blob: 58c05044c135f4b4778418159e37e61480a96ecf
| 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 | #include "h264dec.h" |
| 23 | |
| 24 | #undef MCFUNC |
| 25 | |
| 26 | #if CHROMA_IDC == 1 |
| 27 | # define MCFUNC(n) FUNC(n ## _420) |
| 28 | #elif CHROMA_IDC == 2 |
| 29 | # define MCFUNC(n) FUNC(n ## _422) |
| 30 | #elif CHROMA_IDC == 3 |
| 31 | # define MCFUNC(n) FUNC(n ## _444) |
| 32 | #endif |
| 33 | |
| 34 | #undef mc_part |
| 35 | #define mc_part MCFUNC(mc_part) |
| 36 | |
| 37 | static void mc_part(const H264Context *h, H264SliceContext *sl, |
| 38 | int n, int square, |
| 39 | int height, int delta, |
| 40 | uint8_t *dest_y, uint8_t *dest_cb, |
| 41 | uint8_t *dest_cr, |
| 42 | int x_offset, int y_offset, |
| 43 | const qpel_mc_func *qpix_put, |
| 44 | h264_chroma_mc_func chroma_put, |
| 45 | const qpel_mc_func *qpix_avg, |
| 46 | h264_chroma_mc_func chroma_avg, |
| 47 | const h264_weight_func *weight_op, |
| 48 | const h264_biweight_func *weight_avg, |
| 49 | int list0, int list1) |
| 50 | { |
| 51 | if ((sl->pwt.use_weight == 2 && list0 && list1 && |
| 52 | (sl->pwt.implicit_weight[sl->ref_cache[0][scan8[n]]][sl->ref_cache[1][scan8[n]]][sl->mb_y & 1] != 32)) || |
| 53 | sl->pwt.use_weight == 1) |
| 54 | mc_part_weighted(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr, |
| 55 | x_offset, y_offset, qpix_put, chroma_put, |
| 56 | weight_op[0], weight_op[1], weight_avg[0], |
| 57 | weight_avg[1], list0, list1, PIXEL_SHIFT, CHROMA_IDC); |
| 58 | else |
| 59 | mc_part_std(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr, |
| 60 | x_offset, y_offset, qpix_put, chroma_put, qpix_avg, |
| 61 | chroma_avg, list0, list1, PIXEL_SHIFT, CHROMA_IDC); |
| 62 | } |
| 63 | |
| 64 | static void MCFUNC(hl_motion)(const H264Context *h, H264SliceContext *sl, |
| 65 | uint8_t *dest_y, |
| 66 | uint8_t *dest_cb, uint8_t *dest_cr, |
| 67 | const qpel_mc_func(*qpix_put)[16], |
| 68 | const h264_chroma_mc_func(*chroma_put), |
| 69 | const qpel_mc_func(*qpix_avg)[16], |
| 70 | const h264_chroma_mc_func(*chroma_avg), |
| 71 | const h264_weight_func *weight_op, |
| 72 | const h264_biweight_func *weight_avg) |
| 73 | { |
| 74 | const int mb_xy = sl->mb_xy; |
| 75 | const int mb_type = h->cur_pic.mb_type[mb_xy]; |
| 76 | |
| 77 | av_assert2(IS_INTER(mb_type)); |
| 78 | |
| 79 | if (HAVE_THREADS && (h->avctx->active_thread_type & FF_THREAD_FRAME)) |
| 80 | await_references(h, sl); |
| 81 | prefetch_motion(h, sl, 0, PIXEL_SHIFT, CHROMA_IDC); |
| 82 | |
| 83 | if (IS_16X16(mb_type)) { |
| 84 | mc_part(h, sl, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0, |
| 85 | qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0], |
| 86 | weight_op, weight_avg, |
| 87 | IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); |
| 88 | } else if (IS_16X8(mb_type)) { |
| 89 | mc_part(h, sl, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0, |
| 90 | qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], |
| 91 | weight_op, weight_avg, |
| 92 | IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); |
| 93 | mc_part(h, sl, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4, |
| 94 | qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], |
| 95 | weight_op, weight_avg, |
| 96 | IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); |
| 97 | } else if (IS_8X16(mb_type)) { |
| 98 | mc_part(h, sl, 0, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0, |
| 99 | qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], |
| 100 | &weight_op[1], &weight_avg[1], |
| 101 | IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); |
| 102 | mc_part(h, sl, 4, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0, |
| 103 | qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], |
| 104 | &weight_op[1], &weight_avg[1], |
| 105 | IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); |
| 106 | } else { |
| 107 | int i; |
| 108 | |
| 109 | av_assert2(IS_8X8(mb_type)); |
| 110 | |
| 111 | for (i = 0; i < 4; i++) { |
| 112 | const int sub_mb_type = sl->sub_mb_type[i]; |
| 113 | const int n = 4 * i; |
| 114 | int x_offset = (i & 1) << 2; |
| 115 | int y_offset = (i & 2) << 1; |
| 116 | |
| 117 | if (IS_SUB_8X8(sub_mb_type)) { |
| 118 | mc_part(h, sl, n, 1, 8, 0, dest_y, dest_cb, dest_cr, |
| 119 | x_offset, y_offset, |
| 120 | qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], |
| 121 | &weight_op[1], &weight_avg[1], |
| 122 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 123 | } else if (IS_SUB_8X4(sub_mb_type)) { |
| 124 | mc_part(h, sl, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, |
| 125 | x_offset, y_offset, |
| 126 | qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], |
| 127 | &weight_op[1], &weight_avg[1], |
| 128 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 129 | mc_part(h, sl, n + 2, 0, 4, 4 << PIXEL_SHIFT, |
| 130 | dest_y, dest_cb, dest_cr, x_offset, y_offset + 2, |
| 131 | qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], |
| 132 | &weight_op[1], &weight_avg[1], |
| 133 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 134 | } else if (IS_SUB_4X8(sub_mb_type)) { |
| 135 | mc_part(h, sl, n, 0, 8, 4 * sl->mb_linesize, |
| 136 | dest_y, dest_cb, dest_cr, x_offset, y_offset, |
| 137 | qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], |
| 138 | &weight_op[2], &weight_avg[2], |
| 139 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 140 | mc_part(h, sl, n + 1, 0, 8, 4 * sl->mb_linesize, |
| 141 | dest_y, dest_cb, dest_cr, x_offset + 2, y_offset, |
| 142 | qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], |
| 143 | &weight_op[2], &weight_avg[2], |
| 144 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 145 | } else { |
| 146 | int j; |
| 147 | av_assert2(IS_SUB_4X4(sub_mb_type)); |
| 148 | for (j = 0; j < 4; j++) { |
| 149 | int sub_x_offset = x_offset + 2 * (j & 1); |
| 150 | int sub_y_offset = y_offset + (j & 2); |
| 151 | mc_part(h, sl, n + j, 1, 4, 0, |
| 152 | dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset, |
| 153 | qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], |
| 154 | &weight_op[2], &weight_avg[2], |
| 155 | IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | if (USES_LIST(mb_type, 1)) |
| 162 | prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC); |
| 163 | } |
| 164 | |
| 165 |