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291 lines
10 KiB
291 lines
10 KiB
/* |
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* MMX optimized forward DCT |
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* The gcc porting is Copyright (c) 2001 Fabrice Bellard. |
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* |
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* from fdctam32.c - AP922 MMX(3D-Now) forward-DCT |
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* |
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* Intel Application Note AP-922 - fast, precise implementation of DCT |
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* http://developer.intel.com/vtune/cbts/appnotes.htm |
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*/ |
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#include "../common.h" |
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#include "mmx.h" |
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#define ATTR_ALIGN(align) __attribute__ ((__aligned__ (align))) |
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////////////////////////////////////////////////////////////////////// |
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// |
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// constants for the forward DCT |
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// ----------------------------- |
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// |
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// Be sure to check that your compiler is aligning all constants to QWORD |
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// (8-byte) memory boundaries! Otherwise the unaligned memory access will |
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// severely stall MMX execution. |
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// |
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////////////////////////////////////////////////////////////////////// |
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#define BITS_FRW_ACC 3 //; 2 or 3 for accuracy |
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#define SHIFT_FRW_COL BITS_FRW_ACC |
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#define SHIFT_FRW_ROW (BITS_FRW_ACC + 17 - 3) |
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//#define RND_FRW_ROW (262144 * (BITS_FRW_ACC - 1)) //; 1 << (SHIFT_FRW_ROW-1) |
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#define RND_FRW_ROW (1 << (SHIFT_FRW_ROW-1)) |
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//#define RND_FRW_COL (2 * (BITS_FRW_ACC - 1)) //; 1 << (SHIFT_FRW_COL-1) |
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#define RND_FRW_COL (1 << (SHIFT_FRW_COL-1)) |
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//concatenated table, for forward DCT transformation |
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static const int16_t fdct_tg_all_16[] ATTR_ALIGN(8) = { |
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13036, 13036, 13036, 13036, // tg * (2<<16) + 0.5 |
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27146, 27146, 27146, 27146, // tg * (2<<16) + 0.5 |
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-21746, -21746, -21746, -21746, // tg * (2<<16) + 0.5 |
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}; |
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static const int16_t cos_4_16[4] ATTR_ALIGN(8) = { |
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-19195, -19195, -19195, -19195, //cos * (2<<16) + 0.5 |
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}; |
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static const int16_t ocos_4_16[4] ATTR_ALIGN(8) = { |
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23170, 23170, 23170, 23170, //cos * (2<<15) + 0.5 |
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}; |
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static const long long fdct_one_corr ATTR_ALIGN(8) = 0x0001000100010001LL; |
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static const long fdct_r_row[2] ATTR_ALIGN(8) = {RND_FRW_ROW, RND_FRW_ROW }; |
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static const int16_t tab_frw_01234567[] ATTR_ALIGN(8) = { // forward_dct coeff table |
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//row0 |
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16384, 16384, 21407, -8867, // w09 w01 w08 w00 |
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16384, 16384, 8867, -21407, // w13 w05 w12 w04 |
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16384, -16384, 8867, 21407, // w11 w03 w10 w02 |
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-16384, 16384, -21407, -8867, // w15 w07 w14 w06 |
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22725, 12873, 19266, -22725, // w22 w20 w18 w16 |
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19266, 4520, -4520, -12873, // w23 w21 w19 w17 |
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12873, 4520, 4520, 19266, // w30 w28 w26 w24 |
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-22725, 19266, -12873, -22725, // w31 w29 w27 w25 |
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//row1 |
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22725, 22725, 29692, -12299, // w09 w01 w08 w00 |
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22725, 22725, 12299, -29692, // w13 w05 w12 w04 |
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22725, -22725, 12299, 29692, // w11 w03 w10 w02 |
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-22725, 22725, -29692, -12299, // w15 w07 w14 w06 |
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31521, 17855, 26722, -31521, // w22 w20 w18 w16 |
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26722, 6270, -6270, -17855, // w23 w21 w19 w17 |
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17855, 6270, 6270, 26722, // w30 w28 w26 w24 |
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-31521, 26722, -17855, -31521, // w31 w29 w27 w25 |
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//row2 |
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21407, 21407, 27969, -11585, // w09 w01 w08 w00 |
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21407, 21407, 11585, -27969, // w13 w05 w12 w04 |
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21407, -21407, 11585, 27969, // w11 w03 w10 w02 |
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-21407, 21407, -27969, -11585, // w15 w07 w14 w06 |
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29692, 16819, 25172, -29692, // w22 w20 w18 w16 |
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25172, 5906, -5906, -16819, // w23 w21 w19 w17 |
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16819, 5906, 5906, 25172, // w30 w28 w26 w24 |
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-29692, 25172, -16819, -29692, // w31 w29 w27 w25 |
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//row3 |
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19266, 19266, 25172, -10426, // w09 w01 w08 w00 |
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19266, 19266, 10426, -25172, // w13 w05 w12 w04 |
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19266, -19266, 10426, 25172, // w11 w03 w10 w02 |
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-19266, 19266, -25172, -10426, // w15 w07 w14 w06, |
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26722, 15137, 22654, -26722, // w22 w20 w18 w16 |
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22654, 5315, -5315, -15137, // w23 w21 w19 w17 |
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15137, 5315, 5315, 22654, // w30 w28 w26 w24 |
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-26722, 22654, -15137, -26722, // w31 w29 w27 w25, |
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//row4 |
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16384, 16384, 21407, -8867, // w09 w01 w08 w00 |
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16384, 16384, 8867, -21407, // w13 w05 w12 w04 |
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16384, -16384, 8867, 21407, // w11 w03 w10 w02 |
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-16384, 16384, -21407, -8867, // w15 w07 w14 w06 |
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22725, 12873, 19266, -22725, // w22 w20 w18 w16 |
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19266, 4520, -4520, -12873, // w23 w21 w19 w17 |
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12873, 4520, 4520, 19266, // w30 w28 w26 w24 |
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-22725, 19266, -12873, -22725, // w31 w29 w27 w25 |
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//row5 |
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19266, 19266, 25172, -10426, // w09 w01 w08 w00 |
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19266, 19266, 10426, -25172, // w13 w05 w12 w04 |
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19266, -19266, 10426, 25172, // w11 w03 w10 w02 |
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-19266, 19266, -25172, -10426, // w15 w07 w14 w06 |
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26722, 15137, 22654, -26722, // w22 w20 w18 w16 |
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22654, 5315, -5315, -15137, // w23 w21 w19 w17 |
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15137, 5315, 5315, 22654, // w30 w28 w26 w24 |
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-26722, 22654, -15137, -26722, // w31 w29 w27 w25 |
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//row6 |
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21407, 21407, 27969, -11585, // w09 w01 w08 w00 |
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21407, 21407, 11585, -27969, // w13 w05 w12 w04 |
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21407, -21407, 11585, 27969, // w11 w03 w10 w02 |
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-21407, 21407, -27969, -11585, // w15 w07 w14 w06, |
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29692, 16819, 25172, -29692, // w22 w20 w18 w16 |
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25172, 5906, -5906, -16819, // w23 w21 w19 w17 |
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16819, 5906, 5906, 25172, // w30 w28 w26 w24 |
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-29692, 25172, -16819, -29692, // w31 w29 w27 w25, |
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//row7 |
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22725, 22725, 29692, -12299, // w09 w01 w08 w00 |
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22725, 22725, 12299, -29692, // w13 w05 w12 w04 |
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22725, -22725, 12299, 29692, // w11 w03 w10 w02 |
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-22725, 22725, -29692, -12299, // w15 w07 w14 w06, |
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31521, 17855, 26722, -31521, // w22 w20 w18 w16 |
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26722, 6270, -6270, -17855, // w23 w21 w19 w17 |
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17855, 6270, 6270, 26722, // w30 w28 w26 w24 |
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-31521, 26722, -17855, -31521 // w31 w29 w27 w25 |
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}; |
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static inline void fdct_col(const int16_t *in, int16_t *out, int offset) |
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{ |
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movq_m2r(*(in + offset + 1 * 8), mm0); |
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movq_m2r(*(in + offset + 6 * 8), mm1); |
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movq_r2r(mm0, mm2); |
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movq_m2r(*(in + offset + 2 * 8), mm3); |
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paddsw_r2r(mm1, mm0); |
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movq_m2r(*(in + offset + 5 * 8), mm4); |
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psllw_i2r(SHIFT_FRW_COL, mm0); |
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movq_m2r(*(in + offset + 0 * 8), mm5); |
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paddsw_r2r(mm3, mm4); |
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paddsw_m2r(*(in + offset + 7 * 8), mm5); |
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psllw_i2r(SHIFT_FRW_COL, mm4); |
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movq_r2r(mm0, mm6); |
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psubsw_r2r(mm1, mm2); |
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movq_m2r(*(fdct_tg_all_16 + 4), mm1); |
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psubsw_r2r(mm4, mm0); |
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movq_m2r(*(in + offset + 3 * 8), mm7); |
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pmulhw_r2r(mm0, mm1); |
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paddsw_m2r(*(in + offset + 4 * 8), mm7); |
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psllw_i2r(SHIFT_FRW_COL, mm5); |
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paddsw_r2r(mm4, mm6); |
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psllw_i2r(SHIFT_FRW_COL, mm7); |
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movq_r2r(mm5, mm4); |
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psubsw_r2r(mm7, mm5); |
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paddsw_r2r(mm5, mm1); |
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paddsw_r2r(mm7, mm4); |
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por_m2r(fdct_one_corr, mm1); |
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psllw_i2r(SHIFT_FRW_COL + 1, mm2); |
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pmulhw_m2r(*(fdct_tg_all_16 + 4), mm5); |
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movq_r2r(mm4, mm7); |
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psubsw_m2r(*(in + offset + 5 * 8), mm3); |
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psubsw_r2r(mm6, mm4); |
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movq_r2m(mm1, *(out + offset + 2 * 8)); |
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paddsw_r2r(mm6, mm7); |
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movq_m2r(*(in + offset + 3 * 8), mm1); |
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psllw_i2r(SHIFT_FRW_COL + 1, mm3); |
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psubsw_m2r(*(in + offset + 4 * 8), mm1); |
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movq_r2r(mm2, mm6); |
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movq_r2m(mm4, *(out + offset + 4 * 8)); |
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paddsw_r2r(mm3, mm2); |
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pmulhw_m2r(*ocos_4_16, mm2); |
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psubsw_r2r(mm3, mm6); |
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pmulhw_m2r(*ocos_4_16, mm6); |
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psubsw_r2r(mm0, mm5); |
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por_m2r(fdct_one_corr, mm5); |
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psllw_i2r(SHIFT_FRW_COL, mm1); |
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por_m2r(fdct_one_corr, mm2); |
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movq_r2r(mm1, mm4); |
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movq_m2r(*(in + offset + 0 * 8), mm3); |
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paddsw_r2r(mm6, mm1); |
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psubsw_m2r(*(in + offset + 7 * 8), mm3); |
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psubsw_r2r(mm6, mm4); |
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movq_m2r(*(fdct_tg_all_16 + 0), mm0); |
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psllw_i2r(SHIFT_FRW_COL, mm3); |
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movq_m2r(*(fdct_tg_all_16 + 8), mm6); |
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pmulhw_r2r(mm1, mm0); |
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movq_r2m(mm7, *(out + offset + 0 * 8)); |
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pmulhw_r2r(mm4, mm6); |
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movq_r2m(mm5, *(out + offset + 6 * 8)); |
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movq_r2r(mm3, mm7); |
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movq_m2r(*(fdct_tg_all_16 + 8), mm5); |
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psubsw_r2r(mm2, mm7); |
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paddsw_r2r(mm2, mm3); |
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pmulhw_r2r(mm7, mm5); |
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paddsw_r2r(mm3, mm0); |
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paddsw_r2r(mm4, mm6); |
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pmulhw_m2r(*(fdct_tg_all_16 + 0), mm3); |
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por_m2r(fdct_one_corr, mm0); |
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paddsw_r2r(mm7, mm5); |
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psubsw_r2r(mm6, mm7); |
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movq_r2m(mm0, *(out + offset + 1 * 8)); |
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paddsw_r2r(mm4, mm5); |
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movq_r2m(mm7, *(out + offset + 3 * 8)); |
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psubsw_r2r(mm1, mm3); |
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movq_r2m(mm5, *(out + offset + 5 * 8)); |
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movq_r2m(mm3, *(out + offset + 7 * 8)); |
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} |
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static inline void fdct_row(const int16_t *in, int16_t *out, const int16_t *table) |
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{ |
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movd_m2r(*(in + 6), mm5); |
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punpcklwd_m2r(*(in + 4), mm5); |
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movq_r2r(mm5, mm2); |
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psrlq_i2r(0x20, mm5); |
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movq_m2r(*(in + 0), mm0); |
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punpcklwd_r2r(mm2, mm5); |
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movq_r2r(mm0, mm1); |
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paddsw_r2r(mm5, mm0); |
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psubsw_r2r(mm5, mm1); |
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movq_r2r(mm0, mm2); |
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punpcklwd_r2r(mm1, mm0); |
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punpckhwd_r2r(mm1, mm2); |
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movq_r2r(mm2, mm1); |
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movq_r2r(mm0, mm2); |
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movq_m2r(*(table + 0), mm3); |
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punpcklwd_r2r(mm1, mm0); |
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movq_r2r(mm0, mm5); |
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punpckldq_r2r(mm0, mm0); |
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movq_m2r(*(table + 4), mm4); |
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punpckhwd_r2r(mm1, mm2); |
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pmaddwd_r2r(mm0, mm3); |
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movq_r2r(mm2, mm6); |
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movq_m2r(*(table + 16), mm1); |
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punpckldq_r2r(mm2, mm2); |
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pmaddwd_r2r(mm2, mm4); |
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punpckhdq_r2r(mm5, mm5); |
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pmaddwd_m2r(*(table + 8), mm0); |
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punpckhdq_r2r(mm6, mm6); |
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movq_m2r(*(table + 20), mm7); |
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pmaddwd_r2r(mm5, mm1); |
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paddd_m2r(*fdct_r_row, mm3); |
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pmaddwd_r2r(mm6, mm7); |
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pmaddwd_m2r(*(table + 12), mm2); |
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paddd_r2r(mm4, mm3); |
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pmaddwd_m2r(*(table + 24), mm5); |
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pmaddwd_m2r(*(table + 28), mm6); |
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paddd_r2r(mm7, mm1); |
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paddd_m2r(*fdct_r_row, mm0); |
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psrad_i2r(SHIFT_FRW_ROW, mm3); |
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paddd_m2r(*fdct_r_row, mm1); |
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paddd_r2r(mm2, mm0); |
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paddd_m2r(*fdct_r_row, mm5); |
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psrad_i2r(SHIFT_FRW_ROW, mm1); |
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paddd_r2r(mm6, mm5); |
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psrad_i2r(SHIFT_FRW_ROW, mm0); |
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psrad_i2r(SHIFT_FRW_ROW, mm5); |
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packssdw_r2r(mm0, mm3); |
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packssdw_r2r(mm5, mm1); |
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movq_r2r(mm3, mm6); |
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punpcklwd_r2r(mm1, mm3); |
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punpckhwd_r2r(mm1, mm6); |
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movq_r2m(mm3, *(out + 0)); |
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movq_r2m(mm6, *(out + 4)); |
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} |
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void ff_fdct_mmx(int16_t *block) |
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{ |
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int64_t align_tmp[16] ATTR_ALIGN(8); |
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int16_t * const block_tmp= (int16_t*)align_tmp; |
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int16_t *block1, *out; |
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const int16_t *table; |
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int i; |
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block1 = block_tmp; |
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fdct_col(block, block1, 0); |
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fdct_col(block, block1, 4); |
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block1 = block_tmp; |
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table = tab_frw_01234567; |
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out = block; |
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for(i=8;i>0;i--) { |
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fdct_row(block1, out, table); |
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block1 += 8; |
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table += 32; |
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out += 8; |
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} |
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}
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