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152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
/* DCT coefficients. Four tables, two for last = 0, two for last = 1.
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the sign bit must be added afterwards. */
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/* first part of coeffs for last = 0. Indexed by [run][level-1] */
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static const UINT8 coeff_tab0[2][12][2] =
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{
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/* run = 0 */
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{
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{0x02, 2}, {0x0f, 4}, {0x15, 6}, {0x17, 7},
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{0x1f, 8}, {0x25, 9}, {0x24, 9}, {0x21,10},
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{0x20,10}, {0x07,11}, {0x06,11}, {0x20,11}
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},
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/* run = 1 */
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{
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{0x06, 3}, {0x14, 6}, {0x1e, 8}, {0x0f,10},
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{0x21,11}, {0x50,12}, {0x00, 0}, {0x00, 0},
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{0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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}
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};
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/* rest of coeffs for last = 0. indexing by [run-2][level-1] */
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static const UINT8 coeff_tab1[25][4][2] =
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{
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/* run = 2 */
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{
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{0x0e, 4}, {0x1d, 8}, {0x0e,10}, {0x51,12}
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},
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/* run = 3 */
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{
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{0x0d, 5}, {0x23, 9}, {0x0d,10}, {0x00, 0}
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},
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/* run = 4-26 */
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{
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{0x0c, 5}, {0x22, 9}, {0x52,12}, {0x00, 0}
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},
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{
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{0x0b, 5}, {0x0c,10}, {0x53,12}, {0x00, 0}
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},
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{
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{0x13, 6}, {0x0b,10}, {0x54,12}, {0x00, 0}
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},
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{
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{0x12, 6}, {0x0a,10}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x11, 6}, {0x09,10}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x10, 6}, {0x08,10}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x16, 7}, {0x55,12}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x15, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x14, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1c, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1b, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x21, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x20, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1f, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1e, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1d, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1c, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1b, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x1a, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x22,11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x23,11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x56,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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},
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{
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{0x57,12}, {0x00, 0}, {0x00, 0}, {0x00, 0}
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}
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};
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/* first coeffs of last = 1. indexing by [run][level-1] */
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static const UINT8 coeff_tab2[2][3][2] =
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{
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/* run = 0 */
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{
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{0x07, 4}, {0x19, 9}, {0x05,11}
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},
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/* run = 1 */
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{
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{0x0f, 6}, {0x04,11}, {0x00, 0}
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}
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};
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/* rest of coeffs for last = 1. indexing by [run-2] */
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static const UINT8 coeff_tab3[40][2] =
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{
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{0x0e, 6}, {0x0d, 6}, {0x0c, 6},
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{0x13, 7}, {0x12, 7}, {0x11, 7}, {0x10, 7},
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{0x1a, 8}, {0x19, 8}, {0x18, 8}, {0x17, 8},
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{0x16, 8}, {0x15, 8}, {0x14, 8}, {0x13, 8},
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{0x18, 9}, {0x17, 9}, {0x16, 9}, {0x15, 9},
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{0x14, 9}, {0x13, 9}, {0x12, 9}, {0x11, 9},
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{0x07,10}, {0x06,10}, {0x05,10}, {0x04,10},
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{0x24,11}, {0x25,11}, {0x26,11}, {0x27,11},
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{0x58,12}, {0x59,12}, {0x5a,12}, {0x5b,12},
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{0x5c,12}, {0x5d,12}, {0x5e,12}, {0x5f,12},
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{0x00, 0}
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};
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/* intra MCBPC, mb_type = 3 */
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static UINT8 intra_MCBPC_code[4] = { 1, 1, 2, 3 };
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static UINT8 intra_MCBPC_bits[4] = { 1, 3, 3, 3 };
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/* inter MCBPC, mb_type = 0 then 3 */
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static UINT8 inter_MCBPC_code[8] = { 1, 3, 2, 5, 3, 4, 3, 3 };
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static UINT8 inter_MCBPC_bits[8] = { 1, 4, 4, 6, 5, 8, 8, 7 };
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static UINT8 cbpy_tab[16][2] =
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{
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{3,4}, {5,5}, {4,5}, {9,4}, {3,5}, {7,4}, {2,6}, {11,4},
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{2,5}, {3,6}, {5,4}, {10,4}, {4,4}, {8,4}, {6,4}, {3,2}
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};
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