ref: c371907ffea1cafa9ee5867df4127a53b836d68f
dir: /src/loopfilter_tmpl.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 <stdlib.h> #include "common/attributes.h" #include "common/intops.h" #include "src/loopfilter.h" static NOINLINE void loop_filter(pixel *dst, int E, int I, int H, const ptrdiff_t stridea, const ptrdiff_t strideb, const int wd) { const int F = 1 << (BITDEPTH - 8); E <<= BITDEPTH - 8; I <<= BITDEPTH - 8; H <<= BITDEPTH - 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 - 8)), \ 128 * (1 << (BITDEPTH - 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 - 8)) - 1) >> 3; f2 = imin(f + 3, (128 << (BITDEPTH - 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 - 8)) - 1) >> 3; f2 = imin(f + 3, (128 << (BITDEPTH - 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) { 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); } } } 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) { 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); } } } 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) { 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); } } } 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) { 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); } } } 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 && ARCH_X86 bitfn(dav1d_loop_filter_dsp_init_x86)(c); #endif }