diff options
Diffstat (limited to 'third_party/dav1d/src/itx_1d.c')
| -rw-r--r-- | third_party/dav1d/src/itx_1d.c | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/third_party/dav1d/src/itx_1d.c b/third_party/dav1d/src/itx_1d.c new file mode 100644 index 0000000000..ca14fc8c41 --- /dev/null +++ b/third_party/dav1d/src/itx_1d.c @@ -0,0 +1,1034 @@ +/* + * Copyright © 2018-2019, VideoLAN and dav1d authors + * Copyright © 2018-2019, 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/intops.h" + +#include "src/itx_1d.h" + +#define CLIP(a) iclip(a, min, max) + +/* + * In some places, we use the pattern like this: + * t2 = ((in1 * 1567 - in3 * (3784 - 4096) + 2048) >> 12) - in3; + * even though the reference code might use something like: + * t2 = (in1 * 1567 - in3 * 3784 + 2048) >> 12; + * + * The reason for this is that for 12 bits/component bitstreams (corrupt/ + * invalid ones, but they are codable nonetheless), each coefficient or + * input can be 19(+sign) bits, and therefore if the combination of the + * two multipliers (each 12 bits) is >= 4096, the result of the add/sub + * after the pair of multiplies will exceed the 31+sign bit range. Signed + * integer overflows are UB in C, and we'd like to prevent that. + * + * To workaround this, we invert one of the two coefficients (or, if both are + * multiples of 2, we reduce their magnitude by one bit). It should be noted + * that SIMD implementations do not have to follow this exact behaviour. The + * AV1 spec clearly states that the result of the multiply/add pairs should + * fit in 31+sign bit intermediates, and that streams violating this convention + * are not AV1-compliant. So, as long as we don't trigger UB (which some people + * would consider a security vulnerability), we're fine. So, SIMD can simply + * use the faster implementation, even if that might in some cases result in + * integer overflows, since these are not considered valid AV1 anyway, and in + * e.g. x86 assembly, integer overflows are not considered UB, but they merely + * wrap around. + */ + +static NOINLINE void +inv_dct4_1d_internal_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max, const int tx64) +{ + assert(stride > 0); + const int in0 = c[0 * stride], in1 = c[1 * stride]; + + int t0, t1, t2, t3; + if (tx64) { + t0 = t1 = (in0 * 181 + 128) >> 8; + t2 = (in1 * 1567 + 2048) >> 12; + t3 = (in1 * 3784 + 2048) >> 12; + } else { + const int in2 = c[2 * stride], in3 = c[3 * stride]; + + t0 = ((in0 + in2) * 181 + 128) >> 8; + t1 = ((in0 - in2) * 181 + 128) >> 8; + t2 = ((in1 * 1567 - in3 * (3784 - 4096) + 2048) >> 12) - in3; + t3 = ((in1 * (3784 - 4096) + in3 * 1567 + 2048) >> 12) + in1; + } + + c[0 * stride] = CLIP(t0 + t3); + c[1 * stride] = CLIP(t1 + t2); + c[2 * stride] = CLIP(t1 - t2); + c[3 * stride] = CLIP(t0 - t3); +} + +void dav1d_inv_dct4_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + inv_dct4_1d_internal_c(c, stride, min, max, 0); +} + +static NOINLINE void +inv_dct8_1d_internal_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max, const int tx64) +{ + assert(stride > 0); + inv_dct4_1d_internal_c(c, stride << 1, min, max, tx64); + + const int in1 = c[1 * stride], in3 = c[3 * stride]; + + int t4a, t5a, t6a, t7a; + if (tx64) { + t4a = (in1 * 799 + 2048) >> 12; + t5a = (in3 * -2276 + 2048) >> 12; + t6a = (in3 * 3406 + 2048) >> 12; + t7a = (in1 * 4017 + 2048) >> 12; + } else { + const int in5 = c[5 * stride], in7 = c[7 * stride]; + + t4a = ((in1 * 799 - in7 * (4017 - 4096) + 2048) >> 12) - in7; + t5a = (in5 * 1703 - in3 * 1138 + 1024) >> 11; + t6a = (in5 * 1138 + in3 * 1703 + 1024) >> 11; + t7a = ((in1 * (4017 - 4096) + in7 * 799 + 2048) >> 12) + in1; + } + + const int t4 = CLIP(t4a + t5a); + t5a = CLIP(t4a - t5a); + const int t7 = CLIP(t7a + t6a); + t6a = CLIP(t7a - t6a); + + const int t5 = ((t6a - t5a) * 181 + 128) >> 8; + const int t6 = ((t6a + t5a) * 181 + 128) >> 8; + + const int t0 = c[0 * stride]; + const int t1 = c[2 * stride]; + const int t2 = c[4 * stride]; + const int t3 = c[6 * stride]; + + c[0 * stride] = CLIP(t0 + t7); + c[1 * stride] = CLIP(t1 + t6); + c[2 * stride] = CLIP(t2 + t5); + c[3 * stride] = CLIP(t3 + t4); + c[4 * stride] = CLIP(t3 - t4); + c[5 * stride] = CLIP(t2 - t5); + c[6 * stride] = CLIP(t1 - t6); + c[7 * stride] = CLIP(t0 - t7); +} + +void dav1d_inv_dct8_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + inv_dct8_1d_internal_c(c, stride, min, max, 0); +} + +static NOINLINE void +inv_dct16_1d_internal_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max, int tx64) +{ + assert(stride > 0); + inv_dct8_1d_internal_c(c, stride << 1, min, max, tx64); + + const int in1 = c[1 * stride], in3 = c[3 * stride]; + const int in5 = c[5 * stride], in7 = c[7 * stride]; + + int t8a, t9a, t10a, t11a, t12a, t13a, t14a, t15a; + if (tx64) { + t8a = (in1 * 401 + 2048) >> 12; + t9a = (in7 * -2598 + 2048) >> 12; + t10a = (in5 * 1931 + 2048) >> 12; + t11a = (in3 * -1189 + 2048) >> 12; + t12a = (in3 * 3920 + 2048) >> 12; + t13a = (in5 * 3612 + 2048) >> 12; + t14a = (in7 * 3166 + 2048) >> 12; + t15a = (in1 * 4076 + 2048) >> 12; + } else { + const int in9 = c[ 9 * stride], in11 = c[11 * stride]; + const int in13 = c[13 * stride], in15 = c[15 * stride]; + + t8a = ((in1 * 401 - in15 * (4076 - 4096) + 2048) >> 12) - in15; + t9a = (in9 * 1583 - in7 * 1299 + 1024) >> 11; + t10a = ((in5 * 1931 - in11 * (3612 - 4096) + 2048) >> 12) - in11; + t11a = ((in13 * (3920 - 4096) - in3 * 1189 + 2048) >> 12) + in13; + t12a = ((in13 * 1189 + in3 * (3920 - 4096) + 2048) >> 12) + in3; + t13a = ((in5 * (3612 - 4096) + in11 * 1931 + 2048) >> 12) + in5; + t14a = (in9 * 1299 + in7 * 1583 + 1024) >> 11; + t15a = ((in1 * (4076 - 4096) + in15 * 401 + 2048) >> 12) + in1; + } + + int t8 = CLIP(t8a + t9a); + int t9 = CLIP(t8a - t9a); + int t10 = CLIP(t11a - t10a); + int t11 = CLIP(t11a + t10a); + int t12 = CLIP(t12a + t13a); + int t13 = CLIP(t12a - t13a); + int t14 = CLIP(t15a - t14a); + int t15 = CLIP(t15a + t14a); + + t9a = (( t14 * 1567 - t9 * (3784 - 4096) + 2048) >> 12) - t9; + t14a = (( t14 * (3784 - 4096) + t9 * 1567 + 2048) >> 12) + t14; + t10a = ((-(t13 * (3784 - 4096) + t10 * 1567) + 2048) >> 12) - t13; + t13a = (( t13 * 1567 - t10 * (3784 - 4096) + 2048) >> 12) - t10; + + t8a = CLIP(t8 + t11); + t9 = CLIP(t9a + t10a); + t10 = CLIP(t9a - t10a); + t11a = CLIP(t8 - t11); + t12a = CLIP(t15 - t12); + t13 = CLIP(t14a - t13a); + t14 = CLIP(t14a + t13a); + t15a = CLIP(t15 + t12); + + t10a = ((t13 - t10) * 181 + 128) >> 8; + t13a = ((t13 + t10) * 181 + 128) >> 8; + t11 = ((t12a - t11a) * 181 + 128) >> 8; + t12 = ((t12a + t11a) * 181 + 128) >> 8; + + const int t0 = c[ 0 * stride]; + const int t1 = c[ 2 * stride]; + const int t2 = c[ 4 * stride]; + const int t3 = c[ 6 * stride]; + const int t4 = c[ 8 * stride]; + const int t5 = c[10 * stride]; + const int t6 = c[12 * stride]; + const int t7 = c[14 * stride]; + + c[ 0 * stride] = CLIP(t0 + t15a); + c[ 1 * stride] = CLIP(t1 + t14); + c[ 2 * stride] = CLIP(t2 + t13a); + c[ 3 * stride] = CLIP(t3 + t12); + c[ 4 * stride] = CLIP(t4 + t11); + c[ 5 * stride] = CLIP(t5 + t10a); + c[ 6 * stride] = CLIP(t6 + t9); + c[ 7 * stride] = CLIP(t7 + t8a); + c[ 8 * stride] = CLIP(t7 - t8a); + c[ 9 * stride] = CLIP(t6 - t9); + c[10 * stride] = CLIP(t5 - t10a); + c[11 * stride] = CLIP(t4 - t11); + c[12 * stride] = CLIP(t3 - t12); + c[13 * stride] = CLIP(t2 - t13a); + c[14 * stride] = CLIP(t1 - t14); + c[15 * stride] = CLIP(t0 - t15a); +} + +void dav1d_inv_dct16_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + inv_dct16_1d_internal_c(c, stride, min, max, 0); +} + +static NOINLINE void +inv_dct32_1d_internal_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max, const int tx64) +{ + assert(stride > 0); + inv_dct16_1d_internal_c(c, stride << 1, min, max, tx64); + + const int in1 = c[ 1 * stride], in3 = c[ 3 * stride]; + const int in5 = c[ 5 * stride], in7 = c[ 7 * stride]; + const int in9 = c[ 9 * stride], in11 = c[11 * stride]; + const int in13 = c[13 * stride], in15 = c[15 * stride]; + + int t16a, t17a, t18a, t19a, t20a, t21a, t22a, t23a; + int t24a, t25a, t26a, t27a, t28a, t29a, t30a, t31a; + if (tx64) { + t16a = (in1 * 201 + 2048) >> 12; + t17a = (in15 * -2751 + 2048) >> 12; + t18a = (in9 * 1751 + 2048) >> 12; + t19a = (in7 * -1380 + 2048) >> 12; + t20a = (in5 * 995 + 2048) >> 12; + t21a = (in11 * -2106 + 2048) >> 12; + t22a = (in13 * 2440 + 2048) >> 12; + t23a = (in3 * -601 + 2048) >> 12; + t24a = (in3 * 4052 + 2048) >> 12; + t25a = (in13 * 3290 + 2048) >> 12; + t26a = (in11 * 3513 + 2048) >> 12; + t27a = (in5 * 3973 + 2048) >> 12; + t28a = (in7 * 3857 + 2048) >> 12; + t29a = (in9 * 3703 + 2048) >> 12; + t30a = (in15 * 3035 + 2048) >> 12; + t31a = (in1 * 4091 + 2048) >> 12; + } else { + const int in17 = c[17 * stride], in19 = c[19 * stride]; + const int in21 = c[21 * stride], in23 = c[23 * stride]; + const int in25 = c[25 * stride], in27 = c[27 * stride]; + const int in29 = c[29 * stride], in31 = c[31 * stride]; + + t16a = ((in1 * 201 - in31 * (4091 - 4096) + 2048) >> 12) - in31; + t17a = ((in17 * (3035 - 4096) - in15 * 2751 + 2048) >> 12) + in17; + t18a = ((in9 * 1751 - in23 * (3703 - 4096) + 2048) >> 12) - in23; + t19a = ((in25 * (3857 - 4096) - in7 * 1380 + 2048) >> 12) + in25; + t20a = ((in5 * 995 - in27 * (3973 - 4096) + 2048) >> 12) - in27; + t21a = ((in21 * (3513 - 4096) - in11 * 2106 + 2048) >> 12) + in21; + t22a = (in13 * 1220 - in19 * 1645 + 1024) >> 11; + t23a = ((in29 * (4052 - 4096) - in3 * 601 + 2048) >> 12) + in29; + t24a = ((in29 * 601 + in3 * (4052 - 4096) + 2048) >> 12) + in3; + t25a = (in13 * 1645 + in19 * 1220 + 1024) >> 11; + t26a = ((in21 * 2106 + in11 * (3513 - 4096) + 2048) >> 12) + in11; + t27a = ((in5 * (3973 - 4096) + in27 * 995 + 2048) >> 12) + in5; + t28a = ((in25 * 1380 + in7 * (3857 - 4096) + 2048) >> 12) + in7; + t29a = ((in9 * (3703 - 4096) + in23 * 1751 + 2048) >> 12) + in9; + t30a = ((in17 * 2751 + in15 * (3035 - 4096) + 2048) >> 12) + in15; + t31a = ((in1 * (4091 - 4096) + in31 * 201 + 2048) >> 12) + in1; + } + + int t16 = CLIP(t16a + t17a); + int t17 = CLIP(t16a - t17a); + int t18 = CLIP(t19a - t18a); + int t19 = CLIP(t19a + t18a); + int t20 = CLIP(t20a + t21a); + int t21 = CLIP(t20a - t21a); + int t22 = CLIP(t23a - t22a); + int t23 = CLIP(t23a + t22a); + int t24 = CLIP(t24a + t25a); + int t25 = CLIP(t24a - t25a); + int t26 = CLIP(t27a - t26a); + int t27 = CLIP(t27a + t26a); + int t28 = CLIP(t28a + t29a); + int t29 = CLIP(t28a - t29a); + int t30 = CLIP(t31a - t30a); + int t31 = CLIP(t31a + t30a); + + t17a = (( t30 * 799 - t17 * (4017 - 4096) + 2048) >> 12) - t17; + t30a = (( t30 * (4017 - 4096) + t17 * 799 + 2048) >> 12) + t30; + t18a = ((-(t29 * (4017 - 4096) + t18 * 799) + 2048) >> 12) - t29; + t29a = (( t29 * 799 - t18 * (4017 - 4096) + 2048) >> 12) - t18; + t21a = ( t26 * 1703 - t21 * 1138 + 1024) >> 11; + t26a = ( t26 * 1138 + t21 * 1703 + 1024) >> 11; + t22a = (-(t25 * 1138 + t22 * 1703 ) + 1024) >> 11; + t25a = ( t25 * 1703 - t22 * 1138 + 1024) >> 11; + + t16a = CLIP(t16 + t19); + t17 = CLIP(t17a + t18a); + t18 = CLIP(t17a - t18a); + t19a = CLIP(t16 - t19); + t20a = CLIP(t23 - t20); + t21 = CLIP(t22a - t21a); + t22 = CLIP(t22a + t21a); + t23a = CLIP(t23 + t20); + t24a = CLIP(t24 + t27); + t25 = CLIP(t25a + t26a); + t26 = CLIP(t25a - t26a); + t27a = CLIP(t24 - t27); + t28a = CLIP(t31 - t28); + t29 = CLIP(t30a - t29a); + t30 = CLIP(t30a + t29a); + t31a = CLIP(t31 + t28); + + t18a = (( t29 * 1567 - t18 * (3784 - 4096) + 2048) >> 12) - t18; + t29a = (( t29 * (3784 - 4096) + t18 * 1567 + 2048) >> 12) + t29; + t19 = (( t28a * 1567 - t19a * (3784 - 4096) + 2048) >> 12) - t19a; + t28 = (( t28a * (3784 - 4096) + t19a * 1567 + 2048) >> 12) + t28a; + t20 = ((-(t27a * (3784 - 4096) + t20a * 1567) + 2048) >> 12) - t27a; + t27 = (( t27a * 1567 - t20a * (3784 - 4096) + 2048) >> 12) - t20a; + t21a = ((-(t26 * (3784 - 4096) + t21 * 1567) + 2048) >> 12) - t26; + t26a = (( t26 * 1567 - t21 * (3784 - 4096) + 2048) >> 12) - t21; + + t16 = CLIP(t16a + t23a); + t17a = CLIP(t17 + t22); + t18 = CLIP(t18a + t21a); + t19a = CLIP(t19 + t20); + t20a = CLIP(t19 - t20); + t21 = CLIP(t18a - t21a); + t22a = CLIP(t17 - t22); + t23 = CLIP(t16a - t23a); + t24 = CLIP(t31a - t24a); + t25a = CLIP(t30 - t25); + t26 = CLIP(t29a - t26a); + t27a = CLIP(t28 - t27); + t28a = CLIP(t28 + t27); + t29 = CLIP(t29a + t26a); + t30a = CLIP(t30 + t25); + t31 = CLIP(t31a + t24a); + + t20 = ((t27a - t20a) * 181 + 128) >> 8; + t27 = ((t27a + t20a) * 181 + 128) >> 8; + t21a = ((t26 - t21 ) * 181 + 128) >> 8; + t26a = ((t26 + t21 ) * 181 + 128) >> 8; + t22 = ((t25a - t22a) * 181 + 128) >> 8; + t25 = ((t25a + t22a) * 181 + 128) >> 8; + t23a = ((t24 - t23 ) * 181 + 128) >> 8; + t24a = ((t24 + t23 ) * 181 + 128) >> 8; + + const int t0 = c[ 0 * stride]; + const int t1 = c[ 2 * stride]; + const int t2 = c[ 4 * stride]; + const int t3 = c[ 6 * stride]; + const int t4 = c[ 8 * stride]; + const int t5 = c[10 * stride]; + const int t6 = c[12 * stride]; + const int t7 = c[14 * stride]; + const int t8 = c[16 * stride]; + const int t9 = c[18 * stride]; + const int t10 = c[20 * stride]; + const int t11 = c[22 * stride]; + const int t12 = c[24 * stride]; + const int t13 = c[26 * stride]; + const int t14 = c[28 * stride]; + const int t15 = c[30 * stride]; + + c[ 0 * stride] = CLIP(t0 + t31); + c[ 1 * stride] = CLIP(t1 + t30a); + c[ 2 * stride] = CLIP(t2 + t29); + c[ 3 * stride] = CLIP(t3 + t28a); + c[ 4 * stride] = CLIP(t4 + t27); + c[ 5 * stride] = CLIP(t5 + t26a); + c[ 6 * stride] = CLIP(t6 + t25); + c[ 7 * stride] = CLIP(t7 + t24a); + c[ 8 * stride] = CLIP(t8 + t23a); + c[ 9 * stride] = CLIP(t9 + t22); + c[10 * stride] = CLIP(t10 + t21a); + c[11 * stride] = CLIP(t11 + t20); + c[12 * stride] = CLIP(t12 + t19a); + c[13 * stride] = CLIP(t13 + t18); + c[14 * stride] = CLIP(t14 + t17a); + c[15 * stride] = CLIP(t15 + t16); + c[16 * stride] = CLIP(t15 - t16); + c[17 * stride] = CLIP(t14 - t17a); + c[18 * stride] = CLIP(t13 - t18); + c[19 * stride] = CLIP(t12 - t19a); + c[20 * stride] = CLIP(t11 - t20); + c[21 * stride] = CLIP(t10 - t21a); + c[22 * stride] = CLIP(t9 - t22); + c[23 * stride] = CLIP(t8 - t23a); + c[24 * stride] = CLIP(t7 - t24a); + c[25 * stride] = CLIP(t6 - t25); + c[26 * stride] = CLIP(t5 - t26a); + c[27 * stride] = CLIP(t4 - t27); + c[28 * stride] = CLIP(t3 - t28a); + c[29 * stride] = CLIP(t2 - t29); + c[30 * stride] = CLIP(t1 - t30a); + c[31 * stride] = CLIP(t0 - t31); +} + +void dav1d_inv_dct32_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + inv_dct32_1d_internal_c(c, stride, min, max, 0); +} + +void dav1d_inv_dct64_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + assert(stride > 0); + inv_dct32_1d_internal_c(c, stride << 1, min, max, 1); + + const int in1 = c[ 1 * stride], in3 = c[ 3 * stride]; + const int in5 = c[ 5 * stride], in7 = c[ 7 * stride]; + const int in9 = c[ 9 * stride], in11 = c[11 * stride]; + const int in13 = c[13 * stride], in15 = c[15 * stride]; + const int in17 = c[17 * stride], in19 = c[19 * stride]; + const int in21 = c[21 * stride], in23 = c[23 * stride]; + const int in25 = c[25 * stride], in27 = c[27 * stride]; + const int in29 = c[29 * stride], in31 = c[31 * stride]; + + int t32a = (in1 * 101 + 2048) >> 12; + int t33a = (in31 * -2824 + 2048) >> 12; + int t34a = (in17 * 1660 + 2048) >> 12; + int t35a = (in15 * -1474 + 2048) >> 12; + int t36a = (in9 * 897 + 2048) >> 12; + int t37a = (in23 * -2191 + 2048) >> 12; + int t38a = (in25 * 2359 + 2048) >> 12; + int t39a = (in7 * -700 + 2048) >> 12; + int t40a = (in5 * 501 + 2048) >> 12; + int t41a = (in27 * -2520 + 2048) >> 12; + int t42a = (in21 * 2019 + 2048) >> 12; + int t43a = (in11 * -1092 + 2048) >> 12; + int t44a = (in13 * 1285 + 2048) >> 12; + int t45a = (in19 * -1842 + 2048) >> 12; + int t46a = (in29 * 2675 + 2048) >> 12; + int t47a = (in3 * -301 + 2048) >> 12; + int t48a = (in3 * 4085 + 2048) >> 12; + int t49a = (in29 * 3102 + 2048) >> 12; + int t50a = (in19 * 3659 + 2048) >> 12; + int t51a = (in13 * 3889 + 2048) >> 12; + int t52a = (in11 * 3948 + 2048) >> 12; + int t53a = (in21 * 3564 + 2048) >> 12; + int t54a = (in27 * 3229 + 2048) >> 12; + int t55a = (in5 * 4065 + 2048) >> 12; + int t56a = (in7 * 4036 + 2048) >> 12; + int t57a = (in25 * 3349 + 2048) >> 12; + int t58a = (in23 * 3461 + 2048) >> 12; + int t59a = (in9 * 3996 + 2048) >> 12; + int t60a = (in15 * 3822 + 2048) >> 12; + int t61a = (in17 * 3745 + 2048) >> 12; + int t62a = (in31 * 2967 + 2048) >> 12; + int t63a = (in1 * 4095 + 2048) >> 12; + + int t32 = CLIP(t32a + t33a); + int t33 = CLIP(t32a - t33a); + int t34 = CLIP(t35a - t34a); + int t35 = CLIP(t35a + t34a); + int t36 = CLIP(t36a + t37a); + int t37 = CLIP(t36a - t37a); + int t38 = CLIP(t39a - t38a); + int t39 = CLIP(t39a + t38a); + int t40 = CLIP(t40a + t41a); + int t41 = CLIP(t40a - t41a); + int t42 = CLIP(t43a - t42a); + int t43 = CLIP(t43a + t42a); + int t44 = CLIP(t44a + t45a); + int t45 = CLIP(t44a - t45a); + int t46 = CLIP(t47a - t46a); + int t47 = CLIP(t47a + t46a); + int t48 = CLIP(t48a + t49a); + int t49 = CLIP(t48a - t49a); + int t50 = CLIP(t51a - t50a); + int t51 = CLIP(t51a + t50a); + int t52 = CLIP(t52a + t53a); + int t53 = CLIP(t52a - t53a); + int t54 = CLIP(t55a - t54a); + int t55 = CLIP(t55a + t54a); + int t56 = CLIP(t56a + t57a); + int t57 = CLIP(t56a - t57a); + int t58 = CLIP(t59a - t58a); + int t59 = CLIP(t59a + t58a); + int t60 = CLIP(t60a + t61a); + int t61 = CLIP(t60a - t61a); + int t62 = CLIP(t63a - t62a); + int t63 = CLIP(t63a + t62a); + + t33a = ((t33 * (4096 - 4076) + t62 * 401 + 2048) >> 12) - t33; + t34a = ((t34 * -401 + t61 * (4096 - 4076) + 2048) >> 12) - t61; + t37a = (t37 * -1299 + t58 * 1583 + 1024) >> 11; + t38a = (t38 * -1583 + t57 * -1299 + 1024) >> 11; + t41a = ((t41 * (4096 - 3612) + t54 * 1931 + 2048) >> 12) - t41; + t42a = ((t42 * -1931 + t53 * (4096 - 3612) + 2048) >> 12) - t53; + t45a = ((t45 * -1189 + t50 * (3920 - 4096) + 2048) >> 12) + t50; + t46a = ((t46 * (4096 - 3920) + t49 * -1189 + 2048) >> 12) - t46; + t49a = ((t46 * -1189 + t49 * (3920 - 4096) + 2048) >> 12) + t49; + t50a = ((t45 * (3920 - 4096) + t50 * 1189 + 2048) >> 12) + t45; + t53a = ((t42 * (4096 - 3612) + t53 * 1931 + 2048) >> 12) - t42; + t54a = ((t41 * 1931 + t54 * (3612 - 4096) + 2048) >> 12) + t54; + t57a = (t38 * -1299 + t57 * 1583 + 1024) >> 11; + t58a = (t37 * 1583 + t58 * 1299 + 1024) >> 11; + t61a = ((t34 * (4096 - 4076) + t61 * 401 + 2048) >> 12) - t34; + t62a = ((t33 * 401 + t62 * (4076 - 4096) + 2048) >> 12) + t62; + + t32a = CLIP(t32 + t35); + t33 = CLIP(t33a + t34a); + t34 = CLIP(t33a - t34a); + t35a = CLIP(t32 - t35); + t36a = CLIP(t39 - t36); + t37 = CLIP(t38a - t37a); + t38 = CLIP(t38a + t37a); + t39a = CLIP(t39 + t36); + t40a = CLIP(t40 + t43); + t41 = CLIP(t41a + t42a); + t42 = CLIP(t41a - t42a); + t43a = CLIP(t40 - t43); + t44a = CLIP(t47 - t44); + t45 = CLIP(t46a - t45a); + t46 = CLIP(t46a + t45a); + t47a = CLIP(t47 + t44); + t48a = CLIP(t48 + t51); + t49 = CLIP(t49a + t50a); + t50 = CLIP(t49a - t50a); + t51a = CLIP(t48 - t51); + t52a = CLIP(t55 - t52); + t53 = CLIP(t54a - t53a); + t54 = CLIP(t54a + t53a); + t55a = CLIP(t55 + t52); + t56a = CLIP(t56 + t59); + t57 = CLIP(t57a + t58a); + t58 = CLIP(t57a - t58a); + t59a = CLIP(t56 - t59); + t60a = CLIP(t63 - t60); + t61 = CLIP(t62a - t61a); + t62 = CLIP(t62a + t61a); + t63a = CLIP(t63 + t60); + + t34a = ((t34 * (4096 - 4017) + t61 * 799 + 2048) >> 12) - t34; + t35 = ((t35a * (4096 - 4017) + t60a * 799 + 2048) >> 12) - t35a; + t36 = ((t36a * -799 + t59a * (4096 - 4017) + 2048) >> 12) - t59a; + t37a = ((t37 * -799 + t58 * (4096 - 4017) + 2048) >> 12) - t58; + t42a = (t42 * -1138 + t53 * 1703 + 1024) >> 11; + t43 = (t43a * -1138 + t52a * 1703 + 1024) >> 11; + t44 = (t44a * -1703 + t51a * -1138 + 1024) >> 11; + t45a = (t45 * -1703 + t50 * -1138 + 1024) >> 11; + t50a = (t45 * -1138 + t50 * 1703 + 1024) >> 11; + t51 = (t44a * -1138 + t51a * 1703 + 1024) >> 11; + t52 = (t43a * 1703 + t52a * 1138 + 1024) >> 11; + t53a = (t42 * 1703 + t53 * 1138 + 1024) >> 11; + t58a = ((t37 * (4096 - 4017) + t58 * 799 + 2048) >> 12) - t37; + t59 = ((t36a * (4096 - 4017) + t59a * 799 + 2048) >> 12) - t36a; + t60 = ((t35a * 799 + t60a * (4017 - 4096) + 2048) >> 12) + t60a; + t61a = ((t34 * 799 + t61 * (4017 - 4096) + 2048) >> 12) + t61; + + t32 = CLIP(t32a + t39a); + t33a = CLIP(t33 + t38); + t34 = CLIP(t34a + t37a); + t35a = CLIP(t35 + t36); + t36a = CLIP(t35 - t36); + t37 = CLIP(t34a - t37a); + t38a = CLIP(t33 - t38); + t39 = CLIP(t32a - t39a); + t40 = CLIP(t47a - t40a); + t41a = CLIP(t46 - t41); + t42 = CLIP(t45a - t42a); + t43a = CLIP(t44 - t43); + t44a = CLIP(t44 + t43); + t45 = CLIP(t45a + t42a); + t46a = CLIP(t46 + t41); + t47 = CLIP(t47a + t40a); + t48 = CLIP(t48a + t55a); + t49a = CLIP(t49 + t54); + t50 = CLIP(t50a + t53a); + t51a = CLIP(t51 + t52); + t52a = CLIP(t51 - t52); + t53 = CLIP(t50a - t53a); + t54a = CLIP(t49 - t54); + t55 = CLIP(t48a - t55a); + t56 = CLIP(t63a - t56a); + t57a = CLIP(t62 - t57); + t58 = CLIP(t61a - t58a); + t59a = CLIP(t60 - t59); + t60a = CLIP(t60 + t59); + t61 = CLIP(t61a + t58a); + t62a = CLIP(t62 + t57); + t63 = CLIP(t63a + t56a); + + t36 = ((t36a * (4096 - 3784) + t59a * 1567 + 2048) >> 12) - t36a; + t37a = ((t37 * (4096 - 3784) + t58 * 1567 + 2048) >> 12) - t37; + t38 = ((t38a * (4096 - 3784) + t57a * 1567 + 2048) >> 12) - t38a; + t39a = ((t39 * (4096 - 3784) + t56 * 1567 + 2048) >> 12) - t39; + t40a = ((t40 * -1567 + t55 * (4096 - 3784) + 2048) >> 12) - t55; + t41 = ((t41a * -1567 + t54a * (4096 - 3784) + 2048) >> 12) - t54a; + t42a = ((t42 * -1567 + t53 * (4096 - 3784) + 2048) >> 12) - t53; + t43 = ((t43a * -1567 + t52a * (4096 - 3784) + 2048) >> 12) - t52a; + t52 = ((t43a * (4096 - 3784) + t52a * 1567 + 2048) >> 12) - t43a; + t53a = ((t42 * (4096 - 3784) + t53 * 1567 + 2048) >> 12) - t42; + t54 = ((t41a * (4096 - 3784) + t54a * 1567 + 2048) >> 12) - t41a; + t55a = ((t40 * (4096 - 3784) + t55 * 1567 + 2048) >> 12) - t40; + t56a = ((t39 * 1567 + t56 * (3784 - 4096) + 2048) >> 12) + t56; + t57 = ((t38a * 1567 + t57a * (3784 - 4096) + 2048) >> 12) + t57a; + t58a = ((t37 * 1567 + t58 * (3784 - 4096) + 2048) >> 12) + t58; + t59 = ((t36a * 1567 + t59a * (3784 - 4096) + 2048) >> 12) + t59a; + + t32a = CLIP(t32 + t47); + t33 = CLIP(t33a + t46a); + t34a = CLIP(t34 + t45); + t35 = CLIP(t35a + t44a); + t36a = CLIP(t36 + t43); + t37 = CLIP(t37a + t42a); + t38a = CLIP(t38 + t41); + t39 = CLIP(t39a + t40a); + t40 = CLIP(t39a - t40a); + t41a = CLIP(t38 - t41); + t42 = CLIP(t37a - t42a); + t43a = CLIP(t36 - t43); + t44 = CLIP(t35a - t44a); + t45a = CLIP(t34 - t45); + t46 = CLIP(t33a - t46a); + t47a = CLIP(t32 - t47); + t48a = CLIP(t63 - t48); + t49 = CLIP(t62a - t49a); + t50a = CLIP(t61 - t50); + t51 = CLIP(t60a - t51a); + t52a = CLIP(t59 - t52); + t53 = CLIP(t58a - t53a); + t54a = CLIP(t57 - t54); + t55 = CLIP(t56a - t55a); + t56 = CLIP(t56a + t55a); + t57a = CLIP(t57 + t54); + t58 = CLIP(t58a + t53a); + t59a = CLIP(t59 + t52); + t60 = CLIP(t60a + t51a); + t61a = CLIP(t61 + t50); + t62 = CLIP(t62a + t49a); + t63a = CLIP(t63 + t48); + + t40a = ((t55 - t40 ) * 181 + 128) >> 8; + t41 = ((t54a - t41a) * 181 + 128) >> 8; + t42a = ((t53 - t42 ) * 181 + 128) >> 8; + t43 = ((t52a - t43a) * 181 + 128) >> 8; + t44a = ((t51 - t44 ) * 181 + 128) >> 8; + t45 = ((t50a - t45a) * 181 + 128) >> 8; + t46a = ((t49 - t46 ) * 181 + 128) >> 8; + t47 = ((t48a - t47a) * 181 + 128) >> 8; + t48 = ((t47a + t48a) * 181 + 128) >> 8; + t49a = ((t46 + t49 ) * 181 + 128) >> 8; + t50 = ((t45a + t50a) * 181 + 128) >> 8; + t51a = ((t44 + t51 ) * 181 + 128) >> 8; + t52 = ((t43a + t52a) * 181 + 128) >> 8; + t53a = ((t42 + t53 ) * 181 + 128) >> 8; + t54 = ((t41a + t54a) * 181 + 128) >> 8; + t55a = ((t40 + t55 ) * 181 + 128) >> 8; + + const int t0 = c[ 0 * stride]; + const int t1 = c[ 2 * stride]; + const int t2 = c[ 4 * stride]; + const int t3 = c[ 6 * stride]; + const int t4 = c[ 8 * stride]; + const int t5 = c[10 * stride]; + const int t6 = c[12 * stride]; + const int t7 = c[14 * stride]; + const int t8 = c[16 * stride]; + const int t9 = c[18 * stride]; + const int t10 = c[20 * stride]; + const int t11 = c[22 * stride]; + const int t12 = c[24 * stride]; + const int t13 = c[26 * stride]; + const int t14 = c[28 * stride]; + const int t15 = c[30 * stride]; + const int t16 = c[32 * stride]; + const int t17 = c[34 * stride]; + const int t18 = c[36 * stride]; + const int t19 = c[38 * stride]; + const int t20 = c[40 * stride]; + const int t21 = c[42 * stride]; + const int t22 = c[44 * stride]; + const int t23 = c[46 * stride]; + const int t24 = c[48 * stride]; + const int t25 = c[50 * stride]; + const int t26 = c[52 * stride]; + const int t27 = c[54 * stride]; + const int t28 = c[56 * stride]; + const int t29 = c[58 * stride]; + const int t30 = c[60 * stride]; + const int t31 = c[62 * stride]; + + c[ 0 * stride] = CLIP(t0 + t63a); + c[ 1 * stride] = CLIP(t1 + t62); + c[ 2 * stride] = CLIP(t2 + t61a); + c[ 3 * stride] = CLIP(t3 + t60); + c[ 4 * stride] = CLIP(t4 + t59a); + c[ 5 * stride] = CLIP(t5 + t58); + c[ 6 * stride] = CLIP(t6 + t57a); + c[ 7 * stride] = CLIP(t7 + t56); + c[ 8 * stride] = CLIP(t8 + t55a); + c[ 9 * stride] = CLIP(t9 + t54); + c[10 * stride] = CLIP(t10 + t53a); + c[11 * stride] = CLIP(t11 + t52); + c[12 * stride] = CLIP(t12 + t51a); + c[13 * stride] = CLIP(t13 + t50); + c[14 * stride] = CLIP(t14 + t49a); + c[15 * stride] = CLIP(t15 + t48); + c[16 * stride] = CLIP(t16 + t47); + c[17 * stride] = CLIP(t17 + t46a); + c[18 * stride] = CLIP(t18 + t45); + c[19 * stride] = CLIP(t19 + t44a); + c[20 * stride] = CLIP(t20 + t43); + c[21 * stride] = CLIP(t21 + t42a); + c[22 * stride] = CLIP(t22 + t41); + c[23 * stride] = CLIP(t23 + t40a); + c[24 * stride] = CLIP(t24 + t39); + c[25 * stride] = CLIP(t25 + t38a); + c[26 * stride] = CLIP(t26 + t37); + c[27 * stride] = CLIP(t27 + t36a); + c[28 * stride] = CLIP(t28 + t35); + c[29 * stride] = CLIP(t29 + t34a); + c[30 * stride] = CLIP(t30 + t33); + c[31 * stride] = CLIP(t31 + t32a); + c[32 * stride] = CLIP(t31 - t32a); + c[33 * stride] = CLIP(t30 - t33); + c[34 * stride] = CLIP(t29 - t34a); + c[35 * stride] = CLIP(t28 - t35); + c[36 * stride] = CLIP(t27 - t36a); + c[37 * stride] = CLIP(t26 - t37); + c[38 * stride] = CLIP(t25 - t38a); + c[39 * stride] = CLIP(t24 - t39); + c[40 * stride] = CLIP(t23 - t40a); + c[41 * stride] = CLIP(t22 - t41); + c[42 * stride] = CLIP(t21 - t42a); + c[43 * stride] = CLIP(t20 - t43); + c[44 * stride] = CLIP(t19 - t44a); + c[45 * stride] = CLIP(t18 - t45); + c[46 * stride] = CLIP(t17 - t46a); + c[47 * stride] = CLIP(t16 - t47); + c[48 * stride] = CLIP(t15 - t48); + c[49 * stride] = CLIP(t14 - t49a); + c[50 * stride] = CLIP(t13 - t50); + c[51 * stride] = CLIP(t12 - t51a); + c[52 * stride] = CLIP(t11 - t52); + c[53 * stride] = CLIP(t10 - t53a); + c[54 * stride] = CLIP(t9 - t54); + c[55 * stride] = CLIP(t8 - t55a); + c[56 * stride] = CLIP(t7 - t56); + c[57 * stride] = CLIP(t6 - t57a); + c[58 * stride] = CLIP(t5 - t58); + c[59 * stride] = CLIP(t4 - t59a); + c[60 * stride] = CLIP(t3 - t60); + c[61 * stride] = CLIP(t2 - t61a); + c[62 * stride] = CLIP(t1 - t62); + c[63 * stride] = CLIP(t0 - t63a); +} + +static NOINLINE void +inv_adst4_1d_internal_c(const int32_t *const in, const ptrdiff_t in_s, + const int min, const int max, + int32_t *const out, const ptrdiff_t out_s) +{ + assert(in_s > 0 && out_s != 0); + const int in0 = in[0 * in_s], in1 = in[1 * in_s]; + const int in2 = in[2 * in_s], in3 = in[3 * in_s]; + + out[0 * out_s] = (( 1321 * in0 + (3803 - 4096) * in2 + + (2482 - 4096) * in3 + (3344 - 4096) * in1 + 2048) >> 12) + + in2 + in3 + in1; + out[1 * out_s] = (((2482 - 4096) * in0 - 1321 * in2 - + (3803 - 4096) * in3 + (3344 - 4096) * in1 + 2048) >> 12) + + in0 - in3 + in1; + out[2 * out_s] = (209 * (in0 - in2 + in3) + 128) >> 8; + out[3 * out_s] = (((3803 - 4096) * in0 + (2482 - 4096) * in2 - + 1321 * in3 - (3344 - 4096) * in1 + 2048) >> 12) + + in0 + in2 - in1; +} + +static NOINLINE void +inv_adst8_1d_internal_c(const int32_t *const in, const ptrdiff_t in_s, + const int min, const int max, + int32_t *const out, const ptrdiff_t out_s) +{ + assert(in_s > 0 && out_s != 0); + 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 t0a = (((4076 - 4096) * in7 + 401 * in0 + 2048) >> 12) + in7; + const int t1a = (( 401 * in7 - (4076 - 4096) * in0 + 2048) >> 12) - in0; + const int t2a = (((3612 - 4096) * in5 + 1931 * in2 + 2048) >> 12) + in5; + const int t3a = (( 1931 * in5 - (3612 - 4096) * in2 + 2048) >> 12) - in2; + int t4a = ( 1299 * in3 + 1583 * in4 + 1024) >> 11; + int t5a = ( 1583 * in3 - 1299 * in4 + 1024) >> 11; + int t6a = (( 1189 * in1 + (3920 - 4096) * in6 + 2048) >> 12) + in6; + int t7a = (((3920 - 4096) * in1 - 1189 * in6 + 2048) >> 12) + in1; + + const int t0 = CLIP(t0a + t4a); + const int t1 = CLIP(t1a + t5a); + int t2 = CLIP(t2a + t6a); + int t3 = CLIP(t3a + t7a); + const int t4 = CLIP(t0a - t4a); + const int t5 = CLIP(t1a - t5a); + int t6 = CLIP(t2a - t6a); + int t7 = CLIP(t3a - t7a); + + t4a = (((3784 - 4096) * t4 + 1567 * t5 + 2048) >> 12) + t4; + t5a = (( 1567 * t4 - (3784 - 4096) * t5 + 2048) >> 12) - t5; + t6a = (((3784 - 4096) * t7 - 1567 * t6 + 2048) >> 12) + t7; + t7a = (( 1567 * t7 + (3784 - 4096) * t6 + 2048) >> 12) + t6; + + out[0 * out_s] = CLIP(t0 + t2 ); + out[7 * out_s] = -CLIP(t1 + t3 ); + t2 = CLIP(t0 - t2 ); + t3 = CLIP(t1 - t3 ); + out[1 * out_s] = -CLIP(t4a + t6a); + out[6 * out_s] = CLIP(t5a + t7a); + t6 = CLIP(t4a - t6a); + t7 = CLIP(t5a - t7a); + + out[3 * out_s] = -(((t2 + t3) * 181 + 128) >> 8); + out[4 * out_s] = ((t2 - t3) * 181 + 128) >> 8; + out[2 * out_s] = ((t6 + t7) * 181 + 128) >> 8; + out[5 * out_s] = -(((t6 - t7) * 181 + 128) >> 8); +} + +static NOINLINE void +inv_adst16_1d_internal_c(const int32_t *const in, const ptrdiff_t in_s, + const int min, const int max, + int32_t *const out, const ptrdiff_t out_s) +{ + assert(in_s > 0 && out_s != 0); + 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 - 4096) + in0 * 201 + 2048) >> 12) + in15; + int t1 = ((in15 * 201 - in0 * (4091 - 4096) + 2048) >> 12) - in0; + int t2 = ((in13 * (3973 - 4096) + in2 * 995 + 2048) >> 12) + in13; + int t3 = ((in13 * 995 - in2 * (3973 - 4096) + 2048) >> 12) - in2; + int t4 = ((in11 * (3703 - 4096) + in4 * 1751 + 2048) >> 12) + in11; + int t5 = ((in11 * 1751 - in4 * (3703 - 4096) + 2048) >> 12) - in4; + int t6 = (in9 * 1645 + in6 * 1220 + 1024) >> 11; + int t7 = (in9 * 1220 - in6 * 1645 + 1024) >> 11; + int t8 = ((in7 * 2751 + in8 * (3035 - 4096) + 2048) >> 12) + in8; + int t9 = ((in7 * (3035 - 4096) - in8 * 2751 + 2048) >> 12) + in7; + int t10 = ((in5 * 2106 + in10 * (3513 - 4096) + 2048) >> 12) + in10; + int t11 = ((in5 * (3513 - 4096) - in10 * 2106 + 2048) >> 12) + in5; + int t12 = ((in3 * 1380 + in12 * (3857 - 4096) + 2048) >> 12) + in12; + int t13 = ((in3 * (3857 - 4096) - in12 * 1380 + 2048) >> 12) + in3; + int t14 = ((in1 * 601 + in14 * (4052 - 4096) + 2048) >> 12) + in14; + int t15 = ((in1 * (4052 - 4096) - in14 * 601 + 2048) >> 12) + in1; + + int t0a = CLIP(t0 + t8 ); + int t1a = CLIP(t1 + t9 ); + int t2a = CLIP(t2 + t10); + int t3a = CLIP(t3 + t11); + int t4a = CLIP(t4 + t12); + int t5a = CLIP(t5 + t13); + int t6a = CLIP(t6 + t14); + int t7a = CLIP(t7 + t15); + int t8a = CLIP(t0 - t8 ); + int t9a = CLIP(t1 - t9 ); + int t10a = CLIP(t2 - t10); + int t11a = CLIP(t3 - t11); + int t12a = CLIP(t4 - t12); + int t13a = CLIP(t5 - t13); + int t14a = CLIP(t6 - t14); + int t15a = CLIP(t7 - t15); + + t8 = ((t8a * (4017 - 4096) + t9a * 799 + 2048) >> 12) + t8a; + t9 = ((t8a * 799 - t9a * (4017 - 4096) + 2048) >> 12) - t9a; + t10 = ((t10a * 2276 + t11a * (3406 - 4096) + 2048) >> 12) + t11a; + t11 = ((t10a * (3406 - 4096) - t11a * 2276 + 2048) >> 12) + t10a; + t12 = ((t13a * (4017 - 4096) - t12a * 799 + 2048) >> 12) + t13a; + t13 = ((t13a * 799 + t12a * (4017 - 4096) + 2048) >> 12) + t12a; + t14 = ((t15a * 2276 - t14a * (3406 - 4096) + 2048) >> 12) - t14a; + t15 = ((t15a * (3406 - 4096) + t14a * 2276 + 2048) >> 12) + t15a; + + t0 = CLIP(t0a + t4a); + t1 = CLIP(t1a + t5a); + t2 = CLIP(t2a + t6a); + t3 = CLIP(t3a + t7a); + t4 = CLIP(t0a - t4a); + t5 = CLIP(t1a - t5a); + t6 = CLIP(t2a - t6a); + t7 = CLIP(t3a - t7a); + t8a = CLIP(t8 + t12); + t9a = CLIP(t9 + t13); + t10a = CLIP(t10 + t14); + t11a = CLIP(t11 + t15); + t12a = CLIP(t8 - t12); + t13a = CLIP(t9 - t13); + t14a = CLIP(t10 - t14); + t15a = CLIP(t11 - t15); + + t4a = ((t4 * (3784 - 4096) + t5 * 1567 + 2048) >> 12) + t4; + t5a = ((t4 * 1567 - t5 * (3784 - 4096) + 2048) >> 12) - t5; + t6a = ((t7 * (3784 - 4096) - t6 * 1567 + 2048) >> 12) + t7; + t7a = ((t7 * 1567 + t6 * (3784 - 4096) + 2048) >> 12) + t6; + t12 = ((t12a * (3784 - 4096) + t13a * 1567 + 2048) >> 12) + t12a; + t13 = ((t12a * 1567 - t13a * (3784 - 4096) + 2048) >> 12) - t13a; + t14 = ((t15a * (3784 - 4096) - t14a * 1567 + 2048) >> 12) + t15a; + t15 = ((t15a * 1567 + t14a * (3784 - 4096) + 2048) >> 12) + t14a; + + out[ 0 * out_s] = CLIP(t0 + t2 ); + out[15 * out_s] = -CLIP(t1 + t3 ); + t2a = CLIP(t0 - t2 ); + t3a = CLIP(t1 - t3 ); + out[ 3 * out_s] = -CLIP(t4a + t6a ); + out[12 * out_s] = CLIP(t5a + t7a ); + t6 = CLIP(t4a - t6a ); + t7 = CLIP(t5a - t7a ); + out[ 1 * out_s] = -CLIP(t8a + t10a); + out[14 * out_s] = CLIP(t9a + t11a); + t10 = CLIP(t8a - t10a); + t11 = CLIP(t9a - t11a); + out[ 2 * out_s] = CLIP(t12 + t14 ); + out[13 * out_s] = -CLIP(t13 + t15 ); + t14a = CLIP(t12 - t14 ); + t15a = CLIP(t13 - t15 ); + + out[ 7 * out_s] = -(((t2a + t3a) * 181 + 128) >> 8); + out[ 8 * out_s] = ((t2a - t3a) * 181 + 128) >> 8; + out[ 4 * out_s] = ((t6 + t7) * 181 + 128) >> 8; + out[11 * out_s] = -(((t6 - t7) * 181 + 128) >> 8); + out[ 6 * out_s] = ((t10 + t11) * 181 + 128) >> 8; + out[ 9 * out_s] = -(((t10 - t11) * 181 + 128) >> 8); + out[ 5 * out_s] = -(((t14a + t15a) * 181 + 128) >> 8); + out[10 * out_s] = ((t14a - t15a) * 181 + 128) >> 8; +} + +#define inv_adst_1d(sz) \ +void dav1d_inv_adst##sz##_1d_c(int32_t *const c, const ptrdiff_t stride, \ + const int min, const int max) \ +{ \ + inv_adst##sz##_1d_internal_c(c, stride, min, max, c, stride); \ +} \ +void dav1d_inv_flipadst##sz##_1d_c(int32_t *const c, const ptrdiff_t stride, \ + const int min, const int max) \ +{ \ + inv_adst##sz##_1d_internal_c(c, stride, min, max, \ + &c[(sz - 1) * stride], -stride); \ +} + +inv_adst_1d( 4) +inv_adst_1d( 8) +inv_adst_1d(16) + +#undef inv_adst_1d + +void dav1d_inv_identity4_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + assert(stride > 0); + for (int i = 0; i < 4; i++) { + const int in = c[stride * i]; + c[stride * i] = in + ((in * 1697 + 2048) >> 12); + } +} + +void dav1d_inv_identity8_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + assert(stride > 0); + for (int i = 0; i < 8; i++) + c[stride * i] *= 2; +} + +void dav1d_inv_identity16_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + assert(stride > 0); + for (int i = 0; i < 16; i++) { + const int in = c[stride * i]; + c[stride * i] = 2 * in + ((in * 1697 + 1024) >> 11); + } +} + +void dav1d_inv_identity32_1d_c(int32_t *const c, const ptrdiff_t stride, + const int min, const int max) +{ + assert(stride > 0); + for (int i = 0; i < 32; i++) + c[stride * i] *= 4; +} + +void dav1d_inv_wht4_1d_c(int32_t *const c, const ptrdiff_t stride) { + assert(stride > 0); + const int in0 = c[0 * stride], in1 = c[1 * stride]; + const int in2 = c[2 * stride], in3 = c[3 * stride]; + + 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; + + c[0 * stride] = t0 - t3; + c[1 * stride] = t3; + c[2 * stride] = t1; + c[3 * stride] = t2 + t1; +} |