 field |
0 | 0 | Progressive frame, deinterlaced from an f0 field | |||
1 | x | Progressive frame |