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107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
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/* dc encoding for mpeg4 */
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static const UINT8 DCtab_lum[13][2] =
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{
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{3,3}, {3,2}, {2,2}, {2,3}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7},
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{1,8}, {1,9}, {1,10}, {1,11},
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};
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static const UINT8 DCtab_chrom[13][2] =
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{
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{3,2}, {2,2}, {1,2}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,8},
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{1,9}, {1,10}, {1,11}, {1,12},
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};
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const UINT16 intra_vlc[103][2] = {
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{ 0x2, 2 },
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{ 0x6, 3 },{ 0xf, 4 },{ 0xd, 5 },{ 0xc, 5 },
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{ 0x15, 6 },{ 0x13, 6 },{ 0x12, 6 },{ 0x17, 7 },
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{ 0x1f, 8 },{ 0x1e, 8 },{ 0x1d, 8 },{ 0x25, 9 },
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{ 0x24, 9 },{ 0x23, 9 },{ 0x21, 9 },{ 0x21, 10 },
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{ 0x20, 10 },{ 0xf, 10 },{ 0xe, 10 },{ 0x7, 11 },
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{ 0x6, 11 },{ 0x20, 11 },{ 0x21, 11 },{ 0x50, 12 },
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{ 0x51, 12 },{ 0x52, 12 },{ 0xe, 4 },{ 0x14, 6 },
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{ 0x16, 7 },{ 0x1c, 8 },{ 0x20, 9 },{ 0x1f, 9 },
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{ 0xd, 10 },{ 0x22, 11 },{ 0x53, 12 },{ 0x55, 12 },
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{ 0xb, 5 },{ 0x15, 7 },{ 0x1e, 9 },{ 0xc, 10 },
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{ 0x56, 12 },{ 0x11, 6 },{ 0x1b, 8 },{ 0x1d, 9 },
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{ 0xb, 10 },{ 0x10, 6 },{ 0x22, 9 },{ 0xa, 10 },
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{ 0xd, 6 },{ 0x1c, 9 },{ 0x8, 10 },{ 0x12, 7 },
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{ 0x1b, 9 },{ 0x54, 12 },{ 0x14, 7 },{ 0x1a, 9 },
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{ 0x57, 12 },{ 0x19, 8 },{ 0x9, 10 },{ 0x18, 8 },
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{ 0x23, 11 },{ 0x17, 8 },{ 0x19, 9 },{ 0x18, 9 },
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{ 0x7, 10 },{ 0x58, 12 },{ 0x7, 4 },{ 0xc, 6 },
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{ 0x16, 8 },{ 0x17, 9 },{ 0x6, 10 },{ 0x5, 11 },
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{ 0x4, 11 },{ 0x59, 12 },{ 0xf, 6 },{ 0x16, 9 },
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{ 0x5, 10 },{ 0xe, 6 },{ 0x4, 10 },{ 0x11, 7 },
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{ 0x24, 11 },{ 0x10, 7 },{ 0x25, 11 },{ 0x13, 7 },
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{ 0x5a, 12 },{ 0x15, 8 },{ 0x5b, 12 },{ 0x14, 8 },
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{ 0x13, 8 },{ 0x1a, 8 },{ 0x15, 9 },{ 0x14, 9 },
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{ 0x13, 9 },{ 0x12, 9 },{ 0x11, 9 },{ 0x26, 11 },
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{ 0x27, 11 },{ 0x5c, 12 },{ 0x5d, 12 },{ 0x5e, 12 },
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{ 0x5f, 12 },{ 0x3, 7 },
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};
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const INT8 intra_level[102] = {
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1, 2, 3, 4, 5, 6, 7, 8,
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9, 10, 11, 12, 13, 14, 15, 16,
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17, 18, 19, 20, 21, 22, 23, 24,
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25, 26, 27, 1, 2, 3, 4, 5,
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6, 7, 8, 9, 10, 1, 2, 3,
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4, 5, 1, 2, 3, 4, 1, 2,
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3, 1, 2, 3, 1, 2, 3, 1,
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2, 3, 1, 2, 1, 2, 1, 1,
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1, 1, 1, 1, 2, 3, 4, 5,
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6, 7, 8, 1, 2, 3, 1, 2,
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1, 2, 1, 2, 1, 2, 1, 2,
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1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1,
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};
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const INT8 intra_run[102] = {
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 2, 2, 2,
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2, 2, 3, 3, 3, 3, 4, 4,
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4, 5, 5, 5, 6, 6, 6, 7,
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7, 7, 8, 8, 9, 9, 10, 11,
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12, 13, 14, 0, 0, 0, 0, 0,
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0, 0, 0, 1, 1, 1, 2, 2,
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3, 3, 4, 4, 5, 5, 6, 6,
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7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20,
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};
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static RLTable rl_intra = {
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102,
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67,
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intra_vlc,
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intra_run,
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intra_level,
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};
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/* alternate scan orders used when doing AC prediction */
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UINT8 ff_alternate_horizontal_scan[64] = {
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0, 1, 2, 3, 8, 9, 16, 17,
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10, 11, 4, 5, 6, 7, 15, 14,
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13, 12, 19, 18, 24, 25, 32, 33,
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26, 27, 20, 21, 22, 23, 28, 29,
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30, 31, 34, 35, 40, 41, 48, 49,
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42, 43, 36, 37, 38, 39, 44, 45,
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46, 47, 50, 51, 56, 57, 58, 59,
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52, 53, 54, 55, 60, 61, 62, 63,
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};
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UINT8 ff_alternate_vertical_scan[64] = {
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0, 8, 16, 24, 1, 9, 2, 10,
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17, 25, 32, 40, 48, 56, 57, 49,
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41, 33, 26, 18, 3, 11, 4, 12,
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19, 27, 34, 42, 50, 58, 35, 43,
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51, 59, 20, 28, 5, 13, 6, 14,
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21, 29, 36, 44, 52, 60, 37, 45,
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53, 61, 22, 30, 7, 15, 23, 31,
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38, 46, 54, 62, 39, 47, 55, 63,
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};
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