Rescale

Changes the dimensions of the input image while stretching/squeezing it. More...

Functions
VPIStatus	vpiSubmitRescale (VPIStream stream, uint64_t backend, VPIImage input, VPIImage output, VPIInterpolationType interpolationType, VPIBorderExtension border, uint64_t flags)
	Changes the size and scale of a 2D image. More...

Detailed Description

Changes the dimensions of the input image while stretching/squeezing it.

Refer to Rescale for more details and usage examples.

Function Documentation

vpiSubmitRescale()

VPIStatus vpiSubmitRescale	(	VPIStream	stream,
		uint64_t	backend,
		VPIImage	input,
		VPIImage	output,
		VPIInterpolationType	interpolationType,
		VPIBorderExtension	border,
		uint64_t	flags
	)

#include </opt/nvidia/vpi2/include/vpi/algo/Rescale.h>

Changes the size and scale of a 2D image.

Parameters

[in]	stream	The stream where the operation will be queued in. Must not be NULL. Stream must have enabled the backends that will execute the algorithm.
[in]	backend	VPI backend that will execute the algorithm. Valid values: VPI_BACKEND_CPU VPI_BACKEND_CUDA VPI_BACKEND_VIC
[in]	input	Input image to be rescaled. Must not be NULL. Image must have enabled the backends that will execute the algorithm. Dimensions must be >= 1x1. On VIC, valid range is >= 16x16 and <= 16384x16384. On VIC, when using YUV formats with chroma-subsampling of 4:2:0, 4:2:2 or 4:2:2R, the image dimensions must be even. Supported image formats are: Format CPU CUDA VIC VPI_IMAGE_FORMAT_U8 * * VPI_IMAGE_FORMAT_U16 * * VPI_IMAGE_FORMAT_S8 * * VPI_IMAGE_FORMAT_S16 * * VPI_IMAGE_FORMAT_F32 * * VPI_IMAGE_FORMAT_Y8 * * * VPI_IMAGE_FORMAT_Y8_ER * * * VPI_IMAGE_FORMAT_Y8_BL * VPI_IMAGE_FORMAT_Y8_ER_BL * VPI_IMAGE_FORMAT_Y16 * * * VPI_IMAGE_FORMAT_Y16_ER * * * VPI_IMAGE_FORMAT_Y16_BL * VPI_IMAGE_FORMAT_Y16_ER_BL * VPI_IMAGE_FORMAT_RGB8 * VPI_IMAGE_FORMAT_BGR8 * VPI_IMAGE_FORMAT_RGBA8 * * * VPI_IMAGE_FORMAT_BGRA8 * * * VPI_IMAGE_FORMAT_RGB8p * * VPI_IMAGE_FORMAT_BGR8p * * VPI_IMAGE_FORMAT_RGBA8p * * VPI_IMAGE_FORMAT_BGRA8p * * VPI_IMAGE_FORMAT_NV12 * * * VPI_IMAGE_FORMAT_NV12_ER * * * VPI_IMAGE_FORMAT_NV12_BL * VPI_IMAGE_FORMAT_NV12_ER_BL * VPI_IMAGE_FORMAT_NV24 * * * VPI_IMAGE_FORMAT_NV24_ER * * * VPI_IMAGE_FORMAT_NV24_BL * VPI_IMAGE_FORMAT_NV24_ER_BL * VPI_IMAGE_FORMAT_UYVY * VPI_IMAGE_FORMAT_UYVY_ER * VPI_IMAGE_FORMAT_UYVY_BL * VPI_IMAGE_FORMAT_UYVY_ER_BL * VPI_IMAGE_FORMAT_YUYV * VPI_IMAGE_FORMAT_YUYV_ER * VPI_IMAGE_FORMAT_YUYV_BL * VPI_IMAGE_FORMAT_YUYV_ER_BL *
[out]	output	Output image with the desired resulting dimensions. Must not be NULL. Image must have enabled the backends that will execute the algorithm. Dimensions must be >= 1x1. On VIC, valid range is >= 16x16 and <= 16384x16384. On VIC, when using YUV formats with chroma-subsampling of 4:2:0, 4:2:2 or 4:2:2R, the image dimensions must be even. On VIC, scale factor (output/input) must be between 1/16.0f and 16.0f. On VIC, input and output formats can be different. Accepted formats are the same as input, provided that the following constraints are met: No bit depth conversion is allowed, i.e., Y8 to Y16, Y16 to NV12, etc. No conversion from/to Y16_ER, except when only changing layout. Example: Y16_ER_BL to Y16_ER is allowed, but Y16_ER_BL to Y16 or Y16_BL isn't. On other backends, input and output formats must be the same.
[in]	interpolationType	Interpolation method to be used. Valid values: VPI_INTERP_NEAREST VPI_INTERP_LINEAR (VIC only supports this one) VPI_INTERP_CATMULL_ROM
[in]	border	Border extension to be used when sampling pixels outside the image border. The accepted border extensions are: VPI_BORDER_ZERO VPI_BORDER_CLAMP (VIC only supports this one)
[in]	flags	Control flags. Valid values are a combination of one or more of the following flags: 0: default, negation of all other flags. VPI_PRECISE : precise, but potentially slower implementation.

Return values

VPI_ERROR_INVALID_ARGUMENT	stream is NULL.
VPI_ERROR_INVALID_ARGUMENT	input or output are NULL.
VPI_ERROR_INVALID_ARGUMENT	input or output dimensions are outside valid range.
VPI_ERROR_INVALID_ARGUMENT	flags has some unsupported flag(s).
VPI_ERROR_INVALID_ARGUMENT	border not supported.
VPI_ERROR_INVALID_ARGUMENT	interpolationType not supported.
VPI_ERROR_INVALID_ARGUMENT	backend is invalid or unknown.
VPI_ERROR_INVALID_ARGUMENT	input and output formats are not compatible.
VPI_ERROR_INVALID_IMAGE_FORMAT	input or output format not supported.
VPI_ERROR_NOT_IMPLEMENTED	Rescale algorithm is not supported by given backend.
VPI_ERROR_INVALID_OPERATION	Backend hardware not available.
VPI_ERROR_INVALID_OPERATION	The needed backends aren't enabled in stream, input or output.
VPI_SUCCESS	Operation executed successfully.