ref: 8fbd87e5041a340a30c20428f4caa540cb931550
dir: /src/itx_1d.c/
/* * Copyright © 2018, VideoLAN and dav1d authors * Copyright © 2018, Two Orioles, LLC * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include <stddef.h> #include <stdint.h> #include "common/attributes.h" static void NOINLINE inv_dct4_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { const int in0 = in[0 * in_s], in1 = in[1 * in_s]; const int in2 = in[2 * in_s], in3 = in[3 * in_s]; int t0 = ((in0 + in2) * 2896 + 2048) >> 12; int t1 = ((in0 - in2) * 2896 + 2048) >> 12; int t2 = (in1 * 1567 - in3 * 3784 + 2048) >> 12; int t3 = (in1 * 3784 + in3 * 1567 + 2048) >> 12; out[0 * out_s] = t0 + t3; out[1 * out_s] = t1 + t2; out[2 * out_s] = t1 - t2; out[3 * out_s] = t0 - t3; } static void NOINLINE inv_dct8_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { coef tmp[4]; inv_dct4_1d(in, in_s * 2, tmp, 1); const int in1 = in[1 * in_s], in3 = in[3 * in_s]; const int in5 = in[5 * in_s], in7 = in[7 * in_s]; int t4a = (in1 * 799 - in7 * 4017 + 2048) >> 12; int t5a = (in5 * 3406 - in3 * 2276 + 2048) >> 12; int t6a = (in5 * 2276 + in3 * 3406 + 2048) >> 12; int t7a = (in1 * 4017 + in7 * 799 + 2048) >> 12; int t4 = t4a + t5a; t5a = t4a - t5a; int t7 = t7a + t6a; t6a = t7a - t6a; int t5 = ((t6a - t5a) * 2896 + 2048) >> 12; int t6 = ((t6a + t5a) * 2896 + 2048) >> 12; out[0 * out_s] = tmp[0] + t7; out[1 * out_s] = tmp[1] + t6; out[2 * out_s] = tmp[2] + t5; out[3 * out_s] = tmp[3] + t4; out[4 * out_s] = tmp[3] - t4; out[5 * out_s] = tmp[2] - t5; out[6 * out_s] = tmp[1] - t6; out[7 * out_s] = tmp[0] - t7; } static void NOINLINE inv_dct16_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { coef tmp[8]; inv_dct8_1d(in, in_s * 2, tmp, 1); const int in1 = in[ 1 * in_s], in3 = in[ 3 * in_s]; const int in5 = in[ 5 * in_s], in7 = in[ 7 * in_s]; const int in9 = in[ 9 * in_s], in11 = in[11 * in_s]; const int in13 = in[13 * in_s], in15 = in[15 * in_s]; int t8a = (in1 * 401 - in15 * 4076 + 2048) >> 12; int t15a = (in1 * 4076 + in15 * 401 + 2048) >> 12; int t9a = (in9 * 3166 - in7 * 2598 + 2048) >> 12; int t14a = (in9 * 2598 + in7 * 3166 + 2048) >> 12; int t10a = (in5 * 1931 - in11 * 3612 + 2048) >> 12; int t13a = (in5 * 3612 + in11 * 1931 + 2048) >> 12; int t11a = (in13 * 3920 - in3 * 1189 + 2048) >> 12; int t12a = (in13 * 1189 + in3 * 3920 + 2048) >> 12; int t8 = t8a + t9a; int t9 = t8a - t9a; int t10 = t11a - t10a; int t11 = t11a + t10a; int t12 = t12a + t13a; int t13 = t12a - t13a; int t14 = t15a - t14a; int t15 = t15a + t14a; t9a = ( t14 * 1567 - t9 * 3784 + 2048) >> 12; t14a = ( t14 * 3784 + t9 * 1567 + 2048) >> 12; t10a = (-(t13 * 3784 + t10 * 1567) + 2048) >> 12; t13a = ( t13 * 1567 - t10 * 3784 + 2048) >> 12; t8a = t8 + t11; t9 = t9a + t10a; t10 = t9a - t10a; t11a = t8 - t11; t12a = t15 - t12; t13 = t14a - t13a; t14 = t14a + t13a; t15a = t15 + t12; t10a = ((t13 - t10) * 2896 + 2048) >> 12; t13a = ((t13 + t10) * 2896 + 2048) >> 12; t11 = ((t12a - t11a) * 2896 + 2048) >> 12; t12 = ((t12a + t11a) * 2896 + 2048) >> 12; out[ 0 * out_s] = tmp[0] + t15a; out[ 1 * out_s] = tmp[1] + t14; out[ 2 * out_s] = tmp[2] + t13a; out[ 3 * out_s] = tmp[3] + t12; out[ 4 * out_s] = tmp[4] + t11; out[ 5 * out_s] = tmp[5] + t10a; out[ 6 * out_s] = tmp[6] + t9; out[ 7 * out_s] = tmp[7] + t8a; out[ 8 * out_s] = tmp[7] - t8a; out[ 9 * out_s] = tmp[6] - t9; out[10 * out_s] = tmp[5] - t10a; out[11 * out_s] = tmp[4] - t11; out[12 * out_s] = tmp[3] - t12; out[13 * out_s] = tmp[2] - t13a; out[14 * out_s] = tmp[1] - t14; out[15 * out_s] = tmp[0] - t15a; } static void NOINLINE inv_dct32_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { coef tmp[16]; inv_dct16_1d(in, in_s * 2, tmp, 1); const int in1 = in[ 1 * in_s], in3 = in[ 3 * in_s]; const int in5 = in[ 5 * in_s], in7 = in[ 7 * in_s]; const int in9 = in[ 9 * in_s], in11 = in[11 * in_s]; const int in13 = in[13 * in_s], in15 = in[15 * in_s]; const int in17 = in[17 * in_s], in19 = in[19 * in_s]; const int in21 = in[21 * in_s], in23 = in[23 * in_s]; const int in25 = in[25 * in_s], in27 = in[27 * in_s]; const int in29 = in[29 * in_s], in31 = in[31 * in_s]; int t16a = (in1 * 201 - in31 * 4091 + 2048) >> 12; int t31a = (in1 * 4091 + in31 * 201 + 2048) >> 12; int t17a = (in17 * 3035 - in15 * 2751 + 2048) >> 12; int t30a = (in17 * 2751 + in15 * 3035 + 2048) >> 12; int t18a = (in9 * 1751 - in23 * 3703 + 2048) >> 12; int t29a = (in9 * 3703 + in23 * 1751 + 2048) >> 12; int t19a = (in25 * 3857 - in7 * 1380 + 2048) >> 12; int t28a = (in25 * 1380 + in7 * 3857 + 2048) >> 12; int t20a = (in5 * 995 - in27 * 3973 + 2048) >> 12; int t27a = (in5 * 3973 + in27 * 995 + 2048) >> 12; int t21a = (in21 * 3513 - in11 * 2106 + 2048) >> 12; int t26a = (in21 * 2106 + in11 * 3513 + 2048) >> 12; int t22a = (in13 * 2440 - in19 * 3290 + 2048) >> 12; int t25a = (in13 * 3290 + in19 * 2440 + 2048) >> 12; int t23a = (in29 * 4052 - in3 * 601 + 2048) >> 12; int t24a = (in29 * 601 + in3 * 4052 + 2048) >> 12; int t16 = t16a + t17a; int t17 = t16a - t17a; int t18 = t19a - t18a; int t19 = t19a + t18a; int t20 = t20a + t21a; int t21 = t20a - t21a; int t22 = t23a - t22a; int t23 = t23a + t22a; int t24 = t24a + t25a; int t25 = t24a - t25a; int t26 = t27a - t26a; int t27 = t27a + t26a; int t28 = t28a + t29a; int t29 = t28a - t29a; int t30 = t31a - t30a; int t31 = t31a + t30a; t17a = ( t30 * 799 - t17 * 4017 + 2048) >> 12; t30a = ( t30 * 4017 + t17 * 799 + 2048) >> 12; t18a = (-(t29 * 4017 + t18 * 799) + 2048) >> 12; t29a = ( t29 * 799 - t18 * 4017 + 2048) >> 12; t21a = ( t26 * 3406 - t21 * 2276 + 2048) >> 12; t26a = ( t26 * 2276 + t21 * 3406 + 2048) >> 12; t22a = (-(t25 * 2276 + t22 * 3406) + 2048) >> 12; t25a = ( t25 * 3406 - t22 * 2276 + 2048) >> 12; t16a = t16 + t19; t17 = t17a + t18a; t18 = t17a - t18a; t19a = t16 - t19; t20a = t23 - t20; t21 = t22a - t21a; t22 = t22a + t21a; t23a = t23 + t20; t24a = t24 + t27; t25 = t25a + t26a; t26 = t25a - t26a; t27a = t24 - t27; t28a = t31 - t28; t29 = t30a - t29a; t30 = t30a + t29a; t31a = t31 + t28; t18a = ( t29 * 1567 - t18 * 3784 + 2048) >> 12; t29a = ( t29 * 3784 + t18 * 1567 + 2048) >> 12; t19 = ( t28a * 1567 - t19a * 3784 + 2048) >> 12; t28 = ( t28a * 3784 + t19a * 1567 + 2048) >> 12; t20 = (-(t27a * 3784 + t20a * 1567) + 2048) >> 12; t27 = ( t27a * 1567 - t20a * 3784 + 2048) >> 12; t21a = (-(t26 * 3784 + t21 * 1567) + 2048) >> 12; t26a = ( t26 * 1567 - t21 * 3784 + 2048) >> 12; t16 = t16a + t23a; t17a = t17 + t22; t18 = t18a + t21a; t19a = t19 + t20; t20a = t19 - t20; t21 = t18a - t21a; t22a = t17 - t22; t23 = t16a - t23a; t24 = t31a - t24a; t25a = t30 - t25; t26 = t29a - t26a; t27a = t28 - t27; t28a = t28 + t27; t29 = t29a + t26a; t30a = t30 + t25; t31 = t31a + t24a; t20 = ((t27a - t20a) * 2896 + 2048) >> 12; t27 = ((t27a + t20a) * 2896 + 2048) >> 12; t21a = ((t26 - t21 ) * 2896 + 2048) >> 12; t26a = ((t26 + t21 ) * 2896 + 2048) >> 12; t22 = ((t25a - t22a) * 2896 + 2048) >> 12; t25 = ((t25a + t22a) * 2896 + 2048) >> 12; t23a = ((t24 - t23 ) * 2896 + 2048) >> 12; t24a = ((t24 + t23 ) * 2896 + 2048) >> 12; out[ 0 * out_s] = tmp[ 0] + t31; out[ 1 * out_s] = tmp[ 1] + t30a; out[ 2 * out_s] = tmp[ 2] + t29; out[ 3 * out_s] = tmp[ 3] + t28a; out[ 4 * out_s] = tmp[ 4] + t27; out[ 5 * out_s] = tmp[ 5] + t26a; out[ 6 * out_s] = tmp[ 6] + t25; out[ 7 * out_s] = tmp[ 7] + t24a; out[ 8 * out_s] = tmp[ 8] + t23a; out[ 9 * out_s] = tmp[ 9] + t22; out[10 * out_s] = tmp[10] + t21a; out[11 * out_s] = tmp[11] + t20; out[12 * out_s] = tmp[12] + t19a; out[13 * out_s] = tmp[13] + t18; out[14 * out_s] = tmp[14] + t17a; out[15 * out_s] = tmp[15] + t16; out[16 * out_s] = tmp[15] - t16; out[17 * out_s] = tmp[14] - t17a; out[18 * out_s] = tmp[13] - t18; out[19 * out_s] = tmp[12] - t19a; out[20 * out_s] = tmp[11] - t20; out[21 * out_s] = tmp[10] - t21a; out[22 * out_s] = tmp[ 9] - t22; out[23 * out_s] = tmp[ 8] - t23a; out[24 * out_s] = tmp[ 7] - t24a; out[25 * out_s] = tmp[ 6] - t25; out[26 * out_s] = tmp[ 5] - t26a; out[27 * out_s] = tmp[ 4] - t27; out[28 * out_s] = tmp[ 3] - t28a; out[29 * out_s] = tmp[ 2] - t29; out[30 * out_s] = tmp[ 1] - t30a; out[31 * out_s] = tmp[ 0] - t31; } static void NOINLINE inv_dct64_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { coef tmp[32]; inv_dct32_1d(in, in_s * 2, tmp, 1); const int in1 = in[ 1 * in_s], in3 = in[ 3 * in_s]; const int in5 = in[ 5 * in_s], in7 = in[ 7 * in_s]; const int in9 = in[ 9 * in_s], in11 = in[11 * in_s]; const int in13 = in[13 * in_s], in15 = in[15 * in_s]; const int in17 = in[17 * in_s], in19 = in[19 * in_s]; const int in21 = in[21 * in_s], in23 = in[23 * in_s]; const int in25 = in[25 * in_s], in27 = in[27 * in_s]; const int in29 = in[29 * in_s], in31 = in[31 * in_s]; const int in33 = in[33 * in_s], in35 = in[35 * in_s]; const int in37 = in[37 * in_s], in39 = in[39 * in_s]; const int in41 = in[41 * in_s], in43 = in[43 * in_s]; const int in45 = in[45 * in_s], in47 = in[47 * in_s]; const int in49 = in[49 * in_s], in51 = in[51 * in_s]; const int in53 = in[53 * in_s], in55 = in[55 * in_s]; const int in57 = in[57 * in_s], in59 = in[59 * in_s]; const int in61 = in[61 * in_s], in63 = in[63 * in_s]; int t32a = (in1 * 101 - in63 * 4095 + 2048) >> 12; int t33a = (in33 * 2967 - in31 * 2824 + 2048) >> 12; int t34a = (in17 * 1660 - in47 * 3745 + 2048) >> 12; int t35a = (in49 * 3822 - in15 * 1474 + 2048) >> 12; int t36a = (in9 * 897 - in55 * 3996 + 2048) >> 12; int t37a = (in41 * 3461 - in23 * 2191 + 2048) >> 12; int t38a = (in25 * 2359 - in39 * 3349 + 2048) >> 12; int t39a = (in57 * 4036 - in7 * 700 + 2048) >> 12; int t40a = (in5 * 501 - in59 * 4065 + 2048) >> 12; int t41a = (in37 * 3229 - in27 * 2520 + 2048) >> 12; int t42a = (in21 * 2019 - in43 * 3564 + 2048) >> 12; int t43a = (in53 * 3948 - in11 * 1092 + 2048) >> 12; int t44a = (in13 * 1285 - in51 * 3889 + 2048) >> 12; int t45a = (in45 * 3659 - in19 * 1842 + 2048) >> 12; int t46a = (in29 * 2675 - in35 * 3102 + 2048) >> 12; int t47a = (in61 * 4085 - in3 * 301 + 2048) >> 12; int t48a = (in61 * 301 + in3 * 4085 + 2048) >> 12; int t49a = (in29 * 3102 + in35 * 2675 + 2048) >> 12; int t50a = (in45 * 1842 + in19 * 3659 + 2048) >> 12; int t51a = (in13 * 3889 + in51 * 1285 + 2048) >> 12; int t52a = (in53 * 1092 + in11 * 3948 + 2048) >> 12; int t53a = (in21 * 3564 + in43 * 2019 + 2048) >> 12; int t54a = (in37 * 2520 + in27 * 3229 + 2048) >> 12; int t55a = (in5 * 4065 + in59 * 501 + 2048) >> 12; int t56a = (in57 * 700 + in7 * 4036 + 2048) >> 12; int t57a = (in25 * 3349 + in39 * 2359 + 2048) >> 12; int t58a = (in41 * 2191 + in23 * 3461 + 2048) >> 12; int t59a = (in9 * 3996 + in55 * 897 + 2048) >> 12; int t60a = (in49 * 1474 + in15 * 3822 + 2048) >> 12; int t61a = (in17 * 3745 + in47 * 1660 + 2048) >> 12; int t62a = (in33 * 2824 + in31 * 2967 + 2048) >> 12; int t63a = (in1 * 4095 + in63 * 101 + 2048) >> 12; int t32 = t32a + t33a; int t33 = t32a - t33a; int t34 = t35a - t34a; int t35 = t35a + t34a; int t36 = t36a + t37a; int t37 = t36a - t37a; int t38 = t39a - t38a; int t39 = t39a + t38a; int t40 = t40a + t41a; int t41 = t40a - t41a; int t42 = t43a - t42a; int t43 = t43a + t42a; int t44 = t44a + t45a; int t45 = t44a - t45a; int t46 = t47a - t46a; int t47 = t47a + t46a; int t48 = t48a + t49a; int t49 = t48a - t49a; int t50 = t51a - t50a; int t51 = t51a + t50a; int t52 = t52a + t53a; int t53 = t52a - t53a; int t54 = t55a - t54a; int t55 = t55a + t54a; int t56 = t56a + t57a; int t57 = t56a - t57a; int t58 = t59a - t58a; int t59 = t59a + t58a; int t60 = t60a + t61a; int t61 = t60a - t61a; int t62 = t63a - t62a; int t63 = t63a + t62a; t33a = (t33 * -4076 + t62 * 401 + 2048) >> 12; t34a = (t34 * - 401 + t61 * -4076 + 2048) >> 12; t37a = (t37 * -2598 + t58 * 3166 + 2048) >> 12; t38a = (t38 * -3166 + t57 * -2598 + 2048) >> 12; t41a = (t41 * -3612 + t54 * 1931 + 2048) >> 12; t42a = (t42 * -1931 + t53 * -3612 + 2048) >> 12; t45a = (t45 * -1189 + t50 * 3920 + 2048) >> 12; t46a = (t46 * -3920 + t49 * -1189 + 2048) >> 12; t49a = (t46 * -1189 + t49 * 3920 + 2048) >> 12; t50a = (t45 * 3920 + t50 * 1189 + 2048) >> 12; t53a = (t42 * -3612 + t53 * 1931 + 2048) >> 12; t54a = (t41 * 1931 + t54 * 3612 + 2048) >> 12; t57a = (t38 * -2598 + t57 * 3166 + 2048) >> 12; t58a = (t37 * 3166 + t58 * 2598 + 2048) >> 12; t61a = (t34 * -4076 + t61 * 401 + 2048) >> 12; t62a = (t33 * 401 + t62 * 4076 + 2048) >> 12; t32a = t32 + t35; t33 = t33a + t34a; t34 = t33a - t34a; t35a = t32 - t35; t36a = t39 - t36; t37 = t38a - t37a; t38 = t38a + t37a; t39a = t39 + t36; t40a = t40 + t43; t41 = t41a + t42a; t42 = t41a - t42a; t43a = t40 - t43; t44a = t47 - t44; t45 = t46a - t45a; t46 = t46a + t45a; t47a = t47 + t44; t48a = t48 + t51; t49 = t49a + t50a; t50 = t49a - t50a; t51a = t48 - t51; t52a = t55 - t52; t53 = t54a - t53a; t54 = t54a + t53a; t55a = t55 + t52; t56a = t56 + t59; t57 = t57a + t58a; t58 = t57a - t58a; t59a = t56 - t59; t60a = t63 - t60; t61 = t62a - t61a; t62 = t62a + t61a; t63a = t63 + t60; t34a = (t34 * -4017 + t61 * 799 + 2048) >> 12; t35 = (t35a * -4017 + t60a * 799 + 2048) >> 12; t36 = (t36a * - 799 + t59a * -4017 + 2048) >> 12; t37a = (t37 * - 799 + t58 * -4017 + 2048) >> 12; t42a = (t42 * -2276 + t53 * 3406 + 2048) >> 12; t43 = (t43a * -2276 + t52a * 3406 + 2048) >> 12; t44 = (t44a * -3406 + t51a * -2276 + 2048) >> 12; t45a = (t45 * -3406 + t50 * -2276 + 2048) >> 12; t50a = (t45 * -2276 + t50 * 3406 + 2048) >> 12; t51 = (t44a * -2276 + t51a * 3406 + 2048) >> 12; t52 = (t43a * 3406 + t52a * 2276 + 2048) >> 12; t53a = (t42 * 3406 + t53 * 2276 + 2048) >> 12; t58a = (t37 * -4017 + t58 * 799 + 2048) >> 12; t59 = (t36a * -4017 + t59a * 799 + 2048) >> 12; t60 = (t35a * 799 + t60a * 4017 + 2048) >> 12; t61a = (t34 * 799 + t61 * 4017 + 2048) >> 12; t32 = t32a + t39a; t33a = t33 + t38; t34 = t34a + t37a; t35a = t35 + t36; t36a = t35 - t36; t37 = t34a - t37a; t38a = t33 - t38; t39 = t32a - t39a; t40 = t47a - t40a; t41a = t46 - t41; t42 = t45a - t42a; t43a = t44 - t43; t44a = t44 + t43; t45 = t45a + t42a; t46a = t46 + t41; t47 = t47a + t40a; t48 = t48a + t55a; t49a = t49 + t54; t50 = t50a + t53a; t51a = t51 + t52; t52a = t51 - t52; t53 = t50a - t53a; t54a = t49 - t54; t55 = t48a - t55a; t56 = t63a - t56a; t57a = t62 - t57; t58 = t61a - t58a; t59a = t60 - t59; t60a = t60 + t59; t61 = t61a + t58a; t62a = t62 + t57; t63 = t63a + t56a; t36 = (t36a * -3784 + t59a * 1567 + 2048) >> 12; t37a = (t37 * -3784 + t58 * 1567 + 2048) >> 12; t38 = (t38a * -3784 + t57a * 1567 + 2048) >> 12; t39a = (t39 * -3784 + t56 * 1567 + 2048) >> 12; t40a = (t40 * -1567 + t55 * -3784 + 2048) >> 12; t41 = (t41a * -1567 + t54a * -3784 + 2048) >> 12; t42a = (t42 * -1567 + t53 * -3784 + 2048) >> 12; t43 = (t43a * -1567 + t52a * -3784 + 2048) >> 12; t52 = (t43a * -3784 + t52a * 1567 + 2048) >> 12; t53a = (t42 * -3784 + t53 * 1567 + 2048) >> 12; t54 = (t41a * -3784 + t54a * 1567 + 2048) >> 12; t55a = (t40 * -3784 + t55 * 1567 + 2048) >> 12; t56a = (t39 * 1567 + t56 * 3784 + 2048) >> 12; t57 = (t38a * 1567 + t57a * 3784 + 2048) >> 12; t58a = (t37 * 1567 + t58 * 3784 + 2048) >> 12; t59 = (t36a * 1567 + t59a * 3784 + 2048) >> 12; t32a = t32 + t47; t33 = t33a + t46a; t34a = t34 + t45; t35 = t35a + t44a; t36a = t36 + t43; t37 = t37a + t42a; t38a = t38 + t41; t39 = t39a + t40a; t40 = t39a - t40a; t41a = t38 - t41; t42 = t37a - t42a; t43a = t36 - t43; t44 = t35a - t44a; t45a = t34 - t45; t46 = t33a - t46a; t47a = t32 - t47; t48a = t63 - t48; t49 = t62a - t49a; t50a = t61 - t50; t51 = t60a - t51a; t52a = t59 - t52; t53 = t58a - t53a; t54a = t57 - t54; t55 = t56a - t55a; t56 = t56a + t55a; t57a = t57 + t54; t58 = t58a + t53a; t59a = t59 + t52; t60 = t60a + t51a; t61a = t61 + t50; t62 = t62a + t49a; t63a = t63 + t48; t40a = (t40 * -2896 + t55 * 2896 + 2048) >> 12; t41 = (t41a * -2896 + t54a * 2896 + 2048) >> 12; t42a = (t42 * -2896 + t53 * 2896 + 2048) >> 12; t43 = (t43a * -2896 + t52a * 2896 + 2048) >> 12; t44a = (t44 * -2896 + t51 * 2896 + 2048) >> 12; t45 = (t45a * -2896 + t50a * 2896 + 2048) >> 12; t46a = (t46 * -2896 + t49 * 2896 + 2048) >> 12; t47 = (t47a * -2896 + t48a * 2896 + 2048) >> 12; t48 = (t47a * 2896 + t48a * 2896 + 2048) >> 12; t49a = (t46 * 2896 + t49 * 2896 + 2048) >> 12; t50 = (t45a * 2896 + t50a * 2896 + 2048) >> 12; t51a = (t44 * 2896 + t51 * 2896 + 2048) >> 12; t52 = (t43a * 2896 + t52a * 2896 + 2048) >> 12; t53a = (t42 * 2896 + t53 * 2896 + 2048) >> 12; t54 = (t41a * 2896 + t54a * 2896 + 2048) >> 12; t55a = (t40 * 2896 + t55 * 2896 + 2048) >> 12; out[ 0 * out_s] = tmp[ 0] + t63a; out[ 1 * out_s] = tmp[ 1] + t62; out[ 2 * out_s] = tmp[ 2] + t61a; out[ 3 * out_s] = tmp[ 3] + t60; out[ 4 * out_s] = tmp[ 4] + t59a; out[ 5 * out_s] = tmp[ 5] + t58; out[ 6 * out_s] = tmp[ 6] + t57a; out[ 7 * out_s] = tmp[ 7] + t56; out[ 8 * out_s] = tmp[ 8] + t55a; out[ 9 * out_s] = tmp[ 9] + t54; out[10 * out_s] = tmp[10] + t53a; out[11 * out_s] = tmp[11] + t52; out[12 * out_s] = tmp[12] + t51a; out[13 * out_s] = tmp[13] + t50; out[14 * out_s] = tmp[14] + t49a; out[15 * out_s] = tmp[15] + t48; out[16 * out_s] = tmp[16] + t47; out[17 * out_s] = tmp[17] + t46a; out[18 * out_s] = tmp[18] + t45; out[19 * out_s] = tmp[19] + t44a; out[20 * out_s] = tmp[20] + t43; out[21 * out_s] = tmp[21] + t42a; out[22 * out_s] = tmp[22] + t41; out[23 * out_s] = tmp[23] + t40a; out[24 * out_s] = tmp[24] + t39; out[25 * out_s] = tmp[25] + t38a; out[26 * out_s] = tmp[26] + t37; out[27 * out_s] = tmp[27] + t36a; out[28 * out_s] = tmp[28] + t35; out[29 * out_s] = tmp[29] + t34a; out[30 * out_s] = tmp[30] + t33; out[31 * out_s] = tmp[31] + t32a; out[32 * out_s] = tmp[31] - t32a; out[33 * out_s] = tmp[30] - t33; out[34 * out_s] = tmp[29] - t34a; out[35 * out_s] = tmp[28] - t35; out[36 * out_s] = tmp[27] - t36a; out[37 * out_s] = tmp[26] - t37; out[38 * out_s] = tmp[25] - t38a; out[39 * out_s] = tmp[24] - t39; out[40 * out_s] = tmp[23] - t40a; out[41 * out_s] = tmp[22] - t41; out[42 * out_s] = tmp[21] - t42a; out[43 * out_s] = tmp[20] - t43; out[44 * out_s] = tmp[19] - t44a; out[45 * out_s] = tmp[18] - t45; out[46 * out_s] = tmp[17] - t46a; out[47 * out_s] = tmp[16] - t47; out[48 * out_s] = tmp[15] - t48; out[49 * out_s] = tmp[14] - t49a; out[50 * out_s] = tmp[13] - t50; out[51 * out_s] = tmp[12] - t51a; out[52 * out_s] = tmp[11] - t52; out[53 * out_s] = tmp[10] - t53a; out[54 * out_s] = tmp[ 9] - t54; out[55 * out_s] = tmp[ 8] - t55a; out[56 * out_s] = tmp[ 7] - t56; out[57 * out_s] = tmp[ 6] - t57a; out[58 * out_s] = tmp[ 5] - t58; out[59 * out_s] = tmp[ 4] - t59a; out[60 * out_s] = tmp[ 3] - t60; out[61 * out_s] = tmp[ 2] - t61a; out[62 * out_s] = tmp[ 1] - t62; out[63 * out_s] = tmp[ 0] - t63a; } static void NOINLINE inv_adst4_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { const int in0 = in[0 * in_s], in1 = in[1 * in_s]; const int in2 = in[2 * in_s], in3 = in[3 * in_s]; int t0 = 1321 * in0 + 3803 * in2 + 2482 * in3; int t1 = 2482 * in0 - 1321 * in2 - 3803 * in3; int t2 = 3344 * (in0 - in2 + in3); int t3 = 3344 * in1; out[0 * out_s] = (t0 + t3 + 2048) >> 12; out[1 * out_s] = (t1 + t3 + 2048) >> 12; out[2 * out_s] = (t2 + 2048) >> 12; out[3 * out_s] = (t0 + t1 - t3 + 2048) >> 12; } static void NOINLINE inv_adst8_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { const int in0 = in[0 * in_s], in1 = in[1 * in_s]; const int in2 = in[2 * in_s], in3 = in[3 * in_s]; const int in4 = in[4 * in_s], in5 = in[5 * in_s]; const int in6 = in[6 * in_s], in7 = in[7 * in_s]; int t0a = (4076 * in7 + 401 * in0 + 2048) >> 12; int t1a = ( 401 * in7 - 4076 * in0 + 2048) >> 12; int t2a = (3612 * in5 + 1931 * in2 + 2048) >> 12; int t3a = (1931 * in5 - 3612 * in2 + 2048) >> 12; int t4a = (2598 * in3 + 3166 * in4 + 2048) >> 12; int t5a = (3166 * in3 - 2598 * in4 + 2048) >> 12; int t6a = (1189 * in1 + 3920 * in6 + 2048) >> 12; int t7a = (3920 * in1 - 1189 * in6 + 2048) >> 12; int t0 = t0a + t4a; int t1 = t1a + t5a; int t2 = t2a + t6a; int t3 = t3a + t7a; int t4 = t0a - t4a; int t5 = t1a - t5a; int t6 = t2a - t6a; int t7 = t3a - t7a; t4a = (3784 * t4 + 1567 * t5 + 2048) >> 12; t5a = (1567 * t4 - 3784 * t5 + 2048) >> 12; t6a = (3784 * t7 - 1567 * t6 + 2048) >> 12; t7a = (1567 * t7 + 3784 * t6 + 2048) >> 12; out[0 * out_s] = t0 + t2; out[7 * out_s] = -(t1 + t3); t2 = t0 - t2; t3 = t1 - t3; out[1 * out_s] = -(t4a + t6a); out[6 * out_s] = t5a + t7a; t6 = t4a - t6a; t7 = t5a - t7a; out[3 * out_s] = -(((t2 + t3) * 2896 + 2048) >> 12); out[4 * out_s] = ((t2 - t3) * 2896 + 2048) >> 12; out[2 * out_s] = ((t6 + t7) * 2896 + 2048) >> 12; out[5 * out_s] = -(((t6 - t7) * 2896 + 2048) >> 12); } static void NOINLINE inv_adst16_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { const int in0 = in[ 0 * in_s], in1 = in[ 1 * in_s]; const int in2 = in[ 2 * in_s], in3 = in[ 3 * in_s]; const int in4 = in[ 4 * in_s], in5 = in[ 5 * in_s]; const int in6 = in[ 6 * in_s], in7 = in[ 7 * in_s]; const int in8 = in[ 8 * in_s], in9 = in[ 9 * in_s]; const int in10 = in[10 * in_s], in11 = in[11 * in_s]; const int in12 = in[12 * in_s], in13 = in[13 * in_s]; const int in14 = in[14 * in_s], in15 = in[15 * in_s]; int t0 = (in15 * 4091 + in0 * 201 + 2048) >> 12; int t1 = (in15 * 201 - in0 * 4091 + 2048) >> 12; int t2 = (in13 * 3973 + in2 * 995 + 2048) >> 12; int t3 = (in13 * 995 - in2 * 3973 + 2048) >> 12; int t4 = (in11 * 3703 + in4 * 1751 + 2048) >> 12; int t5 = (in11 * 1751 - in4 * 3703 + 2048) >> 12; int t6 = (in9 * 3290 + in6 * 2440 + 2048) >> 12; int t7 = (in9 * 2440 - in6 * 3290 + 2048) >> 12; int t8 = (in7 * 2751 + in8 * 3035 + 2048) >> 12; int t9 = (in7 * 3035 - in8 * 2751 + 2048) >> 12; int t10 = (in5 * 2106 + in10 * 3513 + 2048) >> 12; int t11 = (in5 * 3513 - in10 * 2106 + 2048) >> 12; int t12 = (in3 * 1380 + in12 * 3857 + 2048) >> 12; int t13 = (in3 * 3857 - in12 * 1380 + 2048) >> 12; int t14 = (in1 * 601 + in14 * 4052 + 2048) >> 12; int t15 = (in1 * 4052 - in14 * 601 + 2048) >> 12; int t0a = t0 + t8; int t1a = t1 + t9; int t2a = t2 + t10; int t3a = t3 + t11; int t4a = t4 + t12; int t5a = t5 + t13; int t6a = t6 + t14; int t7a = t7 + t15; int t8a = t0 - t8; int t9a = t1 - t9; int t10a = t2 - t10; int t11a = t3 - t11; int t12a = t4 - t12; int t13a = t5 - t13; int t14a = t6 - t14; int t15a = t7 - t15; t8 = (t8a * 4017 + t9a * 799 + 2048) >> 12; t9 = (t8a * 799 - t9a * 4017 + 2048) >> 12; t10 = (t10a * 2276 + t11a * 3406 + 2048) >> 12; t11 = (t10a * 3406 - t11a * 2276 + 2048) >> 12; t12 = (t13a * 4017 - t12a * 799 + 2048) >> 12; t13 = (t13a * 799 + t12a * 4017 + 2048) >> 12; t14 = (t15a * 2276 - t14a * 3406 + 2048) >> 12; t15 = (t15a * 3406 + t14a * 2276 + 2048) >> 12; t0 = t0a + t4a; t1 = t1a + t5a; t2 = t2a + t6a; t3 = t3a + t7a; t4 = t0a - t4a; t5 = t1a - t5a; t6 = t2a - t6a; t7 = t3a - t7a; t8a = t8 + t12; t9a = t9 + t13; t10a = t10 + t14; t11a = t11 + t15; t12a = t8 - t12; t13a = t9 - t13; t14a = t10 - t14; t15a = t11 - t15; t4a = (t4 * 3784 + t5 * 1567 + 2048) >> 12; t5a = (t4 * 1567 - t5 * 3784 + 2048) >> 12; t6a = (t7 * 3784 - t6 * 1567 + 2048) >> 12; t7a = (t7 * 1567 + t6 * 3784 + 2048) >> 12; t12 = (t12a * 3784 + t13a * 1567 + 2048) >> 12; t13 = (t12a * 1567 - t13a * 3784 + 2048) >> 12; t14 = (t15a * 3784 - t14a * 1567 + 2048) >> 12; t15 = (t15a * 1567 + t14a * 3784 + 2048) >> 12; out[ 0 * out_s] = t0 + t2; out[15 * out_s] = -(t1 + t3); t2a = t0 - t2; t3a = t1 - t3; out[ 3 * out_s] = -(t4a + t6a); out[12 * out_s] = t5a + t7a; t6 = t4a - t6a; t7 = t5a - t7a; out[ 1 * out_s] = -(t8a + t10a); out[14 * out_s] = t9a + t11a; t10 = t8a - t10a; t11 = t9a - t11a; out[ 2 * out_s] = t12 + t14; out[13 * out_s] = -(t13 + t15); t14a = t12 - t14; t15a = t13 - t15; out[ 7 * out_s] = -(((t2a + t3a) * 2896 + 2048) >> 12); out[ 8 * out_s] = ((t2a - t3a) * 2896 + 2048) >> 12; out[ 4 * out_s] = ((t6 + t7) * 2896 + 2048) >> 12; out[11 * out_s] = -(((t6 - t7) * 2896 + 2048) >> 12); out[ 6 * out_s] = ((t10 + t11) * 2896 + 2048) >> 12; out[ 9 * out_s] = -(((t10 - t11) * 2896 + 2048) >> 12); out[ 5 * out_s] = -(((t14a + t15a) * 2896 + 2048) >> 12); out[10 * out_s] = ((t14a - t15a) * 2896 + 2048) >> 12; } #define flip_inv_adst(sz) \ static void inv_flipadst##sz##_1d(const coef *const in, const ptrdiff_t in_s, \ coef *const out, const ptrdiff_t out_s) \ { \ inv_adst##sz##_1d(in, in_s, &out[(sz - 1) * out_s], -out_s); \ } flip_inv_adst(4) flip_inv_adst(8) flip_inv_adst(16) #undef flip_inv_adst static void NOINLINE inv_identity4_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { for (int i = 0; i < 4; i++) out[out_s * i] = (in[in_s * i] * 5793 + 2048) >> 12; } static void NOINLINE inv_identity8_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { for (int i = 0; i < 8; i++) out[out_s * i] = in[in_s * i] * 2; } static void NOINLINE inv_identity16_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { for (int i = 0; i < 16; i++) out[out_s * i] = (in[in_s * i] * 2 * 5793 + 2048) >> 12; } static void NOINLINE inv_identity32_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s) { for (int i = 0; i < 32; i++) out[out_s * i] = in[in_s * i] * 4; } static void NOINLINE inv_wht4_1d(const coef *const in, const ptrdiff_t in_s, coef *const out, const ptrdiff_t out_s, const int pass) { const int sh = 2 * !pass; const int in0 = in[0 * in_s] >> sh, in1 = in[1 * in_s] >> sh; const int in2 = in[2 * in_s] >> sh, in3 = in[3 * in_s] >> sh; const int t0 = in0 + in1; const int t2 = in2 - in3; const int t4 = (t0 - t2) >> 1; const int t3 = t4 - in3; const int t1 = t4 - in1; out[0 * out_s] = t0 - t3; out[1 * out_s] = t3; out[2 * out_s] = t1; out[3 * out_s] = t2 + t1; }