Defines types and functions to handle pixel types. More...

#include "DataLayout.h"
#include "detail/FormatUtils.h"

Include dependency graph for PixelType.h:

This graph shows which files directly or indirectly include this file:

#define	VPI_PIXEL_TYPE_DEFAULT ((VPIPixelType)0)
	Used to signal that the pixel type must be inferred from image format.

#define	VPI_PIXEL_TYPE_INVALID VPI_PIXEL_TYPE_DEFAULT
	Signal format conversion errors.

#define	VPI_PIXEL_TYPE_U8 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X8)
	One channel of unsigned 8-bit value.

#define	VPI_PIXEL_TYPE_2U8 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X8_Y8)
	Two interleaved channels of unsigned 8-bit values.

#define	VPI_PIXEL_TYPE_3U8 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X8_Y8_Z8)
	Three interleaved channels of unsigned 8-bit values.

#define	VPI_PIXEL_TYPE_4U8 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X8_Y8_Z8_W8)
	Four interleaved channels of unsigned 8-bit values.

#define	VPI_PIXEL_TYPE_S8 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X8)
	One channel of signed 8-bit value.

#define	VPI_PIXEL_TYPE_2S8 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X8_Y8)
	Two interleaved channels of signed 8-bit values.

#define	VPI_PIXEL_TYPE_3S8 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X8_Y8_Z8)
	Three interleaved channels of signed 8-bit values.

#define	VPI_PIXEL_TYPE_4S8 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X8_Y8_Z8_W8)
	Four interleaved channels of signed 8-bit values.

#define	VPI_PIXEL_TYPE_U16 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X16)
	One channel of unsigned 16-bit value.

#define	VPI_PIXEL_TYPE_2U16 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X16_Y16)
	Two interleaved channels of unsigned 16-bit values.

#define	VPI_PIXEL_TYPE_3U16 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X16_Y16_Z16)
	Three interleaved channels of unsigned 16-bit values.

#define	VPI_PIXEL_TYPE_4U16 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X16_Y16_Z16_W16)
	Four interleaved channels of unsigned 16-bit values.

#define	VPI_PIXEL_TYPE_S16 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X16)
	One channel of signed 16-bit value.

#define	VPI_PIXEL_TYPE_2S16 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X16_Y16)
	Two interleaved channels of signed 16-bit values.

#define	VPI_PIXEL_TYPE_3S16 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X16_Y16_Z16)
	Three interleaved channels of signed 16-bit values.

#define	VPI_PIXEL_TYPE_4S16 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X16_Y16_Z16_W16)
	Four interleaved channels of signed 16-bit values.

#define	VPI_PIXEL_TYPE_U32 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X32)
	One channel of unsigned 32-bit value.

#define	VPI_PIXEL_TYPE_2U32 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X32_Y32)
	Two interleaved channels of unsigned 32-bit values.

#define	VPI_PIXEL_TYPE_3U32 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X32_Y32_Z32)
	Three interleaved channels of unsigned 32-bit values.

#define	VPI_PIXEL_TYPE_4U32 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X32_Y32_Z32_W32)
	Four interleaved channels of unsigned 32-bit values.

#define	VPI_PIXEL_TYPE_S32 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X32)
	One channel of signed 32-bit value.

#define	VPI_PIXEL_TYPE_2S32 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X32_Y32)
	Two interleaved channels of signed 32-bit values.

#define	VPI_PIXEL_TYPE_3S32 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X32_Y32_Z32)
	Three interleaved channels of signed 32-bit values.

#define	VPI_PIXEL_TYPE_4S32 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X32_Y32_Z32_W32)
	Four interleaved channels of signed 32-bit values.

#define	VPI_PIXEL_TYPE_F32 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X32)
	One channel of 32-bit IEEE 754 floating-point value.

#define	VPI_PIXEL_TYPE_2F32 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X32_Y32)
	Two interleaved channels of 32-bit IEEE 754 floating-point values.

#define	VPI_PIXEL_TYPE_3F32 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X32_Y32_Z32)
	Three interleaved channels of 32-bit IEEE 754 floating-point values.

#define	VPI_PIXEL_TYPE_4F32 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X32_Y32_Z32_W32)
	Four interleaved channels of 32-bit IEEE 754 floating-point values.

#define	VPI_PIXEL_TYPE_U64 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X64)
	One channel of unsigned 64-bit value.

#define	VPI_PIXEL_TYPE_2U64 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X64_Y64)
	Two interleaved channels of unsigned 64-bit values.

#define	VPI_PIXEL_TYPE_3U64 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X64_Y64_Z64)
	Three interleaved channels of unsigned 64-bit values.

#define	VPI_PIXEL_TYPE_4U64 VPI_DETAIL_MAKE_PIX_TYPE(PL, UNSIGNED, X64_Y64_Z64_W64)
	Four interleaved channels of unsigned 64-bit values.

#define	VPI_PIXEL_TYPE_S64 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X64)
	One channel of signed 64-bit value.

#define	VPI_PIXEL_TYPE_2S64 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X64_Y64)
	Two interleaved channels of signed 64-bit values.

#define	VPI_PIXEL_TYPE_3S64 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X64_Y64_Z64)
	Three interleaved channels of signed 64-bit values.

#define	VPI_PIXEL_TYPE_4S64 VPI_DETAIL_MAKE_PIX_TYPE(PL, SIGNED, X64_Y64_Z64_W64)
	Four interleaved channels of signed 64-bit values.

#define	VPI_PIXEL_TYPE_F64 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X64)
	One channel of 64-bit IEEE 754 floating-point value.

#define	VPI_PIXEL_TYPE_2F64 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X64_Y64)
	Two interleaved channels of 64-bit IEEE 754 floating-point values.

#define	VPI_PIXEL_TYPE_3F64 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X64_Y64_Z64)
	Three interleaved channels of 64-bit IEEE 754 floating-point values.

#define	VPI_PIXEL_TYPE_4F64 VPI_DETAIL_MAKE_PIX_TYPE(PL, FLOAT, X64_Y64_Z64_W64)
	Four interleaved channels of 64-bit IEEE 754 floating-point values.

#define	VPI_MAKE_PIXEL_TYPE_ABBREV(memLayout, dataType, packing)
	Creates a user-defined pixel type constant using abbreviated parameters. More...

#define	VPI_MAKE_PIXEL_TYPE(memLayout, dataType, packing)
	Creates a user-defined pixel type constant. More...

typedef uint64_t	VPIPixelType
	Pre-defined pixel types. More...

VPIPixelType	vpiMakePixelType (VPIMemLayout memLayout, VPIDataType dataType, VPIPacking packing)
	Creates a user-defined pixel type. More...

VPIPacking	vpiPixelTypeGetPacking (VPIPixelType type)
	Get the packing of a pixel type. More...

int	vpiPixelTypeGetBitsPerPixel (VPIPixelType type)
	Get the number of bits per pixel of a pixel type. More...

void	vpiPixelTypeGetBitsPerChannel (VPIPixelType type, int32_t *bits)
	Get the number of bits per channel of a pixel type. More...

VPIDataType	vpiPixelTypeGetDataType (VPIPixelType type)
	Get the data type of a pixel type. More...

VPIMemLayout	vpiPixelTypeGetMemLayout (VPIPixelType type)
	Get the memory layout of a pixel type. More...

VPIPixelType	vpiPixelTypeSetMemLayout (VPIPixelType type, VPIMemLayout layout)
	Set the memory layout of a pixel type. More...

int	vpiPixelTypeGetChannelCount (VPIPixelType type)
	Get the number of channels of a pixel type. More...

const char *	vpiPixelTypeGetName (VPIPixelType type)
	Returns a string representation of the pixel type. More...

VPIPixelType	vpiPixelTypeGetChannelType (VPIPixelType type, int channel)
	Get the pixel type for a given channel index. More...

Detailed Description

Defines types and functions to handle pixel types.

Definition in file PixelType.h.

Macro Definition Documentation

◆ VPI_MAKE_PIXEL_TYPE_ABBREV

#define VPI_MAKE_PIXEL_TYPE_ABBREV	(	memLayout,
		dataType,
		packing
	)

Creates a user-defined pixel type constant using abbreviated parameters.

This macro allows passing abbreviated format parameters (without the parameter type prefix). Example to create a block-linear format two interleaved 32-bit floating point channels:

VPIPixelType type = VPI_MAKE_PIXEL_TYPE_ABBREV(BL, FLOAT, X32_Y32);

VPI_MAKE_PIXEL_TYPE_ABBREV

#define VPI_MAKE_PIXEL_TYPE_ABBREV(memLayout, dataType, packing)

Creates a user-defined pixel type constant using abbreviated parameters.

Definition: PixelType.h:194

VPIPixelType

uint64_t VPIPixelType

Pre-defined pixel types.

Definition: PixelType.h:78

Parameters

[in]	memLayout	VPIMemLayout to be used, without the VPI_MEM_LAYOUT_ prefix.
[in]	dataType	VPIDataType to be used, without the VPI_DATA_TYPE_ prefix.
[in]	packing	Format packing used, which also defines the number of channels, without the VPI_PACKING_ prefix.

Returns: The user-defined pixel type.

Definition at line 194 of file PixelType.h.

◆ VPI_MAKE_PIXEL_TYPE

#define VPI_MAKE_PIXEL_TYPE	(	memLayout,
		dataType,
		packing
	)

Creates a user-defined pixel type constant.

Example to create a block-linear format two interleaved 32-bit floating point channels:

VPIPixelType type = VPI_MAKE_PIXEL_TYPE(VPI_MEM_LAYOUT_BL, VPI_DATA_TYPE_FLOAT, VPI_PACKING_X32_Y32);

VPI_MAKE_PIXEL_TYPE

#define VPI_MAKE_PIXEL_TYPE(memLayout, dataType, packing)

Creates a user-defined pixel type constant.

Definition: PixelType.h:213

VPI_PACKING_X32_Y32

@ VPI_PACKING_X32_Y32

Two 32-bit channels in two 32-bit words.

Definition: DataLayout.h:233

VPI_MEM_LAYOUT_BL

@ VPI_MEM_LAYOUT_BL

Definition: DataLayout.h:315

VPI_DATA_TYPE_FLOAT

@ VPI_DATA_TYPE_FLOAT

Channel are floating point values.

Definition: DataLayout.h:272

Parameters

[in]	memLayout	VPIMemLayout to be used.
[in]	dataType	VPIDataType to be used.
[in]	packing	Format packing used, which also defines the number of channels.

Returns: The user-defined pixel type.

Definition at line 213 of file PixelType.h.

Function Documentation

◆ vpiMakePixelType()

VPIPixelType vpiMakePixelType	(	VPIMemLayout	memLayout,
		VPIDataType	dataType,
		VPIPacking	packing
	)

Creates a user-defined pixel type.

When the pre-defined pixel types aren't enough, user-defined formats can be created.

Parameters

[in]	memLayout	VPIMemLayout to be used. Mandatory, must not be VPI_MEM_LAYOUT_INVALID.
[in]	dataType	VPIDataType to be used. Mandatory, must not be VPI_DATA_TYPE_INVALID.
[in]	packing	Format packing used, which also defines the number of channels. Mandatory, must not be VPI_PACKING_INVALID.

Returns: The user-defined pixel type.

Return values

VPI_PIXEL_TYPE_INVALID	Invalid `memLayout`.
VPI_PIXEL_TYPE_INVALID	Invalid `dataType`.
VPI_PIXEL_TYPE_INVALID	Invalid `packing`.

◆ vpiPixelTypeGetPacking()

VPIPacking vpiPixelTypeGetPacking ( VPIPixelType type )

Get the packing of a pixel type.

Parameters

[in]

type

Pixel type to be queried.

Mandatory, must not be VPI_PIXEL_TYPE_INVALID.

Returns: The format's packing.

Return values

VPI_PACKING_0 type is invalid.

◆ vpiPixelTypeGetBitsPerPixel()

int vpiPixelTypeGetBitsPerPixel ( VPIPixelType type )

Get the number of bits per pixel of a pixel type.

Parameters

[in]

type

Pixel type to be queried.

Mandatory, must not be VPI_PIXEL_TYPE_INVALID.

Returns: The number of bits per pixel.

Return values

0	`type` is invalid.

◆ vpiPixelTypeGetBitsPerChannel()

void vpiPixelTypeGetBitsPerChannel	(	VPIPixelType	type,
		int32_t *	bits
	)

Get the number of bits per channel of a pixel type.

Parameters

[in]	type	Pixel type to be queried. Mandatory, must not be VPI_PIXEL_TYPE_INVALID.
[out]	bits	Pointer to an int32_t array with 4 elements where output will be stored. If it is NULL, the function is a no-op, i.e., buffer pointed by `bits` is unchanged.

◆ vpiPixelTypeGetDataType()

VPIDataType vpiPixelTypeGetDataType ( VPIPixelType type )

Get the data type of a pixel type.

Parameters

[in]

type

Pixel type to be queried.

Mandatory, must not be VPI_PIXEL_TYPE_INVALID.

Returns: The data type of the pixel type.

Return values

VPI_DATA_TYPE_INVALID type is invalid.

◆ vpiPixelTypeGetMemLayout()

VPIMemLayout vpiPixelTypeGetMemLayout ( VPIPixelType type )

Get the memory layout of a pixel type.

Parameters

[in]

type

Pixel type to be queried.

Mandatory, must not be VPI_PIXEL_TYPE_INVALID.

Returns: The memory layout of the pixel type.

Return values

VPI_MEM_LAYOUT_INVALID type is invalid.

◆ vpiPixelTypeSetMemLayout()

VPIPixelType vpiPixelTypeSetMemLayout	(	VPIPixelType	type,
		VPIMemLayout	layout
	)

Set the memory layout of a pixel type.

Parameters

[in]	type	Pixel type to have its memory layout set. Mandatory, must not be VPI_PIXEL_TYPE_INVALID.
[in]	layout	The memory layout to be set. Mandatory, must not be VPI_MEM_LAYOUT_INVALID.

Returns: The pixel type with the requested memory layout.

Return values

VPI_PIXEL_TYPE_INVALID type or layout are invalid.

◆ vpiPixelTypeGetChannelCount()

int vpiPixelTypeGetChannelCount ( VPIPixelType type )

Get the number of channels of a pixel type.

Parameters

[in]

type

Pixel type to be queried.

Mandatory, must not be VPI_PIXEL_TYPE_INVALID.

Returns: The number of channels of the pixel type.

Return values

0	`type` is invalid.

◆ vpiPixelTypeGetName()

const char* vpiPixelTypeGetName ( VPIPixelType type )

Returns a string representation of the pixel type.

Parameters

[in] type Pixel type to be returned.

Returns: The string representation of the pixel type. Returned string is valid until next call of this function from the same calling thread. Returned pointer must not be freed.

◆ vpiPixelTypeGetChannelType()

VPIPixelType vpiPixelTypeGetChannelType	(	VPIPixelType	type,
		int	channel
	)

Get the pixel type for a given channel index.

It returns a single-channel pixel type that corresponds to the given channel of the input pixel type.

For instance: The channel #2 of VPI_PIXEL_TYPE_3U8 is VPI_PIXEL_TYPE_U8.

The requested channel must have a type whose packing is one of the following:

Parameters

[in]	type	Pixel type to be queried. Mandatory, must not be VPI_PIXEL_TYPE_INVALID.
[in]	channel	Channel whose pixel type is to be returned. Must be between 0 and the maximum number of channels in `type`.

Returns: The pixel type of the given channel. The memory layout and data type are the same as type.

Return values

VPI_PIXEL_TYPE_INVALID	`type` is invalid.
VPI_PIXEL_TYPE_INVALID	`channel` is outside valid range.

VPI - Vision Programming Interface

3.0 Release

Detailed Description

Macro Definition Documentation

◆ VPI_MAKE_PIXEL_TYPE_ABBREV

◆ VPI_MAKE_PIXEL_TYPE

Function Documentation

◆ vpiMakePixelType()

◆ vpiPixelTypeGetPacking()

◆ vpiPixelTypeGetBitsPerPixel()

◆ vpiPixelTypeGetBitsPerChannel()

◆ vpiPixelTypeGetDataType()

◆ vpiPixelTypeGetMemLayout()

◆ vpiPixelTypeSetMemLayout()

◆ vpiPixelTypeGetChannelCount()

◆ vpiPixelTypeGetName()

◆ vpiPixelTypeGetChannelType()