libavcodec/rv34data.h File Reference

miscellaneous RV30/40 tables More...

#include <stdint.h>

Go to the source code of this file.

Variables

static const uint8_t rv34_count_ones [16]
 number of ones in nibble minus one
static const uint8_t rv34_cbp_code [16]
 values used to reconstruct coded block pattern
static const uint8_t modulo_three_table [108][4]
 precalculated results of division by three and modulo three for values 0-107
static const uint8_t rv34_chroma_quant [2][32]
 quantizer values used for AC and DC coefficients in chroma blocks
static const uint16_t rv34_qscale_tab [32]
 This table is used for dequantizing.
static const uint8_t rv34_dezigzag [16]
 4x4 dezigzag pattern
static const uint8_t rv34_quant_to_vlc_set [2][31]
 tables used to translate a quantizer value into a VLC set for decoding The first table is used for intraframes.
static const uint8_t rv34_dquant_tab [2][32]
 table for obtaining the quantizer difference
static const uint16_t rv34_mb_max_sizes [6] = { 0x2F, 0x62, 0x18B, 0x62F, 0x18BF, 0x23FF }
 maximum number of macroblocks for each of the possible slice offset sizes
static const uint8_t rv34_mb_bits_sizes [6] = { 6, 7, 9, 11, 13, 14 }
 bits needed to code the slice offset for the given size


Detailed Description

miscellaneous RV30/40 tables

Definition in file rv34data.h.


Variable Documentation

const uint8_t modulo_three_table[108][4] [static]

Initial value:

 {
 { 0, 0, 0, 0 }, { 0, 0, 0, 1 }, { 0, 0, 0, 2 }, { 0, 0, 1, 0 },
 { 0, 0, 1, 1 }, { 0, 0, 1, 2 }, { 0, 0, 2, 0 }, { 0, 0, 2, 1 },
 { 0, 0, 2, 2 }, { 0, 1, 0, 0 }, { 0, 1, 0, 1 }, { 0, 1, 0, 2 },
 { 0, 1, 1, 0 }, { 0, 1, 1, 1 }, { 0, 1, 1, 2 }, { 0, 1, 2, 0 },
 { 0, 1, 2, 1 }, { 0, 1, 2, 2 }, { 0, 2, 0, 0 }, { 0, 2, 0, 1 },
 { 0, 2, 0, 2 }, { 0, 2, 1, 0 }, { 0, 2, 1, 1 }, { 0, 2, 1, 2 },
 { 0, 2, 2, 0 }, { 0, 2, 2, 1 }, { 0, 2, 2, 2 }, { 1, 0, 0, 0 },
 { 1, 0, 0, 1 }, { 1, 0, 0, 2 }, { 1, 0, 1, 0 }, { 1, 0, 1, 1 },
 { 1, 0, 1, 2 }, { 1, 0, 2, 0 }, { 1, 0, 2, 1 }, { 1, 0, 2, 2 },
 { 1, 1, 0, 0 }, { 1, 1, 0, 1 }, { 1, 1, 0, 2 }, { 1, 1, 1, 0 },
 { 1, 1, 1, 1 }, { 1, 1, 1, 2 }, { 1, 1, 2, 0 }, { 1, 1, 2, 1 },
 { 1, 1, 2, 2 }, { 1, 2, 0, 0 }, { 1, 2, 0, 1 }, { 1, 2, 0, 2 },
 { 1, 2, 1, 0 }, { 1, 2, 1, 1 }, { 1, 2, 1, 2 }, { 1, 2, 2, 0 },
 { 1, 2, 2, 1 }, { 1, 2, 2, 2 }, { 2, 0, 0, 0 }, { 2, 0, 0, 1 },
 { 2, 0, 0, 2 }, { 2, 0, 1, 0 }, { 2, 0, 1, 1 }, { 2, 0, 1, 2 },
 { 2, 0, 2, 0 }, { 2, 0, 2, 1 }, { 2, 0, 2, 2 }, { 2, 1, 0, 0 },
 { 2, 1, 0, 1 }, { 2, 1, 0, 2 }, { 2, 1, 1, 0 }, { 2, 1, 1, 1 },
 { 2, 1, 1, 2 }, { 2, 1, 2, 0 }, { 2, 1, 2, 1 }, { 2, 1, 2, 2 },
 { 2, 2, 0, 0 }, { 2, 2, 0, 1 }, { 2, 2, 0, 2 }, { 2, 2, 1, 0 },
 { 2, 2, 1, 1 }, { 2, 2, 1, 2 }, { 2, 2, 2, 0 }, { 2, 2, 2, 1 },
 { 2, 2, 2, 2 }, { 3, 0, 0, 0 }, { 3, 0, 0, 1 }, { 3, 0, 0, 2 },
 { 3, 0, 1, 0 }, { 3, 0, 1, 1 }, { 3, 0, 1, 2 }, { 3, 0, 2, 0 },
 { 3, 0, 2, 1 }, { 3, 0, 2, 2 }, { 3, 1, 0, 0 }, { 3, 1, 0, 1 },
 { 3, 1, 0, 2 }, { 3, 1, 1, 0 }, { 3, 1, 1, 1 }, { 3, 1, 1, 2 },
 { 3, 1, 2, 0 }, { 3, 1, 2, 1 }, { 3, 1, 2, 2 }, { 3, 2, 0, 0 },
 { 3, 2, 0, 1 }, { 3, 2, 0, 2 }, { 3, 2, 1, 0 }, { 3, 2, 1, 1 },
 { 3, 2, 1, 2 }, { 3, 2, 2, 0 }, { 3, 2, 2, 1 }, { 3, 2, 2, 2 },
}
precalculated results of division by three and modulo three for values 0-107

A lot of four-tuples in RV40 are represented as c0*27+c1*9+c2*3+c3. This table allows conversion from a value back to a vector.

Definition at line 53 of file rv34data.h.

Referenced by decode_subblock(), and rv34_decode_cbp().

const uint8_t rv34_cbp_code[16] [static]

Initial value:

 {
    0x00, 0x20, 0x10, 0x30, 0x02, 0x22, 0x12, 0x32,
    0x01, 0x21, 0x11, 0x31, 0x03, 0x23, 0x13, 0x33
}
values used to reconstruct coded block pattern

Definition at line 42 of file rv34data.h.

Referenced by rv34_init_tables().

const uint8_t rv34_chroma_quant[2][32] [static]

Initial value:

 {
 {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
   16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 },
 {  0,  0,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13,
   14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 }
}
quantizer values used for AC and DC coefficients in chroma blocks

Definition at line 86 of file rv34data.h.

Referenced by rv34_decode_macroblock().

const uint8_t rv34_count_ones[16] [static]

Initial value:

 {
    0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 2, 3
}
number of ones in nibble minus one

Definition at line 35 of file rv34data.h.

Referenced by rv34_decode_cbp().

const uint8_t rv34_dezigzag[16] [static]

Initial value:

 {
  0,  1,  8, 16,
  9,  2,  3, 10,
 17, 24, 25, 18,
 11, 19, 26, 27
}
4x4 dezigzag pattern

Definition at line 106 of file rv34data.h.

Referenced by rv34_dequant4x4_16x16().

const uint8_t rv34_dquant_tab[2][32] [static]

Initial value:

{

{
    0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9,10,11,12,13,14,15,16,17,18,18,19,20,21,22,23,24,25,26,27,28
},{
    0, 2, 3, 4, 5, 6, 7, 8, 9,10,11,13,14,15,16,17,18,19,20,21,22,24,25,26,27,28,29,30,31,31,31,26
}
}
table for obtaining the quantizer difference

Todo:
Use with modified_quant_tab from h263data.h.

Definition at line 128 of file rv34data.h.

Referenced by rv34_decode_dquant().

const uint8_t rv34_mb_bits_sizes[6] = { 6, 7, 9, 11, 13, 14 } [static]

bits needed to code the slice offset for the given size

Todo:
This is the same as ff_mba_length, maybe use it instead.

Definition at line 146 of file rv34data.h.

Referenced by ff_rv34_get_start_offset().

const uint16_t rv34_mb_max_sizes[6] = { 0x2F, 0x62, 0x18B, 0x62F, 0x18BF, 0x23FF } [static]

maximum number of macroblocks for each of the possible slice offset sizes

Todo:
This is the same as ff_mba_max, maybe use it instead.

Definition at line 141 of file rv34data.h.

Referenced by ff_rv34_get_start_offset().

const uint16_t rv34_qscale_tab[32] [static]

Initial value:

 {
  60,   67,   76,   85,   96,  108,  121,  136,
 152,  171,  192,  216,  242,  272,  305,  341,
 383,  432,  481,  544,  606,  683,  767,  854,
 963, 1074, 1212, 1392, 1566, 1708, 1978, 2211
}
This table is used for dequantizing.

Definition at line 96 of file rv34data.h.

Referenced by rv34_decode_macroblock().

const uint8_t rv34_quant_to_vlc_set[2][31] [static]

Initial value:

 {
 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
   2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 },
 { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3,
   3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 },
}
tables used to translate a quantizer value into a VLC set for decoding The first table is used for intraframes.

Definition at line 117 of file rv34data.h.

Referenced by choose_vlc_set().


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