PNG decoder

Description

Decoder for PNG images.

This decoder has a dependency on the libpng library.

Used in engines:

• Sword25
• TwinE
• Wintermute

Classes
class	Image::PNGDecoder

Functions
bool	Image::writePNG (Common::WriteStream &out, const Graphics::Surface &input, const byte *palette=nullptr, uint paletteCount=256)
bool	Image::writePNG (Common::WriteStream &out, const Graphics::Surface &input, const Graphics::Palette &palette)

Function Documentation

writePNG() [1/2]

bool Image::writePNG	(	Common::WriteStream &	out,
		const Graphics::Surface &	input,
		const byte *	palette = nullptr,
		uint	paletteCount = 256
	)

Outputs a compressed PNG stream of the given input surface.

Parameters

out	Stream to which to write the PNG image.
input	The surface to save as a PNG image..
palette	The palette (in RGB888), if the source format has a bpp of 1.
paletteCount	Number of colors in the palette (default: 256).

writePNG() [2/2]

bool Image::writePNG	(	Common::WriteStream &	out,
		const Graphics::Surface &	input,
		const Graphics::Palette &	palette
	)

Outputs a compressed PNG stream of the given input surface.

Parameters

out	Stream to which to write the PNG image.
input	The surface to save as a PNG image..
palette	The palette if the source format has a bpp of 1.