git.sesse.net Git - ffmpeg/blob - libavcodec/hevc_filter.c

   1 /*
   2  * HEVC video decoder
   3  *
   4  * Copyright (C) 2012 - 2013 Guillaume Martres
   5  * Copyright (C) 2013 Seppo Tomperi
   6  * Copyright (C) 2013 Wassim Hamidouche
   7  *
   8  * This file is part of FFmpeg.
   9  *
  10  * FFmpeg is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * FFmpeg is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with FFmpeg; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  23  */
  24
  25 #include "libavutil/common.h"
  26 #include "libavutil/internal.h"
  27
  28 #include "cabac_functions.h"
  29 #include "golomb.h"
  30 #include "hevc.h"
  31
  32 #include "bit_depth_template.c"
  33
  34 #define LUMA 0
  35 #define CB 1
  36 #define CR 2
  37
  38 static const uint8_t tctable[54] = {
  39     0, 0, 0, 0, 0, 0, 0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 0, 0, 1, // QP  0...18
  40     1, 1, 1, 1, 1, 1, 1,  1,  2,  2,  2,  2,  3,  3,  3,  3, 4, 4, 4, // QP 19...37
  41     5, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14, 16, 18, 20, 22, 24           // QP 38...53
  42 };
  43
  44 static const uint8_t betatable[52] = {
  45      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  6,  7,  8, // QP 0...18
  46      9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, // QP 19...37
  47     38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64                      // QP 38...51
  48 };
  49
  50 static int chroma_tc(HEVCContext *s, int qp_y, int c_idx, int tc_offset)
  51 {
  52     static const int qp_c[] = {
  53         29, 30, 31, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37
  54     };
  55     int qp, qp_i, offset, idxt;
  56
  57     // slice qp offset is not used for deblocking
  58     if (c_idx == 1)
  59         offset = s->pps->cb_qp_offset;
  60     else
  61         offset = s->pps->cr_qp_offset;
  62
  63     qp_i = av_clip_c(qp_y + offset, 0, 57);
  64     if (qp_i < 30)
  65         qp = qp_i;
  66     else if (qp_i > 43)
  67         qp = qp_i - 6;
  68     else
  69         qp = qp_c[qp_i - 30];
  70
  71     idxt = av_clip_c(qp + DEFAULT_INTRA_TC_OFFSET + tc_offset, 0, 53);
  72     return tctable[idxt];
  73 }
  74
  75 static int get_qPy_pred(HEVCContext *s, int xC, int yC,
  76                         int xBase, int yBase, int log2_cb_size)
  77 {
  78     HEVCLocalContext *lc     = s->HEVClc;
  79     int ctb_size_mask        = (1 << s->sps->log2_ctb_size) - 1;
  80     int MinCuQpDeltaSizeMask = (1 << (s->sps->log2_ctb_size -
  81                                       s->pps->diff_cu_qp_delta_depth)) - 1;
  82     int xQgBase              = xBase - (xBase & MinCuQpDeltaSizeMask);
  83     int yQgBase              = yBase - (yBase & MinCuQpDeltaSizeMask);
  84     int min_cb_width         = s->sps->min_cb_width;
  85     int x_cb                 = xQgBase >> s->sps->log2_min_cb_size;
  86     int y_cb                 = yQgBase >> s->sps->log2_min_cb_size;
  87     int availableA           = (xBase   & ctb_size_mask) &&
  88                                (xQgBase & ctb_size_mask);
  89     int availableB           = (yBase   & ctb_size_mask) &&
  90                                (yQgBase & ctb_size_mask);
  91     int qPy_pred, qPy_a, qPy_b;
  92
  93     // qPy_pred
  94     if (lc->first_qp_group || (!xQgBase && !yQgBase)) {
  95         lc->first_qp_group = !lc->tu.is_cu_qp_delta_coded;
  96         qPy_pred = s->sh.slice_qp;
  97     } else {
  98         qPy_pred = lc->qPy_pred;
  99     }
 100
 101     // qPy_a
 102     if (availableA == 0)
 103         qPy_a = qPy_pred;
 104     else
 105         qPy_a = s->qp_y_tab[(x_cb - 1) + y_cb * min_cb_width];
 106
 107     // qPy_b
 108     if (availableB == 0)
 109         qPy_b = qPy_pred;
 110     else
 111         qPy_b = s->qp_y_tab[x_cb + (y_cb - 1) * min_cb_width];
 112
 113     av_assert2(qPy_a >= -s->sps->qp_bd_offset && qPy_a < 52);
 114     av_assert2(qPy_b >= -s->sps->qp_bd_offset && qPy_b < 52);
 115
 116     return (qPy_a + qPy_b + 1) >> 1;
 117 }
 118
 119 void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC,
 120                      int xBase, int yBase, int log2_cb_size)
 121 {
 122     int qp_y = get_qPy_pred(s, xC, yC, xBase, yBase, log2_cb_size);
 123
 124     if (s->HEVClc->tu.cu_qp_delta != 0) {
 125         int off = s->sps->qp_bd_offset;
 126         s->HEVClc->qp_y = FFUMOD(qp_y + s->HEVClc->tu.cu_qp_delta + 52 + 2 * off,
 127                                  52 + off) - off;
 128     } else
 129         s->HEVClc->qp_y = qp_y;
 130 }
 131
 132 static int get_qPy(HEVCContext *s, int xC, int yC)
 133 {
 134     int log2_min_cb_size  = s->sps->log2_min_cb_size;
 135     int x                 = xC >> log2_min_cb_size;
 136     int y                 = yC >> log2_min_cb_size;
 137     return s->qp_y_tab[x + y * s->sps->min_cb_width];
 138 }
 139
 140 static void copy_CTB(uint8_t *dst, uint8_t *src,
 141                      int width, int height, int stride)
 142 {
 143     int i;
 144
 145     for (i = 0; i < height; i++) {
 146         memcpy(dst, src, width);
 147         dst += stride;
 148         src += stride;
 149     }
 150 }
 151
 152 #define CTB(tab, x, y) ((tab)[(y) * s->sps->ctb_width + (x)])
 153
 154 static void sao_filter_CTB(HEVCContext *s, int x, int y)
 155 {
 156     //  TODO: This should be easily parallelizable
 157     //  TODO: skip CBs when (cu_transquant_bypass_flag || (pcm_loop_filter_disable_flag && pcm_flag))
 158     int c_idx = 0;
 159     int class = 1, class_index;
 160     int edges[4];  // 0 left 1 top 2 right 3 bottom
 161     SAOParams *sao[4];
 162     int classes[4];
 163     int x_shift = 0, y_shift = 0;
 164     int x_ctb = x >> s->sps->log2_ctb_size;
 165     int y_ctb = y >> s->sps->log2_ctb_size;
 166     int ctb_addr_rs = y_ctb * s->sps->ctb_width + x_ctb;
 167     int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[ctb_addr_rs];
 168
 169     // flags indicating unfilterable edges
 170     uint8_t vert_edge[]  = { 0, 0, 0, 0 };
 171     uint8_t horiz_edge[] = { 0, 0, 0, 0 };
 172     uint8_t diag_edge[]  = { 0, 0, 0, 0 };
 173     uint8_t lfase[3]; // current, above, left
 174     uint8_t no_tile_filter = s->pps->tiles_enabled_flag &&
 175                              !s->pps->loop_filter_across_tiles_enabled_flag;
 176     uint8_t left_tile_edge = 0;
 177     uint8_t up_tile_edge = 0;
 178
 179     sao[0]     = &CTB(s->sao, x_ctb, y_ctb);
 180     edges[0]   = x_ctb == 0;
 181     edges[1]   = y_ctb == 0;
 182     edges[2]   = x_ctb == s->sps->ctb_width  - 1;
 183     edges[3]   = y_ctb == s->sps->ctb_height - 1;
 184     lfase[0]   = CTB(s->filter_slice_edges, x_ctb, y_ctb);
 185     classes[0] = 0;
 186
 187     if (!edges[0]) {
 188         left_tile_edge = no_tile_filter && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs-1]];
 189         sao[class] = &CTB(s->sao, x_ctb - 1, y_ctb);
 190         vert_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb)) || left_tile_edge;
 191         vert_edge[2] = vert_edge[0];
 192         lfase[2]     = CTB(s->filter_slice_edges, x_ctb - 1, y_ctb);
 193         classes[class] = 2;
 194         class++;
 195         x_shift = 8;
 196     }
 197
 198     if (!edges[1]) {
 199         up_tile_edge = no_tile_filter && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs - s->sps->ctb_width]];
 200         sao[class] = &CTB(s->sao, x_ctb, y_ctb - 1);
 201         horiz_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) || up_tile_edge;
 202         horiz_edge[1] = horiz_edge[0];
 203         lfase[1] = CTB(s->filter_slice_edges, x_ctb, y_ctb - 1);
 204         classes[class] = 1;
 205         class++;
 206         y_shift = 4;
 207
 208         if (!edges[0]) {
 209             classes[class] = 3;
 210             sao[class] = &CTB(s->sao, x_ctb - 1, y_ctb - 1);
 211             class++;
 212
 213             // Tile check here is done current CTB row/col, not above/left like you'd expect,
 214             //but that is because the tile boundary always extends through the whole pic
 215             vert_edge[1] = (!lfase[1] && CTB(s->tab_slice_address, x_ctb, y_ctb - 1) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || left_tile_edge;
 216             vert_edge[3] = vert_edge[1];
 217             horiz_edge[2] = (!lfase[2] && CTB(s->tab_slice_address, x_ctb - 1, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || up_tile_edge;
 218             horiz_edge[3] = horiz_edge[2];
 219             diag_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || left_tile_edge || up_tile_edge;
 220             diag_edge[3] = diag_edge[0];
 221
 222             // Does left CTB comes after above CTB?
 223             if (CTB(s->tab_slice_address, x_ctb - 1, y_ctb) >
 224                 CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) {
 225                 diag_edge[2] = !lfase[2] || left_tile_edge || up_tile_edge;
 226                 diag_edge[1] = diag_edge[2];
 227             } else if (CTB(s->tab_slice_address, x_ctb - 1, y_ctb) <
 228                        CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) {
 229                 diag_edge[1] = !lfase[1] || left_tile_edge || up_tile_edge;
 230                 diag_edge[2] = diag_edge[1];
 231             } else {
 232                 // Same slice, only consider tiles
 233                 diag_edge[2] = left_tile_edge || up_tile_edge;
 234                 diag_edge[1] = diag_edge[2];
 235             }
 236         }
 237     }
 238
 239     for (c_idx = 0; c_idx < 3; c_idx++) {
 240         int chroma = c_idx ? 1 : 0;
 241         int x0 = x >> chroma;
 242         int y0 = y >> chroma;
 243         int stride = s->frame->linesize[c_idx];
 244         int ctb_size = (1 << (s->sps->log2_ctb_size)) >> s->sps->hshift[c_idx];
 245         int width = FFMIN(ctb_size,
 246                           (s->sps->width >> s->sps->hshift[c_idx]) - x0);
 247         int height = FFMIN(ctb_size,
 248                            (s->sps->height >> s->sps->vshift[c_idx]) - y0);
 249
 250         uint8_t *src = &s->frame->data[c_idx][y0 * stride + (x0 << s->sps->pixel_shift)];
 251         uint8_t *dst = &s->sao_frame->data[c_idx][y0 * stride + (x0 << s->sps->pixel_shift)];
 252         int offset = (y_shift >> chroma) * stride + ((x_shift >> chroma) << s->sps->pixel_shift);
 253
 254         copy_CTB(dst - offset, src - offset,
 255                  (edges[2] ? width  + (x_shift >> chroma) : width)  << s->sps->pixel_shift,
 256                  (edges[3] ? height + (y_shift >> chroma) : height), stride);
 257
 258         for (class_index = 0; class_index < class; class_index++) {
 259
 260             switch (sao[class_index]->type_idx[c_idx]) {
 261             case SAO_BAND:
 262                 s->hevcdsp.sao_band_filter[classes[class_index]](dst, src,
 263                                                                  stride,
 264                                                                  sao[class_index],
 265                                                                  edges, width,
 266                                                                  height, c_idx);
 267                 break;
 268             case SAO_EDGE:
 269                 s->hevcdsp.sao_edge_filter[classes[class_index]](dst, src,
 270                                                                  stride,
 271                                                                  sao[class_index],
 272                                                                  edges, width,
 273                                                                  height, c_idx,
 274                                                                  vert_edge[classes[class_index]],
 275                                                                  horiz_edge[classes[class_index]],
 276                                                                  diag_edge[classes[class_index]]);
 277                 break;
 278             }
 279         }
 280     }
 281 }
 282
 283 static int get_pcm(HEVCContext *s, int x, int y)
 284 {
 285     int log2_min_pu_size = s->sps->log2_min_pu_size;
 286     int x_pu, y_pu;
 287
 288     if (x < 0 || y < 0)
 289         return 2;
 290
 291     x_pu = x >> log2_min_pu_size;
 292     y_pu = y >> log2_min_pu_size;
 293
 294     if (x_pu >= s->sps->min_pu_width || y_pu >= s->sps->min_pu_height)
 295         return 2;
 296     return s->is_pcm[y_pu * s->sps->min_pu_width + x_pu];
 297 }
 298
 299 #define TC_CALC(qp, bs)                                                 \
 300     tctable[av_clip((qp) + DEFAULT_INTRA_TC_OFFSET * ((bs) - 1) +       \
 301                     (tc_offset >> 1 << 1),                              \
 302                     0, MAX_QP + DEFAULT_INTRA_TC_OFFSET)]
 303
 304 static void deblocking_filter_CTB(HEVCContext *s, int x0, int y0)
 305 {
 306     uint8_t *src;
 307     int x, y;
 308     int chroma;
 309     int c_tc[2], beta[2], tc[2];
 310     uint8_t no_p[2] = { 0 };
 311     uint8_t no_q[2] = { 0 };
 312
 313     int log2_ctb_size = s->sps->log2_ctb_size;
 314     int x_end, y_end;
 315     int ctb_size        = 1 << log2_ctb_size;
 316     int ctb             = (x0 >> log2_ctb_size) +
 317                           (y0 >> log2_ctb_size) * s->sps->ctb_width;
 318     int cur_tc_offset   = s->deblock[ctb].tc_offset;
 319     int cur_beta_offset = s->deblock[ctb].beta_offset;
 320     int left_tc_offset, left_beta_offset;
 321     int tc_offset, beta_offset;
 322     int pcmf = (s->sps->pcm_enabled_flag &&
 323                 s->sps->pcm.loop_filter_disable_flag) ||
 324                s->pps->transquant_bypass_enable_flag;
 325
 326     if (x0) {
 327         left_tc_offset   = s->deblock[ctb - 1].tc_offset;
 328         left_beta_offset = s->deblock[ctb - 1].beta_offset;
 329     }
 330
 331     x_end = x0 + ctb_size;
 332     if (x_end > s->sps->width)
 333         x_end = s->sps->width;
 334     y_end = y0 + ctb_size;
 335     if (y_end > s->sps->height)
 336         y_end = s->sps->height;
 337
 338     tc_offset   = cur_tc_offset;
 339     beta_offset = cur_beta_offset;
 340
 341     // vertical filtering luma
 342     for (y = y0; y < y_end; y += 8) {
 343         for (x = x0 ? x0 : 8; x < x_end; x += 8) {
 344             const int bs0 = s->vertical_bs[(x >> 3) + (y       >> 2) * s->bs_width];
 345             const int bs1 = s->vertical_bs[(x >> 3) + ((y + 4) >> 2) * s->bs_width];
 346             if (bs0 || bs1) {
 347                 const int qp0 = (get_qPy(s, x - 1, y)     + get_qPy(s, x, y)     + 1) >> 1;
 348                 const int qp1 = (get_qPy(s, x - 1, y + 4) + get_qPy(s, x, y + 4) + 1) >> 1;
 349
 350                 beta[0] = betatable[av_clip(qp0 + beta_offset, 0, MAX_QP)];
 351                 beta[1] = betatable[av_clip(qp1 + beta_offset, 0, MAX_QP)];
 352                 tc[0]   = bs0 ? TC_CALC(qp0, bs0) : 0;
 353                 tc[1]   = bs1 ? TC_CALC(qp1, bs1) : 0;
 354                 src     = &s->frame->data[LUMA][y * s->frame->linesize[LUMA] + (x << s->sps->pixel_shift)];
 355                 if (pcmf) {
 356                     no_p[0] = get_pcm(s, x - 1, y);
 357                     no_p[1] = get_pcm(s, x - 1, y + 4);
 358                     no_q[0] = get_pcm(s, x, y);
 359                     no_q[1] = get_pcm(s, x, y + 4);
 360                     s->hevcdsp.hevc_v_loop_filter_luma_c(src,
 361                                                          s->frame->linesize[LUMA],
 362                                                          beta, tc, no_p, no_q);
 363                 } else
 364                     s->hevcdsp.hevc_v_loop_filter_luma(src,
 365                                                        s->frame->linesize[LUMA],
 366                                                        beta, tc, no_p, no_q);
 367             }
 368         }
 369     }
 370
 371     // vertical filtering chroma
 372     for (chroma = 1; chroma <= 2; chroma++) {
 373         for (y = y0; y < y_end; y += 16) {
 374             for (x = x0 ? x0 : 16; x < x_end; x += 16) {
 375                 const int bs0 = s->vertical_bs[(x >> 3) + (y       >> 2) * s->bs_width];
 376                 const int bs1 = s->vertical_bs[(x >> 3) + ((y + 8) >> 2) * s->bs_width];
 377                 if ((bs0 == 2) || (bs1 == 2)) {
 378                     const int qp0 = (get_qPy(s, x - 1, y)     + get_qPy(s, x, y)     + 1) >> 1;
 379                     const int qp1 = (get_qPy(s, x - 1, y + 8) + get_qPy(s, x, y + 8) + 1) >> 1;
 380
 381                     c_tc[0] = (bs0 == 2) ? chroma_tc(s, qp0, chroma, tc_offset) : 0;
 382                     c_tc[1] = (bs1 == 2) ? chroma_tc(s, qp1, chroma, tc_offset) : 0;
 383                     src     = &s->frame->data[chroma][y / 2 * s->frame->linesize[chroma] + ((x / 2) << s->sps->pixel_shift)];
 384                     if (pcmf) {
 385                         no_p[0] = get_pcm(s, x - 1, y);
 386                         no_p[1] = get_pcm(s, x - 1, y + 8);
 387                         no_q[0] = get_pcm(s, x, y);
 388                         no_q[1] = get_pcm(s, x, y + 8);
 389                         s->hevcdsp.hevc_v_loop_filter_chroma_c(src,
 390                                                                s->frame->linesize[chroma],
 391                                                                c_tc, no_p, no_q);
 392                     } else
 393                         s->hevcdsp.hevc_v_loop_filter_chroma(src,
 394                                                              s->frame->linesize[chroma],
 395                                                              c_tc, no_p, no_q);
 396                 }
 397             }
 398         }
 399     }
 400
 401     // horizontal filtering luma
 402     if (x_end != s->sps->width)
 403         x_end -= 8;
 404     for (y = y0 ? y0 : 8; y < y_end; y += 8) {
 405         for (x = x0 ? x0 - 8 : 0; x < x_end; x += 8) {
 406             const int bs0 = s->horizontal_bs[(x +     y * s->bs_width) >> 2];
 407             const int bs1 = s->horizontal_bs[(x + 4 + y * s->bs_width) >> 2];
 408             if (bs0 || bs1) {
 409                 const int qp0 = (get_qPy(s, x, y - 1)     + get_qPy(s, x, y)     + 1) >> 1;
 410                 const int qp1 = (get_qPy(s, x + 4, y - 1) + get_qPy(s, x + 4, y) + 1) >> 1;
 411
 412                 tc_offset   = x >= x0 ? cur_tc_offset : left_tc_offset;
 413                 beta_offset = x >= x0 ? cur_beta_offset : left_beta_offset;
 414
 415                 beta[0] = betatable[av_clip(qp0 + beta_offset, 0, MAX_QP)];
 416                 beta[1] = betatable[av_clip(qp1 + beta_offset, 0, MAX_QP)];
 417                 tc[0]   = bs0 ? TC_CALC(qp0, bs0) : 0;
 418                 tc[1]   = bs1 ? TC_CALC(qp1, bs1) : 0;
 419                 src     = &s->frame->data[LUMA][y * s->frame->linesize[LUMA] + (x << s->sps->pixel_shift)];
 420                 if (pcmf) {
 421                     no_p[0] = get_pcm(s, x, y - 1);
 422                     no_p[1] = get_pcm(s, x + 4, y - 1);
 423                     no_q[0] = get_pcm(s, x, y);
 424                     no_q[1] = get_pcm(s, x + 4, y);
 425                     s->hevcdsp.hevc_h_loop_filter_luma_c(src,
 426                                                          s->frame->linesize[LUMA],
 427                                                          beta, tc, no_p, no_q);
 428                 } else
 429                     s->hevcdsp.hevc_h_loop_filter_luma(src,
 430                                                        s->frame->linesize[LUMA],
 431                                                        beta, tc, no_p, no_q);
 432             }
 433         }
 434     }
 435
 436     // horizontal filtering chroma
 437     for (chroma = 1; chroma <= 2; chroma++) {
 438         for (y = y0 ? y0 : 16; y < y_end; y += 16) {
 439             for (x = x0 - 8; x < x_end; x += 16) {
 440                 int bs0, bs1;
 441                 // to make sure no memory access over boundary when x = -8
 442                 // TODO: simplify with row based deblocking
 443                 if (x < 0) {
 444                     bs0 = 0;
 445                     bs1 = s->horizontal_bs[(x + 8 + y * s->bs_width) >> 2];
 446                 } else if (x >= x_end - 8) {
 447                     bs0 = s->horizontal_bs[(x +     y * s->bs_width) >> 2];
 448                     bs1 = 0;
 449                 } else {
 450                     bs0 = s->horizontal_bs[(x + y     * s->bs_width) >> 2];
 451                     bs1 = s->horizontal_bs[(x + 8 + y * s->bs_width) >> 2];
 452                 }
 453
 454                 if ((bs0 == 2) || (bs1 == 2)) {
 455                     const int qp0 = bs0 == 2 ? (get_qPy(s, x,     y - 1) + get_qPy(s, x,     y) + 1) >> 1 : 0;
 456                     const int qp1 = bs1 == 2 ? (get_qPy(s, x + 8, y - 1) + get_qPy(s, x + 8, y) + 1) >> 1 : 0;
 457
 458                     tc_offset = x >= x0 ? cur_tc_offset : left_tc_offset;
 459                     c_tc[0]   = bs0 == 2 ? chroma_tc(s, qp0, chroma, tc_offset)     : 0;
 460                     c_tc[1]   = bs1 == 2 ? chroma_tc(s, qp1, chroma, cur_tc_offset) : 0;
 461                     src       = &s->frame->data[chroma][y / 2 * s->frame->linesize[chroma] + ((x / 2) << s->sps->pixel_shift)];
 462                     if (pcmf) {
 463                         no_p[0] = get_pcm(s, x, y - 1);
 464                         no_p[1] = get_pcm(s, x + 8, y - 1);
 465                         no_q[0] = get_pcm(s, x, y);
 466                         no_q[1] = get_pcm(s, x + 8, y);
 467                         s->hevcdsp.hevc_h_loop_filter_chroma_c(src,
 468                                                                s->frame->linesize[chroma],
 469                                                                c_tc, no_p, no_q);
 470                     } else
 471                         s->hevcdsp.hevc_h_loop_filter_chroma(src,
 472                                                              s->frame->linesize[chroma],
 473                                                              c_tc, no_p, no_q);
 474                 }
 475             }
 476         }
 477     }
 478 }
 479
 480 static int boundary_strength(HEVCContext *s, MvField *curr,
 481                              uint8_t curr_cbf_luma, MvField *neigh,
 482                              uint8_t neigh_cbf_luma,
 483                              RefPicList *neigh_refPicList,
 484                              int tu_border)
 485 {
 486     int mvs = curr->pred_flag[0] + curr->pred_flag[1];
 487
 488     if (tu_border) {
 489         if (curr->is_intra || neigh->is_intra)
 490             return 2;
 491         if (curr_cbf_luma || neigh_cbf_luma)
 492             return 1;
 493     }
 494
 495     if (mvs == neigh->pred_flag[0] + neigh->pred_flag[1]) {
 496         if (mvs == 2) {
 497             // same L0 and L1
 498             if (s->ref->refPicList[0].list[curr->ref_idx[0]] == neigh_refPicList[0].list[neigh->ref_idx[0]]  &&
 499                 s->ref->refPicList[0].list[curr->ref_idx[0]] == s->ref->refPicList[1].list[curr->ref_idx[1]] &&
 500                 neigh_refPicList[0].list[neigh->ref_idx[0]] == neigh_refPicList[1].list[neigh->ref_idx[1]]) {
 501                 if ((abs(neigh->mv[0].x - curr->mv[0].x) >= 4 || abs(neigh->mv[0].y - curr->mv[0].y) >= 4 ||
 502                      abs(neigh->mv[1].x - curr->mv[1].x) >= 4 || abs(neigh->mv[1].y - curr->mv[1].y) >= 4) &&
 503                     (abs(neigh->mv[1].x - curr->mv[0].x) >= 4 || abs(neigh->mv[1].y - curr->mv[0].y) >= 4 ||
 504                      abs(neigh->mv[0].x - curr->mv[1].x) >= 4 || abs(neigh->mv[0].y - curr->mv[1].y) >= 4))
 505                     return 1;
 506                 else
 507                     return 0;
 508             } else if (neigh_refPicList[0].list[neigh->ref_idx[0]] == s->ref->refPicList[0].list[curr->ref_idx[0]] &&
 509                        neigh_refPicList[1].list[neigh->ref_idx[1]] == s->ref->refPicList[1].list[curr->ref_idx[1]]) {
 510                 if (abs(neigh->mv[0].x - curr->mv[0].x) >= 4 || abs(neigh->mv[0].y - curr->mv[0].y) >= 4 ||
 511                     abs(neigh->mv[1].x - curr->mv[1].x) >= 4 || abs(neigh->mv[1].y - curr->mv[1].y) >= 4)
 512                     return 1;
 513                 else
 514                     return 0;
 515             } else if (neigh_refPicList[1].list[neigh->ref_idx[1]] == s->ref->refPicList[0].list[curr->ref_idx[0]] &&
 516                        neigh_refPicList[0].list[neigh->ref_idx[0]] == s->ref->refPicList[1].list[curr->ref_idx[1]]) {
 517                 if (abs(neigh->mv[1].x - curr->mv[0].x) >= 4 || abs(neigh->mv[1].y - curr->mv[0].y) >= 4 ||
 518                     abs(neigh->mv[0].x - curr->mv[1].x) >= 4 || abs(neigh->mv[0].y - curr->mv[1].y) >= 4)
 519                     return 1;
 520                 else
 521                     return 0;
 522             } else {
 523                 return 1;
 524             }
 525         } else { // 1 MV
 526             Mv A, B;
 527             int ref_A, ref_B;
 528
 529             if (curr->pred_flag[0]) {
 530                 A     = curr->mv[0];
 531                 ref_A = s->ref->refPicList[0].list[curr->ref_idx[0]];
 532             } else {
 533                 A     = curr->mv[1];
 534                 ref_A = s->ref->refPicList[1].list[curr->ref_idx[1]];
 535             }
 536
 537             if (neigh->pred_flag[0]) {
 538                 B     = neigh->mv[0];
 539                 ref_B = neigh_refPicList[0].list[neigh->ref_idx[0]];
 540             } else {
 541                 B     = neigh->mv[1];
 542                 ref_B = neigh_refPicList[1].list[neigh->ref_idx[1]];
 543             }
 544
 545             if (ref_A == ref_B) {
 546                 if (abs(A.x - B.x) >= 4 || abs(A.y - B.y) >= 4)
 547                     return 1;
 548                 else
 549                     return 0;
 550             } else
 551                 return 1;
 552         }
 553     }
 554
 555     return 1;
 556 }
 557
 558 void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0,
 559                                            int log2_trafo_size,
 560                                            int slice_or_tiles_up_boundary,
 561                                            int slice_or_tiles_left_boundary)
 562 {
 563     MvField *tab_mvf     = s->ref->tab_mvf;
 564     int log2_min_pu_size = s->sps->log2_min_pu_size;
 565     int log2_min_tu_size = s->sps->log2_min_tb_size;
 566     int min_pu_width     = s->sps->min_pu_width;
 567     int min_tu_width     = s->sps->min_tb_width;
 568     int is_intra = tab_mvf[(y0 >> log2_min_pu_size) * min_pu_width +
 569                            (x0 >> log2_min_pu_size)].is_intra;
 570     int i, j, bs;
 571
 572     if (y0 > 0 && (y0 & 7) == 0) {
 573         int yp_pu = (y0 - 1) >> log2_min_pu_size;
 574         int yq_pu =  y0      >> log2_min_pu_size;
 575         int yp_tu = (y0 - 1) >> log2_min_tu_size;
 576         int yq_tu =  y0      >> log2_min_tu_size;
 577
 578         for (i = 0; i < (1 << log2_trafo_size); i += 4) {
 579             int x_pu = (x0 + i) >> log2_min_pu_size;
 580             int x_tu = (x0 + i) >> log2_min_tu_size;
 581             MvField *top  = &tab_mvf[yp_pu * min_pu_width + x_pu];
 582             MvField *curr = &tab_mvf[yq_pu * min_pu_width + x_pu];
 583             uint8_t top_cbf_luma  = s->cbf_luma[yp_tu * min_tu_width + x_tu];
 584             uint8_t curr_cbf_luma = s->cbf_luma[yq_tu * min_tu_width + x_tu];
 585             RefPicList *top_refPicList = ff_hevc_get_ref_list(s, s->ref,
 586                                                               x0 + i, y0 - 1);
 587
 588             bs = boundary_strength(s, curr, curr_cbf_luma,
 589                                    top, top_cbf_luma, top_refPicList, 1);
 590             if (!s->sh.slice_loop_filter_across_slices_enabled_flag &&
 591                 (slice_or_tiles_up_boundary & 1) &&
 592                 (y0 % (1 << s->sps->log2_ctb_size)) == 0)
 593                 bs = 0;
 594             else if (!s->pps->loop_filter_across_tiles_enabled_flag &&
 595                      (slice_or_tiles_up_boundary & 2) &&
 596                      (y0 % (1 << s->sps->log2_ctb_size)) == 0)
 597                 bs = 0;
 598             if (y0 == 0 || s->sh.disable_deblocking_filter_flag == 1)
 599                 bs = 0;
 600             if (bs)
 601                 s->horizontal_bs[((x0 + i) + y0 * s->bs_width) >> 2] = bs;
 602         }
 603     }
 604
 605     // bs for TU internal horizontal PU boundaries
 606     if (log2_trafo_size > s->sps->log2_min_pu_size && !is_intra)
 607         for (j = 8; j < (1 << log2_trafo_size); j += 8) {
 608             int yp_pu = (y0 + j - 1) >> log2_min_pu_size;
 609             int yq_pu = (y0 + j)     >> log2_min_pu_size;
 610             int yp_tu = (y0 + j - 1) >> log2_min_tu_size;
 611             int yq_tu = (y0 + j)     >> log2_min_tu_size;
 612
 613             for (i = 0; i < (1 << log2_trafo_size); i += 4) {
 614                 int x_pu = (x0 + i) >> log2_min_pu_size;
 615                 int x_tu = (x0 + i) >> log2_min_tu_size;
 616                 MvField *top  = &tab_mvf[yp_pu * min_pu_width + x_pu];
 617                 MvField *curr = &tab_mvf[yq_pu * min_pu_width + x_pu];
 618                 uint8_t top_cbf_luma  = s->cbf_luma[yp_tu * min_tu_width + x_tu];
 619                 uint8_t curr_cbf_luma = s->cbf_luma[yq_tu * min_tu_width + x_tu];
 620                 RefPicList *top_refPicList = ff_hevc_get_ref_list(s, s->ref,
 621                                                                   x0 + i,
 622                                                                   y0 + j - 1);
 623
 624                 bs = boundary_strength(s, curr, curr_cbf_luma,
 625                                        top, top_cbf_luma, top_refPicList, 0);
 626                 if (s->sh.disable_deblocking_filter_flag == 1)
 627                     bs = 0;
 628                 if (bs)
 629                     s->horizontal_bs[((x0 + i) + (y0 + j) * s->bs_width) >> 2] = bs;
 630             }
 631         }
 632
 633     // bs for vertical TU boundaries
 634     if (x0 > 0 && (x0 & 7) == 0) {
 635         int xp_pu = (x0 - 1) >> log2_min_pu_size;
 636         int xq_pu =  x0      >> log2_min_pu_size;
 637         int xp_tu = (x0 - 1) >> log2_min_tu_size;
 638         int xq_tu =  x0      >> log2_min_tu_size;
 639
 640         for (i = 0; i < (1 << log2_trafo_size); i += 4) {
 641             int y_pu      = (y0 + i) >> log2_min_pu_size;
 642             int y_tu      = (y0 + i) >> log2_min_tu_size;
 643             MvField *left = &tab_mvf[y_pu * min_pu_width + xp_pu];
 644             MvField *curr = &tab_mvf[y_pu * min_pu_width + xq_pu];
 645
 646             uint8_t left_cbf_luma = s->cbf_luma[y_tu * min_tu_width + xp_tu];
 647             uint8_t curr_cbf_luma = s->cbf_luma[y_tu * min_tu_width + xq_tu];
 648             RefPicList *left_refPicList = ff_hevc_get_ref_list(s, s->ref,
 649                                                                x0 - 1, y0 + i);
 650
 651             bs = boundary_strength(s, curr, curr_cbf_luma,
 652                                    left, left_cbf_luma, left_refPicList, 1);
 653             if (!s->sh.slice_loop_filter_across_slices_enabled_flag &&
 654                 (slice_or_tiles_left_boundary & 1) &&
 655                 (x0 % (1 << s->sps->log2_ctb_size)) == 0)
 656                 bs = 0;
 657             else if (!s->pps->loop_filter_across_tiles_enabled_flag &&
 658                      (slice_or_tiles_left_boundary & 2) &&
 659                      (x0 % (1 << s->sps->log2_ctb_size)) == 0)
 660                 bs = 0;
 661             if (x0 == 0 || s->sh.disable_deblocking_filter_flag == 1)
 662                 bs = 0;
 663             if (bs)
 664                 s->vertical_bs[(x0 >> 3) + ((y0 + i) >> 2) * s->bs_width] = bs;
 665         }
 666     }
 667
 668     // bs for TU internal vertical PU boundaries
 669     if (log2_trafo_size > log2_min_pu_size && !is_intra)
 670         for (j = 0; j < (1 << log2_trafo_size); j += 4) {
 671             int y_pu = (y0 + j) >> log2_min_pu_size;
 672             int y_tu = (y0 + j) >> log2_min_tu_size;
 673
 674             for (i = 8; i < (1 << log2_trafo_size); i += 8) {
 675                 int xp_pu = (x0 + i - 1) >> log2_min_pu_size;
 676                 int xq_pu = (x0 + i)     >> log2_min_pu_size;
 677                 int xp_tu = (x0 + i - 1) >> log2_min_tu_size;
 678                 int xq_tu = (x0 + i)     >> log2_min_tu_size;
 679                 MvField *left = &tab_mvf[y_pu * min_pu_width + xp_pu];
 680                 MvField *curr = &tab_mvf[y_pu * min_pu_width + xq_pu];
 681                 uint8_t left_cbf_luma = s->cbf_luma[y_tu * min_tu_width + xp_tu];
 682                 uint8_t curr_cbf_luma = s->cbf_luma[y_tu * min_tu_width + xq_tu];
 683                 RefPicList *left_refPicList = ff_hevc_get_ref_list(s, s->ref,
 684                                                                    x0 + i - 1,
 685                                                                    y0 + j);
 686
 687                 bs = boundary_strength(s, curr, curr_cbf_luma,
 688                                        left, left_cbf_luma, left_refPicList, 0);
 689                 if (s->sh.disable_deblocking_filter_flag == 1)
 690                     bs = 0;
 691                 if (bs)
 692                     s->vertical_bs[((x0 + i) >> 3) + ((y0 + j) >> 2) * s->bs_width] = bs;
 693             }
 694         }
 695 }
 696
 697 #undef LUMA
 698 #undef CB
 699 #undef CR
 700
 701 void ff_hevc_hls_filter(HEVCContext *s, int x, int y)
 702 {
 703     deblocking_filter_CTB(s, x, y);
 704     if (s->sps->sao_enabled)
 705         sao_filter_CTB(s, x, y);
 706 }
 707
 708 void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size)
 709 {
 710     if (y_ctb && x_ctb)
 711         ff_hevc_hls_filter(s, x_ctb - ctb_size, y_ctb - ctb_size);
 712     if (y_ctb && x_ctb >= s->sps->width - ctb_size) {
 713         ff_hevc_hls_filter(s, x_ctb, y_ctb - ctb_size);
 714         if (s->threads_type == FF_THREAD_FRAME )
 715             ff_thread_report_progress(&s->ref->tf, y_ctb - ctb_size, 0);
 716     }
 717     if (x_ctb && y_ctb >= s->sps->height - ctb_size)
 718         ff_hevc_hls_filter(s, x_ctb - ctb_size, y_ctb);
 719 }