libavcodec/h264_mb_template.c

   1 /*
   2  * H.26L/H.264/AVC/JVT/14496-10/... decoder
   3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #undef FUNC
  23 #undef PIXEL_SHIFT
  24
  25 #if SIMPLE
  26 #   define FUNC(n) AV_JOIN(n ## _simple_, BITS)
  27 #   define PIXEL_SHIFT (BITS >> 4)
  28 #else
  29 #   define FUNC(n) n ## _complex
  30 #   define PIXEL_SHIFT h->pixel_shift
  31 #endif
  32
  33 #undef  CHROMA_IDC
  34 #define CHROMA_IDC 1
  35 #include "h264_mc_template.c"
  36
  37 #undef  CHROMA_IDC
  38 #define CHROMA_IDC 2
  39 #include "h264_mc_template.c"
  40
  41 static av_noinline void FUNC(hl_decode_mb)(const H264Context *h, H264SliceContext *sl)
  42 {
  43     const int mb_x    = sl->mb_x;
  44     const int mb_y    = sl->mb_y;
  45     const int mb_xy   = sl->mb_xy;
  46     const int mb_type = h->cur_pic.mb_type[mb_xy];
  47     uint8_t *dest_y, *dest_cb, *dest_cr;
  48     int linesize, uvlinesize /*dct_offset*/;
  49     int i, j;
  50     const int *block_offset = &h->block_offset[0];
  51     const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
  52     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
  53     const int block_h   = 16 >> h->chroma_y_shift;
  54     const int chroma422 = CHROMA422(h);
  55
  56     dest_y  = h->cur_pic.f->data[0] + ((mb_x << PIXEL_SHIFT)     + mb_y * sl->linesize)  * 16;
  57     dest_cb = h->cur_pic.f->data[1] +  (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
  58     dest_cr = h->cur_pic.f->data[2] +  (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
  59
  60     h->vdsp.prefetch(dest_y  + (sl->mb_x & 3) * 4 * sl->linesize   + (64 << PIXEL_SHIFT), sl->linesize,       4);
  61     h->vdsp.prefetch(dest_cb + (sl->mb_x & 7)     * sl->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
  62
  63     h->list_counts[mb_xy] = sl->list_count;
  64
  65     if (!SIMPLE && MB_FIELD(sl)) {
  66         linesize     = sl->mb_linesize = sl->linesize * 2;
  67         uvlinesize   = sl->mb_uvlinesize = sl->uvlinesize * 2;
  68         block_offset = &h->block_offset[48];
  69         if (mb_y & 1) { // FIXME move out of this function?
  70             dest_y  -= sl->linesize * 15;
  71             dest_cb -= sl->uvlinesize * (block_h - 1);
  72             dest_cr -= sl->uvlinesize * (block_h - 1);
  73         }
  74         if (FRAME_MBAFF(h)) {
  75             int list;
  76             for (list = 0; list < sl->list_count; list++) {
  77                 if (!USES_LIST(mb_type, list))
  78                     continue;
  79                 if (IS_16X16(mb_type)) {
  80                     int8_t *ref = &sl->ref_cache[list][scan8[0]];
  81                     fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
  82                 } else {
  83                     for (i = 0; i < 16; i += 4) {
  84                         int ref = sl->ref_cache[list][scan8[i]];
  85                         if (ref >= 0)
  86                             fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
  87                                            8, (16 + ref) ^ (sl->mb_y & 1), 1);
  88                     }
  89                 }
  90             }
  91         }
  92     } else {
  93         linesize   = sl->mb_linesize   = sl->linesize;
  94         uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
  95         // dct_offset = s->linesize * 16;
  96     }
  97
  98     if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
  99         const int bit_depth = h->ps.sps->bit_depth_luma;
 100         if (PIXEL_SHIFT) {
 101             int j;
 102             GetBitContext gb;
 103             init_get_bits(&gb, sl->intra_pcm_ptr,
 104                           ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] * bit_depth);
 105
 106             for (i = 0; i < 16; i++) {
 107                 uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
 108                 for (j = 0; j < 16; j++)
 109                     tmp_y[j] = get_bits(&gb, bit_depth);
 110             }
 111             if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 112                 if (!h->ps.sps->chroma_format_idc) {
 113                     for (i = 0; i < block_h; i++) {
 114                         uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
 115                         uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
 116                         for (j = 0; j < 8; j++) {
 117                             tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
 118                         }
 119                     }
 120                 } else {
 121                     for (i = 0; i < block_h; i++) {
 122                         uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
 123                         for (j = 0; j < 8; j++)
 124                             tmp_cb[j] = get_bits(&gb, bit_depth);
 125                     }
 126                     for (i = 0; i < block_h; i++) {
 127                         uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
 128                         for (j = 0; j < 8; j++)
 129                             tmp_cr[j] = get_bits(&gb, bit_depth);
 130                     }
 131                 }
 132             }
 133         } else {
 134             for (i = 0; i < 16; i++)
 135                 memcpy(dest_y + i * linesize, sl->intra_pcm_ptr + i * 16, 16);
 136             if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 137                 if (!h->ps.sps->chroma_format_idc) {
 138                     for (i = 0; i < 8; i++) {
 139                         memset(dest_cb + i * uvlinesize, 1 << (bit_depth - 1), 8);
 140                         memset(dest_cr + i * uvlinesize, 1 << (bit_depth - 1), 8);
 141                     }
 142                 } else {
 143                     const uint8_t *src_cb = sl->intra_pcm_ptr + 256;
 144                     const uint8_t *src_cr = sl->intra_pcm_ptr + 256 + block_h * 8;
 145                     for (i = 0; i < block_h; i++) {
 146                         memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
 147                         memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
 148                     }
 149                 }
 150             }
 151         }
 152     } else {
 153         if (IS_INTRA(mb_type)) {
 154             if (sl->deblocking_filter)
 155                 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
 156                                uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
 157
 158             if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 159                 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cb, uvlinesize);
 160                 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cr, uvlinesize);
 161             }
 162
 163             hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
 164                                       transform_bypass, PIXEL_SHIFT,
 165                                       block_offset, linesize, dest_y, 0);
 166
 167             if (sl->deblocking_filter)
 168                 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
 169                                uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
 170         } else {
 171             if (chroma422) {
 172                 FUNC(hl_motion_422)(h, sl, dest_y, dest_cb, dest_cr,
 173                               h->h264qpel.put_h264_qpel_pixels_tab,
 174                               h->h264chroma.put_h264_chroma_pixels_tab,
 175                               h->h264qpel.avg_h264_qpel_pixels_tab,
 176                               h->h264chroma.avg_h264_chroma_pixels_tab,
 177                               h->h264dsp.weight_h264_pixels_tab,
 178                               h->h264dsp.biweight_h264_pixels_tab);
 179             } else {
 180                 FUNC(hl_motion_420)(h, sl, dest_y, dest_cb, dest_cr,
 181                               h->h264qpel.put_h264_qpel_pixels_tab,
 182                               h->h264chroma.put_h264_chroma_pixels_tab,
 183                               h->h264qpel.avg_h264_qpel_pixels_tab,
 184                               h->h264chroma.avg_h264_chroma_pixels_tab,
 185                               h->h264dsp.weight_h264_pixels_tab,
 186                               h->h264dsp.biweight_h264_pixels_tab);
 187             }
 188         }
 189
 190         hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
 191                                PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
 192
 193         if ((SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) &&
 194             (sl->cbp & 0x30)) {
 195             uint8_t *dest[2] = { dest_cb, dest_cr };
 196             if (transform_bypass) {
 197                 if (IS_INTRA(mb_type) && h->ps.sps->profile_idc == 244 &&
 198                     (sl->chroma_pred_mode == VERT_PRED8x8 ||
 199                      sl->chroma_pred_mode == HOR_PRED8x8)) {
 200                     h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[0],
 201                                                             block_offset + 16,
 202                                                             sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
 203                                                             uvlinesize);
 204                     h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[1],
 205                                                             block_offset + 32,
 206                                                             sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
 207                                                             uvlinesize);
 208                 } else {
 209                     idct_add = h->h264dsp.h264_add_pixels4_clear;
 210                     for (j = 1; j < 3; j++) {
 211                         for (i = j * 16; i < j * 16 + 4; i++)
 212                             if (sl->non_zero_count_cache[scan8[i]] ||
 213                                 dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
 214                                 idct_add(dest[j - 1] + block_offset[i],
 215                                          sl->mb + (i * 16 << PIXEL_SHIFT),
 216                                          uvlinesize);
 217                         if (chroma422) {
 218                             for (i = j * 16 + 4; i < j * 16 + 8; i++)
 219                                 if (sl->non_zero_count_cache[scan8[i + 4]] ||
 220                                     dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
 221                                     idct_add(dest[j - 1] + block_offset[i + 4],
 222                                              sl->mb + (i * 16 << PIXEL_SHIFT),
 223                                              uvlinesize);
 224                         }
 225                     }
 226                 }
 227             } else {
 228                 int qp[2];
 229                 if (chroma422) {
 230                     qp[0] = sl->chroma_qp[0] + 3;
 231                     qp[1] = sl->chroma_qp[1] + 3;
 232                 } else {
 233                     qp[0] = sl->chroma_qp[0];
 234                     qp[1] = sl->chroma_qp[1];
 235                 }
 236                 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
 237                     h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
 238                                                            h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
 239                 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
 240                     h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
 241                                                            h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
 242                 h->h264dsp.h264_idct_add8(dest, block_offset,
 243                                           sl->mb, uvlinesize,
 244                                           sl->non_zero_count_cache);
 245             }
 246         }
 247     }
 248 }
 249
 250 #if !SIMPLE || BITS == 8
 251
 252 #undef  CHROMA_IDC
 253 #define CHROMA_IDC 3
 254 #include "h264_mc_template.c"
 255
 256 static av_noinline void FUNC(hl_decode_mb_444)(const H264Context *h, H264SliceContext *sl)
 257 {
 258     const int mb_x    = sl->mb_x;
 259     const int mb_y    = sl->mb_y;
 260     const int mb_xy   = sl->mb_xy;
 261     const int mb_type = h->cur_pic.mb_type[mb_xy];
 262     uint8_t *dest[3];
 263     int linesize;
 264     int i, j, p;
 265     const int *block_offset = &h->block_offset[0];
 266     const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
 267     const int plane_count      = (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) ? 3 : 1;
 268
 269     for (p = 0; p < plane_count; p++) {
 270         dest[p] = h->cur_pic.f->data[p] +
 271                   ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
 272         h->vdsp.prefetch(dest[p] + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT),
 273                          sl->linesize, 4);
 274     }
 275
 276     h->list_counts[mb_xy] = sl->list_count;
 277
 278     if (!SIMPLE && MB_FIELD(sl)) {
 279         linesize     = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize * 2;
 280         block_offset = &h->block_offset[48];
 281         if (mb_y & 1) // FIXME move out of this function?
 282             for (p = 0; p < 3; p++)
 283                 dest[p] -= sl->linesize * 15;
 284         if (FRAME_MBAFF(h)) {
 285             int list;
 286             for (list = 0; list < sl->list_count; list++) {
 287                 if (!USES_LIST(mb_type, list))
 288                     continue;
 289                 if (IS_16X16(mb_type)) {
 290                     int8_t *ref = &sl->ref_cache[list][scan8[0]];
 291                     fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
 292                 } else {
 293                     for (i = 0; i < 16; i += 4) {
 294                         int ref = sl->ref_cache[list][scan8[i]];
 295                         if (ref >= 0)
 296                             fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
 297                                            8, (16 + ref) ^ (sl->mb_y & 1), 1);
 298                     }
 299                 }
 300             }
 301         }
 302     } else {
 303         linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize;
 304     }
 305
 306     if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
 307         if (PIXEL_SHIFT) {
 308             const int bit_depth = h->ps.sps->bit_depth_luma;
 309             GetBitContext gb;
 310             init_get_bits(&gb, sl->intra_pcm_ptr, 768 * bit_depth);
 311
 312             for (p = 0; p < plane_count; p++)
 313                 for (i = 0; i < 16; i++) {
 314                     uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
 315                     for (j = 0; j < 16; j++)
 316                         tmp[j] = get_bits(&gb, bit_depth);
 317                 }
 318         } else {
 319             for (p = 0; p < plane_count; p++)
 320                 for (i = 0; i < 16; i++)
 321                     memcpy(dest[p] + i * linesize,
 322                            sl->intra_pcm_ptr + p * 256 + i * 16, 16);
 323         }
 324     } else {
 325         if (IS_INTRA(mb_type)) {
 326             if (sl->deblocking_filter)
 327                 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
 328                                linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
 329
 330             for (p = 0; p < plane_count; p++)
 331                 hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
 332                                           transform_bypass, PIXEL_SHIFT,
 333                                           block_offset, linesize, dest[p], p);
 334
 335             if (sl->deblocking_filter)
 336                 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
 337                                linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
 338         } else {
 339             FUNC(hl_motion_444)(h, sl, dest[0], dest[1], dest[2],
 340                       h->h264qpel.put_h264_qpel_pixels_tab,
 341                       h->h264chroma.put_h264_chroma_pixels_tab,
 342                       h->h264qpel.avg_h264_qpel_pixels_tab,
 343                       h->h264chroma.avg_h264_chroma_pixels_tab,
 344                       h->h264dsp.weight_h264_pixels_tab,
 345                       h->h264dsp.biweight_h264_pixels_tab);
 346         }
 347
 348         for (p = 0; p < plane_count; p++)
 349             hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
 350                                    PIXEL_SHIFT, block_offset, linesize,
 351                                    dest[p], p);
 352     }
 353 }
 354
 355 #endif