png.cpp File Reference

#include "png.h"
#include <string>
#include <optional>
#include <sstream>
#include <zlib.h>
#include <cassert>
#include "util/serialize.h"
#include "serialization.h"
#include "irrlichttypes.h"

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Enumerations
enum	{ COLOR_GRAY = 0 , COLOR_RGB = 2 , COLOR_RGBA = 6 }

Functions
static void	writeChunk (std::string &target, const std::string &chunk_str)
static std::optional< u8 >	reduceColor (const u8 *data, u32 width, u32 height, std::string &new_data)
std::string	encodePNG (const u8 *data, u32 width, u32 height, s32 compression)

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
COLOR_GRAY
COLOR_RGB
COLOR_RGBA

Function Documentation

encodePNG()

std::string encodePNG	(	const u8 *	data,
		u32	width,
		u32	height,
		s32	compression
	)

References COLOR_GRAY, COLOR_RGB, COLOR_RGBA, compressZlib(), reduceColor(), writeChunk(), writeU32(), and writeU8().

Referenced by ModApiUtil::l_encode_png().

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reduceColor()

static std::optional< u8 > reduceColor ( const u8 *  data, u32  width, u32  height, std::string &  new_data  )

static

References COLOR_GRAY, and COLOR_RGB.

Referenced by encodePNG().

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writeChunk()

static void writeChunk ( std::string &  target, const std::string &  chunk_str  )

static

References U32_MAX, and writeU32().

Referenced by encodePNG().

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