Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 9/30/2022
Public

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Document Table of Contents
1. About the Video and Vision Processing Suite 2. Getting Started with the Video and Vision Processing IPs 3. Video and Vision Processing IPs Functional Description 4. Video and Vision Processing IP Interfaces 5. Video and Vision Processing IP Registers 6. Video and Vision Processing IPs Software Programming Model 7. Protocol Converter Intel® FPGA IP 8. 3D LUT Intel® FPGA IP 9. AXI-Stream Broadcaster Intel® FPGA IP 10. Chroma Key Intel® FPGA IP 11. Chroma Resampler Intel® FPGA IP 12. Clipper Intel® FPGA IP 13. Clocked Video Input Intel® FPGA IP 14. Clocked Video to Full-Raster Converter Intel® FPGA IP 15. Clocked Video Output Intel® FPGA IP 16. Color Space Converter Intel® FPGA IP 17. Deinterlacer Intel® FPGA IP 18. FIR Filter Intel® FPGA IP 19. Frame Cleaner Intel® FPGA IP 20. Full-Raster to Clocked Video Converter Intel® FPGA IP 21. Full-Raster to Streaming Converter Intel® FPGA IP 22. Generic Crosspoint Intel® FPGA IP 23. Genlock Signal Router Intel® FPGA IP 24. Guard Bands Intel® FPGA IP 25. Interlacer Intel® FPGA IP 26. Mixer Intel® FPGA IP 27. Pixels in Parallel Converter Intel® FPGA IP 28. Scaler Intel® FPGA IP 29. Stream Cleaner Intel® FPGA IP 30. Switch Intel® FPGA IP 31. Tone Mapping Operator Intel® FPGA IP 32. Test Pattern Generator Intel® FPGA IP 33. Video Frame Buffer Intel® FPGA IP 34. Video Streaming FIFO Intel® FPGA IP 35. Video Timing Generator Intel® FPGA IP 36. Warp Intel® FPGA IP 37. Design Security 38. Document Revision History for Video and Vision Processing Suite User Guide

24.5. Guard Bands IP Software API

The IP includes software for run-time control. The IP does not fit any of the generic device models provided by the Nios II HAL and it exposes a set of dedicated accessors to the control and status registers. The IP driver structure inherits the base driver structure so all common methods defined in Video and Vision Processing IPs Software API are applicable.

Register definition header file: intel_vvp_guard_bands_regs.h

Include file: intel_vvp_guard_bands.h

Table 366.  Guard Bands IP API reference
Name Description
intel_vvp_ guard_bands _init Initialize the Guard Bands instance
Intel_vvp_core_* Accessors defined in Video and Vision Processing IPs Software Programming Model . Writable when Lite is on. Readable when Lite is off and Debug features is on.
intel_vvp_guard_bands_get_lite_mode Returns if lite mode is on
intel_vvp_guard_bands_get_debug_enabled Returns if debug features is on
intel_vvp_guard_bands_get_num_planes Returns the number of color planes
intel_vvp_guard_bands_is_running Returns if the IP is producing data
intel_vvp_guard_bands_get_commit_status Returns if the IP has uncommitted writes
intel_vvp_guard_bands_get_status Reads the status register
intel_vvp_guard_bands_set_color_min_max Selects the clipping values for a color plane
intel_vvp_guard_bands_set_min_max Sets clipping values for all color planes
intel_vvp_guard_bands_get_color_min_max Retrieves the clipping values for a color plane
intel_vvp_guard_bands_get_min_max Retrieves clipping values for all color planes
intel_vvp_guard_bands_commit_writes Commit all outstanding writes

struct intel_vvp_min_max

Members
struct {uint16_t min; uint16_t max;} planes[4];
Description

Clipping boundary values for each color plane

intel_vvp_guard_bands_init

Prototype
int intel_vvp_guard_bands_init(intel_vvp_guard_bands_instance *instance, intel_vvp_core_base base);
Description

Initializes a Guard Bands instance. The initialization stops early if the vendor ID or product ID read at the base address are not a match or if the register map version is not supported. Otherwise, the function proceeds to read and store the IP compile-time parameterization. The instance does not fully initialized and should not be used further by the application if returning a non-zero error code.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

base – base address of the register map

Returns

kIntelVvpCoreOk (0) in case of success, a negative error code in case of error

kIntelVvpCoreVidErr if the vendor id of the core is not the IntelFPGA vendor ID (0x6AF7).

kIntelVvpCorePidErr if the product_id does not match with the Guard Bands product ID

kIntelVvpCoreInstanceErr if the instance is a null pointer

kIntelVvpGuardBandsRegMapVersionErr if the register map is not supported

intel_vvp_guard_bands_get_lite_mode

Prototype
 bool intel_vvp_guard_bands_get_lite_mode(intel_vvp_guard_bands_instance *instance);
Description

Returns the value of the LITE_MODE register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

true if the IP is parameterized in lite mode

intel_vvp_guard_bands_get_debug_enabled

Prototype
int intel_vvp_guard_bands_get_debug_enabled(intel_vvp_guard_bands_instance
 *instance);
Description

Returns the value of the DEBUG_ENABLED register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

true if the IP is parameterized with debug features enabled

intel_vvp_guard_bands_get_num_planes

Prototype
uint8_t intel_vvp_guard_bands_get_num_planes(intel_vvp_guard_bands_instance* instance);
Description

Returns the value of the NUM_GB register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

The number of color planes in the video stream (4:2:2 is three color planes)

intel_vvp_guard_bands_is_running

Prototype
bool intel_vvp_guard_bands_is_running(intel_vvp_guard_bands_instance* instance);
Description

Reads and returns the running bit of the STATUS register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

True is the Guard Bands is currently generating an output field, false when between two fields

intel_vvp_guard_bands_get_commit_status

Prototype
bool intel_vvp_guard_bands_get_commit_status(intel_vvp_guard_bands_instance* instance);
Description

Reads and returns the commit pending bit of the STATUS register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized and configured in full mode.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

True is the Guard Bands is configured in full mode and if the agent interface contains uncommitted writes.

intel_vvp_guard_bands_get_status

Prototype
uint8_t intel_vvp_guard_bands_get_status(intel_vvp_guard_bands_instance* instance);
Description

Reads and returns the STATUS register. The instance must be a valid intel_vvp_guard_bands_instance fully initialized.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

The value read from the status register

intel_vvp_guard_bands_set_color_min_max

Prototype
int intel_vvp_guard_bands_set_color_min_max (intel_vvp_guard_bands_instance* instance, uint8_t color, uint16_t min, uint16_t max);
Description

Sets the minimum and maximum allowed values, before clipping, for the chosen color plane. The instance must be a valid intel_vvp_guard_bands_instance fully initialized and the color plane must be valid

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

color – the identifier for the color plane needing new clipping boundaries. The valid range is [0..num_color_planes-1] where num_color_planes is returned by intel_vvp_guard_bands_get_num_planes(…)

min, max – new clipping boundaries

Returns

kIntelVvpCoreOk (0) for success, negative error code otherwise

kIntelVvpCoreInstanceErr if the instance is invalid

kIntelVvpGuardBandsParameterErr if the color plane is invalid

intel_vvp_guard_bands_set_min_max

Prototype
int intel_vvp_guard_bands_set_min_max (intel_vvp_guard_bands_instance* instance, const intel_vvp_min_max* min_max);
Description

Sets the minimum and maximum allowed values, before clipping, for all color planes. The instance must be a valid intel_vvp_guard_bands_instance fully initialized.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

min_max – new clipping boundaries

Returns

kIntelVvpCoreOk (0) for success, negative error code otherwise

kIntelVvpCoreInstanceErr if the instance is invalid

kIntelVvpCoreNullPtrErr if min_max is the NULL pointer

intel_vvp_guard_bands_get_color_min_max

Prototype
int intel_vvp_guard_bands_get_color_min_max (intel_vvp_guard_bands_instance* instance, uint8_t color, uint16_t *min, uint16_t *max);
Description

Retrieves the minimum and maximum allowed values, before clipping, for the chosen color plane. The instance must be a valid intel_vvp_guard_bands_instance, fully initialized, configured with debug enabled, and the color plane must be valid

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

color – the identifier for the color plane. The valid range is [0..num_color_planes-1] where num_color_planes is returned by intel_vvp_guard_bands_get_num_planes(…)

min, max – Valid pointers to uint16_t variables to store the results

Returns

kIntelVvpCoreOk (0) for success, negative error code otherwise

kIntelVvpCoreNullPtrErr if min or max are the NULL pointer

kIntelVvpCoreInstanceErr if the instance is invalid

kIntelVvpGuardBandsParameterErr if the color plane is invalid

intel_vvp_guard_bands_get_min_max

Prototype
int intel_vvp_guard_bands_get_min_max (intel_vvp_guard_bands_instance* instance, intel_vvp_min_max* min_max);
Description

Retrieves the minimum and maximum allowed values, before clipping, for all color planes. The instance must be a valid intel_vvp_guard_bands_instance fully initialized and configured with debug enabled

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

min_max – returned clipping boundaries

Returns

kIntelVvpCoreOk (0) for success, negative error code otherwise

kIntelVvpCoreInstanceErr if the instance is invalid

kIntelVvpCoreNullPtrErr if min_max is the NULL pointer

intel_vvp_guard_bands_commit_writes

Prototype
int intel_vvp_guard_bands_commit_writes(intel_vvp_guard_bands_instance* instance)
Description

Commits all pending writes before starting the next output field. The instance must be valid and parameterized in full mode.

Arguments

instance – pointer to the intel_vvp_guard_bands_instance software driver instance structure

Returns

kIntelVvpCoreOk (0) for success, negative error code otherwise

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