Image::Indeo4Decoder Class Reference

#include <indeo4.h>

Inheritance diagram for Image::Indeo4Decoder:

Public Member Functions
	Indeo4Decoder (uint16 width, uint16 height, uint bitsPerPixel=16)
const Graphics::Surface *	decodeFrame (Common::SeekableReadStream &stream) override
Public Member Functions inherited from Image::Indeo::IndeoDecoderBase
	IndeoDecoderBase (uint16 width, uint16 height, uint bitsPerPixel)
Public Member Functions inherited from Image::Codec
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)

Static Public Member Functions
static bool	isIndeo4 (Common::SeekableReadStream &stream)
Static Public Member Functions inherited from Image::Codec
static byte *	createQuickTimeDitherTable (const byte *palette, uint colorCount)

Protected Member Functions
int	decodePictureHeader () override
void	switchBuffers () override
bool	isNonNullFrame () const override
int	decodeBandHeader (IVIBandDesc *band) override
int	decodeMbInfo (IVIBandDesc *band, IVITile *tile) override
int	decodeRLETransparency (VLC_TYPE(*table)[2])
int	decodeTransparency () override
Protected Member Functions inherited from Image::Indeo::IndeoDecoderBase
Graphics::PixelFormat	getPixelFormat () const override
bool	setOutputPixelFormat (const Graphics::PixelFormat &format) override
int	decodeIndeoFrame ()
int	scaleMV (int mv, int mvScale)

Additional Inherited Members
Public Types inherited from Image::Codec
enum	DitherType { kDitherTypeUnknown, kDitherTypeVFW, kDitherTypeQT }
Protected Attributes inherited from Image::Indeo::IndeoDecoderBase
IVI45DecContext	_ctx
uint16	_width
uint16	_height
uint	_bitsPerPixel
Graphics::PixelFormat	_pixelFormat
Graphics::Surface *	_surface
Static Protected Attributes inherited from Image::Indeo::IndeoDecoderBase
static const uint8	_ffIviVerticalScan8x8 [64]
static const uint8	_ffIviHorizontalScan8x8 [64]
static const uint8	_ffIviDirectScan4x4 [16]

Detailed Description

Intel Indeo 4 decoder.

Used by AVI.

Used in video:

• AVIDecoder

Member Function Documentation

decodeFrame()

const Graphics::Surface* Image::Indeo4Decoder::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.

decodePictureHeader()

int Image::Indeo4Decoder::decodePictureHeader ( )

overrideprotectedvirtual

Decode the Indeo 4 picture header.

Returns

0 = Ok, negative number = error

Implements Image::Indeo::IndeoDecoderBase.

switchBuffers()

void Image::Indeo4Decoder::switchBuffers ( )

overrideprotectedvirtual

Rearrange decoding and reference buffers.

Implements Image::Indeo::IndeoDecoderBase.

decodeBandHeader()

int Image::Indeo4Decoder::decodeBandHeader ( IVIBandDesc *  band )

overrideprotectedvirtual

Decode Indeo 4 band header.

Parameters

[in,out]

band

pointer to the band descriptor

Returns

result code: 0 = OK, negative number = error

Implements Image::Indeo::IndeoDecoderBase.

decodeMbInfo()

int Image::Indeo4Decoder::decodeMbInfo ( IVIBandDesc *  band, IVITile *  tile  )

overrideprotectedvirtual

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

Implements Image::Indeo::IndeoDecoderBase.

decodeRLETransparency()

int Image::Indeo4Decoder::decodeRLETransparency ( VLC_TYPE(*)  table[2] )

protected

Decodes huffman + RLE-coded transparency data within Indeo4 frames

decodeTransparency()

int Image::Indeo4Decoder::decodeTransparency ( )

overrideprotectedvirtual

Decodes optional transparency data within Indeo4 frames

Reimplemented from Image::Indeo::IndeoDecoderBase.

---

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

• image/codecs/indeo4.h