Image::Indeo::IndeoDecoderBase Class Reference

Inheritance diagram for Image::Indeo::IndeoDecoderBase:

Public Member Functions
	IndeoDecoderBase (uint16 width, uint16 height, uint bitsPerPixel)
Public Member Functions inherited from Image::Codec
virtual const Graphics::Surface *	decodeFrame (Common::SeekableReadStream &stream)=0
virtual bool	containsPalette () const
virtual const byte *	getPalette ()
virtual bool	hasDirtyPalette () const
virtual bool	canDither (DitherType type) const
virtual void	setDither (DitherType type, const byte *palette)
virtual void	setCodecAccuracy (CodecAccuracy accuracy)

Protected Member Functions
Graphics::PixelFormat	getPixelFormat () const override
bool	setOutputPixelFormat (const Graphics::PixelFormat &format) override
virtual int	decodePictureHeader ()=0
virtual void	switchBuffers ()=0
virtual bool	isNonNullFrame () const =0
virtual int	decodeBandHeader (IVIBandDesc *band)=0
virtual int	decodeMbInfo (IVIBandDesc *band, IVITile *tile)=0
virtual int	decodeTransparency ()
int	decodeIndeoFrame ()
int	scaleMV (int mv, int mvScale)

Protected Attributes
IVI45DecContext	_ctx
uint16	_width
uint16	_height
uint	_bitsPerPixel
Graphics::PixelFormat	_pixelFormat
Graphics::Surface *	_surface

Static Protected Attributes
static const uint8	_ffIviVerticalScan8x8 [64]
static const uint8	_ffIviHorizontalScan8x8 [64]
static const uint8	_ffIviDirectScan4x4 [16]

Additional Inherited Members
Public Types inherited from Image::Codec
enum	DitherType { kDitherTypeUnknown, kDitherTypeVFW, kDitherTypeQT }
Static Public Member Functions inherited from Image::Codec
static byte *	createQuickTimeDitherTable (const byte *palette, uint colorCount)

Member Function Documentation

getPixelFormat()

Graphics::PixelFormat Image::Indeo::IndeoDecoderBase::getPixelFormat ( ) const

inlineoverrideprotectedvirtual

Returns the pixel format for the decoder's surface

Implements Image::Codec.

setOutputPixelFormat()

bool Image::Indeo::IndeoDecoderBase::setOutputPixelFormat ( const Graphics::PixelFormat &  format )

inlineoverrideprotectedvirtual

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.

decodePictureHeader()

virtual int Image::Indeo::IndeoDecoderBase::decodePictureHeader ( )

protectedpure virtual

Decode the Indeo picture header.

Returns

0 = Ok, negative number = error

Implemented in Image::Indeo4Decoder, and Image::Indeo5Decoder.

switchBuffers()

virtual void Image::Indeo::IndeoDecoderBase::switchBuffers ( )

protectedpure virtual

Rearrange decoding and reference buffers.

Implemented in Image::Indeo4Decoder, and Image::Indeo5Decoder.

decodeBandHeader()

virtual int Image::Indeo::IndeoDecoderBase::decodeBandHeader ( IVIBandDesc *  band )

protectedpure virtual

Decode Indeo band header.

Parameters

[in,out]

band

Pointer to the band descriptor

Returns

Result code: 0 = OK, negative number = error

Implemented in Image::Indeo4Decoder, and Image::Indeo5Decoder.

decodeMbInfo()

virtual int Image::Indeo::IndeoDecoderBase::decodeMbInfo ( IVIBandDesc *  band, IVITile *  tile  )

protectedpure virtual

Decode information (block type, _cbp, quant delta, motion vector) for all macroblocks in the current tile.

Parameters

[in,out]	band	Pointer to the band descriptor
[in,out]	tile	Pointer to the tile descriptor

Returns

Result code: 0 = OK, negative number = error

Implemented in Image::Indeo4Decoder, and Image::Indeo5Decoder.

decodeTransparency()

virtual int Image::Indeo::IndeoDecoderBase::decodeTransparency ( )

inlineprotectedvirtual

Decodes optional transparency data within Indeo frames

Reimplemented in Image::Indeo4Decoder.

decodeIndeoFrame()

int Image::Indeo::IndeoDecoderBase::decodeIndeoFrame ( )

protected

Decodes the Indeo frame from the bit reader already loaded into the context

scaleMV()

int Image::Indeo::IndeoDecoderBase::scaleMV ( int  mv, int  mvScale  )

protected

scale motion vector

Member Data Documentation

_ffIviVerticalScan8x8

const uint8 Image::Indeo::IndeoDecoderBase::_ffIviVerticalScan8x8[64]

staticprotected

Scan patterns shared between indeo4 and indeo5

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

• image/codecs/indeo/indeo.h