/* * 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 <string.h> #include "common/intops.h" #include "src/ctx.h"#include "src/levels.h"#include "src/lf_mask.h"#include "src/tables.h" static void decomp_tx(uint8_t (*const txa)[2 /* txsz, step */][32 /* y */][32 /* x */],                      const enum RectTxfmSize from,                      const int depth,                      const int y_off, const int x_off,                      const uint16_t *const tx_masks){    const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[from];    const int is_split = (from == (int) TX_4X4 || depth > 1) ? 0 :        (tx_masks[depth] >> (y_off * 4 + x_off)) & 1;     if (is_split) {        const enum RectTxfmSize sub = t_dim->sub;        const int htw4 = t_dim->w >> 1, hth4 = t_dim->h >> 1;         decomp_tx(txa, sub, depth + 1, y_off * 2 + 0, x_off * 2 + 0, tx_masks);        if (t_dim->w >= t_dim->h)            decomp_tx((uint8_t(*)[2][32][32]) &txa[0][0][0][htw4],                      sub, depth + 1, y_off * 2 + 0, x_off * 2 + 1, tx_masks);        if (t_dim->h >= t_dim->w) {            decomp_tx((uint8_t(*)[2][32][32]) &txa[0][0][hth4][0],                      sub, depth + 1, y_off * 2 + 1, x_off * 2 + 0, tx_masks);            if (t_dim->w >= t_dim->h)                decomp_tx((uint8_t(*)[2][32][32]) &txa[0][0][hth4][htw4],                          sub, depth + 1, y_off * 2 + 1, x_off * 2 + 1, tx_masks);        }    } else {        const int lw = imin(2, t_dim->lw), lh = imin(2, t_dim->lh); #define set_ctx(type, dir, diridx, off, mul, rep_macro) \        for (int y = 0; y < t_dim->h; y++) { \            rep_macro(type, txa[0][0][y], off, mul * lw); \            rep_macro(type, txa[1][0][y], off, mul * lh); \            txa[0][1][y][0] = t_dim->w; \        }        case_set_upto16(t_dim->w,,, 0);#undef set_ctx#define set_ctx(type, dir, diridx, off, mul, rep_macro) \        rep_macro(type, txa[1][1][0], off, mul * t_dim->h)        case_set_upto16(t_dim->w,,, 0);#undef set_ctx    }} static inline void mask_edges_inter(uint16_t (*const masks)[32][3][2],                                    const int by4, const int bx4,                                    const int w4, const int h4, const int skip,                                    const enum RectTxfmSize max_tx,                                    const uint16_t *const tx_masks,                                    uint8_t *const a, uint8_t *const l){    const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[max_tx];    int y, x;     uint8_t txa[2 /* edge */][2 /* txsz, step */][32 /* y */][32 /* x */];    for (int y_off = 0, y = 0; y < h4; y += t_dim->h, y_off++)        for (int x_off = 0, x = 0; x < w4; x += t_dim->w, x_off++)            decomp_tx((uint8_t(*)[2][32][32]) &txa[0][0][y][x],                      max_tx, 0, y_off, x_off, tx_masks);     // left block edge    unsigned mask = 1U << by4;    for (y = 0; y < h4; y++, mask <<= 1) {        const int sidx = mask >= 0x10000;        const unsigned smask = mask >> (sidx << 4);        masks[0][bx4][imin(txa[0][0][y][0], l[y])][sidx] |= smask;    }     // top block edge    for (x = 0, mask = 1U << bx4; x < w4; x++, mask <<= 1) {        const int sidx = mask >= 0x10000;        const unsigned smask = mask >> (sidx << 4);        masks[1][by4][imin(txa[1][0][0][x], a[x])][sidx] |= smask;    }     if (!skip) {        // inner (tx) left|right edges        for (y = 0, mask = 1U << by4; y < h4; y++, mask <<= 1) {            const int sidx = mask >= 0x10000U;            const unsigned smask = mask >> (sidx << 4);            int ltx = txa[0][0][y][0];            int step = txa[0][1][y][0];            for (x = step; x < w4; x += step) {                const int rtx = txa[0][0][y][x];                masks[0][bx4 + x][imin(rtx, ltx)][sidx] |= smask;                ltx = rtx;                step = txa[0][1][y][x];            }        }         //            top        // inner (tx) --- edges        //           bottom        for (x = 0, mask = 1U << bx4; x < w4; x++, mask <<= 1) {            const int sidx = mask >= 0x10000U;            const unsigned smask = mask >> (sidx << 4);            int ttx = txa[1][0][0][x];            int step = txa[1][1][0][x];            for (y = step; y < h4; y += step) {                const int btx = txa[1][0][y][x];                masks[1][by4 + y][imin(ttx, btx)][sidx] |= smask;                ttx = btx;                step = txa[1][1][y][x];            }        }    }     for (y = 0; y < h4; y++)        l[y] = txa[0][0][y][w4 - 1];    memcpy(a, txa[1][0][h4 - 1], w4);} static inline void mask_edges_intra(uint16_t (*const masks)[32][3][2],                                    const int by4, const int bx4,                                    const int w4, const int h4,                                    const enum RectTxfmSize tx,                                    uint8_t *const a, uint8_t *const l){    const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[tx];    const int twl4 = t_dim->lw, thl4 = t_dim->lh;    const int twl4c = imin(2, twl4), thl4c = imin(2, thl4);    int y, x;     // left block edge    unsigned mask = 1U << by4;    for (y = 0; y < h4; y++, mask <<= 1) {        const int sidx = mask >= 0x10000;        const unsigned smask = mask >> (sidx << 4);        masks[0][bx4][imin(twl4c, l[y])][sidx] |= smask;    }     // top block edge    for (x = 0, mask = 1U << bx4; x < w4; x++, mask <<= 1) {        const int sidx = mask >= 0x10000;        const unsigned smask = mask >> (sidx << 4);        masks[1][by4][imin(thl4c, a[x])][sidx] |= smask;    }     // inner (tx) left|right edges    const int hstep = t_dim->w;    unsigned t = 1U << by4;    unsigned inner = (unsigned) ((((uint64_t) t) << h4) - t);    unsigned inner1 = inner & 0xffff, inner2 = inner >> 16;    for (x = hstep; x < w4; x += hstep) {        if (inner1) masks[0][bx4 + x][twl4c][0] |= inner1;        if (inner2) masks[0][bx4 + x][twl4c][1] |= inner2;    }     //            top    // inner (tx) --- edges    //           bottom    const int vstep = t_dim->h;    t = 1U << bx4;    inner = (unsigned) ((((uint64_t) t) << w4) - t);    inner1 = inner & 0xffff;    inner2 = inner >> 16;    for (y = vstep; y < h4; y += vstep) {        if (inner1) masks[1][by4 + y][thl4c][0] |= inner1;        if (inner2) masks[1][by4 + y][thl4c][1] |= inner2;    } #define set_ctx(type, dir, diridx, off, mul, rep_macro) \    rep_macro(type, a, off, mul * thl4c)#define default_memset(dir, diridx, off, var) \    memset(a, thl4c, var)    case_set_upto32_with_default(w4,,, 0);#undef default_memset#undef set_ctx#define set_ctx(type, dir, diridx, off, mul, rep_macro) \    rep_macro(type, l, off, mul * twl4c)#define default_memset(dir, diridx, off, var) \    memset(l, twl4c, var)    case_set_upto32_with_default(h4,,, 0);#undef default_memset#undef set_ctx} static inline void mask_edges_chroma(uint16_t (*const masks)[32][2][2],                                     const int cby4, const int cbx4,                                     const int cw4, const int ch4,                                     const int skip_inter,                                     const enum RectTxfmSize tx,                                     uint8_t *const a, uint8_t *const l,                                     const int ss_hor, const int ss_ver){    const TxfmInfo *const t_dim = &dav1d_txfm_dimensions[tx];    const int twl4 = t_dim->lw, thl4 = t_dim->lh;    const int twl4c = !!twl4, thl4c = !!thl4;    int y, x;    const int vbits = 4 - ss_ver, hbits = 4 - ss_hor;    const int vmask = 16 >> ss_ver, hmask = 16 >> ss_hor;    const unsigned vmax = 1 << vmask, hmax = 1 << hmask;     // left block edge    unsigned mask = 1U << cby4;    for (y = 0; y < ch4; y++, mask <<= 1) {        const int sidx = mask >= vmax;        const unsigned smask = mask >> (sidx << vbits);        masks[0][cbx4][imin(twl4c, l[y])][sidx] |= smask;    }     // top block edge    for (x = 0, mask = 1U << cbx4; x < cw4; x++, mask <<= 1) {        const int sidx = mask >= hmax;        const unsigned smask = mask >> (sidx << hbits);        masks[1][cby4][imin(thl4c, a[x])][sidx] |= smask;    }     if (!skip_inter) {        // inner (tx) left|right edges        const int hstep = t_dim->w;        unsigned t = 1U << cby4;        unsigned inner = (unsigned) ((((uint64_t) t) << ch4) - t);        unsigned inner1 = inner & ((1 << vmask) - 1), inner2 = inner >> vmask;        for (x = hstep; x < cw4; x += hstep) {            if (inner1) masks[0][cbx4 + x][twl4c][0] |= inner1;            if (inner2) masks[0][cbx4 + x][twl4c][1] |= inner2;        }         //            top        // inner (tx) --- edges        //           bottom        const int vstep = t_dim->h;        t = 1U << cbx4;        inner = (unsigned) ((((uint64_t) t) << cw4) - t);        inner1 = inner & ((1 << hmask) - 1), inner2 = inner >> hmask;        for (y = vstep; y < ch4; y += vstep) {            if (inner1) masks[1][cby4 + y][thl4c][0] |= inner1;            if (inner2) masks[1][cby4 + y][thl4c][1] |= inner2;        }    } #define set_ctx(type, dir, diridx, off, mul, rep_macro) \    rep_macro(type, a, off, mul * thl4c)#define default_memset(dir, diridx, off, var) \    memset(a, thl4c, var)    case_set_upto32_with_default(cw4,,, 0);#undef default_memset#undef set_ctx#define set_ctx(type, dir, diridx, off, mul, rep_macro) \    rep_macro(type, l, off, mul * twl4c)#define default_memset(dir, diridx, off, var) \    memset(l, twl4c, var)    case_set_upto32_with_default(ch4,,, 0);#undef default_memset#undef set_ctx} void dav1d_create_lf_mask_intra(Av1Filter *const lflvl,                                uint8_t (*const level_cache)[4],                                const ptrdiff_t b4_stride,                                const uint8_t (*filter_level)[8][2],                                const int bx, const int by,                                const int iw, const int ih,                                const enum BlockSize bs,                                const enum RectTxfmSize ytx,                                const enum RectTxfmSize uvtx,                                const enum Dav1dPixelLayout layout,                                uint8_t *const ay, uint8_t *const ly,                                uint8_t *const auv, uint8_t *const luv){    const uint8_t *const b_dim = dav1d_block_dimensions[bs];    const int bw4 = imin(iw - bx, b_dim[0]);    const int bh4 = imin(ih - by, b_dim[1]);    const int bx4 = bx & 31;    const int by4 = by & 31;     if (bw4 && bh4) {        uint8_t (*level_cache_ptr)[4] = level_cache + by * b4_stride + bx;        for (int y = 0; y < bh4; y++) {            for (int x = 0; x < bw4; x++) {                level_cache_ptr[x][0] = filter_level[0][0][0];                level_cache_ptr[x][1] = filter_level[1][0][0];            }            level_cache_ptr += b4_stride;        }         mask_edges_intra(lflvl->filter_y, by4, bx4, bw4, bh4, ytx, ay, ly);    }     if (!auv) return;     const int ss_ver = layout == DAV1D_PIXEL_LAYOUT_I420;    const int ss_hor = layout != DAV1D_PIXEL_LAYOUT_I444;    const int cbw4 = imin(((iw + ss_hor) >> ss_hor) - (bx >> ss_hor),                          (b_dim[0] + ss_hor) >> ss_hor);    const int cbh4 = imin(((ih + ss_ver) >> ss_ver) - (by >> ss_ver),                          (b_dim[1] + ss_ver) >> ss_ver);     if (!cbw4 || !cbh4) return;     const int cbx4 = bx4 >> ss_hor;    const int cby4 = by4 >> ss_ver;     uint8_t (*level_cache_ptr)[4] =        level_cache + (by >> ss_ver) * b4_stride + (bx >> ss_hor);    for (int y = 0; y < cbh4; y++) {        for (int x = 0; x < cbw4; x++) {            level_cache_ptr[x][2] = filter_level[2][0][0];            level_cache_ptr[x][3] = filter_level[3][0][0];        }        level_cache_ptr += b4_stride;    }     mask_edges_chroma(lflvl->filter_uv, cby4, cbx4, cbw4, cbh4, 0, uvtx,                      auv, luv, ss_hor, ss_ver);} void dav1d_create_lf_mask_inter(Av1Filter *const lflvl,                                uint8_t (*const level_cache)[4],                                const ptrdiff_t b4_stride,                                const uint8_t (*filter_level)[8][2],                                const int bx, const int by,                                const int iw, const int ih,                                const int skip, const enum BlockSize bs,                                const enum RectTxfmSize max_ytx,                                const uint16_t *const tx_masks,                                const enum RectTxfmSize uvtx,                                const enum Dav1dPixelLayout layout,                                uint8_t *const ay, uint8_t *const ly,                                uint8_t *const auv, uint8_t *const luv){    const uint8_t *const b_dim = dav1d_block_dimensions[bs];    const int bw4 = imin(iw - bx, b_dim[0]);    const int bh4 = imin(ih - by, b_dim[1]);    const int bx4 = bx & 31;    const int by4 = by & 31;     if (bw4 && bh4) {        uint8_t (*level_cache_ptr)[4] = level_cache + by * b4_stride + bx;        for (int y = 0; y < bh4; y++) {            for (int x = 0; x < bw4; x++) {                level_cache_ptr[x][0] = filter_level[0][0][0];                level_cache_ptr[x][1] = filter_level[1][0][0];            }            level_cache_ptr += b4_stride;        }         mask_edges_inter(lflvl->filter_y, by4, bx4, bw4, bh4, skip,                         max_ytx, tx_masks, ay, ly);    }     if (!auv) return;     const int ss_ver = layout == DAV1D_PIXEL_LAYOUT_I420;    const int ss_hor = layout != DAV1D_PIXEL_LAYOUT_I444;    const int cbw4 = imin(((iw + ss_hor) >> ss_hor) - (bx >> ss_hor),                          (b_dim[0] + ss_hor) >> ss_hor);    const int cbh4 = imin(((ih + ss_ver) >> ss_ver) - (by >> ss_ver),                          (b_dim[1] + ss_ver) >> ss_ver);     if (!cbw4 || !cbh4) return;     const int cbx4 = bx4 >> ss_hor;    const int cby4 = by4 >> ss_ver;     uint8_t (*level_cache_ptr)[4] =        level_cache + (by >> ss_ver) * b4_stride + (bx >> ss_hor);    for (int y = 0; y < cbh4; y++) {        for (int x = 0; x < cbw4; x++) {            level_cache_ptr[x][2] = filter_level[2][0][0];            level_cache_ptr[x][3] = filter_level[3][0][0];        }        level_cache_ptr += b4_stride;    }     mask_edges_chroma(lflvl->filter_uv, cby4, cbx4, cbw4, cbh4, skip, uvtx,                      auv, luv, ss_hor, ss_ver);} void dav1d_calc_eih(Av1FilterLUT *const lim_lut, const int filter_sharpness) {    // set E/I/H values from loopfilter level    const int sharp = filter_sharpness;    for (int level = 0; level < 64; level++) {        int limit = level;         if (sharp > 0) {            limit >>= (sharp + 3) >> 2;            limit = imin(limit, 9 - sharp);        }        limit = imax(limit, 1);         lim_lut->i[level] = limit;        lim_lut->e[level] = 2 * (level + 2) + limit;    }    lim_lut->sharp[0] = (sharp + 3) >> 2;    lim_lut->sharp[1] = sharp ? 9 - sharp : 0xff;} static inline void calc_lf_value(uint8_t (*const lflvl_values)[2],                                 const int is_chroma, const int base_lvl,                                 const int lf_delta, const int seg_delta,                                 const Dav1dLoopfilterModeRefDeltas *const mr_delta){    const int base = iclip(iclip(base_lvl + lf_delta, 0, 63) + seg_delta, 0, 63);     if (!base_lvl && is_chroma) {        memset(lflvl_values, 0, 8 * 2);    } else if (!mr_delta) {        memset(lflvl_values, base, 8 * 2);    } else {        const int sh = base >= 32;        lflvl_values[0][0] = lflvl_values[0][1] =            iclip(base + (mr_delta->ref_delta[0] * (1 << sh)), 0, 63);        for (int r = 1; r < 8; r++) {            for (int m = 0; m < 2; m++) {                const int delta =                    mr_delta->mode_delta[m] + mr_delta->ref_delta[r];                lflvl_values[r][m] = iclip(base + (delta * (1 << sh)), 0, 63);            }        }    }} void dav1d_calc_lf_values(uint8_t (*const lflvl_values)[4][8][2],                          const Dav1dFrameHeader *const hdr,                          const int8_t lf_delta[4]){    const int n_seg = hdr->segmentation.enabled ? 8 : 1;     if (!hdr->loopfilter.level_y[0] && !hdr->loopfilter.level_y[1]) {        memset(lflvl_values, 0, 8 * 4 * 2 * n_seg);        return;    }     const Dav1dLoopfilterModeRefDeltas *const mr_deltas =        hdr->loopfilter.mode_ref_delta_enabled ?        &hdr->loopfilter.mode_ref_deltas : NULL;    for (int s = 0; s < n_seg; s++) {        const Dav1dSegmentationData *const segd =            hdr->segmentation.enabled ? &hdr->segmentation.seg_data.d[s] : NULL;         calc_lf_value(lflvl_values[s][0], 0, hdr->loopfilter.level_y[0],                      lf_delta[0], segd ? segd->delta_lf_y_v : 0, mr_deltas);        calc_lf_value(lflvl_values[s][1], 0, hdr->loopfilter.level_y[1],                      lf_delta[hdr->delta.lf.multi ? 1 : 0],                      segd ? segd->delta_lf_y_h : 0, mr_deltas);        calc_lf_value(lflvl_values[s][2], 1, hdr->loopfilter.level_u,                      lf_delta[hdr->delta.lf.multi ? 2 : 0],                      segd ? segd->delta_lf_u : 0, mr_deltas);        calc_lf_value(lflvl_values[s][3], 1, hdr->loopfilter.level_v,                      lf_delta[hdr->delta.lf.multi ? 3 : 0],                      segd ? segd->delta_lf_v : 0, mr_deltas);    }}