miscellaneous RV30/40 tables 

##  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]  
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_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 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_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 modulo_three_table[108]  
---  
static  
  
**Initial value:**

= {

0x00, 0x01, 0x02, 0x04, 0x05, 0x06, 0x08, 0x09, 0x0A,

0x10, 0x11, 0x12, 0x14, 0x15, 0x16, 0x18, 0x19, 0x1A,

0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x28, 0x29, 0x2A,

0x40, 0x41, 0x42, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A,

0x50, 0x51, 0x52, 0x54, 0x55, 0x56, 0x58, 0x59, 0x5A,

0x60, 0x61, 0x62, 0x64, 0x65, 0x66, 0x68, 0x69, 0x6A,

0x80, 0x81, 0x82, 0x84, 0x85, 0x86, 0x88, 0x89, 0x8A,

0x90, 0x91, 0x92, 0x94, 0x95, 0x96, 0x98, 0x99, 0x9A,

0xA0, 0xA1, 0xA2, 0xA4, 0xA5, 0xA6, 0xA8, 0xA9, 0xAA,

0xC0, 0xC1, 0xC2, 0xC4, 0xC5, 0xC6, 0xC8, 0xC9, 0xCA,

0xD0, 0xD1, 0xD2, 0xD4, 0xD5, 0xD6, 0xD8, 0xD9, 0xDA,

0xE0, 0xE1, 0xE2, 0xE4, 0xE5, 0xE6, 0xE8, 0xE9, 0xEA,

}

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(), decode_subblock1(), decode_subblock3(), rv34_decode_block(), and rv34_decode_cbp().

| 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 74 of file rv34data.h.

Referenced by rv34_decode_inter_macroblock(), rv34_output_i16x16(), and rv34_output_intra().

| 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 84 of file rv34data.h.

Referenced by rv34_decode_inter_macroblock(), rv34_output_i16x16(), and rv34_output_intra().

| 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 95 of file rv34data.h.

Referenced by choose_vlc_set().

| 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 ff_modified_quant_tab from h263data.h. 

Definition at line 106 of file rv34data.h.

| 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 119 of file rv34data.h.

Referenced by ff_rv34_get_start_offset().

| 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 124 of file rv34data.h.

Referenced by ff_rv34_get_start_offset()