#include <xmvwmv2.h>

Inheritance diagram for Video::XMVWMV2Codec:

Collaboration diagram for Video::XMVWMV2Codec:

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Classes
struct	ACDecoder
	Decoders for DCT AC coefficients. More...

struct	BlockContext
	Context for decoding a block. More...

class	CBP
	Which block pattern are coded? More...

struct	DecodeContext
	Context for decoding a frame. More...

struct	MVDecoder
	Decoder for motion vectors. More...

Public Member Functions
	XMVWMV2Codec (uint32 width, uint32 height, Common::SeekableReadStream &extraData)

	~XMVWMV2Codec ()

void	decodeFrame (Graphics::Surface &surface, Common::SeekableReadStream &dataStream)

Public Member Functions inherited from Video::Codec
	Codec ()

virtual	~Codec ()

Private Member Functions
void	init ()
	Init the decoder. More...

void	parseExtraData (Common::SeekableReadStream &extraData)
	Parse the extra data containing video encoding properties. More...

void	initDecodeContext (DecodeContext &ctx)

void	decodeIFrame (DecodeContext &ctx)
	Decode an I-Frame (intra frame). More...

void	decodeJFrame (DecodeContext &ctx)
	Decode a J-Frame (intra X8 frame). More...

void	decodePFrame (DecodeContext &ctx)
	Decode a P-Frame (inter frame). More...

void	decodeIMacroBlock (DecodeContext &ctx)
	Decode an I-Frame (intra frame) macro block. More...

void	decodeIBlock (DecodeContext &ctx, BlockContext &block)
	Decode an I-Frame (intra frame) block. More...

void	IDCTPut (byte dest, int32 block, uint32 pitch)

void	IDCT (int32 *block)

void	IDCTRow (int32 *b)

void	IDCTCol (int32 *b)

Static Private Member Functions
static uint8	getTrit (Common::BitStream &bits)
	Decode a "tri-state". More...

Private Attributes
uint32	_width
	Width of a frame. More...

uint32	_height
	Height of a frame. More...

uint32	_lumaWidth
	Width of the luma portion of a decoded frame. More...

uint32	_lumaHeight
	Height of the luma portion of a decoded frame. More...

uint32	_chromaWidth
	Width of the chroma portion of a decoded frame. More...

uint32	_chromaHeight
	Height of the chroma portion of a decoded frame. More...

uint32	_mbCountWidth
	Width of a frame in macro blocks. More...

uint32	_mbCountHeight
	Height of a frame in macro blocks. More...

Common::ScopedArray< byte >	_curPlanes [3]
	The 3 color planes, YUV, current frame. More...

Common::ScopedArray< byte >	_oldPlanes [3]
	The 3 color planes, YUV, last frame. More...

bool	_hasMixedPelMC
	Does the video have mixed pel motion compensation? More...

bool	_hasLoopFilter
	Does the video use the loop filter? More...

bool	_hasVarSizeTrans
	Does the video have variable sized transforms? More...

bool	_hasJFrames
	Does the video have j-frames (IntraX8)? More...

bool	_hasHybridMV
	Does the video have hybrid motion vectors? More...

bool	_hasACPerMacroBlock
	Are the AC selected per macro block instead of per frame? More...

uint8	_sliceCount
	Number of slices per frame. More...

Common::ScopedArray< CBP >	_cbp
	Coded block pattern, previous row. More...

Common::ScopedPtr< Common::Huffman >	_huffCBP [4]
	Huffman codes for coded block pattern. More...

Common::ScopedPtr< Common::Huffman >	_huffDC [2][2]
	Huffman code for DCT DC coefficients, [luma/chroma][low/high motion]. More...

Common::ScopedArray< int32 >	_predAC [3]
	AC predictors, previous row. More...

ACDecoder	_decoderAC [2][3]
	Decoders for DCT AC coefficients [luma/chroma][low motion/high motion/MPEG4]. More...

MVDecoder	_decoderMV [2]
	Huffman code for the motion vectors [low/high motion]. More...

uint32	_currentFrame

Static Private Attributes
static const uint32	kMacroBlockSize = 16
	Size of a macro block. More...

static const uint32	kBlockSize = 8
	Size of a block. More...

Detailed Description

Definition at line 68 of file xmvwmv2.h.

Constructor & Destructor Documentation

◆ XMVWMV2Codec()

Video::XMVWMV2Codec::XMVWMV2Codec	(	uint32	width,
		uint32	height,
		Common::SeekableReadStream &	extraData
	)

Definition at line 228 of file xmvwmv2.cpp.

References init(), and parseExtraData().

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◆ ~XMVWMV2Codec()

Video::XMVWMV2Codec::~XMVWMV2Codec ( )

Definition at line 237 of file xmvwmv2.cpp.

Member Function Documentation

◆ decodeFrame()

void Video::XMVWMV2Codec::decodeFrame	(	Graphics::Surface &	surface,
		Common::SeekableReadStream &	dataStream
	)

virtual

Implements Video::Codec.

Definition at line 309 of file xmvwmv2.cpp.

References _chromaWidth, _curPlanes, _currentFrame, _hasJFrames, _lumaHeight, _lumaWidth, _oldPlanes, Video::XMVWMV2Codec::DecodeContext::bits, decodeIFrame(), decodeJFrame(), decodePFrame(), Common::ScopedPtrBase< T, Deallocator >::get(), Common::BitStream::getBit(), Common::BitStream::getBits(), Graphics::Surface::getData(), Graphics::Surface::getWidth(), initDecodeContext(), Graphics::YUVToRGBManager::kScaleITU, Video::XMVWMV2Codec::DecodeContext::setQScale(), Common::BitStream::skip(), and YUVToRGBMan.

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◆ decodeIBlock()

void Video::XMVWMV2Codec::decodeIBlock	(	DecodeContext &	ctx,
		BlockContext &	block
	)

private

Decode an I-Frame (intra frame) block.

Definition at line 507 of file xmvwmv2.cpp.

Referenced by decodeIMacroBlock().

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◆ decodeIFrame()

void Video::XMVWMV2Codec::decodeIFrame ( DecodeContext & ctx )

private

Decode an I-Frame (intra frame).

Definition at line 409 of file xmvwmv2.cpp.

Referenced by decodeFrame().

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◆ decodeIMacroBlock()

void Video::XMVWMV2Codec::decodeIMacroBlock ( DecodeContext & ctx )

private

Decode an I-Frame (intra frame) macro block.

Definition at line 487 of file xmvwmv2.cpp.

References Video::XMVWMV2Codec::BlockContext::acQuantLeft, Video::XMVWMV2Codec::BlockContext::acQuantTop, Video::XMVWMV2Codec::DecodeContext::block, Video::XMVWMV2Codec::DecodeContext::curCBP, Video::XMVWMV2Codec::BlockContext::dcTopLeft, decodeIBlock(), Video::XMVWMV2Codec::BlockContext::hasACCoeffs, and Video::XMVWMV2Codec::CBP::isSet().

Referenced by decodeIFrame().

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◆ decodeJFrame()

void Video::XMVWMV2Codec::decodeJFrame ( DecodeContext & ctx )

private

Decode a J-Frame (intra X8 frame).

Definition at line 471 of file xmvwmv2.cpp.

References _chromaHeight, _chromaWidth, _curPlanes, _currentFrame, _lumaHeight, _lumaWidth, _oldPlanes, and warning().

Referenced by decodeFrame().

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◆ decodePFrame()

void Video::XMVWMV2Codec::decodePFrame ( DecodeContext & ctx )

private

Decode a P-Frame (inter frame).

Definition at line 480 of file xmvwmv2.cpp.

References _chromaHeight, _chromaWidth, _curPlanes, _lumaHeight, _lumaWidth, and _oldPlanes.

Referenced by decodeFrame().

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◆ getTrit()

uint8 Video::XMVWMV2Codec::getTrit ( Common::BitStream & bits )

staticprivate

Decode a "tri-state".

Definition at line 805 of file xmvwmv2.cpp.

References Common::BitStream::getBit().

Referenced by decodeIFrame().

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◆ IDCT()

void Video::XMVWMV2Codec::IDCT ( int32 * block )

private

Definition at line 735 of file xmvwmv2.cpp.

References IDCTCol(), and IDCTRow().

Referenced by IDCTPut().

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◆ IDCTCol()

void Video::XMVWMV2Codec::IDCTCol ( int32 * b )

private

Definition at line 778 of file xmvwmv2.cpp.

References W0, W1, W2, W3, W5, W6, and W7.

Referenced by IDCT().

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◆ IDCTPut()

void Video::XMVWMV2Codec::IDCTPut	(	byte *	dest,
		int32 *	block,
		uint32	pitch
	)

private

Definition at line 727 of file xmvwmv2.cpp.

References CLIP(), and IDCT().

Referenced by decodeIBlock().

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◆ IDCTRow()

void Video::XMVWMV2Codec::IDCTRow ( int32 * b )

private

Definition at line 752 of file xmvwmv2.cpp.

References W0, W1, W2, W3, W5, W6, and W7.

Referenced by IDCT().

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◆ init()

void Video::XMVWMV2Codec::init ( )

private

Init the decoder.

Definition at line 240 of file xmvwmv2.cpp.

References _cbp, _chromaHeight, _chromaWidth, _curPlanes, _decoderAC, _decoderMV, _height, _huffCBP, _huffDC, _lumaHeight, _lumaWidth, _mbCountHeight, _mbCountWidth, _oldPlanes, _predAC, _width, Video::WMV2ACCoefficientTable::huffman, Video::WMV2MVTable::huffman, Video::XMVWMV2Codec::ACDecoder::huffman, Video::XMVWMV2Codec::MVDecoder::huffman, kMacroBlockSize, Video::XMVWMV2Codec::ACDecoder::parameters, Video::XMVWMV2Codec::MVDecoder::parameters, Common::ScopedPtrBase< T, Deallocator >::reset(), Video::wmv2AC, Video::wmv2HuffmanDC, Video::wmv2HuffmanIMB, Video::wmv2HuffmanPMB, and Video::wmv2MV.

Referenced by XMVWMV2Codec().

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◆ initDecodeContext()

void Video::XMVWMV2Codec::initDecodeContext ( DecodeContext & ctx )

private

Definition at line 380 of file xmvwmv2.cpp.

References _cbp, _chromaWidth, _curPlanes, _lumaWidth, _mbCountWidth, _oldPlanes, _predAC, Video::XMVWMV2Codec::DecodeContext::acQuantTop, Video::XMVWMV2Codec::DecodeContext::block, Video::XMVWMV2Codec::BlockContext::blockPitch, Video::XMVWMV2Codec::BlockContext::curPlane, Common::ScopedPtrBase< T, Deallocator >::get(), kBlockSize, kMacroBlockSize, Video::XMVWMV2Codec::BlockContext::planePitch, Video::XMVWMV2Codec::BlockContext::refPlane, and Video::XMVWMV2Codec::DecodeContext::rowCBP.

Referenced by decodeFrame().

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◆ parseExtraData()

void Video::XMVWMV2Codec::parseExtraData ( Common::SeekableReadStream & extraData )

private

Parse the extra data containing video encoding properties.

Definition at line 355 of file xmvwmv2.cpp.

References _hasACPerMacroBlock, _hasHybridMV, _hasJFrames, _hasLoopFilter, _hasMixedPelMC, _hasVarSizeTrans, _sliceCount, Common::ReadStream::readUint32LE(), Common::SeekableReadStream::size(), and warning().

Referenced by XMVWMV2Codec().

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Member Data Documentation

◆ _cbp

Common::ScopedArray<CBP> Video::XMVWMV2Codec::_cbp

private

Coded block pattern, previous row.

Definition at line 207 of file xmvwmv2.h.

Referenced by Video::XMVWMV2Codec::CBP::clear(), Video::XMVWMV2Codec::CBP::decode(), Video::XMVWMV2Codec::CBP::empty(), init(), initDecodeContext(), Video::XMVWMV2Codec::CBP::isSet(), and Video::XMVWMV2Codec::CBP::set().

◆ _chromaHeight

uint32 Video::XMVWMV2Codec::_chromaHeight

private

Height of the chroma portion of a decoded frame.

Definition at line 184 of file xmvwmv2.h.

Referenced by decodeJFrame(), decodePFrame(), and init().

◆ _chromaWidth

uint32 Video::XMVWMV2Codec::_chromaWidth

private

Width of the chroma portion of a decoded frame.

Definition at line 183 of file xmvwmv2.h.

Referenced by decodeFrame(), decodeJFrame(), decodePFrame(), init(), and initDecodeContext().

◆ _curPlanes

Common::ScopedArray<byte> Video::XMVWMV2Codec::_curPlanes[3]

private

The 3 color planes, YUV, current frame.

Definition at line 191 of file xmvwmv2.h.

Referenced by decodeFrame(), decodeJFrame(), decodePFrame(), init(), and initDecodeContext().

◆ _currentFrame

uint32 Video::XMVWMV2Codec::_currentFrame

private

Definition at line 227 of file xmvwmv2.h.

Referenced by decodeFrame(), and decodeJFrame().

◆ _decoderAC

ACDecoder Video::XMVWMV2Codec::_decoderAC[2][3]

private

Decoders for DCT AC coefficients [luma/chroma][low motion/high motion/MPEG4].

Definition at line 220 of file xmvwmv2.h.

Referenced by decodeIFrame(), and init().

◆ _decoderMV

MVDecoder Video::XMVWMV2Codec::_decoderMV[2]

private

Huffman code for the motion vectors [low/high motion].

Definition at line 225 of file xmvwmv2.h.

Referenced by init().

◆ _hasACPerMacroBlock

bool Video::XMVWMV2Codec::_hasACPerMacroBlock

private

Are the AC selected per macro block instead of per frame?

Definition at line 201 of file xmvwmv2.h.

Referenced by decodeIFrame(), and parseExtraData().

◆ _hasHybridMV

bool Video::XMVWMV2Codec::_hasHybridMV

private

Does the video have hybrid motion vectors?

Definition at line 200 of file xmvwmv2.h.

Referenced by parseExtraData().

◆ _hasJFrames

bool Video::XMVWMV2Codec::_hasJFrames

private

Does the video have j-frames (IntraX8)?

Definition at line 199 of file xmvwmv2.h.

Referenced by decodeFrame(), and parseExtraData().

◆ _hasLoopFilter

bool Video::XMVWMV2Codec::_hasLoopFilter

private

Does the video use the loop filter?

Definition at line 197 of file xmvwmv2.h.

Referenced by decodeIFrame(), and parseExtraData().

◆ _hasMixedPelMC

bool Video::XMVWMV2Codec::_hasMixedPelMC

private

Does the video have mixed pel motion compensation?

Definition at line 196 of file xmvwmv2.h.

Referenced by parseExtraData().

◆ _hasVarSizeTrans

bool Video::XMVWMV2Codec::_hasVarSizeTrans

private

Does the video have variable sized transforms?

Definition at line 198 of file xmvwmv2.h.

Referenced by parseExtraData().

◆ _height

uint32 Video::XMVWMV2Codec::_height

private

Height of a frame.

Definition at line 178 of file xmvwmv2.h.

Referenced by init().

◆ _huffCBP

Common::ScopedPtr<Common::Huffman> Video::XMVWMV2Codec::_huffCBP[4]

private

Huffman codes for coded block pattern.

Definition at line 208 of file xmvwmv2.h.

Referenced by decodeIFrame(), and init().

◆ _huffDC

Common::ScopedPtr<Common::Huffman> Video::XMVWMV2Codec::_huffDC[2][2]

private

Huffman code for DCT DC coefficients, [luma/chroma][low/high motion].

Definition at line 213 of file xmvwmv2.h.

Referenced by decodeIFrame(), and init().

◆ _lumaHeight

uint32 Video::XMVWMV2Codec::_lumaHeight

private

Height of the luma portion of a decoded frame.

Definition at line 181 of file xmvwmv2.h.

Referenced by decodeFrame(), decodeJFrame(), decodePFrame(), and init().

◆ _lumaWidth

uint32 Video::XMVWMV2Codec::_lumaWidth

private

Width of the luma portion of a decoded frame.

Definition at line 180 of file xmvwmv2.h.

Referenced by decodeFrame(), decodeJFrame(), decodePFrame(), init(), and initDecodeContext().

◆ _mbCountHeight

uint32 Video::XMVWMV2Codec::_mbCountHeight

private

Height of a frame in macro blocks.

Definition at line 187 of file xmvwmv2.h.

Referenced by decodeIFrame(), and init().

◆ _mbCountWidth

uint32 Video::XMVWMV2Codec::_mbCountWidth

private

Width of a frame in macro blocks.

Definition at line 186 of file xmvwmv2.h.

Referenced by decodeIFrame(), init(), and initDecodeContext().

◆ _oldPlanes

Common::ScopedArray<byte> Video::XMVWMV2Codec::_oldPlanes[3]

private

The 3 color planes, YUV, last frame.

Definition at line 192 of file xmvwmv2.h.

Referenced by decodeFrame(), decodeJFrame(), decodePFrame(), init(), and initDecodeContext().

◆ _predAC

Common::ScopedArray<int32> Video::XMVWMV2Codec::_predAC[3]

private

AC predictors, previous row.

Definition at line 217 of file xmvwmv2.h.

Referenced by init(), and initDecodeContext().

◆ _sliceCount

uint8 Video::XMVWMV2Codec::_sliceCount

private

Number of slices per frame.

Definition at line 203 of file xmvwmv2.h.

Referenced by parseExtraData().

◆ _width

uint32 Video::XMVWMV2Codec::_width

private

Width of a frame.

Definition at line 177 of file xmvwmv2.h.

Referenced by init().

◆ kBlockSize

const uint32 Video::XMVWMV2Codec::kBlockSize = 8

staticprivate

Size of a block.

Definition at line 77 of file xmvwmv2.h.

Referenced by decodeIBlock(), initDecodeContext(), and Video::XMVWMV2Codec::DecodeContext::startRow().

◆ kMacroBlockSize

const uint32 Video::XMVWMV2Codec::kMacroBlockSize = 16

staticprivate

Size of a macro block.

Definition at line 76 of file xmvwmv2.h.

Referenced by init(), and initDecodeContext().

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

src/video/codecs/xmvwmv2.h
src/video/codecs/xmvwmv2.cpp

Classes

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ XMVWMV2Codec()

◆ ~XMVWMV2Codec()

Member Function Documentation

◆ decodeFrame()

◆ decodeIBlock()

◆ decodeIFrame()

◆ decodeIMacroBlock()

◆ decodeJFrame()

◆ decodePFrame()

◆ getTrit()

◆ IDCT()

◆ IDCTCol()

◆ IDCTPut()

◆ IDCTRow()

◆ init()

◆ initDecodeContext()

◆ parseExtraData()

Member Data Documentation

◆ _cbp

◆ _chromaHeight

◆ _chromaWidth

◆ _curPlanes

◆ _currentFrame

◆ _decoderAC

◆ _decoderMV

◆ _hasACPerMacroBlock

◆ _hasHybridMV

◆ _hasJFrames

◆ _hasLoopFilter

◆ _hasMixedPelMC

◆ _hasVarSizeTrans

◆ _height

◆ _huffCBP

◆ _huffDC

◆ _lumaHeight

◆ _lumaWidth

◆ _mbCountHeight

◆ _mbCountWidth

◆ _oldPlanes

◆ _predAC

◆ _sliceCount

◆ _width

◆ kBlockSize

◆ kMacroBlockSize