You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
229 lines
8.2 KiB
229 lines
8.2 KiB
4 years ago
|
// put blk
|
||
|
|
|
||
|
|
/* type definitions for variable length code table entries */
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
unsigned char code; /* right justified */
|
||
|
|
char len;
|
||
|
|
} VLCtable;
|
||
|
|
|
||
|
|
/* for codes longer than 8 bits (excluding leading zeroes) */
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
unsigned short code; /* right justified */
|
||
|
|
char len;
|
||
|
|
} sVLCtable;
|
||
|
|
|
||
|
|
|
||
|
|
/* Table B-2, B-3, B-4 variable length codes for macroblock_type
|
||
|
|
*
|
||
|
|
* indexed by [macroblock_type]
|
||
|
|
*/
|
||
|
|
|
||
|
|
const static VLCtable mbtypetab[3][32]=
|
||
|
|
{
|
||
|
|
/* I */
|
||
|
|
{
|
||
|
|
{0,0}, {1,1}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{0,0}, {1,2}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
|
||
|
|
},
|
||
|
|
/* P */
|
||
|
|
{
|
||
|
|
{0,0}, {3,5}, {1,2}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{1,3}, {0,0}, {1,1}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{0,0}, {1,6}, {1,5}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
|
||
|
|
{0,0}, {0,0}, {2,5}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
|
||
|
|
},
|
||
|
|
/* B */
|
||
|
|
{
|
||
|
|
{0,0}, {3,5}, {0,0}, {0,0}, {2,3}, {0,0}, {3,3}, {0,0},
|
||
|
|
{2,4}, {0,0}, {3,4}, {0,0}, {2,2}, {0,0}, {3,2}, {0,0},
|
||
|
|
{0,0}, {1,6}, {0,0}, {0,0}, {0,0}, {0,0}, {2,6}, {0,0},
|
||
|
|
{0,0}, {0,0}, {3,6}, {0,0}, {0,0}, {0,0}, {2,5}, {0,0}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Table B-5 ... B-8 variable length codes for macroblock_type in
|
||
|
|
* scalable sequences
|
||
|
|
*
|
||
|
|
* not implemented
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Table B-9, variable length codes for coded_block_pattern
|
||
|
|
*
|
||
|
|
* indexed by [coded_block_pattern]
|
||
|
|
*/
|
||
|
|
|
||
|
|
const static VLCtable cbptable[64]=
|
||
|
|
{
|
||
|
|
{0x01,9}, {0x0b,5}, {0x09,5}, {0x0d,6},
|
||
|
|
{0x0d,4}, {0x17,7}, {0x13,7}, {0x1f,8},
|
||
|
|
{0x0c,4}, {0x16,7}, {0x12,7}, {0x1e,8},
|
||
|
|
{0x13,5}, {0x1b,8}, {0x17,8}, {0x13,8},
|
||
|
|
{0x0b,4}, {0x15,7}, {0x11,7}, {0x1d,8},
|
||
|
|
{0x11,5}, {0x19,8}, {0x15,8}, {0x11,8},
|
||
|
|
{0x0f,6}, {0x0f,8}, {0x0d,8}, {0x03,9},
|
||
|
|
{0x0f,5}, {0x0b,8}, {0x07,8}, {0x07,9},
|
||
|
|
{0x0a,4}, {0x14,7}, {0x10,7}, {0x1c,8},
|
||
|
|
{0x0e,6}, {0x0e,8}, {0x0c,8}, {0x02,9},
|
||
|
|
{0x10,5}, {0x18,8}, {0x14,8}, {0x10,8},
|
||
|
|
{0x0e,5}, {0x0a,8}, {0x06,8}, {0x06,9},
|
||
|
|
{0x12,5}, {0x1a,8}, {0x16,8}, {0x12,8},
|
||
|
|
{0x0d,5}, {0x09,8}, {0x05,8}, {0x05,9},
|
||
|
|
{0x0c,5}, {0x08,8}, {0x04,8}, {0x04,9},
|
||
|
|
{0x07,3}, {0x0a,5}, {0x08,5}, {0x0c,6}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/* Table B-14, DCT coefficients table zero
|
||
|
|
*
|
||
|
|
* indexed by [run][level-1]
|
||
|
|
* split into two tables (dct_code_tab1, dct_code_tab2) to reduce size
|
||
|
|
* 'first DCT coefficient' condition and 'End of Block' are treated elsewhere
|
||
|
|
* codes do not include s (sign bit)
|
||
|
|
*/
|
||
|
|
|
||
|
|
const static VLCtable dct_code_tab1[2][40]=
|
||
|
|
{
|
||
|
|
/* run = 0, level = 1...40 */
|
||
|
|
{
|
||
|
|
{0x03, 2}, {0x04, 4}, {0x05, 5}, {0x06, 7},
|
||
|
|
{0x26, 8}, {0x21, 8}, {0x0a,10}, {0x1d,12},
|
||
|
|
{0x18,12}, {0x13,12}, {0x10,12}, {0x1a,13},
|
||
|
|
{0x19,13}, {0x18,13}, {0x17,13}, {0x1f,14},
|
||
|
|
{0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},
|
||
|
|
{0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},
|
||
|
|
{0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},
|
||
|
|
{0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},
|
||
|
|
{0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},
|
||
|
|
{0x13,15}, {0x12,15}, {0x11,15}, {0x10,15}
|
||
|
|
},
|
||
|
|
/* run = 1, level = 1...18 */
|
||
|
|
{
|
||
|
|
{0x03, 3}, {0x06, 6}, {0x25, 8}, {0x0c,10},
|
||
|
|
{0x1b,12}, {0x16,13}, {0x15,13}, {0x1f,15},
|
||
|
|
{0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},
|
||
|
|
{0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},
|
||
|
|
{0x11,16}, {0x10,16}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
const static VLCtable dct_code_tab2[30][5]=
|
||
|
|
{
|
||
|
|
/* run = 2...31, level = 1...5 */
|
||
|
|
{{0x05, 4}, {0x04, 7}, {0x0b,10}, {0x14,12}, {0x14,13}},
|
||
|
|
{{0x07, 5}, {0x24, 8}, {0x1c,12}, {0x13,13}, {0x00, 0}},
|
||
|
|
{{0x06, 5}, {0x0f,10}, {0x12,12}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x07, 6}, {0x09,10}, {0x12,13}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x05, 6}, {0x1e,12}, {0x14,16}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x04, 6}, {0x15,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x07, 7}, {0x11,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x05, 7}, {0x11,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x27, 8}, {0x10,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x23, 8}, {0x1a,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x22, 8}, {0x19,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x20, 8}, {0x18,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x0e,10}, {0x17,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x0d,10}, {0x16,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x08,10}, {0x15,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1a,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x19,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x17,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x16,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1e,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1d,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1c,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1b,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1e,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1d,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1c,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1b,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Table B-15, DCT coefficients table one
|
||
|
|
*
|
||
|
|
* indexed by [run][level-1]
|
||
|
|
* split into two tables (dct_code_tab1a, dct_code_tab2a) to reduce size
|
||
|
|
* 'End of Block' is treated elsewhere
|
||
|
|
* codes do not include s (sign bit)
|
||
|
|
*/
|
||
|
|
|
||
|
|
const static VLCtable dct_code_tab1a[2][40]=
|
||
|
|
{
|
||
|
|
/* run = 0, level = 1...40 */
|
||
|
|
{
|
||
|
|
{0x02, 2}, {0x06, 3}, {0x07, 4}, {0x1c, 5},
|
||
|
|
{0x1d, 5}, {0x05, 6}, {0x04, 6}, {0x7b, 7},
|
||
|
|
{0x7c, 7}, {0x23, 8}, {0x22, 8}, {0xfa, 8},
|
||
|
|
{0xfb, 8}, {0xfe, 8}, {0xff, 8}, {0x1f,14},
|
||
|
|
{0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},
|
||
|
|
{0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},
|
||
|
|
{0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},
|
||
|
|
{0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},
|
||
|
|
{0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},
|
||
|
|
{0x13,15}, {0x12,15}, {0x11,15}, {0x10,15}
|
||
|
|
},
|
||
|
|
/* run = 1, level = 1...18 */
|
||
|
|
{
|
||
|
|
{0x02, 3}, {0x06, 5}, {0x79, 7}, {0x27, 8},
|
||
|
|
{0x20, 8}, {0x16,13}, {0x15,13}, {0x1f,15},
|
||
|
|
{0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},
|
||
|
|
{0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},
|
||
|
|
{0x11,16}, {0x10,16}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0},
|
||
|
|
{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
const static VLCtable dct_code_tab2a[30][5]=
|
||
|
|
{
|
||
|
|
/* run = 2...31, level = 1...5 */
|
||
|
|
{{0x05, 5}, {0x07, 7}, {0xfc, 8}, {0x0c,10}, {0x14,13}},
|
||
|
|
{{0x07, 5}, {0x26, 8}, {0x1c,12}, {0x13,13}, {0x00, 0}},
|
||
|
|
{{0x06, 6}, {0xfd, 8}, {0x12,12}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x07, 6}, {0x04, 9}, {0x12,13}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x06, 7}, {0x1e,12}, {0x14,16}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x04, 7}, {0x15,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x05, 7}, {0x11,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x78, 7}, {0x11,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x7a, 7}, {0x10,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x21, 8}, {0x1a,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x25, 8}, {0x19,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x24, 8}, {0x18,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x05, 9}, {0x17,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x07, 9}, {0x16,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x0d,10}, {0x15,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1a,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x19,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x17,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x16,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1e,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1d,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1c,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1b,13}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1f,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1e,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1d,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1c,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}},
|
||
|
|
{{0x1b,16}, {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}}
|
||
|
|
};
|