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Intel Indeo 5 decoder. More...

#include <indeo5.h>

Inheritance diagram for Image::Indeo5Decoder:
Collaboration diagram for Image::Indeo5Decoder:

List of all members.

Classes

struct  Transform

Public Member Functions

 Indeo5Decoder (uint16 width, uint16 height, uint bitsPerPixel=16)
virtual ~Indeo5Decoder ()
virtual const Graphics::SurfacedecodeFrame (Common::SeekableReadStream &stream)
 Decode the frame for the given data and return a pointer to a surface containing the decoded frame.

Static Public Member Functions

static bool isIndeo5 (Common::SeekableReadStream &stream)

Protected Member Functions

virtual int decodePictureHeader ()
 Decode the Indeo 5 picture header.
virtual void switchBuffers ()
 Rearrange decoding and reference buffers.
virtual bool isNonNullFrame () const
virtual int decodeBandHeader (IVIBandDesc *band)
 Decode Indeo 4 band header.
virtual int decodeMbInfo (IVIBandDesc *band, IVITile *tile)
 Decode information (block type, cbp, quant delta, motion vector) for all macroblocks in the current tile.

Private Member Functions

int decode_gop_header ()
 Decode Indeo5 GOP (Group of pictures) header.
int skip_hdr_extension ()
 Skip a header extension.

Static Private Attributes

static const uint8 _commonPicSizes [30]
 standard picture dimensions (width, height divided by 4)
static const uint16 _baseQuant8x8Inter [5][64]
 Indeo5 dequantization matrixes consist of two tables: base table and scale table.
static const uint16 _baseQuant8x8Intra [5][64]
static const uint16 _baseQuant4x4Inter [16]
static const uint16 _baseQuant4x4Intra [16]
static const uint8 _scaleQuant8x8Inter [5][24]
static const uint8 _scaleQuant8x8Intra [5][24]
static const uint8 _scaleQuant4x4Inter [24]
static const uint8 _scaleQuant4x4Intra [24]

Detailed Description

Intel Indeo 5 decoder.

Used by AVI.

Used in video:

  • AVIDecoder

Definition at line 48 of file indeo5.h.


Constructor & Destructor Documentation

Image::Indeo5Decoder::Indeo5Decoder ( uint16  width,
uint16  height,
uint  bitsPerPixel = 16 
)

Definition at line 51 of file indeo5.cpp.

virtual Image::Indeo5Decoder::~Indeo5Decoder (  )  [inline, virtual]

Definition at line 56 of file indeo5.h.


Member Function Documentation

int Image::Indeo5Decoder::decode_gop_header (  )  [private]

Decode Indeo5 GOP (Group of pictures) header.

This header is present in key frames only. It defines parameters for all frames in a GOP.

Returns:
result code: 0 = OK, -1 = error

Definition at line 387 of file indeo5.cpp.

int Image::Indeo5Decoder::decodeBandHeader ( IVIBandDesc band  )  [protected, virtual]

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.

Definition at line 203 of file indeo5.cpp.

const Graphics::Surface * Image::Indeo5Decoder::decodeFrame ( Common::SeekableReadStream stream  )  [virtual]

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.

Definition at line 76 of file indeo5.cpp.

int Image::Indeo5Decoder::decodeMbInfo ( IVIBandDesc band,
IVITile tile 
) [protected, 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

Implements Image::Indeo::IndeoDecoderBase.

Definition at line 261 of file indeo5.cpp.

int Image::Indeo5Decoder::decodePictureHeader (  )  [protected, virtual]

Decode the Indeo 5 picture header.

Returns:
0 = Ok, negative number = error

Implements Image::Indeo::IndeoDecoderBase.

Definition at line 103 of file indeo5.cpp.

bool Image::Indeo5Decoder::isIndeo5 ( Common::SeekableReadStream stream  )  [static]

Definition at line 59 of file indeo5.cpp.

bool Image::Indeo5Decoder::isNonNullFrame (  )  const [protected, virtual]

Implements Image::Indeo::IndeoDecoderBase.

Definition at line 199 of file indeo5.cpp.

int Image::Indeo5Decoder::skip_hdr_extension (  )  [private]

Skip a header extension.

Definition at line 613 of file indeo5.cpp.

void Image::Indeo5Decoder::switchBuffers (  )  [protected, virtual]

Rearrange decoding and reference buffers.

Implements Image::Indeo::IndeoDecoderBase.

Definition at line 160 of file indeo5.cpp.


Member Data Documentation

Initial value:
 {
    0x1e, 0x3e, 0x4a, 0x52, 0x3e, 0x4a, 0x52, 0x56, 0x4a, 0x52, 0x56, 0x5e, 0x52, 0x56, 0x5e, 0x66
}

Definition at line 124 of file indeo5.h.

Initial value:
 {
    0x1e, 0x3e, 0x4a, 0x52, 0x3e, 0x4a, 0x52, 0x5e, 0x4a, 0x52, 0x5e, 0x7a, 0x52, 0x5e, 0x7a, 0x92
}

Definition at line 125 of file indeo5.h.

Initial value:
 {
    {0x26, 0x3a, 0x3e, 0x46, 0x4a, 0x4e, 0x52, 0x5a, 0x3a, 0x3e, 0x42, 0x46, 0x4a, 0x4e, 0x56, 0x5e,
     0x3e, 0x42, 0x46, 0x48, 0x4c, 0x52, 0x5a, 0x62, 0x46, 0x46, 0x48, 0x4a, 0x4e, 0x56, 0x5e, 0x66,
     0x4a, 0x4a, 0x4c, 0x4e, 0x52, 0x5a, 0x62, 0x6a, 0x4e, 0x4e, 0x52, 0x56, 0x5a, 0x5e, 0x66, 0x6e,
     0x52, 0x56, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x72, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x6e, 0x72, 0x76,
    },
    {0x26, 0x3a, 0x3e, 0x46, 0x4a, 0x4e, 0x52, 0x5a, 0x3a, 0x3e, 0x42, 0x46, 0x4a, 0x4e, 0x56, 0x5e,
     0x3e, 0x42, 0x46, 0x48, 0x4c, 0x52, 0x5a, 0x62, 0x46, 0x46, 0x48, 0x4a, 0x4e, 0x56, 0x5e, 0x66,
     0x4a, 0x4a, 0x4c, 0x4e, 0x52, 0x5a, 0x62, 0x6a, 0x4e, 0x4e, 0x52, 0x56, 0x5a, 0x5e, 0x66, 0x6e,
     0x52, 0x56, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x72, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x6e, 0x72, 0x76,
    },
    {0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
    },
    {0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
     0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4,
     0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2,
     0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2,
    },
    {0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
    }
}

Indeo5 dequantization matrixes consist of two tables: base table and scale table.

The base table defines the dequantization matrix itself and the scale table tells how this matrix should be scaled for a particular quant level (0...24).

ivi5_base_quant_bbb_ttt - base tables for block size 'bbb' of type 'ttt' ivi5_scale_quant_bbb_ttt - scale tables for block size 'bbb' of type 'ttt'

Definition at line 121 of file indeo5.h.

Initial value:
 {
    {0x1a, 0x2e, 0x36, 0x42, 0x46, 0x4a, 0x4e, 0x5a, 0x2e, 0x32, 0x3e, 0x42, 0x46, 0x4e, 0x56, 0x6a,
     0x36, 0x3e, 0x3e, 0x44, 0x4a, 0x54, 0x66, 0x72, 0x42, 0x42, 0x44, 0x4a, 0x52, 0x62, 0x6c, 0x7a,
     0x46, 0x46, 0x4a, 0x52, 0x5e, 0x66, 0x72, 0x8e, 0x4a, 0x4e, 0x54, 0x62, 0x66, 0x6e, 0x86, 0xa6,
     0x4e, 0x56, 0x66, 0x6c, 0x72, 0x86, 0x9a, 0xca, 0x5a, 0x6a, 0x72, 0x7a, 0x8e, 0xa6, 0xca, 0xfe,
    },
    {0x26, 0x3a, 0x3e, 0x46, 0x4a, 0x4e, 0x52, 0x5a, 0x3a, 0x3e, 0x42, 0x46, 0x4a, 0x4e, 0x56, 0x5e,
     0x3e, 0x42, 0x46, 0x48, 0x4c, 0x52, 0x5a, 0x62, 0x46, 0x46, 0x48, 0x4a, 0x4e, 0x56, 0x5e, 0x66,
     0x4a, 0x4a, 0x4c, 0x4e, 0x52, 0x5a, 0x62, 0x6a, 0x4e, 0x4e, 0x52, 0x56, 0x5a, 0x5e, 0x66, 0x6e,
     0x52, 0x56, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x72, 0x5a, 0x5e, 0x62, 0x66, 0x6a, 0x6e, 0x72, 0x76,
    },
    {0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
     0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2, 0x4e, 0xaa, 0xf2, 0xd4, 0xde, 0xc2, 0xd6, 0xc2,
    },
    {0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0x4e, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
     0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4, 0xd4,
     0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xde, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2,
     0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2, 0xc2,
    },
    {0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
     0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e, 0x5e,
    }
}

Definition at line 122 of file indeo5.h.

Initial value:
 {
    160, 120, 80, 60, 40, 30, 176, 120, 88, 60, 88, 72, 44, 36, 60, 45, 160, 60,
    176,  60, 20, 15, 22, 18,   0,   0,  0,  0,  0,  0
}

standard picture dimensions (width, height divided by 4)

Definition at line 110 of file indeo5.h.

Initial value:
 {
    0x0b, 0x0d, 0x0d, 0x0e, 0x11, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
}

Definition at line 130 of file indeo5.h.

Initial value:
 {
    0x01, 0x0b, 0x0b, 0x0d, 0x0d, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x13, 0x14,
    0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20
}

Definition at line 131 of file indeo5.h.

Initial value:
 {
    {0x0b, 0x11, 0x13, 0x14, 0x15, 0x16, 0x18, 0x1a, 0x1b, 0x1d, 0x20, 0x22,
     0x23, 0x25, 0x28, 0x2a, 0x2e, 0x32, 0x35, 0x39, 0x3d, 0x41, 0x44, 0x4a,
    },
    {0x07, 0x14, 0x16, 0x18, 0x1b, 0x1e, 0x22, 0x25, 0x29, 0x2d, 0x31, 0x35,
     0x3a, 0x3f, 0x44, 0x4a, 0x50, 0x56, 0x5c, 0x63, 0x6a, 0x71, 0x78, 0x7e,
    },
    {0x15, 0x25, 0x28, 0x2d, 0x30, 0x34, 0x3a, 0x3d, 0x42, 0x48, 0x4c, 0x51,
     0x56, 0x5b, 0x60, 0x65, 0x6b, 0x70, 0x76, 0x7c, 0x82, 0x88, 0x8f, 0x97,
    },
    {0x13, 0x1f, 0x20, 0x22, 0x25, 0x28, 0x2b, 0x2d, 0x30, 0x33, 0x36, 0x39,
     0x3c, 0x3f, 0x42, 0x45, 0x48, 0x4b, 0x4e, 0x52, 0x56, 0x5a, 0x5e, 0x62,
    },
    {0x3c, 0x52, 0x58, 0x5d, 0x63, 0x68, 0x68, 0x6d, 0x73, 0x78, 0x7c, 0x80,
     0x84, 0x89, 0x8e, 0x93, 0x98, 0x9d, 0xa3, 0xa9, 0xad, 0xb1, 0xb5, 0xba,
    },
}

Definition at line 127 of file indeo5.h.

Initial value:
 {
    {0x0b, 0x0e, 0x10, 0x12, 0x14, 0x16, 0x17, 0x18, 0x1a, 0x1c, 0x1e, 0x20,
     0x22, 0x24, 0x27, 0x28, 0x2a, 0x2d, 0x2f, 0x31, 0x34, 0x37, 0x39, 0x3c,
    },
    {0x01, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1b, 0x1e, 0x22, 0x25, 0x28, 0x2c,
     0x30, 0x34, 0x38, 0x3d, 0x42, 0x47, 0x4c, 0x52, 0x58, 0x5e, 0x65, 0x6c,
    },
    {0x13, 0x22, 0x27, 0x2a, 0x2d, 0x33, 0x36, 0x3c, 0x41, 0x45, 0x49, 0x4e,
     0x53, 0x58, 0x5d, 0x63, 0x69, 0x6f, 0x75, 0x7c, 0x82, 0x88, 0x8e, 0x95,
    },
    {0x13, 0x1f, 0x21, 0x24, 0x27, 0x29, 0x2d, 0x2f, 0x34, 0x37, 0x3a, 0x3d,
     0x40, 0x44, 0x48, 0x4c, 0x4f, 0x52, 0x56, 0x5a, 0x5e, 0x62, 0x66, 0x6b,
    },
    {0x31, 0x42, 0x47, 0x47, 0x4d, 0x52, 0x58, 0x58, 0x5d, 0x63, 0x67, 0x6b,
     0x6f, 0x73, 0x78, 0x7c, 0x80, 0x84, 0x89, 0x8e, 0x93, 0x98, 0x9d, 0xa4,
    }
}

Definition at line 128 of file indeo5.h.


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


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