(3dce9b5818576f04ce21cec4b3686eda012e5b65)

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <cmath>
#include <map>
#include <string>
#include <vector>
#include "core/fxcrt/fx_memory.h"
#include "testing/image_diff/image_diff_png.h"
#include "testing/utils/path_service.h"
#include "third_party/base/numerics/safe_conversions.h"

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Classes
class	Image

struct	UnpackedPixel

Functions
float	CalculateDifferencePercentage (const Image &actual, int pixels_different)

void	CountImageSizeMismatchAsPixelDifference (const Image &baseline, const Image &actual, int *pixels_different)

uint8_t	ChannelDelta (uint8_t baseline_channel, uint8_t actual_channel)

uint8_t	MaxPixelPerChannelDelta (const UnpackedPixel &baseline_pixel, const UnpackedPixel &actual_pixel)

float	PercentageDifferent (const Image &baseline, const Image &actual, uint8_t max_pixel_per_channel_delta)

float	HistogramPercentageDifferent (const Image &baseline, const Image &actual)

void	PrintHelp (const std::string &binary_name)

int	CompareImages (const std::string &binary_name, const std::string &file1, const std::string &file2, bool compare_histograms, bool reverse_byte_order, uint8_t max_pixel_per_channel_delta)

bool	CreateImageDiff (const Image &image1, const Image &image2, Image *out)

bool	SubtractImages (const Image &image1, const Image &image2, Image *out)

int	DiffImages (const std::string &binary_name, const std::string &file1, const std::string &file2, const std::string &out_file, bool do_subtraction, bool reverse_byte_order)

int	main (int argc, const char *argv[])

Variables
constexpr int	kStatusSame = 0

constexpr int	kStatusDifferent = 1

constexpr int	kStatusError = 2

constexpr uint32_t	RGBA_RED = 0x000000ff

constexpr uint32_t	RGBA_ALPHA = 0xff000000

Function Documentation

◆ CalculateDifferencePercentage()

float CalculateDifferencePercentage	(	const Image &	actual,
		int	pixels_different )

Definition at line 119 of file image_diff.cpp.

References Image::h(), and Image::w().

Referenced by HistogramPercentageDifferent(), and PercentageDifferent().

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◆ ChannelDelta()

uint8_t ChannelDelta	(	uint8_t	baseline_channel,
		uint8_t	actual_channel )

Definition at line 159 of file image_diff.cpp.

Referenced by MaxPixelPerChannelDelta().

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◆ CompareImages()

int CompareImages	(	const std::string &	binary_name,
		const std::string &	file1,
		const std::string &	file2,
		bool	compare_histograms,
		bool	reverse_byte_order,
		uint8_t	max_pixel_per_channel_delta )

Definition at line 258 of file image_diff.cpp.

References Image::CreateFromFilename(), Image::CreateFromFilenameWithReverseByteOrder(), HistogramPercentageDifferent(), kStatusDifferent, kStatusError, kStatusSame, and PercentageDifferent().

Referenced by main().

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◆ CountImageSizeMismatchAsPixelDifference()

void CountImageSizeMismatchAsPixelDifference	(	const Image &	baseline,
		const Image &	actual,
		int *	pixels_different )

Definition at line 131 of file image_diff.cpp.

References Image::h(), and Image::w().

Referenced by HistogramPercentageDifferent(), and PercentageDifferent().

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◆ CreateImageDiff()

bool CreateImageDiff	(	const Image &	image1,
		const Image &	image2,
		Image *	out )

Definition at line 303 of file image_diff.cpp.

References Image::Image(), Image::h(), Image::operator=(), Image::pixel_at(), RGBA_ALPHA, RGBA_RED, Image::set_pixel_at(), and Image::w().

Referenced by DiffImages().

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◆ DiffImages()

int DiffImages	(	const std::string &	binary_name,
		const std::string &	file1,
		const std::string &	file2,
		const std::string &	out_file,
		bool	do_subtraction,
		bool	reverse_byte_order )