/* * 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 <stdlib.h> #include "common/attributes.h"#include "common/intops.h" #include "src/loopfilter.h" static NOINLINE voidloop_filter(pixel *dst, int E, int I, int H,            const ptrdiff_t stridea, const ptrdiff_t strideb, const int wd            HIGHBD_DECL_SUFFIX){    const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8;    const int F = 1 << bitdepth_min_8;    E <<= bitdepth_min_8;    I <<= bitdepth_min_8;    H <<= bitdepth_min_8;     for (int i = 0; i < 4; i++, dst += stridea) {        int p6, p5, p4, p3, p2;        int p1 = dst[strideb * -2], p0 = dst[strideb * -1];        int q0 = dst[strideb * +0], q1 = dst[strideb * +1];        int q2, q3, q4, q5, q6;        int fm, flat8out, flat8in;         fm = abs(p1 - p0) <= I && abs(q1 - q0) <= I &&             abs(p0 - q0) * 2 + (abs(p1 - q1) >> 1) <= E;         if (wd > 4) {            p2 = dst[strideb * -3];            q2 = dst[strideb * +2];             fm &= abs(p2 - p1) <= I && abs(q2 - q1) <= I;             if (wd > 6) {                p3 = dst[strideb * -4];                q3 = dst[strideb * +3];                 fm &= abs(p3 - p2) <= I && abs(q3 - q2) <= I;            }        }        if (!fm) continue;         if (wd >= 16) {            p6 = dst[strideb * -7];            p5 = dst[strideb * -6];            p4 = dst[strideb * -5];            q4 = dst[strideb * +4];            q5 = dst[strideb * +5];            q6 = dst[strideb * +6];             flat8out = abs(p6 - p0) <= F && abs(p5 - p0) <= F &&                       abs(p4 - p0) <= F && abs(q4 - q0) <= F &&                       abs(q5 - q0) <= F && abs(q6 - q0) <= F;        }         if (wd >= 6)            flat8in = abs(p2 - p0) <= F && abs(p1 - p0) <= F &&                      abs(q1 - q0) <= F && abs(q2 - q0) <= F;         if (wd >= 8)            flat8in &= abs(p3 - p0) <= F && abs(q3 - q0) <= F;         if (wd >= 16 && (flat8out & flat8in)) {            dst[strideb * -6] = (p6 + p6 + p6 + p6 + p6 + p6 * 2 + p5 * 2 +                                 p4 * 2 + p3 + p2 + p1 + p0 + q0 + 8) >> 4;            dst[strideb * -5] = (p6 + p6 + p6 + p6 + p6 + p5 * 2 + p4 * 2 +                                 p3 * 2 + p2 + p1 + p0 + q0 + q1 + 8) >> 4;            dst[strideb * -4] = (p6 + p6 + p6 + p6 + p5 + p4 * 2 + p3 * 2 +                                 p2 * 2 + p1 + p0 + q0 + q1 + q2 + 8) >> 4;            dst[strideb * -3] = (p6 + p6 + p6 + p5 + p4 + p3 * 2 + p2 * 2 +                                 p1 * 2 + p0 + q0 + q1 + q2 + q3 + 8) >> 4;            dst[strideb * -2] = (p6 + p6 + p5 + p4 + p3 + p2 * 2 + p1 * 2 +                                 p0 * 2 + q0 + q1 + q2 + q3 + q4 + 8) >> 4;            dst[strideb * -1] = (p6 + p5 + p4 + p3 + p2 + p1 * 2 + p0 * 2 +                                 q0 * 2 + q1 + q2 + q3 + q4 + q5 + 8) >> 4;            dst[strideb * +0] = (p5 + p4 + p3 + p2 + p1 + p0 * 2 + q0 * 2 +                                 q1 * 2 + q2 + q3 + q4 + q5 + q6 + 8) >> 4;            dst[strideb * +1] = (p4 + p3 + p2 + p1 + p0 + q0 * 2 + q1 * 2 +                                 q2 * 2 + q3 + q4 + q5 + q6 + q6 + 8) >> 4;            dst[strideb * +2] = (p3 + p2 + p1 + p0 + q0 + q1 * 2 + q2 * 2 +                                 q3 * 2 + q4 + q5 + q6 + q6 + q6 + 8) >> 4;            dst[strideb * +3] = (p2 + p1 + p0 + q0 + q1 + q2 * 2 + q3 * 2 +                                 q4 * 2 + q5 + q6 + q6 + q6 + q6 + 8) >> 4;            dst[strideb * +4] = (p1 + p0 + q0 + q1 + q2 + q3 * 2 + q4 * 2 +                                 q5 * 2 + q6 + q6 + q6 + q6 + q6 + 8) >> 4;            dst[strideb * +5] = (p0 + q0 + q1 + q2 + q3 + q4 * 2 + q5 * 2 +                                 q6 * 2 + q6 + q6 + q6 + q6 + q6 + 8) >> 4;        } else if (wd >= 8 && flat8in) {            dst[strideb * -3] = (p3 + p3 + p3 + 2 * p2 + p1 + p0 + q0 + 4) >> 3;            dst[strideb * -2] = (p3 + p3 + p2 + 2 * p1 + p0 + q0 + q1 + 4) >> 3;            dst[strideb * -1] = (p3 + p2 + p1 + 2 * p0 + q0 + q1 + q2 + 4) >> 3;            dst[strideb * +0] = (p2 + p1 + p0 + 2 * q0 + q1 + q2 + q3 + 4) >> 3;            dst[strideb * +1] = (p1 + p0 + q0 + 2 * q1 + q2 + q3 + q3 + 4) >> 3;            dst[strideb * +2] = (p0 + q0 + q1 + 2 * q2 + q3 + q3 + q3 + 4) >> 3;        } else if (wd == 6 && flat8in) {            dst[strideb * -2] = (p2 + 2 * p2 + 2 * p1 + 2 * p0 + q0 + 4) >> 3;            dst[strideb * -1] = (p2 + 2 * p1 + 2 * p0 + 2 * q0 + q1 + 4) >> 3;            dst[strideb * +0] = (p1 + 2 * p0 + 2 * q0 + 2 * q1 + q2 + 4) >> 3;            dst[strideb * +1] = (p0 + 2 * q0 + 2 * q1 + 2 * q2 + q2 + 4) >> 3;        } else {            const int hev = abs(p1 - p0) > H || abs(q1 - q0) > H; #define iclip_diff(v) iclip(v, -128 * (1 << bitdepth_min_8), \                                128 * (1 << bitdepth_min_8) - 1)             if (hev) {                int f = iclip_diff(p1 - q1), f1, f2;                f = iclip_diff(3 * (q0 - p0) + f);                 f1 = imin(f + 4, (128 << bitdepth_min_8) - 1) >> 3;                f2 = imin(f + 3, (128 << bitdepth_min_8) - 1) >> 3;                 dst[strideb * -1] = iclip_pixel(p0 + f2);                dst[strideb * +0] = iclip_pixel(q0 - f1);            } else {                int f = iclip_diff(3 * (q0 - p0)), f1, f2;                 f1 = imin(f + 4, (128 << bitdepth_min_8) - 1) >> 3;                f2 = imin(f + 3, (128 << bitdepth_min_8) - 1) >> 3;                 dst[strideb * -1] = iclip_pixel(p0 + f2);                dst[strideb * +0] = iclip_pixel(q0 - f1);                 f = (f1 + 1) >> 1;                dst[strideb * -2] = iclip_pixel(p1 + f);                dst[strideb * +1] = iclip_pixel(q1 - f);            }#undef iclip_diff        }    }} static void loop_filter_h_sb128y_c(pixel *dst, const ptrdiff_t stride,                                   const uint32_t *const vmask,                                   const uint8_t (*l)[4], ptrdiff_t b4_stride,                                   const Av1FilterLUT *lut, const int h                                   HIGHBD_DECL_SUFFIX){    const unsigned vm = vmask[0] | vmask[1] | vmask[2];    for (unsigned y = 1; vm & ~(y - 1);         y <<= 1, dst += 4 * PXSTRIDE(stride), l += b4_stride)    {        if (vm & y) {            const int L = l[0][0] ? l[0][0] : l[-1][0];            if (!L) continue;            const int H = L >> 4;            const int E = lut->e[L], I = lut->i[L];            const int idx = (vmask[2] & y) ? 2 : !!(vmask[1] & y);            loop_filter(dst, E, I, H, PXSTRIDE(stride), 1, 4 << idx                        HIGHBD_TAIL_SUFFIX);        }    }} static void loop_filter_v_sb128y_c(pixel *dst, const ptrdiff_t stride,                                   const uint32_t *const vmask,                                   const uint8_t (*l)[4], ptrdiff_t b4_stride,                                   const Av1FilterLUT *lut, const int w                                   HIGHBD_DECL_SUFFIX){    const unsigned vm = vmask[0] | vmask[1] | vmask[2];    for (unsigned x = 1; vm & ~(x - 1); x <<= 1, dst += 4, l++) {        if (vm & x) {            const int L = l[0][0] ? l[0][0] : l[-b4_stride][0];            if (!L) continue;            const int H = L >> 4;            const int E = lut->e[L], I = lut->i[L];            const int idx = (vmask[2] & x) ? 2 : !!(vmask[1] & x);            loop_filter(dst, E, I, H, 1, PXSTRIDE(stride), 4 << idx                        HIGHBD_TAIL_SUFFIX);        }    }} static void loop_filter_h_sb128uv_c(pixel *dst, const ptrdiff_t stride,                                    const uint32_t *const vmask,                                    const uint8_t (*l)[4], ptrdiff_t b4_stride,                                    const Av1FilterLUT *lut, const int h                                    HIGHBD_DECL_SUFFIX){    const unsigned vm = vmask[0] | vmask[1];    for (unsigned y = 1; vm & ~(y - 1);         y <<= 1, dst += 4 * PXSTRIDE(stride), l += b4_stride)    {        if (vm & y) {            const int L = l[0][0] ? l[0][0] : l[-1][0];            if (!L) continue;            const int H = L >> 4;            const int E = lut->e[L], I = lut->i[L];            const int idx = !!(vmask[1] & y);            loop_filter(dst, E, I, H, PXSTRIDE(stride), 1, 4 + 2 * idx                        HIGHBD_TAIL_SUFFIX);        }    }} static void loop_filter_v_sb128uv_c(pixel *dst, const ptrdiff_t stride,                                    const uint32_t *const vmask,                                    const uint8_t (*l)[4], ptrdiff_t b4_stride,                                    const Av1FilterLUT *lut, const int w                                    HIGHBD_DECL_SUFFIX){    const unsigned vm = vmask[0] | vmask[1];    for (unsigned x = 1; vm & ~(x - 1); x <<= 1, dst += 4, l++) {        if (vm & x) {            const int L = l[0][0] ? l[0][0] : l[-b4_stride][0];            if (!L) continue;            const int H = L >> 4;            const int E = lut->e[L], I = lut->i[L];            const int idx = !!(vmask[1] & x);            loop_filter(dst, E, I, H, 1, PXSTRIDE(stride), 4 + 2 * idx                        HIGHBD_TAIL_SUFFIX);        }    }} COLD void bitfn(dav1d_loop_filter_dsp_init)(Dav1dLoopFilterDSPContext *const c) {    c->loop_filter_sb[0][0] = loop_filter_h_sb128y_c;    c->loop_filter_sb[0][1] = loop_filter_v_sb128y_c;    c->loop_filter_sb[1][0] = loop_filter_h_sb128uv_c;    c->loop_filter_sb[1][1] = loop_filter_v_sb128uv_c; #if HAVE_ASM#if ARCH_AARCH64 || ARCH_ARM    bitfn(dav1d_loop_filter_dsp_init_arm)(c);#elif ARCH_X86    bitfn(dav1d_loop_filter_dsp_init_x86)(c);#endif#endif}