Video and Vision Processing Suite Intel® FPGA IP User Guide

ID 683329
Date 8/08/2022
Public

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16.5. Deinterlacer IP Software API

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

Register definition header file: intel_vvp_dil_regs.h

Include file: intel_vvp_dil.h

Table 231.  Deinterlacer IP Software API
Name Description
intel_vvp_dil_init Initialize the Deinterlacer instance
Intel_vvp_core_* Accessors defined in Video and Vision Processing IPs Software Programming Model
intel_vvp_dil_get_lite_mode Returns lite mode is on
intel_vvp_dil_get_debug_enabled Returns debug features is on.
Intel_vvp_dil_get_max_width Returns the maximum supported width
intel_vvp_dil_get_dil_algorithm Returns the deinterlacing algorithm
intel_vvp_dil_get_field_sync Returns the field synchronization method
intel_vvp_dil_is_running Returns if the IP is processing data
intel_vvp_dil_get_status Reads the status register
enum eIntelVvpDilAlgorithms
Members

kIntelVvpDilBobAlgo (0) – Bob deinterlacing

kIntelVvpDilAlgoErr (-1) – Invalid deinterlacing algorithm

Description
Enumeration for the deinterlacing algorithm supported by the IP

enum eIntelVvpDilFieldSyncs

Members

kIntelVvpDilDeinterlaceSyncF0 – Synchronization on F0 (input frame rate = output frame rate)

kIntelVvpDilDeinterlaceSyncF0 – Synchronization on F1 (input frame rate = output frame rate)

kIntelVvpDilDeinterlaceSyncBoth – Synchronization on F0 and F1 (input field rate = output frame rate)

Description
Enumeration for the three supported field-to-frame rate conversions

intel_vvp_dil_init

Prototype
 int intel_vvp_dil_init(intel_vvp_dil_instance *instance, intel_vvp_core_base base);
Description
Initializes a deinterlacer 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 is not fully initialized and the application should not use it further if returning a non-zero error code.
Arguments
instance – pointer to the intel_vvp_dil_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 Deinterlacer product ID

kIntelVvpCoreInstanceErr if the instance is a null pointer

kIntelVvpDilRegMapVersionErr if the register map is not supported

intel_vvp_dil_get_lite_mode

Prototype
bool intel_vvp_dil_get_lite_mode(intel_vvp_dil_instance *instance);
Description
Returns the value of the LITE_MODE register. The instance must be a valid intel_vvp_dil_instance fully initialized
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
true if the IP is parameterized in lite mode

intel_vvp_dil_get_debug_enabled

Prototype
 bool intel_vvp_dil_get_debug_enabled(intel_vvp_dil_instance *instance);
Description
Returns the value of the DEBUG_ENABLED register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
true if the IP is parameterized with debug features enabled

intel_vvp_dil_get_max_width

Prototype
uint32_t intel_vvp_dil_get_max_widh(intel_vvp_dil_instance *instance);
Description
Returns the value of the MAX_WIDTH register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
Maximum supported width

intel_vvp_dil_get_dil_algorithm

Prototype
eIntelVvpDilAlgorithms_t intel_vvp_dil_get_dil_algorithm(intel_vvp_dil_instance *instance);
Description
Returns the value of the deinterlacing algorithm register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
Deinterlacing algorithm selected at compile-time

intel_vvp_dil_get_field_sync

Prototype
eIntelVvpDilFieldSyncs intel_vvp_dil_get_field_sync(intel_vvp_dil_instance *instance);
Description
Returns the value of the field synchronization register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
Field synchronization algorithm selected at compile-time

intel_vvp_dil_is_running

Prototype
bool intel_vvp_ dil _is_running(intel_vvp_dil_instance* instance);
Description
Reads and returns the running bit of the STATUS register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
True is the IP is currently generating an output field, false when between two fields

intel_vvp_dil_get_status

Prototype
uint8_t intel_vvp_dil_get_status(intel_vvp_tpg_instance* instance);
Description
Reads and returns the STATUS register. The instance must be a valid intel_vvp_dil_instance fully initialized.
Arguments
instance – pointer to the intel_vvp_dil_instance software driver instance structure
Returns
The value read from the status register