Image::DitherCodec Class Reference

Inheritance diagram for Image::DitherCodec:

Public Member Functions
	DitherCodec (Codec *codec, DisposeAfterUse::Flag disposeAfterUse=DisposeAfterUse::YES)
const Graphics::Surface *	decodeFrame (Common::SeekableReadStream &stream) override
Graphics::PixelFormat	getPixelFormat () const override
bool	setOutputPixelFormat (const Graphics::PixelFormat &format) override
bool	containsPalette () const override
const byte *	getPalette () override
bool	hasDirtyPalette () const override
bool	canDither (DitherType type) const override
void	setDither (DitherType type, const byte *palette) override
void	setCodecAccuracy (CodecAccuracy accuracy) override
void	setPalette (const byte *palette)

Static Public Member Functions
static byte *	createQuickTimeDitherTable (const byte *palette, uint colorCount)
Static Public Member Functions inherited from Image::Codec
static Graphics::PixelFormat	getDefaultYUVFormat ()

Additional Inherited Members
Public Types inherited from Image::Codec
enum	DitherType { kDitherTypeUnknown, kDitherTypeVFW, kDitherTypeQT }

Member Function Documentation

decodeFrame()

const Graphics::Surface* Image::DitherCodec::decodeFrame ( Common::SeekableReadStream &  stream )

overridevirtual

Decode the frame for the given data and return a pointer to a surface containing the decoded frame.

Returns

a pointer to the decoded frame

Implements Image::Codec.

getPixelFormat()

Graphics::PixelFormat Image::DitherCodec::getPixelFormat ( ) const

overridevirtual

Get the format that the surface returned from decodeImage() will be in.

Implements Image::Codec.

setOutputPixelFormat()

bool Image::DitherCodec::setOutputPixelFormat ( const Graphics::PixelFormat &  format )

overridevirtual

Select the preferred format to use, for codecs where this is faster than converting the image afterwards. Returns true if supported, and false otherwise.

Reimplemented from Image::Codec.

containsPalette()

bool Image::DitherCodec::containsPalette ( ) const

overridevirtual

Can this codec's frames contain a palette?

Reimplemented from Image::Codec.

getPalette()

const byte* Image::DitherCodec::getPalette ( )

overridevirtual

Get the palette last decoded from decodeImage

Reimplemented from Image::Codec.

hasDirtyPalette()

bool Image::DitherCodec::hasDirtyPalette ( ) const

overridevirtual

Does the codec have a dirty palette?

Reimplemented from Image::Codec.

canDither()

bool Image::DitherCodec::canDither ( DitherType  type ) const

overridevirtual

Can the codec dither down to 8bpp?

Reimplemented from Image::Codec.

setDither()

void Image::DitherCodec::setDither ( DitherType  type, const byte *  palette  )

overridevirtual

Activate dithering mode with a palette

Reimplemented from Image::Codec.

setCodecAccuracy()

void Image::DitherCodec::setCodecAccuracy ( CodecAccuracy  accuracy )

overridevirtual

Set the decoding accuracy of the codec, if supported

Reimplemented from Image::Codec.

setPalette()

void Image::DitherCodec::setPalette ( const byte *  palette )

inline

Specify the source palette when dithering from CLUT8 to CLUT8.

createQuickTimeDitherTable()

static byte* Image::DitherCodec::createQuickTimeDitherTable ( const byte *  palette, uint  colorCount  )

static

Create a dither table, as used by QuickTime codecs.

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The documentation for this class was generated from the following file:

• image/codecs/dither.h